fix: replace nested button with div in session history list

HTML spec forbids <button> inside <button>. Change the outer session
list item from <button> to <div role="button"> to fix the hydration
warning while preserving click and keyboard accessibility.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/build.yml

@@ -84,14 +84,17 @@ jobs:
             release/*.blockmap
           if-no-files-found: ignore
 
-  # Linux x64 — builds directly on ubuntu-latest (no container).
-  # v1.0.39 used a debian:bullseye container which broke native module
-  # packaging (node-pty .node file missing from asar.unpacked). Reverted
-  # to the v1.0.38 approach. See #264.
+  # Linux x64 — pin to ubuntu-22.04 for broader glibc compatibility.
+  # ubuntu-latest (24.04) links native modules against glibc 2.39 which
+  # can cause dlopen failures on some distros. 22.04 uses glibc 2.35,
+  # compatible with most current Linux distributions including Arch.
+  # See #264.
   build-linux-x64:
     name: build-linux-x64
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     env:
+      npm_config_arch: x64
+      npm_config_target_arch: x64
       VITE_SYNC_GITHUB_CLIENT_ID: ${{ secrets.VITE_SYNC_GITHUB_CLIENT_ID }}
       VITE_SYNC_GOOGLE_CLIENT_ID: ${{ secrets.VITE_SYNC_GOOGLE_CLIENT_ID }}
       VITE_SYNC_GOOGLE_CLIENT_SECRET: ${{ secrets.VITE_SYNC_GOOGLE_CLIENT_SECRET }}
@@ -120,11 +123,23 @@ jobs:
           echo "Setting version to ${VERSION}"
           npm pkg set version="${VERSION}"
 
+      - name: Prepare node-pty Linux runtime
+        env:
+          npm_config_arch: x64
+        run: bash scripts/ensure-node-pty-linux.sh prepare x64
+
       - name: Build package
         env:
+          npm_config_arch: x64
           ELECTRON_BUILDER_PUBLISH: "never"
         run: npm run pack:linux-x64
 
+      - name: Verify packaged node-pty Linux runtime
+        run: bash scripts/ensure-node-pty-linux.sh verify x64
+
+      - name: Verify packaged deb artifact
+        run: bash scripts/verify-linux-deb-artifact.sh amd64
+
       - name: Upload artifacts
         uses: actions/upload-artifact@v4
         with:
@@ -146,6 +161,8 @@ jobs:
     container:
       image: debian:bullseye
     env:
+      npm_config_arch: arm64
+      npm_config_target_arch: arm64
       VITE_SYNC_GITHUB_CLIENT_ID: ${{ secrets.VITE_SYNC_GITHUB_CLIENT_ID }}
       VITE_SYNC_GOOGLE_CLIENT_ID: ${{ secrets.VITE_SYNC_GOOGLE_CLIENT_ID }}
       VITE_SYNC_GOOGLE_CLIENT_SECRET: ${{ secrets.VITE_SYNC_GOOGLE_CLIENT_SECRET }}
@@ -154,7 +171,9 @@ jobs:
       - name: Install build dependencies
         run: |
           apt-get update
-          apt-get install -y curl build-essential python3 git libfuse2 file rpm
+          apt-get install -y curl build-essential python3 git libfuse2 file rpm \
+            libglib2.0-0 libgtk-3-0 libnss3 libxss1 libxtst6 libasound2 \
+            libatk-bridge2.0-0 libdrm2 libgbm1 libx11-xcb1 libxcb-dri3-0
           curl -fsSL https://deb.nodesource.com/setup_22.x | bash -
           apt-get install -y nodejs
 
@@ -175,12 +194,23 @@ jobs:
           echo "Setting version to ${VERSION}"
           npm pkg set version="${VERSION}"
 
+      - name: Prepare node-pty Linux runtime
+        env:
+          npm_config_arch: arm64
+        run: bash scripts/ensure-node-pty-linux.sh prepare arm64
+
       - name: Build package
         env:
           npm_config_arch: arm64
           ELECTRON_BUILDER_PUBLISH: "never"
         run: npm run pack:linux-arm64
 
+      - name: Verify packaged node-pty Linux runtime
+        run: bash scripts/ensure-node-pty-linux.sh verify arm64
+
+      - name: Verify packaged deb artifact
+        run: bash scripts/verify-linux-deb-artifact.sh arm64
+
       - name: Upload artifacts
         uses: actions/upload-artifact@v4
         with:
@@ -200,6 +230,7 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/') || (github.event_name == 'workflow_dispatch' && inputs.publish_release)
     permissions:
       contents: write
+      actions: read
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -213,6 +244,54 @@ jobs:
       - name: List artifacts
         run: ls -la artifacts/
 
+      - name: Verify update metadata files
+        run: |
+          missing=0
+          for f in latest-mac.yml latest.yml latest-linux.yml latest-linux-arm64.yml; do
+            if [ ! -f "artifacts/$f" ]; then
+              echo "::warning::Missing $f in merged artifacts, attempting recovery..."
+              missing=1
+            fi
+          done
+          if [ "$missing" = "1" ]; then
+            echo "Re-downloading individual artifacts to recover missing files..."
+            for name in netcatty-macos netcatty-windows netcatty-linux-x64 netcatty-linux-arm64; do
+              tmpdir="/tmp/artifact-${name}"
+              gh run download ${{ github.run_id }} --name "${name}" --dir "${tmpdir}" 2>/dev/null || true
+              if [ -d "${tmpdir}" ]; then
+                for yml in "${tmpdir}"/latest*.yml; do
+                  [ -f "$yml" ] && cp -v "$yml" artifacts/
+                done
+              fi
+            done
+            echo "After recovery:"
+            ls -la artifacts/*.yml
+          fi
+          # Final check — fail if any update yml is still missing
+          for f in latest-mac.yml latest.yml latest-linux.yml latest-linux-arm64.yml; do
+            if [ ! -f "artifacts/$f" ]; then
+              echo "::error::$f is still missing after recovery attempt"
+              exit 1
+            fi
+          done
+          echo "All update metadata files present."
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Verify downloaded Linux amd64 deb artifact
+        run: |
+          deb_file="$(find artifacts -maxdepth 1 -type f -name '*-linux-amd64.deb' -print | sort | head -n 1)"
+          test -n "${deb_file}"
+          bash scripts/verify-linux-deb-artifact.sh amd64 "${deb_file}"
+
+      - name: Verify downloaded Linux arm64 deb artifact metadata
+        env:
+          VERIFY_LOAD: "0"
+        run: |
+          deb_file="$(find artifacts -maxdepth 1 -type f -name '*-linux-arm64.deb' -print | sort | head -n 1)"
+          test -n "${deb_file}"
+          bash scripts/verify-linux-deb-artifact.sh arm64 "${deb_file}"
+
       - name: Generate Release Body
         run: node .github/scripts/generate-release-note.js
         env:

.gitignore

@@ -35,8 +35,11 @@ coverage
 *.sln
 *.sw?
 
-# Claude Code local settings
-/.claude/settings.local.json
+# Claude Code
+/.claude/
+
+# Codex
+/.codex/
 /CLAUDE.md
 
 # AI / Superpowers generated docs (local only)

App.tsx

@@ -1,6 +1,7 @@
-import React, { Suspense, lazy, useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import React, { Suspense, lazy, useCallback, useEffect, useEffectEvent, useMemo, useRef, useState } from 'react';
 import { activeTabStore, useActiveTabId, useIsSftpActive, useIsTerminalLayerVisible, useIsVaultActive } from './application/state/activeTabStore';
 import { useAutoSync } from './application/state/useAutoSync';
+import { useImmersiveMode } from './application/state/useImmersiveMode';
 import { useManagedSourceSync } from './application/state/useManagedSourceSync';
 import { usePortForwardingAutoStart } from './application/state/usePortForwardingAutoStart';
 import { usePortForwardingState } from './application/state/usePortForwardingState';
@@ -14,9 +15,15 @@ import { initializeUIFonts } from './application/state/uiFontStore';
 import { I18nProvider, useI18n } from './application/i18n/I18nProvider';
 import { matchesKeyBinding } from './domain/models';
 import { resolveHostAuth } from './domain/sshAuth';
-import { applySyncPayload } from './domain/syncPayload';
+import { resolveHostTerminalThemeId } from './domain/terminalAppearance';
+import { collectSessionIds } from './domain/workspace';
+import { TERMINAL_THEMES } from './infrastructure/config/terminalThemes';
+import { useCustomThemes } from './application/state/customThemeStore';
+import { applySyncPayload } from './application/syncPayload';
 import { getCredentialProtectionAvailability } from './infrastructure/services/credentialProtection';
 import { netcattyBridge } from './infrastructure/services/netcattyBridge';
+import { localStorageAdapter } from './infrastructure/persistence/localStorageAdapter';
+import { STORAGE_KEY_DEBUG_HOTKEYS } from './infrastructure/config/storageKeys';
 import { TopTabs } from './components/TopTabs';
 import { Button } from './components/ui/button';
 import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle } from './components/ui/dialog';
@@ -27,7 +34,8 @@ import { VaultView, VaultSection } from './components/VaultView';
 import { KeyboardInteractiveModal, KeyboardInteractiveRequest } from './components/KeyboardInteractiveModal';
 import { PassphraseModal, PassphraseRequest } from './components/PassphraseModal';
 import { cn } from './lib/utils';
-import { ConnectionLog, Host, HostProtocol, SerialConfig, TerminalTheme } from './types';
+import { classifyLocalShellType } from './lib/localShell';
+import { ConnectionLog, Host, HostProtocol, SerialConfig, TerminalSession, TerminalTheme } from './types';
 import { LogView as LogViewType } from './application/state/useSessionState';
 import type { SftpView as SftpViewComponent } from './components/SftpView';
 import type { TerminalLayer as TerminalLayerComponent } from './components/TerminalLayer';
@@ -96,8 +104,7 @@ const LazyCreateWorkspaceDialog = lazy(() =>
 const IS_DEV = import.meta.env.DEV;
 const HOTKEY_DEBUG =
   IS_DEV &&
-  typeof window !== "undefined" &&
-  window.localStorage?.getItem("debug.hotkeys") === "1";
+  localStorageAdapter.readString(STORAGE_KEY_DEBUG_HOTKEYS) === "1";
 
 const LazySftpView = lazy(() =>
   import('./components/SftpView').then((m) => ({ default: m.SftpView })),
@@ -170,6 +177,7 @@ function App({ settings }: { settings: SettingsState }) {
   const {
     setTheme,
     resolvedTheme,
+    terminalThemeId,
     setTerminalThemeId,
     currentTerminalTheme,
     terminalFontFamilyId,
@@ -184,11 +192,14 @@ function App({ settings }: { settings: SettingsState }) {
     sftpAutoSync,
     sftpShowHiddenFiles,
     sftpUseCompressedUpload,
+    sftpAutoOpenSidebar,
     editorWordWrap,
     setEditorWordWrap,
     sessionLogsEnabled,
     sessionLogsDir,
     sessionLogsFormat,
+    reapplyCurrentTheme,
+    immersiveMode,
   } = settings;
 
   const {
@@ -268,6 +279,74 @@ function App({ settings }: { settings: SettingsState }) {
   // isMacClient is used for window controls styling
   const isMacClient = typeof navigator !== 'undefined' && /Mac|Macintosh/.test(navigator.userAgent);
 
+  // ---------------------------------------------------------------------------
+  // Immersive Mode — derive UI chrome colors from the active terminal's theme
+  // ---------------------------------------------------------------------------
+  const activeTabId = useActiveTabId();
+  const customThemes = useCustomThemes();
+
+  // Resolve the effective TerminalTheme for the currently focused terminal tab
+  const hostById = useMemo(
+    () => new Map(hosts.map((host) => [host.id, host])),
+    [hosts],
+  );
+  const sessionById = useMemo(
+    () => new Map(sessions.map((session) => [session.id, session])),
+    [sessions],
+  );
+  const workspaceById = useMemo(
+    () => new Map(workspaces.map((workspace) => [workspace.id, workspace])),
+    [workspaces],
+  );
+  const themeById = useMemo(
+    () => new Map([...customThemes, ...TERMINAL_THEMES].map((theme) => [theme.id, theme])),
+    [customThemes],
+  );
+  const activeTerminalTheme = useMemo<TerminalTheme | null>(() => {
+    if (activeTabId === 'vault' || activeTabId === 'sftp') return null;
+
+    const resolveTheme = (s: TerminalSession): TerminalTheme => {
+      const host = hostById.get(s.hostId) ?? null;
+      const themeId = resolveHostTerminalThemeId(host, currentTerminalTheme.id);
+      return themeById.get(themeId) || currentTerminalTheme;
+    };
+
+    // Workspace
+    const workspace = workspaceById.get(activeTabId);
+    if (workspace) {
+      // Focus mode: use the focused (or first remaining) session's theme
+      if (workspace.viewMode === 'focus') {
+        const wsSessionIds = collectSessionIds(workspace.root);
+        const focused = (workspace.focusedSessionId
+          ? sessionById.get(workspace.focusedSessionId)
+          : null)
+          ?? wsSessionIds.map((id) => sessionById.get(id)).find(Boolean);
+        return focused ? resolveTheme(focused) : null;
+      }
+      // Split mode: require all sessions to share the same theme
+      const sessionIds = collectSessionIds(workspace.root);
+      const wsSessions = sessionIds
+        .map((id) => sessionById.get(id))
+        .filter(Boolean) as TerminalSession[];
+      if (wsSessions.length === 0) return null;
+      const firstTheme = resolveTheme(wsSessions[0]);
+      const allSame = wsSessions.every(s => resolveTheme(s).id === firstTheme.id);
+      return allSame ? firstTheme : null;
+    }
+
+    // Single session tab
+    const session = sessionById.get(activeTabId);
+    if (!session) return null;
+    return resolveTheme(session);
+  }, [activeTabId, currentTerminalTheme, hostById, sessionById, themeById, workspaceById]);
+
+  useImmersiveMode({
+    isImmersive: immersiveMode,
+    activeTabId,
+    activeTerminalTheme,
+    restoreOriginalTheme: reapplyCurrentTheme,
+  });
+
   // Get port forwarding rules and import function
   const { rules: portForwardingRules, importRules: importPortForwardingRules, startTunnel, stopTunnel } = usePortForwardingState();
 
@@ -292,10 +371,12 @@ function App({ settings }: { settings: SettingsState }) {
     snippetPackages,
     portForwardingRules: portForwardingRulesForSync,
     knownHosts,
+    settingsVersion: settings.settingsVersion,
     onApplyPayload: (payload) => {
       applySyncPayload(payload, {
         importVaultData: importDataFromString,
         importPortForwardingRules,
+        onSettingsApplied: settings.rehydrateAllFromStorage,
       });
     },
   });
@@ -311,15 +392,155 @@ function App({ settings }: { settings: SettingsState }) {
   }, [handleSyncNow]);
 
   // Update check hook - checks for new versions on startup
-  const { updateState, dismissUpdate, openReleasePage, installUpdate } = useUpdateCheck();
+  const { updateState, dismissUpdate, installUpdate } = useUpdateCheck();
 
   // Window controls - must be before update toast effect which uses openSettingsWindow
   const { openSettingsWindow } = useWindowControls();
+  const _handleTrayJumpToSession = useEffectEvent((sessionId: string) => {
+    const session = sessions.find((item) => item.id === sessionId);
+    if (session?.workspaceId) {
+      setActiveTabId(session.workspaceId);
+      setWorkspaceFocusedSession(session.workspaceId, sessionId);
+      return;
+    }
+    setActiveTabId(sessionId);
+  });
+  const _handleTrayTogglePortForward = useEffectEvent((ruleId: string, start: boolean) => {
+    const rule = portForwardingRules.find((item) => item.id === ruleId);
+    if (!rule) return;
+    const host = rule.hostId ? hosts.find((item) => item.id === rule.hostId) : undefined;
+    if (!host) {
+      toast.error(t("pf.error.hostNotFound"));
+      return;
+    }
+
+    if (start) {
+      void startTunnel(rule, host, hosts, keys, identities, (status, error) => {
+        if (status === "error" && error) toast.error(error);
+      }, rule.autoStart);
+      return;
+    }
+
+    void stopTunnel(ruleId);
+  });
+  const _handleTrayPanelConnect = useEffectEvent((hostId: string) => {
+    const host = hosts.find((item) => item.id === hostId);
+    if (!host) {
+      toast.error(t("pf.error.hostNotFound"));
+      return;
+    }
+
+    const { username, hostname: localHost } = systemInfoRef.current;
+    if (host.protocol === 'serial') {
+      const portName = host.hostname.split('/').pop() || host.hostname;
+      const sessionId = connectToHost(host);
+      addConnectionLog({
+        sessionId,
+        hostId: host.id,
+        hostLabel: host.label || `Serial: ${portName}`,
+        hostname: host.hostname,
+        username,
+        protocol: 'serial',
+        startTime: Date.now(),
+        localUsername: username,
+        localHostname: localHost,
+        saved: false,
+      });
+      return;
+    }
+
+    const protocol = host.moshEnabled ? 'mosh' : (host.protocol || 'ssh');
+    const resolvedAuth = resolveHostAuth({ host, keys, identities });
+    const sessionId = connectToHost(host);
+    addConnectionLog({
+      sessionId,
+      hostId: host.id,
+      hostLabel: host.label,
+      hostname: host.hostname,
+      username: resolvedAuth.username || 'root',
+      protocol: protocol as 'ssh' | 'telnet' | 'local' | 'mosh',
+      startTime: Date.now(),
+      localUsername: username,
+      localHostname: localHost,
+      saved: false,
+    });
+  });
+  const _handleGlobalHotkeyKeyDown = useEffectEvent((e: KeyboardEvent) => {
+    const isMac = hotkeyScheme === 'mac';
+    const target = e.target as HTMLElement;
+    const isFormElement = target.tagName === 'INPUT' || target.tagName === 'TEXTAREA' || target.isContentEditable;
+    const isMonacoElement =
+      target instanceof HTMLElement &&
+      !!target.closest?.('.monaco-editor, .monaco-diff-editor, .monaco-inputbox');
+    const isXtermInput =
+      target instanceof HTMLElement &&
+      !!target.closest?.(".xterm, .xterm-helper-textarea, .xterm-screen, .xterm-viewport");
+
+    if ((isFormElement || isMonacoElement) && !isXtermInput && e.key !== 'Escape') {
+      return;
+    }
+
+    const isTerminalElement =
+      target instanceof HTMLElement &&
+      !!target.closest?.(".xterm, .xterm-helper-textarea, .xterm-screen, .xterm-viewport");
+    const isTerminalInPath = Boolean(
+      e.composedPath?.().some(
+        (node) =>
+          node instanceof HTMLElement &&
+          (node.classList.contains("xterm") ||
+            node.classList.contains("xterm-helper-textarea") ||
+            node.classList.contains("xterm-screen") ||
+            node.classList.contains("xterm-viewport") ||
+            node.hasAttribute("data-session-id")),
+      ),
+    );
+
+    for (const binding of keyBindings) {
+      const keyStr = isMac ? binding.mac : binding.pc;
+      if (!matchesKeyBinding(e, keyStr, isMac)) continue;
+      if (HOTKEY_DEBUG) console.log('[Hotkeys] Matched binding:', binding.action, keyStr);
+      if (binding.category === 'sftp') {
+        continue;
+      }
+      const terminalActions = ['copy', 'paste', 'selectAll', 'clearBuffer', 'searchTerminal'];
+      if (terminalActions.includes(binding.action)) {
+        if (isTerminalElement) {
+          return;
+        }
+        continue;
+      }
+
+      e.preventDefault();
+      e.stopPropagation();
+      if (HOTKEY_DEBUG) {
+        console.log('[Hotkeys] Global handle', {
+          action: binding.action,
+          key: e.key,
+          meta: e.metaKey,
+          ctrl: e.ctrlKey,
+          alt: e.altKey,
+          shift: e.shiftKey,
+          targetTag: target?.tagName,
+          isTerminalElement,
+          isTerminalInPath,
+        });
+      }
+      executeHotkeyAction(binding.action, e);
+      return;
+    }
+  });
+  const _handleEscapeKeyDown = useEffectEvent((e: KeyboardEvent) => {
+    if (e.key === 'Escape' && isQuickSwitcherOpen) {
+      setIsQuickSwitcherOpen(false);
+    }
+  });
 
   // Show toast notification when update is available (only when auto-download is idle)
   useEffect(() => {
     // Skip "update available" toast if auto-download has already started or completed
     if (updateState.autoDownloadStatus !== 'idle') return;
+    // Don't show automatic notification when auto-update is disabled
+    if (localStorageAdapter.readString('netcatty_auto_update_enabled_v1') === 'false') return;
     if (updateState.hasUpdate && updateState.latestRelease) {
       const version = updateState.latestRelease.version;
       toast.info(
@@ -344,7 +565,7 @@ function App({ settings }: { settings: SettingsState }) {
   }, [updateState.hasUpdate, updateState.latestRelease, updateState.autoDownloadStatus, t, openSettingsWindow, dismissUpdate]);
 
   // Track previous autoDownloadStatus so toast effects fire only on actual transitions,
-  // not when unrelated deps (openReleasePage, installUpdate) change their reference.
+  // not when unrelated deps (installUpdate, openSettingsWindow) change their reference.
   const prevAutoDownloadStatusRef = useRef(updateState.autoDownloadStatus);
   useEffect(() => {
     const prev = prevAutoDownloadStatusRef.current;
@@ -367,23 +588,18 @@ function App({ settings }: { settings: SettingsState }) {
         t('update.downloadFailed.message'),
         {
           title: t('update.downloadFailed.title'),
-          actionLabel: t('update.openReleases'),
-          onClick: () => openReleasePage(),
+          actionLabel: t('update.viewInSettings'),
+          onClick: () => void openSettingsWindow(),
         }
       );
     }
-  }, [updateState.autoDownloadStatus, updateState.latestRelease?.version, t, installUpdate, openReleasePage]);
-
-  // Memoize keys for port forwarding to prevent unnecessary re-renders
-  const portForwardingKeys = useMemo(
-    () => keys.map((k) => ({ id: k.id, privateKey: k.privateKey, passphrase: k.passphrase, })),
-    [keys]
-  );
+  }, [updateState.autoDownloadStatus, updateState.latestRelease?.version, t, installUpdate, openSettingsWindow]);
 
   // Auto-start port forwarding rules on app launch
   usePortForwardingAutoStart({
     hosts,
-    keys: portForwardingKeys,
+    keys,
+    identities,
   });
 
   // Sync tray menu data + handle tray actions
@@ -424,111 +640,34 @@ function App({ settings }: { settings: SettingsState }) {
     if (!bridge?.onTrayFocusSession || !bridge?.onTrayTogglePortForward) return;
 
     const unsubscribeFocus = bridge.onTrayFocusSession((sessionId) => {
-      // Find the session to check if it belongs to a workspace
-      const session = sessions.find((s) => s.id === sessionId);
-      if (session?.workspaceId) {
-        // Session is in a workspace - navigate to workspace and focus the session
-        setActiveTabId(session.workspaceId);
-        setWorkspaceFocusedSession(session.workspaceId, sessionId);
-      } else {
-        // Standalone session or session not found - just set tab
-        setActiveTabId(sessionId);
-      }
+      _handleTrayJumpToSession(sessionId);
     });
-
     const unsubscribeToggle = bridge.onTrayTogglePortForward((ruleId, start) => {
-      const rule = portForwardingRules.find((r) => r.id === ruleId);
-      if (!rule) return;
-      const host = rule.hostId ? hosts.find((h) => h.id === rule.hostId) : undefined;
-      if (!host) {
-        toast.error(t("pf.error.hostNotFound"));
-        return;
-      }
-
-      const keysForPf = keys.map((k) => ({ id: k.id, privateKey: k.privateKey, passphrase: k.passphrase }));
-      if (start) {
-        void startTunnel(rule, host, keysForPf, (status, error) => {
-          if (status === "error" && error) toast.error(error);
-        }, rule.autoStart);
-      } else {
-        void stopTunnel(ruleId);
-      }
+      _handleTrayTogglePortForward(ruleId, start);
     });
 
     return () => {
       unsubscribeFocus?.();
       unsubscribeToggle?.();
     };
-  }, [hosts, keys, portForwardingRules, sessions, setActiveTabId, setWorkspaceFocusedSession, startTunnel, stopTunnel, t]);
+  }, []);
 
   // Tray panel actions (from main process)
   useEffect(() => {
-    const handlerJump = (sessionId: string) => {
-      // Find the session to check if it belongs to a workspace
-      const session = sessions.find((s) => s.id === sessionId);
-      if (session?.workspaceId) {
-        // Session is in a workspace - navigate to workspace and focus the session
-        setActiveTabId(session.workspaceId);
-        setWorkspaceFocusedSession(session.workspaceId, sessionId);
-      } else {
-        // Standalone session or session not found - just set tab
-        setActiveTabId(sessionId);
-      }
-    };
-
-    const handlerConnect = (hostId: string) => {
-      const host = hosts.find((h) => h.id === hostId);
-      if (!host) {
-        toast.error(t("pf.error.hostNotFound"));
-        return;
-      }
-
-      const { username, hostname: localHost } = systemInfoRef.current;
-      if (host.protocol === 'serial') {
-        const portName = host.hostname.split('/').pop() || host.hostname;
-        const sessionId = connectToHost(host);
-        addConnectionLog({
-          sessionId,
-          hostId: host.id,
-          hostLabel: host.label || `Serial: ${portName}`,
-          hostname: host.hostname,
-          username,
-          protocol: 'serial',
-          startTime: Date.now(),
-          localUsername: username,
-          localHostname: localHost,
-          saved: false,
-        });
-        return;
-      }
-
-      const protocol = host.moshEnabled ? 'mosh' : (host.protocol || 'ssh');
-      const resolvedAuth = resolveHostAuth({ host, keys, identities });
-      const sessionId = connectToHost(host);
-      addConnectionLog({
-        sessionId,
-        hostId: host.id,
-        hostLabel: host.label,
-        hostname: host.hostname,
-        username: resolvedAuth.username || 'root',
-        protocol: protocol as 'ssh' | 'telnet' | 'local' | 'mosh',
-        startTime: Date.now(),
-        localUsername: username,
-        localHostname: localHost,
-        saved: false,
-      });
-    };
-
     const bridge = netcattyBridge.get();
     if (!bridge?.onTrayPanelJumpToSession || !bridge?.onTrayPanelConnectToHost) return;
 
-    const unsubscribeJump = bridge.onTrayPanelJumpToSession(handlerJump);
-    const unsubscribeConnect = bridge.onTrayPanelConnectToHost(handlerConnect);
+    const unsubscribeJump = bridge.onTrayPanelJumpToSession((sessionId) => {
+      _handleTrayJumpToSession(sessionId);
+    });
+    const unsubscribeConnect = bridge.onTrayPanelConnectToHost((hostId) => {
+      _handleTrayPanelConnect(hostId);
+    });
     return () => {
       unsubscribeJump?.();
       unsubscribeConnect?.();
     };
-  }, [addConnectionLog, connectToHost, hosts, identities, keys, sessions, setActiveTabId, setWorkspaceFocusedSession, t]);
+  }, []);
 
   // Keyboard-interactive authentication (2FA/MFA) event listener
   useEffect(() => {
@@ -651,6 +790,24 @@ function App({ settings }: { settings: SettingsState }) {
   const addConnectionLogRef = useRef(addConnectionLog);
   addConnectionLogRef.current = addConnectionLog;
 
+  const createLocalTerminalWithCurrentShell = useCallback(() => {
+    return createLocalTerminal({
+      shellType: classifyLocalShellType(terminalSettings.localShell, navigator.userAgent),
+    });
+  }, [createLocalTerminal, terminalSettings.localShell]);
+
+  const splitSessionWithCurrentShell = useCallback((sessionId: string, direction: 'horizontal' | 'vertical') => {
+    return splitSession(sessionId, direction, {
+      localShellType: classifyLocalShellType(terminalSettings.localShell, navigator.userAgent),
+    });
+  }, [splitSession, terminalSettings.localShell]);
+
+  const copySessionWithCurrentShell = useCallback((sessionId: string) => {
+    return copySession(sessionId, {
+      localShellType: classifyLocalShellType(terminalSettings.localShell, navigator.userAgent),
+    });
+  }, [copySession, terminalSettings.localShell]);
+
   // Shared hotkey action handler - used by both global handler and terminal callback
   const executeHotkeyAction = useCallback((action: string, e: KeyboardEvent) => {
     switch (action) {
@@ -722,7 +879,7 @@ function App({ settings }: { settings: SettingsState }) {
           localHostname: systemInfoRef.current.hostname,
           saved: false,
         });
-        createLocalTerminal();
+        createLocalTerminalWithCurrentShell();
         break;
       case 'openHosts':
         setActiveTabId('vault');
@@ -761,7 +918,7 @@ function App({ settings }: { settings: SettingsState }) {
         const activeWs = workspaces.find(w => w.id === currentId);
         if (activeSession && !activeSession.workspaceId) {
           // Standalone session - split it
-          splitSession(activeSession.id, 'horizontal');
+          splitSessionWithCurrentShell(activeSession.id, 'horizontal');
         } else if (activeWs) {
           // In a workspace - need to determine focused session
           // For now, we'll need the terminal to handle this via context menu
@@ -776,7 +933,7 @@ function App({ settings }: { settings: SettingsState }) {
         const activeWs = workspaces.find(w => w.id === currentId);
         if (activeSession && !activeSession.workspaceId) {
           // Standalone session - split it
-          splitSession(activeSession.id, 'vertical');
+          splitSessionWithCurrentShell(activeSession.id, 'vertical');
         } else if (activeWs) {
           // In a workspace - need to determine focused session
           if (IS_DEV) console.log('[Hotkey] Split vertical in workspace - use context menu on specific terminal');
@@ -816,7 +973,7 @@ function App({ settings }: { settings: SettingsState }) {
         break;
       }
     }
-  }, [orderedTabs, sessions, workspaces, setActiveTabId, closeSession, closeWorkspace, createLocalTerminal, splitSession, moveFocusInWorkspace, toggleBroadcast]);
+  }, [orderedTabs, sessions, workspaces, setActiveTabId, closeSession, closeWorkspace, createLocalTerminalWithCurrentShell, splitSessionWithCurrentShell, moveFocusInWorkspace, toggleBroadcast]);
 
   // Callback for terminal to invoke app-level hotkey actions
   const handleHotkeyAction = useCallback((action: string, e: KeyboardEvent) => {
@@ -827,96 +984,21 @@ function App({ settings }: { settings: SettingsState }) {
   useEffect(() => {
     if (hotkeyScheme === 'disabled' || isHotkeyRecording) return;
 
-    const isMac = hotkeyScheme === 'mac';
-    if (HOTKEY_DEBUG) {
-      console.log('[Hotkeys] Registering global hotkey handler, scheme:', hotkeyScheme, 'bindings count:', keyBindings.length);
-    }
-
     const handleGlobalKeyDown = (e: KeyboardEvent) => {
-      // Don't handle if we're in an input or textarea (except for Escape)
-      // Note: xterm terminal handles its own key interception via attachCustomKeyEventHandler
-      const target = e.target as HTMLElement;
-      const isFormElement = target.tagName === 'INPUT' || target.tagName === 'TEXTAREA' || target.isContentEditable;
-      const isMonacoElement =
-        target instanceof HTMLElement &&
-        !!target.closest?.('.monaco-editor, .monaco-diff-editor, .monaco-inputbox');
-      const isXtermInput =
-        target instanceof HTMLElement &&
-        !!target.closest?.(".xterm, .xterm-helper-textarea, .xterm-screen, .xterm-viewport");
-
-      // Monaco is not always contentEditable/input, so treat it as an editor surface.
-      if ((isFormElement || isMonacoElement) && !isXtermInput && e.key !== 'Escape') {
-        return;
-      }
-
-      const isTerminalElement =
-        target instanceof HTMLElement &&
-        !!target.closest?.(".xterm, .xterm-helper-textarea, .xterm-screen, .xterm-viewport");
-      const isTerminalInPath = Boolean(
-        e.composedPath?.().some(
-          (node) =>
-            node instanceof HTMLElement &&
-            (node.classList.contains("xterm") ||
-              node.classList.contains("xterm-helper-textarea") ||
-              node.classList.contains("xterm-screen") ||
-              node.classList.contains("xterm-viewport") ||
-              node.hasAttribute("data-session-id")),
-        ),
-      );
-
-      // Check each key binding
-      for (const binding of keyBindings) {
-        const keyStr = isMac ? binding.mac : binding.pc;
-        if (matchesKeyBinding(e, keyStr, isMac)) {
-          if (HOTKEY_DEBUG) console.log('[Hotkeys] Matched binding:', binding.action, keyStr);
-          // SFTP shortcuts are handled by SFTP-specific hooks.
-          if (binding.category === 'sftp') {
-            continue;
-          }
-          // Terminal-specific actions should be handled by the terminal
-          // Don't handle them at app level
-          const terminalActions = ['copy', 'paste', 'selectAll', 'clearBuffer', 'searchTerminal'];
-          if (terminalActions.includes(binding.action)) {
-            if (isTerminalElement) {
-              return; // Let terminal handle it
-            }
-            continue; // Ignore terminal actions outside terminal
-          }
-
-          e.preventDefault();
-          e.stopPropagation();
-          if (HOTKEY_DEBUG) {
-            console.log('[Hotkeys] Global handle', {
-              action: binding.action,
-              key: e.key,
-              meta: e.metaKey,
-              ctrl: e.ctrlKey,
-              alt: e.altKey,
-              shift: e.shiftKey,
-              targetTag: target?.tagName,
-              isTerminalElement,
-              isTerminalInPath,
-            });
-          }
-          executeHotkeyAction(binding.action, e);
-          return;
-        }
-      }
+      _handleGlobalHotkeyKeyDown(e);
     };
 
     window.addEventListener('keydown', handleGlobalKeyDown, true);
     return () => window.removeEventListener('keydown', handleGlobalKeyDown, true);
-  }, [hotkeyScheme, keyBindings, isHotkeyRecording, executeHotkeyAction]);
+  }, [hotkeyScheme, isHotkeyRecording]);
 
   useEffect(() => {
     const onKeyDown = (e: KeyboardEvent) => {
-      if (e.key === 'Escape' && isQuickSwitcherOpen) {
-        setIsQuickSwitcherOpen(false);
-      }
+      _handleEscapeKeyDown(e);
     };
     window.addEventListener('keydown', onKeyDown);
     return () => window.removeEventListener('keydown', onKeyDown);
-  }, [isQuickSwitcherOpen]);
+  }, []);
 
   const quickResults = useMemo(() => {
     if (!isQuickSwitcherOpen) return [];
@@ -929,7 +1011,7 @@ function App({ settings }: { settings: SettingsState }) {
       )
       : hosts;
     return filtered;
-  }, [hosts, quickSearch, isQuickSwitcherOpen]);
+  }, [quickSearch, hosts, isQuickSwitcherOpen]);
 
   const handleDeleteHost = useCallback((hostId: string) => {
     const target = hosts.find(h => h.id === hostId);
@@ -962,7 +1044,7 @@ function App({ settings }: { settings: SettingsState }) {
   // Wrapper to create local terminal with logging
   const handleCreateLocalTerminal = useCallback(() => {
     const { username, hostname } = systemInfoRef.current;
-    const sessionId = createLocalTerminal();
+    const sessionId = createLocalTerminalWithCurrentShell();
     addConnectionLog({
       sessionId,
       hostId: '',
@@ -975,7 +1057,7 @@ function App({ settings }: { settings: SettingsState }) {
       localHostname: hostname,
       saved: false,
     });
-  }, [addConnectionLog, createLocalTerminal]);
+  }, [addConnectionLog, createLocalTerminalWithCurrentShell]);
 
   // Wrapper to connect to host with logging
   const handleConnectToHost = useCallback((host: Host) => {
@@ -1018,10 +1100,10 @@ function App({ settings }: { settings: SettingsState }) {
   }, [addConnectionLog, connectToHost, identities, keys]);
 
   // Wrapper to create serial session with logging
-  const handleConnectSerial = useCallback((config: SerialConfig) => {
+  const handleConnectSerial = useCallback((config: SerialConfig, options?: { charset?: string }) => {
     const { username, hostname } = systemInfoRef.current;
     const portName = config.path.split('/').pop() || config.path;
-    const sessionId = createSerialSession(config);
+    const sessionId = createSerialSession(config, options);
     addConnectionLog({
       sessionId,
       hostId: '',
@@ -1062,31 +1144,12 @@ function App({ settings }: { settings: SettingsState }) {
       });
       if (IS_DEV) console.log('[handleTerminalDataCapture] Updated log with terminalData');
 
-      // Auto-save session log if enabled
-      if (sessionLogsEnabled && sessionLogsDir && data) {
-        import('./infrastructure/services/netcattyBridge').then(({ netcattyBridge }) => {
-          const bridge = netcattyBridge.get();
-          if (bridge?.autoSaveSessionLog) {
-            bridge.autoSaveSessionLog({
-              terminalData: data,
-              hostLabel: matchingLog.hostLabel,
-              hostname: matchingLog.hostname,
-              hostId: matchingLog.hostId,
-              startTime: matchingLog.startTime,
-              format: sessionLogsFormat,
-              directory: sessionLogsDir,
-            }).then(result => {
-              if (IS_DEV) console.log('[handleTerminalDataCapture] Auto-save result:', result);
-            }).catch(err => {
-              console.error('[handleTerminalDataCapture] Auto-save failed:', err);
-            });
-          }
-        });
-      }
+      // Auto-save is now handled by real-time streaming in the main process
+      // via sessionLogStreamManager. No renderer-side fallback needed.
     } else {
       if (IS_DEV) console.log('[handleTerminalDataCapture] No matching log found!');
     }
-  }, [sessions, connectionLogs, updateConnectionLog, sessionLogsEnabled, sessionLogsDir, sessionLogsFormat]);
+  }, [sessions, connectionLogs, updateConnectionLog]);
 
   // Check if host has multiple protocols enabled
   const hasMultipleProtocols = useCallback((host: Host) => {
@@ -1204,7 +1267,7 @@ function App({ settings }: { settings: SettingsState }) {
   }, []);
 
   return (
-    <div className="flex flex-col h-screen text-foreground font-sans netcatty-shell" onContextMenu={handleRootContextMenu}>
+    <div className={cn("flex flex-col h-screen text-foreground font-sans netcatty-shell", immersiveMode && activeTerminalTheme && "immersive-transition")} onContextMenu={handleRootContextMenu}>
       <TopTabs
         theme={resolvedTheme}
         hosts={hosts}
@@ -1217,7 +1280,7 @@ function App({ settings }: { settings: SettingsState }) {
         isMacClient={isMacClient}
         onCloseSession={closeSession}
         onRenameSession={startSessionRename}
-        onCopySession={copySession}
+        onCopySession={copySessionWithCurrentShell}
         onRenameWorkspace={startWorkspaceRename}
         onCloseWorkspace={closeWorkspace}
         onCloseLogView={closeLogView}
@@ -1225,6 +1288,7 @@ function App({ settings }: { settings: SettingsState }) {
         onToggleTheme={handleToggleTheme}
         onOpenSettings={handleOpenSettings}
         onSyncNow={handleSyncNowManual}
+        isImmersiveActive={immersiveMode && activeTerminalTheme !== null}
         onStartSessionDrag={setDraggingSessionId}
         onEndSessionDrag={handleEndSessionDrag}
         onReorderTabs={reorderTabs}
@@ -1246,6 +1310,8 @@ function App({ settings }: { settings: SettingsState }) {
             sessions={sessions}
             hotkeyScheme={hotkeyScheme}
             keyBindings={keyBindings}
+            terminalThemeId={terminalThemeId}
+            terminalFontSize={terminalFontSize}
             onOpenSettings={handleOpenSettings}
             onOpenQuickSwitcher={handleOpenQuickSwitcher}
             onCreateLocalTerminal={handleCreateLocalTerminal}
@@ -1274,7 +1340,20 @@ function App({ settings }: { settings: SettingsState }) {
           />
         </VaultViewContainer>
 
-        <SftpViewMount hosts={hosts} keys={keys} identities={identities} updateHosts={updateHosts} />
+        <SftpViewMount
+          hosts={hosts}
+          keys={keys}
+          identities={identities}
+          updateHosts={updateHosts}
+          sftpDoubleClickBehavior={sftpDoubleClickBehavior}
+          sftpAutoSync={sftpAutoSync}
+          sftpShowHiddenFiles={sftpShowHiddenFiles}
+          sftpUseCompressedUpload={sftpUseCompressedUpload}
+          hotkeyScheme={hotkeyScheme}
+          keyBindings={keyBindings}
+          editorWordWrap={editorWordWrap}
+          setEditorWordWrap={setEditorWordWrap}
+        />
 
         <TerminalLayerMount
           hosts={hosts}
@@ -1311,7 +1390,7 @@ function App({ settings }: { settings: SettingsState }) {
           onSetDraggingSessionId={setDraggingSessionId}
           onToggleWorkspaceViewMode={toggleWorkspaceViewMode}
           onSetWorkspaceFocusedSession={setWorkspaceFocusedSession}
-          onSplitSession={splitSession}
+          onSplitSession={splitSessionWithCurrentShell}
           isBroadcastEnabled={isBroadcastEnabled}
           onToggleBroadcast={toggleBroadcast}
           updateHosts={updateHosts}
@@ -1319,8 +1398,12 @@ function App({ settings }: { settings: SettingsState }) {
           sftpAutoSync={sftpAutoSync}
           sftpShowHiddenFiles={sftpShowHiddenFiles}
           sftpUseCompressedUpload={sftpUseCompressedUpload}
+          sftpAutoOpenSidebar={sftpAutoOpenSidebar}
           editorWordWrap={editorWordWrap}
           setEditorWordWrap={setEditorWordWrap}
+          sessionLogsEnabled={sessionLogsEnabled}
+          sessionLogsDir={sessionLogsDir}
+          sessionLogsFormat={sessionLogsFormat}
         />
 
         {/* Log Views - readonly terminal replays */}

README.ja-JP.md

@@ -59,6 +59,8 @@
 - [ビルドとパッケージ](#ビルドとパッケージ)
 - [技術スタック](#技術スタック)
 - [コントリビューション](#コントリビューション)
+- [コントリビューター](#コントリビューター)
+- [Star 履歴](#star-履歴)
 - [ライセンス](#ライセンス)
 
 ---
@@ -110,37 +112,37 @@
 <a name="デモ"></a>
 # デモ
 
-GIF で機能をさっと確認できます（素材は `screenshots/gifs/`）：
+動画で機能をさっと確認できます（素材は `screenshots/gifs/`）：
 
 ### Vault ビュー：グリッド / リスト / ツリー
 状況に合わせて見え方を切り替え。グリッドで全体像、リストで密度、ツリーで階層を扱えます。
 
-![Vault ビュー：グリッド/リスト/ツリー](screenshots/gifs/gird-list-tre-views.gif)
+https://github.com/user-attachments/assets/e2742987-3131-404d-bd4b-06423e5bfd99
 
 ### 分割ターミナル + セッション管理
 複数セッションを分割ペインで並べて作業。関連タスクを横並びにしてコンテキストスイッチを減らします。
 
-![分割ターミナル + セッション管理](screenshots/gifs/dual-terminal--split-manage.gif)
+https://github.com/user-attachments/assets/377d0c46-cc5a-4382-aa31-5acfd412ce62
 
 ### SFTP：ドラッグ＆ドロップ + 内蔵エディタ
 ドラッグ＆ドロップでファイルを移動し、内蔵エディタでそのまま編集できます。
 
-![SFTP：ドラッグ＆ドロップ + 内蔵エディタ](screenshots/gifs/sftpview-with-drag-and-built-in-editor.gif)
+https://github.com/user-attachments/assets/c6e06af4-b0d5-461c-b0c7-9d6f655af6c7
 
 ### ドラッグでアップロード
 ファイルをそのままドロップしてアップロードを開始。ダイアログ操作を減らせます。
 
-![ドラッグでアップロード](screenshots/gifs/drag-file-upload.gif)
+https://github.com/user-attachments/assets/c8e0c4ff-f020-4e18-9b09-681ec97b003f
 
 ### カスタムテーマ
 テーマを調整して自分の好みに合わせた見た目に。
 
-![カスタムテーマ](screenshots/gifs/custom-themes.gif)
+https://github.com/user-attachments/assets/77e2a693-4ef2-4823-8ca1-9bcbf14ed98b
 
 ### キーワードハイライト
 重要な出力（エラー/警告/マーカーなど）を見つけやすくするために、ハイライトをカスタマイズできます。
 
-![キーワードハイライト](screenshots/gifs/custom-highlight.gif)
+https://github.com/user-attachments/assets/e6516993-ad66-4594-8c28-57426082339b
 
 ---
 
@@ -196,6 +198,7 @@ Netcatty は接続したホストの OS を検出し、ホスト一覧でアイ
   <img src="public/distro/opensuse.svg" width="48" alt="openSUSE" title="openSUSE">
   <img src="public/distro/oracle.svg" width="48" alt="Oracle Linux" title="Oracle Linux">
   <img src="public/distro/kali.svg" width="48" alt="Kali Linux" title="Kali Linux">
+  <img src="public/distro/almalinux.svg" width="48" alt="AlmaLinux" title="AlmaLinux">
 </p>
 
 ---
@@ -305,6 +308,17 @@ npm run pack:linux   # Linux (AppImage + DEB + RPM)
 
 ---
 
+<a name="コントリビューター"></a>
+# コントリビューター
+
+貢献してくださったすべての方に感謝します！
+
+<a href="https://github.com/binaricat/Netcatty/graphs/contributors">
+  <img src="https://contrib.rocks/image?repo=binaricat/Netcatty" />
+</a>
+
+---
+
 <a name="ライセンス"></a>
 # ライセンス
 
@@ -312,6 +326,19 @@ npm run pack:linux   # Linux (AppImage + DEB + RPM)
 
 ---
 
+<a name="star-履歴"></a>
+# Star 履歴
+
+<a href="https://star-history.com/#binaricat/Netcatty&Date">
+ <picture>
+   <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/svg?repos=binaricat/Netcatty&type=Date&theme=dark" />
+   <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/svg?repos=binaricat/Netcatty&type=Date" />
+   <img alt="Star History Chart" src="https://api.star-history.com/svg?repos=binaricat/Netcatty&type=Date" />
+ </picture>
+</a>
+
+---
+
 <p align="center">
   ❤️ を込めて作成 by <a href="https://ko-fi.com/binaricat">binaricat</a>
 </p>

README.md

@@ -5,13 +5,13 @@
 <h1 align="center">Netcatty</h1>
 
 <p align="center">
-  <strong>Modern SSH Client, SFTP Browser & Terminal Manager</strong><br/>
+  <strong>🔥 AI-Powered SSH Client, SFTP Browser & Terminal Manager 🚀</strong><br/>
   <a href="https://netcatty.app"><strong>netcatty.app</strong></a>
 </p>
 
 <p align="center">
   A beautiful, feature-rich SSH workspace built with Electron, React, and xterm.js.<br/>
-  Split terminals, Vault views, SFTP workflows, custom themes, and keyword highlighting — all in one.
+  🔥 Built-in AI Agent · Split terminals · Vault views · SFTP workflows · Custom themes — all in one.
 </p>
 
 <p align="center">
@@ -42,10 +42,52 @@
 
 [![Netcatty Main Interface](screenshots/main-window-dark.png)](screenshots/main-window-dark.png)
 
+---
+
+<a name="catty-agent"></a>
+# 🔥 Catty Agent — Your IT Ops AI Partner
+
+> 🚀 **Boost your IT ops daily work with AI power.** Catty Agent is the built-in AI assistant that understands your servers, executes commands, and handles complex multi-host operations — all through natural conversation.
+
+<p align="center">
+  <img src="screenshots/ai-feature.png" alt="Catty Agent Interface" width="800">
+</p>
+
+### 🔥 What can Catty Agent do?
+
+- 🚀 **Natural language server management** — just tell it what you need, no more memorizing commands
+- 🔥 **Real-time server diagnostics** — check status, inspect logs, monitor resources through conversation
+- 🚀 **Multi-host orchestration** — coordinate tasks across multiple servers simultaneously
+- 🔥 **Intelligent context awareness** — understands your server environment and provides tailored responses
+- 🚀 **One-click complex operations** — set up clusters, deploy services, and more with simple instructions
+
+### 🎬 AI in Action
+
+#### 🔥 Single Host — Intelligent Server Diagnostics
+
+Ask Catty Agent to check a server's health, and it runs the right commands, analyzes the output, and gives you a clear summary — all in seconds.
+
+
+https://github.com/user-attachments/assets/eecf08f1-80bd-49db-886d-b36e93388865
+
+
+
+
+#### 🚀 Multi-Host — Docker Swarm Cluster Setup
+
+Watch Catty Agent orchestrate a Docker Swarm cluster across two servers in one conversation. It handles the init, token exchange, and node joining — you just tell it what you want.
+
+
+
+https://github.com/user-attachments/assets/282027aa-5c9e-4bb1-b2c3-5eea9df2b203
+
+
+
 ---
 
 # Contents <!-- omit in toc -->
 
+- [🔥 Catty Agent — AI Partner](#catty-agent)
 - [What is Netcatty](#what-is-netcatty)
 - [Why Netcatty](#why-netcatty)
 - [Features](#features)
@@ -59,6 +101,8 @@
 - [Build & Package](#build--package)
 - [Tech Stack](#tech-stack)
 - [Contributing](#contributing)
+- [Contributors](#contributors)
+- [Star History](#star-history)
 - [License](#license)
 
 ---
@@ -111,37 +155,53 @@ If you regularly work with a fleet of servers, Netcatty is built for speed and f
 <a name="demos"></a>
 # Demos
 
-GIF previews (stored in `screenshots/gifs/`), rendered inline on GitHub:
+Video previews (stored in `screenshots/gifs/`), rendered inline on GitHub:
 
 ### Vault views: grid / list / tree
 Switch between different Vault views to match your workflow: overview in grid, dense scanning in list, and hierarchical navigation in tree.
 
-![Vault views: grid/list/tree](screenshots/gifs/gird-list-tre-views.gif)
+https://github.com/user-attachments/assets/e2742987-3131-404d-bd4b-06423e5bfd99
+
 
 ### Split terminals + session management
 Work in multiple sessions at once with split panes. Keep related tasks side-by-side and reduce context switching.
 
-![Split terminals + session management](screenshots/gifs/dual-terminal--split-manage.gif)
+https://github.com/user-attachments/assets/377d0c46-cc5a-4382-aa31-5acfd412ce62
+
+
 
 ### SFTP: drag & drop + built-in editor
 Move files with drag & drop, then edit quickly using the built-in editor without leaving the app.
 
-![SFTP: drag & drop + built-in editor](screenshots/gifs/sftpview-with-drag-and-built-in-editor.gif)
+https://github.com/user-attachments/assets/c6e06af4-b0d5-461c-b0c7-9d6f655af6c7
+
+
+
+
 
 ### Drag file upload
 Drop files into the app to kick off uploads without hunting through dialogs.
 
-![Drag file upload](screenshots/gifs/drag-file-upload.gif)
+https://github.com/user-attachments/assets/c8e0c4ff-f020-4e18-9b09-681ec97b003f
+
+
+
 
 ### Custom themes
 Make Netcatty yours: customize themes and UI appearance.
 
-![Custom themes](screenshots/gifs/custom-themes.gif)
+https://github.com/user-attachments/assets/77e2a693-4ef2-4823-8ca1-9bcbf14ed98b
+
+
+
 
 ### Keyword highlighting
 Highlight important terminal output so errors, warnings, and key events stand out at a glance.
 
-![Keyword highlighting](screenshots/gifs/custom-highlight.gif)
+https://github.com/user-attachments/assets/e6516993-ad66-4594-8c28-57426082339b
+
+
+
 
 ---
 
@@ -197,6 +257,7 @@ Netcatty automatically detects and displays OS icons for connected hosts:
   <img src="public/distro/opensuse.svg" width="48" alt="openSUSE" title="openSUSE">
   <img src="public/distro/oracle.svg" width="48" alt="Oracle Linux" title="Oracle Linux">
   <img src="public/distro/kali.svg" width="48" alt="Kali Linux" title="Kali Linux">
+  <img src="public/distro/almalinux.svg" width="48" alt="AlmaLinux" title="AlmaLinux">
 </p>
 
 <a name="getting-started"></a>
@@ -309,7 +370,9 @@ See [agents.md](agents.md) for architecture overview and coding conventions.
 
 Thanks to all the people who contribute!
 
-See: https://github.com/binaricat/Netcatty/graphs/contributors
+<a href="https://github.com/binaricat/Netcatty/graphs/contributors">
+  <img src="https://contrib.rocks/image?repo=binaricat/Netcatty" />
+</a>
 
 ---
 
@@ -320,6 +383,19 @@ This project is licensed under the **GPL-3.0 License** - see the [LICENSE](LICEN
 
 ---
 
+<a name="star-history"></a>
+# Star History
+
+<a href="https://star-history.com/#binaricat/Netcatty&Date">
+ <picture>
+   <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/svg?repos=binaricat/Netcatty&type=Date&theme=dark" />
+   <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/svg?repos=binaricat/Netcatty&type=Date" />
+   <img alt="Star History Chart" src="https://api.star-history.com/svg?repos=binaricat/Netcatty&type=Date" />
+ </picture>
+</a>
+
+---
+
 <p align="center">
   Made with ❤️ by <a href="https://ko-fi.com/binaricat">binaricat</a>
 </p>

README.zh-CN.md

@@ -59,6 +59,8 @@
 - [构建与打包](#构建与打包)
 - [技术栈](#技术栈)
 - [参与贡献](#参与贡献)
+- [贡献者](#贡献者)
+- [Star 历史](#star-历史)
 - [开源协议](#开源协议)
 
 ---
@@ -111,37 +113,37 @@
 <a name="演示"></a>
 # 演示
 
-GIF 预览（素材均在 `screenshots/gifs/`），在 GitHub README 中可直接观看：
+视频预览（素材均在 `screenshots/gifs/`），在 GitHub README 中可直接观看：
 
 ### Vault 视图：网格 / 列表 / 树形
 根据不同场景自由切换视图：网格适合总览，列表适合密集浏览，树形适合层级导航与整理。
 
-![Vault 视图：网格/列表/树形](screenshots/gifs/gird-list-tre-views.gif)
+https://github.com/user-attachments/assets/e2742987-3131-404d-bd4b-06423e5bfd99
 
 ### 分屏终端 + 会话管理
 用分屏把多个会话并排放在同一个工作区里，降低来回切换窗口/标签页的成本。
 
-![分屏终端 + 会话管理](screenshots/gifs/dual-terminal--split-manage.gif)
+https://github.com/user-attachments/assets/377d0c46-cc5a-4382-aa31-5acfd412ce62
 
 ### SFTP：拖拽 + 内置编辑器
 通过拖拽完成文件传输，并用内置编辑器快速修改文件内容，不用来回切换工具。
 
-![SFTP：拖拽 + 内置编辑器](screenshots/gifs/sftpview-with-drag-and-built-in-editor.gif)
+https://github.com/user-attachments/assets/c6e06af4-b0d5-461c-b0c7-9d6f655af6c7
 
 ### 拖拽文件上传
 把文件直接拖进应用即可触发上传流程，省去多层对话框与路径选择。
 
-![拖拽文件上传](screenshots/gifs/drag-file-upload.gif)
+https://github.com/user-attachments/assets/c8e0c4ff-f020-4e18-9b09-681ec97b003f
 
 ### 自定义主题
 按自己的审美与习惯定制主题与界面外观，让日常使用更顺手。
 
-![自定义主题](screenshots/gifs/custom-themes.gif)
+https://github.com/user-attachments/assets/77e2a693-4ef2-4823-8ca1-9bcbf14ed98b
 
 ### 关键词高亮
 让关键输出一眼可见：错误、告警或特定标记被高亮后更容易扫到与定位。
 
-![关键词高亮](screenshots/gifs/custom-highlight.gif)
+https://github.com/user-attachments/assets/e6516993-ad66-4594-8c28-57426082339b
 
 ---
 
@@ -197,6 +199,7 @@ Netcatty 会自动识别并在主机列表中展示对应的系统图标：
   <img src="public/distro/opensuse.svg" width="48" alt="openSUSE" title="openSUSE">
   <img src="public/distro/oracle.svg" width="48" alt="Oracle Linux" title="Oracle Linux">
   <img src="public/distro/kali.svg" width="48" alt="Kali Linux" title="Kali Linux">
+  <img src="public/distro/almalinux.svg" width="48" alt="AlmaLinux" title="AlmaLinux">
 </p>
 
 <a name="快速开始"></a>
@@ -309,7 +312,9 @@ npm run pack:linux   # Linux (AppImage, deb, rpm)
 
 感谢所有参与贡献的人！
 
-查看：https://github.com/binaricat/Netcatty/graphs/contributors
+<a href="https://github.com/binaricat/Netcatty/graphs/contributors">
+  <img src="https://contrib.rocks/image?repo=binaricat/Netcatty" />
+</a>
 
 ---
 
@@ -320,6 +325,19 @@ npm run pack:linux   # Linux (AppImage, deb, rpm)
 
 ---
 
+<a name="star-历史"></a>
+# Star 历史
+
+<a href="https://star-history.com/#binaricat/Netcatty&Date">
+ <picture>
+   <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/svg?repos=binaricat/Netcatty&type=Date&theme=dark" />
+   <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/svg?repos=binaricat/Netcatty&type=Date" />
+   <img alt="Star History Chart" src="https://api.star-history.com/svg?repos=binaricat/Netcatty&type=Date" />
+ </picture>
+</a>
+
+---
+
 <p align="center">
   用 ❤️ 制作，作者 <a href="https://ko-fi.com/binaricat">binaricat</a>
 </p>

application/i18n/locales/en.ts

@@ -5,6 +5,9 @@ const en: Messages = {
   'common.save': 'Save',
   'common.cancel': 'Cancel',
   'common.close': 'Close',
+  'common.reset': 'Reset',
+  'common.zoomIn': 'Zoom in',
+  'common.zoomOut': 'Zoom out',
   'common.settings': 'Settings',
   'common.search': 'Search',
   'common.searchPlaceholder': 'Search...',
@@ -30,6 +33,7 @@ const en: Messages = {
   'common.back': 'Back',
   'common.apply': 'Apply',
   'common.use': 'Use',
+  'common.useGlobal': 'Use global',
   'common.saveChanges': 'Save Changes',
   'common.advanced': 'Advanced',
   'common.left': 'Left',
@@ -50,6 +54,7 @@ const en: Messages = {
   // Dialogs / prompts
   'confirm.deleteHost': 'Delete Host "{name}"?',
   'confirm.deleteIdentity': 'Delete Identity "{name}"?',
+  'confirm.removeProvider': 'Remove provider "{name}"?',
   'dialog.createWorkspace.title': 'Create Workspace',
   'dialog.renameWorkspace.title': 'Rename workspace',
   'dialog.renameSession.title': 'Rename session',
@@ -94,6 +99,21 @@ const en: Messages = {
   'settings.system.credentials.unavailableHint': 'Credentials encrypted on another user profile or machine cannot be decrypted here. Re-enter and save credentials on this device.',
   'settings.system.credentials.portabilityHint': 'Cloud Sync is portable because it uses your master key encryption. Local safeStorage encryption is device/user scoped.',
 
+  // Settings > System > Crash Logs
+  'settings.system.crashLogs.title': 'Crash Logs',
+  'settings.system.crashLogs.description': 'View error logs from the main process to help diagnose unexpected behavior.',
+  'settings.system.crashLogs.noLogs': 'No crash logs found.',
+  'settings.system.crashLogs.entries': '{count} entries',
+  'settings.system.crashLogs.clear': 'Clear all logs',
+  'settings.system.crashLogs.cleared': 'Cleared {count} log file(s).',
+  'settings.system.crashLogs.source': 'Source',
+  'settings.system.crashLogs.time': 'Time',
+  'settings.system.crashLogs.message': 'Message',
+  'settings.system.crashLogs.stack': 'Stack Trace',
+  'settings.system.crashLogs.hint': 'Crash logs are retained for 30 days and automatically rotated.',
+  'settings.system.crashLogs.collapse': 'Collapse',
+  'settings.system.crashLogs.expand': 'Show details',
+
   // Settings > System > Software Update
   'settings.update.title': 'Software Update',
   'settings.update.currentVersion': 'Current version',
@@ -114,6 +134,8 @@ const en: Messages = {
   'settings.update.lastCheckedMinutesAgo': '{n} min ago',
   'settings.update.lastCheckedHoursAgo': '{n} hr ago',
   'settings.update.lastCheckedPrefix': 'Last checked: ',
+  'settings.update.autoUpdateEnabled': 'Automatic Updates',
+  'settings.update.autoUpdateEnabledDesc': 'Automatically check and download updates when available.',
 
   // Settings > Session Logs
   'settings.sessionLogs.title': 'Session Logs',
@@ -141,6 +163,8 @@ const en: Messages = {
   'settings.globalHotkey.reset': 'Reset to default',
   'settings.globalHotkey.closeToTray': 'Close to System Tray',
   'settings.globalHotkey.closeToTrayDesc': 'When enabled, closing the window will minimize to the system tray instead of quitting.',
+  'settings.globalHotkey.enabled': 'Enable Global Hotkey',
+  'settings.globalHotkey.enabledDesc': 'Register system-wide keyboard shortcuts. When disabled, all global hotkeys are unregistered.',
   'settings.globalHotkey.hint': 'Global hotkey works system-wide to quickly show or hide the window (Quake-style terminal).',
 
   // Tray Panel
@@ -207,6 +231,9 @@ const en: Messages = {
   'settings.appearance.themeColor.desc': 'Pick a preset palette for each theme',
   'settings.appearance.themeColor.light': 'Light palette',
   'settings.appearance.themeColor.dark': 'Dark palette',
+  'settings.appearance.immersiveMode': 'Immersive Mode',
+  'settings.appearance.immersiveMode.desc':
+    'When enabled, the UI chrome (tab bar, sidebar, status bar) adapts its colors to match the active terminal theme for a visually cohesive experience.',
   'settings.appearance.customCss': 'Custom CSS',
   'settings.appearance.customCss.desc':
     'Add custom CSS to personalize the app appearance. Changes apply immediately.',
@@ -265,6 +292,17 @@ const en: Messages = {
   'settings.terminal.behavior.bracketedPaste': 'Bracketed paste mode',
   'settings.terminal.behavior.bracketedPaste.desc':
     'Wrap pasted text with escape sequences so the shell can distinguish paste from typed input. Disable if you see ^[[200~ artifacts.',
+  'settings.terminal.behavior.osc52Clipboard': 'OSC-52 clipboard',
+  'settings.terminal.behavior.osc52Clipboard.desc':
+    'Allow remote programs (tmux, vim, etc.) to access the local clipboard via OSC-52 escape sequences.',
+  'settings.terminal.behavior.osc52Clipboard.off': 'Disabled',
+  'settings.terminal.behavior.osc52Clipboard.writeOnly': 'Write only',
+  'settings.terminal.behavior.osc52Clipboard.readWrite': 'Read & Write',
+  'settings.terminal.behavior.osc52Clipboard.prompt': 'Write + Prompt on Read',
+  'terminal.osc52.readPrompt.title': 'Clipboard Read Request',
+  'terminal.osc52.readPrompt.desc': 'A remote program is requesting to read your clipboard. Allow?',
+  'terminal.osc52.readPrompt.allow': 'Allow',
+  'terminal.osc52.readPrompt.deny': 'Deny',
   'settings.terminal.behavior.scrollOnInput': 'Scroll on input',
   'settings.terminal.behavior.scrollOnInput.desc': 'Scroll terminal to bottom when typing',
   'settings.terminal.behavior.scrollOnOutput': 'Scroll on output',
@@ -276,6 +314,9 @@ const en: Messages = {
   'settings.terminal.behavior.scrollOnPaste': 'Scroll on paste',
   'settings.terminal.behavior.scrollOnPaste.desc':
     'Scroll terminal to bottom when pasting text',
+  'settings.terminal.behavior.smoothScrolling': 'Smooth scrolling',
+  'settings.terminal.behavior.smoothScrolling.desc':
+    'Animate terminal viewport scrolling instead of jumping instantly',
   'settings.terminal.behavior.linkModifier': 'Link modifier key',
   'settings.terminal.behavior.linkModifier.desc': 'Hold this key to click on links in terminal',
   'settings.terminal.behavior.linkModifier.none': 'None (click directly)',
@@ -314,6 +355,15 @@ const en: Messages = {
   'settings.terminal.rendering.renderer.desc': 'Choose the terminal rendering technology. Auto will use Canvas on low-memory devices. Changes take effect on new terminal sessions.',
   'settings.terminal.rendering.auto': 'Auto',
 
+  // Settings > Terminal > Autocomplete
+  'settings.terminal.section.autocomplete': 'Autocomplete',
+  'settings.terminal.autocomplete.enabled': 'Enable autocomplete',
+  'settings.terminal.autocomplete.enabled.desc': 'Show command suggestions based on history and command specs as you type.',
+  'settings.terminal.autocomplete.ghostText': 'Ghost text',
+  'settings.terminal.autocomplete.ghostText.desc': 'Show inline gray suggestion text after the cursor (like fish shell).',
+  'settings.terminal.autocomplete.popupMenu': 'Popup menu',
+  'settings.terminal.autocomplete.popupMenu.desc': 'Show a floating list of multiple suggestions.',
+
   // Settings > Shortcuts
   'settings.shortcuts.section.scheme': 'Hotkey Scheme',
   'settings.shortcuts.scheme.label': 'Keyboard shortcuts',
@@ -563,6 +613,8 @@ const en: Messages = {
   'sftp.filter.placeholder': 'Filter by filename...',
   'sftp.bookmark.add': 'Bookmark this path',
   'sftp.bookmark.remove': 'Remove bookmark',
+  'sftp.bookmark.addGlobal': '+Global',
+  'sftp.bookmark.addGlobalTooltip': 'Save as global bookmark (shared across all hosts)',
   'sftp.bookmark.empty': 'No bookmarks yet',
   'sftp.columns.name': 'Name',
   'sftp.columns.modified': 'Modified',
@@ -593,12 +645,14 @@ const en: Messages = {
   'sftp.path.doubleClickToEdit': 'Double-click to edit path',
   'sftp.showHiddenPaths': 'Hidden paths',
   'sftp.task.waiting': 'Waiting...',
+  'sftp.transfer.preparing': 'preparing...',
   'sftp.status.loading': 'Loading...',
   'sftp.status.uploading': 'Uploading...',
   'sftp.status.ready': 'Ready',
   'sftp.transfers': 'Transfers',
   'sftp.transfers.active': '{count} active',
   'sftp.transfers.clearCompleted': 'Clear completed',
+  'sftp.transfers.calculatingTotal': 'Calculating total size...',
   'sftp.goUp': 'Go up',
   'sftp.goToTerminalCwd': 'Go to terminal directory',
   'sftp.encoding.label': 'Filename Encoding',
@@ -672,6 +726,7 @@ const en: Messages = {
   'sftp.upload.phase.compressed': 'Compressed',
 
   // SFTP File Opener
+  'sftp.context.copyPath': 'Copy file path',
   'sftp.context.openWith': 'Open with...',
   'sftp.context.edit': 'Edit',
   'sftp.context.preview': 'Preview',
@@ -729,6 +784,13 @@ const en: Messages = {
   'settings.sftp.autoSync.desc': 'Automatically sync file changes back to the remote server when opening files with external applications',
   'settings.sftp.autoSync.enable': 'Enable auto-sync',
   'settings.sftp.autoSync.enableDesc': 'When you save a file in an external application, changes will be automatically uploaded to the remote server',
+
+  // Settings > SFTP Auto Open Sidebar
+  'settings.sftp.autoOpenSidebar': 'Auto-open sidebar on connect',
+  'settings.sftp.autoOpenSidebar.desc': 'Automatically open the SFTP file browser sidebar when connecting to a host',
+  'settings.sftp.autoOpenSidebar.enable': 'Enable auto-open sidebar',
+  'settings.sftp.autoOpenSidebar.enableDesc': 'The SFTP sidebar will open automatically when a terminal session connects to a remote host',
+
   'sftp.autoSync.success': 'File synced to remote: {fileName}',
   'sftp.autoSync.error': 'Failed to sync file: {error}',
 
@@ -816,6 +878,29 @@ const en: Messages = {
   'hostDetails.section.credentials': 'Credentials',
   'hostDetails.section.portCredentials': 'Port & Credentials',
   'hostDetails.section.appearance': 'Appearance',
+  'hostDetails.distro.title': 'Linux Distribution',
+  'hostDetails.distro.desc': 'Auto-detect on connect, or override the distro icon manually.',
+  'hostDetails.distro.mode': 'Source',
+  'hostDetails.distro.mode.auto': 'Auto-detect',
+  'hostDetails.distro.mode.manual': 'Manual override',
+  'hostDetails.distro.detectedLabel': 'Current',
+  'hostDetails.distro.manualLabel': 'Override',
+  'hostDetails.distro.pending': 'Detect after first connection',
+  'hostDetails.distro.unknown': 'Unknown',
+  'hostDetails.distro.option.linux': 'Generic Linux',
+  'hostDetails.distro.option.ubuntu': 'Ubuntu',
+  'hostDetails.distro.option.debian': 'Debian',
+  'hostDetails.distro.option.centos': 'CentOS',
+  'hostDetails.distro.option.rocky': 'Rocky Linux',
+  'hostDetails.distro.option.fedora': 'Fedora',
+  'hostDetails.distro.option.arch': 'Arch Linux',
+  'hostDetails.distro.option.alpine': 'Alpine',
+  'hostDetails.distro.option.amazon': 'Amazon Linux',
+  'hostDetails.distro.option.opensuse': 'openSUSE / SLES',
+  'hostDetails.distro.option.redhat': 'Red Hat / RHEL',
+  'hostDetails.distro.option.almalinux': 'AlmaLinux',
+  'hostDetails.distro.option.oracle': 'Oracle Linux',
+  'hostDetails.distro.option.kali': 'Kali Linux',
   'hostDetails.section.mosh': 'Mosh',
   'hostDetails.username.placeholder': 'Username',
   'hostDetails.password.placeholder': 'Password',
@@ -824,9 +909,12 @@ const en: Messages = {
   'hostDetails.password.save': 'Save password',
   'hostDetails.identity.suggestions': 'Identities',
   'hostDetails.identity.missing': 'Identity not found',
-  'hostDetails.credential.keyCertificate': 'Key, Certificate',
+  'hostDetails.credential.keyCertificate': 'Key, Certificate, Local Key File',
   'hostDetails.credential.key': 'Key',
   'hostDetails.credential.certificate': 'Certificate',
+  'hostDetails.credential.localKeyFile': 'Local Key File',
+  'hostDetails.credential.localKeyFilePlaceholder': '~/.ssh/id_ed25519',
+  'hostDetails.credential.browseKeyFile': 'Browse...',
   'hostDetails.credential.missing': 'Credential not found',
   'hostDetails.keys.search': 'Search keys...',
   'hostDetails.keys.empty': 'No keys available',
@@ -834,9 +922,13 @@ const en: Messages = {
   'hostDetails.certs.empty': 'No certificates available',
   'hostDetails.agentForwarding': 'Forward SSH Agent',
   'hostDetails.agentForwarding.desc': 'Allow remote server to use your local SSH keys (e.g., for git operations)',
-  'hostDetails.agentForwarding.agentNotRunning': 'SSH Agent is not running',
-  'hostDetails.agentForwarding.agentNotRunningHint': 'Enable OpenSSH Authentication Agent service in Windows Services (services.msc) for agent forwarding to work.',
+  'hostDetails.agentForwarding.agentNotRunning': 'SSH Agent is not available',
+  'hostDetails.agentForwarding.agentNotRunningHint': 'No SSH agent detected. Enable OpenSSH Authentication Agent in Windows Services, or use a compatible agent such as Bitwarden, 1Password, or gpg-agent.',
   'hostDetails.section.agentForwarding': 'SSH Agent',
+  'hostDetails.section.deviceType': 'Device Type',
+  'hostDetails.deviceType': 'Network Device Mode',
+  'hostDetails.deviceType.desc': 'Enable for network equipment (switches, routers, firewalls) connected via SSH. Commands are sent as-is without shell wrapping, compatible with vendor CLIs like Huawei VRP and Cisco IOS.',
+  'hostDetails.deviceType.warning': 'AI agent commands will be sent directly without exit code tracking. Only enable for devices that do not run a standard shell.',
   'hostDetails.section.legacyAlgorithms': 'Legacy Algorithms',
   'hostDetails.legacyAlgorithms': 'Allow Legacy Algorithms',
   'hostDetails.legacyAlgorithms.desc': 'Enable deprecated SSH algorithms (diffie-hellman-group1, ssh-dss, 3des-cbc, etc.) for connecting to older network equipment.',
@@ -1032,6 +1124,7 @@ const en: Messages = {
   'terminal.progress.disconnected': 'Disconnected',
   'terminal.progress.cancelling': 'Cancelling...',
   'terminal.progress.startOver': 'Start over',
+  'terminal.connection.dismissDisconnectedDialog': 'Dismiss disconnected notice',
   'terminal.connection.chainOf': 'Chain {current} of {total}',
   'terminal.connection.showLogs': 'Show logs',
   'terminal.connection.hideLogs': 'Hide logs',
@@ -1044,6 +1137,8 @@ const en: Messages = {
   'terminal.themeModal.tab.theme': 'Theme',
   'terminal.themeModal.tab.font': 'Font',
   'terminal.themeModal.tab.custom': 'Custom',
+  'terminal.themeModal.globalTheme': 'Global Theme',
+  'terminal.themeModal.globalFont': 'Global Font',
   'terminal.themeModal.fontSize': 'Font Size',
   'terminal.themeModal.livePreview': 'Live Preview',
   'terminal.themeModal.themeType': '{type} theme',
@@ -1402,6 +1497,7 @@ const en: Messages = {
   'snippets.renameDialog.error.duplicate': 'A package with this name already exists',
   'snippets.renameDialog.error.invalidChars': 'Package name can only contain letters, numbers, hyphens, and underscores',
 
+  'snippets.field.noAutoRun': 'Paste only (do not auto-execute)',
   // Snippet Shortkey
   'snippets.field.shortkey': 'Keyboard Shortcut',
   'snippets.shortkey.placeholder': 'Click to set shortcut',
@@ -1441,6 +1537,7 @@ const en: Messages = {
   'serial.field.localEchoDesc': 'Echo typed characters locally (for devices without remote echo)',
   'serial.field.lineMode': 'Line Mode',
   'serial.field.lineModeDesc': 'Buffer input and send on Enter (instead of character-by-character)',
+  'serial.field.charset': 'Charset',
   'serial.connectionError': 'Failed to connect to serial port',
   'serial.field.baudRatePlaceholder': 'Select or enter baud rate...',
   'serial.field.baudRateEmpty': 'Enter a custom baud rate',
@@ -1478,6 +1575,167 @@ const en: Messages = {
 
   // Text Editor
   'sftp.editor.wordWrap': 'Word Wrap',
+
+  // AI Settings
+  'ai.agentSettings': 'Agent Settings',
+  'ai.title': 'AI',
+  'ai.description': 'Configure AI providers, agents, and safety settings',
+  'ai.providers': 'Providers',
+  'ai.providers.empty': 'No providers configured. Add a provider to get started.',
+  'ai.providers.add': 'Add Provider',
+  'ai.providers.active': 'Active',
+  'ai.providers.apiKeyConfigured': 'API key configured',
+  'ai.providers.noApiKey': 'No API key',
+  'ai.providers.configure': 'Configure',
+  'ai.providers.remove': 'Remove',
+  'ai.providers.name': 'Display Name',
+  'ai.providers.name.placeholder': 'e.g. My Provider',
+  'ai.providers.apiKey': 'API Key',
+  'ai.providers.apiKey.placeholder': 'Enter API key',
+  'ai.providers.apiKey.decrypting': 'Decrypting...',
+  'ai.providers.baseUrl': 'Base URL',
+  'ai.providers.skipTLSVerify': 'Skip TLS certificate verification (for self-signed certs)',
+  'ai.providers.defaultModel': 'Default Model',
+  'ai.providers.defaultModel.placeholder': 'e.g. gpt-4o, claude-sonnet-4-20250514',
+  'ai.providers.refreshModels': 'Refresh models',
+  'ai.providers.searchModel': 'Search or type model ID...',
+  'ai.providers.filterModels': 'Filter models...',
+  'ai.providers.loadingModels': 'Loading models...',
+  'ai.providers.noMatchingModels': 'No matching models',
+  'ai.providers.clickToLoadModels': 'Click to load models',
+  'ai.providers.showingModels': 'Showing first 100 of {count} models. Type to filter.',
+  'ai.providers.advancedParams': 'Advanced Parameters',
+  'ai.providers.advancedParams.hint': 'Leave blank to use provider defaults.',
+  'ai.providers.advancedParams.maxTokens.placeholder': 'e.g. 4096',
+  'ai.providers.advancedParams.default': 'Provider default',
+
+  // AI Codex
+  'ai.codex': 'Codex',
+  'ai.codex.title': 'Codex CLI',
+  'ai.codex.description': 'Uses codex + codex-acp for ACP protocol streaming. Login with ChatGPT subscription here, or configure an OpenAI provider API key (passed as CODEX_API_KEY).',
+  'ai.codex.detecting': 'Detecting...',
+  'ai.codex.notFound': 'Not found',
+  'ai.codex.awaitingLogin': 'Awaiting login',
+  'ai.codex.connectedChatGPT': 'Connected via ChatGPT',
+  'ai.codex.connectedApiKey': 'Connected via API key',
+  'ai.codex.notConnected': 'Not connected',
+  'ai.codex.statusUnknown': 'Status unknown',
+  'ai.codex.path': 'Path:',
+  'ai.codex.notFoundHint': 'Could not find codex in PATH. Install it or specify the executable path below.',
+  'ai.codex.customPathPlaceholder': 'e.g. /usr/local/bin/codex',
+  'ai.codex.check': 'Check',
+  'ai.codex.openLogin': 'Open Login',
+  'ai.codex.logout': 'Logout',
+  'ai.codex.connectChatGPT': 'Connect ChatGPT',
+  'ai.codex.refreshStatus': 'Refresh Status',
+  'ai.codex.apiKeyHint': 'Enabled OpenAI provider API key detected. Codex ACP can also authenticate without ChatGPT login.',
+
+  // AI Claude Code
+  'ai.claude.title': 'Claude Code',
+  'ai.claude.description': "Anthropic's agentic coding assistant. Uses claude-agent-acp for ACP protocol streaming.",
+  'ai.claude.detecting': 'Detecting...',
+  'ai.claude.detected': 'Detected',
+  'ai.claude.notFound': 'Not found',
+  'ai.claude.path': 'Path:',
+  'ai.claude.notFoundHint': 'Could not find claude in PATH. Install it or specify the executable path below.',
+  'ai.claude.customPathPlaceholder': 'e.g. /usr/local/bin/claude',
+  'ai.claude.check': 'Check',
+
+  // AI Default Agent
+  'ai.defaultAgent': 'Default Agent',
+  'ai.defaultAgent.description': 'Agent to use when starting a new AI session',
+  'ai.defaultAgent.catty': 'Catty (Built-in)',
+
+  // AI Chat
+  'ai.chat.noProvider': 'No AI provider is configured. Go to **Settings → AI → Providers** to add and enable a provider.',
+  'ai.chat.toolDenied': 'Action was rejected by the user.',
+  'ai.chat.toolApproved': 'Approved',
+  'ai.chat.toolApprovalHint': 'Press Enter to approve, Escape to reject',
+  'ai.chat.approve': 'Approve',
+  'ai.chat.reject': 'Reject',
+  'ai.chat.toolLabel': 'Tool',
+  'ai.chat.targetLabel': 'Target',
+  'ai.chat.permissionRequired': 'Permission Required',
+  'ai.chat.permissionDescription': 'The AI agent wants to execute a tool call that requires your approval.',
+  'ai.chat.commandBlocked': 'This command is blocked by your security policy and cannot be executed.',
+  'ai.chat.recommendAllow': 'Allow',
+  'ai.chat.recommendConfirm': 'Confirm',
+  'ai.chat.recommendDeny': 'Deny',
+  'ai.chat.exportConversation': 'Export conversation',
+  'ai.chat.exportAs': 'Export As',
+  'ai.chat.exportMarkdown': 'Markdown',
+  'ai.chat.exportJSON': 'JSON',
+  'ai.chat.exportPlainText': 'Plain Text',
+  'ai.chat.thinking': 'Thinking',
+  'ai.chat.thoughtFor': 'Thought for {duration}',
+  'ai.chat.thought': 'Thought',
+  'ai.chat.agents': 'Agents',
+  'ai.chat.detectedOnMachine': 'Detected on this machine',
+  'ai.chat.rescan': 'Re-scan',
+  'ai.chat.permObserver': 'Observer',
+  'ai.chat.permConfirm': 'Confirm',
+  'ai.chat.permAuto': 'Auto',
+  'ai.chat.permObserverDesc': 'Read only',
+  'ai.chat.permConfirmDesc': 'Ask before actions',
+  'ai.chat.permAutoDesc': 'Execute freely',
+  'ai.chat.emptyHint': 'Ask about your servers, run commands, or get help with configurations.',
+  'ai.chat.placeholder': 'Message {agent} — @ to include context, / for commands',
+  'ai.chat.placeholderDefault': 'Message Catty Agent...',
+  'ai.chat.noModel': 'No model',
+  'ai.chat.recent': 'Recent',
+  'ai.chat.viewAll': 'View All',
+  'ai.chat.untitled': 'Untitled',
+  'ai.chat.justNow': 'Just now',
+  'ai.chat.minutesAgo': '{n}m ago',
+  'ai.chat.hoursAgo': '{n}h ago',
+  'ai.chat.daysAgo': '{n}d ago',
+  'ai.chat.newChat': 'New Chat',
+  'ai.chat.allSessions': 'All Sessions',
+  'ai.chat.noSessions': 'No previous sessions',
+  'ai.chat.retryHint': 'You can retry by sending your message again.',
+  'ai.chat.approvalTimeout': 'Tool approval timed out after 5 minutes. You can retry by sending your message again.',
+  'ai.chat.menuHosts': 'Hosts',
+  'ai.chat.menuContext': 'Context',
+  'ai.chat.menuFiles': 'Files',
+  'ai.chat.menuImage': 'Image',
+  'ai.chat.menuMentionHost': 'Mention Host',
+
+  // AI Error
+  'ai.codex.bridgeError': 'Codex main-process handlers are not loaded yet. Fully restart Netcatty, or restart the Electron dev process, then try again.',
+
+  // AI Web Search
+  'ai.webSearch.title': 'Web Search',
+  'ai.webSearch.enable': 'Enable Web Search',
+  'ai.webSearch.enable.description': 'Allow the AI agent to search the web for current information.',
+  'ai.webSearch.provider': 'Search Provider',
+  'ai.webSearch.provider.description': 'Choose a web search API provider.',
+  'ai.webSearch.apiKey': 'API Key',
+  'ai.webSearch.apiKey.description': 'API key for the selected search provider.',
+  'ai.webSearch.apiKey.placeholder': 'Enter API key...',
+  'ai.webSearch.apiHost': 'API Host',
+  'ai.webSearch.apiHost.description': 'Custom API endpoint. Leave default unless you use a proxy.',
+  'ai.webSearch.apiHost.searxngDescription': 'URL of your SearXNG instance (required).',
+  'ai.webSearch.maxResults': 'Max Results',
+  'ai.webSearch.maxResults.description': 'Maximum number of search results to return (1-20).',
+
+  // AI Safety Settings
+  'ai.safety.title': 'Safety',
+  'ai.safety.permissionMode': 'Permission Mode',
+  'ai.safety.permissionMode.description': 'Controls how the AI interacts with your terminals. Observer mode blocks all write operations via MCP Server, enforced for both built-in and ACP agents. Confirm mode is advisory for ACP agents (they control their own tool approval flow).',
+  'ai.safety.permissionMode.observer': 'Observer - Read only, no actions',
+  'ai.safety.permissionMode.confirm': 'Confirm - Ask before actions',
+  'ai.safety.permissionMode.autonomous': 'Autonomous - Execute freely',
+  'ai.safety.commandTimeout': 'Command Timeout',
+  'ai.safety.commandTimeout.description': 'Maximum seconds a command can run before being terminated. Applies to both built-in and ACP agents.',
+  'ai.safety.commandTimeout.unit': 'sec',
+  'ai.safety.maxIterations': 'Max Iterations',
+  'ai.safety.maxIterations.description': 'Maximum number of AI tool-use loops to prevent runaway execution. ACP agents may have their own internal iteration limits that take precedence.',
+  'ai.safety.blocklist': 'Command Blocklist',
+  'ai.safety.blocklist.description': 'Regex patterns to block dangerous commands. Applies to both built-in and ACP agents via MCP Server.',
+  'ai.safety.blocklist.placeholder': 'Regex pattern...',
+  'ai.safety.blocklist.reset': 'Reset to defaults',
+  'ai.safety.blocklist.add': 'Add pattern',
+  'ai.safety.note': 'Command Blocklist, Command Timeout, and Observer mode are enforced at the MCP Server level, applying to all agent types. Confirm mode and Max Iterations are fully enforced for the built-in agent; ACP agents may have their own internal controls for these settings.',
 };
 
 export default en;

application/i18n/locales/zh-CN.ts

@@ -5,6 +5,9 @@ const zhCN: Messages = {
   'common.save': '保存',
   'common.cancel': '取消',
   'common.close': '关闭',
+  'common.reset': '重置',
+  'common.zoomIn': '放大',
+  'common.zoomOut': '缩小',
   'common.settings': '设置',
   'common.search': '搜索',
   'common.connect': '连接',
@@ -20,6 +23,7 @@ const zhCN: Messages = {
   'common.back': '返回',
   'common.apply': '应用',
   'common.use': '使用',
+  'common.useGlobal': '跟随全局',
   'common.left': '左侧',
   'common.right': '右侧',
   'common.more': '更多',
@@ -37,6 +41,7 @@ const zhCN: Messages = {
   // Dialogs / prompts
   'confirm.deleteHost': '删除主机 "{name}"？',
   'confirm.deleteIdentity': '删除身份 "{name}"？',
+  'confirm.removeProvider': '移除提供商 "{name}"？',
   'dialog.renameWorkspace.title': '重命名工作区',
   'dialog.renameSession.title': '重命名会话',
   'field.name': '名称',
@@ -78,6 +83,21 @@ const zhCN: Messages = {
   'settings.system.credentials.unavailableHint': '在其他用户或机器上加密的凭据无法在此处解密。请在当前设备重新输入并保存凭据。',
   'settings.system.credentials.portabilityHint': '云同步可跨设备，因为使用主密钥加密；本地 safeStorage 加密仅绑定当前系统用户/设备。',
 
+  // Settings > System > Crash Logs
+  'settings.system.crashLogs.title': '崩溃日志',
+  'settings.system.crashLogs.description': '查看主进程错误日志，帮助诊断异常行为。',
+  'settings.system.crashLogs.noLogs': '未找到崩溃日志。',
+  'settings.system.crashLogs.entries': '{count} 条记录',
+  'settings.system.crashLogs.clear': '清除所有日志',
+  'settings.system.crashLogs.cleared': '已清除 {count} 个日志文件。',
+  'settings.system.crashLogs.source': '来源',
+  'settings.system.crashLogs.time': '时间',
+  'settings.system.crashLogs.message': '消息',
+  'settings.system.crashLogs.stack': '堆栈跟踪',
+  'settings.system.crashLogs.hint': '崩溃日志保留 30 天，超期自动清理。',
+  'settings.system.crashLogs.collapse': '收起',
+  'settings.system.crashLogs.expand': '查看详情',
+
   // Settings > System > Software Update
   'settings.update.title': '软件更新',
   'settings.update.currentVersion': '当前版本',
@@ -98,6 +118,8 @@ const zhCN: Messages = {
   'settings.update.lastCheckedMinutesAgo': '{n} 分钟前',
   'settings.update.lastCheckedHoursAgo': '{n} 小时前',
   'settings.update.lastCheckedPrefix': '上次检查：',
+  'settings.update.autoUpdateEnabled': '自动更新',
+  'settings.update.autoUpdateEnabledDesc': '有新版本时自动检查并下载更新。',
 
   // Settings > Session Logs
   'settings.sessionLogs.title': '会话日志',
@@ -125,6 +147,8 @@ const zhCN: Messages = {
   'settings.globalHotkey.reset': '恢复默认',
   'settings.globalHotkey.closeToTray': '关闭时最小化到托盘',
   'settings.globalHotkey.closeToTrayDesc': '启用后，关闭窗口将最小化到系统托盘而不是退出程序。',
+  'settings.globalHotkey.enabled': '启用全局快捷键',
+  'settings.globalHotkey.enabledDesc': '注册系统级键盘快捷键。禁用后将取消所有全局快捷键注册。',
   'settings.globalHotkey.hint': '全局快捷键在系统范围内工作，可快速显示或隐藏窗口（下拉式终端风格）。',
 
   // Tray Panel
@@ -191,6 +215,9 @@ const zhCN: Messages = {
   'settings.appearance.themeColor.desc': '为浅色与深色主题选择预设配色',
   'settings.appearance.themeColor.light': '浅色主题',
   'settings.appearance.themeColor.dark': '深色主题',
+  'settings.appearance.immersiveMode': '沉浸模式',
+  'settings.appearance.immersiveMode.desc':
+    '启用后，UI 外观（标签栏、侧边栏、状态栏）会自动适配当前终端主题的配色，营造视觉一体化的沉浸体验。',
   'settings.appearance.customCss': '自定义 CSS',
   'settings.appearance.customCss.desc': '使用自定义 CSS 个性化界面，修改会立即生效。',
   'settings.appearance.customCss.placeholder':
@@ -401,6 +428,8 @@ const zhCN: Messages = {
   'sftp.filter.placeholder': '按文件名筛选...',
   'sftp.bookmark.add': '收藏此路径',
   'sftp.bookmark.remove': '取消收藏',
+  'sftp.bookmark.addGlobal': '+全局',
+  'sftp.bookmark.addGlobalTooltip': '保存为全局收藏（所有主机共享）',
   'sftp.bookmark.empty': '暂无收藏路径',
   'sftp.columns.name': '名称',
   'sftp.columns.modified': '修改时间',
@@ -431,12 +460,14 @@ const zhCN: Messages = {
   'sftp.path.doubleClickToEdit': '双击编辑路径',
   'sftp.showHiddenPaths': '隐藏的路径',
   'sftp.task.waiting': '等待中...',
+  'sftp.transfer.preparing': '准备中...',
   'sftp.status.loading': '加载中...',
   'sftp.status.uploading': '上传中...',
   'sftp.status.ready': '就绪',
   'sftp.transfers': '传输',
   'sftp.transfers.active': '{count} 个进行中',
   'sftp.transfers.clearCompleted': '清除已完成',
+  'sftp.transfers.calculatingTotal': '正在统计总大小...',
   'sftp.goUp': '上一级',
   'sftp.goToTerminalCwd': '定位到终端当前目录',
   'sftp.encoding.label': '文件名编码',
@@ -526,6 +557,29 @@ const zhCN: Messages = {
   'hostDetails.section.credentials': '凭据',
   'hostDetails.section.portCredentials': '端口与凭据',
   'hostDetails.section.appearance': '外观',
+  'hostDetails.distro.title': 'Linux 发行版',
+  'hostDetails.distro.desc': '可在连接后自动探测，也可以手动覆盖图标所用的发行版。',
+  'hostDetails.distro.mode': '来源',
+  'hostDetails.distro.mode.auto': '自动探测',
+  'hostDetails.distro.mode.manual': '手动覆盖',
+  'hostDetails.distro.detectedLabel': '当前值',
+  'hostDetails.distro.manualLabel': '手动指定',
+  'hostDetails.distro.pending': '首次连接后自动探测',
+  'hostDetails.distro.unknown': '未知',
+  'hostDetails.distro.option.linux': '通用 Linux',
+  'hostDetails.distro.option.ubuntu': 'Ubuntu',
+  'hostDetails.distro.option.debian': 'Debian',
+  'hostDetails.distro.option.centos': 'CentOS',
+  'hostDetails.distro.option.rocky': 'Rocky Linux',
+  'hostDetails.distro.option.fedora': 'Fedora',
+  'hostDetails.distro.option.arch': 'Arch Linux',
+  'hostDetails.distro.option.alpine': 'Alpine',
+  'hostDetails.distro.option.amazon': 'Amazon Linux',
+  'hostDetails.distro.option.opensuse': 'openSUSE / SLES',
+  'hostDetails.distro.option.redhat': 'Red Hat / RHEL',
+  'hostDetails.distro.option.almalinux': 'AlmaLinux',
+  'hostDetails.distro.option.oracle': 'Oracle Linux',
+  'hostDetails.distro.option.kali': 'Kali Linux',
   'hostDetails.section.mosh': 'Mosh',
   'hostDetails.username.placeholder': '用户名',
   'hostDetails.password.placeholder': '密码',
@@ -534,9 +588,12 @@ const zhCN: Messages = {
   'hostDetails.password.save': '保存密码',
   'hostDetails.identity.suggestions': '身份',
   'hostDetails.identity.missing': '身份不存在',
-  'hostDetails.credential.keyCertificate': '密钥 / 证书',
+  'hostDetails.credential.keyCertificate': '密钥 / 证书 / 本地密钥',
   'hostDetails.credential.key': '密钥',
   'hostDetails.credential.certificate': '证书',
+  'hostDetails.credential.localKeyFile': '本地密钥文件',
+  'hostDetails.credential.localKeyFilePlaceholder': '~/.ssh/id_ed25519',
+  'hostDetails.credential.browseKeyFile': '浏览…',
   'hostDetails.credential.missing': '凭据不存在',
   'hostDetails.keys.search': '搜索密钥…',
   'hostDetails.keys.empty': '暂无密钥',
@@ -544,9 +601,13 @@ const zhCN: Messages = {
   'hostDetails.certs.empty': '暂无证书',
   'hostDetails.agentForwarding': '转发 SSH 密钥',
   'hostDetails.agentForwarding.desc': '允许远程服务器使用本地 SSH 密钥（例如用于 git 操作）',
-  'hostDetails.agentForwarding.agentNotRunning': 'SSH Agent 未运行',
-  'hostDetails.agentForwarding.agentNotRunningHint': '请在 Windows 服务管理器 (services.msc) 中启用 OpenSSH Authentication Agent 服务。',
+  'hostDetails.agentForwarding.agentNotRunning': 'SSH Agent 不可用',
+  'hostDetails.agentForwarding.agentNotRunningHint': '未检测到 SSH Agent。请启用 Windows OpenSSH Authentication Agent 服务，或使用兼容的 Agent（如 Bitwarden、1Password、gpg-agent）。',
   'hostDetails.section.agentForwarding': 'SSH 代理',
+  'hostDetails.section.deviceType': '设备类型',
+  'hostDetails.deviceType': '网络设备模式',
+  'hostDetails.deviceType.desc': '适用于通过 SSH 连接的网络设备（交换机、路由器、防火墙）。命令将原样发送，不进行 Shell 包装，兼容华为 VRP、Cisco IOS 等厂商 CLI。',
+  'hostDetails.deviceType.warning': 'AI 代理命令将直接发送，无法获取退出码。仅建议在设备不运行标准 Shell 时启用。',
   'hostDetails.section.legacyAlgorithms': '旧版算法',
   'hostDetails.legacyAlgorithms': '允许旧版算法',
   'hostDetails.legacyAlgorithms.desc': '启用已弃用的 SSH 算法（diffie-hellman-group1、ssh-dss、3des-cbc 等）以连接老旧网络设备。',
@@ -714,6 +775,7 @@ const zhCN: Messages = {
   'terminal.progress.disconnected': '已断开',
   'terminal.progress.cancelling': '正在取消...',
   'terminal.progress.startOver': '重新开始',
+  'terminal.connection.dismissDisconnectedDialog': '关闭断连提示',
   'terminal.connection.chainOf': 'Chain {current} / {total}',
   'terminal.connection.showLogs': '显示日志',
   'terminal.connection.hideLogs': '隐藏日志',
@@ -726,6 +788,8 @@ const zhCN: Messages = {
   'terminal.themeModal.tab.theme': '主题',
   'terminal.themeModal.tab.font': '字体',
   'terminal.themeModal.tab.custom': '自定义',
+  'terminal.themeModal.globalTheme': '全局主题',
+  'terminal.themeModal.globalFont': '全局字体',
   'terminal.themeModal.fontSize': '字体大小',
   'terminal.themeModal.livePreview': '实时预览',
   'terminal.themeModal.themeType': '{type} 主题',
@@ -998,6 +1062,7 @@ const zhCN: Messages = {
   'sftp.upload.phase.compressed': '压缩传输',
 
   // SFTP File Opener
+  'sftp.context.copyPath': '复制文件路径',
   'sftp.context.openWith': '打开方式...',
   'sftp.context.edit': '编辑',
   'sftp.context.preview': '预览',
@@ -1055,6 +1120,13 @@ const zhCN: Messages = {
   'settings.sftp.autoSync.desc': '使用外部应用程序打开文件时，自动将文件更改同步回远程服务器',
   'settings.sftp.autoSync.enable': '启用自动同步',
   'settings.sftp.autoSync.enableDesc': '在外部应用程序中保存文件时，更改将自动上传到远程服务器',
+
+  // Settings > SFTP 自动打开侧栏
+  'settings.sftp.autoOpenSidebar': '连接时自动打开侧栏',
+  'settings.sftp.autoOpenSidebar.desc': '连接到主机时自动打开 SFTP 文件浏览器侧栏',
+  'settings.sftp.autoOpenSidebar.enable': '启用自动打开侧栏',
+  'settings.sftp.autoOpenSidebar.enableDesc': '当终端会话连接到远程主机时，SFTP 侧栏将自动打开',
+
   'sftp.autoSync.success': '文件已同步到远程：{fileName}',
   'sftp.autoSync.error': '同步文件失败：{error}',
 
@@ -1141,6 +1213,17 @@ const zhCN: Messages = {
   'settings.terminal.behavior.bracketedPaste': '括号粘贴模式',
   'settings.terminal.behavior.bracketedPaste.desc':
     '粘贴文本时使用转义序列包裹，以便终端区分粘贴和键入。如果出现 ^[[200~ 字样请关闭此选项。',
+  'settings.terminal.behavior.osc52Clipboard': 'OSC-52 剪贴板',
+  'settings.terminal.behavior.osc52Clipboard.desc':
+    '允许远程程序（tmux、vim 等）通过 OSC-52 转义序列访问本地剪贴板。',
+  'settings.terminal.behavior.osc52Clipboard.off': '关闭',
+  'settings.terminal.behavior.osc52Clipboard.writeOnly': '仅写入',
+  'settings.terminal.behavior.osc52Clipboard.readWrite': '读写',
+  'settings.terminal.behavior.osc52Clipboard.prompt': '写入 + 读取时询问',
+  'terminal.osc52.readPrompt.title': '剪贴板读取请求',
+  'terminal.osc52.readPrompt.desc': '远程程序正在请求读取您的剪贴板，是否允许？',
+  'terminal.osc52.readPrompt.allow': '允许',
+  'terminal.osc52.readPrompt.deny': '拒绝',
   'settings.terminal.behavior.scrollOnInput': '输入时自动滚动',
   'settings.terminal.behavior.scrollOnInput.desc': '输入时将终端滚动到底部',
   'settings.terminal.behavior.scrollOnOutput': '输出时自动滚动',
@@ -1149,6 +1232,8 @@ const zhCN: Messages = {
   'settings.terminal.behavior.scrollOnKeyPress.desc': '按键（例如 Enter）时将终端滚动到底部',
   'settings.terminal.behavior.scrollOnPaste': '粘贴时自动滚动',
   'settings.terminal.behavior.scrollOnPaste.desc': '粘贴文本时将终端滚动到底部',
+  'settings.terminal.behavior.smoothScrolling': '平滑滚动',
+  'settings.terminal.behavior.smoothScrolling.desc': '滚动终端视口时使用平滑动画',
   'settings.terminal.behavior.linkModifier': '链接修饰键',
   'settings.terminal.behavior.linkModifier.desc': '按住此键再点击终端中的链接',
   'settings.terminal.behavior.linkModifier.none': '无（直接点击）',
@@ -1187,6 +1272,15 @@ const zhCN: Messages = {
   'settings.terminal.rendering.renderer.desc': '选择终端渲染技术。自动模式会在低内存设备上使用 Canvas。更改将在新终端会话中生效。',
   'settings.terminal.rendering.auto': '自动',
 
+  // Settings > Terminal > Autocomplete
+  'settings.terminal.section.autocomplete': '自动补全',
+  'settings.terminal.autocomplete.enabled': '启用自动补全',
+  'settings.terminal.autocomplete.enabled.desc': '输入时根据历史命令和命令规范显示补全建议。',
+  'settings.terminal.autocomplete.ghostText': '行内建议',
+  'settings.terminal.autocomplete.ghostText.desc': '在光标后显示灰色的建议文本（类似 fish shell）。',
+  'settings.terminal.autocomplete.popupMenu': '弹出菜单',
+  'settings.terminal.autocomplete.popupMenu.desc': '显示包含多个建议的浮动列表。',
+
   // Settings > Shortcuts
   'settings.shortcuts.section.scheme': '快捷键方案',
   'settings.shortcuts.scheme.label': '键盘快捷键',
@@ -1417,6 +1511,7 @@ const zhCN: Messages = {
   'snippets.renameDialog.error.duplicate': '已存在同名的代码包',
   'snippets.renameDialog.error.invalidChars': '代码包名称只能包含字母、数字、连字符和下划线',
 
+  'snippets.field.noAutoRun': '仅粘贴（不自动执行）',
   // Snippet Shortkey
   'snippets.field.shortkey': '快捷键',
   'snippets.shortkey.placeholder': '点击设置快捷键',
@@ -1456,6 +1551,7 @@ const zhCN: Messages = {
   'serial.field.localEchoDesc': '本地回显输入字符（用于没有远程回显的设备）',
   'serial.field.lineMode': '行模式',
   'serial.field.lineModeDesc': '缓冲输入，按回车后发送（而不是逐字符发送）',
+  'serial.field.charset': '字符编码',
   'serial.connectionError': '连接串口失败',
   'serial.field.baudRatePlaceholder': '选择或输入波特率...',
   'serial.field.baudRateEmpty': '输入自定义波特率',
@@ -1493,6 +1589,167 @@ const zhCN: Messages = {
 
   // Text Editor
   'sftp.editor.wordWrap': '自动换行',
+
+  // AI Settings
+  'ai.agentSettings': 'Agent 设置',
+  'ai.title': 'AI',
+  'ai.description': '配置 AI 提供商、Agent 和安全设置',
+  'ai.providers': '提供商',
+  'ai.providers.empty': '尚未配置提供商。添加一个提供商以开始使用。',
+  'ai.providers.add': '添加提供商',
+  'ai.providers.active': '活跃',
+  'ai.providers.apiKeyConfigured': 'API Key 已配置',
+  'ai.providers.noApiKey': '未设置 API Key',
+  'ai.providers.configure': '配置',
+  'ai.providers.remove': '移除',
+  'ai.providers.name': '显示名称',
+  'ai.providers.name.placeholder': '例如 我的提供商',
+  'ai.providers.apiKey': 'API Key',
+  'ai.providers.apiKey.placeholder': '输入 API Key',
+  'ai.providers.apiKey.decrypting': '解密中...',
+  'ai.providers.baseUrl': 'Base URL',
+  'ai.providers.skipTLSVerify': '跳过 TLS 证书验证（用于自签名证书）',
+  'ai.providers.defaultModel': '默认模型',
+  'ai.providers.defaultModel.placeholder': '例如 gpt-4o, claude-sonnet-4-20250514',
+  'ai.providers.refreshModels': '刷新模型列表',
+  'ai.providers.searchModel': '搜索或输入模型 ID...',
+  'ai.providers.filterModels': '筛选模型...',
+  'ai.providers.loadingModels': '加载模型中...',
+  'ai.providers.noMatchingModels': '没有匹配的模型',
+  'ai.providers.clickToLoadModels': '点击加载模型',
+  'ai.providers.showingModels': '显示前 100 个，共 {count} 个模型。输入以筛选。',
+  'ai.providers.advancedParams': '高级参数',
+  'ai.providers.advancedParams.hint': '留空则使用提供商默认值。',
+  'ai.providers.advancedParams.maxTokens.placeholder': '例如 4096',
+  'ai.providers.advancedParams.default': '提供商默认',
+
+  // AI Codex
+  'ai.codex': 'Codex',
+  'ai.codex.title': 'Codex CLI',
+  'ai.codex.description': '使用 codex + codex-acp 进行 ACP 协议流式传输。在此通过 ChatGPT 订阅登录，或配置 OpenAI 提供商的 API Key（将作为 CODEX_API_KEY 传递）。',
+  'ai.codex.detecting': '检测中...',
+  'ai.codex.notFound': '未找到',
+  'ai.codex.awaitingLogin': '等待登录',
+  'ai.codex.connectedChatGPT': '已通过 ChatGPT 连接',
+  'ai.codex.connectedApiKey': '已通过 API Key 连接',
+  'ai.codex.notConnected': '未连接',
+  'ai.codex.statusUnknown': '状态未知',
+  'ai.codex.path': '路径：',
+  'ai.codex.notFoundHint': '在 PATH 中未找到 codex。请安装或在下方指定可执行文件路径。',
+  'ai.codex.customPathPlaceholder': '例如 /usr/local/bin/codex',
+  'ai.codex.check': '检查',
+  'ai.codex.openLogin': '打开登录',
+  'ai.codex.logout': '退出登录',
+  'ai.codex.connectChatGPT': '连接 ChatGPT',
+  'ai.codex.refreshStatus': '刷新状态',
+  'ai.codex.apiKeyHint': '检测到已启用的 OpenAI 提供商 API Key。Codex ACP 也可以无需 ChatGPT 登录进行认证。',
+
+  // AI Claude Code
+  'ai.claude.title': 'Claude Code',
+  'ai.claude.description': 'Anthropic 的智能编程助手。使用 claude-agent-acp 进行 ACP 协议流式传输。',
+  'ai.claude.detecting': '检测中...',
+  'ai.claude.detected': '已检测到',
+  'ai.claude.notFound': '未找到',
+  'ai.claude.path': '路径：',
+  'ai.claude.notFoundHint': '在 PATH 中未找到 claude。请安装或在下方指定可执行文件路径。',
+  'ai.claude.customPathPlaceholder': '例如 /usr/local/bin/claude',
+  'ai.claude.check': '检查',
+
+  // AI Default Agent
+  'ai.defaultAgent': '默认 Agent',
+  'ai.defaultAgent.description': '创建新 AI 会话时使用的 Agent',
+  'ai.defaultAgent.catty': 'Catty（内置）',
+
+  // AI Chat
+  'ai.chat.noProvider': '尚未配置 AI 提供商。请前往 **设置 → AI → 提供商** 添加并启用一个提供商。',
+  'ai.chat.toolDenied': '操作已被用户拒绝。',
+  'ai.chat.toolApproved': '已批准',
+  'ai.chat.toolApprovalHint': '按回车批准，按 Esc 拒绝',
+  'ai.chat.approve': '批准',
+  'ai.chat.reject': '拒绝',
+  'ai.chat.toolLabel': '工具',
+  'ai.chat.targetLabel': '目标',
+  'ai.chat.permissionRequired': '需要权限',
+  'ai.chat.permissionDescription': 'AI Agent 希望执行一个需要你批准的工具调用。',
+  'ai.chat.commandBlocked': '此命令已被安全策略拦截，无法执行。',
+  'ai.chat.recommendAllow': '允许',
+  'ai.chat.recommendConfirm': '确认',
+  'ai.chat.recommendDeny': '拒绝',
+  'ai.chat.exportConversation': '导出对话',
+  'ai.chat.exportAs': '导出为',
+  'ai.chat.exportMarkdown': 'Markdown',
+  'ai.chat.exportJSON': 'JSON',
+  'ai.chat.exportPlainText': '纯文本',
+  'ai.chat.thinking': '思考中',
+  'ai.chat.thoughtFor': '思考了 {duration}',
+  'ai.chat.thought': '思考',
+  'ai.chat.agents': 'Agents',
+  'ai.chat.detectedOnMachine': '在本机检测到',
+  'ai.chat.rescan': '重新扫描',
+  'ai.chat.permObserver': '观察',
+  'ai.chat.permConfirm': '确认',
+  'ai.chat.permAuto': '自主',
+  'ai.chat.permObserverDesc': '只读模式',
+  'ai.chat.permConfirmDesc': '操作前询问',
+  'ai.chat.permAutoDesc': '自由执行',
+  'ai.chat.emptyHint': '询问服务器相关问题、执行命令或获取配置帮助。',
+  'ai.chat.placeholder': '向 {agent} 发送消息 — @ 引用上下文，/ 使用命令',
+  'ai.chat.placeholderDefault': '向 Catty Agent 发送消息...',
+  'ai.chat.noModel': '未选择模型',
+  'ai.chat.recent': '最近',
+  'ai.chat.viewAll': '查看全部',
+  'ai.chat.untitled': '无标题',
+  'ai.chat.justNow': '刚刚',
+  'ai.chat.minutesAgo': '{n}分钟前',
+  'ai.chat.hoursAgo': '{n}小时前',
+  'ai.chat.daysAgo': '{n}天前',
+  'ai.chat.newChat': '新对话',
+  'ai.chat.allSessions': '所有会话',
+  'ai.chat.noSessions': '没有历史会话',
+  'ai.chat.retryHint': '你可以重新发送消息来重试。',
+  'ai.chat.approvalTimeout': '工具审批已超时（5 分钟）。你可以重新发送消息来重试。',
+  'ai.chat.menuHosts': '主机',
+  'ai.chat.menuContext': '上下文',
+  'ai.chat.menuFiles': '文件',
+  'ai.chat.menuImage': '图片',
+  'ai.chat.menuMentionHost': '提及主机',
+
+  // AI Error
+  'ai.codex.bridgeError': 'Codex 主进程处理器尚未加载。请完全重启 Netcatty 或重启 Electron 开发进程，然后重试。',
+
+  // AI Web Search
+  'ai.webSearch.title': '网络搜索',
+  'ai.webSearch.enable': '启用网络搜索',
+  'ai.webSearch.enable.description': '允许 AI 代理搜索互联网获取最新信息。',
+  'ai.webSearch.provider': '搜索供应商',
+  'ai.webSearch.provider.description': '选择一个网络搜索 API 供应商。',
+  'ai.webSearch.apiKey': 'API 密钥',
+  'ai.webSearch.apiKey.description': '所选搜索供应商的 API 密钥。',
+  'ai.webSearch.apiKey.placeholder': '输入 API 密钥...',
+  'ai.webSearch.apiHost': 'API 地址',
+  'ai.webSearch.apiHost.description': '自定义 API 端点。除非使用代理，否则保持默认值。',
+  'ai.webSearch.apiHost.searxngDescription': 'SearXNG 实例的 URL（必填）。',
+  'ai.webSearch.maxResults': '最大结果数',
+  'ai.webSearch.maxResults.description': '搜索返回的最大结果数（1-20）。',
+
+  // AI Safety Settings
+  'ai.safety.title': '安全',
+  'ai.safety.permissionMode': '权限模式',
+  'ai.safety.permissionMode.description': '控制 AI 与终端的交互方式。观察者模式通过 MCP Server 阻止所有写操作，对内置和 ACP Agent 均生效。确认模式对 ACP Agent 仅为建议性（ACP Agent 有自己的工具审批流程）。',
+  'ai.safety.permissionMode.observer': '观察者 - 只读，禁止操作',
+  'ai.safety.permissionMode.confirm': '确认 - 操作前询问',
+  'ai.safety.permissionMode.autonomous': '自主 - 自由执行',
+  'ai.safety.commandTimeout': '命令超时',
+  'ai.safety.commandTimeout.description': '命令执行的最大秒数，超时将被终止。对内置和 ACP Agent 均生效。',
+  'ai.safety.commandTimeout.unit': '秒',
+  'ai.safety.maxIterations': '最大迭代次数',
+  'ai.safety.maxIterations.description': '防止 AI 失控执行的最大工具调用循环次数。ACP Agent 可能有自己的内部迭代限制，以其为准。',
+  'ai.safety.blocklist': '命令黑名单',
+  'ai.safety.blocklist.description': '用于拦截危险命令的正则表达式。通过 MCP Server 对内置和 ACP Agent 均生效。',
+  'ai.safety.blocklist.placeholder': '正则表达式...',
+  'ai.safety.blocklist.reset': '恢复默认',
+  'ai.safety.blocklist.add': '添加规则',
+  'ai.safety.note': '命令黑名单、命令超时和观察者模式通过 MCP Server 层强制执行，对所有 Agent 类型生效。确认模式和最大迭代次数对内置 Agent 完全强制执行；ACP Agent 可能有自己的内部控制。',
 };
 
 export default zhCN;

application/notification.ts

@@ -0,0 +1,38 @@
+/**
+ * Application-layer notification port.
+ *
+ * UI layers (e.g. toast) register their implementation via `setNotify`.
+ * Application code calls `notify.*` without importing any UI module.
+ */
+
+export interface NotifyOptions {
+  title?: string;
+  duration?: number;
+  onClick?: () => void;
+  actionLabel?: string;
+}
+
+type NotifyFn = (message: string, titleOrOptions?: string | NotifyOptions) => void;
+
+interface Notify {
+  success: NotifyFn;
+  error: NotifyFn;
+  warning: NotifyFn;
+  info: NotifyFn;
+}
+
+const noop: NotifyFn = () => {};
+
+let _impl: Notify = { success: noop, error: noop, warning: noop, info: noop };
+
+/** Called once by the UI layer to wire up the real implementation. */
+export function setNotify(impl: Notify): void {
+  _impl = impl;
+}
+
+export const notify: Notify = {
+  success: (...args) => _impl.success(...args),
+  error: (...args) => _impl.error(...args),
+  warning: (...args) => _impl.warning(...args),
+  info: (...args) => _impl.info(...args),
+};

application/state/activeTabStore.ts

@@ -6,6 +6,7 @@ type Listener = () => void;
 class ActiveTabStore {
   private activeTabId: string = 'vault';
   private listeners = new Set<Listener>();
+  private pendingNotify = false;
 
   getActiveTabId = () => this.activeTabId;
 
@@ -13,7 +14,10 @@ class ActiveTabStore {
     if (this.activeTabId !== id) {
       this.activeTabId = id;
       // Defer listener notification to avoid "setState during render" if called from a render phase
+      if (this.pendingNotify) return;
+      this.pendingNotify = true;
       Promise.resolve().then(() => {
+        this.pendingNotify = false;
         this.listeners.forEach(listener => listener());
       });
     }

application/state/customThemeStore.ts

@@ -30,7 +30,8 @@ class CustomThemeStore {
         this.setupCrossWindowSync();
     }
 
-    private loadFromStorage = () => {
+    /** Reload themes from localStorage. Called internally and after sync apply. */
+    loadFromStorage = () => {
         try {
             const parsed = localStorageAdapter.read<TerminalTheme[]>(STORAGE_KEY_CUSTOM_THEMES);
             if (Array.isArray(parsed)) {
@@ -39,7 +40,7 @@ class CustomThemeStore {
         } catch {
             // ignore corrupt data
         }
-        this.cachedAllThemes = null; // invalidate cache
+        this.notify();
     };
 
     private saveToStorage = () => {

application/state/sessionActivity.ts

@@ -0,0 +1,46 @@
+import { TerminalSession } from '../../types';
+
+type SessionActivityMap = Record<string, boolean>;
+
+export const getValidSessionActivityIds = (sessions: TerminalSession[]): Set<string> => {
+  return new Set(sessions.map((session) => session.id));
+};
+
+export const shouldMarkSessionActivity = (
+  activeTabId: string | null,
+  session: Pick<TerminalSession, 'id' | 'workspaceId'>,
+): boolean => {
+  return activeTabId !== session.id && activeTabId !== session.workspaceId;
+};
+
+export const getSessionActivityIdsToClear = (
+  activeTabId: string | null,
+  sessions: TerminalSession[],
+): string[] => {
+  if (!activeTabId || activeTabId === 'vault' || activeTabId === 'sftp') {
+    return [];
+  }
+
+  const activeSession = sessions.find((session) => session.id === activeTabId);
+  if (activeSession) {
+    return [activeSession.id];
+  }
+
+  return sessions
+    .filter((session) => session.workspaceId === activeTabId)
+    .map((session) => session.id);
+};
+
+export const buildWorkspaceActivityMap = (
+  sessions: TerminalSession[],
+  sessionActivityMap: SessionActivityMap,
+): Map<string, boolean> => {
+  const workspaceActivityMap = new Map<string, boolean>();
+
+  for (const session of sessions) {
+    if (!session.workspaceId || !sessionActivityMap[session.id]) continue;
+    workspaceActivityMap.set(session.workspaceId, true);
+  }
+
+  return workspaceActivityMap;
+};

application/state/sessionActivityStore.ts

@@ -0,0 +1,78 @@
+import { useSyncExternalStore } from 'react';
+
+type Listener = () => void;
+
+class SessionActivityStore {
+  private snapshot: Record<string, boolean> = {};
+  private listeners = new Set<Listener>();
+
+  getSnapshot = () => this.snapshot;
+
+  subscribe = (listener: Listener) => {
+    this.listeners.add(listener);
+    return () => this.listeners.delete(listener);
+  };
+
+  private emit() {
+    this.listeners.forEach((listener) => listener());
+  }
+
+  setTabActive = (tabId: string, hasActivity: boolean) => {
+    const alreadyActive = !!this.snapshot[tabId];
+    if (alreadyActive === hasActivity) return;
+
+    if (hasActivity) {
+      this.snapshot = { ...this.snapshot, [tabId]: true };
+    } else {
+      const { [tabId]: _removed, ...rest } = this.snapshot;
+      this.snapshot = rest;
+    }
+
+    this.emit();
+  };
+
+  clearTab = (tabId: string) => {
+    this.setTabActive(tabId, false);
+  };
+
+  clearTabs = (tabIds: Iterable<string>) => {
+    let changed = false;
+    const next = { ...this.snapshot };
+
+    for (const tabId of tabIds) {
+      if (!next[tabId]) continue;
+      delete next[tabId];
+      changed = true;
+    }
+
+    if (!changed) return;
+    this.snapshot = next;
+    this.emit();
+  };
+
+  prune = (validTabIds: Set<string>) => {
+    let changed = false;
+    const next: Record<string, boolean> = {};
+
+    for (const tabId of Object.keys(this.snapshot)) {
+      if (validTabIds.has(tabId)) {
+        next[tabId] = true;
+      } else {
+        changed = true;
+      }
+    }
+
+    if (!changed) return;
+    this.snapshot = next;
+    this.emit();
+  };
+}
+
+export const sessionActivityStore = new SessionActivityStore();
+
+export const useSessionActivityMap = () => {
+  return useSyncExternalStore(
+    sessionActivityStore.subscribe,
+    sessionActivityStore.getSnapshot,
+  );
+};

application/state/sftp/types.ts

@@ -7,6 +7,7 @@ export interface SftpPane {
   loading: boolean;
   reconnecting: boolean;
   error: string | null;
+  connectionLogs: string[];
   selectedFiles: Set<string>;
   filter: string;
   filenameEncoding: SftpFilenameEncoding;
@@ -33,6 +34,7 @@ export const createEmptyPane = (
   loading: false,
   reconnecting: false,
   error: null,
+  connectionLogs: [],
   selectedFiles: new Set(),
   filter: "",
   filenameEncoding: "auto",

application/state/sftp/useSftpConnections.ts

@@ -34,7 +34,7 @@ interface UseSftpConnectionsParams {
 }
 
 interface UseSftpConnectionsResult {
-  connect: (side: "left" | "right", host: Host | "local", options?: { forceNewTab?: boolean }) => Promise<void>;
+  connect: (side: "left" | "right", host: Host | "local", options?: { forceNewTab?: boolean; onTabCreated?: (tabId: string) => void }) => Promise<void>;
   disconnect: (side: "left" | "right") => Promise<void>;
   listLocalFiles: (path: string) => Promise<SftpFileEntry[]>;
   listRemoteFiles: (sftpId: string, path: string, encoding?: SftpFilenameEncoding) => Promise<SftpFileEntry[]>;
@@ -69,7 +69,7 @@ export const useSftpConnections = ({
   const { listLocalFiles, listRemoteFiles } = useSftpDirectoryListing();
 
   const connect = useCallback(
-    async (side: "left" | "right", host: Host | "local", options?: { forceNewTab?: boolean }) => {
+    async (side: "left" | "right", host: Host | "local", options?: { forceNewTab?: boolean; onTabCreated?: (tabId: string) => void }) => {
       const setTabs = side === "left" ? setLeftTabs : setRightTabs;
 
       let activeTabId: string | null = null;
@@ -88,6 +88,11 @@ export const useSftpConnections = ({
 
       if (!activeTabId) return;
 
+      // Notify caller of the tab ID synchronously, before any async work.
+      // This allows callers to map metadata (e.g. connection keys) to the tab
+      // immediately, avoiding race conditions with deferred effects.
+      options?.onTabCreated?.(activeTabId);
+
       const connectionId = `${side}-${Date.now()}`;
 
       navSeqRef.current[side] += 1;
@@ -118,12 +123,15 @@ export const useSftpConnections = ({
         if (currentPane?.connection && !currentPane.connection.isLocal) {
           const oldSftpId = sftpSessionsRef.current.get(currentPane.connection.id);
           if (oldSftpId) {
+            // Delete the mapping BEFORE the async closeSftp call to prevent
+            // concurrent code from using a stale sftpId that the backend may
+            // have already removed during the await.
+            sftpSessionsRef.current.delete(currentPane.connection.id);
             try {
               await netcattyBridge.get()?.closeSftp(oldSftpId);
             } catch {
               // Ignore errors when closing stale SFTP sessions
             }
-            sftpSessionsRef.current.delete(currentPane.connection.id);
           }
         }
       }
@@ -151,6 +159,7 @@ export const useSftpConnections = ({
           loading: true,
           reconnecting: false,
           error: null,
+          connectionLogs: [],
           filenameEncoding, // Reset encoding for new connection
         }));
 
@@ -205,13 +214,57 @@ export const useSftpConnections = ({
           loading: true,
           reconnecting: prev.reconnecting,
           error: null,
+          connectionLogs: [],
           files: prev.reconnecting ? prev.files : (sharedHostCache?.files ?? []),
           filenameEncoding, // Reset encoding for new connection
         }));
 
+        // Subscribe to SFTP connection progress events for auth logging
+        const sftpSessionId = `sftp-${connectionId}`;
+        let unsubSftpProgress: (() => void) | undefined;
+        const bridge = netcattyBridge.get();
+        if (bridge?.onSftpConnectionProgress) {
+          unsubSftpProgress = bridge.onSftpConnectionProgress((sid, label, status, detail) => {
+            if (sid !== sftpSessionId) return;
+            let logLine: string;
+            switch (status) {
+              case 'connecting':
+                logLine = `Connecting to ${label}...`;
+                break;
+              case 'authenticating':
+                logLine = `${label} - Key exchange complete`;
+                break;
+              case 'auth-attempt':
+                if (detail?.endsWith('rejected')) {
+                  logLine = `${label} - ✗ ${detail}`;
+                } else if (detail === 'all methods exhausted') {
+                  logLine = `${label} - ✗ All authentication methods exhausted`;
+                } else if (detail === 'waiting for user input...' || detail === 'user responded') {
+                  logLine = `${label} - ${detail}`;
+                } else {
+                  logLine = `${label} - Trying ${detail}...`;
+                }
+                break;
+              case 'connected':
+                logLine = `${label} - Connected`;
+                break;
+              case 'error':
+                logLine = `${label} - Error${detail ? `: ${detail}` : ''}`;
+                break;
+              default:
+                logLine = `${label} - ${status}${detail ? `: ${detail}` : ''}`;
+            }
+            // Only update if this is still the active request (avoids stale logs leaking)
+            if (navSeqRef.current[side] !== connectRequestId) return;
+            updateTab(side, activeTabId, (prev) => ({
+              ...prev,
+              connectionLogs: [...prev.connectionLogs, logLine],
+            }));
+          });
+        }
+
         try {
           const credentials = getHostCredentials(host);
-          const bridge = netcattyBridge.get();
           const openSftp = bridge?.openSftp;
           if (!openSftp) throw new Error("SFTP bridge unavailable");
 
@@ -270,8 +323,24 @@ export const useSftpConnections = ({
           let homeDir = sharedHostCache?.homeDir ?? startPath;
 
           if (!sharedHostCache) {
-            const statSftp = netcattyBridge.get()?.statSftp;
-            if (statSftp) {
+            // Detect home directory: SSH exec `echo ~` → SFTP realpath('.') → hardcoded fallback
+            const bridge = netcattyBridge.get();
+            let detected = false;
+
+            if (bridge?.getSftpHomeDir) {
+              try {
+                const result = await bridge.getSftpHomeDir(sftpId);
+                if (result?.success && result.homeDir) {
+                  startPath = result.homeDir;
+                  homeDir = result.homeDir;
+                  detected = true;
+                }
+              } catch {
+                // Fall through to hardcoded candidates
+              }
+            }
+
+            if (!detected) {
               const candidates: string[] = [];
               if (credentials.username === "root") {
                 candidates.push("/root");
@@ -281,63 +350,33 @@ export const useSftpConnections = ({
               } else {
                 candidates.push("/root");
               }
-              for (const candidate of candidates) {
-                try {
-                  const stat = await statSftp(sftpId, candidate, filenameEncoding);
-                  if (stat?.type === "directory") {
-                    startPath = candidate;
-                    homeDir = candidate;
-                    break;
-                  }
-                } catch {
-                  // Ignore missing/permission errors
-                }
-              }
-            } else {
-              if (credentials.username === "root") {
-                try {
-                  const rootFiles = await netcattyBridge.get()?.listSftp(sftpId, "/root", filenameEncoding);
-                  if (rootFiles) {
-                    startPath = "/root";
-                    homeDir = "/root";
-                  }
-                } catch {
-                  // Fallback path not available
-                }
-              } else if (credentials.username) {
-                try {
-                  const homeFiles = await netcattyBridge.get()?.listSftp(
-                    sftpId,
-                    `/home/${credentials.username}`,
-                    filenameEncoding,
-                  );
-                  if (homeFiles) {
-                    startPath = `/home/${credentials.username}`;
-                    homeDir = startPath;
-                  }
-                } catch {
-                  // Fall through to /root check
-                }
-                if (startPath === "/") {
+              const statSftp = bridge?.statSftp;
+              if (statSftp) {
+                for (const candidate of candidates) {
                   try {
-                    const rootFiles = await netcattyBridge.get()?.listSftp(sftpId, "/root", filenameEncoding);
-                    if (rootFiles) {
-                      startPath = "/root";
-                      homeDir = "/root";
+                    const stat = await statSftp(sftpId, candidate, filenameEncoding);
+                    if (stat?.type === "directory") {
+                      startPath = candidate;
+                      homeDir = candidate;
+                      break;
                     }
                   } catch {
-                    // Fallback path not available
+                    // Ignore missing/permission errors
                   }
                 }
               } else {
-                try {
-                  const rootFiles = await netcattyBridge.get()?.listSftp(sftpId, "/root", filenameEncoding);
-                  if (rootFiles) {
-                    startPath = "/root";
-                    homeDir = "/root";
+                // Fallback: probe candidates via listSftp when statSftp is unavailable
+                for (const candidate of candidates) {
+                  try {
+                    const files = await bridge?.listSftp(sftpId, candidate, filenameEncoding);
+                    if (files) {
+                      startPath = candidate;
+                      homeDir = candidate;
+                      break;
+                    }
+                  } catch {
+                    // Ignore missing/permission errors
                   }
-                } catch {
-                  // Fallback path not available
                 }
               }
             }
@@ -413,6 +452,7 @@ export const useSftpConnections = ({
             files,
             loading: false,
             reconnecting: false,
+            connectionLogs: [], // Clear after successful connect to avoid replay during navigation
           }));
         } catch (err) {
           if (navSeqRef.current[side] !== connectRequestId) return;
@@ -430,6 +470,8 @@ export const useSftpConnections = ({
             loading: false,
             reconnecting: false,
           }));
+        } finally {
+          unsubSftpProgress?.();
         }
       }
     },
@@ -454,32 +496,39 @@ export const useSftpConnections = ({
       !initialConnectDoneRef.current &&
       leftTabs.tabs.length === 0
     ) {
-      initialConnectDoneRef.current = true;
-      setTimeout(() => {
+      const timer = window.setTimeout(() => {
+        initialConnectDoneRef.current = true;
         connect("left", "local");
       }, 0);
+      return () => window.clearTimeout(timer);
     }
   }, [autoConnectLocalOnMount, connect, leftTabs.tabs.length]);
 
   useEffect(() => {
-    const attemptReconnect = async (side: "left" | "right") => {
+    const reconnectTimers: number[] = [];
+
+    const scheduleReconnect = (side: "left" | "right") => {
       const lastHost = lastConnectedHostRef.current[side];
-      if (lastHost && reconnectingRef.current[side]) {
-        await new Promise((resolve) => setTimeout(resolve, 1000));
-        if (reconnectingRef.current[side]) {
-          connect(side, lastHost);
-        }
-      }
+      if (!lastHost || !reconnectingRef.current[side]) return;
+
+      const timer = window.setTimeout(() => {
+        if (!reconnectingRef.current[side]) return;
+        void connect(side, lastHost);
+      }, 1000);
+      reconnectTimers.push(timer);
     };
 
     if (leftPane.reconnecting && reconnectingRef.current.left) {
-      attemptReconnect("left");
+      scheduleReconnect("left");
     }
     if (rightPane.reconnecting && reconnectingRef.current.right) {
-      attemptReconnect("right");
+      scheduleReconnect("right");
     }
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [leftPane.reconnecting, rightPane.reconnecting, connect]);
+
+    return () => {
+      reconnectTimers.forEach((timer) => window.clearTimeout(timer));
+    };
+  }, [leftPane.reconnecting, rightPane.reconnecting, connect, lastConnectedHostRef, reconnectingRef]);
 
   const disconnect = useCallback(
     async (side: "left" | "right") => {

application/state/sftp/useSftpDirectoryListing.ts

@@ -49,6 +49,7 @@ export const useSftpDirectoryListing = () => {
           sizeFormatted: formatFileSize(size),
           lastModified,
           lastModifiedFormatted: formatDate(lastModified),
+          permissions: f.permissions,
           linkTarget: f.linkTarget as "file" | "directory" | null | undefined,
         };
       });

application/state/sftp/useSftpExternalOperations.ts

@@ -20,7 +20,7 @@ export type { UploadResult };
 
 interface UseSftpExternalOperationsParams {
   getActivePane: (side: "left" | "right") => SftpPane | null;
-  refresh: (side: "left" | "right") => Promise<void>;
+  refresh: (side: "left" | "right", options?: { tabId?: string }) => Promise<void>;
   sftpSessionsRef: React.MutableRefObject<Map<string, string>>;
   connectionCacheKeyMapRef: React.MutableRefObject<Map<string, string>>;
   clearDirCacheEntry?: (connectionId: string, path: string) => void;
@@ -524,6 +524,7 @@ export const useSftpExternalOperations = (
         throw new Error("SFTP session not found");
       }
 
+      const uploadPaneId = pane.id;
       // Create a new upload controller for this upload
       const controller = new UploadController();
       uploadControllerRef.current = controller;
@@ -550,7 +551,7 @@ export const useSftpExternalOperations = (
           controller
         );
 
-        await refresh(side);
+        await refresh(side, { tabId: uploadPaneId });
         return results;
       } catch (error) {
         logger.error("[SFTP] Upload failed:", error);
@@ -594,6 +595,9 @@ export const useSftpExternalOperations = (
         throw new Error("SFTP session not found");
       }
 
+      // Capture the pane ID now so we can refresh the correct tab after
+      // upload, even if focus switches during the transfer.
+      const uploadPaneId = pane.id;
       const controller = new UploadController();
       uploadControllerRef.current = controller;
       const uploadTargetPath = options?.targetPath || pane.connection.currentPath;
@@ -623,17 +627,14 @@ export const useSftpExternalOperations = (
           controller,
         );
 
-        // Refresh the current directory and invalidate the upload target's
-        // cache entry.  If the user navigated away during the upload, the
-        // invalidation ensures returning to the target path triggers a fresh
-        // listing instead of serving stale cached data.
-        const livePane = getActivePane(side);
-        if (livePane?.connection) {
-          if (livePane.connection.currentPath !== uploadTargetPath && clearDirCacheEntry) {
-            clearDirCacheEntry(livePane.connection.id, uploadTargetPath);
-          }
-          await refresh(side);
+        // Refresh the specific tab that initiated the upload (not whichever
+        // tab is active now — focus may have switched during the transfer).
+        // Also invalidate the upload target's cache entry so returning to
+        // that path triggers a fresh listing.
+        if (clearDirCacheEntry) {
+          clearDirCacheEntry(pane.connection.id, uploadTargetPath);
         }
+        await refresh(side, { tabId: uploadPaneId });
         return results;
       } catch (error) {
         logger.error("[SFTP] Upload failed:", error);

application/state/sftp/useSftpHostCredentials.ts

@@ -1,5 +1,6 @@
 import { useCallback } from "react";
 import type { Host, Identity, SSHKey } from "../../../domain/models";
+import { isEncryptedCredentialPlaceholder, sanitizeCredentialValue } from "../../../domain/credentials";
 import { resolveHostAuth } from "../../../domain/sshAuth";
 
 interface UseSftpHostCredentialsParams {
@@ -24,22 +25,32 @@ export const useSftpHostCredentials = ({
           host: host.proxyConfig.host,
           port: host.proxyConfig.port,
           username: host.proxyConfig.username,
-          password: host.proxyConfig.password,
+          password: sanitizeCredentialValue(host.proxyConfig.password),
         }
         : undefined;
-
       let jumpHosts: NetcattyJumpHost[] | undefined;
       if (host.hostChain?.hostIds && host.hostChain.hostIds.length > 0) {
         jumpHosts = host.hostChain.hostIds
           .map((hostId) => hosts.find((h) => h.id === hostId))
           .filter((h): h is Host => !!h)
-          .map((jumpHost) => {
+          .map((jumpHost, index) => {
             const jumpAuth = resolveHostAuth({
               host: jumpHost,
               keys,
               identities,
             });
             const jumpKey = jumpAuth.key;
+            const hasConfiguredJumpProxyEndpoint =
+              index === 0 &&
+              !!(jumpHost.proxyConfig?.host && jumpHost.proxyConfig?.port);
+            if (
+              hasConfiguredJumpProxyEndpoint &&
+              jumpHost.proxyConfig?.username &&
+              isEncryptedCredentialPlaceholder(jumpHost.proxyConfig.password) &&
+              !sanitizeCredentialValue(jumpHost.proxyConfig.password)
+            ) {
+              throw new Error(`Proxy credentials for jump host "${jumpHost.label || jumpHost.hostname}" cannot be decrypted on this device. Open host settings and re-enter the proxy password.`);
+            }
             return {
               hostname: jumpHost.hostname,
               port: jumpHost.port || 22,
@@ -52,9 +63,23 @@ export const useSftpHostCredentials = ({
               keyId: jumpAuth.keyId,
               keySource: jumpKey?.source,
               label: jumpHost.label,
+              proxy: jumpHost.proxyConfig?.host && jumpHost.proxyConfig?.port
+                ? {
+                  type: jumpHost.proxyConfig.type,
+                  host: jumpHost.proxyConfig.host,
+                  port: jumpHost.proxyConfig.port,
+                  username: jumpHost.proxyConfig.username,
+                  password: sanitizeCredentialValue(jumpHost.proxyConfig.password),
+                }
+                : undefined,
+              identityFilePaths: jumpHost.identityFilePaths,
             };
           });
       }
+      const usesTargetProxyForFirstHop = !!proxyConfig && !jumpHosts?.[0]?.proxy;
+      if (usesTargetProxyForFirstHop && host.proxyConfig?.username && isEncryptedCredentialPlaceholder(host.proxyConfig.password) && !proxyConfig?.password) {
+        throw new Error("Proxy credentials cannot be decrypted on this device. Open host settings and re-enter the proxy password.");
+      }
 
       return {
         hostname: host.hostname,
@@ -70,6 +95,7 @@ export const useSftpHostCredentials = ({
         proxy: proxyConfig,
         jumpHosts: jumpHosts && jumpHosts.length > 0 ? jumpHosts : undefined,
         sudo: host.sftpSudo,
+        identityFilePaths: host.identityFilePaths,
       };
     },
     [hosts, identities, keys],

application/state/sftp/useSftpPaneActions.ts

@@ -29,8 +29,8 @@ interface UseSftpPaneActionsParams {
 }
 
 interface UseSftpPaneActionsResult {
-  navigateTo: (side: "left" | "right", path: string, options?: { force?: boolean }) => Promise<void>;
-  refresh: (side: "left" | "right") => Promise<void>;
+  navigateTo: (side: "left" | "right", path: string, options?: { force?: boolean; tabId?: string }) => Promise<void>;
+  refresh: (side: "left" | "right", options?: { tabId?: string }) => Promise<void>;
   navigateUp: (side: "left" | "right") => Promise<void>;
   openEntry: (side: "left" | "right", entry: SftpFileEntry) => Promise<void>;
   toggleSelection: (side: "left" | "right", fileName: string, multiSelect: boolean) => void;
@@ -114,23 +114,18 @@ export const useSftpPaneActions = ({
     async (
       side: "left" | "right",
       path: string,
-      options?: { force?: boolean },
+      options?: { force?: boolean; tabId?: string },
     ) => {
-      console.log("[SFTP navigateTo] called", { side, path, force: options?.force });
-
-      const pane = getActivePane(side);
       const sideTabs = side === "left" ? leftTabsRef.current : rightTabsRef.current;
-      const activeTabId = sideTabs.activeTabId;
+      // When tabId is specified, target that specific tab instead of the active one.
+      // This allows refreshing a background tab (e.g. after a transfer completes
+      // while focus has switched to another host).
+      const targetTabId = options?.tabId ?? sideTabs.activeTabId;
+      const pane = options?.tabId
+        ? sideTabs.tabs.find((t) => t.id === options.tabId) ?? null
+        : getActivePane(side);
 
-      console.log("[SFTP navigateTo] state check", {
-        paneId: pane?.id,
-        hasConnection: !!pane?.connection,
-        activeTabId,
-        currentPath: pane?.connection?.currentPath,
-      });
-
-      if (!pane?.connection || !activeTabId) {
-        console.log("[SFTP navigateTo] No pane/connection/activeTabId, returning early");
+      if (!pane?.connection || !targetTabId) {
         return;
       }
 
@@ -146,15 +141,14 @@ export const useSftpPaneActions = ({
         Date.now() - cached.timestamp < dirCacheTtlMs &&
         cached.files
       ) {
-        console.log("[SFTP navigateTo] Using cached files for path", { path, cacheKey });
-        tabNavSeqRef.current.set(activeTabId, requestId);
-        lastConfirmedRef.current.set(activeTabId, {
+        tabNavSeqRef.current.set(targetTabId, requestId);
+        lastConfirmedRef.current.set(targetTabId, {
           connectionId,
           path,
           files: cached.files,
           selectedFiles: new Set(),
         });
-        updateTab(side, activeTabId, (prev) => ({
+        updateTab(side, targetTabId, (prev) => ({
           ...prev,
           connection: prev.connection
             ? { ...prev.connection, currentPath: path }
@@ -180,29 +174,28 @@ export const useSftpPaneActions = ({
         return;
       }
 
-      console.log("[SFTP navigateTo] Fetching files from server for path", { path });
       // Re-seed confirmed state whenever the pane is settled (not loading), or
       // when the connection has changed. This captures post-mutation state from
       // optimistic updates (e.g. deleteFilesAtPath) so that a failed refresh
       // doesn't resurrect deleted items.
-      const existing = lastConfirmedRef.current.get(activeTabId);
+      const existing = lastConfirmedRef.current.get(targetTabId);
       if (!existing || existing.connectionId !== connectionId || !pane.loading) {
-        lastConfirmedRef.current.set(activeTabId, {
+        lastConfirmedRef.current.set(targetTabId, {
           connectionId,
           path: pane.connection.currentPath,
           files: pane.files,
           selectedFiles: pane.selectedFiles,
         });
       }
-      const confirmed = lastConfirmedRef.current.get(activeTabId)!;
+      const confirmed = lastConfirmedRef.current.get(targetTabId)!;
       const previousPath = confirmed.path;
       const previousFiles = confirmed.files;
       const previousSelection = confirmed.selectedFiles;
-      tabNavSeqRef.current.set(activeTabId, requestId);
+      tabNavSeqRef.current.set(targetTabId, requestId);
       // Keep existing files visible during loading — the loading overlay
       // (pointer-events-none) prevents interaction. This avoids blanking a tab
       // that gets superseded by another tab navigating on the same side.
-      updateTab(side, activeTabId, (prev) => ({
+      updateTab(side, targetTabId, (prev) => ({
         ...prev,
         connection: prev.connection
           ? { ...prev.connection, currentPath: path }
@@ -221,16 +214,17 @@ export const useSftpPaneActions = ({
           const sftpId = sftpSessionsRef.current.get(pane.connection.id);
           if (!sftpId) {
             clearCacheForConnection(pane.connection.id);
-            updateTab(side, activeTabId, (prev) => ({
-              ...prev,
-              connection: null,
-              files: [],
-              loading: false,
-              reconnecting: false,
-              error: "SFTP session lost. Please reconnect.",
-              selectedFiles: new Set(),
-              filter: "",
-            }));
+            // For background tabs (explicit tabId), update that tab directly
+            // instead of handleSessionError which targets the active tab.
+            if (options?.tabId) {
+              updateTab(side, targetTabId, (prev) => ({
+                ...prev,
+                error: "sftp.error.sessionLost",
+                loading: false,
+              }));
+            } else {
+              handleSessionError(side, new Error("SFTP session lost"));
+            }
             return;
           }
 
@@ -240,16 +234,15 @@ export const useSftpPaneActions = ({
             if (isSessionError(err)) {
               sftpSessionsRef.current.delete(pane.connection.id);
               clearCacheForConnection(pane.connection.id);
-              updateTab(side, activeTabId, (prev) => ({
-                ...prev,
-                connection: null,
-                files: [],
-                loading: false,
-                reconnecting: false,
-                error: "SFTP session expired. Please reconnect.",
-                selectedFiles: new Set(),
-                filter: "",
-              }));
+              if (options?.tabId) {
+                updateTab(side, targetTabId, (prev) => ({
+                  ...prev,
+                  error: "sftp.error.sessionLost",
+                  loading: false,
+                }));
+              } else {
+                handleSessionError(side, err as Error);
+              }
               return;
             }
             throw err as Error;
@@ -257,27 +250,15 @@ export const useSftpPaneActions = ({
         }
 
         if (navSeqRef.current[side] !== requestId) {
-          // Another navigation on this side superseded this request.
-          // Only restore if no newer navigation has occurred on this specific tab
-          // AND the tab still belongs to the same connection (connect/disconnect
-          // bump navSeqRef but not tabNavSeqRef).
-          if (tabNavSeqRef.current.get(activeTabId) !== requestId) {
+          // Side-level sequence was bumped by another tab's navigation or
+          // a connect/disconnect. Check if THIS tab's request is still current.
+          if (tabNavSeqRef.current.get(targetTabId) !== requestId) {
+            // This tab also has a newer navigation — drop completely.
             return;
           }
-          updateTab(side, activeTabId, (prev) => {
-            if (prev.connection?.id !== connectionId) {
-              // Tab was reconnected or disconnected; don't restore stale state.
-              return prev;
-            }
-            return {
-              ...prev,
-              connection: { ...prev.connection, currentPath: previousPath },
-              files: previousFiles,
-              selectedFiles: previousSelection,
-              loading: false,
-            };
-          });
-          return;
+          // Side was superseded by another tab, but this tab's request is
+          // still current. The fetched files are valid — fall through to
+          // apply them instead of restoring previousPath.
         }
 
         dirCacheRef.current.set(cacheKey, {
@@ -285,14 +266,14 @@ export const useSftpPaneActions = ({
           timestamp: Date.now(),
         });
 
-        lastConfirmedRef.current.set(activeTabId, {
+        lastConfirmedRef.current.set(targetTabId, {
           connectionId,
           path,
           files,
           selectedFiles: new Set(),
         });
 
-        updateTab(side, activeTabId, (prev) => ({
+        updateTab(side, targetTabId, (prev) => ({
           ...prev,
           connection: prev.connection
             ? { ...prev.connection, currentPath: path }
@@ -311,24 +292,13 @@ export const useSftpPaneActions = ({
         }
       } catch (err) {
         if (navSeqRef.current[side] !== requestId) {
-          if (tabNavSeqRef.current.get(activeTabId) !== requestId) {
+          if (tabNavSeqRef.current.get(targetTabId) !== requestId) {
             return;
           }
-          updateTab(side, activeTabId, (prev) => {
-            if (prev.connection?.id !== connectionId) {
-              return prev;
-            }
-            return {
-              ...prev,
-              connection: { ...prev.connection, currentPath: previousPath },
-              files: previousFiles,
-              selectedFiles: previousSelection,
-              loading: false,
-            };
-          });
-          return;
+          // Side superseded by another tab, but this tab's request is
+          // current — fall through to show the error on this tab.
         }
-        updateTab(side, activeTabId, (prev) => {
+        updateTab(side, targetTabId, (prev) => {
           if (prev.connection?.id !== connectionId) {
             return prev;
           }
@@ -358,16 +328,24 @@ export const useSftpPaneActions = ({
       listRemoteFiles,
       sftpSessionsRef,
       clearCacheForConnection,
+      handleSessionError,
       isSessionError,
     ],
   );
 
   const refresh = useCallback(
-    async (side: "left" | "right") => {
-      const pane = getActivePane(side);
+    async (side: "left" | "right", options?: { tabId?: string }) => {
+      const sideTabs = side === "left" ? leftTabsRef.current : rightTabsRef.current;
+      const pane = options?.tabId
+        ? sideTabs.tabs.find((t) => t.id === options.tabId) ?? null
+        : getActivePane(side);
       if (pane?.connection) {
-        await navigateTo(side, pane.connection.currentPath, { force: true });
+        await navigateTo(side, pane.connection.currentPath, { force: true, tabId: options?.tabId });
       } else if (!pane?.connection && pane?.error) {
+        // For background tabs, don't trigger reconnection (it operates on
+        // the active tab). Just leave the error state for the user to see
+        // when they switch back to that tab.
+        if (options?.tabId) return;
         const lastHost = lastConnectedHostRef.current[side];
         if (lastHost && !reconnectingRef.current[side]) {
           reconnectingRef.current[side] = true;
@@ -384,7 +362,7 @@ export const useSftpPaneActions = ({
         }
       }
     },
-    [getActivePane, navigateTo, updateActiveTab, lastConnectedHostRef, reconnectingRef],
+    [getActivePane, leftTabsRef, rightTabsRef, navigateTo, updateActiveTab, lastConnectedHostRef, reconnectingRef],
   );
 
   const navigateUp = useCallback(
@@ -405,42 +383,24 @@ export const useSftpPaneActions = ({
 
   const openEntry = useCallback(
     async (side: "left" | "right", entry: SftpFileEntry) => {
-      console.log("[SFTP openEntry] called", { side, entryName: entry.name, entryType: entry.type });
-
       const pane = getActivePane(side);
-      console.log("[SFTP openEntry] getActivePane result", {
-        paneId: pane?.id,
-        hasConnection: !!pane?.connection,
-        currentPath: pane?.connection?.currentPath,
-      });
 
       if (!pane?.connection) {
-        console.log("[SFTP openEntry] No pane or connection, returning early");
         return;
       }
 
       if (entry.name === "..") {
         const currentPath = pane.connection.currentPath;
         const isAtRoot = currentPath === "/" || isWindowsRoot(currentPath);
-        console.log("[SFTP openEntry] Navigating up from '..'", {
-          currentPath,
-          isAtRoot,
-          isWindowsRoot: isWindowsRoot(currentPath),
-        });
-
         if (!isAtRoot) {
           const parentPath = getParentPath(currentPath);
-          console.log("[SFTP openEntry] Calculated parent path", { currentPath, parentPath });
           await navigateTo(side, parentPath);
-        } else {
-          console.log("[SFTP openEntry] Already at root, not navigating");
         }
         return;
       }
 
       if (isNavigableDirectory(entry)) {
         const newPath = joinPath(pane.connection.currentPath, entry.name);
-        console.log("[SFTP openEntry] Navigating into directory", { currentPath: pane.connection.currentPath, entryName: entry.name, newPath });
         await navigateTo(side, newPath);
       }
     },

application/state/sftp/useSftpTabsState.ts

@@ -2,7 +2,7 @@ import React, { useCallback, useMemo, useRef, useState } from "react";
 import { createEmptyPane, EMPTY_LEFT_PANE_ID, EMPTY_RIGHT_PANE_ID, SftpPane, SftpSideTabs } from "./types";
 import { logger } from "../../../lib/logger";
 
-export interface SftpTabsState {
+interface SftpTabsState {
   leftTabs: SftpSideTabs;
   rightTabs: SftpSideTabs;
   leftTabsRef: React.MutableRefObject<SftpSideTabs>;

application/state/sftp/useSftpTransfers.ts

@@ -1,4 +1,4 @@
-import React, { useCallback, useEffect, useMemo, useRef, useState } from "react";
+import React, { useCallback, useMemo, useRef, useState } from "react";
 import {
   FileConflict,
   SftpFileEntry,
@@ -14,7 +14,7 @@ import { joinPath } from "./utils";
 
 interface UseSftpTransfersParams {
   getActivePane: (side: "left" | "right") => SftpPane | null;
-  refresh: (side: "left" | "right") => Promise<void>;
+  refresh: (side: "left" | "right", options?: { tabId?: string }) => Promise<void>;
   sftpSessionsRef: React.MutableRefObject<Map<string, string>>;
   listLocalFiles: (path: string) => Promise<SftpFileEntry[]>;
   listRemoteFiles: (sftpId: string, path: string, encoding?: SftpFilenameEncoding) => Promise<SftpFileEntry[]>;
@@ -64,66 +64,10 @@ export const useSftpTransfers = ({
   const [transfers, setTransfers] = useState<TransferTask[]>([]);
   const [conflicts, setConflicts] = useState<FileConflict[]>([]);
 
-  const progressIntervalsRef = useRef<Map<string, NodeJS.Timeout>>(new Map());
   // Track cancelled task IDs for checking during async operations
   const cancelledTasksRef = useRef<Set<string>>(new Set());
   const completionHandlersRef = useRef<Map<string, (result: TransferResult) => void | Promise<void>>>(new Map());
 
-  useEffect(() => {
-    const intervalsRef = progressIntervalsRef.current;
-    return () => {
-      intervalsRef.forEach((interval) => {
-        clearInterval(interval);
-      });
-      intervalsRef.clear();
-    };
-  }, []);
-
-  const startProgressSimulation = useCallback(
-    (taskId: string, estimatedBytes: number) => {
-      const existing = progressIntervalsRef.current.get(taskId);
-      if (existing) clearInterval(existing);
-
-      const baseSpeed = Math.max(50000, Math.min(500000, estimatedBytes / 10));
-      const variability = 0.3;
-
-      let transferred = 0;
-      const interval = setInterval(() => {
-        const speedFactor = 1 + (Math.random() - 0.5) * variability;
-        const chunkSize = Math.floor(baseSpeed * speedFactor * 0.1);
-        transferred = Math.min(transferred + chunkSize, estimatedBytes);
-
-        setTransfers((prev) =>
-          prev.map((t) => {
-            if (t.id !== taskId || t.status !== "transferring") return t;
-            return {
-              ...t,
-              transferredBytes: transferred,
-              totalBytes: estimatedBytes,
-              speed: chunkSize * 10,
-            };
-          }),
-        );
-
-        if (transferred >= estimatedBytes * 0.95) {
-          clearInterval(interval);
-          progressIntervalsRef.current.delete(taskId);
-        }
-      }, 100);
-
-      progressIntervalsRef.current.set(taskId, interval);
-    },
-    [],
-  );
-
-  const stopProgressSimulation = useCallback((taskId: string) => {
-    const interval = progressIntervalsRef.current.get(taskId);
-    if (interval) {
-      clearInterval(interval);
-      progressIntervalsRef.current.delete(taskId);
-    }
-  }, []);
-
   const clearCancelledTask = useCallback((taskId: string) => {
     cancelledTasksRef.current.delete(taskId);
   }, []);
@@ -207,114 +151,64 @@ export const useSftpTransfers = ({
       throw new Error("Transfer cancelled");
     }
 
-    if (netcattyBridge.get()?.startStreamTransfer) {
-      return new Promise((resolve, reject) => {
-        const options = {
-          transferId: task.id,
-          sourcePath: task.sourcePath,
-          targetPath: task.targetPath,
-          sourceType: sourceIsLocal ? ("local" as const) : ("sftp" as const),
-          targetType: targetIsLocal ? ("local" as const) : ("sftp" as const),
-          sourceSftpId: sourceSftpId || undefined,
-          targetSftpId: targetSftpId || undefined,
-          totalBytes: task.totalBytes || undefined,
-          sourceEncoding: sourceIsLocal ? undefined : sourceEncoding,
-          targetEncoding: targetIsLocal ? undefined : targetEncoding,
-        };
+    return new Promise((resolve, reject) => {
+      const options = {
+        transferId: task.id,
+        sourcePath: task.sourcePath,
+        targetPath: task.targetPath,
+        sourceType: sourceIsLocal ? ("local" as const) : ("sftp" as const),
+        targetType: targetIsLocal ? ("local" as const) : ("sftp" as const),
+        sourceSftpId: sourceSftpId || undefined,
+        targetSftpId: targetSftpId || undefined,
+        totalBytes: task.totalBytes || undefined,
+        sourceEncoding: sourceIsLocal ? undefined : sourceEncoding,
+        targetEncoding: targetIsLocal ? undefined : targetEncoding,
+      };
 
-        const onProgress = (
-          transferred: number,
-          total: number,
-          speed: number,
-        ) => {
-          // Bubble up streaming progress to parent (for directory transfers)
-          onStreamProgress?.(transferred, total, speed);
+      const onProgress = (
+        transferred: number,
+        total: number,
+        speed: number,
+      ) => {
+        // Bubble up streaming progress to parent (for directory transfers)
+        onStreamProgress?.(transferred, total, speed);
 
-          setTransfers((prev) =>
-            prev.map((t) => {
-              if (t.id !== task.id) return t;
-              if (t.status === "cancelled") return t;
-              const normalizedTotal = total > 0 ? total : t.totalBytes;
-              const normalizedTransferred = Math.max(
-                t.transferredBytes,
-                Math.min(transferred, normalizedTotal > 0 ? normalizedTotal : transferred),
-              );
-              return {
-                ...t,
-                transferredBytes: normalizedTransferred,
-                totalBytes: normalizedTotal,
-                speed: Number.isFinite(speed) && speed > 0 ? speed : 0,
-              };
-            }),
-          );
-        };
-
-        const onComplete = () => {
-          resolve();
-        };
-
-        const onError = (error: string) => {
-          reject(new Error(error));
-        };
-
-        netcattyBridge.require().startStreamTransfer!(
-          options,
-          onProgress,
-          onComplete,
-          onError,
-        ).catch(reject);
-      });
-    }
-
-    let content: ArrayBuffer | string;
-
-    if (sourceIsLocal) {
-      content =
-        (await netcattyBridge.get()?.readLocalFile?.(task.sourcePath)) ||
-        new ArrayBuffer(0);
-    } else if (sourceSftpId) {
-      if (netcattyBridge.get()?.readSftpBinary) {
-        content = await netcattyBridge.get()!.readSftpBinary!(
-          sourceSftpId,
-          task.sourcePath,
-          sourceEncoding,
+        setTransfers((prev) =>
+          prev.map((t) => {
+            if (t.id !== task.id) return t;
+            if (t.status === "cancelled") return t;
+            const normalizedTotal = total > 0 ? total : t.totalBytes;
+            // Clamp to [previous, total] — the backend normalizes progress
+            // but we guard against any non-monotonic edge cases.
+            const normalizedTransferred = Math.max(
+              t.transferredBytes,
+              Math.min(transferred, normalizedTotal > 0 ? normalizedTotal : transferred),
+            );
+            return {
+              ...t,
+              transferredBytes: normalizedTransferred,
+              totalBytes: normalizedTotal,
+              speed: Number.isFinite(speed) && speed > 0 ? speed : 0,
+            };
+          }),
         );
-      } else {
-        content =
-          (await netcattyBridge.get()?.readSftp(sourceSftpId, task.sourcePath, sourceEncoding)) || "";
-      }
-    } else {
-      throw new Error("No source connection");
-    }
+      };
 
-    if (targetIsLocal) {
-      if (content instanceof ArrayBuffer) {
-        await netcattyBridge.get()?.writeLocalFile?.(task.targetPath, content);
-      } else {
-        const encoder = new TextEncoder();
-        await netcattyBridge.get()?.writeLocalFile?.(
-          task.targetPath,
-          encoder.encode(content).buffer,
-        );
-      }
-    } else if (targetSftpId) {
-      if (content instanceof ArrayBuffer && netcattyBridge.get()?.writeSftpBinary) {
-        await netcattyBridge.get()!.writeSftpBinary!(
-          targetSftpId,
-          task.targetPath,
-          content,
-          targetEncoding,
-        );
-      } else {
-        const text =
-          content instanceof ArrayBuffer
-            ? new TextDecoder().decode(content)
-            : content;
-        await netcattyBridge.get()?.writeSftp(targetSftpId, task.targetPath, text, targetEncoding);
-      }
-    } else {
-      throw new Error("No target connection");
-    }
+      const onComplete = () => {
+        resolve();
+      };
+
+      const onError = (error: string) => {
+        reject(new Error(error));
+      };
+
+      netcattyBridge.require().startStreamTransfer!(
+        options,
+        onProgress,
+        onComplete,
+        onError,
+      ).catch(reject);
+    });
   };
 
   const transferDirectory = async (
@@ -456,6 +350,7 @@ export const useSftpTransfers = ({
         // Fall back to the existing estimate below if size discovery fails.
       }
     } else if (actualFileSize === 0) {
+      // Fallback stat when file wasn't in the pane's file list (e.g., filtered view)
       try {
         const sourceSftpId = sourcePane.connection?.isLocal
           ? null
@@ -463,14 +358,24 @@ export const useSftpTransfers = ({
 
         if (sourcePane.connection?.isLocal) {
           const stat = await netcattyBridge.get()?.statLocal?.(task.sourcePath);
-          if (stat) actualFileSize = stat.size;
+          if (stat) {
+            actualFileSize = stat.size;
+            if (!task.sourceLastModified && stat.lastModified) {
+              task.sourceLastModified = stat.lastModified;
+            }
+          }
         } else if (sourceSftpId) {
           const stat = await netcattyBridge.get()?.statSftp?.(
             sourceSftpId,
             task.sourcePath,
             sourceEncoding,
           );
-          if (stat) actualFileSize = stat.size;
+          if (stat) {
+            actualFileSize = stat.size;
+            if (!task.sourceLastModified && stat.lastModified) {
+              task.sourceLastModified = stat.lastModified;
+            }
+          }
         }
       } catch {
         // Ignore stat errors
@@ -484,7 +389,6 @@ export const useSftpTransfers = ({
           ? 1024 * 1024
           : 256 * 1024;
 
-    const hasStreamingTransfer = !!netcattyBridge.get()?.startStreamTransfer;
 
     const sourceSftpId = sourcePane.connection?.isLocal
       ? null
@@ -504,8 +408,6 @@ export const useSftpTransfers = ({
       throw new Error("Target SFTP session not found");
     }
 
-    let useSimulatedProgress = false;
-
     try {
       if (prescanCancelled) {
         throw new Error("Transfer cancelled");
@@ -518,41 +420,14 @@ export const useSftpTransfers = ({
         startTime: Date.now(),
       });
 
-      if (!hasStreamingTransfer && !task.isDirectory) {
-        useSimulatedProgress = true;
-        startProgressSimulation(task.id, estimatedSize);
-      }
-
       if (!task.skipConflictCheck && !task.isDirectory && targetPane.connection) {
         let targetExists = false;
         let existingStat: { size: number; mtime: number } | null = null;
-        let sourceStat: { size: number; mtime: number } | null = null;
-
-        try {
-          if (sourcePane.connection.isLocal) {
-            const stat = await netcattyBridge.get()?.statLocal?.(task.sourcePath);
-            if (stat) {
-              sourceStat = {
-                size: stat.size,
-                mtime: stat.lastModified || Date.now(),
-              };
-            }
-          } else if (sourceSftpId) {
-            const stat = await netcattyBridge.get()?.statSftp?.(
-              sourceSftpId,
-              task.sourcePath,
-              sourceEncoding,
-            );
-            if (stat) {
-              sourceStat = {
-                size: stat.size,
-                mtime: stat.lastModified || Date.now(),
-              };
-            }
-          }
-        } catch {
-          // ignore
-        }
+        // Use cached metadata from the task instead of an extra stat round-trip
+        const sourceStat: { size: number; mtime: number } | null =
+          (task.totalBytes > 0 || task.sourceLastModified)
+            ? { size: task.totalBytes, mtime: task.sourceLastModified || Date.now() }
+            : null;
 
         try {
           if (targetPane.connection.isLocal) {
@@ -583,8 +458,6 @@ export const useSftpTransfers = ({
         }
 
         if (targetExists && existingStat) {
-          stopProgressSimulation(task.id);
-
           const newConflict: FileConflict = {
             transferId: task.id,
             fileName: task.fileName,
@@ -654,10 +527,6 @@ export const useSftpTransfers = ({
         );
       }
 
-      if (useSimulatedProgress) {
-        stopProgressSimulation(task.id);
-      }
-
       setTransfers((prev) =>
         prev.map((t) => {
           if (t.id !== task.id) return t;
@@ -671,7 +540,9 @@ export const useSftpTransfers = ({
         }),
       );
 
-      await refresh(targetSide);
+      // Refresh the specific target tab, not whichever tab happens to be
+      // active now — focus may have switched during the transfer.
+      await refresh(targetSide, { tabId: targetPane.id });
       const completionHandler = completionHandlersRef.current.get(task.id);
       if (completionHandler) {
         try {
@@ -687,10 +558,6 @@ export const useSftpTransfers = ({
       }
       return "completed";
     } catch (err) {
-      if (useSimulatedProgress) {
-        stopProgressSimulation(task.id);
-      }
-
       // Check if this was a cancellation
       const isCancelled = cancelledTasksRef.current.has(task.id) ||
         (err instanceof Error && err.message === "Transfer cancelled");
@@ -754,18 +621,10 @@ export const useSftpTransfers = ({
 
       if (!sourcePane?.connection || !targetPane?.connection) return [];
 
-      const sourceEncoding: SftpFilenameEncoding = sourcePane.connection.isLocal
-        ? "auto"
-        : sourcePane.filenameEncoding || "auto";
-
       const sourcePath = options?.sourcePath ?? sourcePane.connection.currentPath;
       const targetPath = targetPane.connection.currentPath;
       const sourceConnectionId = options?.sourceConnectionId ?? sourcePane.connection.id;
 
-      const sourceSftpId = sourcePane.connection.isLocal
-        ? null
-        : sftpSessionsRef.current.get(sourceConnectionId);
-
       const newTasks: TransferTask[] = [];
 
       for (const file of sourceFiles) {
@@ -776,25 +635,11 @@ export const useSftpTransfers = ({
               ? "download"
               : "remote-to-remote";
 
-        let fileSize = 0;
-        if (!file.isDirectory) {
-          try {
-            const fullPath = joinPath(sourcePath, file.name);
-            if (sourcePane.connection!.isLocal) {
-              const stat = await netcattyBridge.get()?.statLocal?.(fullPath);
-              if (stat) fileSize = stat.size;
-            } else if (sourceSftpId) {
-              const stat = await netcattyBridge.get()?.statSftp?.(
-                sourceSftpId,
-                fullPath,
-                sourceEncoding,
-              );
-              if (stat) fileSize = stat.size;
-            }
-          } catch {
-            // ignore
-          }
-        }
+        // Use cached metadata from the source pane's file list to avoid
+        // redundant stat calls over the network.
+        const fileEntry = sourcePane.files.find((f) => f.name === file.name);
+        const fileSize = file.isDirectory ? 0 : (fileEntry?.size ?? 0);
+        const sourceLastModified = fileEntry?.lastModified ?? 0;
 
         newTasks.push({
           id: crypto.randomUUID(),
@@ -811,6 +656,7 @@ export const useSftpTransfers = ({
           speed: 0,
           startTime: Date.now(),
           isDirectory: file.isDirectory,
+          sourceLastModified,
         });
       }
 
@@ -845,8 +691,6 @@ export const useSftpTransfers = ({
       // Add to cancelled set so async operations can check
       cancelledTasksRef.current.add(transferId);
 
-      stopProgressSimulation(transferId);
-
       setTransfers((prev) =>
         prev.map((t) =>
           t.id === transferId
@@ -870,7 +714,7 @@ export const useSftpTransfers = ({
       }
 
     },
-    [stopProgressSimulation],
+    [],
   );
 
   const retryTransfer = useCallback(

application/state/sftp/utils.ts

@@ -48,39 +48,31 @@ export const joinPath = (base: string, name: string): string => {
     return `${normalizedBase}\\${name}`;
   }
   if (base === "/") return `/${name}`;
-  return `${base}/${name}`;
+  return `${base.replace(/\/+$/, "")}/${name}`;
 };
 
 export const getParentPath = (path: string): string => {
-  console.log("[SFTP getParentPath] input", { path, isWindows: isWindowsPath(path) });
-
   if (isWindowsPath(path)) {
     const normalized = normalizeWindowsRoot(path).replace(/[\\]+$/, "");
     const drive = normalized.slice(0, 2);
     if (/^[A-Za-z]:$/.test(normalized) || /^[A-Za-z]:\\$/.test(normalized)) {
-      console.log("[SFTP getParentPath] Windows root, returning", { result: `${drive}\\` });
       return `${drive}\\`;
     }
     const rest = normalized.slice(2).replace(/^[\\]+/, "");
     const parts = rest ? rest.split(/[\\]+/).filter(Boolean) : [];
     if (parts.length <= 1) {
-      console.log("[SFTP getParentPath] Windows near root, returning", { result: `${drive}\\` });
       return `${drive}\\`;
     }
     parts.pop();
     const result = `${drive}\\${parts.join("\\")}`;
-    console.log("[SFTP getParentPath] Windows result", { result });
     return result;
   }
   if (path === "/") {
-    console.log("[SFTP getParentPath] Unix root, returning /");
     return "/";
   }
   const parts = path.split("/").filter(Boolean);
-  console.log("[SFTP getParentPath] Unix parts before pop", { parts: [...parts] });
   parts.pop();
   const result = parts.length ? `/${parts.join("/")}` : "/";
-  console.log("[SFTP getParentPath] Unix result", { result, partsAfterPop: parts });
   return result;
 };
 

application/state/useAIState.ts

@@ -0,0 +1,863 @@
+import { useCallback, useEffect, useRef, useState } from 'react';
+import { localStorageAdapter } from '../../infrastructure/persistence/localStorageAdapter';
+import {
+  STORAGE_KEY_AI_PROVIDERS,
+  STORAGE_KEY_AI_ACTIVE_PROVIDER,
+  STORAGE_KEY_AI_ACTIVE_MODEL,
+  STORAGE_KEY_AI_PERMISSION_MODE,
+  STORAGE_KEY_AI_HOST_PERMISSIONS,
+  STORAGE_KEY_AI_EXTERNAL_AGENTS,
+  STORAGE_KEY_AI_DEFAULT_AGENT,
+  STORAGE_KEY_AI_COMMAND_BLOCKLIST,
+  STORAGE_KEY_AI_COMMAND_TIMEOUT,
+  STORAGE_KEY_AI_MAX_ITERATIONS,
+  STORAGE_KEY_AI_SESSIONS,
+  STORAGE_KEY_AI_ACTIVE_SESSION_MAP,
+  STORAGE_KEY_AI_AGENT_MODEL_MAP,
+  STORAGE_KEY_AI_WEB_SEARCH,
+} from '../../infrastructure/config/storageKeys';
+import type {
+  AISession,
+  AIPermissionMode,
+  ProviderConfig,
+  HostAIPermission,
+  ExternalAgentConfig,
+  ChatMessage,
+  AISessionScope,
+  WebSearchConfig,
+} from '../../infrastructure/ai/types';
+import { DEFAULT_COMMAND_BLOCKLIST } from '../../infrastructure/ai/types';
+
+/** Typed accessor for the Electron IPC bridge exposed on `window.netcatty`. */
+function getAIBridge() {
+  return (window as unknown as { netcatty?: Record<string, (...args: unknown[]) => unknown> }).netcatty;
+}
+
+const AI_STATE_CHANGED_EVENT = 'netcatty:ai-state-changed';
+
+function emitAIStateChanged(key: string) {
+  window.dispatchEvent(new CustomEvent<{ key: string }>(AI_STATE_CHANGED_EVENT, { detail: { key } }));
+}
+
+function cleanupAcpSessions(sessionIds: string[]) {
+  const bridge = getAIBridge();
+  if (!bridge?.aiAcpCleanup || sessionIds.length === 0) return;
+  for (const sessionId of sessionIds) {
+    void bridge.aiAcpCleanup(sessionId).catch(() => {});
+  }
+}
+
+function isScopeKeyActive(scopeKey: string, activeTargetIds: Set<string>) {
+  const separatorIndex = scopeKey.indexOf(':');
+  if (separatorIndex === -1) return true;
+
+  const targetId = scopeKey.slice(separatorIndex + 1);
+  if (!targetId) return true;
+
+  return activeTargetIds.has(targetId);
+}
+
+export function cleanupOrphanedAISessions(activeTargetIds: Set<string>) {
+  const currentSessions = latestAISessionsSnapshot
+    ?? localStorageAdapter.read<AISession[]>(STORAGE_KEY_AI_SESSIONS)
+    ?? [];
+  const orphanedSessionIds = currentSessions
+    .filter((session) => session.scope.targetId && !activeTargetIds.has(session.scope.targetId))
+    .map((session) => session.id);
+
+  if (orphanedSessionIds.length > 0) {
+    const orphanedSessionIdSet = new Set(orphanedSessionIds);
+
+    // Determine which sessions can be restored via host-based matching
+    const preservedIds = new Set<string>();
+    for (const session of currentSessions) {
+      if (!orphanedSessionIdSet.has(session.id)) continue;
+      // Only preserve remote terminal sessions with real hostIds
+      const isRestorable = session.scope.type === 'terminal'
+        && session.scope.hostIds?.length
+        && session.scope.hostIds.some((id) => !id.startsWith('local-') && !id.startsWith('serial-'));
+      if (isRestorable) {
+        preservedIds.add(session.id);
+      }
+    }
+
+    // Cleanup ACP sessions for all orphans (both deleted and preserved).
+    // Preserved sessions will get a new externalSessionId on next use,
+    // so cleaning the old one is safe and prevents subprocess leaks.
+    cleanupAcpSessions(orphanedSessionIds);
+
+    const nextSessions = currentSessions
+      .filter((session) => !orphanedSessionIdSet.has(session.id) || preservedIds.has(session.id))
+      .map((session) => {
+        if (!preservedIds.has(session.id) || !session.externalSessionId) {
+          return session;
+        }
+        // Drop transient ACP session handles so the next turn starts cleanly.
+        return { ...session, externalSessionId: undefined };
+      });
+
+    const sessionsChanged = nextSessions.length !== currentSessions.length
+      || nextSessions.some((session, index) => session !== currentSessions[index]);
+    if (sessionsChanged) {
+      setLatestAISessionsSnapshot(nextSessions);
+      localStorageAdapter.write(STORAGE_KEY_AI_SESSIONS, pruneSessionsForStorage(nextSessions));
+      emitAIStateChanged(STORAGE_KEY_AI_SESSIONS);
+    }
+  }
+
+  const activeSessionIdMap = latestAIActiveSessionMapSnapshot
+    ?? localStorageAdapter.read<Record<string, string | null>>(STORAGE_KEY_AI_ACTIVE_SESSION_MAP)
+    ?? {};
+  let activeSessionMapChanged = false;
+  const nextActiveSessionIdMap = { ...activeSessionIdMap };
+
+  for (const scopeKey of Object.keys(activeSessionIdMap)) {
+    if (isScopeKeyActive(scopeKey, activeTargetIds)) continue;
+    delete nextActiveSessionIdMap[scopeKey];
+    activeSessionMapChanged = true;
+  }
+
+  if (activeSessionMapChanged) {
+    setLatestAIActiveSessionMapSnapshot(nextActiveSessionIdMap);
+    localStorageAdapter.write(STORAGE_KEY_AI_ACTIVE_SESSION_MAP, nextActiveSessionIdMap);
+    emitAIStateChanged(STORAGE_KEY_AI_ACTIVE_SESSION_MAP);
+  }
+}
+
+
+/** Maximum number of sessions to keep in localStorage. */
+const MAX_STORED_SESSIONS = 50;
+/** Maximum number of messages per session when persisting to localStorage. */
+const MAX_SESSION_MESSAGES = 200;
+
+/**
+ * Prune sessions before writing to localStorage to prevent hitting the
+ * ~5-10 MB storage quota. Only affects what is persisted — the in-memory
+ * state retains all messages until the session is reloaded.
+ *
+ * - Keeps only the MAX_STORED_SESSIONS most-recently-updated sessions.
+ * - Trims each session's messages to the last MAX_SESSION_MESSAGES.
+ */
+function pruneSessionsForStorage(sessions: AISession[]): AISession[] {
+  // Sort by updatedAt descending so we keep the newest
+  const sorted = [...sessions].sort((a, b) => b.updatedAt - a.updatedAt);
+  const limited = sorted.slice(0, MAX_STORED_SESSIONS);
+  return limited.map(s => {
+    if (s.messages.length > MAX_SESSION_MESSAGES) {
+      return { ...s, messages: s.messages.slice(-MAX_SESSION_MESSAGES) };
+    }
+    return s;
+  });
+}
+
+let latestAISessionsSnapshot: AISession[] | null = null;
+let latestAIActiveSessionMapSnapshot: Record<string, string | null> | null = null;
+
+function setLatestAISessionsSnapshot(sessions: AISession[]) {
+  latestAISessionsSnapshot = sessions;
+}
+
+function setLatestAIActiveSessionMapSnapshot(activeSessionIdMap: Record<string, string | null>) {
+  latestAIActiveSessionMapSnapshot = activeSessionIdMap;
+}
+
+function buildScopeKey(scope: AISessionScope) {
+  return `${scope.type}:${scope.targetId ?? ''}`;
+}
+
+function areHostIdsEqual(left?: string[], right?: string[]) {
+  const leftIds = left ?? [];
+  const rightIds = right ?? [];
+  if (leftIds.length !== rightIds.length) return false;
+
+  const rightSet = new Set(rightIds);
+  return leftIds.every((hostId) => rightSet.has(hostId));
+}
+
+export function useAIState() {
+  // ── Provider Config ──
+  const [providers, setProvidersRaw] = useState<ProviderConfig[]>(() =>
+    localStorageAdapter.read<ProviderConfig[]>(STORAGE_KEY_AI_PROVIDERS) ?? []
+  );
+  const [activeProviderId, setActiveProviderIdRaw] = useState<string>(() =>
+    localStorageAdapter.readString(STORAGE_KEY_AI_ACTIVE_PROVIDER) ?? ''
+  );
+  const [activeModelId, setActiveModelIdRaw] = useState<string>(() =>
+    localStorageAdapter.readString(STORAGE_KEY_AI_ACTIVE_MODEL) ?? ''
+  );
+
+  // ── Permission Model ──
+  const [globalPermissionMode, setGlobalPermissionModeRaw] = useState<AIPermissionMode>(() => {
+    const stored = localStorageAdapter.readString(STORAGE_KEY_AI_PERMISSION_MODE);
+    if (stored === 'observer' || stored === 'confirm' || stored === 'autonomous') return stored;
+    return 'confirm';
+  });
+  const [hostPermissions, setHostPermissionsRaw] = useState<HostAIPermission[]>(() =>
+    localStorageAdapter.read<HostAIPermission[]>(STORAGE_KEY_AI_HOST_PERMISSIONS) ?? []
+  );
+
+  // ── External Agents ──
+  const [externalAgents, setExternalAgentsRaw] = useState<ExternalAgentConfig[]>(() =>
+    localStorageAdapter.read<ExternalAgentConfig[]>(STORAGE_KEY_AI_EXTERNAL_AGENTS) ?? []
+  );
+  const [defaultAgentId, setDefaultAgentIdRaw] = useState<string>(() =>
+    localStorageAdapter.readString(STORAGE_KEY_AI_DEFAULT_AGENT) ?? 'catty'
+  );
+
+  // ── Safety Settings ──
+  const [commandBlocklist, setCommandBlocklistRaw] = useState<string[]>(() =>
+    localStorageAdapter.read<string[]>(STORAGE_KEY_AI_COMMAND_BLOCKLIST) ?? [...DEFAULT_COMMAND_BLOCKLIST]
+  );
+  const [commandTimeout, setCommandTimeoutRaw] = useState<number>(() =>
+    localStorageAdapter.readNumber(STORAGE_KEY_AI_COMMAND_TIMEOUT) ?? 60
+  );
+  const [maxIterations, setMaxIterationsRaw] = useState<number>(() =>
+    localStorageAdapter.readNumber(STORAGE_KEY_AI_MAX_ITERATIONS) ?? 20
+  );
+
+  // ── Sessions ──
+  const [sessions, setSessionsRaw] = useState<AISession[]>(() =>
+    localStorageAdapter.read<AISession[]>(STORAGE_KEY_AI_SESSIONS) ?? []
+  );
+  // Ref that always holds the latest sessions for use inside debounced callbacks
+  const sessionsRef = useRef(sessions);
+  useEffect(() => {
+    sessionsRef.current = sessions;
+  }, [sessions]);
+  // Per-scope active session: keyed by `${scopeType}:${scopeTargetId}`
+  const [activeSessionIdMap, setActiveSessionIdMapRaw] = useState<Record<string, string | null>>(() =>
+    localStorageAdapter.read<Record<string, string | null>>(STORAGE_KEY_AI_ACTIVE_SESSION_MAP) ?? {}
+  );
+
+  // Per-agent model selection: remembers last selected model per agent
+  const [agentModelMap, setAgentModelMapRaw] = useState<Record<string, string>>(() =>
+    localStorageAdapter.read<Record<string, string>>(STORAGE_KEY_AI_AGENT_MODEL_MAP) ?? {}
+  );
+
+  // ── Web Search Config ──
+  const [webSearchConfig, setWebSearchConfigRaw] = useState<WebSearchConfig | null>(() =>
+    localStorageAdapter.read<WebSearchConfig>(STORAGE_KEY_AI_WEB_SEARCH) ?? null
+  );
+
+  useEffect(() => {
+    setLatestAISessionsSnapshot(sessions);
+  }, [sessions]);
+
+  useEffect(() => {
+    setLatestAIActiveSessionMapSnapshot(activeSessionIdMap);
+  }, [activeSessionIdMap]);
+
+  useEffect(() => {
+    const validSessionIds = new Set(sessions.map((session) => session.id));
+    let changed = false;
+    const nextActiveSessionIdMap: Record<string, string | null> = {};
+
+    for (const [scopeKey, sessionId] of Object.entries(activeSessionIdMap)) {
+      const nextSessionId = sessionId && validSessionIds.has(sessionId) ? sessionId : null;
+      nextActiveSessionIdMap[scopeKey] = nextSessionId;
+      if (nextSessionId !== sessionId) {
+        changed = true;
+      }
+    }
+
+    if (!changed) return;
+
+    setLatestAIActiveSessionMapSnapshot(nextActiveSessionIdMap);
+    localStorageAdapter.write(STORAGE_KEY_AI_ACTIVE_SESSION_MAP, nextActiveSessionIdMap);
+    setActiveSessionIdMapRaw(nextActiveSessionIdMap);
+    emitAIStateChanged(STORAGE_KEY_AI_ACTIVE_SESSION_MAP);
+  }, [sessions, activeSessionIdMap]);
+
+  const setActiveSessionId = useCallback((scopeKey: string, id: string | null) => {
+    setActiveSessionIdMapRaw(prev => {
+      const next = { ...prev, [scopeKey]: id };
+      setLatestAIActiveSessionMapSnapshot(next);
+      localStorageAdapter.write(STORAGE_KEY_AI_ACTIVE_SESSION_MAP, next);
+      emitAIStateChanged(STORAGE_KEY_AI_ACTIVE_SESSION_MAP);
+      return next;
+    });
+  }, []);
+
+  const setAgentModel = useCallback((agentId: string, modelId: string) => {
+    setAgentModelMapRaw(prev => {
+      const next = { ...prev, [agentId]: modelId };
+      localStorageAdapter.write(STORAGE_KEY_AI_AGENT_MODEL_MAP, next);
+      return next;
+    });
+  }, []);
+
+  const setWebSearchConfig = useCallback((config: WebSearchConfig | null) => {
+    setWebSearchConfigRaw(config);
+    if (config) {
+      localStorageAdapter.write(STORAGE_KEY_AI_WEB_SEARCH, config);
+    } else {
+      localStorageAdapter.remove(STORAGE_KEY_AI_WEB_SEARCH);
+    }
+  }, []);
+
+  // ── Persist helpers ──
+  const setProviders = useCallback((value: ProviderConfig[] | ((prev: ProviderConfig[]) => ProviderConfig[])) => {
+    setProvidersRaw(prev => {
+      const next = typeof value === 'function' ? value(prev) : value;
+      localStorageAdapter.write(STORAGE_KEY_AI_PROVIDERS, next);
+      return next;
+    });
+  }, []);
+
+  const setActiveProviderId = useCallback((id: string) => {
+    setActiveProviderIdRaw(id);
+    localStorageAdapter.writeString(STORAGE_KEY_AI_ACTIVE_PROVIDER, id);
+  }, []);
+
+  const setActiveModelId = useCallback((id: string) => {
+    setActiveModelIdRaw(id);
+    localStorageAdapter.writeString(STORAGE_KEY_AI_ACTIVE_MODEL, id);
+  }, []);
+
+  const setGlobalPermissionMode = useCallback((mode: AIPermissionMode) => {
+    setGlobalPermissionModeRaw(mode);
+    localStorageAdapter.writeString(STORAGE_KEY_AI_PERMISSION_MODE, mode);
+    // Sync to MCP Server bridge (observer mode blocks write operations)
+    const bridge = getAIBridge();
+    bridge?.aiMcpSetPermissionMode?.(mode);
+  }, []);
+
+  const setHostPermissions = useCallback((value: HostAIPermission[] | ((prev: HostAIPermission[]) => HostAIPermission[])) => {
+    setHostPermissionsRaw(prev => {
+      const next = typeof value === 'function' ? value(prev) : value;
+      localStorageAdapter.write(STORAGE_KEY_AI_HOST_PERMISSIONS, next);
+      return next;
+    });
+  }, []);
+
+  const setExternalAgents = useCallback((value: ExternalAgentConfig[] | ((prev: ExternalAgentConfig[]) => ExternalAgentConfig[])) => {
+    setExternalAgentsRaw(prev => {
+      const next = typeof value === 'function' ? value(prev) : value;
+      localStorageAdapter.write(STORAGE_KEY_AI_EXTERNAL_AGENTS, next);
+      return next;
+    });
+  }, []);
+
+  const setDefaultAgentId = useCallback((id: string) => {
+    setDefaultAgentIdRaw(id);
+    localStorageAdapter.writeString(STORAGE_KEY_AI_DEFAULT_AGENT, id);
+  }, []);
+
+  const setCommandBlocklist = useCallback((value: string[]) => {
+    setCommandBlocklistRaw(value);
+    localStorageAdapter.write(STORAGE_KEY_AI_COMMAND_BLOCKLIST, value);
+    // Sync to MCP Server bridge so ACP agents also respect the blocklist
+    const bridge = getAIBridge();
+    bridge?.aiMcpSetCommandBlocklist?.(value);
+  }, []);
+
+  const setCommandTimeout = useCallback((value: number) => {
+    setCommandTimeoutRaw(value);
+    localStorageAdapter.writeNumber(STORAGE_KEY_AI_COMMAND_TIMEOUT, value);
+    // Sync to MCP Server bridge
+    const bridge = getAIBridge();
+    bridge?.aiMcpSetCommandTimeout?.(value);
+  }, []);
+
+  const setMaxIterations = useCallback((value: number) => {
+    setMaxIterationsRaw(value);
+    localStorageAdapter.writeNumber(STORAGE_KEY_AI_MAX_ITERATIONS, value);
+    // Sync to MCP Server bridge (used by ACP agent path)
+    const bridge = getAIBridge();
+    bridge?.aiMcpSetMaxIterations?.(value);
+  }, []);
+
+  // ── Cross-window sync via storage events ──
+  // When the settings window updates localStorage, the main window picks up changes.
+  useEffect(() => {
+    const handleStorage = (e: StorageEvent) => {
+      try {
+        switch (e.key) {
+          case STORAGE_KEY_AI_PROVIDERS: {
+            const parsed = localStorageAdapter.read<ProviderConfig[]>(STORAGE_KEY_AI_PROVIDERS);
+            if (parsed != null && !Array.isArray(parsed)) {
+              console.warn('[useAIState] Cross-window sync: AI_PROVIDERS is not an array, skipping');
+              break;
+            }
+            setProvidersRaw(parsed ?? []);
+            break;
+          }
+          case STORAGE_KEY_AI_ACTIVE_PROVIDER:
+            setActiveProviderIdRaw(localStorageAdapter.readString(STORAGE_KEY_AI_ACTIVE_PROVIDER) ?? '');
+            break;
+          case STORAGE_KEY_AI_ACTIVE_MODEL:
+            setActiveModelIdRaw(localStorageAdapter.readString(STORAGE_KEY_AI_ACTIVE_MODEL) ?? '');
+            break;
+          case STORAGE_KEY_AI_PERMISSION_MODE: {
+            const mode = localStorageAdapter.readString(STORAGE_KEY_AI_PERMISSION_MODE);
+            if (mode === 'observer' || mode === 'confirm' || mode === 'autonomous') {
+              setGlobalPermissionModeRaw(mode);
+              getAIBridge()?.aiMcpSetPermissionMode?.(mode);
+            }
+            break;
+          }
+          case STORAGE_KEY_AI_EXTERNAL_AGENTS: {
+            const agents = localStorageAdapter.read<ExternalAgentConfig[]>(STORAGE_KEY_AI_EXTERNAL_AGENTS);
+            if (agents != null && !Array.isArray(agents)) {
+              console.warn('[useAIState] Cross-window sync: AI_EXTERNAL_AGENTS is not an array, skipping');
+              break;
+            }
+            setExternalAgentsRaw(agents ?? []);
+            break;
+          }
+          case STORAGE_KEY_AI_DEFAULT_AGENT:
+            setDefaultAgentIdRaw(localStorageAdapter.readString(STORAGE_KEY_AI_DEFAULT_AGENT) ?? 'catty');
+            break;
+          case STORAGE_KEY_AI_COMMAND_BLOCKLIST: {
+            const list = localStorageAdapter.read<string[]>(STORAGE_KEY_AI_COMMAND_BLOCKLIST);
+            if (list != null && !Array.isArray(list)) {
+              console.warn('[useAIState] Cross-window sync: AI_COMMAND_BLOCKLIST is not an array, skipping');
+              break;
+            }
+            const blocklist = list ?? [...DEFAULT_COMMAND_BLOCKLIST];
+            setCommandBlocklistRaw(blocklist);
+            getAIBridge()?.aiMcpSetCommandBlocklist?.(blocklist);
+            break;
+          }
+          case STORAGE_KEY_AI_COMMAND_TIMEOUT: {
+            const timeout = localStorageAdapter.readNumber(STORAGE_KEY_AI_COMMAND_TIMEOUT) ?? 60;
+            if (!Number.isFinite(timeout)) {
+              console.warn('[useAIState] Cross-window sync: AI_COMMAND_TIMEOUT is not a finite number, skipping');
+              break;
+            }
+            setCommandTimeoutRaw(timeout);
+            getAIBridge()?.aiMcpSetCommandTimeout?.(timeout);
+            break;
+          }
+          case STORAGE_KEY_AI_MAX_ITERATIONS: {
+            const iters = localStorageAdapter.readNumber(STORAGE_KEY_AI_MAX_ITERATIONS) ?? 20;
+            if (!Number.isFinite(iters)) {
+              console.warn('[useAIState] Cross-window sync: AI_MAX_ITERATIONS is not a finite number, skipping');
+              break;
+            }
+            setMaxIterationsRaw(iters);
+            getAIBridge()?.aiMcpSetMaxIterations?.(iters);
+            break;
+          }
+          case STORAGE_KEY_AI_HOST_PERMISSIONS: {
+            const perms = localStorageAdapter.read<HostAIPermission[]>(STORAGE_KEY_AI_HOST_PERMISSIONS);
+            if (perms != null && !Array.isArray(perms)) {
+              console.warn('[useAIState] Cross-window sync: AI_HOST_PERMISSIONS is not an array, skipping');
+              break;
+            }
+            setHostPermissionsRaw(perms ?? []);
+            break;
+          }
+          case STORAGE_KEY_AI_SESSIONS: {
+            const nextSessions = localStorageAdapter.read<AISession[]>(STORAGE_KEY_AI_SESSIONS) ?? [];
+            setLatestAISessionsSnapshot(nextSessions);
+            setSessionsRaw(nextSessions);
+            break;
+          }
+          case STORAGE_KEY_AI_AGENT_MODEL_MAP:
+            setAgentModelMapRaw(localStorageAdapter.read<Record<string, string>>(STORAGE_KEY_AI_AGENT_MODEL_MAP) ?? {});
+            break;
+          case STORAGE_KEY_AI_ACTIVE_SESSION_MAP: {
+            const nextActiveSessionIdMap =
+              localStorageAdapter.read<Record<string, string | null>>(STORAGE_KEY_AI_ACTIVE_SESSION_MAP) ?? {};
+            setLatestAIActiveSessionMapSnapshot(nextActiveSessionIdMap);
+            setActiveSessionIdMapRaw(nextActiveSessionIdMap);
+            break;
+          }
+          case STORAGE_KEY_AI_WEB_SEARCH:
+            setWebSearchConfigRaw(localStorageAdapter.read<WebSearchConfig>(STORAGE_KEY_AI_WEB_SEARCH) ?? null);
+            break;
+        }
+      } catch (err) {
+        console.warn('[useAIState] Cross-window sync: failed to process storage event for key', e.key, err);
+      }
+    };
+    window.addEventListener('storage', handleStorage);
+    const handleLocalStateChanged = (event: Event) => {
+      const key = (event as CustomEvent<{ key?: string }>).detail?.key;
+      if (!key) return;
+      switch (key) {
+        case STORAGE_KEY_AI_SESSIONS:
+          setSessionsRaw(
+            latestAISessionsSnapshot
+              ?? localStorageAdapter.read<AISession[]>(STORAGE_KEY_AI_SESSIONS)
+              ?? [],
+          );
+          return;
+        case STORAGE_KEY_AI_ACTIVE_SESSION_MAP:
+          setActiveSessionIdMapRaw(
+            latestAIActiveSessionMapSnapshot
+              ?? localStorageAdapter.read<Record<string, string | null>>(STORAGE_KEY_AI_ACTIVE_SESSION_MAP)
+              ?? {},
+          );
+          return;
+        default:
+          handleStorage({ key } as StorageEvent);
+      }
+    };
+    window.addEventListener(AI_STATE_CHANGED_EVENT, handleLocalStateChanged);
+    return () => {
+      window.removeEventListener('storage', handleStorage);
+      window.removeEventListener(AI_STATE_CHANGED_EVENT, handleLocalStateChanged);
+    };
+  }, []);
+
+  // ── Sync initial safety settings to MCP Server on mount ──
+  useEffect(() => {
+    const bridge = getAIBridge();
+    const initialBlocklist = localStorageAdapter.read<string[]>(STORAGE_KEY_AI_COMMAND_BLOCKLIST) ?? [...DEFAULT_COMMAND_BLOCKLIST];
+    bridge?.aiMcpSetCommandBlocklist?.(initialBlocklist);
+    const initialTimeout = localStorageAdapter.readNumber(STORAGE_KEY_AI_COMMAND_TIMEOUT) ?? 60;
+    bridge?.aiMcpSetCommandTimeout?.(initialTimeout);
+    const initialMaxIter = localStorageAdapter.readNumber(STORAGE_KEY_AI_MAX_ITERATIONS) ?? 20;
+    bridge?.aiMcpSetMaxIterations?.(initialMaxIter);
+    const initialPermMode = localStorageAdapter.readString(STORAGE_KEY_AI_PERMISSION_MODE) ?? 'confirm';
+    bridge?.aiMcpSetPermissionMode?.(initialPermMode);
+  }, []);
+
+  // ── Session CRUD ──
+  const persistSessions = useCallback((next: AISession[]) => {
+    localStorageAdapter.write(STORAGE_KEY_AI_SESSIONS, pruneSessionsForStorage(next));
+  }, []);
+
+  // Debounced version of persistSessions for high-frequency updates (e.g. streaming)
+  const persistTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
+  const mountedRef = useRef(true);
+
+  const debouncedPersistSessions = useCallback(() => {
+    if (persistTimerRef.current) clearTimeout(persistTimerRef.current);
+    persistTimerRef.current = setTimeout(() => {
+      if (!mountedRef.current) return; // Skip writes after unmount
+      localStorageAdapter.write(STORAGE_KEY_AI_SESSIONS, pruneSessionsForStorage(sessionsRef.current));
+      persistTimerRef.current = null;
+    }, 500);
+  }, []);
+
+  // Flush pending debounced writes on unmount
+  useEffect(() => {
+    mountedRef.current = true;
+    return () => {
+      mountedRef.current = false;
+      if (persistTimerRef.current) {
+        clearTimeout(persistTimerRef.current);
+        persistTimerRef.current = null;
+        persistSessions(sessionsRef.current);
+      }
+    };
+  }, [persistSessions]);
+
+  const createSession = useCallback((scope: AISessionScope, agentId?: string): AISession => {
+    const now = Date.now();
+    const session: AISession = {
+      id: `ai_${now}_${Math.random().toString(36).slice(2, 8)}`,
+      title: 'New Chat',
+      agentId: agentId || defaultAgentId,
+      scope,
+      messages: [],
+      createdAt: now,
+      updatedAt: now,
+    };
+    setSessionsRaw(prev => {
+      const next = [session, ...prev];
+      setLatestAISessionsSnapshot(next);
+      persistSessions(next);
+      return next;
+    });
+    const scopeKey = `${scope.type}:${scope.targetId ?? ''}`;
+    setActiveSessionId(scopeKey, session.id);
+    return session;
+  }, [defaultAgentId, persistSessions, setActiveSessionId]);
+
+  const deleteSession = useCallback((sessionId: string, scopeKey?: string) => {
+    cleanupAcpSessions([sessionId]);
+    if (persistTimerRef.current) {
+      clearTimeout(persistTimerRef.current);
+      persistTimerRef.current = null;
+    }
+    setSessionsRaw(prev => {
+      const next = prev.filter(s => s.id !== sessionId);
+      setLatestAISessionsSnapshot(next);
+      persistSessions(next);
+      return next;
+    });
+    if (scopeKey) {
+      setActiveSessionIdMapRaw(prev => {
+        if (prev[scopeKey] === sessionId) {
+          const next = { ...prev, [scopeKey]: null };
+          setLatestAIActiveSessionMapSnapshot(next);
+          localStorageAdapter.write(STORAGE_KEY_AI_ACTIVE_SESSION_MAP, next);
+          emitAIStateChanged(STORAGE_KEY_AI_ACTIVE_SESSION_MAP);
+          return next;
+        }
+        return prev;
+      });
+    }
+  }, [persistSessions]);
+
+  const deleteSessionsByTarget = useCallback((scopeType: 'terminal' | 'workspace', targetId: string) => {
+    const removedSessionIds = sessionsRef.current
+      .filter(s => s.scope.type === scopeType && s.scope.targetId === targetId)
+      .map(s => s.id);
+    cleanupAcpSessions(removedSessionIds);
+    if (persistTimerRef.current) {
+      clearTimeout(persistTimerRef.current);
+      persistTimerRef.current = null;
+    }
+    setSessionsRaw(prev => {
+      const next = prev.filter(s => {
+        return !(s.scope.type === scopeType && s.scope.targetId === targetId);
+      });
+      setLatestAISessionsSnapshot(next);
+      persistSessions(next);
+      return next;
+    });
+    const scopeKey = `${scopeType}:${targetId}`;
+    setActiveSessionIdMapRaw(prev => {
+      if (prev[scopeKey] != null) {
+        const next = { ...prev, [scopeKey]: null };
+        setLatestAIActiveSessionMapSnapshot(next);
+        localStorageAdapter.write(STORAGE_KEY_AI_ACTIVE_SESSION_MAP, next);
+        emitAIStateChanged(STORAGE_KEY_AI_ACTIVE_SESSION_MAP);
+        return next;
+      }
+      return prev;
+    });
+  }, [persistSessions]);
+
+  const updateSessionTitle = useCallback((sessionId: string, title: string) => {
+    setSessionsRaw(prev => {
+      const next = prev.map(s => s.id === sessionId ? { ...s, title, updatedAt: Date.now() } : s);
+      setLatestAISessionsSnapshot(next);
+      persistSessions(next);
+      return next;
+    });
+  }, [persistSessions]);
+
+  const updateSessionExternalSessionId = useCallback((sessionId: string, externalSessionId: string | undefined) => {
+    setSessionsRaw(prev => {
+      const next = prev.map(s => (
+        s.id === sessionId
+          ? { ...s, externalSessionId, updatedAt: Date.now() }
+          : s
+      ));
+      setLatestAISessionsSnapshot(next);
+      debouncedPersistSessions();
+      return next;
+    });
+  }, [debouncedPersistSessions]);
+
+  const retargetSessionScope = useCallback((sessionId: string, scope: AISessionScope) => {
+    const currentSession = sessionsRef.current.find((session) => session.id === sessionId);
+    if (!currentSession) return;
+
+    const currentScope = currentSession.scope;
+    const scopeChanged =
+      currentScope.type !== scope.type
+      || currentScope.targetId !== scope.targetId
+      || !areHostIdsEqual(currentScope.hostIds, scope.hostIds);
+
+    const nextScopeKey = buildScopeKey(scope);
+    const currentScopeKey = buildScopeKey(currentScope);
+
+    if (scopeChanged) {
+      setSessionsRaw((prev) => {
+        let changed = false;
+        const next = prev.map((session) => {
+          if (session.id !== sessionId) return session;
+          changed = true;
+          // Clear stale ACP handle — retarget may run before orphan cleanup
+          return { ...session, scope, externalSessionId: undefined };
+        });
+
+        if (!changed) return prev;
+
+        sessionsRef.current = next;
+        setLatestAISessionsSnapshot(next);
+        persistSessions(next);
+        return next;
+      });
+    }
+
+    setActiveSessionIdMapRaw((prev) => {
+      let changed = false;
+      const next = { ...prev };
+
+      if (currentScopeKey !== nextScopeKey && next[currentScopeKey] === sessionId) {
+        delete next[currentScopeKey];
+        changed = true;
+      }
+
+      if (next[nextScopeKey] !== sessionId) {
+        next[nextScopeKey] = sessionId;
+        changed = true;
+      }
+
+      if (!changed) return prev;
+
+      setLatestAIActiveSessionMapSnapshot(next);
+      localStorageAdapter.write(STORAGE_KEY_AI_ACTIVE_SESSION_MAP, next);
+      emitAIStateChanged(STORAGE_KEY_AI_ACTIVE_SESSION_MAP);
+      return next;
+    });
+  }, [persistSessions]);
+
+  // Maximum messages per session to prevent unbounded memory growth
+  const MAX_MESSAGES_PER_SESSION = 500;
+
+  const addMessageToSession = useCallback((sessionId: string, message: ChatMessage) => {
+    setSessionsRaw(prev => {
+      const next = prev.map(s => {
+        if (s.id !== sessionId) return s;
+        let msgs = [...s.messages, message];
+        // Trim oldest messages if exceeding limit (keep system messages)
+        if (msgs.length > MAX_MESSAGES_PER_SESSION) {
+          const systemMsgs = msgs.filter(m => m.role === 'system');
+          const nonSystemMsgs = msgs.filter(m => m.role !== 'system');
+          const dropped = nonSystemMsgs.length - (MAX_MESSAGES_PER_SESSION - systemMsgs.length);
+          console.warn(`[useAIState] Session ${sessionId}: trimmed ${dropped} oldest non-system message(s) to stay within ${MAX_MESSAGES_PER_SESSION} limit`);
+          msgs = [...systemMsgs, ...nonSystemMsgs.slice(-MAX_MESSAGES_PER_SESSION + systemMsgs.length)];
+        }
+        return { ...s, messages: msgs, updatedAt: Date.now() };
+      });
+      setLatestAISessionsSnapshot(next);
+      debouncedPersistSessions();
+      return next;
+    });
+  }, [debouncedPersistSessions]);
+
+  const updateLastMessage = useCallback((sessionId: string, updater: (msg: ChatMessage) => ChatMessage) => {
+    setSessionsRaw(prev => {
+      const next = prev.map(s => {
+        if (s.id !== sessionId || s.messages.length === 0) return s;
+        const msgs = [...s.messages];
+        msgs[msgs.length - 1] = updater(msgs[msgs.length - 1]);
+        return { ...s, messages: msgs, updatedAt: Date.now() };
+      });
+      setLatestAISessionsSnapshot(next);
+      debouncedPersistSessions();
+      return next;
+    });
+  }, [debouncedPersistSessions]);
+
+  const updateMessageById = useCallback((sessionId: string, messageId: string, updater: (msg: ChatMessage) => ChatMessage) => {
+    setSessionsRaw(prev => {
+      const next = prev.map(s => {
+        if (s.id !== sessionId) return s;
+        const idx = s.messages.findIndex(m => m.id === messageId);
+        if (idx === -1) return s;
+        const msgs = [...s.messages];
+        msgs[idx] = updater(msgs[idx]);
+        return { ...s, messages: msgs, updatedAt: Date.now() };
+      });
+      setLatestAISessionsSnapshot(next);
+      debouncedPersistSessions();
+      return next;
+    });
+  }, [debouncedPersistSessions]);
+
+  const clearSessionMessages = useCallback((sessionId: string) => {
+    if (persistTimerRef.current) {
+      clearTimeout(persistTimerRef.current);
+      persistTimerRef.current = null;
+    }
+    setSessionsRaw(prev => {
+      const next = prev.map(s => s.id === sessionId ? { ...s, messages: [], updatedAt: Date.now() } : s);
+      setLatestAISessionsSnapshot(next);
+      persistSessions(next);
+      return next;
+    });
+  }, [persistSessions]);
+
+  const cleanupOrphanedSessions = useCallback((activeTargetIds: Set<string>) => {
+    cleanupOrphanedAISessions(activeTargetIds);
+    setSessionsRaw(latestAISessionsSnapshot ?? localStorageAdapter.read<AISession[]>(STORAGE_KEY_AI_SESSIONS) ?? []);
+    setActiveSessionIdMapRaw(
+      latestAIActiveSessionMapSnapshot
+        ?? localStorageAdapter.read<Record<string, string | null>>(STORAGE_KEY_AI_ACTIVE_SESSION_MAP)
+        ?? {},
+    );
+  }, []);
+
+  // ── Provider CRUD helpers ──
+  const addProvider = useCallback((provider: ProviderConfig) => {
+    setProviders(prev => [...prev, provider]);
+  }, [setProviders]);
+
+  const updateProvider = useCallback((id: string, updates: Partial<ProviderConfig>) => {
+    setProviders(prev => prev.map(p => p.id === id ? { ...p, ...updates } : p));
+  }, [setProviders]);
+
+  const removeProvider = useCallback((id: string) => {
+    setProviders(prev => prev.filter(p => p.id !== id));
+    // Use the raw setter to avoid stale closure over setActiveProviderId
+    setActiveProviderIdRaw(prevId => {
+      if (prevId === id) {
+        const next = '';
+        localStorageAdapter.writeString(STORAGE_KEY_AI_ACTIVE_PROVIDER, next);
+        return next;
+      }
+      return prevId;
+    });
+  }, [setProviders]);
+
+  // ── Computed ──
+  const activeProvider = providers.find(p => p.id === activeProviderId) ?? null;
+
+  return {
+    // Provider config
+    providers,
+    setProviders,
+    addProvider,
+    updateProvider,
+    removeProvider,
+    activeProviderId,
+    setActiveProviderId,
+    activeModelId,
+    setActiveModelId,
+    activeProvider,
+
+    // Permission model
+    globalPermissionMode,
+    setGlobalPermissionMode,
+    hostPermissions,
+    setHostPermissions,
+
+    // External agents
+    externalAgents,
+    setExternalAgents,
+    defaultAgentId,
+    setDefaultAgentId,
+
+    // Safety
+    commandBlocklist,
+    setCommandBlocklist,
+    commandTimeout,
+    setCommandTimeout,
+    maxIterations,
+    setMaxIterations,
+
+    // Per-agent model memory
+    agentModelMap,
+    setAgentModel,
+
+    // Web search
+    webSearchConfig,
+    setWebSearchConfig,
+
+    // Sessions (per-scope active session)
+    sessions,
+    activeSessionIdMap,
+    setActiveSessionId,
+    createSession,
+    deleteSession,
+    deleteSessionsByTarget,
+    updateSessionTitle,
+    updateSessionExternalSessionId,
+    retargetSessionScope,
+    addMessageToSession,
+    updateLastMessage,
+    updateMessageById,
+    clearSessionMessages,
+    cleanupOrphanedSessions,
+  };
+}

application/state/useAgentDiscovery.ts

@@ -0,0 +1,101 @@
+import { useCallback, useEffect, useState } from 'react';
+import type { DiscoveredAgent, ExternalAgentConfig } from '../../infrastructure/ai/types';
+
+interface NetcattyBridge {
+  aiDiscoverAgents(): Promise<DiscoveredAgent[]>;
+}
+
+function getBridge(): NetcattyBridge | undefined {
+  return (window as unknown as { netcatty?: NetcattyBridge }).netcatty;
+}
+
+export function useAgentDiscovery(
+  externalAgents: ExternalAgentConfig[],
+  setExternalAgents?: (value: ExternalAgentConfig[] | ((prev: ExternalAgentConfig[]) => ExternalAgentConfig[])) => void,
+) {
+  const [discoveredAgents, setDiscoveredAgents] = useState<DiscoveredAgent[]>([]);
+  const [isDiscovering, setIsDiscovering] = useState(false);
+
+  const discover = useCallback(async () => {
+    const bridge = getBridge();
+    if (!bridge) return;
+
+    setIsDiscovering(true);
+    try {
+      const agents = await bridge.aiDiscoverAgents();
+      setDiscoveredAgents(agents);
+    } catch (err) {
+      console.error('Agent discovery failed:', err);
+    } finally {
+      setIsDiscovering(false);
+    }
+  }, []);
+
+  // Discover on mount
+  useEffect(() => {
+    discover();
+  }, [discover]);
+
+  // Auto-update args for already-configured discovered agents when
+  // the canonical args from discovery change (e.g. after an app update).
+  useEffect(() => {
+    if (!setExternalAgents || discoveredAgents.length === 0) return;
+
+    setExternalAgents((prev) => {
+      let changed = false;
+      const next = prev.map((ea) => {
+        // Only update agents that were auto-discovered (id starts with "discovered_")
+        if (!ea.id.startsWith('discovered_')) return ea;
+
+        const match = discoveredAgents.find(
+          (da) => ea.command === da.path || ea.command === da.command,
+        );
+        if (!match) return ea;
+
+        // Check if args or ACP config differ
+        const currentArgs = JSON.stringify(ea.args || []);
+        const newArgs = JSON.stringify(match.args);
+        const acpChanged = ea.acpCommand !== match.acpCommand
+          || JSON.stringify(ea.acpArgs || []) !== JSON.stringify(match.acpArgs || []);
+        if (currentArgs !== newArgs || acpChanged) {
+          changed = true;
+          return { ...ea, args: match.args, acpCommand: match.acpCommand, acpArgs: match.acpArgs };
+        }
+        return ea;
+      });
+      return changed ? next : prev;
+    });
+  }, [discoveredAgents, setExternalAgents]);
+
+  // Filter out agents that are already configured as external agents
+  const unconfiguredAgents = discoveredAgents.filter(
+    (da) => !externalAgents.some(
+      (ea) => ea.command === da.command || ea.command === da.path,
+    ),
+  );
+
+  // Build ExternalAgentConfig from a discovered agent
+  const enableAgent = useCallback(
+    (agent: DiscoveredAgent): ExternalAgentConfig => {
+      return {
+        id: `discovered_${agent.command}`,
+        name: agent.name,
+        command: agent.path || agent.command,
+        args: agent.args,
+        icon: agent.icon,
+        enabled: true,
+        acpCommand: agent.acpCommand,
+        acpArgs: agent.acpArgs,
+      };
+    },
+    [],
+  );
+
+  return {
+    discoveredAgents,
+    unconfiguredAgents,
+    isDiscovering,
+    rediscover: discover,
+    enableAgent,
+  };
+}

application/state/useAutoSync.ts

@@ -16,10 +16,11 @@ import {
   findSyncPayloadEncryptedCredentialPaths,
 } from '../../domain/credentials';
 import { isProviderReadyForSync, type CloudProvider, type SyncPayload } from '../../domain/sync';
+import { collectSyncableSettings } from '../syncPayload';
 import { STORAGE_KEY_PORT_FORWARDING } from '../../infrastructure/config/storageKeys';
 import { localStorageAdapter } from '../../infrastructure/persistence/localStorageAdapter';
 import { getEffectiveKnownHosts } from '../../infrastructure/syncHelpers';
-import { toast } from '../../components/ui/toast';
+import { notify } from '../notification';
 
 interface AutoSyncConfig {
   // Data to sync
@@ -31,7 +32,9 @@ interface AutoSyncConfig {
   snippetPackages?: SyncPayload['snippetPackages'];
   portForwardingRules?: SyncPayload['portForwardingRules'];
   knownHosts?: SyncPayload['knownHosts'];
-  
+  /** Opaque token that changes whenever a synced setting changes. */
+  settingsVersion?: number;
+
   // Callbacks
   onApplyPayload: (payload: SyncPayload) => void;
 }
@@ -49,10 +52,13 @@ interface SyncNowOptions {
 export const useAutoSync = (config: AutoSyncConfig) => {
   const { t } = useI18n();
   const sync = useCloudSync();
+  const { onApplyPayload } = config;
   const syncTimeoutRef = useRef<NodeJS.Timeout | null>(null);
   const lastSyncedDataRef = useRef<string>('');
   const hasCheckedRemoteRef = useRef(false);
   const isInitializedRef = useRef(false);
+  const isSyncRunningRef = useRef(false);
+  const skipNextSyncRef = useRef(false);
 
   const getSyncSnapshot = useCallback(() => {
     let effectivePFRules = config.portForwardingRules;
@@ -97,19 +103,21 @@ export const useAutoSync = (config: AutoSyncConfig) => {
   const buildPayload = useCallback((): SyncPayload => {
     return {
       ...getSyncSnapshot(),
+      settings: collectSyncableSettings(),
       syncedAt: Date.now(),
     };
   }, [getSyncSnapshot]);
   
-  // Create a hash of current data for comparison
+  // Create a hash of current data for comparison (includes settings)
   const getDataHash = useCallback(() => {
-    return JSON.stringify(getSyncSnapshot());
+    return JSON.stringify({ ...getSyncSnapshot(), settings: collectSyncableSettings() });
   }, [getSyncSnapshot]);
   
   // Sync now handler - get fresh state directly from manager
   const syncNow = useCallback(async (options?: SyncNowOptions) => {
     const trigger: SyncTrigger = options?.trigger ?? 'auto';
 
+    isSyncRunningRef.current = true;
     try {
       // Get fresh state directly from CloudSyncManager singleton
       let state = manager.getState();
@@ -156,6 +164,16 @@ export const useAutoSync = (config: AutoSyncConfig) => {
 
       const results = await sync.syncNow(payload);
 
+      // Apply merged payloads first (before checking for failures) so local
+      // state gets updated even when some providers failed
+      for (const result of results.values()) {
+        if (result.mergedPayload) {
+          onApplyPayload(result.mergedPayload);
+          skipNextSyncRef.current = true;
+          break; // All providers share the same merged payload
+        }
+      }
+
       for (const result of results.values()) {
         if (!result.success) {
           if (result.conflictDetected) {
@@ -171,12 +189,14 @@ export const useAutoSync = (config: AutoSyncConfig) => {
         throw error;
       }
       console.error('[AutoSync] Sync failed:', error);
-      toast.error(
+      notify.error(
         error instanceof Error ? error.message : t('common.unknownError'),
         t('sync.autoSync.failedTitle'),
       );
+    } finally {
+      isSyncRunningRef.current = false;
     }
-  }, [sync, buildPayload, getDataHash, t]);
+  }, [sync, buildPayload, getDataHash, onApplyPayload, t]);
   
   // Check remote version and pull if newer (on startup)
   const checkRemoteVersion = useCallback(async () => {
@@ -198,19 +218,25 @@ export const useAutoSync = (config: AutoSyncConfig) => {
     if (!connectedProvider) return;
     
     try {
-      console.log('[AutoSync] Checking remote version...');
+      // Load base BEFORE downloading (downloadFromProvider overwrites the base)
+      const base = await manager.loadSyncBase(connectedProvider);
       const remotePayload = await sync.downloadFromProvider(connectedProvider);
-      
+
       if (remotePayload && remotePayload.syncedAt > state.localUpdatedAt) {
-        console.log('[AutoSync] Remote is newer, applying...');
-        config.onApplyPayload(remotePayload);
-        toast.success(t('sync.autoSync.syncedMessage'), t('sync.autoSync.syncedTitle'));
+        const { mergeSyncPayloads } = await import('../../domain/syncMerge');
+        const localPayload = buildPayload();
+        const mergeResult = mergeSyncPayloads(base, localPayload, remotePayload);
+
+        config.onApplyPayload(mergeResult.payload);
+        // Don't save base or skip auto-sync — let the data-change effect
+        // naturally trigger an upload of the merged payload (which will
+        // go through syncAllProviders and save base on success).
+        notify.success(t('sync.autoSync.syncedMessage'), t('sync.autoSync.syncedTitle'));
       }
     } catch (error) {
       console.error('[AutoSync] Failed to check remote version:', error);
-      // Don't show error toast for initial check - it's not critical
     }
-  }, [sync, config, t]);
+  }, [sync, config, buildPayload, t]);
   
   // Debounced auto-sync when data changes
   useEffect(() => {
@@ -227,7 +253,15 @@ export const useAutoSync = (config: AutoSyncConfig) => {
     }
     
     const currentHash = getDataHash();
-    
+
+    // After a merge, onApplyPayload changes local state which triggers
+    // this effect. Skip that cycle and just update the hash baseline.
+    if (skipNextSyncRef.current) {
+      skipNextSyncRef.current = false;
+      lastSyncedDataRef.current = currentHash;
+      return;
+    }
+
     // Skip if data hasn't changed
     if (currentHash === lastSyncedDataRef.current) {
       return;
@@ -235,7 +269,7 @@ export const useAutoSync = (config: AutoSyncConfig) => {
 
     // Wait for the current sync to finish, then this effect will re-run
     // because sync.isSyncing changed.
-    if (sync.isSyncing) {
+    if (sync.isSyncing || isSyncRunningRef.current) {
       return;
     }
     
@@ -246,7 +280,6 @@ export const useAutoSync = (config: AutoSyncConfig) => {
     
     // Debounce sync by 3 seconds
     syncTimeoutRef.current = setTimeout(() => {
-      console.log('[AutoSync] Data changed, syncing...');
       syncNow();
     }, 3000);
     
@@ -255,7 +288,7 @@ export const useAutoSync = (config: AutoSyncConfig) => {
         clearTimeout(syncTimeoutRef.current);
       }
     };
-  }, [sync.hasAnyConnectedProvider, sync.autoSyncEnabled, sync.isUnlocked, sync.isSyncing, getDataHash, syncNow]);
+  }, [sync.hasAnyConnectedProvider, sync.autoSyncEnabled, sync.isUnlocked, sync.isSyncing, getDataHash, syncNow, config.settingsVersion]);
   
   // Check remote version on startup/unlock
   useEffect(() => {

application/state/useCloudSync.ts

@@ -6,7 +6,7 @@
  * Uses useSyncExternalStore for real-time state synchronization across all components.
  */
 
-import { useCallback, useEffect, useMemo, useRef, useState, useSyncExternalStore } from 'react';
+import { useCallback, useEffect, useMemo, useRef, useSyncExternalStore } from 'react';
 import {
   type CloudProvider,
   type SecurityState,
@@ -24,7 +24,6 @@ import {
   isProviderReadyForSync,
 } from '../../domain/sync';
 import {
-  CloudSyncManager,
   getCloudSyncManager,
   type SyncManagerState,
 } from '../../infrastructure/services/CloudSyncManager';
@@ -83,7 +82,8 @@ export interface CloudSyncHook {
     redirectUri: string
   ) => Promise<void>;
   disconnectProvider: (provider: CloudProvider) => Promise<void>;
-  
+  resetProviderStatus: (provider: CloudProvider) => void;
+
   // Sync Actions
   syncNow: (payload: SyncPayload) => Promise<Map<CloudProvider, SyncResult>>;
   syncToProvider: (provider: CloudProvider, payload: SyncPayload) => Promise<SyncResult>;
@@ -103,12 +103,6 @@ export interface CloudSyncHook {
   refresh: () => void;
 }
 
-export interface GitHubAuthState {
-  isAuthenticating: boolean;
-  deviceFlowState: DeviceFlowState | null;
-  error: string | null;
-}
-
 // ============================================================================
 // Hook Implementation
 // ============================================================================
@@ -127,17 +121,6 @@ const getSnapshot = (): SyncManagerState => {
 };
 
 export const useCloudSync = (): CloudSyncHook => {
-  // Force update mechanism to ensure React re-renders
-  const [, forceUpdate] = useState(0);
-  
-  // Subscribe to state changes and force update
-  useEffect(() => {
-    const unsubscribe = manager.subscribeToStateChanges(() => {
-      forceUpdate(n => n + 1);
-    });
-    return unsubscribe;
-  }, []);
-  
   // Use useSyncExternalStore for real-time state sync across all components
   const state = useSyncExternalStore(subscribe, getSnapshot, getSnapshot);
 
@@ -273,7 +256,7 @@ export const useCloudSync = (): CloudSyncHook => {
       throw new Error('Unexpected auth type');
     }
     const data = result.data as { url: string; redirectUri: string };
-    
+
     // Start OAuth callback server in Electron and wait for authorization
     const bridge = netcattyBridge.get();
     const startCallback = bridge?.startOAuthCallback;
@@ -281,32 +264,48 @@ export const useCloudSync = (): CloudSyncHook => {
       // Get state from adapter for CSRF protection
       const adapter = manager.getAdapter('google') as { getPKCEState?: () => string | null } | undefined;
       const expectedState = adapter?.getPKCEState?.() || undefined;
-      
+
       // Start callback server and open browser
       const callbackPromise = startCallback(expectedState);
-      
-      // Open browser after starting server
-      setTimeout(() => {
-        window.open(data.url, "_blank", "width=600,height=700,noopener,noreferrer");
+
+      // Open browser after starting server — omit noopener/noreferrer so we can track the popup
+      let popup: Window | null = null;
+      let popupPollTimer: ReturnType<typeof setInterval> | null = null;
+      const openTimer = setTimeout(() => {
+        popup = window.open(data.url, "_blank", "width=600,height=700");
+        // Poll for popup closure — if user closes it, cancel the OAuth flow
+        if (popup) {
+          popupPollTimer = setInterval(() => {
+            if (popup?.closed) {
+              if (popupPollTimer) clearInterval(popupPollTimer);
+              bridge?.cancelOAuthCallback?.();
+            }
+          }, 500);
+        }
       }, 100);
-      
-      // Wait for callback
-      const { code } = await callbackPromise;
-      
-      // Complete auth with the received code
-      await manager.completePKCEAuth('google', code, data.redirectUri);
+
+      try {
+        // Wait for callback
+        const { code } = await callbackPromise;
+
+        // Complete auth with the received code
+        await manager.completePKCEAuth('google', code, data.redirectUri);
+      } finally {
+        clearTimeout(openTimer);
+        if (popupPollTimer) clearInterval(popupPollTimer);
+      }
     }
-    
+
     return data.url;
   }, []);
-  
+
   const connectOneDrive = useCallback(async (): Promise<string> => {
     const result = await manager.startProviderAuth('onedrive');
     if (result.type !== 'url') {
       throw new Error('Unexpected auth type');
     }
     const data = result.data as { url: string; redirectUri: string };
-    
+
     // Start OAuth callback server in Electron and wait for authorization
     const bridge = netcattyBridge.get();
     const startCallback = bridge?.startOAuthCallback;
@@ -314,22 +313,38 @@ export const useCloudSync = (): CloudSyncHook => {
       // Get state from adapter for CSRF protection
       const adapter = manager.getAdapter('onedrive') as { getPKCEState?: () => string | null } | undefined;
       const expectedState = adapter?.getPKCEState?.() || undefined;
-      
+
       // Start callback server and open browser
       const callbackPromise = startCallback(expectedState);
-      
-      // Open browser after starting server
-      setTimeout(() => {
-        window.open(data.url, "_blank", "width=600,height=700,noopener,noreferrer");
+
+      // Open browser after starting server — omit noopener/noreferrer so we can track the popup
+      let popup: Window | null = null;
+      let popupPollTimer: ReturnType<typeof setInterval> | null = null;
+      const openTimer = setTimeout(() => {
+        popup = window.open(data.url, "_blank", "width=600,height=700");
+        // Poll for popup closure — if user closes it, cancel the OAuth flow
+        if (popup) {
+          popupPollTimer = setInterval(() => {
+            if (popup?.closed) {
+              if (popupPollTimer) clearInterval(popupPollTimer);
+              bridge?.cancelOAuthCallback?.();
+            }
+          }, 500);
+        }
       }, 100);
-      
-      // Wait for callback
-      const { code } = await callbackPromise;
-      
-      // Complete auth with the received code
-      await manager.completePKCEAuth('onedrive', code, data.redirectUri);
+
+      try {
+        // Wait for callback
+        const { code } = await callbackPromise;
+
+        // Complete auth with the received code
+        await manager.completePKCEAuth('onedrive', code, data.redirectUri);
+      } finally {
+        clearTimeout(openTimer);
+        if (popupPollTimer) clearInterval(popupPollTimer);
+      }
     }
-    
+
     return data.url;
   }, []);
   
@@ -345,6 +360,10 @@ export const useCloudSync = (): CloudSyncHook => {
     await manager.disconnectProvider(provider);
   }, []);
 
+  const resetProviderStatus = useCallback((provider: CloudProvider): void => {
+    manager.resetProviderStatus(provider);
+  }, []);
+
   const connectWebDAV = useCallback(async (config: WebDAVConfig): Promise<void> => {
     await manager.connectConfigProvider('webdav', config);
   }, []);
@@ -451,7 +470,8 @@ export const useCloudSync = (): CloudSyncHook => {
     connectS3,
     completePKCEAuth,
     disconnectProvider,
-    
+    resetProviderStatus,
+
     // Sync Actions
     syncNow: syncNowWithUnlock,
     syncToProvider: syncToProviderWithUnlock,
@@ -472,60 +492,4 @@ export const useCloudSync = (): CloudSyncHook => {
   };
 };
 
-// ============================================================================
-// Convenience Hooks
-// ============================================================================
-
-/**
- * Hook for just the security state (lighter weight)
- */
-export const useSecurityState = () => {
-  const [manager] = useState<CloudSyncManager>(() => getCloudSyncManager());
-  const [securityState, setSecurityState] = useState<SecurityState>(
-    () => manager.getSecurityState()
-  );
-  
-  useEffect(() => {
-    const unsubscribe = manager.subscribe((event) => {
-      if (event.type === 'SECURITY_STATE_CHANGED') {
-        setSecurityState(event.state);
-      }
-    });
-    return unsubscribe;
-  }, [manager]);
-  
-  return {
-    securityState,
-    isUnlocked: securityState === 'UNLOCKED',
-    isLocked: securityState === 'LOCKED',
-    hasNoKey: securityState === 'NO_KEY',
-  };
-};
-
-/**
- * Hook for provider status indicators
- */
-export const useProviderStatus = (provider: CloudProvider) => {
-  const [manager] = useState<CloudSyncManager>(() => getCloudSyncManager());
-  const [connection, setConnection] = useState<ProviderConnection>(
-    () => manager.getProviderConnection(provider)
-  );
-  
-  useEffect(() => {
-    const unsubscribe = manager.subscribe(() => {
-      setConnection(manager.getProviderConnection(provider));
-    });
-    return unsubscribe;
-  }, [manager, provider]);
-  
-  return {
-    ...connection,
-    isConnected: isProviderReadyForSync(connection),
-    isSyncing: connection.status === 'syncing',
-    hasError: connection.status === 'error',
-    dotColor: getSyncDotColor(connection.status),
-    lastSyncFormatted: formatLastSync(connection.lastSync),
-  };
-};
-
 export default useCloudSync;

application/state/useFileUpload.ts

@@ -0,0 +1,79 @@
+/**
+ * useFileUpload - Handle file paste/drop with base64 conversion
+ *
+ * Supports images, PDFs, and other document types.
+ * Ported from 1code's use-agents-file-upload.ts
+ */
+import { useCallback, useState } from 'react';
+import { getPathForFile } from '../../lib/sftpFileUtils';
+
+export interface UploadedFile {
+  id: string;
+  filename: string;
+  dataUrl: string;      // data:...;base64,... for preview
+  base64Data: string;   // raw base64 for API
+  mediaType: string;    // MIME type e.g. "image/png", "application/pdf"
+  filePath?: string;    // original filesystem path (Electron only)
+}
+
+/** Reject only known binary blobs that AI models can't process */
+const REJECTED_MIME_PREFIXES = ['video/', 'audio/'];
+
+function isSupportedFile(file: File): boolean {
+  // Allow files with empty MIME (common in Electron for .sh, .yaml, etc.)
+  if (!file.type) return true;
+  return !REJECTED_MIME_PREFIXES.some(prefix => file.type.startsWith(prefix));
+}
+
+async function fileToDataUrl(file: File): Promise<{ dataUrl: string; base64: string }> {
+  return new Promise((resolve, reject) => {
+    const reader = new FileReader();
+    reader.onloadend = () => {
+      const dataUrl = reader.result as string;
+      const base64 = dataUrl.split(',')[1] || '';
+      resolve({ dataUrl, base64 });
+    };
+    reader.onerror = reject;
+    reader.readAsDataURL(file);
+  });
+}
+
+export function useFileUpload() {
+  const [files, setFiles] = useState<UploadedFile[]>([]);
+
+  const addFiles = useCallback(async (inputFiles: File[]) => {
+    const supported = inputFiles.filter(isSupportedFile);
+    if (supported.length === 0) return;
+
+    const newFiles: UploadedFile[] = await Promise.all(
+      supported.map(async (file) => {
+        const id = crypto.randomUUID();
+        const filename = file.name || `file-${Date.now()}`;
+        const mediaType = file.type || 'application/octet-stream';
+        let dataUrl = '';
+        let base64Data = '';
+        try {
+          const result = await fileToDataUrl(file);
+          dataUrl = result.dataUrl;
+          base64Data = result.base64;
+        } catch (err) {
+          console.error('[useFileUpload] Failed to convert:', err);
+        }
+        const filePath = getPathForFile(file);
+        return { id, filename, dataUrl, base64Data, mediaType, filePath };
+      }),
+    );
+
+    setFiles((prev) => [...prev, ...newFiles]);
+  }, []);
+
+  const removeFile = useCallback((id: string) => {
+    setFiles((prev) => prev.filter((f) => f.id !== id));
+  }, []);
+
+  const clearFiles = useCallback(() => {
+    setFiles([]);
+  }, []);
+
+  return { files, addFiles, removeFile, clearFiles };
+}

application/state/useGlobalHotkeys.ts

@@ -1,7 +1,7 @@
 import { useCallback, useEffect, useRef } from 'react';
 import { KeyBinding, matchesKeyBinding } from '../../domain/models';
 
-export interface HotkeyActions {
+interface HotkeyActions {
   // Tab management
   switchToTab: (tabIndex: number) => void;
   nextTab: () => void;

application/state/useImmersiveMode.ts

@@ -0,0 +1,214 @@
+/**
+ * Immersive Mode — makes the entire UI chrome adapt colors to match the active terminal's theme.
+ *
+ * Performance strategy:
+ * - All built-in themes' CSS strings are pre-computed at module load (zero cost at switch time)
+ * - Custom/unknown themes are computed lazily and cached
+ * - A single `<style>` tag with `!important` overrides inline CSS variables atomically
+ * - `useLayoutEffect` ensures the update happens before browser paint (no flash)
+ */
+import { useEffect, useLayoutEffect, useRef } from 'react';
+import { TerminalTheme } from '../../domain/models';
+import { TERMINAL_THEMES } from '../../infrastructure/config/terminalThemes';
+import { netcattyBridge } from '../../infrastructure/services/netcattyBridge';
+
+// ---------------------------------------------------------------------------
+// Hex → HSL conversion (returns "H S% L%" without the hsl() wrapper)
+// ---------------------------------------------------------------------------
+
+function hexToHsl(hex: string): string {
+  const r = parseInt(hex.slice(1, 3), 16) / 255;
+  const g = parseInt(hex.slice(3, 5), 16) / 255;
+  const b = parseInt(hex.slice(5, 7), 16) / 255;
+  const max = Math.max(r, g, b);
+  const min = Math.min(r, g, b);
+  let h = 0;
+  let s = 0;
+  const l = (max + min) / 2;
+  if (max !== min) {
+    const d = max - min;
+    s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
+    switch (max) {
+      case r: h = ((g - b) / d + (g < b ? 6 : 0)) / 6; break;
+      case g: h = ((b - r) / d + 2) / 6; break;
+      case b: h = ((r - g) / d + 4) / 6; break;
+    }
+  }
+  return `${Math.round(h * 3600) / 10} ${Math.round(s * 1000) / 10}% ${Math.round(l * 1000) / 10}%`;
+}
+
+function adjustLightness(hsl: string, delta: number): string {
+  const parts = hsl.split(/\s+/);
+  const newL = Math.max(0, Math.min(100, parseFloat(parts[2]) + delta));
+  return `${parts[0]} ${parts[1]} ${Math.round(newL * 10) / 10}%`;
+}
+
+function adjustSaturation(hsl: string, factor: number): string {
+  const parts = hsl.split(/\s+/);
+  const newS = Math.max(0, Math.min(100, parseFloat(parts[1]) * factor));
+  return `${parts[0]} ${Math.round(newS * 10) / 10}% ${parts[2]}`;
+}
+
+// ---------------------------------------------------------------------------
+// Build the CSS rule string from a TerminalTheme
+// ---------------------------------------------------------------------------
+
+const CSS_VARS = [
+  'background', 'foreground', 'card', 'card-foreground',
+  'popover', 'popover-foreground', 'primary', 'primary-foreground',
+  'secondary', 'secondary-foreground', 'muted', 'muted-foreground',
+  'accent', 'accent-foreground', 'destructive', 'destructive-foreground',
+  'border', 'input', 'ring',
+] as const;
+
+function buildImmersiveCss(theme: TerminalTheme): string {
+  const bg = hexToHsl(theme.colors.background);
+  const fg = hexToHsl(theme.colors.foreground);
+  const cursor = hexToHsl(theme.colors.cursor);
+  const isDark = theme.type === 'dark';
+
+  const card = adjustLightness(bg, isDark ? 4 : -3);
+  const secondary = adjustLightness(bg, isDark ? 6 : -5);
+  const muted = adjustLightness(bg, isDark ? 10 : -8);
+  const mutedFg = adjustSaturation(adjustLightness(fg, isDark ? -20 : 20), 0.5);
+  const border = adjustLightness(bg, isDark ? 12 : -10);
+  const cursorL = parseFloat(cursor.split(' ')[2] ?? '50');
+  const primaryFg = cursorL > 55 ? '0 0% 0%' : '0 0% 100%';
+
+  const values = [
+    bg, fg, card, fg,         // background, foreground, card, card-foreground
+    card, fg,                 // popover, popover-foreground
+    cursor, primaryFg,        // primary, primary-foreground
+    secondary, fg,            // secondary, secondary-foreground
+    muted, mutedFg,           // muted, muted-foreground
+    cursor, primaryFg,        // accent, accent-foreground
+    '0 70% 50%', '0 0% 100%', // destructive, destructive-foreground
+    border, border, cursor,   // border, input, ring
+  ];
+
+  const rules = CSS_VARS.map((name, i) => `--${name}: ${values[i]} !important`).join('; ');
+  return `:root { ${rules}; }`;
+}
+
+// ---------------------------------------------------------------------------
+// Pre-compute CSS for all built-in themes at module load — O(1) lookup at switch time
+// ---------------------------------------------------------------------------
+
+const cssCache = new Map<string, string>();
+
+// Fingerprint: id + type + 3 key colors (detects in-place edits including dark↔light)
+function themeFingerprint(t: TerminalTheme): string {
+  return `${t.id}\0${t.type}\0${t.colors.background}\0${t.colors.foreground}\0${t.colors.cursor}`;
+}
+
+// Pre-compute built-in themes
+for (const theme of TERMINAL_THEMES) {
+  cssCache.set(themeFingerprint(theme), buildImmersiveCss(theme));
+}
+
+/** Get (or lazily compute & cache) the immersive CSS for a theme. */
+function getImmersiveCss(theme: TerminalTheme): string {
+  const fp = themeFingerprint(theme);
+  let css = cssCache.get(fp);
+  if (!css) {
+    css = buildImmersiveCss(theme);
+    cssCache.set(fp, css);
+  }
+  return css;
+}
+
+// ---------------------------------------------------------------------------
+// Style tag management
+// ---------------------------------------------------------------------------
+
+const STYLE_ID = 'netcatty-immersive-override';
+
+function applyImmersiveStyle(css: string, isDark: boolean, bg: string) {
+  const root = document.documentElement;
+  const targetClass = isDark ? 'dark' : 'light';
+  if (!root.classList.contains(targetClass)) {
+    root.classList.remove('light', 'dark');
+    root.classList.add(targetClass);
+  }
+  let style = document.getElementById(STYLE_ID) as HTMLStyleElement | null;
+  if (!style) {
+    style = document.createElement('style');
+    style.id = STYLE_ID;
+    document.head.appendChild(style);
+  }
+  style.textContent = css;
+  // Sync native Electron window chrome
+  netcattyBridge.get()?.setTheme?.(isDark ? 'dark' : 'light');
+  netcattyBridge.get()?.setBackgroundColor?.(bg);
+}
+
+function removeImmersiveStyle() {
+  document.getElementById(STYLE_ID)?.remove();
+}
+
+// ---------------------------------------------------------------------------
+// Hook
+// ---------------------------------------------------------------------------
+
+export function useImmersiveMode({
+  isImmersive,
+  activeTabId,
+  activeTerminalTheme,
+  restoreOriginalTheme,
+}: {
+  isImmersive: boolean;
+  activeTabId: string;
+  activeTerminalTheme: TerminalTheme | null;
+  restoreOriginalTheme: () => void;
+}) {
+  const overrideActiveRef = useRef(false);
+  const appliedFpRef = useRef<string | null>(null);
+  const restoreRef = useRef(restoreOriginalTheme);
+  restoreRef.current = restoreOriginalTheme;
+
+  const isTerminalTab = activeTabId !== 'vault' && activeTabId !== 'sftp' && !activeTabId.startsWith('log-');
+
+  // APPLY: useLayoutEffect — runs before paint, O(1) Map lookup, single DOM write
+  useLayoutEffect(() => {
+    if (isImmersive && isTerminalTab && activeTerminalTheme) {
+      const fp = themeFingerprint(activeTerminalTheme);
+      if (appliedFpRef.current === fp) return;
+      overrideActiveRef.current = true;
+      appliedFpRef.current = fp;
+      applyImmersiveStyle(getImmersiveCss(activeTerminalTheme), activeTerminalTheme.type === 'dark', activeTerminalTheme.colors.background);
+    }
+  }, [isImmersive, isTerminalTab, activeTerminalTheme]);
+
+  // RESTORE: useEffect — runs after paint, with fade overlay
+  useEffect(() => {
+    if (isImmersive && isTerminalTab && activeTerminalTheme) return;
+    if (!overrideActiveRef.current) return;
+    overrideActiveRef.current = false;
+    appliedFpRef.current = null;
+    const bg = getComputedStyle(document.documentElement).getPropertyValue('--background').trim();
+    const overlay = document.createElement('div');
+    overlay.className = 'immersive-fade-overlay';
+    overlay.style.backgroundColor = `hsl(${bg})`;
+    document.body.appendChild(overlay);
+    removeImmersiveStyle();
+    restoreOriginalTheme();
+    requestAnimationFrame(() => {
+      overlay.classList.add('fade-out');
+      overlay.addEventListener('transitionend', () => overlay.remove(), { once: true });
+    });
+    const fallback = setTimeout(() => { if (overlay.parentNode) overlay.remove(); }, 400);
+    return () => { clearTimeout(fallback); if (overlay.parentNode) overlay.remove(); };
+  }, [isImmersive, isTerminalTab, activeTerminalTheme, restoreOriginalTheme]);
+
+  // Cleanup on unmount
+  useEffect(() => {
+    return () => {
+      removeImmersiveStyle();
+      appliedFpRef.current = null;
+      if (overrideActiveRef.current) {
+        overrideActiveRef.current = false;
+        restoreRef.current();
+      }
+    };
+  }, []);
+}

application/state/useManagedSourceSync.ts

@@ -103,8 +103,6 @@ export const useManagedSourceSync = ({
 
   const writeSshConfigToFile = useCallback(
     async (source: ManagedSource, managedHosts: Host[]) => {
-      console.log(`[ManagedSourceSync] writeSshConfigToFile called for ${source.groupName}, hosts:`, managedHosts.length);
-
       const bridge = netcattyBridge.get();
       if (!bridge?.writeLocalFile) {
         console.warn("[ManagedSourceSync] writeLocalFile not available");
@@ -121,14 +119,9 @@ export const useManagedSourceSync = ({
           managedHosts,
           hosts,
         );
-        console.log(`[ManagedSourceSync] Final content (${finalContent.length} chars)`);
-
         const encoder = new TextEncoder();
         const buffer = encoder.encode(finalContent);
-        console.log(`[ManagedSourceSync] Writing to ${source.filePath}`);
-
         await bridge.writeLocalFile(source.filePath, buffer.buffer as ArrayBuffer);
-        console.log(`[ManagedSourceSync] Write successful`);
         return true;
       } catch (err) {
         console.error("[ManagedSourceSync] Failed to write SSH config:", err);
@@ -159,12 +152,8 @@ export const useManagedSourceSync = ({
   // This should be called before deleting a managed group to avoid stale entries
   const clearAndRemoveSource = useCallback(
     async (source: ManagedSource) => {
-      console.log(`[ManagedSourceSync] Clearing managed block for ${source.groupName}`);
       // Write empty hosts list to clear the managed block
       const success = await writeSshConfigToFile(source, []);
-      if (success) {
-        console.log(`[ManagedSourceSync] Managed block cleared, removing source`);
-      }
       // Remove the source regardless of write success
       const updatedSources = managedSourcesRef.current.filter((s) => s.id !== source.id);
       onUpdateManagedSources(updatedSources);
@@ -179,19 +168,14 @@ export const useManagedSourceSync = ({
     async (sources: ManagedSource[]) => {
       if (sources.length === 0) return;
 
-      console.log(`[ManagedSourceSync] Clearing ${sources.length} managed blocks`);
-
       // Clear all files in parallel
-      const results = await Promise.all(
+      await Promise.all(
         sources.map(async (source) => {
           const success = await writeSshConfigToFile(source, []);
           return { sourceId: source.id, success };
         })
       );
 
-      const successCount = results.filter(r => r.success).length;
-      console.log(`[ManagedSourceSync] Cleared ${successCount}/${sources.length} managed blocks`);
-
       // Remove all sources atomically in a single update
       const sourceIdsToRemove = new Set(sources.map(s => s.id));
       const updatedSources = managedSourcesRef.current.filter(
@@ -273,8 +257,6 @@ export const useManagedSourceSync = ({
         const prevManaged = prevHostsBySource.get(source.id) || [];
         const currManaged = currHostsBySource.get(source.id) || [];
 
-        console.log(`[ManagedSourceSync] Source ${source.groupName}: prev=${prevManaged.length}, curr=${currManaged.length}`);
-
         if (prevManaged.length !== currManaged.length) {
           changedSourceIds.add(source.id);
           continue;
@@ -328,7 +310,6 @@ export const useManagedSourceSync = ({
     }
 
     if (changedSourceIds.size > 0) {
-      console.log(`[ManagedSourceSync] Syncing sources:`, Array.from(changedSourceIds));
       syncInProgressRef.current = true;
 
       Promise.all(

application/state/usePortForwardingAutoStart.ts

@@ -3,8 +3,8 @@
  * This should be used at the App level to ensure auto-start happens
  * when the application starts, not when the user navigates to the port forwarding page.
  */
-import { useEffect, useRef } from "react";
-import { Host, PortForwardingRule } from "../../domain/models";
+import { useCallback, useEffect, useRef } from "react";
+import { Host, Identity, PortForwardingRule, SSHKey } from "../../domain/models";
 import { STORAGE_KEY_PORT_FORWARDING } from "../../infrastructure/config/storageKeys";
 import { localStorageAdapter } from "../../infrastructure/persistence/localStorageAdapter";
 import {
@@ -17,7 +17,8 @@ import { logger } from "../../lib/logger";
 
 export interface UsePortForwardingAutoStartOptions {
   hosts: Host[];
-  keys: { id: string; privateKey: string; passphrase: string }[];
+  keys: SSHKey[];
+  identities: Identity[];
 }
 
 /**
@@ -27,10 +28,37 @@ export interface UsePortForwardingAutoStartOptions {
 export const usePortForwardingAutoStart = ({
   hosts,
   keys,
+  identities,
 }: UsePortForwardingAutoStartOptions): void => {
   const autoStartExecutedRef = useRef(false);
   const hostsRef = useRef<Host[]>(hosts);
-  const keysRef = useRef<{ id: string; privateKey: string; passphrase: string }[]>(keys);
+  const keysRef = useRef<SSHKey[]>(keys);
+  const identitiesRef = useRef<Identity[]>(identities);
+
+  const isHostAuthReady = useCallback((host: Host, seen = new Set<string>()): boolean => {
+    if (!host || seen.has(host.id)) return true;
+    seen.add(host.id);
+
+    if (host.identityId) {
+      const identity = identitiesRef.current.find((candidate) => candidate.id === host.identityId);
+      if (!identity) return false;
+      if (identity.keyId && !keysRef.current.some((key) => key.id === identity.keyId)) {
+        return false;
+      }
+    }
+    if (host.identityFileId && !keysRef.current.some((key) => key.id === host.identityFileId)) {
+      return false;
+    }
+
+    const chainIds = host.hostChain?.hostIds || [];
+    for (const chainId of chainIds) {
+      const chainHost = hostsRef.current.find((candidate) => candidate.id === chainId);
+      if (!chainHost) return false;
+      if (!isHostAuthReady(chainHost, seen)) return false;
+    }
+
+    return true;
+  }, []);
 
   // Keep refs in sync
   useEffect(() => {
@@ -41,6 +69,10 @@ export const usePortForwardingAutoStart = ({
     keysRef.current = keys;
   }, [keys]);
 
+  useEffect(() => {
+    identitiesRef.current = identities;
+  }, [identities]);
+
   // Set up the reconnect callback
   useEffect(() => {
     const handleReconnect = async (
@@ -62,7 +94,7 @@ export const usePortForwardingAutoStart = ({
         return { success: false, error: "Host not found" };
       }
 
-      return startPortForward(rule, host, keysRef.current, onStatusChange, true);
+      return startPortForward(rule, host, hostsRef.current, keysRef.current, identitiesRef.current, onStatusChange, true);
     };
 
     setReconnectCallback(handleReconnect);
@@ -76,6 +108,17 @@ export const usePortForwardingAutoStart = ({
     if (autoStartExecutedRef.current) return;
     if (hosts.length === 0) return;
 
+    const storedRules = localStorageAdapter.read<PortForwardingRule[]>(
+      STORAGE_KEY_PORT_FORWARDING,
+    ) ?? [];
+    const pendingAutoStartRules = storedRules.filter((rule) => rule.autoStart && rule.hostId);
+    if (pendingAutoStartRules.some((rule) => {
+      const host = hosts.find((candidate) => candidate.id === rule.hostId);
+      return !host || !isHostAuthReady(host);
+    })) {
+      return;
+    }
+
     // Mark as executed immediately to prevent duplicate runs
     // (React StrictMode or dependency changes could cause re-runs)
     autoStartExecutedRef.current = true;
@@ -108,7 +151,9 @@ export const usePortForwardingAutoStart = ({
           void startPortForward(
             rule,
             host,
+            hosts,
             keys,
+            identities,
             (status, error) => {
               // Update the rule status in storage
               const currentRules = localStorageAdapter.read<PortForwardingRule[]>(
@@ -135,5 +180,5 @@ export const usePortForwardingAutoStart = ({
     };
 
     void runAutoStart();
-  }, [hosts, keys]);
+  }, [hosts, identities, isHostAuthReady, keys]);
 };

application/state/usePortForwardingState.ts

@@ -1,5 +1,5 @@
 import { useCallback, useEffect, useMemo, useState } from "react";
-import { Host, PortForwardingRule } from "../../domain/models";
+import { Host, Identity, PortForwardingRule, SSHKey } from "../../domain/models";
 import {
   STORAGE_KEY_PF_PREFER_FORM_MODE,
   STORAGE_KEY_PF_VIEW_MODE,
@@ -63,7 +63,9 @@ export interface UsePortForwardingStateResult {
   startTunnel: (
     rule: PortForwardingRule,
     host: Host,
-    keys: { id: string; privateKey: string; passphrase: string }[],
+    hosts: Host[],
+    keys: SSHKey[],
+    identities: Identity[],
     onStatusChange?: (status: PortForwardingRule["status"], error?: string) => void,
     enableReconnect?: boolean,
   ) => Promise<{ success: boolean; error?: string }>;
@@ -377,14 +379,16 @@ export const usePortForwardingState = (): UsePortForwardingStateResult => {
     async (
       rule: PortForwardingRule,
       host: Host,
-      keys: { id: string; privateKey: string; passphrase: string }[],
+      hosts: Host[],
+      keys: SSHKey[],
+      identities: Identity[],
       onStatusChange?: (
         status: PortForwardingRule["status"],
         error?: string,
       ) => void,
       enableReconnect = false,
     ) => {
-      return startPortForward(rule, host, keys, (status, error) => {
+      return startPortForward(rule, host, hosts, keys, identities, (status, error) => {
         setRuleStatus(rule.id, status, error);
         onStatusChange?.(status, error ?? undefined);
       }, enableReconnect);

application/state/useSessionState.ts

@@ -38,7 +38,9 @@ export const useSessionState = () => {
   // Log views: stores open log replay tabs
   const [logViews, setLogViews] = useState<LogView[]>([]);
 
-  const createLocalTerminal = useCallback(() => {
+  const createLocalTerminal = useCallback((options?: {
+    shellType?: TerminalSession['shellType'];
+  }) => {
     const sessionId = crypto.randomUUID();
     const localHostId = `local-${sessionId}`;
     const newSession: TerminalSession = {
@@ -48,13 +50,15 @@ export const useSessionState = () => {
       hostname: 'localhost',
       username: 'local',
       status: 'connecting',
+      protocol: 'local',
+      shellType: options?.shellType,
     };
     setSessions(prev => [...prev, newSession]);
     setActiveTabId(sessionId);
     return sessionId;
   }, [setActiveTabId]);
 
-  const createSerialSession = useCallback((config: SerialConfig) => {
+  const createSerialSession = useCallback((config: SerialConfig, options?: { charset?: string }) => {
     const sessionId = crypto.randomUUID();
     const serialHostId = `serial-${sessionId}`;
     const portName = config.path.split('/').pop() || config.path;
@@ -67,6 +71,7 @@ export const useSessionState = () => {
       status: 'connecting',
       protocol: 'serial',
       serialConfig: config,
+      charset: options?.charset,
     };
     setSessions(prev => [...prev, newSession]);
     setActiveTabId(sessionId);
@@ -99,6 +104,7 @@ export const useSessionState = () => {
         status: 'connecting',
         protocol: 'serial',
         serialConfig: serialConfig,
+        charset: host.charset,
       };
       setSessions(prev => [...prev, newSession]);
       setActiveTabId(sessionId);
@@ -116,6 +122,7 @@ export const useSessionState = () => {
       protocol: host.protocol,
       port: host.port,
       moshEnabled: host.moshEnabled,
+      charset: host.charset,
     };
     setSessions(prev => [...prev, newSession]);
     setActiveTabId(newSession.id);
@@ -317,6 +324,7 @@ export const useSessionState = () => {
           status: 'connecting',
           protocol: 'serial',
           serialConfig: serialConfig,
+          charset: host.charset,
         };
       }
 
@@ -330,6 +338,7 @@ export const useSessionState = () => {
         protocol: host.protocol,
         port: host.port,
         moshEnabled: host.moshEnabled,
+        charset: host.charset,
       };
     });
 
@@ -414,11 +423,17 @@ export const useSessionState = () => {
   // direction: 'horizontal' = split top/bottom, 'vertical' = split left/right
   const splitSession = useCallback((
     sessionId: string,
-    direction: SplitDirection
+    direction: SplitDirection,
+    options?: {
+      localShellType?: TerminalSession['shellType'];
+    },
   ) => {
 	    setSessions(prevSessions => {
       const session = prevSessions.find(s => s.id === sessionId);
       if (!session) return prevSessions;
+      const nextShellType = session.protocol === 'local'
+        ? options?.localShellType
+        : session.shellType;
       
       // If session is already in a workspace, split within that workspace
       if (session.workspaceId) {
@@ -434,8 +449,10 @@ export const useSessionState = () => {
           protocol: session.protocol,
           port: session.port,
           moshEnabled: session.moshEnabled,
+          shellType: nextShellType,
+          charset: session.charset,
         };
-        
+
         // Add pane to existing workspace
         const hint: SplitHint = {
           direction,
@@ -464,13 +481,15 @@ export const useSessionState = () => {
         protocol: session.protocol,
         port: session.port,
         moshEnabled: session.moshEnabled,
+        shellType: nextShellType,
+        charset: session.charset,
       };
-      
+
       const hint: SplitHint = {
         direction,
         position: direction === 'horizontal' ? 'bottom' : 'right',
       };
-      
+
       const newWorkspace = createWorkspaceEntity(sessionId, newSession.id, hint);
       setWorkspaces(prev => [...prev, newWorkspace]);
       setActiveTabId(newWorkspace.id);
@@ -551,6 +570,7 @@ export const useSessionState = () => {
       hostname: host.hostname,
       username: host.username,
       status: 'connecting' as const,
+      charset: host.charset,
       // workspaceId will be set after workspace is created
     }));
 
@@ -569,6 +589,7 @@ export const useSessionState = () => {
       workspaceId: workspace.id,
       // Store the command to run after connection
       startupCommand: snippet.command,
+      noAutoRun: snippet.noAutoRun,
     }));
 
 	    setSessions(prev => [...prev, ...sessionsWithWorkspace]);
@@ -614,10 +635,15 @@ export const useSessionState = () => {
   }, [setActiveTabId]);
 
   // Copy a session - creates a new session with the same host connection
-  const copySession = useCallback((sessionId: string) => {
+  const copySession = useCallback((sessionId: string, options?: {
+    localShellType?: TerminalSession['shellType'];
+  }) => {
     setSessions(prevSessions => {
       const session = prevSessions.find(s => s.id === sessionId);
       if (!session) return prevSessions;
+      const nextShellType = session.protocol === 'local'
+        ? options?.localShellType
+        : session.shellType;
 
       // Create a new session with the same connection info
       const newSession: TerminalSession = {
@@ -630,6 +656,8 @@ export const useSessionState = () => {
         protocol: session.protocol,
         port: session.port,
         moshEnabled: session.moshEnabled,
+        shellType: nextShellType,
+        charset: session.charset,
         serialConfig: session.serialConfig,
       };
 
@@ -663,9 +691,11 @@ export const useSessionState = () => {
       ...workspaces.map(w => w.id),
       ...logViews.map(lv => lv.id),
     ];
+    const allTabIdSet = new Set(allTabIds);
     // Filter tabOrder to only include existing tabs, then add any new tabs at the end
-    const orderedIds = tabOrder.filter(id => allTabIds.includes(id));
-    const newIds = allTabIds.filter(id => !orderedIds.includes(id));
+    const orderedIds = tabOrder.filter(id => allTabIdSet.has(id));
+    const orderedIdSet = new Set(orderedIds);
+    const newIds = allTabIds.filter(id => !orderedIdSet.has(id));
     return [...orderedIds, ...newIds];
   }, [orphanSessions, workspaces, logViews, tabOrder]);
 
@@ -679,10 +709,12 @@ export const useSessionState = () => {
         ...workspaces.map(w => w.id),
         ...logViews.map(lv => lv.id),
       ];
+      const allTabIdSet = new Set(allTabIds);
       
       // Build current effective order: existing order + new tabs at end
-      const orderedIds = prevTabOrder.filter(id => allTabIds.includes(id));
-      const newIds = allTabIds.filter(id => !orderedIds.includes(id));
+      const orderedIds = prevTabOrder.filter(id => allTabIdSet.has(id));
+      const orderedIdSet = new Set(orderedIds);
+      const newIds = allTabIds.filter(id => !orderedIdSet.has(id));
       const currentOrder = [...orderedIds, ...newIds];
       
       const draggedIndex = currentOrder.indexOf(draggedId);

application/state/useSettingsState.ts

@@ -21,21 +21,24 @@ import {
   STORAGE_KEY_SFTP_AUTO_SYNC,
   STORAGE_KEY_SFTP_SHOW_HIDDEN_FILES,
   STORAGE_KEY_SFTP_USE_COMPRESSED_UPLOAD,
+  STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR,
   STORAGE_KEY_EDITOR_WORD_WRAP,
   STORAGE_KEY_SESSION_LOGS_ENABLED,
   STORAGE_KEY_SESSION_LOGS_DIR,
   STORAGE_KEY_SESSION_LOGS_FORMAT,
   STORAGE_KEY_TOGGLE_WINDOW_HOTKEY,
   STORAGE_KEY_CLOSE_TO_TRAY,
+  STORAGE_KEY_GLOBAL_HOTKEY_ENABLED,
+  STORAGE_KEY_AUTO_UPDATE_ENABLED,
+  STORAGE_KEY_IMMERSIVE_MODE,
 } from '../../infrastructure/config/storageKeys';
 import { DEFAULT_UI_LOCALE, resolveSupportedLocale } from '../../infrastructure/config/i18n';
 import { TERMINAL_THEMES } from '../../infrastructure/config/terminalThemes';
-import { useCustomThemes } from '../state/customThemeStore';
+import { customThemeStore, useCustomThemes } from '../state/customThemeStore';
 import { DEFAULT_FONT_SIZE } from '../../infrastructure/config/fonts';
 import { DARK_UI_THEMES, LIGHT_UI_THEMES, UiThemeTokens, getUiThemeById } from '../../infrastructure/config/uiThemes';
 import { UI_FONTS, DEFAULT_UI_FONT_ID } from '../../infrastructure/config/uiFonts';
 import { uiFontStore, useUIFontsLoaded } from './uiFontStore';
-import { useAvailableFonts } from './fontStore';
 import { localStorageAdapter } from '../../infrastructure/persistence/localStorageAdapter';
 import { netcattyBridge } from '../../infrastructure/services/netcattyBridge';
 
@@ -61,6 +64,7 @@ const DEFAULT_SFTP_DOUBLE_CLICK_BEHAVIOR: 'open' | 'transfer' = 'open';
 const DEFAULT_SFTP_AUTO_SYNC = false;
 const DEFAULT_SFTP_SHOW_HIDDEN_FILES = false;
 const DEFAULT_SFTP_USE_COMPRESSED_UPLOAD = true;
+const DEFAULT_SFTP_AUTO_OPEN_SIDEBAR = false;
 
 // Editor defaults
 const DEFAULT_EDITOR_WORD_WRAP = false;
@@ -117,8 +121,11 @@ const applyThemeTokens = (
   accentOverride: string,
 ) => {
   const root = window.document.documentElement;
-  root.classList.remove('light', 'dark');
-  root.classList.add(resolvedTheme);
+  // If immersive mode is active (style tag present), it owns the dark/light class — don't override
+  if (!document.getElementById('netcatty-immersive-override')) {
+    root.classList.remove('light', 'dark');
+    root.classList.add(resolvedTheme);
+  }
   root.style.setProperty('--background', tokens.background);
   root.style.setProperty('--foreground', tokens.foreground);
   root.style.setProperty('--card', tokens.card);
@@ -151,7 +158,6 @@ const applyThemeTokens = (
 };
 
 export const useSettingsState = () => {
-  const availableFonts = useAvailableFonts();
   const uiFontsLoaded = useUIFontsLoaded();
   const [theme, setTheme] = useState<'dark' | 'light' | 'system'>(() => {
     const stored = readStoredString(STORAGE_KEY_THEME);
@@ -229,6 +235,10 @@ export const useSettingsState = () => {
     if (stored === 'false' || stored === 'disabled') return false;
     return DEFAULT_SFTP_USE_COMPRESSED_UPLOAD;
   });
+  const [sftpAutoOpenSidebar, setSftpAutoOpenSidebar] = useState<boolean>(() => {
+    const stored = readStoredString(STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR);
+    return stored === 'true' ? true : DEFAULT_SFTP_AUTO_OPEN_SIDEBAR;
+  });
 
   // Editor Settings
   const [editorWordWrap, setEditorWordWrapState] = useState<boolean>(() => {
@@ -264,11 +274,25 @@ export const useSettingsState = () => {
     if (stored === null) return true;
     return stored === 'true';
   });
+  const [autoUpdateEnabled, setAutoUpdateEnabled] = useState<boolean>(() => {
+    const stored = readStoredString(STORAGE_KEY_AUTO_UPDATE_ENABLED);
+    if (stored === null) return true; // Default to enabled
+    return stored === 'true';
+  });
   const [hotkeyRegistrationError, setHotkeyRegistrationError] = useState<string | null>(null);
+  const [globalHotkeyEnabled, setGlobalHotkeyEnabled] = useState<boolean>(() => {
+    const stored = readStoredString(STORAGE_KEY_GLOBAL_HOTKEY_ENABLED);
+    if (stored === null) return true; // Default to enabled
+    return stored === 'true';
+  });
   const incomingTerminalSettingsSignatureRef = useRef<string | null>(null);
   const localTerminalSettingsVersionRef = useRef(0);
   const broadcastedLocalTerminalSettingsVersionRef = useRef(0);
 
+  // Fix 1: Mount guard — skip redundant IPC broadcasts & localStorage writes on initial mount.
+  // Set to true by the LAST useEffect declaration; all persist effects see false on first render.
+  const persistMountedRef = useRef(false);
+
   const setTerminalSettings = useCallback((nextValue: SetStateAction<TerminalSettings>) => {
     setTerminalSettingsState((prev) => {
       const candidate = typeof nextValue === 'function'
@@ -304,6 +328,21 @@ export const useSettingsState = () => {
     }
   }, []);
 
+  const [immersiveMode, setImmersiveModeState] = useState<boolean>(() => {
+    const stored = localStorageAdapter.readString(STORAGE_KEY_IMMERSIVE_MODE);
+    if (stored === null || stored === '') {
+      // Persist default so collectSyncableSettings() can include it
+      localStorageAdapter.writeString(STORAGE_KEY_IMMERSIVE_MODE, 'true');
+      return true;
+    }
+    return stored === 'true';
+  });
+  const setImmersiveMode = useCallback((enabled: boolean) => {
+    setImmersiveModeState(enabled);
+    localStorageAdapter.writeString(STORAGE_KEY_IMMERSIVE_MODE, String(enabled));
+    notifySettingsChanged(STORAGE_KEY_IMMERSIVE_MODE, enabled);
+  }, [notifySettingsChanged]);
+
   const syncAppearanceFromStorage = useCallback(() => {
     const storedTheme = readStoredString(STORAGE_KEY_THEME);
     const nextTheme = storedTheme && isValidTheme(storedTheme) ? storedTheme : theme;
@@ -316,6 +355,17 @@ export const useSettingsState = () => {
     const storedAccent = readStoredString(STORAGE_KEY_COLOR);
     const nextAccent = storedAccent && isValidHslToken(storedAccent) ? storedAccent.trim() : customAccent;
 
+    // Fix 2: Skip expensive DOM operations if nothing actually changed
+    if (
+      nextTheme === theme &&
+      nextLightId === lightUiThemeId &&
+      nextDarkId === darkUiThemeId &&
+      nextAccentMode === accentMode &&
+      nextAccent === customAccent
+    ) {
+      return;
+    }
+
     setTheme(nextTheme);
     setLightUiThemeId(nextLightId);
     setDarkUiThemeId(nextDarkId);
@@ -332,6 +382,70 @@ export const useSettingsState = () => {
     setCustomCSS((prev) => (prev === storedCss ? prev : storedCss));
   }, []);
 
+  const rehydrateAllFromStorage = useCallback(() => {
+    // Theme & appearance (already have helper)
+    syncAppearanceFromStorage();
+    syncCustomCssFromStorage();
+
+    // UI Font
+    const storedFont = readStoredString(STORAGE_KEY_UI_FONT_FAMILY);
+    if (storedFont) setUiFontFamilyId(storedFont);
+
+    // Language
+    const storedLang = readStoredString(STORAGE_KEY_UI_LANGUAGE);
+    if (storedLang) setUiLanguage(storedLang as UILanguage);
+
+    // Terminal
+    const storedTermTheme = readStoredString(STORAGE_KEY_TERM_THEME);
+    if (storedTermTheme) setTerminalThemeId(storedTermTheme);
+    const storedTermFont = readStoredString(STORAGE_KEY_TERM_FONT_FAMILY);
+    if (storedTermFont) setTerminalFontFamilyId(storedTermFont);
+    const storedTermSize = localStorageAdapter.readNumber(STORAGE_KEY_TERM_FONT_SIZE);
+    if (storedTermSize != null) setTerminalFontSize(storedTermSize);
+    const storedTermSettings = readStoredString(STORAGE_KEY_TERM_SETTINGS);
+    if (storedTermSettings) {
+      try {
+        const parsed = JSON.parse(storedTermSettings);
+        setTerminalSettings(parsed);
+      } catch { /* ignore */ }
+    }
+
+    // Keyboard
+    const storedKb = readStoredString(STORAGE_KEY_CUSTOM_KEY_BINDINGS);
+    if (storedKb) {
+      try {
+        setCustomKeyBindings(JSON.parse(storedKb));
+      } catch { /* ignore */ }
+    }
+
+    // Editor
+    const storedWrap = readStoredString(STORAGE_KEY_EDITOR_WORD_WRAP);
+    if (storedWrap === 'true' || storedWrap === 'false') setEditorWordWrapState(storedWrap === 'true');
+
+    // SFTP
+    const storedDblClick = readStoredString(STORAGE_KEY_SFTP_DOUBLE_CLICK_BEHAVIOR);
+    if (storedDblClick === 'open' || storedDblClick === 'transfer') setSftpDoubleClickBehavior(storedDblClick);
+    const storedAutoSync = readStoredString(STORAGE_KEY_SFTP_AUTO_SYNC);
+    if (storedAutoSync === 'true' || storedAutoSync === 'false') setSftpAutoSync(storedAutoSync === 'true');
+    const storedHidden = readStoredString(STORAGE_KEY_SFTP_SHOW_HIDDEN_FILES);
+    if (storedHidden === 'true' || storedHidden === 'false') setSftpShowHiddenFiles(storedHidden === 'true');
+    const storedCompress = readStoredString(STORAGE_KEY_SFTP_USE_COMPRESSED_UPLOAD);
+    if (storedCompress === 'true' || storedCompress === 'false') setSftpUseCompressedUpload(storedCompress === 'true');
+    const storedAutoOpenSidebar = readStoredString(STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR);
+    if (storedAutoOpenSidebar === 'true' || storedAutoOpenSidebar === 'false') setSftpAutoOpenSidebar(storedAutoOpenSidebar === 'true');
+
+    // Immersive mode
+    const storedImmersive = readStoredString(STORAGE_KEY_IMMERSIVE_MODE);
+    if (storedImmersive === 'true' || storedImmersive === 'false') {
+      const val = storedImmersive === 'true';
+      setImmersiveModeState(val);
+      notifySettingsChanged(STORAGE_KEY_IMMERSIVE_MODE, val);
+    }
+
+    // Custom terminal themes
+    customThemeStore.loadFromStorage();
+  }, [syncAppearanceFromStorage, syncCustomCssFromStorage, setTerminalSettings, notifySettingsChanged]);
+
   useLayoutEffect(() => {
     const tokens = getUiThemeById(resolvedTheme, resolvedTheme === 'dark' ? darkUiThemeId : lightUiThemeId).tokens;
     applyThemeTokens(theme, resolvedTheme, tokens, accentMode, customAccent);
@@ -340,12 +454,11 @@ export const useSettingsState = () => {
     localStorageAdapter.writeString(STORAGE_KEY_UI_THEME_DARK, darkUiThemeId);
     localStorageAdapter.writeString(STORAGE_KEY_ACCENT_MODE, accentMode);
     localStorageAdapter.writeString(STORAGE_KEY_COLOR, customAccent);
-    // Notify other windows
+    // Fix 1: Skip IPC broadcast on initial mount (values already match localStorage)
+    if (!persistMountedRef.current) return;
+    // Fix 3: Send a single IPC instead of 5 — the receiver calls syncAppearanceFromStorage()
+    // which re-reads ALL appearance values from localStorage.
     notifySettingsChanged(STORAGE_KEY_THEME, theme);
-    notifySettingsChanged(STORAGE_KEY_UI_THEME_LIGHT, lightUiThemeId);
-    notifySettingsChanged(STORAGE_KEY_UI_THEME_DARK, darkUiThemeId);
-    notifySettingsChanged(STORAGE_KEY_ACCENT_MODE, accentMode);
-    notifySettingsChanged(STORAGE_KEY_COLOR, customAccent);
   }, [theme, resolvedTheme, lightUiThemeId, darkUiThemeId, accentMode, customAccent, notifySettingsChanged]);
 
   // Listen for OS color scheme changes to keep systemPreference in sync
@@ -363,7 +476,10 @@ export const useSettingsState = () => {
     localStorageAdapter.writeString(STORAGE_KEY_UI_LANGUAGE, uiLanguage);
     document.documentElement.lang = uiLanguage;
     netcattyBridge.get()?.setLanguage?.(uiLanguage);
-    notifySettingsChanged(STORAGE_KEY_UI_LANGUAGE, uiLanguage);
+    // Fix 1: Skip IPC broadcast on initial mount
+    if (persistMountedRef.current) {
+      notifySettingsChanged(STORAGE_KEY_UI_LANGUAGE, uiLanguage);
+    }
   }, [uiLanguage, notifySettingsChanged]);
 
   // Apply and persist UI font family
@@ -372,7 +488,10 @@ export const useSettingsState = () => {
     const font = uiFontStore.getFontById(uiFontFamilyId);
     document.documentElement.style.setProperty('--font-sans', font.family);
     localStorageAdapter.writeString(STORAGE_KEY_UI_FONT_FAMILY, uiFontFamilyId);
-    notifySettingsChanged(STORAGE_KEY_UI_FONT_FAMILY, uiFontFamilyId);
+    // Fix 1: Skip IPC broadcast on initial mount
+    if (persistMountedRef.current) {
+      notifySettingsChanged(STORAGE_KEY_UI_FONT_FAMILY, uiFontFamilyId);
+    }
   }, [uiFontFamilyId, uiFontsLoaded, notifySettingsChanged]);
 
   // Listen for settings changes from other windows via IPC
@@ -457,6 +576,18 @@ export const useSettingsState = () => {
       if (key === STORAGE_KEY_HOTKEY_RECORDING && typeof value === 'boolean') {
         setIsHotkeyRecordingState(value);
       }
+      if (key === STORAGE_KEY_GLOBAL_HOTKEY_ENABLED && typeof value === 'boolean') {
+        setGlobalHotkeyEnabled((prev) => (prev === value ? prev : value));
+      }
+      if (key === STORAGE_KEY_AUTO_UPDATE_ENABLED && typeof value === 'boolean') {
+        setAutoUpdateEnabled((prev) => (prev === value ? prev : value));
+      }
+      if (key === STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR && typeof value === 'boolean') {
+        setSftpAutoOpenSidebar((prev) => (prev === value ? prev : value));
+      }
+      if (key === STORAGE_KEY_IMMERSIVE_MODE && typeof value === 'boolean') {
+        setImmersiveModeState((prev) => (prev === value ? prev : value));
+      }
     });
     return () => {
       try {
@@ -484,53 +615,76 @@ export const useSettingsState = () => {
     };
   }, []);
 
+  // Fix 4: Keep a ref snapshot of current settings so the storage event handler
+  // can compare without capturing 25+ state variables in its closure / dep array.
+  // This avoids constant listener detach/reattach on every state change.
+  const settingsSnapshotRef = useRef({
+    theme, lightUiThemeId, darkUiThemeId, accentMode, customAccent,
+    customCSS, uiFontFamilyId, hotkeyScheme, uiLanguage,
+    terminalThemeId, terminalFontFamilyId, terminalFontSize,
+    sftpDoubleClickBehavior, sftpAutoSync, sftpShowHiddenFiles,
+    sftpUseCompressedUpload, sftpAutoOpenSidebar,
+    editorWordWrap, sessionLogsEnabled, sessionLogsDir, sessionLogsFormat,
+    globalHotkeyEnabled, autoUpdateEnabled, immersiveMode,
+  });
+  settingsSnapshotRef.current = {
+    theme, lightUiThemeId, darkUiThemeId, accentMode, customAccent,
+    customCSS, uiFontFamilyId, hotkeyScheme, uiLanguage,
+    terminalThemeId, terminalFontFamilyId, terminalFontSize,
+    sftpDoubleClickBehavior, sftpAutoSync, sftpShowHiddenFiles,
+    sftpUseCompressedUpload, sftpAutoOpenSidebar,
+    editorWordWrap, sessionLogsEnabled, sessionLogsDir, sessionLogsFormat,
+    globalHotkeyEnabled, autoUpdateEnabled, immersiveMode,
+  };
+
   // Listen for storage changes from other windows (cross-window sync)
   useEffect(() => {
     const handleStorageChange = (e: StorageEvent) => {
+      const s = settingsSnapshotRef.current;
       if (e.key === STORAGE_KEY_THEME && e.newValue) {
-        if (isValidTheme(e.newValue) && e.newValue !== theme) {
+        if (isValidTheme(e.newValue) && e.newValue !== s.theme) {
           setTheme(e.newValue);
         }
       }
       if (e.key === STORAGE_KEY_UI_THEME_LIGHT && e.newValue) {
-        if (isValidUiThemeId('light', e.newValue) && e.newValue !== lightUiThemeId) {
+        if (isValidUiThemeId('light', e.newValue) && e.newValue !== s.lightUiThemeId) {
           setLightUiThemeId(e.newValue);
         }
       }
       if (e.key === STORAGE_KEY_UI_THEME_DARK && e.newValue) {
-        if (isValidUiThemeId('dark', e.newValue) && e.newValue !== darkUiThemeId) {
+        if (isValidUiThemeId('dark', e.newValue) && e.newValue !== s.darkUiThemeId) {
           setDarkUiThemeId(e.newValue);
         }
       }
       if (e.key === STORAGE_KEY_ACCENT_MODE && e.newValue) {
-        if ((e.newValue === 'theme' || e.newValue === 'custom') && e.newValue !== accentMode) {
+        if ((e.newValue === 'theme' || e.newValue === 'custom') && e.newValue !== s.accentMode) {
           setAccentMode(e.newValue);
         }
       }
       if (e.key === STORAGE_KEY_COLOR && e.newValue) {
-        if (isValidHslToken(e.newValue) && e.newValue !== customAccent) {
+        if (isValidHslToken(e.newValue) && e.newValue !== s.customAccent) {
           setCustomAccent(e.newValue.trim());
         }
       }
       if (e.key === STORAGE_KEY_CUSTOM_CSS && e.newValue !== null) {
-        if (e.newValue !== customCSS) {
+        if (e.newValue !== s.customCSS) {
           setCustomCSS(e.newValue);
         }
       }
       if (e.key === STORAGE_KEY_UI_FONT_FAMILY && e.newValue) {
-        if (isValidUiFontId(e.newValue) && e.newValue !== uiFontFamilyId) {
+        if (isValidUiFontId(e.newValue) && e.newValue !== s.uiFontFamilyId) {
           setUiFontFamilyId(e.newValue);
         }
       }
       if (e.key === STORAGE_KEY_HOTKEY_SCHEME && e.newValue) {
         const newScheme = e.newValue as HotkeyScheme;
-        if (newScheme !== hotkeyScheme) {
+        if (newScheme !== s.hotkeyScheme) {
           setHotkeyScheme(newScheme);
         }
       }
       if (e.key === STORAGE_KEY_UI_LANGUAGE && e.newValue) {
         const next = resolveSupportedLocale(e.newValue);
-        if (next !== uiLanguage) {
+        if (next !== s.uiLanguage) {
           setUiLanguage(next as UILanguage);
         }
       }
@@ -553,64 +707,64 @@ export const useSettingsState = () => {
       }
       // Sync terminal theme from other windows
       if (e.key === STORAGE_KEY_TERM_THEME && e.newValue) {
-        if (e.newValue !== terminalThemeId) {
+        if (e.newValue !== s.terminalThemeId) {
           setTerminalThemeId(e.newValue);
         }
       }
       // Sync terminal font family from other windows
       if (e.key === STORAGE_KEY_TERM_FONT_FAMILY && e.newValue) {
-        if (e.newValue !== terminalFontFamilyId) {
+        if (e.newValue !== s.terminalFontFamilyId) {
           setTerminalFontFamilyId(e.newValue);
         }
       }
       // Sync terminal font size from other windows
       if (e.key === STORAGE_KEY_TERM_FONT_SIZE && e.newValue) {
         const newSize = parseInt(e.newValue, 10);
-        if (!isNaN(newSize) && newSize !== terminalFontSize) {
+        if (!isNaN(newSize) && newSize !== s.terminalFontSize) {
           setTerminalFontSize(newSize);
         }
       }
       // Sync SFTP double-click behavior from other windows
       if (e.key === STORAGE_KEY_SFTP_DOUBLE_CLICK_BEHAVIOR && e.newValue) {
-        if ((e.newValue === 'open' || e.newValue === 'transfer') && e.newValue !== sftpDoubleClickBehavior) {
+        if ((e.newValue === 'open' || e.newValue === 'transfer') && e.newValue !== s.sftpDoubleClickBehavior) {
           setSftpDoubleClickBehavior(e.newValue);
         }
       }
       // Sync SFTP auto-sync setting from other windows
       if (e.key === STORAGE_KEY_SFTP_AUTO_SYNC && e.newValue !== null) {
         const newValue = e.newValue === 'true';
-        if (newValue !== sftpAutoSync) {
+        if (newValue !== s.sftpAutoSync) {
           setSftpAutoSync(newValue);
         }
       }
       // Sync SFTP show hidden files setting from other windows
       if (e.key === STORAGE_KEY_SFTP_SHOW_HIDDEN_FILES && e.newValue !== null) {
         const newValue = e.newValue === 'true';
-        if (newValue !== sftpShowHiddenFiles) {
+        if (newValue !== s.sftpShowHiddenFiles) {
           setSftpShowHiddenFiles(newValue);
         }
       }
       if (e.key === STORAGE_KEY_EDITOR_WORD_WRAP && e.newValue !== null) {
         const newValue = e.newValue === 'true';
-        if (newValue !== editorWordWrap) {
+        if (newValue !== s.editorWordWrap) {
           setEditorWordWrapState(newValue);
         }
       }
       if (e.key === STORAGE_KEY_SESSION_LOGS_ENABLED && e.newValue !== null) {
         const newValue = e.newValue === 'true';
-        if (newValue !== sessionLogsEnabled) {
+        if (newValue !== s.sessionLogsEnabled) {
           setSessionLogsEnabled(newValue);
         }
       }
       if (e.key === STORAGE_KEY_SESSION_LOGS_DIR && e.newValue !== null) {
-        if (e.newValue !== sessionLogsDir) {
+        if (e.newValue !== s.sessionLogsDir) {
           setSessionLogsDir(e.newValue);
         }
       }
       if (e.key === STORAGE_KEY_SESSION_LOGS_FORMAT && e.newValue) {
         if (
           (e.newValue === 'txt' || e.newValue === 'raw' || e.newValue === 'html') &&
-          e.newValue !== sessionLogsFormat
+          e.newValue !== s.sessionLogsFormat
         ) {
           setSessionLogsFormat(e.newValue);
         }
@@ -618,33 +772,65 @@ export const useSettingsState = () => {
       // Sync SFTP compressed upload setting from other windows
       if (e.key === STORAGE_KEY_SFTP_USE_COMPRESSED_UPLOAD && e.newValue !== null) {
         const newValue = e.newValue === 'true' || e.newValue === 'enabled';
-        if (newValue !== sftpUseCompressedUpload) {
+        if (newValue !== s.sftpUseCompressedUpload) {
           setSftpUseCompressedUpload(newValue);
         }
       }
+      // Sync SFTP auto-open sidebar setting from other windows
+      if (e.key === STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR && e.newValue !== null) {
+        const newValue = e.newValue === 'true';
+        if (newValue !== s.sftpAutoOpenSidebar) {
+          setSftpAutoOpenSidebar(newValue);
+        }
+      }
+      // Sync global hotkey enabled setting from other windows
+      if (e.key === STORAGE_KEY_GLOBAL_HOTKEY_ENABLED && e.newValue !== null) {
+        const newValue = e.newValue === 'true';
+        if (newValue !== s.globalHotkeyEnabled) {
+          setGlobalHotkeyEnabled(newValue);
+        }
+      }
+      // Sync auto-update enabled setting from other windows
+      if (e.key === STORAGE_KEY_AUTO_UPDATE_ENABLED && e.newValue !== null) {
+        const newValue = e.newValue === 'true';
+        if (newValue !== s.autoUpdateEnabled) {
+          setAutoUpdateEnabled(newValue);
+        }
+      }
+      // Sync immersive mode from other windows
+      if (e.key === STORAGE_KEY_IMMERSIVE_MODE && e.newValue !== null) {
+        const newValue = e.newValue === 'true';
+        if (newValue !== s.immersiveMode) {
+          setImmersiveModeState(newValue);
+        }
+      }
     };
 
     window.addEventListener('storage', handleStorageChange);
     return () => window.removeEventListener('storage', handleStorageChange);
-  }, [theme, lightUiThemeId, darkUiThemeId, accentMode, customAccent, customCSS, uiFontFamilyId, hotkeyScheme, uiLanguage, terminalThemeId, terminalFontFamilyId, terminalFontSize, sftpDoubleClickBehavior, sftpAutoSync, sftpShowHiddenFiles, sftpUseCompressedUpload, editorWordWrap, sessionLogsEnabled, sessionLogsDir, sessionLogsFormat, mergeIncomingTerminalSettings]);
+  }, [mergeIncomingTerminalSettings]); // Fix 4: stable deps only — state comparisons use settingsSnapshotRef
 
   useEffect(() => {
     localStorageAdapter.writeString(STORAGE_KEY_TERM_THEME, terminalThemeId);
+    if (!persistMountedRef.current) return;
     notifySettingsChanged(STORAGE_KEY_TERM_THEME, terminalThemeId);
   }, [terminalThemeId, notifySettingsChanged]);
 
   useEffect(() => {
     localStorageAdapter.writeString(STORAGE_KEY_TERM_FONT_FAMILY, terminalFontFamilyId);
+    if (!persistMountedRef.current) return;
     notifySettingsChanged(STORAGE_KEY_TERM_FONT_FAMILY, terminalFontFamilyId);
   }, [terminalFontFamilyId, notifySettingsChanged]);
 
   useEffect(() => {
     localStorageAdapter.writeNumber(STORAGE_KEY_TERM_FONT_SIZE, terminalFontSize);
+    if (!persistMountedRef.current) return;
     notifySettingsChanged(STORAGE_KEY_TERM_FONT_SIZE, terminalFontSize);
   }, [terminalFontSize, notifySettingsChanged]);
 
   useEffect(() => {
     localStorageAdapter.write(STORAGE_KEY_TERM_SETTINGS, terminalSettings);
+    if (!persistMountedRef.current) return;
     const currentSignature = serializeTerminalSettings(terminalSettings);
     const hasPendingUnbroadcastLocalChanges =
       localTerminalSettingsVersionRef.current !== broadcastedLocalTerminalSettingsVersionRef.current;
@@ -659,11 +845,13 @@ export const useSettingsState = () => {
 
   useEffect(() => {
     localStorageAdapter.writeString(STORAGE_KEY_HOTKEY_SCHEME, hotkeyScheme);
+    if (!persistMountedRef.current) return;
     notifySettingsChanged(STORAGE_KEY_HOTKEY_SCHEME, hotkeyScheme);
   }, [hotkeyScheme, notifySettingsChanged]);
 
   useEffect(() => {
     localStorageAdapter.write(STORAGE_KEY_CUSTOM_KEY_BINDINGS, customKeyBindings);
+    if (!persistMountedRef.current) return;
     notifySettingsChanged(STORAGE_KEY_CUSTOM_KEY_BINDINGS, customKeyBindings);
   }, [customKeyBindings, notifySettingsChanged]);
 
@@ -674,10 +862,7 @@ export const useSettingsState = () => {
 
   // Apply and persist custom CSS
   useEffect(() => {
-    localStorageAdapter.writeString(STORAGE_KEY_CUSTOM_CSS, customCSS);
-    notifySettingsChanged(STORAGE_KEY_CUSTOM_CSS, customCSS);
-
-    // Apply custom CSS to document
+    // Always apply CSS to document (needed on mount)
     let styleEl = document.getElementById('netcatty-custom-css') as HTMLStyleElement | null;
     if (!styleEl) {
       styleEl = document.createElement('style');
@@ -685,56 +870,72 @@ export const useSettingsState = () => {
       document.head.appendChild(styleEl);
     }
     styleEl.textContent = customCSS;
+    localStorageAdapter.writeString(STORAGE_KEY_CUSTOM_CSS, customCSS);
+    // Skip IPC on initial mount
+    if (!persistMountedRef.current) return;
+    notifySettingsChanged(STORAGE_KEY_CUSTOM_CSS, customCSS);
   }, [customCSS, notifySettingsChanged]);
 
   // Persist SFTP double-click behavior
   useEffect(() => {
     localStorageAdapter.writeString(STORAGE_KEY_SFTP_DOUBLE_CLICK_BEHAVIOR, sftpDoubleClickBehavior);
+    if (!persistMountedRef.current) return;
     notifySettingsChanged(STORAGE_KEY_SFTP_DOUBLE_CLICK_BEHAVIOR, sftpDoubleClickBehavior);
   }, [sftpDoubleClickBehavior, notifySettingsChanged]);
 
   // Persist SFTP auto-sync setting
   useEffect(() => {
     localStorageAdapter.writeString(STORAGE_KEY_SFTP_AUTO_SYNC, sftpAutoSync ? 'true' : 'false');
+    if (!persistMountedRef.current) return;
     notifySettingsChanged(STORAGE_KEY_SFTP_AUTO_SYNC, sftpAutoSync);
   }, [sftpAutoSync, notifySettingsChanged]);
 
   // Persist SFTP show hidden files setting
   useEffect(() => {
     localStorageAdapter.writeString(STORAGE_KEY_SFTP_SHOW_HIDDEN_FILES, sftpShowHiddenFiles ? 'true' : 'false');
+    if (!persistMountedRef.current) return;
     notifySettingsChanged(STORAGE_KEY_SFTP_SHOW_HIDDEN_FILES, sftpShowHiddenFiles);
   }, [sftpShowHiddenFiles, notifySettingsChanged]);
 
   // Persist SFTP compressed upload setting
   useEffect(() => {
     localStorageAdapter.writeString(STORAGE_KEY_SFTP_USE_COMPRESSED_UPLOAD, sftpUseCompressedUpload ? 'true' : 'false');
+    if (!persistMountedRef.current) return;
     notifySettingsChanged(STORAGE_KEY_SFTP_USE_COMPRESSED_UPLOAD, sftpUseCompressedUpload);
   }, [sftpUseCompressedUpload, notifySettingsChanged]);
 
+  // Persist SFTP auto-open sidebar setting
+  useEffect(() => {
+    localStorageAdapter.writeString(STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR, sftpAutoOpenSidebar ? 'true' : 'false');
+    if (!persistMountedRef.current) return;
+    notifySettingsChanged(STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR, sftpAutoOpenSidebar);
+  }, [sftpAutoOpenSidebar, notifySettingsChanged]);
+
   // Persist Session Logs settings
   useEffect(() => {
     localStorageAdapter.writeString(STORAGE_KEY_SESSION_LOGS_ENABLED, sessionLogsEnabled ? 'true' : 'false');
+    if (!persistMountedRef.current) return;
     notifySettingsChanged(STORAGE_KEY_SESSION_LOGS_ENABLED, sessionLogsEnabled);
   }, [sessionLogsEnabled, notifySettingsChanged]);
 
   useEffect(() => {
     localStorageAdapter.writeString(STORAGE_KEY_SESSION_LOGS_DIR, sessionLogsDir);
+    if (!persistMountedRef.current) return;
     notifySettingsChanged(STORAGE_KEY_SESSION_LOGS_DIR, sessionLogsDir);
   }, [sessionLogsDir, notifySettingsChanged]);
 
   useEffect(() => {
     localStorageAdapter.writeString(STORAGE_KEY_SESSION_LOGS_FORMAT, sessionLogsFormat);
+    if (!persistMountedRef.current) return;
     notifySettingsChanged(STORAGE_KEY_SESSION_LOGS_FORMAT, sessionLogsFormat);
   }, [sessionLogsFormat, notifySettingsChanged]);
 
   // Persist and sync toggle window hotkey setting
   useEffect(() => {
-    localStorageAdapter.writeString(STORAGE_KEY_TOGGLE_WINDOW_HOTKEY, toggleWindowHotkey);
-    notifySettingsChanged(STORAGE_KEY_TOGGLE_WINDOW_HOTKEY, toggleWindowHotkey);
-    // Register/unregister the global hotkey in main process
+    // Register/unregister the global hotkey in main process (needed on mount)
     const bridge = netcattyBridge.get();
     if (bridge?.registerGlobalHotkey) {
-      if (toggleWindowHotkey) {
+      if (toggleWindowHotkey && globalHotkeyEnabled) {
         setHotkeyRegistrationError(null);
         bridge
           .registerGlobalHotkey(toggleWindowHotkey)
@@ -755,21 +956,71 @@ export const useSettingsState = () => {
         });
       }
     }
-  }, [toggleWindowHotkey, notifySettingsChanged]);
+    localStorageAdapter.writeString(STORAGE_KEY_TOGGLE_WINDOW_HOTKEY, toggleWindowHotkey);
+    // Skip IPC on initial mount
+    if (!persistMountedRef.current) return;
+    notifySettingsChanged(STORAGE_KEY_TOGGLE_WINDOW_HOTKEY, toggleWindowHotkey);
+  }, [toggleWindowHotkey, globalHotkeyEnabled, notifySettingsChanged]);
+
+  // Persist global hotkey enabled setting
+  useEffect(() => {
+    localStorageAdapter.writeString(STORAGE_KEY_GLOBAL_HOTKEY_ENABLED, globalHotkeyEnabled ? 'true' : 'false');
+    if (!persistMountedRef.current) return;
+    notifySettingsChanged(STORAGE_KEY_GLOBAL_HOTKEY_ENABLED, globalHotkeyEnabled);
+  }, [globalHotkeyEnabled, notifySettingsChanged]);
 
   // Persist and sync close to tray setting
   useEffect(() => {
-    localStorageAdapter.writeString(STORAGE_KEY_CLOSE_TO_TRAY, closeToTray ? 'true' : 'false');
-    notifySettingsChanged(STORAGE_KEY_CLOSE_TO_TRAY, closeToTray);
-    // Update main process tray behavior
+    // Update main process tray behavior (needed on mount)
     const bridge = netcattyBridge.get();
     if (bridge?.setCloseToTray) {
       bridge.setCloseToTray(closeToTray).catch((err) => {
         console.warn('[SystemTray] Failed to set close-to-tray:', err);
       });
     }
+    localStorageAdapter.writeString(STORAGE_KEY_CLOSE_TO_TRAY, closeToTray ? 'true' : 'false');
+    // Skip IPC on initial mount
+    if (!persistMountedRef.current) return;
+    notifySettingsChanged(STORAGE_KEY_CLOSE_TO_TRAY, closeToTray);
   }, [closeToTray, notifySettingsChanged]);
 
+  // Hydrate auto-update state from the main-process preference file on mount.
+  // This reconciles localStorage (renderer) with auto-update-pref.json (main)
+  // in case localStorage was cleared or is stale.
+  useEffect(() => {
+    const bridge = netcattyBridge.get();
+    void bridge?.getAutoUpdate?.().then((result) => {
+      if (result && typeof result.enabled === 'boolean') {
+        setAutoUpdateEnabled((prev) => {
+          if (prev === result.enabled) return prev;
+          // Sync localStorage with the main-process truth
+          localStorageAdapter.writeString(STORAGE_KEY_AUTO_UPDATE_ENABLED, result.enabled ? 'true' : 'false');
+          return result.enabled;
+        });
+      }
+    }).catch(() => { /* bridge unavailable */ });
+  }, []);
+
+  // Persist auto-update enabled setting.
+  // Initial mount still writes localStorage, but skips cross-window/main-process IPC.
+  useEffect(() => {
+    localStorageAdapter.writeString(STORAGE_KEY_AUTO_UPDATE_ENABLED, autoUpdateEnabled ? 'true' : 'false');
+    if (!persistMountedRef.current) return;
+    notifySettingsChanged(STORAGE_KEY_AUTO_UPDATE_ENABLED, autoUpdateEnabled);
+    // Notify main process on user-initiated changes
+    const bridge = netcattyBridge.get();
+    bridge?.setAutoUpdate?.(autoUpdateEnabled).catch((err: unknown) => {
+      console.warn('[AutoUpdate] Failed to set auto-update:', err);
+    });
+  }, [autoUpdateEnabled, notifySettingsChanged]);
+
+  // Fix 1: Mark all persist effects as mounted.
+  // This MUST be declared AFTER all persist useEffects so that React runs it last
+  // during the initial mount cycle (effects fire in declaration order).
+  useEffect(() => {
+    persistMountedRef.current = true;
+  }, []);
+
   // Get merged key bindings (defaults + custom overrides)
   const keyBindings = useMemo((): KeyBinding[] => {
     return DEFAULT_KEY_BINDINGS.map(binding => {
@@ -832,11 +1083,6 @@ export const useSettingsState = () => {
     [terminalThemeId, customThemes]
   );
 
-  const currentTerminalFont = useMemo(
-    () => availableFonts.find(f => f.id === terminalFontFamilyId) || availableFonts[0],
-    [terminalFontFamilyId, availableFonts]
-  );
-
   const updateTerminalSetting = useCallback(<K extends keyof TerminalSettings>(
     key: K,
     value: TerminalSettings[K]
@@ -844,6 +1090,12 @@ export const useSettingsState = () => {
     setTerminalSettings(prev => ({ ...prev, [key]: value }));
   }, [setTerminalSettings]);
 
+  /** Re-apply the current UI theme tokens (used to restore after immersive mode override). */
+  const reapplyCurrentTheme = useCallback(() => {
+    const tokens = getUiThemeById(resolvedTheme, resolvedTheme === 'dark' ? darkUiThemeId : lightUiThemeId).tokens;
+    applyThemeTokens(theme, resolvedTheme, tokens, accentMode, customAccent);
+  }, [theme, resolvedTheme, lightUiThemeId, darkUiThemeId, accentMode, customAccent]);
+
   return {
     theme,
     setTheme,
@@ -867,7 +1119,6 @@ export const useSettingsState = () => {
     currentTerminalTheme,
     terminalFontFamilyId,
     setTerminalFontFamilyId,
-    currentTerminalFont,
     terminalFontSize,
     setTerminalFontSize,
     terminalSettings,
@@ -892,6 +1143,8 @@ export const useSettingsState = () => {
     setSftpShowHiddenFiles,
     sftpUseCompressedUpload,
     setSftpUseCompressedUpload,
+    sftpAutoOpenSidebar,
+    setSftpAutoOpenSidebar,
     // Editor Settings
     editorWordWrap,
     setEditorWordWrap: useCallback((enabled: boolean) => {
@@ -899,7 +1152,6 @@ export const useSettingsState = () => {
       localStorageAdapter.writeString(STORAGE_KEY_EDITOR_WORD_WRAP, String(enabled));
       notifySettingsChanged(STORAGE_KEY_EDITOR_WORD_WRAP, enabled);
     }, [notifySettingsChanged]),
-    availableFonts,
     // Session Logs
     sessionLogsEnabled,
     setSessionLogsEnabled,
@@ -912,6 +1164,24 @@ export const useSettingsState = () => {
     setToggleWindowHotkey,
     closeToTray,
     setCloseToTray,
+    autoUpdateEnabled,
+    setAutoUpdateEnabled,
     hotkeyRegistrationError,
+    globalHotkeyEnabled,
+    setGlobalHotkeyEnabled,
+    rehydrateAllFromStorage,
+    reapplyCurrentTheme,
+    immersiveMode,
+    setImmersiveMode,
+    // Opaque version that changes when any synced setting changes, used by useAutoSync.
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+    settingsVersion: useMemo(() => Math.random(), [
+      theme, lightUiThemeId, darkUiThemeId, accentMode, customAccent,
+      uiFontFamilyId, uiLanguage, customCSS,
+      terminalThemeId, terminalFontFamilyId, terminalFontSize, terminalSettings,
+      customKeyBindings, editorWordWrap,
+      sftpDoubleClickBehavior, sftpAutoSync, sftpShowHiddenFiles, sftpUseCompressedUpload, sftpAutoOpenSidebar,
+      customThemes, immersiveMode,
+    ]),
   };
 };

application/state/useSftpBackend.ts

@@ -197,6 +197,12 @@ export const useSftpBackend = () => {
     return bridge.showSaveDialog(defaultPath, filters);
   }, []);
 
+  const selectDirectory = async (title?: string, defaultPath?: string) => {
+    const bridge = netcattyBridge.get();
+    if (!bridge?.selectDirectory) return null;
+    return bridge.selectDirectory(title, defaultPath);
+  };
+
   const downloadSftpToTempAndOpen = useCallback(async (
     sftpId: string,
     remotePath: string,
@@ -210,9 +216,7 @@ export const useSftpBackend = () => {
     }
     
     // Download the file to temp
-    console.log("[SFTPBackend] Downloading file to temp", { sftpId, remotePath, fileName });
     const tempPath = await bridge.downloadSftpToTemp(sftpId, remotePath, fileName, options?.encoding);
-    console.log("[SFTPBackend] File downloaded to temp", { tempPath });
     
     // Register temp file for cleanup when SFTP session closes (regardless of auto-sync setting)
     if (bridge.registerTempFile) {
@@ -224,25 +228,18 @@ export const useSftpBackend = () => {
     }
     
     // Open with the selected application
-    console.log("[SFTPBackend] Opening with application", { tempPath, appPath });
     await bridge.openWithApplication(tempPath, appPath);
-    console.log("[SFTPBackend] Application launched");
     
     // Start file watching if enabled
     let watchId: string | undefined;
-    console.log("[SFTPBackend] Auto-sync enabled check", { enableWatch: options?.enableWatch, hasStartFileWatch: !!bridge.startFileWatch });
     if (options?.enableWatch && bridge.startFileWatch) {
       try {
-        console.log("[SFTPBackend] Starting file watch", { tempPath, remotePath, sftpId });
         const result = await bridge.startFileWatch(tempPath, remotePath, sftpId, options?.encoding);
         watchId = result.watchId;
-        console.log("[SFTPBackend] File watch started successfully", { watchId, tempPath, remotePath });
       } catch (err) {
         console.warn("[SFTPBackend] Failed to start file watch:", err);
         // Don't fail the operation if watching fails
       }
-    } else {
-      console.log("[SFTPBackend] File watching not enabled or not available");
     }
     
     return { localTempPath: tempPath, watchId };
@@ -278,6 +275,7 @@ export const useSftpBackend = () => {
     onTransferProgress,
     selectApplication,
     showSaveDialog,
+    selectDirectory,
     downloadSftpToTempAndOpen,
   };
 };

application/state/useSftpFileAssociations.ts

@@ -25,7 +25,6 @@ let snapshotRef: { associations: FileAssociationsMap } = { associations: {} };
 
 function loadFromStorage(): FileAssociationsMap {
   const stored = localStorageAdapter.read<FileAssociationsMap>(STORAGE_KEY_SFTP_FILE_ASSOCIATIONS);
-  console.log('[SftpFileAssociations] Loading from storage:', stored);
   if (stored) {
     const migrated: FileAssociationsMap = {};
     for (const [ext, value] of Object.entries(stored)) {
@@ -35,7 +34,6 @@ function loadFromStorage(): FileAssociationsMap {
         migrated[ext] = value as FileAssociationEntry;
       }
     }
-    console.log('[SftpFileAssociations] Migrated associations:', migrated);
     return migrated;
   }
   return {};
@@ -45,19 +43,13 @@ function loadFromStorage(): FileAssociationsMap {
 snapshotRef = { associations: loadFromStorage() };
 
 function saveToStorage(associations: FileAssociationsMap) {
-  console.log('[SftpFileAssociations] saveToStorage called with:', associations);
   localStorageAdapter.write(STORAGE_KEY_SFTP_FILE_ASSOCIATIONS, associations);
-  // Verify it was saved
-  const verify = localStorageAdapter.read(STORAGE_KEY_SFTP_FILE_ASSOCIATIONS);
-  console.log('[SftpFileAssociations] Verification read from storage:', verify);
 }
 
 function updateAssociations(newAssociations: FileAssociationsMap) {
-  console.log('[SftpFileAssociations] Updating associations:', newAssociations);
   // Create new reference so useSyncExternalStore detects change
   snapshotRef = { associations: newAssociations };
   saveToStorage(newAssociations);
-  console.log('[SftpFileAssociations] Notifying', subscribers.size, 'subscribers');
   subscribers.forEach(callback => callback());
 }
 
@@ -101,8 +93,6 @@ export function useSftpFileAssociations() {
     openerType: FileOpenerType,
     systemApp?: SystemAppInfo
   ) => {
-    console.log('[SftpFileAssociations] setOpenerForExtension called with:', { extension, openerType, systemApp });
-    console.log('[SftpFileAssociations] Current associations before update:', snapshotRef.associations);
     updateAssociations({
       ...snapshotRef.associations,
       [extension.toLowerCase()]: { openerType, systemApp },
@@ -122,13 +112,11 @@ export function useSftpFileAssociations() {
    * Get all associations as an array
    */
   const getAllAssociations = useCallback((): FileAssociation[] => {
-    const result = Object.entries(associations).map(([extension, entry]: [string, FileAssociationEntry]) => ({
+    return Object.entries(associations).map(([extension, entry]: [string, FileAssociationEntry]) => ({
       extension,
       openerType: entry.openerType,
       systemApp: entry.systemApp,
     }));
-    console.log('[SftpFileAssociations] getAllAssociations called, returning', result.length, 'items:', result);
-    return result;
   }, [associations]);
 
   /**

application/state/useStoredNumber.ts

@@ -0,0 +1,29 @@
+import { useCallback, useState } from "react";
+import { localStorageAdapter } from "../../infrastructure/persistence/localStorageAdapter";
+
+/**
+ * Hook for reading a number from localStorage with lazy persistence.
+ * Unlike useStoredString/useStoredBoolean, this hook does NOT auto-persist
+ * on every state change — call `persist()` explicitly when ready (e.g. on
+ * mouseup after a drag). This avoids flooding localStorage during
+ * high-frequency updates like resize drags.
+ */
+export const useStoredNumber = (
+    storageKey: string,
+    fallback: number,
+    clamp?: { min: number; max: number },
+) => {
+    const [value, setValue] = useState<number>(() => {
+        const stored = localStorageAdapter.readNumber(storageKey);
+        if (stored === null) return fallback;
+        if (clamp) return Math.max(clamp.min, Math.min(clamp.max, stored));
+        return stored;
+    });
+
+    const persist = useCallback(
+        (v: number) => localStorageAdapter.writeNumber(storageKey, v),
+        [storageKey],
+    );
+
+    return [value, setValue, persist] as const;
+};

application/state/useTerminalBackend.ts

@@ -90,13 +90,13 @@ export const useTerminalBackend = () => {
     return bridge.onSessionData(sessionId, cb);
   }, []);
 
-  const onSessionExit = useCallback((sessionId: string, cb: (evt: { exitCode?: number; signal?: number }) => void) => {
+  const onSessionExit = useCallback((sessionId: string, cb: (evt: { exitCode?: number; signal?: number; error?: string; reason?: "exited" | "error" | "timeout" | "closed" }) => void) => {
     const bridge = netcattyBridge.get();
     if (!bridge?.onSessionExit) throw new Error("onSessionExit unavailable");
     return bridge.onSessionExit(sessionId, cb);
   }, []);
 
-  const onChainProgress = useCallback((cb: (hop: number, total: number, label: string, status: string) => void) => {
+  const onChainProgress = useCallback((cb: (sessionId: string, hop: number, total: number, label: string, status: string, error?: string) => void) => {
     const bridge = netcattyBridge.get();
     return bridge?.onChainProgress?.(cb);
   }, []);

application/state/useUpdateCheck.ts

@@ -1,7 +1,7 @@
 import { useCallback, useEffect, useRef, useState } from 'react';
 import { checkForUpdates, getReleaseUrl, type ReleaseInfo, type UpdateCheckResult } from '../../infrastructure/services/updateService';
 import { localStorageAdapter } from '../../infrastructure/persistence/localStorageAdapter';
-import { STORAGE_KEY_UPDATE_DISMISSED_VERSION, STORAGE_KEY_UPDATE_LAST_CHECK, STORAGE_KEY_UPDATE_LATEST_RELEASE } from '../../infrastructure/config/storageKeys';
+import { STORAGE_KEY_UPDATE_DISMISSED_VERSION, STORAGE_KEY_UPDATE_LAST_CHECK, STORAGE_KEY_UPDATE_LATEST_RELEASE, STORAGE_KEY_AUTO_UPDATE_ENABLED, STORAGE_KEY_DEBUG_UPDATE_DEMO } from '../../infrastructure/config/storageKeys';
 import { netcattyBridge } from '../../infrastructure/services/netcattyBridge';
 
 // Check for updates at most once per hour
@@ -13,15 +13,10 @@ const UPDATE_CHECK_INTERVAL_MS = 60 * 60 * 1000;
 // arrives after 8s the duplicate check is avoided.
 const STARTUP_CHECK_DELAY_MS = 8000;
 // Enable demo mode for development (set via localStorage: localStorage.setItem('debug.updateDemo', '1'))
-const IS_UPDATE_DEMO_MODE = typeof window !== 'undefined' && 
-  window.localStorage?.getItem('debug.updateDemo') === '1';
+const IS_UPDATE_DEMO_MODE = localStorageAdapter.readString(STORAGE_KEY_DEBUG_UPDATE_DEMO) === '1';
 
-// Debug logging for update checks
-const debugLog = (...args: unknown[]) => {
-  if (IS_UPDATE_DEMO_MODE || (typeof window !== 'undefined' && window.localStorage?.getItem('debug.updateCheck') === '1')) {
-    console.log('[UpdateCheck]', ...args);
-  }
-};
+// Debug logging for update checks (no-op in production)
+const debugLog = (..._args: unknown[]) => {};
 
 export type AutoDownloadStatus = 'idle' | 'downloading' | 'ready' | 'error';
 
@@ -48,6 +43,8 @@ export interface UseUpdateCheckResult {
   dismissUpdate: () => void;
   openReleasePage: () => void;
   installUpdate: () => void;
+  startDownload: () => void;
+  isUpdateDemoMode: boolean;
 }
 
 /**
@@ -56,7 +53,13 @@ export interface UseUpdateCheckResult {
  * - Respects dismissed version to avoid nagging
  * - Provides manual check capability
  */
-export function useUpdateCheck(): UseUpdateCheckResult {
+export function useUpdateCheck(options?: { autoUpdateEnabled?: boolean }): UseUpdateCheckResult {
+  // Accept auto-update toggle from the caller (e.g. useSettingsState) so it
+  // reacts immediately in the same window. Falls back to reading localStorage
+  // when no caller provides the value (e.g. in non-settings contexts).
+  const autoUpdateEnabled = options?.autoUpdateEnabled ??
+    (localStorageAdapter.readString(STORAGE_KEY_AUTO_UPDATE_ENABLED) !== 'false');
+
   const [updateState, setUpdateState] = useState<UpdateState>({
     isChecking: false,
     hasUpdate: false,
@@ -136,14 +139,20 @@ export function useUpdateCheck(): UseUpdateCheckResult {
         return;
       }
 
+      // 'available' means an update was found but auto-download is disabled.
+      // Surface the version info (hasUpdate + latestRelease) but keep
+      // autoDownloadStatus at 'idle' so the manual download path shows.
+      const isAvailableOnly = snapshot.status === 'available';
+
       setUpdateState((prev) => {
         // Don't overwrite if the renderer already has a newer state
         if (prev.autoDownloadStatus !== 'idle') return prev;
         return {
           ...prev,
-          autoDownloadStatus: snapshot.status,
-          downloadPercent: snapshot.percent,
-          downloadError: snapshot.error,
+          hasUpdate: isAvailableOnly ? true : prev.hasUpdate,
+          autoDownloadStatus: isAvailableOnly ? 'idle' : snapshot.status,
+          downloadPercent: isAvailableOnly ? 0 : snapshot.percent,
+          downloadError: isAvailableOnly ? null : snapshot.error,
           // Use snapshot version if no release data or if versions differ
           latestRelease: (!prev.latestRelease || (snapshot.version && prev.latestRelease.version !== snapshot.version)) ? (snapshot.version ? {
             version: snapshot.version,
@@ -186,15 +195,18 @@ export function useUpdateCheck(): UseUpdateCheckResult {
       if (isDismissed) {
         dismissedAutoDownloadRef.current = true;
       }
+      // When auto-update is disabled, autoDownload=false in the main process
+      // so no download will start. Don't transition to 'downloading' or the
+      // UI will be stuck at 0%. Keep status idle and let the manual download
+      // link surface instead.
+      const isAutoUpdateOff = localStorageAdapter.readString(STORAGE_KEY_AUTO_UPDATE_ENABLED) === 'false';
+      const shouldTrackDownload = !isDismissed && !isAutoUpdateOff;
       setUpdateState((prev) => ({
         ...prev,
         hasUpdate: !isDismissed,
-        // Only transition to 'downloading' if the user hasn't dismissed this
-        // version — otherwise leave the status at 'idle' so no download
-        // progress/ready toast appears for a release they don't want.
-        autoDownloadStatus: isDismissed ? prev.autoDownloadStatus : 'downloading',
-        downloadPercent: isDismissed ? prev.downloadPercent : 0,
-        downloadError: isDismissed ? prev.downloadError : null,
+        autoDownloadStatus: shouldTrackDownload ? 'downloading' : prev.autoDownloadStatus,
+        downloadPercent: shouldTrackDownload ? 0 : prev.downloadPercent,
+        downloadError: shouldTrackDownload ? null : prev.downloadError,
         // Use electron-updater's version if GitHub API hasn't resolved yet or
         // if the updater reports a different version than the cached release.
         latestRelease: (!prev.latestRelease || prev.latestRelease.version !== info.version) ? {
@@ -439,6 +451,20 @@ export function useUpdateCheck(): UseUpdateCheckResult {
         } else if (res?.checking) {
           // Another check is already in flight — don't change status; the
           // in-flight check will resolve via IPC events.
+        } else if (nextStatus === 'error' && res?.available) {
+          // GitHub API failed but electron-updater found an update.
+          // Respect dismissed versions before surfacing.
+          const dismissed = localStorageAdapter.readString(STORAGE_KEY_UPDATE_DISMISSED_VERSION);
+          if (res.version && res.version === dismissed) {
+            // User dismissed this version — don't re-surface
+          } else {
+            setUpdateState((prev) => ({
+              ...prev,
+              manualCheckStatus: 'available',
+              hasUpdate: true,
+              error: null,
+            }));
+          }
         } else if (nextStatus === 'error' && !res?.error && !res?.available) {
           // GitHub API failed but electron-updater says no update available.
           // Clear the error status so Settings doesn't stay stuck in error state.
@@ -489,6 +515,46 @@ export function useUpdateCheck(): UseUpdateCheckResult {
     netcattyBridge.get()?.installUpdate?.();
   }, []);
 
+  const startDownload = useCallback(async () => {
+    if (autoDownloadStatusRef.current === 'downloading' || autoDownloadStatusRef.current === 'ready') return;
+    const bridge = netcattyBridge.get();
+    try {
+      const checkResult = await bridge?.checkForUpdate?.();
+      if (!checkResult || checkResult.checking === true || checkResult.ready === true || checkResult.downloading === true) return;
+      if (checkResult.supported === false) {
+        openReleasePage();
+        return;
+      }
+      if (checkResult.available === false) {
+        openReleasePage();
+        return;
+      }
+    } catch {
+      return;
+    }
+    setUpdateState((prev) => ({
+      ...prev,
+      autoDownloadStatus: 'downloading',
+      downloadPercent: 0,
+      downloadError: null,
+    }));
+    void bridge?.downloadUpdate?.().then((res) => {
+      if (res && !res.success) {
+        setUpdateState((prev) => ({
+          ...prev,
+          autoDownloadStatus: 'error',
+          downloadError: res.error || 'Download failed',
+        }));
+      }
+    }).catch(() => {
+      setUpdateState((prev) => ({
+        ...prev,
+        autoDownloadStatus: 'error',
+        downloadError: 'Download failed',
+      }));
+    });
+  }, [openReleasePage]);
+
   // Startup check with delay - runs once on mount
   useEffect(() => {
     debugLog('Startup check effect mounted, IS_UPDATE_DEMO_MODE:', IS_UPDATE_DEMO_MODE);
@@ -519,12 +585,12 @@ export function useUpdateCheck(): UseUpdateCheckResult {
     if (IS_UPDATE_DEMO_MODE) {
       return;
     }
-    
-    debugLog('Version check effect', { 
-      hasChecked: hasCheckedOnStartupRef.current, 
+
+    debugLog('Version check effect', {
+      hasChecked: hasCheckedOnStartupRef.current,
       currentVersion: updateState.currentVersion
     });
-    
+
     if (hasCheckedOnStartupRef.current) {
       return;
     }
@@ -533,12 +599,11 @@ export function useUpdateCheck(): UseUpdateCheckResult {
       return;
     }
 
-    // Check if we've checked recently
+    // Hydrate cached release info so update status is visible across windows.
+    // When auto-update is disabled, hydrate release data (for the Settings UI)
+    // but don't set hasUpdate (which would trigger the toast in App.tsx).
     const lastCheck = localStorageAdapter.readNumber(STORAGE_KEY_UPDATE_LAST_CHECK);
-    const now = Date.now();
-    if (lastCheck && now - lastCheck < UPDATE_CHECK_INTERVAL_MS) {
-      hasCheckedOnStartupRef.current = true;
-      // Hydrate cached release info so late-opening windows show the result
+    if (lastCheck) {
       const cachedRelease = localStorageAdapter.readString(STORAGE_KEY_UPDATE_LATEST_RELEASE);
       if (cachedRelease) {
         try {
@@ -556,6 +621,19 @@ export function useUpdateCheck(): UseUpdateCheckResult {
           // Ignore corrupted cache
         }
       }
+    }
+
+    // Respect auto-update toggle — skip automatic check when disabled.
+    // Don't set hasCheckedOnStartupRef so re-enabling (which changes the
+    // autoUpdateEnabled dependency) can re-trigger this effect.
+    if (!autoUpdateEnabled) {
+      return;
+    }
+
+    // Check if we've checked recently
+    const now = Date.now();
+    if (lastCheck && now - lastCheck < UPDATE_CHECK_INTERVAL_MS) {
+      hasCheckedOnStartupRef.current = true;
       return;
     }
 
@@ -563,6 +641,13 @@ export function useUpdateCheck(): UseUpdateCheckResult {
     debugLog('Starting delayed update check for version:', updateState.currentVersion);
 
     startupCheckTimeoutRef.current = setTimeout(async () => {
+      // Re-check the toggle at fire time — the user may have toggled it
+      // after the timer was scheduled.
+      const stillEnabled = localStorageAdapter.readString(STORAGE_KEY_AUTO_UPDATE_ENABLED);
+      if (stillEnabled === 'false') {
+        debugLog('Skipping startup check — auto-update disabled after timer was scheduled');
+        return;
+      }
       // If electron-updater's auto-check already started a download, skip the
       // redundant GitHub API check to avoid duplicate toast notifications.
       if (autoDownloadStatusRef.current !== 'idle') {
@@ -601,7 +686,7 @@ export function useUpdateCheck(): UseUpdateCheckResult {
         clearTimeout(startupCheckTimeoutRef.current);
       }
     };
-  }, [updateState.currentVersion, performCheck]);
+  }, [updateState.currentVersion, autoUpdateEnabled, performCheck]);
 
   return {
     updateState,
@@ -609,5 +694,7 @@ export function useUpdateCheck(): UseUpdateCheckResult {
     dismissUpdate,
     openReleasePage,
     installUpdate,
+    startDownload,
+    isUpdateDemoMode: IS_UPDATE_DEMO_MODE,
   };
 }

application/syncPayload.ts

@@ -0,0 +1,303 @@
+/**
+ * Sync Payload Builders — Single source of truth for constructing and applying
+ * the encrypted cloud-sync payload.
+ *
+ * Both the main window (App.tsx) and the settings window (SettingsSyncTab.tsx)
+ * must use these helpers to guarantee every field is included and no data is
+ * silently dropped.
+ */
+
+import type {
+  Host,
+  Identity,
+  KnownHost,
+  PortForwardingRule,
+  Snippet,
+  SSHKey,
+} from '../domain/models';
+import type { SyncPayload } from '../domain/sync';
+import { localStorageAdapter } from '../infrastructure/persistence/localStorageAdapter';
+import {
+  STORAGE_KEY_THEME,
+  STORAGE_KEY_UI_THEME_LIGHT,
+  STORAGE_KEY_UI_THEME_DARK,
+  STORAGE_KEY_ACCENT_MODE,
+  STORAGE_KEY_COLOR,
+  STORAGE_KEY_UI_FONT_FAMILY,
+  STORAGE_KEY_UI_LANGUAGE,
+  STORAGE_KEY_CUSTOM_CSS,
+  STORAGE_KEY_TERM_THEME,
+  STORAGE_KEY_TERM_FONT_FAMILY,
+  STORAGE_KEY_TERM_FONT_SIZE,
+  STORAGE_KEY_TERM_SETTINGS,
+  STORAGE_KEY_CUSTOM_KEY_BINDINGS,
+  STORAGE_KEY_EDITOR_WORD_WRAP,
+  STORAGE_KEY_SFTP_DOUBLE_CLICK_BEHAVIOR,
+  STORAGE_KEY_SFTP_AUTO_SYNC,
+  STORAGE_KEY_SFTP_SHOW_HIDDEN_FILES,
+  STORAGE_KEY_SFTP_USE_COMPRESSED_UPLOAD,
+  STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR,
+  STORAGE_KEY_CUSTOM_THEMES,
+  STORAGE_KEY_IMMERSIVE_MODE,
+} from '../infrastructure/config/storageKeys';
+
+// ---------------------------------------------------------------------------
+// Input types
+// ---------------------------------------------------------------------------
+
+/** All vault-owned data that participates in cloud sync. */
+export interface SyncableVaultData {
+  hosts: Host[];
+  keys: SSHKey[];
+  identities: Identity[];
+  snippets: Snippet[];
+  customGroups: string[];
+  snippetPackages?: string[];
+  knownHosts: KnownHost[];
+}
+
+/** Callbacks used by `applySyncPayload` to import data into local state. */
+interface SyncPayloadImporters {
+  /** Import vault data (hosts, keys, identities, snippets, customGroups, snippetPackages, knownHosts). */
+  importVaultData: (jsonString: string) => void;
+  /** Import port-forwarding rules (lives outside the vault hook). */
+  importPortForwardingRules?: (rules: PortForwardingRule[]) => void;
+  /** Called after synced settings have been written to localStorage. */
+  onSettingsApplied?: () => void;
+}
+
+// ---------------------------------------------------------------------------
+// Settings sync helpers
+// ---------------------------------------------------------------------------
+
+/** Terminal settings keys that are safe to sync (platform-agnostic). */
+const SYNCABLE_TERMINAL_KEYS = [
+  'scrollback', 'drawBoldInBrightColors', 'fontLigatures', 'fontWeight', 'fontWeightBold',
+  'linePadding', 'cursorShape', 'cursorBlink', 'minimumContrastRatio',
+  'scrollOnInput', 'scrollOnOutput', 'scrollOnKeyPress', 'scrollOnPaste',
+  'smoothScrolling',
+  'rightClickBehavior', 'copyOnSelect', 'middleClickPaste', 'wordSeparators',
+  'linkModifier', 'keywordHighlightEnabled', 'keywordHighlightRules',
+  'keepaliveInterval', 'disableBracketedPaste', 'osc52Clipboard',
+  'autocompleteEnabled', 'autocompleteGhostText', 'autocompletePopupMenu',
+  'autocompleteDebounceMs', 'autocompleteMinChars', 'autocompleteMaxSuggestions',
+] as const;
+
+/**
+ * Collect all syncable settings from localStorage.
+ */
+export function collectSyncableSettings(): SyncPayload['settings'] {
+  const settings: SyncPayload['settings'] = {};
+
+  // Theme & Appearance
+  const theme = localStorageAdapter.readString(STORAGE_KEY_THEME);
+  if (theme === 'light' || theme === 'dark' || theme === 'system') settings.theme = theme;
+  const lightUi = localStorageAdapter.readString(STORAGE_KEY_UI_THEME_LIGHT);
+  if (lightUi) settings.lightUiThemeId = lightUi;
+  const darkUi = localStorageAdapter.readString(STORAGE_KEY_UI_THEME_DARK);
+  if (darkUi) settings.darkUiThemeId = darkUi;
+  const accentMode = localStorageAdapter.readString(STORAGE_KEY_ACCENT_MODE);
+  if (accentMode === 'theme' || accentMode === 'custom') settings.accentMode = accentMode;
+  const accent = localStorageAdapter.readString(STORAGE_KEY_COLOR);
+  if (accent) settings.customAccent = accent;
+  const uiFont = localStorageAdapter.readString(STORAGE_KEY_UI_FONT_FAMILY);
+  if (uiFont) settings.uiFontFamilyId = uiFont;
+  const lang = localStorageAdapter.readString(STORAGE_KEY_UI_LANGUAGE);
+  if (lang) settings.uiLanguage = lang;
+  const css = localStorageAdapter.readString(STORAGE_KEY_CUSTOM_CSS);
+  if (css != null) settings.customCSS = css;
+
+  // Terminal
+  const termTheme = localStorageAdapter.readString(STORAGE_KEY_TERM_THEME);
+  if (termTheme) settings.terminalTheme = termTheme;
+  const termFont = localStorageAdapter.readString(STORAGE_KEY_TERM_FONT_FAMILY);
+  if (termFont) settings.terminalFontFamily = termFont;
+  const termSize = localStorageAdapter.readNumber(STORAGE_KEY_TERM_FONT_SIZE);
+  if (termSize != null) settings.terminalFontSize = termSize;
+
+  // Terminal settings (syncable subset only)
+  const termSettingsRaw = localStorageAdapter.readString(STORAGE_KEY_TERM_SETTINGS);
+  if (termSettingsRaw) {
+    try {
+      const full = JSON.parse(termSettingsRaw);
+      const subset: Record<string, unknown> = {};
+      for (const key of SYNCABLE_TERMINAL_KEYS) {
+        if (key in full) subset[key] = full[key];
+      }
+      if (Object.keys(subset).length > 0) settings.terminalSettings = subset;
+    } catch { /* ignore corrupt data */ }
+  }
+
+  // Custom terminal themes
+  const customThemesRaw = localStorageAdapter.readString(STORAGE_KEY_CUSTOM_THEMES);
+  if (customThemesRaw) {
+    try {
+      const parsed = JSON.parse(customThemesRaw);
+      if (Array.isArray(parsed)) settings.customTerminalThemes = parsed;
+    } catch { /* ignore */ }
+  }
+
+  // Keyboard
+  const kb = localStorageAdapter.readString(STORAGE_KEY_CUSTOM_KEY_BINDINGS);
+  if (kb) {
+    try {
+      settings.customKeyBindings = JSON.parse(kb);
+    } catch { /* ignore */ }
+  }
+
+  // Editor
+  const wordWrap = localStorageAdapter.readString(STORAGE_KEY_EDITOR_WORD_WRAP);
+  if (wordWrap === 'true' || wordWrap === 'false') settings.editorWordWrap = wordWrap === 'true';
+
+  // SFTP
+  const dblClick = localStorageAdapter.readString(STORAGE_KEY_SFTP_DOUBLE_CLICK_BEHAVIOR);
+  if (dblClick === 'open' || dblClick === 'transfer') settings.sftpDoubleClickBehavior = dblClick;
+  const autoSync = localStorageAdapter.readString(STORAGE_KEY_SFTP_AUTO_SYNC);
+  if (autoSync === 'true' || autoSync === 'false') settings.sftpAutoSync = autoSync === 'true';
+  const hidden = localStorageAdapter.readString(STORAGE_KEY_SFTP_SHOW_HIDDEN_FILES);
+  if (hidden === 'true' || hidden === 'false') settings.sftpShowHiddenFiles = hidden === 'true';
+  const compress = localStorageAdapter.readString(STORAGE_KEY_SFTP_USE_COMPRESSED_UPLOAD);
+  if (compress === 'true' || compress === 'false') settings.sftpUseCompressedUpload = compress === 'true';
+  const autoOpenSidebar = localStorageAdapter.readString(STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR);
+  if (autoOpenSidebar === 'true' || autoOpenSidebar === 'false') settings.sftpAutoOpenSidebar = autoOpenSidebar === 'true';
+
+  // Immersive mode
+  const immersive = localStorageAdapter.readString(STORAGE_KEY_IMMERSIVE_MODE);
+  if (immersive === 'true' || immersive === 'false') settings.immersiveMode = immersive === 'true';
+
+  return Object.keys(settings).length > 0 ? settings : undefined;
+}
+
+/**
+ * Apply synced settings to localStorage. Merges terminal settings
+ * to preserve platform-specific fields.
+ */
+function applySyncableSettings(settings: NonNullable<SyncPayload['settings']>): void {
+  // Theme & Appearance
+  if (settings.theme != null) localStorageAdapter.writeString(STORAGE_KEY_THEME, settings.theme);
+  if (settings.lightUiThemeId != null) localStorageAdapter.writeString(STORAGE_KEY_UI_THEME_LIGHT, settings.lightUiThemeId);
+  if (settings.darkUiThemeId != null) localStorageAdapter.writeString(STORAGE_KEY_UI_THEME_DARK, settings.darkUiThemeId);
+  if (settings.accentMode != null) localStorageAdapter.writeString(STORAGE_KEY_ACCENT_MODE, settings.accentMode);
+  if (settings.customAccent != null) localStorageAdapter.writeString(STORAGE_KEY_COLOR, settings.customAccent);
+  if (settings.uiFontFamilyId != null) localStorageAdapter.writeString(STORAGE_KEY_UI_FONT_FAMILY, settings.uiFontFamilyId);
+  if (settings.uiLanguage != null) localStorageAdapter.writeString(STORAGE_KEY_UI_LANGUAGE, settings.uiLanguage);
+  if (settings.customCSS != null) localStorageAdapter.writeString(STORAGE_KEY_CUSTOM_CSS, settings.customCSS);
+
+  // Terminal
+  if (settings.terminalTheme != null) localStorageAdapter.writeString(STORAGE_KEY_TERM_THEME, settings.terminalTheme);
+  if (settings.terminalFontFamily != null) localStorageAdapter.writeString(STORAGE_KEY_TERM_FONT_FAMILY, settings.terminalFontFamily);
+  if (settings.terminalFontSize != null) localStorageAdapter.writeString(STORAGE_KEY_TERM_FONT_SIZE, String(settings.terminalFontSize));
+
+  // Terminal settings — merge with existing to preserve platform-specific keys
+  if (settings.terminalSettings) {
+    let existing: Record<string, unknown> = {};
+    const raw = localStorageAdapter.readString(STORAGE_KEY_TERM_SETTINGS);
+    if (raw) {
+      try { existing = JSON.parse(raw); } catch { /* ignore */ }
+    }
+    const merged = { ...existing };
+    for (const key of SYNCABLE_TERMINAL_KEYS) {
+      if (key in settings.terminalSettings) {
+        merged[key] = settings.terminalSettings[key];
+      }
+    }
+    localStorageAdapter.writeString(STORAGE_KEY_TERM_SETTINGS, JSON.stringify(merged));
+  }
+
+  // Custom terminal themes
+  if (settings.customTerminalThemes != null) {
+    localStorageAdapter.writeString(STORAGE_KEY_CUSTOM_THEMES, JSON.stringify(settings.customTerminalThemes));
+  }
+
+  // Keyboard
+  if (settings.customKeyBindings != null) {
+    localStorageAdapter.writeString(STORAGE_KEY_CUSTOM_KEY_BINDINGS, JSON.stringify(settings.customKeyBindings));
+  }
+
+  // Editor
+  if (settings.editorWordWrap != null) localStorageAdapter.writeString(STORAGE_KEY_EDITOR_WORD_WRAP, String(settings.editorWordWrap));
+
+  // SFTP
+  if (settings.sftpDoubleClickBehavior != null) localStorageAdapter.writeString(STORAGE_KEY_SFTP_DOUBLE_CLICK_BEHAVIOR, settings.sftpDoubleClickBehavior);
+  if (settings.sftpAutoSync != null) localStorageAdapter.writeString(STORAGE_KEY_SFTP_AUTO_SYNC, String(settings.sftpAutoSync));
+  if (settings.sftpShowHiddenFiles != null) localStorageAdapter.writeString(STORAGE_KEY_SFTP_SHOW_HIDDEN_FILES, String(settings.sftpShowHiddenFiles));
+  if (settings.sftpUseCompressedUpload != null) localStorageAdapter.writeString(STORAGE_KEY_SFTP_USE_COMPRESSED_UPLOAD, String(settings.sftpUseCompressedUpload));
+  if (settings.sftpAutoOpenSidebar != null) localStorageAdapter.writeString(STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR, String(settings.sftpAutoOpenSidebar));
+
+  // Immersive mode
+  if (settings.immersiveMode != null) localStorageAdapter.writeString(STORAGE_KEY_IMMERSIVE_MODE, String(settings.immersiveMode));
+}
+
+// ---------------------------------------------------------------------------
+// Builders
+// ---------------------------------------------------------------------------
+
+/**
+ * Build a complete `SyncPayload` from local data.
+ *
+ * Port-forwarding rules are optional because they are managed by a separate
+ * state hook (`usePortForwardingState`).  Callers should strip transient
+ * runtime fields (status, error, lastUsedAt) before passing them in.
+ */
+export function buildSyncPayload(
+  vault: SyncableVaultData,
+  portForwardingRules?: PortForwardingRule[],
+): SyncPayload {
+  return {
+    hosts: vault.hosts,
+    keys: vault.keys,
+    identities: vault.identities,
+    snippets: vault.snippets,
+    customGroups: vault.customGroups,
+    snippetPackages: vault.snippetPackages,
+    knownHosts: vault.knownHosts,
+    portForwardingRules,
+    settings: collectSyncableSettings(),
+    syncedAt: Date.now(),
+  };
+}
+
+/**
+ * Apply a downloaded `SyncPayload` to local state via the provided importers.
+ *
+ * This ensures both vault data and port-forwarding rules are imported
+ * consistently across windows.
+ */
+export function applySyncPayload(
+  payload: SyncPayload,
+  importers: SyncPayloadImporters,
+): void {
+  // Build the vault import object.  knownHosts is only included when the
+  // payload explicitly carries the field (even if it's []).  Legacy cloud
+  // snapshots may omit it entirely — in that case we leave the local
+  // known-hosts list untouched rather than destructively wiping it.
+  const vaultImport: Record<string, unknown> = {
+    hosts: payload.hosts,
+    keys: payload.keys,
+    identities: payload.identities,
+    snippets: payload.snippets,
+    customGroups: payload.customGroups,
+  };
+  if (payload.snippetPackages !== undefined) {
+    vaultImport.snippetPackages = payload.snippetPackages;
+  }
+  if (payload.knownHosts !== undefined) {
+    vaultImport.knownHosts = payload.knownHosts;
+  }
+
+  importers.importVaultData(JSON.stringify(vaultImport));
+
+  // Only import port-forwarding rules when the payload explicitly carries
+  // them.  Absent field = "payload was created before this feature existed",
+  // so local rules are preserved.  Explicitly present [] = "remote has no
+  // rules, clear local state".
+  if (payload.portForwardingRules !== undefined && importers.importPortForwardingRules) {
+    importers.importPortForwardingRules(payload.portForwardingRules);
+  }
+
+  // Apply synced settings
+  if (payload.settings) {
+    applySyncableSettings(payload.settings);
+    importers.onSettingsApplied?.();
+  }
+}

components/AIChatSidePanel.tsx

@@ -0,0 +1,936 @@
+/**
+ * AIChatSidePanel - Main AI chat interface side panel
+ *
+ * Zed-style agent panel with agent selector, scoped chat sessions,
+ * message list, input area, and session history drawer.
+ *
+ * Core logic is decomposed into focused hooks:
+ * - useAIChatStreaming: stream processing, abort management, agent sub-flows
+ * - useConversationExport: export formats & object URL lifecycle
+ */
+
+import {
+  History,
+  Plus,
+  Trash2,
+  X,
+} from 'lucide-react';
+import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import { cn } from '../lib/utils';
+import { useI18n } from '../application/i18n/I18nProvider';
+import { useWindowControls } from '../application/state/useWindowControls';
+import { useFileUpload } from '../application/state/useFileUpload';
+import type {
+  AIPermissionMode,
+  AISession,
+  AISessionScope,
+  ChatMessage,
+  DiscoveredAgent,
+  ExternalAgentConfig,
+  ProviderConfig,
+  WebSearchConfig,
+} from '../infrastructure/ai/types';
+import { getAgentModelPresets } from '../infrastructure/ai/types';
+import { useAgentDiscovery } from '../application/state/useAgentDiscovery';
+import { Button } from './ui/button';
+import { ScrollArea } from './ui/scroll-area';
+import AgentSelector from './ai/AgentSelector';
+import ChatInput from './ai/ChatInput';
+import ChatMessageList from './ai/ChatMessageList';
+import ConversationExport from './ai/ConversationExport';
+import { useAIChatStreaming, getNetcattyBridge } from './ai/hooks/useAIChatStreaming';
+import { clearAllPendingApprovals } from '../infrastructure/ai/shared/approvalGate';
+import { useConversationExport } from './ai/hooks/useConversationExport';
+import type { ExecutorContext } from '../infrastructure/ai/cattyAgent/executor';
+
+// -------------------------------------------------------------------
+// Props
+// -------------------------------------------------------------------
+
+interface AIChatSidePanelProps {
+  // Session state (per-scope)
+  sessions: AISession[];
+  activeSessionIdMap: Record<string, string | null>;
+  setActiveSessionId: (scopeKey: string, id: string | null) => void;
+  createSession: (scope: AISessionScope, agentId?: string) => AISession;
+  deleteSession: (sessionId: string, scopeKey?: string) => void;
+  updateSessionTitle: (sessionId: string, title: string) => void;
+  updateSessionExternalSessionId: (sessionId: string, externalSessionId: string | undefined) => void;
+  retargetSessionScope: (sessionId: string, scope: AISessionScope) => void;
+  addMessageToSession: (sessionId: string, message: ChatMessage) => void;
+  updateLastMessage: (
+    sessionId: string,
+    updater: (msg: ChatMessage) => ChatMessage,
+  ) => void;
+  updateMessageById: (
+    sessionId: string,
+    messageId: string,
+    updater: (msg: ChatMessage) => ChatMessage,
+  ) => void;
+  // Provider config
+  providers: ProviderConfig[];
+  activeProviderId: string;
+  activeModelId: string;
+
+  // Agent info
+  defaultAgentId: string;
+  externalAgents: ExternalAgentConfig[];
+  setExternalAgents?: (value: ExternalAgentConfig[] | ((prev: ExternalAgentConfig[]) => ExternalAgentConfig[])) => void;
+  agentModelMap: Record<string, string>;
+  setAgentModel: (agentId: string, modelId: string) => void;
+
+  // Safety
+  globalPermissionMode: AIPermissionMode;
+  setGlobalPermissionMode?: (mode: AIPermissionMode) => void;
+  commandBlocklist?: string[];
+  maxIterations?: number;
+
+  // Web search
+  webSearchConfig?: WebSearchConfig | null;
+
+  // Context
+  scopeType: 'terminal' | 'workspace';
+  scopeTargetId?: string;
+  scopeHostIds?: string[];
+  scopeLabel?: string;
+
+  // Terminal session context (from parent)
+  terminalSessions?: Array<{
+    sessionId: string;
+    hostId: string;
+    hostname: string;
+    label: string;
+    os?: string;
+    username?: string;
+    protocol?: string;
+    shellType?: string;
+    deviceType?: string;
+    connected: boolean;
+  }>;
+  resolveExecutorContext?: (scope: {
+    type: 'terminal' | 'workspace';
+    targetId?: string;
+    label?: string;
+  }) => ExecutorContext;
+
+  // Visibility
+  isVisible?: boolean;
+}
+
+// -------------------------------------------------------------------
+// Helpers
+// -------------------------------------------------------------------
+
+function generateId(): string {
+  return `msg-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`;
+}
+
+function buildAcpHistoryMessages(messages: ChatMessage[]): Array<{ role: 'user' | 'assistant'; content: string }> {
+  return messages.flatMap((message) => {
+    if (message.role === 'system') return [];
+
+    if (message.role === 'user') {
+      return message.content ? [{ role: 'user' as const, content: message.content }] : [];
+    }
+
+    if (message.role === 'assistant') {
+      const parts: string[] = [];
+      if (message.content) parts.push(message.content);
+      if (message.toolCalls?.length) {
+        parts.push(...message.toolCalls.map((tc) => `Tool call: ${tc.name}(${JSON.stringify(tc.arguments ?? {})})`));
+      }
+      if (!parts.length) return [];
+      return [{ role: 'assistant' as const, content: parts.join('\n\n') }];
+    }
+
+    if (message.role === 'tool' && message.toolResults?.length) {
+      return message.toolResults.map((tr) => ({
+        role: 'assistant' as const,
+        content: `Tool result:\n${tr.content}`,
+      }));
+    }
+
+    return [];
+  });
+}
+
+function getSessionScopeMatchRank(
+  session: AISession,
+  scopeType: 'terminal' | 'workspace',
+  scopeTargetId?: string,
+  scopeHostIds?: string[],
+  activeTerminalTargetIds?: Set<string>,
+): number {
+  if (session.scope.type !== scopeType) return 0;
+  if (session.scope.targetId === scopeTargetId) return 2;
+
+  if (scopeType !== 'terminal' || !scopeHostIds?.length || !session.scope.hostIds?.length) {
+    return 0;
+  }
+
+  if (session.scope.targetId && activeTerminalTargetIds?.has(session.scope.targetId)) {
+    return 0;
+  }
+
+  return session.scope.hostIds.some((hostId) => scopeHostIds.includes(hostId)) ? 1 : 0;
+}
+
+// -------------------------------------------------------------------
+// Component
+// -------------------------------------------------------------------
+
+const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
+  sessions,
+  activeSessionIdMap,
+  setActiveSessionId: setActiveSessionIdForScope,
+  createSession,
+  deleteSession,
+  updateSessionTitle,
+  updateSessionExternalSessionId,
+  retargetSessionScope,
+  addMessageToSession,
+  updateLastMessage,
+  updateMessageById,
+  providers,
+  activeProviderId,
+  activeModelId,
+  defaultAgentId,
+  externalAgents,
+  setExternalAgents,
+  agentModelMap,
+  setAgentModel,
+  globalPermissionMode,
+  setGlobalPermissionMode,
+  commandBlocklist,
+  maxIterations = 20,
+  webSearchConfig,
+  scopeType,
+  scopeTargetId,
+  scopeHostIds,
+  scopeLabel,
+  terminalSessions = [],
+  resolveExecutorContext,
+  isVisible = true,
+}) => {
+  const { t } = useI18n();
+  // ── Per-scope state ──
+  // Derive scope key for per-scope isolation
+  const scopeKey = `${scopeType}:${scopeTargetId ?? ''}`;
+
+  // Per-scope input values
+  const [inputValueMap, setInputValueMap] = useState<Record<string, string>>({});
+  const inputValue = inputValueMap[scopeKey] ?? '';
+  const setInputValue = useCallback((val: string) => {
+    setInputValueMap(prev => ({ ...prev, [scopeKey]: val }));
+  }, [scopeKey]);
+
+  const [showHistory, setShowHistory] = useState(false);
+  const [currentAgentId, setCurrentAgentId] = useState(defaultAgentId);
+
+  const { files, addFiles, removeFile, clearFiles } = useFileUpload();
+  const { openSettingsWindow } = useWindowControls();
+  const terminalSessionsRef = useRef(terminalSessions);
+  terminalSessionsRef.current = terminalSessions;
+  const resolveExecutorContextRef = useRef(resolveExecutorContext);
+  resolveExecutorContextRef.current = resolveExecutorContext;
+
+  // ── Streaming hook ──
+  const {
+    streamingSessionIds,
+    setStreamingForScope,
+    abortControllersRef,
+    sendToCattyAgent,
+    sendToExternalAgent,
+    reportStreamError,
+  } = useAIChatStreaming({
+    maxIterations,
+    addMessageToSession,
+    updateLastMessage,
+    updateMessageById,
+  });
+
+
+  // Per-scope active session ID
+  const activeSessionIdForScope = activeSessionIdMap[scopeKey] ?? null;
+  const setActiveSessionId = useCallback((id: string | null) => {
+    setActiveSessionIdForScope(scopeKey, id);
+  }, [scopeKey, setActiveSessionIdForScope]);
+
+  const activeTerminalTargetIds = useMemo(() => {
+    const targetIds = new Set<string>();
+    for (const [sessionScopeKey, sessionId] of Object.entries(activeSessionIdMap)) {
+      if (!sessionScopeKey.startsWith('terminal:') || !sessionId) continue;
+      const targetId = sessionScopeKey.slice('terminal:'.length);
+      if (!targetId || targetId === scopeTargetId) continue;
+      targetIds.add(targetId);
+    }
+    return targetIds;
+  }, [activeSessionIdMap, scopeTargetId]);
+
+  const historySessions = useMemo(
+    () =>
+      sessions
+        .map((session) => ({
+          session,
+          matchRank: getSessionScopeMatchRank(session, scopeType, scopeTargetId, scopeHostIds, activeTerminalTargetIds),
+        }))
+        .filter(({ matchRank }) => matchRank > 0)
+        .sort((a, b) => b.matchRank - a.matchRank || b.session.updatedAt - a.session.updatedAt)
+        .map(({ session }) => session),
+    [sessions, scopeType, scopeTargetId, scopeHostIds, activeTerminalTargetIds],
+  );
+
+  const activeSession = useMemo(() => {
+    if (activeSessionIdForScope) {
+      const session = sessions.find((s) => s.id === activeSessionIdForScope);
+      if (session && getSessionScopeMatchRank(session, scopeType, scopeTargetId, scopeHostIds, activeTerminalTargetIds) > 0) {
+        return session;
+      }
+    }
+    return historySessions[0] ?? null;
+  }, [sessions, activeSessionIdForScope, historySessions, scopeType, scopeTargetId, scopeHostIds, activeTerminalTargetIds]);
+
+  const activeSessionId = activeSession?.id ?? activeSessionIdForScope;
+  const isStreaming = activeSessionId ? streamingSessionIds.has(activeSessionId) : false;
+
+  const shouldRetargetActiveSession = useMemo(() => {
+    if (!activeSession || scopeType !== 'terminal' || !scopeTargetId || !scopeHostIds?.length) {
+      return false;
+    }
+
+    if (activeSession.scope.type !== scopeType || activeSession.scope.targetId === scopeTargetId) {
+      return false;
+    }
+
+    // Don't retarget sessions that are actively owned by another terminal
+    if (activeSession.scope.targetId && activeTerminalTargetIds.has(activeSession.scope.targetId)) {
+      return false;
+    }
+
+    return activeSession.scope.hostIds?.some((hostId) => scopeHostIds.includes(hostId)) ?? false;
+  }, [activeSession, scopeType, scopeTargetId, scopeHostIds, activeTerminalTargetIds]);
+
+  useEffect(() => {
+    if (!activeSession) return;
+
+    if (shouldRetargetActiveSession && isVisible) {
+      // Full cleanup of any in-flight work — the session came from a disconnected
+      // terminal, so any active response, pending approvals, or exec is dead.
+      if (streamingSessionIds.has(activeSession.id)) {
+        const controller = abortControllersRef.current.get(activeSession.id);
+        if (controller) {
+          controller.abort();
+          abortControllersRef.current.delete(activeSession.id);
+        }
+        setStreamingForScope(activeSession.id, false);
+        clearAllPendingApprovals(activeSession.id);
+        const bridge = getNetcattyBridge();
+        bridge?.aiCattyCancelExec?.(activeSession.id);
+        bridge?.aiAcpCancel?.('', activeSession.id);
+      }
+      retargetSessionScope(activeSession.id, {
+        type: scopeType,
+        targetId: scopeTargetId,
+        hostIds: scopeHostIds,
+      });
+      return;
+    }
+
+    if (isVisible && activeSessionIdForScope !== activeSession.id) {
+      setActiveSessionId(activeSession.id);
+    }
+  }, [
+    activeSession,
+    activeSessionIdForScope,
+    retargetSessionScope,
+    isVisible,
+    scopeHostIds,
+    scopeTargetId,
+    scopeType,
+    setActiveSessionId,
+    setStreamingForScope,
+    shouldRetargetActiveSession,
+    streamingSessionIds,
+    abortControllersRef,
+  ]);
+
+  // Restore agent selector from active session when scope changes
+  useEffect(() => {
+    if (activeSession) {
+      setCurrentAgentId(activeSession.agentId);
+    }
+  }, [scopeKey, activeSession]);
+
+  // Proactively sync terminal session metadata to main process whenever scope or sessions change
+  useEffect(() => {
+    const bridge = getNetcattyBridge();
+    if (bridge?.aiMcpUpdateSessions) {
+      void bridge.aiMcpUpdateSessions(terminalSessions, activeSessionId ?? undefined);
+    }
+  }, [terminalSessions, scopeKey, activeSessionId]);
+
+  // Sync provider configs to main process so it can decrypt API keys server-side.
+  // Keys stay encrypted in transit; main process decrypts only when making HTTP requests.
+  useEffect(() => {
+    const bridge = getNetcattyBridge();
+    if (bridge?.aiSyncProviders && providers.length > 0) {
+      void bridge.aiSyncProviders(providers);
+    }
+  }, [providers]);
+
+  // Sync web search config to main process (allowlist + encrypted API key for server-side decryption).
+  // Note: This is fire-and-forget; if the first search fires before sync completes, it will fail
+  // with a clear error and succeed on retry. Making this blocking would require async tool creation.
+  useEffect(() => {
+    const bridge = getNetcattyBridge();
+    if (bridge?.aiSyncWebSearch) {
+      void bridge.aiSyncWebSearch(webSearchConfig?.apiHost || null, webSearchConfig?.apiKey || null);
+    }
+  }, [webSearchConfig?.apiHost, webSearchConfig?.apiKey, webSearchConfig?.enabled]);
+
+  // Preserve active streams across tab switches. The panel is conditionally
+  // mounted per tab, so unmounting here should not cancel in-flight work.
+  useEffect(() => {
+    return () => {
+      // no-op: stream lifecycle is managed by explicit stop/delete actions
+    };
+  }, []);
+
+  // Agent discovery
+  const {
+    discoveredAgents,
+    isDiscovering,
+    rediscover,
+    enableAgent,
+  } = useAgentDiscovery(externalAgents, setExternalAgents);
+
+  const handleEnableDiscoveredAgent = useCallback(
+    (agent: DiscoveredAgent) => {
+      const config = enableAgent(agent);
+      setExternalAgents?.((prev) => [...prev, config]);
+    },
+    [enableAgent, setExternalAgents],
+  );
+
+  const messages = activeSession?.messages ?? [];
+
+  // ── Export hook ──
+  const { handleExport } = useConversationExport(activeSession);
+
+  // Active provider info
+  const activeProvider = useMemo(
+    () => providers.find((p) => p.id === activeProviderId),
+    [providers, activeProviderId],
+  );
+
+  const providerDisplayName = activeProvider?.name ?? '';
+  const modelDisplayName = activeModelId || activeProvider?.defaultModel || '';
+
+  // Agent model presets for the current external agent
+  const currentAgentConfig = useMemo(
+    () => currentAgentId !== 'catty' ? externalAgents.find(a => a.id === currentAgentId) : undefined,
+    [currentAgentId, externalAgents],
+  );
+  const agentModelPresets = useMemo(
+    () => getAgentModelPresets(currentAgentConfig?.command),
+    [currentAgentConfig?.command],
+  );
+
+  // Per-agent model: recall last selection or use first preset as default
+  const selectedAgentModel = useMemo(() => {
+    const stored = agentModelMap[currentAgentId];
+    if (stored && agentModelPresets.some(p => stored === p.id || stored.startsWith(p.id + '/'))) {
+      return stored;
+    }
+    // Default to first preset; for models with thinking levels, use the default level
+    if (agentModelPresets.length > 0) {
+      const first = agentModelPresets[0];
+      if (first.thinkingLevels?.length) {
+        return `${first.id}/${first.thinkingLevels[first.thinkingLevels.length - 1]}`;
+      }
+      return first.id;
+    }
+    return undefined;
+  }, [currentAgentId, agentModelMap, agentModelPresets]);
+
+  const handleAgentModelSelect = useCallback((modelId: string) => {
+    setAgentModel(currentAgentId, modelId);
+  }, [currentAgentId, setAgentModel]);
+
+  // -------------------------------------------------------------------
+  // Handlers
+  // -------------------------------------------------------------------
+
+  const handleNewChat = useCallback(() => {
+    const scope: AISessionScope = {
+      type: scopeType,
+      targetId: scopeTargetId,
+      hostIds: scopeHostIds,
+    };
+    const session = createSession(scope, currentAgentId);
+    setActiveSessionId(session.id);
+    setShowHistory(false);
+    setInputValue('');
+  }, [
+    scopeType,
+    scopeTargetId,
+    scopeHostIds,
+    currentAgentId,
+    createSession,
+    setActiveSessionId,
+    setInputValue,
+  ]);
+
+  const handleOpenSettings = useCallback(() => {
+    void openSettingsWindow();
+  }, [openSettingsWindow]);
+
+  // -------------------------------------------------------------------
+  // Shared helpers for handleSend sub-flows
+  // -------------------------------------------------------------------
+
+  /** Ref to always access latest sessions (avoids stale closure in autoTitleSession). */
+  const sessionsRef = useRef(sessions);
+  sessionsRef.current = sessions;
+
+  /** Refs to avoid re-creating handleSend on every keystroke / image change. */
+  const inputValueRef = useRef(inputValue);
+  inputValueRef.current = inputValue;
+  const filesRef = useRef(files);
+  filesRef.current = files;
+
+  /** Auto-title a session from the first user message if untitled. */
+  const autoTitleSession = useCallback((sessionId: string, text: string) => {
+    const s = sessionsRef.current.find(x => x.id === sessionId);
+    if (s && (!s.title || s.title === 'New Chat')) {
+      updateSessionTitle(sessionId, text.length > 50 ? text.slice(0, 50) + '...' : text);
+    }
+  }, [updateSessionTitle]);
+
+  const buildExecutorContextForScope = useCallback((scope: {
+    type: 'terminal' | 'workspace';
+    targetId?: string;
+    label?: string;
+  }): ExecutorContext => {
+    const resolved = resolveExecutorContextRef.current?.(scope);
+    if (resolved) return resolved;
+    return {
+      sessions: terminalSessionsRef.current,
+      workspaceId: scope.type === 'workspace' ? scope.targetId : undefined,
+      workspaceName: scope.type === 'workspace' ? scope.label : undefined,
+    };
+  }, []);
+
+  /** Ensure a session exists for the current scope and return its ID. */
+  const ensureSession = useCallback((): string => {
+    if (activeSession && sessionsRef.current.some((session) => session.id === activeSession.id)) {
+      if (shouldRetargetActiveSession) {
+        retargetSessionScope(activeSession.id, {
+          type: scopeType,
+          targetId: scopeTargetId,
+          hostIds: scopeHostIds,
+        });
+      } else if (activeSessionIdForScope !== activeSession.id) {
+        setActiveSessionId(activeSession.id);
+      }
+      return activeSession.id;
+    }
+    const scope: AISessionScope = { type: scopeType, targetId: scopeTargetId, hostIds: scopeHostIds };
+    const session = createSession(scope, currentAgentId);
+    setActiveSessionId(session.id);
+    return session.id;
+  }, [
+    activeSession,
+    activeSessionIdForScope,
+    createSession,
+    currentAgentId,
+    retargetSessionScope,
+    scopeHostIds,
+    scopeTargetId,
+    scopeType,
+    setActiveSessionId,
+    shouldRetargetActiveSession,
+  ]);
+
+  // -------------------------------------------------------------------
+  // Main send handler (thin orchestrator)
+  // -------------------------------------------------------------------
+
+  const handleSend = useCallback(async () => {
+    const trimmed = inputValueRef.current.trim();
+    const sendScopeKey = scopeKey;
+    if (!trimmed || isStreaming) return;
+
+    const isExternalAgent = currentAgentId !== 'catty';
+
+    // No provider configured for built-in agent
+    if (!isExternalAgent && !activeProvider) {
+      const errSessionId = ensureSession();
+      addMessageToSession(errSessionId, { id: generateId(), role: 'user', content: trimmed, timestamp: Date.now() });
+      addMessageToSession(errSessionId, { id: generateId(), role: 'assistant', content: t('ai.chat.noProvider'), timestamp: Date.now() });
+      setInputValue('');
+      return;
+    }
+
+    // Ensure session exists
+    const sessionId = ensureSession();
+
+    // Capture images before clearing
+    const attachments = filesRef.current.map(f => ({ base64Data: f.base64Data, mediaType: f.mediaType, filename: f.filename, filePath: f.filePath }));
+
+    // Add user message
+    addMessageToSession(sessionId, {
+      id: generateId(), role: 'user', content: trimmed,
+      ...(attachments.length > 0 ? { attachments } : {}),
+      timestamp: Date.now(),
+    });
+    setInputValue('');
+    clearFiles();
+    setStreamingForScope(sessionId, true);
+
+    // Create assistant message placeholder with a tracked ID
+    const agentConfig = isExternalAgent ? externalAgents.find(a => a.id === currentAgentId) : undefined;
+    const assistantMsgId = generateId();
+    addMessageToSession(sessionId, {
+      id: assistantMsgId, role: 'assistant', content: '', timestamp: Date.now(),
+      model: isExternalAgent ? (agentConfig?.name || 'external') : (activeModelId || activeProvider?.defaultModel || ''),
+      providerId: isExternalAgent ? undefined : activeProvider?.providerId,
+    });
+
+    const abortController = new AbortController();
+    abortControllersRef.current.set(sessionId, abortController);
+    const currentSession = sessionsRef.current.find(s => s.id === sessionId);
+
+    if (isExternalAgent) {
+      if (!agentConfig) {
+        updateMessageById(sessionId, assistantMsgId, msg => ({ ...msg, content: 'External agent not found. Please check settings.', executionStatus: 'failed' }));
+        setStreamingForScope(sessionId, false);
+        return;
+      }
+      try {
+        await sendToExternalAgent(sessionId, trimmed, agentConfig, abortController, attachments, {
+          existingSessionId: currentSession?.externalSessionId,
+          updateExternalSessionId: updateSessionExternalSessionId,
+          historyMessages: buildAcpHistoryMessages(currentSession?.messages ?? []),
+          terminalSessions,
+          providers,
+          selectedAgentModel,
+        });
+      } catch (err) {
+        reportStreamError(sessionId, abortController.signal, err);
+      }
+      // Clear any lingering statusText when the external agent stream finishes
+      updateLastMessage(sessionId, msg => msg.statusText ? { ...msg, statusText: '' } : msg);
+      setStreamingForScope(sessionId, false);
+      abortControllersRef.current.delete(sessionId);
+      autoTitleSession(sessionId, trimmed);
+    } else {
+      const toolScope = {
+        type: scopeType,
+        targetId: scopeTargetId,
+        label: scopeLabel,
+      } as const;
+      await sendToCattyAgent(sessionId, sendScopeKey, trimmed, abortController, currentSession ?? undefined, assistantMsgId, {
+        activeProvider,
+        activeModelId,
+        scopeType,
+        scopeTargetId,
+        scopeLabel,
+        globalPermissionMode,
+        commandBlocklist,
+        terminalSessions,
+        webSearchConfig,
+        getExecutorContext: () => buildExecutorContextForScope(toolScope),
+        autoTitleSession,
+      }, attachments.length > 0 ? attachments : undefined);
+    }
+  }, [
+    isStreaming, activeProvider, scopeKey, currentAgentId,
+    activeModelId, externalAgents,
+    ensureSession, addMessageToSession, updateMessageById, updateLastMessage,
+    setStreamingForScope, setInputValue, clearFiles,
+    sendToExternalAgent, sendToCattyAgent, reportStreamError, autoTitleSession, t,
+    abortControllersRef, terminalSessions, providers, selectedAgentModel, updateSessionExternalSessionId,
+    scopeType, scopeTargetId, scopeLabel, globalPermissionMode, commandBlocklist, webSearchConfig, buildExecutorContextForScope,
+  ]);
+
+  const handleStop = useCallback(() => {
+    if (!activeSessionId) return;
+    const controller = abortControllersRef.current.get(activeSessionId);
+    controller?.abort();
+    abortControllersRef.current.delete(activeSessionId);
+    setStreamingForScope(activeSessionId, false);
+    // Clear statusText on the last message so stale status indicators disappear
+    updateLastMessage(activeSessionId, msg => ({
+      ...msg,
+      statusText: '',
+      executionStatus: msg.executionStatus === 'running' ? 'cancelled' : msg.executionStatus,
+    }));
+    // Clear pending approvals for this session (so tool execute functions don't hang)
+    clearAllPendingApprovals(activeSessionId);
+    // Cancel in-flight command executions (Catty Agent + ACP Agent)
+    const bridge = getNetcattyBridge();
+    bridge?.aiCattyCancelExec?.(activeSessionId);
+    bridge?.aiAcpCancel?.('', activeSessionId);
+  }, [activeSessionId, setStreamingForScope, updateLastMessage, abortControllersRef]);
+
+  const handleSelectSession = useCallback(
+    (sessionId: string) => {
+      setActiveSessionId(sessionId);
+      // Restore agent selector to match the session's bound agent
+      const session = sessions.find((s) => s.id === sessionId);
+      if (session) {
+        setCurrentAgentId(session.agentId);
+      }
+      setShowHistory(false);
+    },
+    [setActiveSessionId, sessions],
+  );
+
+  const handleDeleteSession = useCallback(
+    (e: React.MouseEvent, sessionId: string) => {
+      e.stopPropagation();
+      deleteSession(sessionId, scopeKey);
+      // Active session clearing is handled by deleteSession with scopeKey
+    },
+    [deleteSession, scopeKey],
+  );
+
+  const handleAgentChange = useCallback((agentId: string) => {
+    setCurrentAgentId(agentId);
+    // Preserve the current session in history and start a new one with the selected agent
+    const scope: AISessionScope = { type: scopeType, targetId: scopeTargetId, hostIds: scopeHostIds };
+    const session = createSession(scope, agentId);
+    setActiveSessionId(session.id);
+  }, [scopeType, scopeTargetId, scopeHostIds, createSession, setActiveSessionId]);
+
+  // -------------------------------------------------------------------
+  // Render
+  // -------------------------------------------------------------------
+
+  if (!isVisible) return null;
+
+  return (
+    <div className="flex flex-col h-full bg-background">
+      {/* ── Header ── */}
+      <div className="px-2.5 py-1.5 flex items-center justify-between border-b border-border/50 shrink-0">
+        <AgentSelector
+          currentAgentId={currentAgentId}
+          externalAgents={externalAgents}
+          discoveredAgents={discoveredAgents}
+          isDiscovering={isDiscovering}
+          onSelectAgent={handleAgentChange}
+          onEnableDiscoveredAgent={handleEnableDiscoveredAgent}
+          onRediscover={rediscover}
+          onManageAgents={handleOpenSettings}
+        />
+        <div className="flex items-center gap-0.5">
+          <ConversationExport
+            session={activeSession}
+            onExport={handleExport}
+          />
+          <Button
+            variant="ghost"
+            size="icon"
+            className="h-7 w-7 rounded-md text-muted-foreground/62 hover:bg-white/[0.05] hover:text-foreground"
+            onClick={() => setShowHistory(!showHistory)}
+            title="Session history"
+          >
+            <History size={14} />
+          </Button>
+          <Button
+            variant="ghost"
+            size="icon"
+            className="h-7 w-7 rounded-md text-primary/82 hover:bg-primary/[0.10] hover:text-primary"
+            onClick={handleNewChat}
+            title="New chat"
+          >
+            <Plus size={15} />
+          </Button>
+        </div>
+      </div>
+
+      {/* ── Main content ── */}
+      {showHistory ? (
+        <SessionHistoryDrawer
+          sessions={historySessions}
+          activeSessionId={activeSessionId}
+          onSelect={handleSelectSession}
+          onDelete={handleDeleteSession}
+          onClose={() => setShowHistory(false)}
+        />
+      ) : (
+        <>
+          {/* Chat messages */}
+          <ChatMessageList
+            messages={messages}
+            isStreaming={isStreaming}
+            activeSessionId={activeSessionId}
+          />
+
+          {/* Recent sessions (Zed-style, shown when no messages) */}
+          {messages.length === 0 && historySessions.length > 0 && (
+            <div className="shrink-0 px-4 pb-1">
+              <div className="flex items-baseline justify-between mb-2">
+                <span className="text-[11px] text-muted-foreground/30 tracking-wide">{t('ai.chat.recent')}</span>
+                <button
+                  onClick={() => setShowHistory(true)}
+                  className="text-[11px] text-muted-foreground/30 hover:text-muted-foreground/50 transition-colors cursor-pointer"
+                >
+                  {t('ai.chat.viewAll')}
+                </button>
+              </div>
+              {historySessions.slice(0, 3).map((session) => (
+                <button
+                  key={session.id}
+                  onClick={() => handleSelectSession(session.id)}
+                  className="w-full flex items-baseline justify-between py-1.5 text-left hover:text-foreground transition-colors cursor-pointer"
+                >
+                  <span className="text-[13px] text-foreground/60 truncate pr-4">
+                    {session.title || t('ai.chat.untitled')}
+                  </span>
+                  <span className="text-[11px] text-muted-foreground/25 shrink-0">
+                    {formatRelativeTime(new Date(session.updatedAt), t)}
+                  </span>
+                </button>
+              ))}
+            </div>
+          )}
+
+          {/* Input area */}
+          <ChatInput
+            value={inputValue}
+            onChange={setInputValue}
+            onSend={handleSend}
+            onStop={handleStop}
+            isStreaming={isStreaming}
+            providerName={providerDisplayName}
+            modelName={modelDisplayName}
+            agentName={currentAgentId === 'catty' ? 'Catty Agent' : externalAgents.find(a => a.id === currentAgentId)?.name}
+            modelPresets={agentModelPresets}
+            selectedModelId={selectedAgentModel}
+            onModelSelect={handleAgentModelSelect}
+            files={files}
+            onAddFiles={addFiles}
+            onRemoveFile={removeFile}
+            hosts={terminalSessions.map(s => ({ sessionId: s.sessionId, hostname: s.hostname, label: s.label, connected: s.connected }))}
+            permissionMode={globalPermissionMode}
+            onPermissionModeChange={setGlobalPermissionMode}
+          />
+        </>
+      )}
+
+    </div>
+  );
+};
+
+// -------------------------------------------------------------------
+// Session History Drawer
+// -------------------------------------------------------------------
+
+interface SessionHistoryDrawerProps {
+  sessions: AISession[];
+  activeSessionId: string | null;
+  onSelect: (sessionId: string) => void;
+  onDelete: (e: React.MouseEvent, sessionId: string) => void;
+  onClose: () => void;
+}
+
+const SessionHistoryDrawer: React.FC<SessionHistoryDrawerProps> = ({
+  sessions,
+  activeSessionId,
+  onSelect,
+  onDelete,
+  onClose,
+}) => {
+  const { t } = useI18n();
+  return (
+    <div className="flex-1 flex flex-col min-h-0">
+      <div className="px-4 py-2.5 flex items-center justify-between shrink-0 border-b border-border/30">
+        <span className="text-[13px] font-medium text-foreground/80">{t('ai.chat.allSessions')}</span>
+        <button
+          onClick={onClose}
+          className="text-[12px] text-muted-foreground/60 hover:text-muted-foreground transition-colors cursor-pointer"
+        >
+          <X size={14} />
+        </button>
+      </div>
+      <ScrollArea className="flex-1">
+        <div className="px-3">
+          {sessions.length === 0 ? (
+            <div className="py-12 text-center">
+              <p className="text-[13px] text-muted-foreground/40">
+                {t('ai.chat.noSessions')}
+              </p>
+            </div>
+          ) : (
+            sessions.map((session) => {
+              const isActive = session.id === activeSessionId;
+              const time = new Date(session.updatedAt);
+              const timeStr = formatRelativeTime(time, t);
+
+              return (
+                <div
+                  key={session.id}
+                  role="button"
+                  tabIndex={0}
+                  onClick={() => onSelect(session.id)}
+                  onKeyDown={(e) => { if (e.key === 'Enter' || e.key === ' ') onSelect(session.id); }}
+                  className={cn(
+                    'w-full flex items-center justify-between py-2.5 border-b border-border/20 text-left transition-colors cursor-pointer group',
+                    isActive ? 'text-foreground' : 'text-foreground/70 hover:text-foreground',
+                  )}
+                >
+                  <span className="text-[13px] truncate pr-3 flex-1 min-w-0">
+                    {session.title || t('ai.chat.untitled')}
+                  </span>
+                  <div className="flex items-center gap-2 shrink-0">
+                    <span className="text-[12px] text-muted-foreground/50">
+                      {timeStr}
+                    </span>
+                    <button
+                      onClick={(e) => onDelete(e, session.id)}
+                      className="opacity-0 group-hover:opacity-100 p-0.5 hover:text-destructive transition-all cursor-pointer"
+                      title="Delete"
+                    >
+                      <Trash2 size={12} />
+                    </button>
+                  </div>
+                </div>
+              );
+            })
+          )}
+        </div>
+      </ScrollArea>
+    </div>
+  );
+};
+
+// -------------------------------------------------------------------
+// Helpers
+// -------------------------------------------------------------------
+
+function formatRelativeTime(date: Date, t: (key: string) => string): string {
+  const now = Date.now();
+  const diff = now - date.getTime();
+  const minutes = Math.floor(diff / 60_000);
+  const hours = Math.floor(diff / 3_600_000);
+  const days = Math.floor(diff / 86_400_000);
+
+  if (minutes < 1) return t('ai.chat.justNow');
+  if (minutes < 60) return t('ai.chat.minutesAgo').replace('{n}', String(minutes));
+  if (hours < 24) return t('ai.chat.hoursAgo').replace('{n}', String(hours));
+  if (days < 7) return t('ai.chat.daysAgo').replace('{n}', String(days));
+  return date.toLocaleDateString(undefined, { month: 'short', day: 'numeric' });
+}
+
+// -------------------------------------------------------------------
+// Export
+// -------------------------------------------------------------------
+
+const AIChatSidePanel = React.memo(AIChatSidePanelInner);
+AIChatSidePanel.displayName = 'AIChatSidePanel';
+
+export default AIChatSidePanel;
+export { AIChatSidePanel };
+export type { AIChatSidePanelProps };

components/CloudSyncSettings.tsx

@@ -411,7 +411,7 @@ const ProviderCard: React.FC<ProviderCardProps> = ({
                 ) : (
                     <Button
                         size="sm"
-                        onClick={() => { console.log('[ProviderCard] Connect clicked'); onConnect(); }}
+                        onClick={() => { onConnect(); }}
                         className="gap-1"
                         disabled={disabled || isConnecting}
                     >
@@ -611,7 +611,7 @@ interface SyncDashboardProps {
     onClearLocalData?: () => void;
 }
 
-export const SyncDashboard: React.FC<SyncDashboardProps> = ({
+const SyncDashboard: React.FC<SyncDashboardProps> = ({
     onBuildPayload,
     onApplyPayload,
     onClearLocalData,
@@ -689,15 +689,6 @@ export const SyncDashboard: React.FC<SyncDashboardProps> = ({
         }
     };
 
-    // Debug: log provider states
-    console.log('[SyncDashboard] Provider states:', {
-        github: sync.providers.github.status,
-        google: sync.providers.google.status,
-        onedrive: sync.providers.onedrive.status,
-        webdav: sync.providers.webdav.status,
-        s3: sync.providers.s3.status,
-    });
-
     // GitHub Device Flow state
     const [showGitHubModal, setShowGitHubModal] = useState(false);
     const [gitHubUserCode, setGitHubUserCode] = useState('');
@@ -789,12 +780,9 @@ export const SyncDashboard: React.FC<SyncDashboardProps> = ({
 
     // Connect GitHub (disconnect others first - single provider only)
     const handleConnectGitHub = async () => {
-        console.log('[CloudSync] handleConnectGitHub called');
         try {
             await disconnectOtherProviders('github');
-            console.log('[CloudSync] Calling sync.connectGitHub()...');
             const deviceFlow = await sync.connectGitHub();
-            console.log('[CloudSync] Device flow received:', deviceFlow.userCode);
             setGitHubUserCode(deviceFlow.userCode);
             setGitHubVerificationUri(deviceFlow.verificationUri);
             setShowGitHubModal(true);
@@ -812,6 +800,9 @@ export const SyncDashboard: React.FC<SyncDashboardProps> = ({
             toast.success(t('cloudSync.connect.github.success'));
         } catch (error) {
             setIsPollingGitHub(false);
+            setShowGitHubModal(false);
+            // Reset provider status so button is clickable again (without tearing down existing connections)
+            sync.resetProviderStatus('github');
             const message = getNetworkErrorMessage(error, t('common.unknownError'));
             toast.error(message, t('cloudSync.connect.github.failedTitle'));
         }
@@ -825,10 +816,13 @@ export const SyncDashboard: React.FC<SyncDashboardProps> = ({
             // Note: Auth flow is handled automatically by oauthBridge
             toast.info(t('cloudSync.connect.browserContinue'));
         } catch (error) {
-            toast.error(
-                error instanceof Error ? error.message : t('common.unknownError'),
-                t('cloudSync.connect.google.failedTitle'),
-            );
+            // Reset provider status so button is clickable again (without tearing down existing connections)
+            sync.resetProviderStatus('google');
+            const msg = error instanceof Error ? error.message : t('common.unknownError');
+            // Don't show toast for user-initiated cancellation (popup closed)
+            if (!msg.includes('cancelled')) {
+                toast.error(msg, t('cloudSync.connect.google.failedTitle'));
+            }
         }
     };
 
@@ -840,10 +834,13 @@ export const SyncDashboard: React.FC<SyncDashboardProps> = ({
             // Note: Auth flow is handled automatically by oauthBridge
             toast.info(t('cloudSync.connect.browserContinue'));
         } catch (error) {
-            toast.error(
-                error instanceof Error ? error.message : t('common.unknownError'),
-                t('cloudSync.connect.onedrive.failedTitle'),
-            );
+            // Reset provider status so button is clickable again (without tearing down existing connections)
+            sync.resetProviderStatus('onedrive');
+            const msg = error instanceof Error ? error.message : t('common.unknownError');
+            // Don't show toast for user-initiated cancellation (popup closed)
+            if (!msg.includes('cancelled')) {
+                toast.error(msg, t('cloudSync.connect.onedrive.failedTitle'));
+            }
         }
     };
 
@@ -978,6 +975,10 @@ export const SyncDashboard: React.FC<SyncDashboardProps> = ({
             const result = await sync.syncToProvider(provider, payload);
 
             if (result.success) {
+                // Apply merged data if a three-way merge happened
+                if (result.mergedPayload && onApplyPayload) {
+                    onApplyPayload(result.mergedPayload);
+                }
                 toast.success(t('cloudSync.sync.success', { provider }));
             } else if (result.conflictDetected) {
                 // Conflict modal will show automatically
@@ -1258,6 +1259,9 @@ export const SyncDashboard: React.FC<SyncDashboardProps> = ({
                 onClose={() => {
                     setShowGitHubModal(false);
                     setIsPollingGitHub(false);
+                    // Reset provider status so button is clickable again.
+                    // The background polling will continue until expiry but is harmless.
+                    sync.resetProviderStatus('github');
                 }}
             />
 

components/DistroAvatar.tsx

@@ -1,6 +1,6 @@
 import { Server, Usb } from "lucide-react";
 import React, { memo } from "react";
-import { normalizeDistroId } from "../domain/host";
+import { getEffectiveHostDistro } from "../domain/host";
 import { cn } from "../lib/utils";
 import { Host } from "../types";
 
@@ -58,8 +58,7 @@ const DistroAvatarInner: React.FC<DistroAvatarProps> = ({
   className,
   size = "md",
 }) => {
-  const distro =
-    normalizeDistroId(host.distro) || (host.distro || "").toLowerCase();
+  const distro = getEffectiveHostDistro(host);
   const logo = DISTRO_LOGOS[distro];
   const [errored, setErrored] = React.useState(false);
   const bg = DISTRO_COLORS[distro] || DISTRO_COLORS.default;
@@ -106,7 +105,7 @@ const DistroAvatarInner: React.FC<DistroAvatarProps> = ({
       >
         <img
           src={logo}
-          alt={host.distro || host.os}
+          alt={distro || host.os}
           className={cn("object-contain invert brightness-0", iconSize)}
           onError={() => setErrored(true)}
         />

components/FileOpenerDialog.tsx

@@ -45,7 +45,6 @@ export const FileOpenerDialog: React.FC<FileOpenerDialogProps> = ({
     try {
       const result = await onSelectSystemApp();
       if (result) {
-        console.log('[FileOpenerDialog] Calling onSelect with rememberChoice:', rememberChoice, 'result:', result);
         onSelect('system-app', rememberChoice, result);
         onClose();
       }

components/HostDetailsPanel.tsx

@@ -20,17 +20,31 @@ import {
   Tag,
   TerminalSquare,
   User,
+  FileKey,
+  FolderOpen,
+  Trash2,
   Variable,
   Wifi,
+  Router,
   X,
 } from "lucide-react";
 import React, { useEffect, useMemo, useState, useCallback } from "react";
 import { useI18n } from "../application/i18n/I18nProvider";
 import { useApplicationBackend } from "../application/state/useApplicationBackend";
+import { getEffectiveHostDistro, LINUX_DISTRO_OPTIONS } from "../domain/host";
 import { customThemeStore } from "../application/state/customThemeStore";
+import {
+  clearHostFontSizeOverride,
+  clearHostThemeOverride,
+  hasHostFontSizeOverride,
+  hasHostThemeOverride,
+  resolveHostTerminalFontSize,
+  resolveHostTerminalThemeId,
+} from "../domain/terminalAppearance";
 import { MIN_FONT_SIZE, MAX_FONT_SIZE } from "../infrastructure/config/fonts";
 import { cn } from "../lib/utils";
 import { EnvVar, Host, Identity, ManagedSource, ProxyConfig, SSHKey } from "../types";
+import { DISTRO_COLORS, DISTRO_LOGOS } from "./DistroAvatar";
 import { DistroAvatar } from "./DistroAvatar";
 import ThemeSelectPanel from "./ThemeSelectPanel";
 import {
@@ -58,7 +72,7 @@ import {
   ProxyPanel,
 } from "./host-details";
 
-type CredentialType = "sshid" | "key" | "certificate" | null;
+type CredentialType = "sshid" | "key" | "certificate" | "localKeyFile" | null;
 type SubPanel =
   | "none"
   | "create-group"
@@ -68,6 +82,8 @@ type SubPanel =
   | "theme-select"
   | "telnet-theme-select";
 
+const LINUX_DISTRO_OPTION_IDS = [...LINUX_DISTRO_OPTIONS];
+
 interface HostDetailsPanelProps {
   initialData?: Host | null;
   availableKeys: SSHKey[];
@@ -77,6 +93,8 @@ interface HostDetailsPanelProps {
   allTags?: string[]; // All available tags for autocomplete
   allHosts?: Host[]; // All hosts for chain selection
   defaultGroup?: string | null; // Default group for new hosts (from current navigation)
+  terminalThemeId: string;
+  terminalFontSize: number;
   onSave: (host: Host) => void;
   onCancel: () => void;
   onCreateGroup?: (groupPath: string) => void; // Callback to create a new group
@@ -92,6 +110,8 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
   allTags = [],
   allHosts = [],
   defaultGroup,
+  terminalThemeId,
+  terminalFontSize,
   onSave,
   onCancel,
   onCreateGroup,
@@ -113,7 +133,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         os: "linux",
         authMethod: "password",
         charset: "UTF-8",
-        theme: "Flexoki Dark",
+        distroMode: "auto",
         createdAt: Date.now(),
         group: defaultGroup || undefined, // Pre-fill with current navigation group
       } as Host),
@@ -133,6 +153,9 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
   // Password visibility state
   const [showPassword, setShowPassword] = useState(false);
 
+  // Local key file path input state
+  const [newKeyFilePath, setNewKeyFilePath] = useState("");
+
   // New group creation state
   const [newGroupName, setNewGroupName] = useState("");
   const [newGroupParent, setNewGroupParent] = useState("");
@@ -176,6 +199,56 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
     setForm((prev) => ({ ...prev, [key]: value }));
   };
 
+  const effectiveThemeId = useMemo(
+    () => resolveHostTerminalThemeId(form, terminalThemeId),
+    [form, terminalThemeId],
+  );
+  const effectiveFontSize = useMemo(
+    () => resolveHostTerminalFontSize(form, terminalFontSize),
+    [form, terminalFontSize],
+  );
+  const hasEffectiveThemeOverride = useMemo(
+    () => hasHostThemeOverride(form),
+    [form],
+  );
+  const hasEffectiveFontSizeOverride = useMemo(
+    () => hasHostFontSizeOverride(form),
+    [form],
+  );
+  const effectiveTelnetThemeId =
+    form.protocols?.find((p) => p.protocol === "telnet")?.theme || effectiveThemeId;
+  const distroOptions = useMemo(
+    () =>
+      LINUX_DISTRO_OPTION_IDS.map((value) => ({
+        value,
+        label: t(`hostDetails.distro.option.${value}`),
+        icon: DISTRO_LOGOS[value],
+        bgClass: DISTRO_COLORS[value] || DISTRO_COLORS.default,
+      })),
+    [t],
+  );
+
+  const getDistroOptionLabel = useCallback(
+    (value?: string) =>
+      distroOptions.find((option) => option.value === value)?.label ||
+      value ||
+      t("hostDetails.distro.pending"),
+    [distroOptions, t],
+  );
+
+  const effectiveFormDistro = getEffectiveHostDistro(form);
+
+  const handleDistroModeChange = useCallback((mode: "auto" | "manual") => {
+    setForm((prev) => ({
+      ...prev,
+      distroMode: mode,
+      manualDistro:
+        mode === "manual"
+          ? prev.manualDistro || getEffectiveHostDistro(prev) || "linux"
+          : prev.manualDistro,
+    }));
+  }, []);
+
   const updateProxyConfig = useCallback(
     (field: keyof ProxyConfig, value: string | number) => {
       setForm((prev) => ({
@@ -295,6 +368,27 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
       password: form.savePassword === false ? undefined : form.password,
       managedSourceId: finalManagedSourceId,
     };
+    const preserveLegacyTheme = initialData?.theme != null && cleaned.themeOverride !== false;
+    const preserveLegacyFontFamily = initialData?.fontFamily != null && cleaned.fontFamilyOverride !== false;
+    const preserveLegacyFontSize = initialData?.fontSize != null && cleaned.fontSizeOverride !== false;
+
+    if (cleaned.themeOverride === false) {
+      delete cleaned.theme;
+    } else if (preserveLegacyTheme && cleaned.theme == null) {
+      cleaned.theme = initialData?.theme;
+    }
+
+    if (cleaned.fontFamilyOverride === false) {
+      delete cleaned.fontFamily;
+    } else if (preserveLegacyFontFamily && cleaned.fontFamily == null) {
+      cleaned.fontFamily = initialData?.fontFamily;
+    }
+
+    if (cleaned.fontSizeOverride === false) {
+      delete cleaned.fontSize;
+    } else if (preserveLegacyFontSize && cleaned.fontSize == null) {
+      cleaned.fontSize = initialData?.fontSize;
+    }
     onSave(cleaned);
   };
 
@@ -384,6 +478,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         authMethod: identity.authMethod,
         password: undefined,
         identityFileId: undefined,
+        identityFilePaths: undefined,
       }));
       setSelectedCredentialType(null);
       setCredentialPopoverOpen(false);
@@ -475,9 +570,9 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
     return (
       <ThemeSelectPanel
         open={true}
-        selectedThemeId={form.theme || "flexoki-dark"}
+        selectedThemeId={effectiveThemeId}
         onSelect={(themeId) => {
-          update("theme", themeId);
+          setForm((prev) => ({ ...prev, theme: themeId, themeOverride: true }));
           setActiveSubPanel("none");
         }}
         onClose={onCancel}
@@ -492,11 +587,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
     return (
       <ThemeSelectPanel
         open={true}
-        selectedThemeId={
-          form.protocols?.find((p) => p.protocol === "telnet")?.theme ||
-          form.theme ||
-          "flexoki-dark"
-        }
+        selectedThemeId={effectiveTelnetThemeId}
         onSelect={(themeId) => {
           // Update telnet protocol theme
           const telnetConfig = form.protocols?.find(
@@ -888,6 +979,31 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
               </div>
             )}
 
+            {/* Local key file paths display */}
+            {!selectedIdentity && !form.identityFileId && form.identityFilePaths && form.identityFilePaths.length > 0 && (
+              <div className="space-y-1.5">
+                {form.identityFilePaths.map((keyPath, idx) => (
+                  <div key={idx} className="flex items-center gap-2 p-2 rounded-md bg-secondary/50 border border-border/60">
+                    <FileKey size={14} className="text-primary shrink-0" />
+                    <span className="text-xs flex-1 truncate font-mono" title={keyPath}>
+                      {keyPath}
+                    </span>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className="h-6 w-6 shrink-0"
+                      onClick={() => {
+                        const paths = form.identityFilePaths?.filter((_, i) => i !== idx) || [];
+                        update("identityFilePaths", paths.length > 0 ? paths : undefined);
+                      }}
+                    >
+                      <Trash2 size={12} />
+                    </Button>
+                  </div>
+                ))}
+              </div>
+            )}
+
             {/* Selected credential display */}
             {!selectedIdentity && form.identityFileId && (
               <div className="flex items-center gap-2 p-2 rounded-md bg-secondary/50 border border-border/60">
@@ -965,6 +1081,20 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                           {t("hostDetails.credential.certificate")}
                         </span>
                       </button>
+
+                      <button
+                        type="button"
+                        className="w-full flex items-center gap-3 px-3 py-2.5 rounded-md hover:bg-secondary/80 transition-colors text-left"
+                        onClick={() => {
+                          setSelectedCredentialType("localKeyFile");
+                          setCredentialPopoverOpen(false);
+                        }}
+                      >
+                        <FileKey size={16} className="text-muted-foreground" />
+                        <span className="text-sm font-medium">
+                          {t("hostDetails.credential.localKeyFile")}
+                        </span>
+                      </button>
                     </div>
                   </PopoverContent>
                 </Popover>
@@ -986,6 +1116,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                     onValueChange={(val) => {
                       update("identityFileId", val);
                       update("authMethod", "key");
+                      update("identityFilePaths", undefined);
                       setSelectedCredentialType(null);
                     }}
                     placeholder={t("hostDetails.keys.search")}
@@ -1021,6 +1152,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                     onValueChange={(val) => {
                       update("identityFileId", val);
                       update("authMethod", "certificate");
+                      update("identityFilePaths", undefined);
                       setSelectedCredentialType(null);
                     }}
                     placeholder={t("hostDetails.certs.search")}
@@ -1040,6 +1172,67 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                   </Button>
                 </div>
               )}
+
+            {/* Local key file path input - appears after selecting "Local Key File" type */}
+            {!selectedIdentity &&
+              selectedCredentialType === "localKeyFile" &&
+              !form.identityFileId && (
+                <div className="space-y-1.5">
+                  <div className="flex items-center gap-1">
+                    <input
+                      type="text"
+                      className="flex-1 h-8 px-2 text-xs font-mono bg-background border border-border/60 rounded-md focus:outline-none focus:ring-1 focus:ring-ring"
+                      placeholder={t("hostDetails.credential.localKeyFilePlaceholder")}
+                      value={newKeyFilePath}
+                      onChange={(e) => setNewKeyFilePath(e.target.value)}
+                      onKeyDown={(e) => {
+                        if (e.key === "Enter" && newKeyFilePath.trim()) {
+                          e.preventDefault();
+                          const paths = [...(form.identityFilePaths || []), newKeyFilePath.trim()];
+                          update("identityFilePaths", paths);
+                          update("identityFileId", undefined);
+                          update("authMethod", "key");
+                          setNewKeyFilePath("");
+                        }
+                      }}
+                    />
+                    <Button
+                      variant="secondary"
+                      size="icon"
+                      className="h-8 w-8 shrink-0"
+                      title={t("hostDetails.credential.browseKeyFile")}
+                      onClick={async () => {
+                        const bridge = (window as unknown as { netcatty?: NetcattyBridge }).netcatty;
+                        if (!bridge?.selectFile) return;
+                        const filePath = await bridge.selectFile(
+                          "Select SSH Private Key",
+                          undefined,
+                          [{ name: "All Files", extensions: ["*"] }]
+                        );
+                        if (filePath) {
+                          const paths = [...(form.identityFilePaths || []), filePath];
+                          update("identityFilePaths", paths);
+                          update("identityFileId", undefined);
+                          update("authMethod", "key");
+                        }
+                      }}
+                    >
+                      <FolderOpen size={14} />
+                    </Button>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className="h-8 w-8 shrink-0"
+                      onClick={() => {
+                        setSelectedCredentialType(null);
+                        setNewKeyFilePath("");
+                      }}
+                    >
+                      <X size={14} />
+                    </Button>
+                  </div>
+                </div>
+              )}
           </div>
         </Card>
 
@@ -1100,6 +1293,113 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
             </p>
           </div>
 
+          {form.os === "linux" && (
+            <div className="space-y-2 rounded-lg border border-border/70 bg-secondary/30 p-3">
+              <div className="flex items-start gap-2">
+                <Globe size={14} className="mt-0.5 text-muted-foreground" />
+                <div className="space-y-0.5">
+                  <p className="text-xs font-semibold">{t("hostDetails.distro.title")}</p>
+                  <p className="text-xs text-muted-foreground">{t("hostDetails.distro.desc")}</p>
+                </div>
+              </div>
+
+              <div className="grid gap-2 md:grid-cols-2">
+                <div className="space-y-1">
+                  <span className="text-xs text-muted-foreground">{t("hostDetails.distro.mode")}</span>
+                  <Select
+                    value={form.distroMode || "auto"}
+                    onValueChange={(val) => handleDistroModeChange(val as "auto" | "manual")}
+                  >
+                    <SelectTrigger className="h-8" aria-label={t("hostDetails.distro.mode")}>
+                      <span className="truncate whitespace-nowrap pr-2 text-left">
+                        {form.distroMode === "manual"
+                          ? t("hostDetails.distro.mode.manual")
+                          : t("hostDetails.distro.mode.auto")}
+                      </span>
+                    </SelectTrigger>
+                    <SelectContent>
+                      <SelectItem value="auto">{t("hostDetails.distro.mode.auto")}</SelectItem>
+                      <SelectItem value="manual">{t("hostDetails.distro.mode.manual")}</SelectItem>
+                    </SelectContent>
+                  </Select>
+                </div>
+
+                {form.distroMode === "manual" ? (
+                  <div className="space-y-1">
+                    <span className="text-xs text-muted-foreground">{t("hostDetails.distro.manualLabel")}</span>
+                    <Select
+                      value={form.manualDistro}
+                      onValueChange={(val) => update("manualDistro", val)}
+                    >
+                      <SelectTrigger className="h-8" aria-label={t("hostDetails.distro.manualLabel")}>
+                        {(() => {
+                          const selectedOption = distroOptions.find((option) => option.value === form.manualDistro);
+                          return selectedOption ? (
+                            <div className="flex min-w-0 items-center gap-2 pr-2">
+                              <div
+                                className={cn(
+                                  "flex h-4 w-4 shrink-0 items-center justify-center overflow-hidden rounded-[2px]",
+                                  selectedOption.bgClass,
+                                )}
+                              >
+                                {selectedOption.icon ? (
+                                  <img
+                                    src={selectedOption.icon}
+                                    alt={selectedOption.label}
+                                    className="h-3 w-3 object-contain invert brightness-0"
+                                  />
+                                ) : (
+                                  <div className="h-2 w-2 rounded-full bg-white/70" />
+                                )}
+                              </div>
+                              <span className="truncate whitespace-nowrap">{selectedOption.label}</span>
+                            </div>
+                          ) : (
+                            <SelectValue placeholder={t("hostDetails.distro.unknown")} />
+                          );
+                        })()}
+                      </SelectTrigger>
+                      <SelectContent className="min-w-[14rem]">
+                        {distroOptions.map((option) => (
+                          <SelectItem key={option.value} value={option.value}>
+                            <div className="flex items-center gap-2">
+                              <div
+                                className={cn(
+                                  "flex h-4 w-4 shrink-0 items-center justify-center overflow-hidden rounded-[2px]",
+                                  option.bgClass,
+                                )}
+                              >
+                                {option.icon ? (
+                                  <img
+                                    src={option.icon}
+                                    alt={option.label}
+                                    className="h-3 w-3 object-contain invert brightness-0"
+                                  />
+                                ) : (
+                                  <div className="h-2 w-2 rounded-full bg-white/70" />
+                                )}
+                              </div>
+                              <span className="whitespace-nowrap">{option.label}</span>
+                            </div>
+                          </SelectItem>
+                        ))}
+                      </SelectContent>
+                    </Select>
+                  </div>
+                ) : (
+                  <div className="space-y-1">
+                    <span className="text-xs text-muted-foreground">{t("hostDetails.distro.detectedLabel")}</span>
+                    <div className="flex h-8 items-center rounded-md border border-border/60 bg-background/50 px-3 text-sm">
+                      {effectiveFormDistro
+                        ? getDistroOptionLabel(effectiveFormDistro)
+                        : t("hostDetails.distro.unknown")}
+                    </div>
+                  </div>
+                )}
+              </div>
+            </div>
+          )}
+
           {/* SSH Theme Selection */}
           <button
             type="button"
@@ -1110,15 +1410,15 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
               className="w-12 h-8 rounded-md border border-border/60 flex items-center justify-center text-[6px] font-mono overflow-hidden"
               style={{
                 backgroundColor:
-                  customThemeStore.getThemeById(form.theme || "flexoki-dark")?.colors.background || "#100F0F",
+                  customThemeStore.getThemeById(effectiveThemeId)?.colors.background || "#100F0F",
                 color:
-                  customThemeStore.getThemeById(form.theme || "flexoki-dark")?.colors.foreground || "#CECDC3",
+                  customThemeStore.getThemeById(effectiveThemeId)?.colors.foreground || "#CECDC3",
               }}
             >
               <div className="p-0.5">
                 <div
                   style={{
-                    color: customThemeStore.getThemeById(form.theme || "flexoki-dark")?.colors.green,
+                    color: customThemeStore.getThemeById(effectiveThemeId)?.colors.green,
                   }}
                 >
                   $
@@ -1126,9 +1426,19 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
               </div>
             </div>
             <span className="text-sm flex-1">
-              {customThemeStore.getThemeById(form.theme || "flexoki-dark")?.name || "Flexoki Dark"}
+              {customThemeStore.getThemeById(effectiveThemeId)?.name || "Flexoki Dark"}
             </span>
           </button>
+          {hasEffectiveThemeOverride && (
+            <Button
+              variant="ghost"
+              size="sm"
+              className="w-full justify-start text-primary"
+              onClick={() => setForm((prev) => clearHostThemeOverride(prev))}
+            >
+              {t("common.useGlobal")}
+            </Button>
+          )}
 
           {/* Font Size */}
           <div className="flex items-center gap-2">
@@ -1137,11 +1447,15 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
               variant="outline"
               size="sm"
               onClick={() => {
-                if ((form.fontSize || 14) > MIN_FONT_SIZE) {
-                  update("fontSize", (form.fontSize || 14) - 1);
+                if (effectiveFontSize > MIN_FONT_SIZE) {
+                  setForm((prev) => ({
+                    ...prev,
+                    fontSize: effectiveFontSize - 1,
+                    fontSizeOverride: true,
+                  }));
                 }
               }}
-              disabled={(form.fontSize || 14) <= MIN_FONT_SIZE}
+              disabled={effectiveFontSize <= MIN_FONT_SIZE}
               className="px-2 h-8"
             >
               -
@@ -1150,25 +1464,43 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
               type="number"
               min={MIN_FONT_SIZE}
               max={MAX_FONT_SIZE}
-              value={form.fontSize || 14}
+              value={effectiveFontSize}
               onChange={(e) => {
                 const val = parseInt(e.target.value);
                 if (val >= MIN_FONT_SIZE && val <= MAX_FONT_SIZE) {
-                  update("fontSize", val);
+                  setForm((prev) => ({
+                    ...prev,
+                    fontSize: val,
+                    fontSizeOverride: true,
+                  }));
                 }
               }}
               className="w-16 text-center h-8"
             />
             <span className="text-sm text-muted-foreground">pt</span>
+            {hasEffectiveFontSizeOverride && (
+              <Button
+                variant="ghost"
+                size="sm"
+                className="ml-auto h-8 text-primary"
+                onClick={() => setForm((prev) => clearHostFontSizeOverride(prev))}
+              >
+                {t("common.useGlobal")}
+              </Button>
+            )}
             <Button
               variant="outline"
               size="sm"
               onClick={() => {
-                if ((form.fontSize || 14) < MAX_FONT_SIZE) {
-                  update("fontSize", (form.fontSize || 14) + 1);
+                if (effectiveFontSize < MAX_FONT_SIZE) {
+                  setForm((prev) => ({
+                    ...prev,
+                    fontSize: effectiveFontSize + 1,
+                    fontSizeOverride: true,
+                  }));
                 }
               }}
-              disabled={(form.fontSize || 14) >= MAX_FONT_SIZE}
+              disabled={effectiveFontSize >= MAX_FONT_SIZE}
               className="px-2 h-8"
             >
               +
@@ -1184,7 +1516,15 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
           <ToggleRow
             label="Mosh"
             enabled={!!form.moshEnabled}
-            onToggle={() => update("moshEnabled", !form.moshEnabled)}
+            onToggle={() => {
+              const enabling = !form.moshEnabled;
+              if (enabling && form.deviceType === 'network') {
+                // Network device mode is incompatible with Mosh — clear it
+                setForm(prev => ({ ...prev, moshEnabled: true, deviceType: undefined }));
+              } else {
+                update("moshEnabled", enabling);
+              }
+            }}
           />
         </Card>
 
@@ -1217,6 +1557,32 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
           )}
         </Card>
 
+        {/* Network Device Mode — only for SSH hosts without Mosh (serial already uses raw mode) */}
+        {(!form.protocol || form.protocol === 'ssh') && !form.moshEnabled && (
+        <Card className="p-3 space-y-2 bg-card border-border/80">
+          <div className="flex items-center gap-2">
+            <Router size={14} className="text-muted-foreground" />
+            <p className="text-xs font-semibold">{t("hostDetails.section.deviceType")}</p>
+          </div>
+          <ToggleRow
+            label={t("hostDetails.deviceType")}
+            enabled={form.deviceType === 'network'}
+            onToggle={() => update("deviceType", form.deviceType === 'network' ? undefined : 'network')}
+          />
+          <p className="text-xs text-muted-foreground break-words">
+            {t("hostDetails.deviceType.desc")}
+          </p>
+          {form.deviceType === 'network' && (
+            <div className="flex items-start gap-2 p-2 rounded-md bg-yellow-500/10 border border-yellow-500/20">
+              <AlertTriangle size={14} className="text-yellow-500 mt-0.5 flex-shrink-0" />
+              <p className="text-xs text-yellow-600 dark:text-yellow-400 break-words">
+                {t("hostDetails.deviceType.warning")}
+              </p>
+            </div>
+          )}
+        </Card>
+        )}
+
         {/* Legacy Algorithms */}
         <Card className="p-3 space-y-2 bg-card border-border/80">
           <div className="flex items-center gap-2">
@@ -1491,21 +1857,15 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                 className="w-12 h-8 rounded-md border border-border/60 flex items-center justify-center text-[6px] font-mono overflow-hidden"
                 style={{
                   backgroundColor:
-                    customThemeStore.getThemeById(
-                      form.protocols?.find((p) => p.protocol === "telnet")?.theme || form.theme || "flexoki-dark"
-                    )?.colors.background || "#100F0F",
+                    customThemeStore.getThemeById(effectiveTelnetThemeId)?.colors.background || "#100F0F",
                   color:
-                    customThemeStore.getThemeById(
-                      form.protocols?.find((p) => p.protocol === "telnet")?.theme || form.theme || "flexoki-dark"
-                    )?.colors.foreground || "#CECDC3",
+                    customThemeStore.getThemeById(effectiveTelnetThemeId)?.colors.foreground || "#CECDC3",
                 }}
               >
                 <div className="p-0.5">
                   <div
                     style={{
-                      color: customThemeStore.getThemeById(
-                        form.protocols?.find((p) => p.protocol === "telnet")?.theme || form.theme || "flexoki-dark"
-                      )?.colors.green,
+                      color: customThemeStore.getThemeById(effectiveTelnetThemeId)?.colors.green,
                     }}
                   >
                     $
@@ -1513,9 +1873,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                 </div>
               </div>
               <span className="text-sm flex-1">
-                {customThemeStore.getThemeById(
-                  form.protocols?.find((p) => p.protocol === "telnet")?.theme || form.theme || "flexoki-dark"
-                )?.name || "Flexoki Dark"}
+                {customThemeStore.getThemeById(effectiveTelnetThemeId)?.name || "Flexoki Dark"}
               </span>
             </button>
           </Card>

components/HostTreeView.tsx

@@ -61,6 +61,7 @@ interface TreeNodeProps {
   toggleHostSelection?: (hostId: string) => void;
 }
 
+
 const TreeNode: React.FC<TreeNodeProps> = ({
   node,
   depth,
@@ -89,6 +90,7 @@ const TreeNode: React.FC<TreeNodeProps> = ({
   const hasChildren = node.children && Object.keys(node.children).length > 0;
   const paddingLeft = `${depth * 20 + 12}px`;
   const isManaged = managedGroupPaths?.has(node.path) ?? false;
+  const hostsCountInNode = node.totalHostCount ?? node.hosts.length;
 
   const childNodes = useMemo(() => {
     if (!node.children) return [];
@@ -171,7 +173,7 @@ const TreeNode: React.FC<TreeNodeProps> = ({
                 )}
                 {(node.hosts.length > 0 || hasChildren) && (
                   <span className="text-xs opacity-70 bg-background/50 px-2 py-0.5 rounded-full border border-border">
-                    {node.hosts.length}
+                    {hostsCountInNode}
                   </span>
                 )}
               </div>

components/KeychainManager.tsx

@@ -621,7 +621,7 @@ echo $3 >> "$FILE"`);
                   </Button>
                 </DropdownTrigger>
               </div>
-              <DropdownContent className="w-44" align="start" alignToParent>
+              <DropdownContent className="w-48" align="start" alignToParent>
                 <Button
                   variant="ghost"
                   className="w-full justify-start gap-2"

components/KnownHostsManager.tsx

@@ -254,25 +254,25 @@ const KnownHostsManager: React.FC<KnownHostsManagerProps> = ({
   const RENDER_LIMIT = 100; // Limit rendered items for performance
 
   // Define handleScanSystem before useEffect that depends on it
-  const handleScanSystem = useCallback(async () => {
+  const handleScanSystem = useCallback(async (silent = false) => {
     setIsScanning(true);
     try {
       const content = await readKnownHosts();
       if (content === undefined) {
-        toast.error(
+        if (!silent) toast.error(
           t("knownHosts.toast.scanUnavailable"),
           t("vault.nav.knownHosts"),
         );
         return;
       }
       if (!content) {
-        toast.info(t("knownHosts.toast.scanNoFile"), t("vault.nav.knownHosts"));
+        if (!silent) toast.info(t("knownHosts.toast.scanNoFile"), t("vault.nav.knownHosts"));
         return;
       }
 
       const parsed = parseKnownHostsFile(content);
       if (parsed.length === 0) {
-        toast.info(
+        if (!silent) toast.info(
           t("knownHosts.toast.scanNoEntries"),
           t("vault.nav.knownHosts"),
         );
@@ -288,16 +288,16 @@ const KnownHostsManager: React.FC<KnownHostsManagerProps> = ({
 
       if (newHosts.length > 0) {
         onImportFromFile(newHosts);
-        toast.success(
+        if (!silent) toast.success(
           t("knownHosts.toast.scanImported", { count: newHosts.length }),
           t("vault.nav.knownHosts"),
         );
       } else {
-        toast.info(t("knownHosts.toast.scanNoNew"), t("vault.nav.knownHosts"));
+        if (!silent) toast.info(t("knownHosts.toast.scanNoNew"), t("vault.nav.knownHosts"));
       }
     } catch (err) {
       logger.error("Failed to scan system known_hosts:", err);
-      toast.error(
+      if (!silent) toast.error(
         err instanceof Error ? err.message : t("knownHosts.toast.scanFailed"),
         t("vault.nav.knownHosts"),
       );
@@ -307,13 +307,12 @@ const KnownHostsManager: React.FC<KnownHostsManagerProps> = ({
     }
   }, [knownHosts, onRefresh, onImportFromFile, readKnownHosts, t]);
 
-  // Auto-scan on first mount
+  // Auto-scan on first mount (silent — don't show toasts for missing known_hosts)
   useEffect(() => {
     if (!hasScannedRef.current) {
       hasScannedRef.current = true;
-      // Delay scan slightly to not block initial render
       const timer = setTimeout(() => {
-        handleScanSystem();
+        handleScanSystem(true);
       }, 100);
       return () => clearTimeout(timer);
     }
@@ -515,7 +514,7 @@ const KnownHostsManager: React.FC<KnownHostsManagerProps> = ({
             variant="ghost"
             size="sm"
             className="h-9 px-3 text-xs"
-            onClick={handleScanSystem}
+            onClick={() => handleScanSystem()}
             disabled={isScanning}
           >
             <RefreshCw
@@ -572,7 +571,7 @@ const KnownHostsManager: React.FC<KnownHostsManagerProps> = ({
               <div className="flex gap-2">
                 <Button
                   variant="secondary"
-                  onClick={handleScanSystem}
+                  onClick={() => handleScanSystem()}
                   disabled={isScanning}
                 >
                   <RefreshCw

components/PortForwardingNew.tsx

@@ -130,7 +130,9 @@ const PortForwarding: React.FC<PortForwardingProps> = ({
         const result = await startTunnel(
           rule,
           _host,
-          keys.map((k) => ({ id: k.id, privateKey: k.privateKey, passphrase: k.passphrase })),
+          hosts,
+          keys,
+          identities,
           (status, error) => {
             // Show toast on error (only once)
             if (status === "error" && error && !errorShown) {
@@ -159,7 +161,7 @@ const PortForwarding: React.FC<PortForwardingProps> = ({
         });
       }
     },
-    [hosts, keys, setRuleStatus, startTunnel, t],
+    [hosts, identities, keys, setRuleStatus, startTunnel, t],
   );
 
   // Stop a port forwarding tunnel

components/QuickConnectWizard.tsx

@@ -13,6 +13,7 @@ import {
 import React, { useMemo, useState } from "react";
 import { useI18n } from "../application/i18n/I18nProvider";
 import type { QuickConnectTarget } from "../domain/quickConnect";
+import { formatHostPort } from "../domain/host";
 import { cn } from "../lib/utils";
 import { Host, SSHKey } from "../types";
 import { Button } from "./ui/button";
@@ -531,11 +532,11 @@ const QuickConnectWizard: React.FC<QuickConnectWizardProps> = ({
       case "protocol":
         return target.hostname;
       case "username":
-        return `${protocol.toUpperCase()} ${target.hostname}:${port}`;
+        return `${protocol.toUpperCase()} ${formatHostPort(target.hostname, port)}`;
       case "knownhost":
-        return `${protocol.toUpperCase()} ${effectiveUsername}@${target.hostname}:${port}`;
+        return `${protocol.toUpperCase()} ${effectiveUsername}@${formatHostPort(target.hostname, port)}`;
       case "auth":
-        return `${protocol.toUpperCase()} ${target.hostname}:${port}`;
+        return `${protocol.toUpperCase()} ${formatHostPort(target.hostname, port)}`;
     }
   };
 

components/QuickSwitcher.tsx

@@ -2,7 +2,7 @@ import {
   Folder,
   LayoutGrid,
   Search,
-  Shield,
+  FolderLock,
   Terminal,
   TerminalSquare,
 } from "lucide-react";
@@ -98,13 +98,17 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
 
   // Reset state when opening
   useEffect(() => {
-    if (isOpen) {
-      setSelectedIndex(0);
-      // Auto focus the input after a short delay
-      setTimeout(() => {
-        inputRef.current?.focus();
-      }, 50);
-    }
+    if (!isOpen) return;
+
+    const focusTimer = window.setTimeout(() => {
+      inputRef.current?.focus();
+    }, 50);
+
+    setSelectedIndex(0);
+
+    return () => {
+      window.clearTimeout(focusTimer);
+    };
   }, [isOpen]);
 
   // Handle clicks outside the container
@@ -287,7 +291,7 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
                 const isSelected = idx === selectedIndex;
                 const icon =
                   tabId === "vault" ? (
-                    <Shield size={16} />
+                    <FolderLock size={16} />
                   ) : (
                     <Folder size={16} />
                   );

components/SFTPModal.tsx

@@ -1,817 +0,0 @@
-import React, { useCallback, useEffect, useMemo, useRef, useState } from "react";
-import { useI18n } from "../application/i18n/I18nProvider";
-import { useSftpBackend } from "../application/state/useSftpBackend";
-import { useSftpFileAssociations } from "../application/state/useSftpFileAssociations";
-import { useSettingsState } from "../application/state/useSettingsState";
-import { useSftpModalTransfers } from "./sftp-modal/hooks/useSftpModalTransfers";
-import { Host, RemoteFile, SftpFilenameEncoding } from "../types";
-import { filterHiddenFiles } from "./sftp";
-import { DropEntry } from "../lib/sftpFileUtils";
-import FileOpenerDialog from "./FileOpenerDialog";
-import TextEditorModal from "./TextEditorModal";
-import { SftpModalFileList } from "./sftp-modal/SftpModalFileList";
-import { SftpModalDialogs } from "./sftp-modal/SftpModalDialogs";
-import { SftpModalFooter } from "./sftp-modal/SftpModalFooter";
-import { SftpModalHeader } from "./sftp-modal/SftpModalHeader";
-import { SftpModalUploadTasks } from "./sftp-modal/SftpModalUploadTasks";
-import { formatBytes, formatDate } from "./sftp-modal/utils";
-import { useSftpModalSorting } from "./sftp-modal/hooks/useSftpModalSorting";
-import { useSftpModalVirtualList } from "./sftp-modal/hooks/useSftpModalVirtualList";
-import { useSftpModalPath } from "./sftp-modal/hooks/useSftpModalPath";
-import { useSftpModalSelection } from "./sftp-modal/hooks/useSftpModalSelection";
-import { useSftpModalSession } from "./sftp-modal/hooks/useSftpModalSession";
-import { useSftpModalFileActions } from "./sftp-modal/hooks/useSftpModalFileActions";
-import { useSftpModalKeyboardShortcuts } from "./sftp-modal/hooks/useSftpModalKeyboardShortcuts";
-import { joinPath, isRootPath, getParentPath } from "./sftp-modal/pathUtils";
-import { toast } from "./ui/toast";
-
-interface SFTPModalProps {
-  host: Host;
-  credentials: {
-    username?: string;
-    hostname: string;
-    port?: number;
-    password?: string;
-    privateKey?: string;
-    certificate?: string;
-    passphrase?: string;
-    publicKey?: string;
-    keyId?: string;
-    keySource?: 'generated' | 'imported';
-    proxy?: NetcattyProxyConfig;
-    jumpHosts?: NetcattyJumpHost[];
-    sftpSudo?: boolean;
-    legacyAlgorithms?: boolean;
-  };
-  open: boolean;
-  onClose: () => void;
-  /** Initial path to open in SFTP. If not accessible, falls back to home directory. */
-  initialPath?: string;
-  /** Initial entries to upload when SFTP modal opens. Used for drag-and-drop to terminal. */
-  initialEntriesToUpload?: DropEntry[];
-  /** Callback to update the host (e.g. for bookmark persistence). */
-  onUpdateHost?: (host: Host) => void;
-}
-
-const SFTPModal: React.FC<SFTPModalProps> = ({
-  host,
-  credentials,
-  open,
-  onClose,
-  initialPath,
-  initialEntriesToUpload,
-  onUpdateHost,
-}) => {
-  const {
-    openSftp,
-    closeSftp: closeSftpBackend,
-    listSftp,
-    readSftp,
-    writeSftpBinaryWithProgress,
-    writeSftpBinary,
-    writeSftp,
-    deleteSftp,
-    mkdirSftp,
-    renameSftp,
-    chmodSftp,
-    statSftp,
-    listLocalDir,
-    readLocalFile,
-    writeLocalFile,
-    deleteLocalFile,
-    mkdirLocal,
-    getHomeDir,
-    selectApplication,
-    downloadSftpToTempAndOpen,
-    cancelSftpUpload,
-    startStreamTransfer,
-    cancelTransfer,
-    showSaveDialog,
-  } = useSftpBackend();
-  const { t } = useI18n();
-  const {
-    sftpAutoSync,
-    sftpShowHiddenFiles,
-    setSftpShowHiddenFiles,
-    sftpUseCompressedUpload,
-    hotkeyScheme,
-    keyBindings,
-    editorWordWrap,
-    setEditorWordWrap,
-  } = useSettingsState();
-  const isLocalSession = host.protocol === "local";
-  const [filenameEncoding, setFilenameEncoding] = useState<SftpFilenameEncoding>(
-    host.sftpEncoding ?? "auto"
-  );
-  const [selectedFiles, setSelectedFiles] = useState<Set<string>>(new Set());
-  const inputRef = useRef<HTMLInputElement>(null);
-  const folderInputRef = useRef<HTMLInputElement>(null);
-  const navigatingRef = useRef(false);
-  const clearSelection = useCallback(() => setSelectedFiles(new Set()), []);
-
-  // Update filenameEncoding when host changes
-  useEffect(() => {
-    setFilenameEncoding(host.sftpEncoding ?? "auto");
-  }, [host.id, host.sftpEncoding]);
-
-  const listSftpWithEncoding = useCallback(
-    (sftpId: string, path: string) => listSftp(sftpId, path, filenameEncoding),
-    [listSftp, filenameEncoding],
-  );
-
-  const readSftpWithEncoding = useCallback(
-    (sftpId: string, path: string) => readSftp(sftpId, path, filenameEncoding),
-    [readSftp, filenameEncoding],
-  );
-
-  const writeSftpWithEncoding = useCallback(
-    (sftpId: string, path: string, data: string) =>
-      writeSftp(sftpId, path, data, filenameEncoding),
-    [writeSftp, filenameEncoding],
-  );
-
-  const writeSftpBinaryWithEncoding = useCallback(
-    (sftpId: string, path: string, data: ArrayBuffer) =>
-      writeSftpBinary(sftpId, path, data, filenameEncoding),
-    [writeSftpBinary, filenameEncoding],
-  );
-
-  const writeSftpBinaryWithProgressWithEncoding = useCallback(
-    (
-      sftpId: string,
-      path: string,
-      data: ArrayBuffer,
-      transferId: string,
-      onProgress?: (transferred: number, total: number, speed: number) => void,
-      onComplete?: () => void,
-      onError?: (error: string) => void,
-    ) =>
-      writeSftpBinaryWithProgress(
-        sftpId,
-        path,
-        data,
-        transferId,
-        filenameEncoding,
-        onProgress,
-        onComplete,
-        onError,
-      ),
-    [writeSftpBinaryWithProgress, filenameEncoding],
-  );
-
-  const deleteSftpWithEncoding = useCallback(
-    (sftpId: string, path: string) => deleteSftp(sftpId, path, filenameEncoding),
-    [deleteSftp, filenameEncoding],
-  );
-
-  const mkdirSftpWithEncoding = useCallback(
-    (sftpId: string, path: string) => mkdirSftp(sftpId, path, filenameEncoding),
-    [mkdirSftp, filenameEncoding],
-  );
-
-  const renameSftpWithEncoding = useCallback(
-    (sftpId: string, oldPath: string, newPath: string) =>
-      renameSftp(sftpId, oldPath, newPath, filenameEncoding),
-    [renameSftp, filenameEncoding],
-  );
-
-  const chmodSftpWithEncoding = useCallback(
-    (sftpId: string, path: string, mode: string) =>
-      chmodSftp(sftpId, path, mode, filenameEncoding),
-    [chmodSftp, filenameEncoding],
-  );
-
-  const statSftpWithEncoding = useCallback(
-    (sftpId: string, path: string) => statSftp(sftpId, path, filenameEncoding),
-    [statSftp, filenameEncoding],
-  );
-
-  const downloadSftpToTempAndOpenWithEncoding = useCallback(
-    (
-      sftpId: string,
-      remotePath: string,
-      fileName: string,
-      appPath: string,
-      options?: { enableWatch?: boolean },
-    ) =>
-      downloadSftpToTempAndOpen(sftpId, remotePath, fileName, appPath, {
-        ...options,
-        encoding: filenameEncoding,
-      }),
-    [downloadSftpToTempAndOpen, filenameEncoding],
-  );
-
-  const {
-    currentPath,
-    setCurrentPath,
-    currentPathRef,
-    files,
-    loading,
-    setLoading,
-    reconnecting,
-    sessionVersion,
-    ensureSftp,
-    loadFiles,
-    closeSftpSession,
-    localHomeRef,
-  } = useSftpModalSession({
-    open,
-    host,
-    credentials,
-    initialPath,
-    isLocalSession,
-    t,
-    openSftp,
-    closeSftp: closeSftpBackend,
-    listSftp: listSftpWithEncoding,
-    listLocalDir,
-    getHomeDir,
-    onClearSelection: clearSelection,
-  });
-
-  // Track previous encoding to detect changes
-  const prevEncodingRef = useRef(filenameEncoding);
-
-  // Force reload only when filenameEncoding changes (not on every path change)
-  useEffect(() => {
-    if (!open || isLocalSession) return;
-    // Only force reload if encoding actually changed
-    if (prevEncodingRef.current !== filenameEncoding) {
-      prevEncodingRef.current = filenameEncoding;
-      loadFiles(currentPath, { force: true });
-    }
-  }, [currentPath, filenameEncoding, isLocalSession, loadFiles, open]);
-
-  const { getOpenerForFile, setOpenerForExtension } = useSftpFileAssociations();
-
-  const { sortField, sortOrder, columnWidths, handleSort, handleResizeStart } =
-    useSftpModalSorting();
-
-  const joinPathForSession = useCallback(
-    (base: string, name: string) => joinPath(base, name, isLocalSession),
-    [isLocalSession],
-  );
-  const isRootPathForSession = useCallback(
-    (path: string) => isRootPath(path, isLocalSession),
-    [isLocalSession],
-  );
-  const getParentPathForSession = useCallback(
-    (path: string) => getParentPath(path, isLocalSession),
-    [isLocalSession],
-  );
-
-  const handleNavigate = useCallback((path: string) => {
-    // Prevent double navigation (e.g., from double-click race condition)
-    if (navigatingRef.current) return;
-    navigatingRef.current = true;
-    setCurrentPath(path);
-    // Reset lock after a short delay
-    setTimeout(() => {
-      navigatingRef.current = false;
-    }, 300);
-  }, [navigatingRef, setCurrentPath]);
-
-  const handleUp = () => {
-    if (isRootPathForSession(currentPath)) return;
-    setCurrentPath(getParentPathForSession(currentPath));
-  };
-
-  const {
-    isEditingPath,
-    editingPathValue,
-    setEditingPathValue,
-    pathInputRef,
-    handlePathDoubleClick,
-    handlePathSubmit,
-    handlePathKeyDown,
-    breadcrumbs,
-    visibleBreadcrumbs,
-    hiddenBreadcrumbs,
-    needsBreadcrumbTruncation,
-    breadcrumbPathAtForIndex,
-    rootLabel,
-    rootPath,
-  } = useSftpModalPath({
-    currentPath,
-    isLocalSession,
-    localHomePath: localHomeRef.current,
-    onNavigate: handleNavigate,
-  });
-
-  const {
-    handleDelete,
-    handleCreateFolder,
-    handleCreateFile,
-    showCreateDialog,
-    setShowCreateDialog,
-    createType,
-    createName,
-    setCreateName,
-    isCreating,
-    handleCreateSubmit,
-    showRenameDialog,
-    setShowRenameDialog,
-    renameTarget,
-    renameName,
-    setRenameName,
-    isRenaming,
-    openRenameDialog,
-    handleRename,
-    showPermissionsDialog,
-    setShowPermissionsDialog,
-    permissionsTarget,
-    permissions,
-    isChangingPermissions,
-    openPermissionsDialog,
-    togglePermission,
-    getOctalPermissions,
-    getSymbolicPermissions,
-    handleSavePermissions,
-    showFileOpenerDialog,
-    setShowFileOpenerDialog,
-    fileOpenerTarget,
-    setFileOpenerTarget,
-    openFileOpenerDialog,
-    handleFileOpenerSelect,
-    handleSelectSystemApp,
-    showTextEditor,
-    setShowTextEditor,
-    textEditorTarget,
-    setTextEditorTarget,
-    textEditorContent,
-    setTextEditorContent,
-    loadingTextContent,
-    handleEditFile,
-    handleSaveTextFile,
-    handleOpenFile,
-  } = useSftpModalFileActions({
-    currentPath,
-    isLocalSession,
-    joinPath: joinPathForSession,
-    ensureSftp,
-    loadFiles,
-    readLocalFile,
-    readSftp: readSftpWithEncoding,
-    writeLocalFile,
-    writeSftp: writeSftpWithEncoding,
-    writeSftpBinary: writeSftpBinaryWithEncoding,
-    deleteLocalFile,
-    deleteSftp: deleteSftpWithEncoding,
-    mkdirLocal,
-    mkdirSftp: mkdirSftpWithEncoding,
-    renameSftp: renameSftpWithEncoding,
-    chmodSftp: chmodSftpWithEncoding,
-    statSftp: statSftpWithEncoding,
-    t,
-    sftpAutoSync,
-    getOpenerForFile,
-    setOpenerForExtension,
-    downloadSftpToTempAndOpen: downloadSftpToTempAndOpenWithEncoding,
-    selectApplication,
-  });
-
-  const {
-    uploading,
-    uploadTasks,
-    dragActive,
-    handleDownload,
-    handleUploadEntries,
-    handleFileSelect,
-    handleFolderSelect,
-    handleDrag,
-    handleDrop,
-    cancelUpload,
-    cancelTask,
-    dismissTask,
-  } = useSftpModalTransfers({
-    currentPath,
-    currentPathRef,
-    isLocalSession,
-    joinPath: joinPathForSession,
-    ensureSftp,
-    loadFiles,
-    readLocalFile,
-    readSftp: readSftpWithEncoding,
-    writeLocalFile,
-    writeSftpBinaryWithProgress: writeSftpBinaryWithProgressWithEncoding,
-    writeSftpBinary: writeSftpBinaryWithEncoding,
-    writeSftp: writeSftpWithEncoding,
-    mkdirLocal,
-    mkdirSftp: mkdirSftpWithEncoding,
-    cancelSftpUpload,
-    startStreamTransfer,
-    cancelTransfer,
-    showSaveDialog,
-    setLoading,
-    t,
-    useCompressedUpload: sftpUseCompressedUpload,
-    listSftp: listSftpWithEncoding,
-    deleteLocalFile,
-  });
-  const hasEverOpenedRef = useRef(false);
-
-  const hasActiveTransferTasks = useMemo(
-    () =>
-      uploadTasks.some(
-        (task) =>
-          task.status === "pending" ||
-          task.status === "uploading" ||
-          task.status === "downloading",
-      ),
-    [uploadTasks],
-  );
-
-  useEffect(() => {
-    if (open) {
-      hasEverOpenedRef.current = true;
-      return;
-    }
-
-    if (!hasEverOpenedRef.current) return;
-    if (uploading || hasActiveTransferTasks) return;
-
-    void closeSftpSession();
-  }, [closeSftpSession, hasActiveTransferTasks, open, sessionVersion, uploading]);
-
-  const handleClose = async () => {
-    if (uploading || hasActiveTransferTasks) {
-      onClose();
-      return;
-    }
-
-    await closeSftpSession();
-    onClose();
-  };
-
-  // Handle initial entries to upload (from drag-and-drop to terminal)
-  const initialUploadTriggeredRef = useRef(false);
-  const prevLoadingRef = useRef(loading);
-  const prevEntriesRef = useRef<DropEntry[] | undefined>(undefined);
-  useEffect(() => {
-    // Detect when loading transitions from true to false (initial load complete)
-    const wasLoading = prevLoadingRef.current;
-    prevLoadingRef.current = loading;
-    const justFinishedLoading = wasLoading && !loading;
-
-    // Reset the flag when initialEntriesToUpload is cleared
-    if (!initialEntriesToUpload || initialEntriesToUpload.length === 0) {
-      initialUploadTriggeredRef.current = false;
-      prevEntriesRef.current = undefined;
-      return;
-    }
-
-    // Reset the flag when new entries arrive (different reference = new drop)
-    if (initialEntriesToUpload !== prevEntriesRef.current) {
-      initialUploadTriggeredRef.current = false;
-      prevEntriesRef.current = initialEntriesToUpload;
-    }
-
-    // Prevent duplicate uploads
-    if (initialUploadTriggeredRef.current) return;
-
-    // Wait for SFTP connection to be established
-    // Trigger when: modal is open AND loading just finished (works for empty directories too)
-    if (!open || loading) return;
-    if (!justFinishedLoading) return;
-
-    initialUploadTriggeredRef.current = true;
-
-    // Trigger upload with full DropEntry data (preserves directory structure)
-    void handleUploadEntries(initialEntriesToUpload);
-  }, [handleUploadEntries, initialEntriesToUpload, loading, open]);
-
-  // Display files with parent entry (like SftpView)
-  const displayFiles = useMemo(() => {
-    // Filter hidden files using utility function
-    const visibleFiles = filterHiddenFiles(files, sftpShowHiddenFiles);
-
-    // Check if we're at root
-    const atRoot = isRootPathForSession(currentPath);
-    if (atRoot) return visibleFiles;
-
-    // Add ".." parent directory entry at the top (only if not at root)
-    const parentEntry: RemoteFile = {
-      name: "..",
-      type: "directory",
-      size: "--",
-      lastModified: undefined,
-    };
-    return [parentEntry, ...visibleFiles.filter((f) => f.name !== "..")];
-  }, [files, currentPath, isRootPathForSession, sftpShowHiddenFiles]);
-
-  // Sorted files
-  const sortedFiles = useMemo(() => {
-    if (!displayFiles.length) return displayFiles;
-
-    // Keep ".." at the top, sort the rest
-    const parentEntry = displayFiles.find((f) => f.name === "..");
-    const otherFiles = displayFiles.filter((f) => f.name !== "..");
-
-    const sorted = [...otherFiles].sort((a, b) => {
-      // Directories and symlinks pointing to directories come first
-      const aIsDir = a.type === "directory" || (a.type === "symlink" && a.linkTarget === "directory");
-      const bIsDir = b.type === "directory" || (b.type === "symlink" && b.linkTarget === "directory");
-      if (aIsDir && !bIsDir) return -1;
-      if (!aIsDir && bIsDir) return 1;
-
-      let cmp = 0;
-      switch (sortField) {
-        case "name":
-          cmp = a.name.localeCompare(b.name);
-          break;
-        case "size": {
-          const sizeA =
-            typeof a.size === "number"
-              ? a.size
-              : parseInt(String(a.size), 10) || 0;
-          const sizeB =
-            typeof b.size === "number"
-              ? b.size
-              : parseInt(String(b.size), 10) || 0;
-          cmp = sizeA - sizeB;
-          break;
-        }
-        case "modified": {
-          const dateA = new Date(a.lastModified || 0).getTime();
-          const dateB = new Date(b.lastModified || 0).getTime();
-          cmp = dateA - dateB;
-          break;
-        }
-      }
-      return sortOrder === "asc" ? cmp : -cmp;
-    });
-
-    return parentEntry ? [parentEntry, ...sorted] : sorted;
-  }, [displayFiles, sortField, sortOrder]);
-  const hasFiles = files.length > 0;
-  const hasDisplayFiles = sortedFiles.length > 0;
-  const {
-    fileListRef,
-    handleFileListScroll,
-    shouldVirtualize,
-    totalHeight,
-    visibleRows,
-  } = useSftpModalVirtualList({ open, sortedFiles });
-
-
-  const { handleFileClick, handleFileDoubleClick } = useSftpModalSelection({
-    files,
-    setSelectedFiles,
-    currentPath,
-    joinPath: joinPathForSession,
-    onNavigate: handleNavigate,
-    onOpenFile: handleOpenFile,
-    onNavigateUp: handleUp,
-  });
-
-  // Keyboard shortcuts for modal
-  const handleKeyboardRename = useCallback((file: RemoteFile) => {
-    openRenameDialog(file);
-  }, [openRenameDialog]);
-
-  const handleKeyboardDelete = useCallback((fileNames: string[]) => {
-    // Find the files to pass to confirm dialog
-    if (fileNames.length === 0) return;
-    if (!confirm(t("sftp.deleteConfirm.title", { count: fileNames.length }))) return;
-
-    // Delete files
-    (async () => {
-      try {
-        for (const fileName of fileNames) {
-          const fullPath = joinPathForSession(currentPath, fileName);
-          if (isLocalSession) {
-            await deleteLocalFile(fullPath);
-          } else {
-            await deleteSftpWithEncoding(await ensureSftp(), fullPath);
-          }
-        }
-        await loadFiles(currentPath, { force: true });
-        setSelectedFiles(new Set());
-      } catch (e) {
-        toast.error(
-          e instanceof Error ? e.message : t("sftp.error.deleteFailed"),
-          "SFTP",
-        );
-      }
-    })();
-  }, [currentPath, isLocalSession, deleteLocalFile, deleteSftpWithEncoding, ensureSftp, loadFiles, setSelectedFiles, t, joinPathForSession]);
-
-  const handleKeyboardNewFolder = useCallback(() => {
-    handleCreateFolder();
-  }, [handleCreateFolder]);
-
-  useSftpModalKeyboardShortcuts({
-    keyBindings,
-    hotkeyScheme,
-    open,
-    files,
-    visibleFiles: displayFiles,
-    selectedFiles,
-    setSelectedFiles,
-    onRefresh: () => loadFiles(currentPath, { force: true }),
-    onRename: handleKeyboardRename,
-    onDelete: handleKeyboardDelete,
-    onNewFolder: handleKeyboardNewFolder,
-  });
-
-  const handleDeleteSelected = async () => {
-    if (selectedFiles.size === 0) return;
-    const fileNames = Array.from(selectedFiles);
-    if (!confirm(t("sftp.deleteConfirm.title", { count: fileNames.length }))) return;
-
-    try {
-      for (const fileName of fileNames) {
-        const fullPath = joinPathForSession(currentPath, fileName);
-        if (isLocalSession) {
-          await deleteLocalFile(fullPath);
-        } else {
-          await deleteSftpWithEncoding(await ensureSftp(), fullPath);
-        }
-      }
-      await loadFiles(currentPath, { force: true });
-      setSelectedFiles(new Set());
-    } catch (e) {
-      toast.error(
-        e instanceof Error ? e.message : t("sftp.error.deleteFailed"),
-        "SFTP",
-      );
-    }
-  };
-
-  const handleDownloadSelected = async () => {
-    if (selectedFiles.size === 0) return;
-    for (const fileName of selectedFiles) {
-      const file = files.find((f) => f.name === fileName);
-      if (file && file.type === "file") {
-        await handleDownload(file);
-      }
-    }
-  };
-
-  if (!open) return null;
-
-  return (
-    <>
-      <div className="h-full flex flex-col bg-background border-r border-border/60 overflow-hidden">
-        <SftpModalHeader
-          onClose={handleClose}
-          t={t}
-          host={host}
-          credentials={credentials}
-          showEncoding={!isLocalSession}
-          filenameEncoding={filenameEncoding}
-          onFilenameEncodingChange={setFilenameEncoding}
-          currentPath={currentPath}
-          isEditingPath={isEditingPath}
-          editingPathValue={editingPathValue}
-          setEditingPathValue={setEditingPathValue}
-          handlePathSubmit={handlePathSubmit}
-          handlePathKeyDown={handlePathKeyDown}
-          handlePathDoubleClick={handlePathDoubleClick}
-          isAtRoot={isRootPathForSession(currentPath)}
-          rootLabel={rootLabel}
-          isRefreshing={loading || reconnecting}
-          onUp={handleUp}
-          onHome={() =>
-            setCurrentPath((isLocalSession && localHomeRef.current) || rootPath)
-          }
-          onRefresh={() => loadFiles(currentPath, { force: true })}
-          visibleBreadcrumbs={visibleBreadcrumbs}
-          hiddenBreadcrumbs={hiddenBreadcrumbs}
-          needsBreadcrumbTruncation={needsBreadcrumbTruncation}
-          breadcrumbs={breadcrumbs}
-          onBreadcrumbSelect={(index) => setCurrentPath(breadcrumbPathAtForIndex(index))}
-          onRootSelect={() => setCurrentPath(rootPath)}
-          inputRef={inputRef}
-          folderInputRef={folderInputRef}
-          pathInputRef={pathInputRef}
-          uploading={uploading}
-          onTriggerUpload={() => inputRef.current?.click()}
-          onTriggerFolderUpload={() => folderInputRef.current?.click()}
-          onCreateFolder={handleCreateFolder}
-          onCreateFile={handleCreateFile}
-          onFileSelect={handleFileSelect}
-          onFolderSelect={handleFolderSelect}
-          showHiddenFiles={sftpShowHiddenFiles}
-          onToggleShowHiddenFiles={() =>
-            setSftpShowHiddenFiles(!sftpShowHiddenFiles)
-          }
-          onUpdateHost={onUpdateHost}
-          onNavigateToBookmark={(path) => setCurrentPath(path)}
-        />
-
-        <SftpModalFileList
-          t={t}
-          currentPath={currentPath}
-          isLocalSession={isLocalSession}
-          hasFiles={hasFiles}
-          hasDisplayFiles={hasDisplayFiles}
-          selectedFiles={selectedFiles}
-          dragActive={dragActive}
-          loading={loading}
-          loadingTextContent={loadingTextContent}
-          reconnecting={reconnecting}
-          columnWidths={columnWidths}
-          sortField={sortField}
-          sortOrder={sortOrder}
-          shouldVirtualize={shouldVirtualize}
-          totalHeight={totalHeight}
-          visibleRows={visibleRows}
-          fileListRef={fileListRef}
-          inputRef={inputRef}
-          folderInputRef={folderInputRef}
-          handleSort={handleSort}
-          handleResizeStart={handleResizeStart}
-          handleFileListScroll={handleFileListScroll}
-          handleDrag={handleDrag}
-          handleDrop={handleDrop}
-          handleFileClick={handleFileClick}
-          handleFileDoubleClick={handleFileDoubleClick}
-          handleDownload={handleDownload}
-          handleDelete={handleDelete}
-          handleOpenFile={handleOpenFile}
-          openFileOpenerDialog={openFileOpenerDialog}
-          handleEditFile={handleEditFile}
-          openRenameDialog={openRenameDialog}
-          openPermissionsDialog={openPermissionsDialog}
-          handleNavigate={handleNavigate}
-          handleCreateFolder={handleCreateFolder}
-          handleCreateFile={handleCreateFile}
-          handleDownloadSelected={handleDownloadSelected}
-          handleDeleteSelected={handleDeleteSelected}
-          loadFiles={loadFiles}
-          formatBytes={formatBytes}
-          formatDate={formatDate}
-        />
-
-        <SftpModalUploadTasks tasks={uploadTasks} t={t} onCancel={cancelUpload} onCancelTask={cancelTask} onDismiss={dismissTask} />
-
-        <SftpModalFooter
-          t={t}
-          files={files}
-          selectedFiles={selectedFiles}
-          loading={loading}
-          uploading={uploading}
-          onDownloadSelected={handleDownloadSelected}
-          onDeleteSelected={handleDeleteSelected}
-        />
-      </div>
-
-      <SftpModalDialogs
-        t={t}
-        showRenameDialog={showRenameDialog}
-        setShowRenameDialog={setShowRenameDialog}
-        renameTarget={renameTarget}
-        renameName={renameName}
-        setRenameName={setRenameName}
-        handleRename={handleRename}
-        isRenaming={isRenaming}
-        showPermissionsDialog={showPermissionsDialog}
-        setShowPermissionsDialog={setShowPermissionsDialog}
-        permissionsTarget={permissionsTarget}
-        permissions={permissions}
-        togglePermission={togglePermission}
-        getOctalPermissions={getOctalPermissions}
-        getSymbolicPermissions={getSymbolicPermissions}
-        handleSavePermissions={handleSavePermissions}
-        isChangingPermissions={isChangingPermissions}
-        showCreateDialog={showCreateDialog}
-        setShowCreateDialog={setShowCreateDialog}
-        createType={createType}
-        createName={createName}
-        setCreateName={setCreateName}
-        isCreating={isCreating}
-        handleCreateSubmit={handleCreateSubmit}
-      />
-
-      {/* File Opener Dialog */}
-      <FileOpenerDialog
-        open={showFileOpenerDialog}
-        onClose={() => {
-          setShowFileOpenerDialog(false);
-          setFileOpenerTarget(null);
-        }}
-        fileName={fileOpenerTarget?.name || ""}
-        onSelect={handleFileOpenerSelect}
-        onSelectSystemApp={handleSelectSystemApp}
-      />
-
-      {/* Text Editor Modal */}
-      <TextEditorModal
-        open={showTextEditor}
-        onClose={() => {
-          setShowTextEditor(false);
-          setTextEditorTarget(null);
-          setTextEditorContent("");
-        }}
-        fileName={textEditorTarget?.name || ""}
-        initialContent={textEditorContent}
-        onSave={handleSaveTextFile}
-        editorWordWrap={editorWordWrap}
-        onToggleWordWrap={() => setEditorWordWrap(!editorWordWrap)}
-      />
-    </>
-  );
-};
-
-export default SFTPModal;

components/ScriptsSidePanel.tsx

@@ -16,7 +16,7 @@ import { ScrollArea } from './ui/scroll-area';
 interface ScriptsSidePanelProps {
   snippets: Snippet[];
   packages: string[];
-  onSnippetClick: (command: string) => void;
+  onSnippetClick: (command: string, noAutoRun?: boolean) => void;
   isVisible?: boolean;
 }
 
@@ -115,8 +115,8 @@ const ScriptsSidePanelInner: React.FC<ScriptsSidePanelProps> = ({
     });
   }, [selectedPackage]);
 
-  const handleSnippetClick = useCallback((command: string) => {
-    onSnippetClick(command);
+  const handleSnippetClick = useCallback((command: string, noAutoRun?: boolean) => {
+    onSnippetClick(command, noAutoRun);
   }, [onSnippetClick]);
 
   if (!isVisible) return null;
@@ -196,7 +196,7 @@ const ScriptsSidePanelInner: React.FC<ScriptsSidePanelProps> = ({
           {displayedSnippets.map((s) => (
             <button
               key={s.id}
-              onClick={() => handleSnippetClick(s.command)}
+              onClick={() => handleSnippetClick(s.command, s.noAutoRun)}
               className="w-full text-left px-3 py-2 hover:bg-accent/50 transition-colors flex flex-col gap-0.5"
             >
               <span className="text-xs font-medium truncate">{s.label}</span>

components/SerialConnectModal.tsx

@@ -35,7 +35,7 @@ interface SerialPort {
 interface SerialConnectModalProps {
   open: boolean;
   onClose: () => void;
-  onConnect: (config: SerialConfig) => void;
+  onConnect: (config: SerialConfig, options?: { charset?: string }) => void;
   onSaveHost?: (host: Host) => void;
 }
 
@@ -65,6 +65,7 @@ export const SerialConnectModal: React.FC<SerialConnectModalProps> = ({
   const [flowControl, setFlowControl] = useState<SerialFlowControl>('none');
   const [localEcho, setLocalEcho] = useState(false);
   const [lineMode, setLineMode] = useState(false);
+  const [charset, setCharset] = useState('UTF-8');
 
   // Save configuration state
   const [saveConfig, setSaveConfig] = useState(false);
@@ -131,12 +132,13 @@ export const SerialConnectModal: React.FC<SerialConnectModalProps> = ({
         tags: ['serial'],
         protocol: 'serial',
         createdAt: Date.now(),
+        charset,
         serialConfig: config, // Store full serial configuration for connection
       };
       onSaveHost(host);
     }
 
-    onConnect(config);
+    onConnect(config, { charset });
     onClose();
   };
 
@@ -164,7 +166,7 @@ export const SerialConnectModal: React.FC<SerialConnectModalProps> = ({
 
   return (
     <Dialog open={open} onOpenChange={(isOpen) => !isOpen && onClose()}>
-      <DialogContent className="max-w-md">
+      <DialogContent className="max-w-md max-h-[85vh] flex flex-col">
         <DialogHeader>
           <DialogTitle className="flex items-center gap-2">
             <Usb size={18} />
@@ -175,7 +177,7 @@ export const SerialConnectModal: React.FC<SerialConnectModalProps> = ({
           </DialogDescription>
         </DialogHeader>
 
-        <div className="space-y-4 py-2">
+        <div className="space-y-4 py-2 overflow-y-auto flex-1 min-h-0">
           {/* Serial Port Selection */}
           <div className="space-y-2">
             <div className="flex items-center justify-between">
@@ -368,6 +370,20 @@ export const SerialConnectModal: React.FC<SerialConnectModalProps> = ({
                     className="h-4 w-4 rounded border-input"
                   />
                 </div>
+
+                {/* Charset */}
+                <div className="space-y-1">
+                  <Label htmlFor="serial-charset" className="text-sm font-medium">
+                    {t('serial.field.charset')}
+                  </Label>
+                  <Input
+                    id="serial-charset"
+                    placeholder={t("hostDetails.charset.placeholder")}
+                    value={charset}
+                    onChange={(e) => setCharset(e.target.value)}
+                    className="h-9"
+                  />
+                </div>
               </div>
             </CollapsibleContent>
           </Collapsible>

components/SerialHostDetailsPanel.tsx

@@ -66,6 +66,7 @@ export const SerialHostDetailsPanel: React.FC<SerialHostDetailsPanelProps> = ({
   const [flowControl, setFlowControl] = useState<SerialFlowControl>(initialData.serialConfig?.flowControl || 'none');
   const [localEcho, setLocalEcho] = useState(initialData.serialConfig?.localEcho || false);
   const [lineMode, setLineMode] = useState(initialData.serialConfig?.lineMode || false);
+  const [charset, setCharset] = useState(initialData.charset || 'UTF-8');
   const [tags, setTags] = useState<string[]>(initialData.tags || []);
   const [group, setGroup] = useState(initialData.group || '');
 
@@ -107,6 +108,7 @@ export const SerialHostDetailsPanel: React.FC<SerialHostDetailsPanelProps> = ({
       port: baudRate,
       tags,
       group,
+      charset,
       serialConfig: config,
     };
 
@@ -392,6 +394,20 @@ export const SerialHostDetailsPanel: React.FC<SerialHostDetailsPanelProps> = ({
                   className="h-4 w-4 rounded border-input"
                 />
               </div>
+
+              {/* Charset */}
+              <div className="space-y-1">
+                <Label htmlFor="serial-charset" className="text-sm font-medium">
+                  {t('serial.field.charset')}
+                </Label>
+                <Input
+                  id="serial-charset"
+                  placeholder={t("hostDetails.charset.placeholder")}
+                  value={charset}
+                  onChange={(e) => setCharset(e.target.value)}
+                  className="h-9"
+                />
+              </div>
             </div>
           </CollapsibleContent>
         </Collapsible>

components/SettingsApplicationTab.tsx

@@ -68,9 +68,11 @@ interface SettingsApplicationTabProps {
   checkNow: UseUpdateCheckResult['checkNow'];
   openReleasePage: UseUpdateCheckResult['openReleasePage'];
   installUpdate: UseUpdateCheckResult['installUpdate'];
+  startDownload: UseUpdateCheckResult['startDownload'];
+  isUpdateDemoMode: boolean;
 }
 
-export default function SettingsApplicationTab({ updateState, checkNow, openReleasePage, installUpdate }: SettingsApplicationTabProps) {
+export default function SettingsApplicationTab({ updateState, checkNow, openReleasePage, installUpdate, startDownload, isUpdateDemoMode }: SettingsApplicationTabProps) {
   const { t } = useI18n();
   const { openExternal, getApplicationInfo } = useApplicationBackend();
   const [appInfo, setAppInfo] = useState<AppInfo>({ name: "Netcatty", version: "" });
@@ -94,10 +96,6 @@ export default function SettingsApplicationTab({ updateState, checkNow, openRele
     };
   }, [getApplicationInfo]);
 
-  // Check if demo mode is enabled for development testing
-  const isUpdateDemoMode = typeof window !== 'undefined' &&
-    window.localStorage?.getItem('debug.updateDemo') === '1';
-
   const handleCheckForUpdates = async () => {
     // In demo mode, allow checking even for dev builds
     if (!isUpdateDemoMode && (!appInfo.version || appInfo.version === '0.0.0')) {
@@ -150,7 +148,7 @@ export default function SettingsApplicationTab({ updateState, checkNow, openRele
                 {/* Update badge - reflects auto-download state */}
                 {updateState.latestRelease && (updateState.hasUpdate || updateState.autoDownloadStatus === 'downloading' || updateState.autoDownloadStatus === 'ready') && (
                   <button
-                    onClick={() => updateState.autoDownloadStatus === 'ready' ? installUpdate() : void openReleasePage()}
+                    onClick={() => updateState.autoDownloadStatus === 'ready' ? installUpdate() : updateState.autoDownloadStatus === 'downloading' ? undefined : startDownload()}
                     className={cn(
                       "inline-flex items-center gap-1 px-2 py-0.5 rounded-full text-xs font-medium",
                       updateState.autoDownloadStatus === 'ready'
@@ -177,7 +175,7 @@ export default function SettingsApplicationTab({ updateState, checkNow, openRele
               variant="secondary"
               className="gap-2"
               onClick={() => void handleCheckForUpdates()}
-              disabled={updateState.isChecking}
+              disabled={updateState.isChecking || updateState.manualCheckStatus === 'checking' || updateState.autoDownloadStatus === 'downloading' || updateState.autoDownloadStatus === 'ready'}
             >
               {updateState.isChecking ? (
                 <Loader2 size={16} className="animate-spin" />

components/SettingsPage.tsx

@@ -2,13 +2,15 @@
  * Settings Page - Standalone settings window content
  * This component is rendered in a separate Electron window
  */
-import { AppWindow, Cloud, FileType, HardDrive, Keyboard, Palette, TerminalSquare, X } from "lucide-react";
+import { AppWindow, Cloud, FileType, HardDrive, Keyboard, Palette, Sparkles, TerminalSquare, X } from "lucide-react";
 import React, { useCallback, useEffect, useMemo, useState } from "react";
 import { useSettingsState } from "../application/state/useSettingsState";
+import { useAvailableFonts } from "../application/state/fontStore";
 import { usePortForwardingState } from "../application/state/usePortForwardingState";
 import { useVaultState } from "../application/state/useVaultState";
 import { useWindowControls } from "../application/state/useWindowControls";
 import { useUpdateCheck } from "../application/state/useUpdateCheck";
+import { useAIState } from "../application/state/useAIState";
 import { I18nProvider, useI18n } from "../application/i18n/I18nProvider";
 import SettingsApplicationTab from "./SettingsApplicationTab";
 import SettingsAppearanceTab from "./settings/tabs/SettingsAppearanceTab";
@@ -16,18 +18,91 @@ import SettingsFileAssociationsTab from "./settings/tabs/SettingsFileAssociation
 import SettingsShortcutsTab from "./settings/tabs/SettingsShortcutsTab";
 import SettingsTerminalTab from "./settings/tabs/SettingsTerminalTab";
 import SettingsSystemTab from "./settings/tabs/SettingsSystemTab";
+const SettingsAITab = React.lazy(() => import("./settings/tabs/SettingsAITab"));
 import { Tabs, TabsList, TabsTrigger } from "./ui/tabs";
-import type { TerminalFont } from "../infrastructure/config/fonts";
 
 const isMac = typeof navigator !== "undefined" && /Mac|iPhone|iPad/.test(navigator.platform);
 
-type SettingsState = ReturnType<typeof useSettingsState> & {
-    availableFonts: TerminalFont[];
-};
+class AITabErrorBoundary extends React.Component<
+  { children: React.ReactNode },
+  { error: Error | null }
+> {
+  state: { error: Error | null } = { error: null };
+  static getDerivedStateFromError(error: Error) {
+    return { error };
+  }
+  render() {
+    if (this.state.error) {
+      return (
+        <div style={{ padding: 32, color: "#f87171", fontFamily: "monospace", whiteSpace: "pre-wrap" }}>
+          <h3 style={{ marginBottom: 8 }}>AI Settings Error</h3>
+          <div>{this.state.error.message}</div>
+          <div style={{ marginTop: 8, fontSize: 12, color: "#888" }}>{this.state.error.stack}</div>
+        </div>
+      );
+    }
+    return this.props.children;
+  }
+}
+
+type SettingsState = ReturnType<typeof useSettingsState>;
 
 const SettingsSyncTab = React.lazy(() => import("./settings/tabs/SettingsSyncTab"));
 
-const SettingsSyncTabWithVault: React.FC = () => {
+const SettingsTerminalTabContainer: React.FC<{ settings: SettingsState }> = ({ settings }) => {
+    const availableFonts = useAvailableFonts();
+
+    return (
+        <SettingsTerminalTab
+            terminalThemeId={settings.terminalThemeId}
+            setTerminalThemeId={settings.setTerminalThemeId}
+            terminalFontFamilyId={settings.terminalFontFamilyId}
+            setTerminalFontFamilyId={settings.setTerminalFontFamilyId}
+            terminalFontSize={settings.terminalFontSize}
+            setTerminalFontSize={settings.setTerminalFontSize}
+            terminalSettings={settings.terminalSettings}
+            updateTerminalSetting={settings.updateTerminalSetting}
+            availableFonts={availableFonts}
+        />
+    );
+};
+
+const SettingsAITabContainer: React.FC = () => {
+    const aiState = useAIState();
+
+    return (
+        <AITabErrorBoundary>
+            <React.Suspense fallback={<div className="flex-1 px-6 py-5 text-sm text-muted-foreground">Loading AI settings...</div>}>
+                <SettingsAITab
+                    providers={aiState.providers}
+                    addProvider={aiState.addProvider}
+                    updateProvider={aiState.updateProvider}
+                    removeProvider={aiState.removeProvider}
+                    activeProviderId={aiState.activeProviderId}
+                    setActiveProviderId={aiState.setActiveProviderId}
+                    activeModelId={aiState.activeModelId}
+                    setActiveModelId={aiState.setActiveModelId}
+                    globalPermissionMode={aiState.globalPermissionMode}
+                    setGlobalPermissionMode={aiState.setGlobalPermissionMode}
+                    externalAgents={aiState.externalAgents}
+                    setExternalAgents={aiState.setExternalAgents}
+                    defaultAgentId={aiState.defaultAgentId}
+                    setDefaultAgentId={aiState.setDefaultAgentId}
+                    commandBlocklist={aiState.commandBlocklist}
+                    setCommandBlocklist={aiState.setCommandBlocklist}
+                    commandTimeout={aiState.commandTimeout}
+                    setCommandTimeout={aiState.setCommandTimeout}
+                    maxIterations={aiState.maxIterations}
+                    setMaxIterations={aiState.setMaxIterations}
+                    webSearchConfig={aiState.webSearchConfig}
+                    setWebSearchConfig={aiState.setWebSearchConfig}
+                />
+            </React.Suspense>
+        </AITabErrorBoundary>
+    );
+};
+
+const SettingsSyncTabWithVault: React.FC<{ onSettingsApplied?: () => void }> = ({ onSettingsApplied }) => {
     const {
         hosts,
         keys,
@@ -66,6 +141,7 @@ const SettingsSyncTabWithVault: React.FC = () => {
             importDataFromString={importDataFromString}
             importPortForwardingRules={importPortForwardingRules}
             clearVaultData={clearVaultData}
+            onSettingsApplied={onSettingsApplied}
         />
     );
 };
@@ -73,9 +149,13 @@ const SettingsSyncTabWithVault: React.FC = () => {
 const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }) => {
     const { t } = useI18n();
     const { notifyRendererReady, closeSettingsWindow } = useWindowControls();
-    const { updateState, checkNow, installUpdate, openReleasePage } = useUpdateCheck();
+    const { updateState, checkNow, installUpdate, openReleasePage, startDownload, isUpdateDemoMode } = useUpdateCheck({ autoUpdateEnabled: settings.autoUpdateEnabled });
     const [activeTab, setActiveTab] = useState("application");
     const [mountedTabs, setMountedTabs] = useState(() => new Set(["application"]));
+    const isImmersive = settings.immersiveMode;
+    const toggleImmersive = useCallback(() => {
+        settings.setImmersiveMode(!isImmersive);
+    }, [settings, isImmersive]);
 
     useEffect(() => {
         notifyRendererReady();
@@ -152,6 +232,12 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                         >
                             <FileType size={14} /> {t("settings.tab.sftpFileAssociations")}
                         </TabsTrigger>
+                        <TabsTrigger
+                            value="ai"
+                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                        >
+                            <Sparkles size={14} /> AI
+                        </TabsTrigger>
                         <TabsTrigger
                             value="sync"
                             className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
@@ -174,6 +260,8 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                             checkNow={checkNow}
                             openReleasePage={openReleasePage}
                             installUpdate={installUpdate}
+                            startDownload={startDownload}
+                            isUpdateDemoMode={isUpdateDemoMode}
                         />
                     )}
 
@@ -195,21 +283,13 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                             setUiLanguage={settings.setUiLanguage}
                             customCSS={settings.customCSS}
                             setCustomCSS={settings.setCustomCSS}
+                            isImmersive={isImmersive}
+                            onToggleImmersive={toggleImmersive}
                         />
                     )}
 
                     {mountedTabs.has("terminal") && (
-                        <SettingsTerminalTab
-                            terminalThemeId={settings.terminalThemeId}
-                            setTerminalThemeId={settings.setTerminalThemeId}
-                            terminalFontFamilyId={settings.terminalFontFamilyId}
-                            setTerminalFontFamilyId={settings.setTerminalFontFamilyId}
-                            terminalFontSize={settings.terminalFontSize}
-                            setTerminalFontSize={settings.setTerminalFontSize}
-                            terminalSettings={settings.terminalSettings}
-                            updateTerminalSetting={settings.updateTerminalSetting}
-                            availableFonts={settings.availableFonts}
-                        />
+                        <SettingsTerminalTabContainer settings={settings} />
                     )}
 
                     {mountedTabs.has("shortcuts") && (
@@ -228,9 +308,13 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                         <SettingsFileAssociationsTab />
                     )}
 
+                    {mountedTabs.has("ai") && (
+                        <SettingsAITabContainer />
+                    )}
+
                     {mountedTabs.has("sync") && (
                         <React.Suspense fallback={null}>
-                            <SettingsSyncTabWithVault />
+                            <SettingsSyncTabWithVault onSettingsApplied={settings.rehydrateAllFromStorage} />
                         </React.Suspense>
                     )}
 
@@ -247,10 +331,15 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                             closeToTray={settings.closeToTray}
                             setCloseToTray={settings.setCloseToTray}
                             hotkeyRegistrationError={settings.hotkeyRegistrationError}
+                            globalHotkeyEnabled={settings.globalHotkeyEnabled}
+                            setGlobalHotkeyEnabled={settings.setGlobalHotkeyEnabled}
+                            autoUpdateEnabled={settings.autoUpdateEnabled}
+                            setAutoUpdateEnabled={settings.setAutoUpdateEnabled}
                             updateState={updateState}
                             checkNow={checkNow}
                             installUpdate={installUpdate}
                             openReleasePage={openReleasePage}
+                            startDownload={startDownload}
                         />
                     )}
                 </div>

components/SftpSidePanel.tsx

@@ -11,6 +11,7 @@
  */
 
 import React, { memo, useCallback, useEffect, useMemo, useRef } from "react";
+import { formatHostPort } from "../domain/host";
 import { useI18n } from "../application/i18n/I18nProvider";
 import { useSftpState } from "../application/state/useSftpState";
 import { useSftpBackend } from "../application/state/useSftpBackend";
@@ -101,7 +102,14 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
   }), [fileWatchHandlers, sftpUseCompressedUpload, sftpShowHiddenFiles]);
 
   const sftp = useSftpState(hosts, keys, identities, sftpOptions);
-  const { showSaveDialog, startStreamTransfer } = useSftpBackend();
+  const {
+    showSaveDialog,
+    selectDirectory,
+    startStreamTransfer,
+    listSftp,
+    mkdirLocal,
+    deleteLocalFile,
+  } = useSftpBackend();
 
   const sftpRef = useRef(sftp);
   sftpRef.current = sftp;
@@ -153,7 +161,11 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
     getOpenerForFileRef,
     setOpenerForExtension,
     t,
+    listSftp,
+    mkdirLocal,
+    deleteLocalFile,
     showSaveDialog,
+    selectDirectory,
     startStreamTransfer,
     getSftpIdForConnection: sftp.getSftpIdForConnection,
   });
@@ -183,17 +195,12 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
   // Maps tab IDs to the connectionKey used to create them, so we can
   // correctly identify tabs when the same host ID has different overrides.
   const tabConnectionKeyMapRef = useRef<Map<string, string>>(new Map());
-  const pendingConnectionKeyRef = useRef<string | null>(null);
-  const prevIsVisibleRef = useRef(isVisible);
 
-  // Reset location guard when the panel is reopened so the terminal cwd
-  // is re-applied even if it matches the previous session's path.
-  useEffect(() => {
-    if (isVisible && !prevIsVisibleRef.current) {
-      lastAppliedInitialLocationKeyRef.current = null;
-    }
-    prevIsVisibleRef.current = isVisible;
-  }, [isVisible]);
+  // NOTE: We intentionally do NOT reset lastAppliedInitialLocationKeyRef on
+  // visibility changes. When the user switches terminal tabs, the panel
+  // toggles isVisible but should preserve its navigation state (the user may
+  // have navigated away from initialLocation). When the panel is truly
+  // closed, the component unmounts and all refs are naturally reset.
 
   // Navigate SFTP to the terminal's current working directory
   const handleGoToTerminalCwd = useCallback(async () => {
@@ -206,14 +213,12 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
 
   // Track whether there's active work that should block connection switching.
   // Computed outside the effect so it can be in the dependency array.
-  const hasActiveTransfers = useMemo(
-    () => sftp.transfers.some((t) => t.status === "pending" || t.status === "transferring"),
-    [sftp.transfers],
-  );
-  // Block host-following while any connection-sensitive UI or operation
-  // is active: text editor, permissions dialog, file-opener dialog, or
+  // Block host-following while any connection-sensitive interactive UI is
+  // active: text editor, permissions dialog, file-opener dialog, or
   // auto-synced external file watches.
-  const hasActiveWork = hasActiveTransfers || showTextEditor || !!permissionsState || showFileOpenerDialog
+  // Note: transfers are NOT included here — they run on their own sftpId
+  // independent of the active tab, and forceNewTab preserves old connections.
+  const hasActiveWork = showTextEditor || !!permissionsState || showFileOpenerDialog
     || (sftp.activeFileWatchCountRef?.current ?? 0) > 0;
 
   useEffect(() => {
@@ -298,28 +303,24 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
       return;
     }
 
-    // Create a new tab when there's already an active connection to a different
-    // host, so the previous tab is preserved for instant switching on focus change.
+    // Create a new tab when there's already an active connection, so the
+    // previous tab is preserved for instant switching on focus change.
+    // This covers both different hosts AND same host with different
+    // session-time overrides (port/protocol), preventing the old SFTP
+    // session from being closed while it may have in-flight transfers.
     const currentConn = s.leftPane.connection;
-    const needsNewTab = !!(currentConn && currentConn.status === "connected" && currentConn.hostId !== activeHost.id);
+    const needsNewTab = !!(currentConn && currentConn.status === "connected");
 
     connectedKeyRef.current = connectionKey;
     connectedHostObjRef.current = activeHost;
-    // Store the pending key so the effect below can map it once the tab is created
-    pendingConnectionKeyRef.current = connectionKey;
-    s.connect("left", activeHost, needsNewTab ? { forceNewTab: true } : undefined);
+    s.connect("left", activeHost, {
+      ...(needsNewTab ? { forceNewTab: true } : undefined),
+      onTabCreated: (tabId) => {
+        tabConnectionKeyMapRef.current.set(tabId, connectionKey);
+      },
+    });
   }, [activeHost, hasActiveWork]); // Re-evaluate when work finishes so deferred switch can proceed
 
-  // Track the active tab's connectionKey after connect() creates or reuses it.
-  // Watches both activeTabId (new tab) and connection status (reused tab reconnecting).
-  useEffect(() => {
-    const activeTabId = sftp.leftTabs.activeTabId;
-    if (activeTabId && pendingConnectionKeyRef.current) {
-      tabConnectionKeyMapRef.current.set(activeTabId, pendingConnectionKeyRef.current);
-      pendingConnectionKeyRef.current = null;
-    }
-  }, [sftp.leftTabs.activeTabId, sftp.leftPane.connection?.status]);
-
   // Clear the remembered connection key when the pane disconnects or the
   // session is lost, so re-opening SFTP for the same terminal reconnects.
   // Also reset the file-watch counter — watches are bound to the SFTP session,
@@ -425,10 +426,19 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
   ]);
 
   const MAX_VISIBLE_TRANSFERS = 5;
-  const visibleTransfers = useMemo(
-    () => [...sftp.transfers].reverse().slice(0, MAX_VISIBLE_TRANSFERS),
-    [sftp.transfers],
-  );
+  const visibleTransfers = useMemo(() => {
+    const connection = sftp.leftPane.connection;
+    if (!connection) return [];
+    // Filter transfers to those relevant to the active connection's host,
+    // so workspace focus switches don't show transfers from other hosts.
+    const filtered = sftp.transfers.filter((t) => {
+      if (connection.isLocal) {
+        return t.sourceConnectionId === connection.id || t.targetConnectionId === connection.id;
+      }
+      return t.targetHostId === connection.hostId || t.sourceConnectionId === connection.id || t.targetConnectionId === connection.id;
+    });
+    return [...filtered].reverse().slice(0, MAX_VISIBLE_TRANSFERS);
+  }, [sftp.transfers, sftp.leftPane.connection]);
 
   const handleRevealTransferTarget = useCallback(
     async (task: TransferTask) => {
@@ -509,7 +519,7 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
               />
               <div
                 className="min-w-0 flex-1 max-w-[calc(100%-1.75rem)] text-[11px] leading-5 truncate"
-                title={`${displayHost.label} · ${(displayHost.username || "root")}@${displayHost.hostname}:${displayHost.port || 22}`}
+                title={`${displayHost.label} · ${(displayHost.username || "root")}@${formatHostPort(displayHost.hostname, displayHost.port || 22)}`}
               >
                 <span className="font-medium">
                   {displayHost.label}

components/SftpView.tsx

@@ -19,10 +19,11 @@ import { useI18n } from "../application/i18n/I18nProvider";
 import { useIsSftpActive } from "../application/state/activeTabStore";
 import { useSftpState } from "../application/state/useSftpState";
 import { useSftpBackend } from "../application/state/useSftpBackend";
-import { useSettingsState } from "../application/state/useSettingsState";
+import { HotkeyScheme, KeyBinding } from "../domain/models";
 import { logger } from "../lib/logger";
 import { useRenderTracker } from "../lib/useRenderTracker";
 import { cn } from "../lib/utils";
+import { useInstantThemeSwitch } from "../lib/useInstantThemeSwitch";
 import { Host, Identity, SSHKey } from "../types";
 import { useSftpFileAssociations } from "../application/state/useSftpFileAssociations";
 import { toast } from "./ui/toast";
@@ -49,21 +50,35 @@ interface SftpViewProps {
   keys: SSHKey[];
   identities: Identity[];
   updateHosts: (hosts: Host[]) => void;
+  sftpDoubleClickBehavior: "open" | "transfer";
+  sftpAutoSync: boolean;
+  sftpShowHiddenFiles: boolean;
+  sftpUseCompressedUpload: boolean;
+  hotkeyScheme: HotkeyScheme;
+  keyBindings: KeyBinding[];
+  editorWordWrap: boolean;
+  setEditorWordWrap: (enabled: boolean) => void;
 }
 
-const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updateHosts }) => {
+const SftpViewInner: React.FC<SftpViewProps> = ({
+  hosts,
+  keys,
+  identities,
+  updateHosts,
+  sftpDoubleClickBehavior,
+  sftpAutoSync,
+  sftpShowHiddenFiles,
+  sftpUseCompressedUpload,
+  hotkeyScheme,
+  keyBindings,
+  editorWordWrap,
+  setEditorWordWrap,
+}) => {
   const { t } = useI18n();
   const isActive = useIsSftpActive();
-  const {
-    sftpDoubleClickBehavior,
-    sftpAutoSync,
-    sftpShowHiddenFiles,
-    sftpUseCompressedUpload,
-    hotkeyScheme,
-    keyBindings,
-    editorWordWrap,
-    setEditorWordWrap,
-  } = useSettingsState();
+  const rootRef = useRef<HTMLDivElement>(null);
+
+  useInstantThemeSwitch(rootRef);
 
   // File watch event handlers (stable refs to avoid re-creating the useSftpState options)
   const fileWatchHandlers = useMemo(() => ({
@@ -86,8 +101,15 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
 
   const sftp = useSftpState(hosts, keys, identities, sftpOptions);
 
-  // Get stream transfer functions for optimized downloads
-  const { showSaveDialog, startStreamTransfer } = useSftpBackend();
+  // Get backend helpers for file downloads and local filesystem writes.
+  const {
+    showSaveDialog,
+    selectDirectory,
+    startStreamTransfer,
+    listSftp,
+    mkdirLocal,
+    deleteLocalFile,
+  } = useSftpBackend();
 
   // Store sftp in a ref so callbacks can access the latest instance
   // without needing to re-create when sftp changes
@@ -176,7 +198,11 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
     getOpenerForFileRef,
     setOpenerForExtension,
     t,
+    listSftp,
+    mkdirLocal,
+    deleteLocalFile,
     showSaveDialog,
+    selectDirectory,
     startStreamTransfer,
     getSftpIdForConnection: sftp.getSftpIdForConnection,
   });
@@ -235,6 +261,7 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
       rightCallbacks={rightCallbacks}
     >
       <div
+        ref={rootRef}
         className={cn(
           "absolute inset-0 min-h-0 flex flex-col",
           isActive ? "z-20" : "",
@@ -397,7 +424,17 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
 };
 
 const sftpViewAreEqual = (prev: SftpViewProps, next: SftpViewProps): boolean =>
-  prev.hosts === next.hosts && prev.keys === next.keys && prev.identities === next.identities;
+  prev.hosts === next.hosts &&
+  prev.keys === next.keys &&
+  prev.identities === next.identities &&
+  prev.sftpDoubleClickBehavior === next.sftpDoubleClickBehavior &&
+  prev.sftpAutoSync === next.sftpAutoSync &&
+  prev.sftpShowHiddenFiles === next.sftpShowHiddenFiles &&
+  prev.sftpUseCompressedUpload === next.sftpUseCompressedUpload &&
+  prev.hotkeyScheme === next.hotkeyScheme &&
+  prev.keyBindings === next.keyBindings &&
+  prev.editorWordWrap === next.editorWordWrap &&
+  prev.setEditorWordWrap === next.setEditorWordWrap;
 
 export const SftpView = memo(SftpViewInner, sftpViewAreEqual);
 SftpView.displayName = "SftpView";

components/SnippetsManager.tsx

@@ -28,6 +28,7 @@ interface SnippetsManagerProps {
   hotkeyScheme: HotkeyScheme;
   keyBindings: KeyBinding[];
   onSave: (snippet: Snippet) => void;
+  onBulkSave: (snippets: Snippet[]) => void;
   onDelete: (id: string) => void;
   onPackagesChange: (packages: string[]) => void;
   onRunSnippet?: (snippet: Snippet, targetHosts: Host[]) => void;
@@ -51,6 +52,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
   hotkeyScheme,
   keyBindings,
   onSave,
+  onBulkSave,
   onDelete,
   onPackagesChange,
   onRunSnippet,
@@ -300,6 +302,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
         package: editingSnippet.package || '',
         targets: targetSelection,
         shortkey: editingSnippet.shortkey,
+        noAutoRun: editingSnippet.noAutoRun,
       });
       setRightPanelMode('none');
     }
@@ -436,8 +439,8 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
     const name = newPackageName.trim();
     if (!name) return;
     
-    // Allow leading slash and validate the rest - allow hyphens anywhere in package names
-    if (!/^\/?([\w-]+(\/[\w-]+)*)\/?$/.test(name)) {
+    // Allow leading slash and validate the rest - allow hyphens and Unicode letters/numbers
+    if (!/^\/?([\w\p{L}\p{N}-]+(\/[\w\p{L}\p{N}-]+)*)\/?$/u.test(name)) {
       // Could add toast notification here for invalid characters
       return;
     }
@@ -486,11 +489,8 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
     // Update packages first, then save snippets
     onPackagesChange(keep);
     
-    // Only save snippets that were actually modified
-    const modifiedSnippets = updatedSnippets.filter((s, index) => 
-      s.package !== snippets[index].package
-    );
-    modifiedSnippets.forEach(onSave);
+    // Bulk-save all snippets to avoid stale-closure overwrites
+    onBulkSave(updatedSnippets);
     
     // Reset selected package if it was deleted
     if (selectedPackage && (selectedPackage === path || selectedPackage.startsWith(path + '/'))) {
@@ -527,7 +527,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
     });
 
     onPackagesChange(Array.from(new Set(updatedPackages)));
-    updatedSnippets.forEach(onSave);
+    onBulkSave(updatedSnippets);
     if (selectedPackage === source) setSelectedPackage(newPath);
   };
 
@@ -550,9 +550,9 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
       return;
     }
 
-    // Validate: same rules as createPackage - only allow letters, numbers, hyphens, underscores
+    // Validate: same rules as createPackage - allow Unicode letters, numbers, hyphens, underscores
     // Since we're renaming a single segment (no slashes allowed), use the segment-level pattern
-    if (!/^[\w-]+$/.test(newName)) {
+    if (!/^[\w\p{L}\p{N}-]+$/u.test(newName)) {
       setRenameError(t('snippets.renameDialog.error.invalidChars'));
       return;
     }
@@ -568,8 +568,8 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
       return;
     }
 
-    // Validate: duplicate (case-insensitive)
-    const existingPackage = packages.find(p => p.toLowerCase() === newPath.toLowerCase());
+    // Validate: duplicate (case-insensitive), excluding the package being renamed
+    const existingPackage = packages.find(p => p !== renamingPackagePath && p.toLowerCase() === newPath.toLowerCase());
     if (existingPackage) {
       setRenameError(t('snippets.renameDialog.error.duplicate'));
       return;
@@ -595,7 +595,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
     });
 
     onPackagesChange(Array.from(new Set(updatedPackages)));
-    updatedSnippets.forEach(onSave);
+    onBulkSave(updatedSnippets);
 
     // Update selected package if it was renamed
     if (selectedPackage === renamingPackagePath) {
@@ -792,6 +792,17 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
               />
             </Card>
 
+            {/* No Auto Run */}
+            <label className="flex items-center gap-2 cursor-pointer px-1">
+              <input
+                type="checkbox"
+                checked={editingSnippet.noAutoRun ?? false}
+                onChange={(e) => setEditingSnippet({ ...editingSnippet, noAutoRun: e.target.checked || undefined })}
+                className="rounded border-input"
+              />
+              <span className="text-xs text-muted-foreground">{t('snippets.field.noAutoRun')}</span>
+            </label>
+
             {/* Shortkey */}
             <Card className="p-3 space-y-2 bg-card border-border/80">
               <div className="flex items-center justify-between">
@@ -1192,7 +1203,6 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
                 value={newPackageName}
                 onChange={(e) => setNewPackageName(e.target.value)}
                 onKeyDown={(e) => e.key === 'Enter' && createPackage()}
-                pattern="^/?([\w-]+(/[\w-]+)*)?/?$"
                 title="Package names can contain letters, numbers, hyphens, underscores, and forward slashes. Can optionally start with /"
               />
               <p className="text-[11px] text-muted-foreground">{t('snippets.packageDialog.hint')}</p>

components/Terminal.tsx

@@ -4,11 +4,11 @@ import { SerializeAddon } from "@xterm/addon-serialize";
 import { SearchAddon } from "@xterm/addon-search";
 import "@xterm/xterm/css/xterm.css";
 import { Cpu, HardDrive, Maximize2, MemoryStick, Radio, ArrowDownToLine, ArrowUpFromLine } from "lucide-react";
-import React, { memo, useEffect, useMemo, useRef, useState } from "react";
-// flushSync removed - no longer needed
+import React, { memo, useCallback, useEffect, useLayoutEffect, useMemo, useRef, useState } from "react";
+import ReactDOM from "react-dom";
 import { useI18n } from "../application/i18n/I18nProvider";
 import { logger } from "../lib/logger";
-import { cn } from "../lib/utils";
+import { cn, normalizeLineEndings, wrapBracketedPaste } from "../lib/utils";
 import {
   Host,
   Identity,
@@ -25,6 +25,9 @@ import {
   shouldEnableNativeUserInputAutoScroll,
   shouldScrollOnTerminalInput,
 } from "../domain/terminalScroll";
+import {
+  resolveHostTerminalThemeId,
+} from "../domain/terminalAppearance";
 import { resolveHostAuth } from "../domain/sshAuth";
 import { useTerminalBackend } from "../application/state/useTerminalBackend";
 import KnownHostConfirmDialog, { HostKeyInfo } from "./KnownHostConfirmDialog";
@@ -49,6 +52,7 @@ import { useTerminalContextActions } from "./terminal/hooks/useTerminalContextAc
 import { useTerminalAuthState } from "./terminal/hooks/useTerminalAuthState";
 import { useServerStats } from "./terminal/hooks/useServerStats";
 import { extractDropEntries, getPathForFile, DropEntry } from "../lib/sftpFileUtils";
+import { useTerminalAutocomplete, AutocompletePopup } from "./terminal/autocomplete";
 
 /**
  * Extract unique root paths from drop entries for local terminal path insertion.
@@ -105,7 +109,8 @@ interface TerminalProps {
   keys: SSHKey[];
   identities: Identity[];
   snippets: Snippet[];
-  allHosts?: Host[];
+  chainHosts?: Host[];
+  themePreviewId?: string;
   knownHosts?: KnownHost[];
   isVisible: boolean;
   inWorkspace?: boolean;
@@ -118,12 +123,13 @@ interface TerminalProps {
   terminalSettings?: TerminalSettings;
   sessionId: string;
   startupCommand?: string;
+  noAutoRun?: boolean;
   serialConfig?: SerialConfig;
   hotkeyScheme?: "disabled" | "mac" | "pc";
   keyBindings?: KeyBinding[];
   onHotkeyAction?: (action: string, event: KeyboardEvent) => void;
   onStatusChange?: (sessionId: string, status: TerminalSession["status"]) => void;
-  onSessionExit?: (sessionId: string) => void;
+  onSessionExit?: (sessionId: string, evt: { exitCode?: number; signal?: number; error?: string; reason?: "exited" | "error" | "timeout" | "closed" }) => void;
   onTerminalDataCapture?: (sessionId: string, data: string) => void;
   onOsDetected?: (hostId: string, distro: string) => void;
   onCloseSession?: (sessionId: string) => void;
@@ -151,6 +157,12 @@ interface TerminalProps {
   onToggleComposeBar?: () => void;
   isWorkspaceComposeBarOpen?: boolean;
   onBroadcastInput?: (data: string, sourceSessionId: string) => void;
+  onSnippetExecutorChange?: (
+    sessionId: string,
+    executor: ((command: string, noAutoRun?: boolean) => void) | null,
+  ) => void;
+  // Session log configuration for real-time streaming
+  sessionLog?: { enabled: boolean; directory: string; format: string };
 }
 
 // Helper function to format network speed (bytes/sec) to human-readable format
@@ -171,7 +183,8 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   keys,
   identities,
   snippets,
-  allHosts = [],
+  chainHosts = [],
+  themePreviewId,
   knownHosts: _knownHosts = [],
   isVisible,
   inWorkspace,
@@ -184,6 +197,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   terminalSettings,
   sessionId,
   startupCommand,
+  noAutoRun,
   serialConfig,
   hotkeyScheme = "disabled",
   keyBindings = [],
@@ -207,6 +221,8 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   onToggleComposeBar,
   isWorkspaceComposeBarOpen,
   onBroadcastInput,
+  onSnippetExecutorChange,
+  sessionLog,
 }) => {
   // Timeout for connection - increased to 120s to allow time for keyboard-interactive (2FA) authentication
   const CONNECTION_TIMEOUT = 120000;
@@ -218,11 +234,14 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const serializeAddonRef = useRef<SerializeAddon | null>(null);
   const searchAddonRef = useRef<SearchAddon | null>(null);
   const xtermRuntimeRef = useRef<XTermRuntime | null>(null);
+  const knownCwdRef = useRef<string | undefined>(undefined);
   const disposeDataRef = useRef<(() => void) | null>(null);
   const disposeExitRef = useRef<(() => void) | null>(null);
   const sessionRef = useRef<string | null>(null);
   const hasConnectedRef = useRef(false);
   const hasRunStartupCommandRef = useRef(false);
+  const terminalDataCapturedRef = useRef(false);
+  const onTerminalDataCaptureRef = useRef(onTerminalDataCapture);
   const commandBufferRef = useRef<string>("");
   const [hasMouseTracking, setHasMouseTracking] = useState(false);
   const mouseTrackingRef = useRef(false);
@@ -230,6 +249,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
 
   const terminalSettingsRef = useRef(terminalSettings);
   terminalSettingsRef.current = terminalSettings;
+  onTerminalDataCaptureRef.current = onTerminalDataCapture;
   const isVisibleRef = useRef(isVisible);
   isVisibleRef.current = isVisible;
   const pendingOutputScrollRef = useRef(false);
@@ -238,22 +258,23 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   useEffect(() => {
     if (xtermRuntimeRef.current) {
       // Merge global rules with host-level rules
-      // Host-level rules are appended to global rules, allowing hosts to add custom highlighting
       const globalRules = terminalSettings?.keywordHighlightRules ?? [];
       const hostRules = host?.keywordHighlightRules ?? [];
 
-      // Check if highlighting is enabled at either global or host level
       const globalEnabled = terminalSettings?.keywordHighlightEnabled ?? false;
-      const hostEnabled = host?.keywordHighlightEnabled ?? false;
+      // Host-level toggle: undefined = inherit global, true/false = explicit override
+      const hostEnabled = host?.keywordHighlightEnabled;
+
+      // Global and host-level highlights are independent:
+      // global toggle controls global rules, host toggle controls host-specific rules
+      const effectiveGlobalEnabled = globalEnabled;
+      const effectiveHostEnabled = hostEnabled ?? false;
 
-      // Merge rules: include only rules from enabled sources
       const mergedRules = [
-        ...(globalEnabled ? globalRules : []),
-        ...(hostEnabled ? hostRules : [])
+        ...(effectiveGlobalEnabled ? globalRules : []),
+        ...(effectiveHostEnabled ? hostRules : [])
       ];
-
-      // Enable highlighting if either global or host-level is enabled
-      const isEnabled = globalEnabled || hostEnabled;
+      const isEnabled = effectiveGlobalEnabled || effectiveHostEnabled;
 
       xtermRuntimeRef.current.keywordHighlighter.setRules(mergedRules, isEnabled);
     }
@@ -280,6 +301,11 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const snippetsRef = useRef(snippets);
   snippetsRef.current = snippets;
 
+  // Autocomplete handler refs (set after hook initialization)
+  const autocompleteKeyEventRef = useRef<((e: KeyboardEvent) => boolean) | undefined>(undefined);
+  const autocompleteInputRef = useRef<((data: string) => void) | undefined>(undefined);
+  const autocompleteRepositionRef = useRef<(() => void) | undefined>(undefined);
+
   const terminalBackend = useTerminalBackend();
   const { resizeSession, setSessionEncoding } = terminalBackend;
 
@@ -296,6 +322,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const [showSFTP, setShowSFTP] = useState(false);
   const [progressValue, setProgressValue] = useState(15);
   const [hasSelection, setHasSelection] = useState(false);
+  const [isDisconnectedDialogDismissed, setIsDisconnectedDialogDismissed] = useState(false);
 
   const statusRef = useRef<TerminalSession["status"]>(status);
   statusRef.current = status;
@@ -330,17 +357,147 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     handleCloseSearch,
   } = terminalSearch;
 
+  // Terminal autocomplete — onAcceptText writes directly to session (no CustomEvent)
+  const autocompleteAcceptTextRef = useRef<((text: string) => void) | undefined>(undefined);
+  autocompleteAcceptTextRef.current = (text: string) => {
+    const id = sessionRef.current;
+    if (id && text) {
+      // Serial line mode: buffer text and handle local echo instead of direct send
+      if (host.protocol === "serial" && serialConfig?.lineMode) {
+        for (const ch of text) {
+          if (ch === "\r") {
+            const line = serialLineBufferRef.current + "\r";
+            terminalBackend.writeToSession(id, line);
+            serialLineBufferRef.current = "";
+            if (serialConfig?.localEcho) termRef.current?.write("\r\n");
+          } else if (ch === "\x15") {
+            if (serialConfig?.localEcho && serialLineBufferRef.current.length > 0) {
+              termRef.current?.write("\b \b".repeat(serialLineBufferRef.current.length));
+            }
+            serialLineBufferRef.current = "";
+          } else if (ch === "\b" || ch === "\x7f") {
+            if (serialLineBufferRef.current.length > 0) {
+              serialLineBufferRef.current = serialLineBufferRef.current.slice(0, -1);
+              if (serialConfig?.localEcho) termRef.current?.write("\b \b");
+            }
+          } else if (ch.charCodeAt(0) >= 32) {
+            serialLineBufferRef.current += ch;
+            if (serialConfig?.localEcho) termRef.current?.write(ch);
+          }
+        }
+        // Still update commandBuffer and broadcast for serial line mode
+        // (fall through to shared bookkeeping below — don't return early)
+      } else if (host.protocol === "serial" && serialConfig?.localEcho) {
+        // Serial character mode with local echo: echo accepted text locally
+        terminalBackend.writeToSession(id, text);
+        for (const ch of text) {
+          if (ch === "\r") {
+            termRef.current?.write("\r\n");
+          } else if (ch.charCodeAt(0) >= 32) {
+            termRef.current?.write(ch);
+          }
+        }
+      } else {
+        terminalBackend.writeToSession(id, text);
+      }
+
+      // Broadcast to other sessions if broadcast mode is enabled
+      if (isBroadcastEnabledRef.current && onBroadcastInputRef.current) {
+        onBroadcastInputRef.current(text, sessionId);
+      }
+
+      // Update command buffer for onCommandExecuted tracking
+      for (const ch of text) {
+        if (ch === "\r" || ch === "\n") {
+          const cmd = commandBufferRef.current.trim();
+          if (cmd && onCommandExecuted) onCommandExecuted(cmd, host.id, host.label, sessionId);
+          commandBufferRef.current = "";
+        } else if (ch === "\x15") {
+          // Ctrl+U: clear line — reset command buffer (fuzzy match sends this)
+          commandBufferRef.current = "";
+        } else if (ch === "\b" || ch === "\x7f") {
+          // Backspace: remove last character (Windows fuzzy replacement uses \b)
+          commandBufferRef.current = commandBufferRef.current.slice(0, -1);
+        } else if (ch.charCodeAt(0) >= 32) {
+          commandBufferRef.current += ch;
+        }
+      }
+    }
+  };
+
+  const autocomplete = useTerminalAutocomplete({
+    termRef,
+    sessionId,
+    hostId: host.id,
+    hostOs: host.os || (host.protocol === "local"
+      ? (navigator.platform?.startsWith("Win") ? "windows" : navigator.platform?.startsWith("Mac") ? "macos" : "linux")
+      : "linux"),
+    settings: terminalSettings ? {
+      enabled: terminalSettings.autocompleteEnabled ?? true,
+      showGhostText: terminalSettings.autocompleteGhostText ?? true,
+      showPopupMenu: terminalSettings.autocompletePopupMenu ?? true,
+      debounceMs: terminalSettings.autocompleteDebounceMs ?? 100,
+      minChars: terminalSettings.autocompleteMinChars ?? 1,
+      maxSuggestions: terminalSettings.autocompleteMaxSuggestions ?? 8,
+    } : undefined,
+    onAcceptText: (text) => autocompleteAcceptTextRef.current?.(text),
+    protocol: host.protocol,
+    getCwd: () => knownCwdRef.current ?? xtermRuntimeRef.current?.currentCwd,
+  });
+
+  // Wire up autocomplete handler refs so createXTermRuntime can use them
+  autocompleteKeyEventRef.current = autocomplete.handleKeyEvent;
+  autocompleteInputRef.current = autocomplete.handleInput;
+  autocompleteRepositionRef.current = autocomplete.repositionPopup;
+  const autocompleteClosePopup = autocomplete.closePopup;
+
+  useEffect(() => {
+    knownCwdRef.current = undefined;
+  }, [sessionId, host.id]);
+
+  useEffect(() => {
+    if (host.protocol === "local" || host.protocol === "serial" || host.protocol === "telnet") {
+      return;
+    }
+    if (status !== "connected" || !sessionRef.current || knownCwdRef.current) return;
+
+    let cancelled = false;
+    const timer = setTimeout(async () => {
+      if (!sessionRef.current) return;
+      try {
+        const result = await terminalBackend.getSessionPwd(sessionRef.current);
+        if (!cancelled && result.success && result.cwd) {
+          knownCwdRef.current = result.cwd;
+        }
+      } catch {
+        // Best effort only.
+      }
+    }, 150);
+
+    return () => {
+      cancelled = true;
+      clearTimeout(timer);
+    };
+  }, [host.protocol, status, terminalBackend]);
+
+  useEffect(() => {
+    if (!isVisible) {
+      autocompleteClosePopup();
+    }
+  }, [isVisible, autocompleteClosePopup]);
+
   // Check if this is a local or serial connection (doesn't need connection dialog during connecting)
   const isLocalConnection = host.protocol === "local";
   const isSerialConnection = host.protocol === "serial";
 
-  // Server stats (CPU, Memory, Disk) for Linux servers
+  // Server stats (CPU, Memory, Disk) — only for Linux/macOS
   const { stats: serverStats } = useServerStats({
     sessionId,
     enabled: terminalSettings?.showServerStats ?? true,
     refreshInterval: terminalSettings?.serverStatsRefreshInterval ?? 5,
-    isLinux: host.os === 'linux',
+    isSupportedOs: host.os === 'linux' || host.os === 'macos',
     isConnected: status === 'connected',
+    isVisible,
   });
 
   useEffect(() => {
@@ -371,28 +528,70 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const [pendingHostKeyInfo, setPendingHostKeyInfo] = useState<HostKeyInfo | null>(null);
   const pendingConnectionRef = useRef<(() => void) | null>(null);
 
+  // OSC-52 clipboard read prompt
+  const [osc52ReadPromptVisible, setOsc52ReadPromptVisible] = useState(false);
+  const osc52ReadResolverRef = useRef<((allowed: boolean) => void) | null>(null);
+  const handleOsc52ReadRequest = useCallback((): Promise<boolean> => {
+    // Reject if terminal is not visible (background tab) — user can't see the prompt
+    if (!isVisibleRef.current) return Promise.resolve(false);
+    // Reject if another prompt is already pending (avoid resolver overwrite)
+    if (osc52ReadResolverRef.current) return Promise.resolve(false);
+    return new Promise((resolve) => {
+      osc52ReadResolverRef.current = resolve;
+      setOsc52ReadPromptVisible(true);
+    });
+  }, []);
+  const handleOsc52ReadResponse = useCallback((allowed: boolean) => {
+    setOsc52ReadPromptVisible(false);
+    osc52ReadResolverRef.current?.(allowed);
+    osc52ReadResolverRef.current = null;
+    // Restore focus to terminal
+    termRef.current?.focus();
+  }, []);
+
   // Subscribe to custom theme changes so editing triggers re-render
   const customThemes = useCustomThemes();
+  const hasFontSizeOverride = host.fontSizeOverride === true || (host.fontSizeOverride === undefined && host.fontSize != null);
+  const hasFontFamilyOverride = host.fontFamilyOverride === true || (host.fontFamilyOverride === undefined && !!host.fontFamily);
+  const effectiveFontSize = useMemo(
+    () => (hasFontSizeOverride && host.fontSize != null ? host.fontSize : fontSize),
+    [fontSize, hasFontSizeOverride, host.fontSize],
+  );
+  const resolvedFontFamily = useMemo(() => {
+    const hostFontId = hasFontFamilyOverride && host.fontFamily
+      ? host.fontFamily
+      : fontFamilyId;
+    const resolvedFontId = hostFontId || "menlo";
+    return (availableFonts.find((f) => f.id === resolvedFontId) || availableFonts[0]).family;
+  }, [availableFonts, fontFamilyId, hasFontFamilyOverride, host.fontFamily]);
 
   const effectiveTheme = useMemo(() => {
-    if (host.theme) {
-      const hostTheme = TERMINAL_THEMES.find((t) => t.id === host.theme)
-        || customThemes.find((t) => t.id === host.theme);
+    const themeId = themePreviewId ?? resolveHostTerminalThemeId(
+      { theme: host.theme, themeOverride: host.themeOverride } as Pick<Host, 'theme' | 'themeOverride'>,
+      terminalTheme.id,
+    );
+    if (themeId) {
+      const hostTheme = TERMINAL_THEMES.find((t) => t.id === themeId)
+        || customThemes.find((t) => t.id === themeId);
       if (hostTheme) return hostTheme;
     }
     return terminalTheme;
-  }, [host.theme, terminalTheme, customThemes]);
+  }, [customThemes, host.theme, host.themeOverride, terminalTheme, themePreviewId]);
 
   const resolvedChainHosts =
-    (host.hostChain?.hostIds
-      ?.map((id) => allHosts.find((h) => h.id === id))
-      .filter(Boolean) as Host[]) || [];
+    chainHosts;
 
   const updateStatus = (next: TerminalSession["status"]) => {
     setStatus(next);
     hasConnectedRef.current = next === "connected";
     onStatusChange?.(sessionId, next);
   };
+  const handleTerminalDataCaptureOnce = useCallback((capturedSessionId: string, data: string) => {
+    const captureHandler = onTerminalDataCaptureRef.current;
+    if (!captureHandler || terminalDataCapturedRef.current) return;
+    terminalDataCapturedRef.current = true;
+    captureHandler(capturedSessionId, data);
+  }, []);
 
   const cleanupSession = () => {
     disposeDataRef.current?.();
@@ -427,6 +626,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     resolvedChainHosts,
     sessionId,
     startupCommand,
+    noAutoRun,
     terminalSettings,
     terminalSettingsRef,
     terminalBackend,
@@ -459,20 +659,23 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       }
     },
     onSessionExit,
-    onTerminalDataCapture,
+    onTerminalDataCapture: handleTerminalDataCaptureOnce,
     onOsDetected,
     onCommandExecuted,
+    sessionLog,
   });
   sessionStartersRef.current = sessionStarters;
 
   useEffect(() => {
     let disposed = false;
+    terminalDataCapturedRef.current = false;
     setError(null);
     hasConnectedRef.current = false;
     pendingOutputScrollRef.current = false;
     setProgressLogs([]);
     setShowLogs(false);
     setIsCancelling(false);
+    setIsDisconnectedDialogDismissed(false);
 
     const boot = async () => {
       try {
@@ -502,6 +705,13 @@ const TerminalComponent: React.FC<TerminalProps> = ({
           serialLocalEcho: serialConfig?.localEcho,
           serialLineMode: serialConfig?.lineMode,
           serialLineBufferRef,
+          onCwdChange: (cwd: string) => {
+            knownCwdRef.current = cwd;
+          },
+          onOsc52ReadRequest: handleOsc52ReadRequest,
+          // Autocomplete integration
+          onAutocompleteKeyEvent: (e: KeyboardEvent) => autocompleteKeyEventRef.current?.(e) ?? true,
+          onAutocompleteInput: (data: string) => autocompleteInputRef.current?.(data),
         });
 
         xtermRuntimeRef.current = runtime;
@@ -516,12 +726,14 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         const globalRules = terminalSettingsRef.current?.keywordHighlightRules ?? [];
         const hostRules = host?.keywordHighlightRules ?? [];
         const globalEnabled = terminalSettingsRef.current?.keywordHighlightEnabled ?? false;
-        const hostEnabled = host?.keywordHighlightEnabled ?? false;
+        const hostEnabled = host?.keywordHighlightEnabled;
+        const effectiveGlobalEnabled = globalEnabled;
+        const effectiveHostEnabled = hostEnabled ?? false;
         const mergedRules = [
-          ...(globalEnabled ? globalRules : []),
-          ...(hostEnabled ? hostRules : [])
+          ...(effectiveGlobalEnabled ? globalRules : []),
+          ...(effectiveHostEnabled ? hostRules : [])
         ];
-        const isEnabled = globalEnabled || hostEnabled;
+        const isEnabled = effectiveGlobalEnabled || effectiveHostEnabled;
         runtime.keywordHighlighter.setRules(mergedRules, isEnabled);
 
         const term = runtime.term;
@@ -574,11 +786,11 @@ const TerminalComponent: React.FC<TerminalProps> = ({
 
     return () => {
       disposed = true;
-      if (onTerminalDataCapture && serializeAddonRef.current) {
+      if (!terminalDataCapturedRef.current && serializeAddonRef.current) {
         try {
           const terminalData = serializeAddonRef.current.serialize();
           logger.info("[Terminal] Capturing data on unmount", { sessionId, dataLength: terminalData.length });
-          onTerminalDataCapture(sessionId, terminalData);
+          handleTerminalDataCaptureOnce(sessionId, terminalData);
         } catch (err) {
           logger.warn("Failed to serialize terminal data on unmount:", err);
         }
@@ -586,7 +798,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       teardown();
     };
     // eslint-disable-next-line react-hooks/exhaustive-deps -- Effect only runs on host.id/sessionId change, internal functions are stable
-  }, [host.id, sessionId]);
+  }, [handleTerminalDataCaptureOnce, host.id, sessionId]);
 
   // Connection timeline and timeout visuals
   useEffect(() => {
@@ -595,28 +807,6 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     // Local terminal and serial connections don't need timeout/progress UI
     if (isLocalConnection || isSerialConnection) return;
 
-    // Only show SSH-specific scripted logs for SSH connections
-    const isSSH = host.protocol !== "telnet";
-
-    let stepTimer: ReturnType<typeof setInterval> | undefined;
-    if (isSSH) {
-      const scripted = [
-        "Resolving host and keys...",
-        "Negotiating ciphers...",
-        "Exchanging keys...",
-        "Authenticating user...",
-        "Waiting for server greeting...",
-      ];
-      let idx = 0;
-      stepTimer = setInterval(() => {
-        setProgressLogs((prev) => {
-          if (idx >= scripted.length) return prev;
-          const next = scripted[idx++];
-          return prev.includes(next) ? prev : [...prev, next];
-        });
-      }, 900);
-    }
-
     setTimeLeft(CONNECTION_TIMEOUT / 1000);
     const countdown = setInterval(() => {
       setTimeLeft((prev) => (prev > 0 ? prev - 1 : 0));
@@ -639,7 +829,6 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     }, 200);
 
     return () => {
-      if (stepTimer) clearInterval(stepTimer);
       clearInterval(countdown);
       clearTimeout(timeout);
       clearInterval(prog);
@@ -647,6 +836,12 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     // eslint-disable-next-line react-hooks/exhaustive-deps -- updateStatus is a stable internal helper
   }, [status, auth.needsAuth, host.protocol, host.hostname]);
 
+  useEffect(() => {
+    if (status === "connecting") {
+      setIsDisconnectedDialogDismissed(false);
+    }
+  }, [status]);
+
   const safeFit = (options?: { force?: boolean; requireVisible?: boolean }) => {
     const fitAddon = fitAddonRef.current;
     if (!fitAddon) return;
@@ -668,6 +863,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     if (!options?.force) {
       const lastSize = lastFittedSizeRef.current;
       if (lastSize && lastSize.width === width && lastSize.height === height) {
+        autocompleteRepositionRef.current?.();
         return;
       }
     }
@@ -676,6 +872,13 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       try {
         lastFittedSizeRef.current = { width, height };
         fitAddon.fit();
+        if (typeof requestAnimationFrame === "function") {
+          requestAnimationFrame(() => {
+            autocompleteRepositionRef.current?.();
+          });
+        } else {
+          autocompleteRepositionRef.current?.();
+        }
       } catch (err) {
         logger.warn("Fit failed", err);
       }
@@ -691,15 +894,20 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     }
   };
 
-  useEffect(() => {
+  // Sync xterm theme before browser paint so canvas + DOM CSS vars update in the same frame
+  useLayoutEffect(() => {
     if (termRef.current) {
-      const effectiveFontSize = host.fontSize || fontSize;
-      termRef.current.options.fontSize = effectiveFontSize;
-
       termRef.current.options.theme = {
         ...effectiveTheme.colors,
         selectionBackground: effectiveTheme.colors.selection,
       };
+    }
+  }, [effectiveTheme]);
+
+  useEffect(() => {
+    if (termRef.current) {
+      termRef.current.options.fontSize = effectiveFontSize;
+      termRef.current.options.fontFamily = resolvedFontFamily;
 
       if (terminalSettings) {
         termRef.current.options.cursorStyle = terminalSettings.cursorShape;
@@ -741,6 +949,10 @@ const TerminalComponent: React.FC<TerminalProps> = ({
           terminalSettings.drawBoldInBrightColors;
         termRef.current.options.minimumContrastRatio =
           terminalSettings.minimumContrastRatio;
+        termRef.current.options.smoothScrollDuration =
+          terminalSettings.smoothScrolling
+            ? XTERM_PERFORMANCE_CONFIG.rendering.smoothScrollDuration
+            : 0;
         termRef.current.options.scrollOnUserInput =
           shouldEnableNativeUserInputAutoScroll(terminalSettings);
         termRef.current.options.altClickMovesCursor = !terminalSettings.altAsMeta;
@@ -748,27 +960,13 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         termRef.current.options.ignoreBracketedPasteMode = terminalSettings.disableBracketedPaste ?? false;
       }
 
-      setTimeout(() => safeFit({ force: true }), 50);
+      if (isVisibleRef.current) {
+        setTimeout(() => safeFit({ force: true, requireVisible: true }), 50);
+      } else {
+        lastFittedSizeRef.current = null;
+      }
     }
-  }, [fontSize, effectiveTheme, terminalSettings, host.fontSize]);
-
-  useEffect(() => {
-    if (termRef.current) {
-      const effectiveFontSize = host.fontSize || fontSize;
-      termRef.current.options.fontSize = effectiveFontSize;
-
-      const hostFontId = host.fontFamily || fontFamilyId || "menlo";
-      const fontObj = availableFonts.find((f) => f.id === hostFontId) || availableFonts[0];
-      termRef.current.options.fontFamily = fontObj.family;
-
-      termRef.current.options.theme = {
-        ...effectiveTheme.colors,
-        selectionBackground: effectiveTheme.colors.selection,
-      };
-
-      setTimeout(() => safeFit({ force: true }), 50);
-    }
-  }, [host.fontSize, host.fontFamily, host.theme, fontFamilyId, fontSize, effectiveTheme, availableFonts]);
+  }, [effectiveFontSize, resolvedFontFamily, terminalSettings]);
 
   useEffect(() => {
     if (!isVisible) return;
@@ -816,7 +1014,6 @@ const TerminalComponent: React.FC<TerminalProps> = ({
 
         if (terminalSettings && termRef.current) {
           const fontFamily = termRef.current.options?.fontFamily || "";
-          const effectiveFontSize = host.fontSize || fontSize;
           if (typeof document !== "undefined" && document.fonts?.check) {
             const weightSpec = `${terminalSettings.fontWeightBold} ${effectiveFontSize}px ${fontFamily}`;
             const resolvedBold = document.fonts.check(weightSpec)
@@ -852,7 +1049,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     return () => {
       cancelled = true;
     };
-  }, [host.id, host.fontFamily, host.fontSize, fontFamilyId, fontSize, resizeSession, sessionId, terminalSettings]);
+  }, [effectiveFontSize, resizeSession, terminalSettings]);
 
   useEffect(() => {
     if (!isVisible || !containerRef.current || !fitAddonRef.current) return;
@@ -990,6 +1187,8 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   }, [sessionId]);
 
   useEffect(() => {
+    if (!isVisible) return;
+
     let resizeTimeout: ReturnType<typeof setTimeout> | null = null;
 
     const handler = () => {
@@ -1007,7 +1206,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       if (resizeTimeout) clearTimeout(resizeTimeout);
       window.removeEventListener("resize", handler);
     };
-  }, []);
+  }, [isVisible]);
 
   const disableBracketedPasteRef = useRef(terminalSettings?.disableBracketedPaste ?? false);
   disableBracketedPasteRef.current = terminalSettings?.disableBracketedPaste ?? false;
@@ -1015,11 +1214,43 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const scrollOnPasteRef = useRef(terminalSettings?.scrollOnPaste ?? true);
   scrollOnPasteRef.current = terminalSettings?.scrollOnPaste ?? true;
 
-  const scrollToBottomAfterProgrammaticInput = (data: string) => {
+  const scrollToBottomAfterProgrammaticInput = useCallback((data: string) => {
     if (termRef.current && shouldScrollOnTerminalInput(terminalSettingsRef.current, data)) {
       termRef.current.scrollToBottom();
     }
-  };
+  }, []);
+
+  const executeSnippetCommand = useCallback((command: string, noAutoRun?: boolean) => {
+    const term = termRef.current;
+    const id = sessionRef.current;
+    if (!term || !id) return;
+
+    let data = normalizeLineEndings(command);
+    const isMultiLine = data.includes('\n');
+    // Wrap in bracketed paste BEFORE appending \r so the Enter is sent
+    // outside the paste markers — otherwise shells treat it as pasted text
+    // instead of a submit action.
+    if (isMultiLine && term.modes.bracketedPasteMode && !disableBracketedPasteRef.current) {
+      data = wrapBracketedPaste(data);
+    }
+    if (!noAutoRun) data = `${data}\r`;
+
+    terminalBackend.writeToSession(id, data);
+    scrollToBottomAfterProgrammaticInput(data);
+    term.focus();
+  }, [scrollToBottomAfterProgrammaticInput, terminalBackend]);
+
+  // Only register the snippet executor once the terminal session is ready.
+  // Before that, TerminalLayer falls back to raw writeToSession which is the
+  // correct path for sessions that are still connecting.
+  useEffect(() => {
+    if (status !== "connected") {
+      onSnippetExecutorChange?.(sessionId, null);
+      return;
+    }
+    onSnippetExecutorChange?.(sessionId, executeSnippetCommand);
+    return () => onSnippetExecutorChange?.(sessionId, null);
+  }, [executeSnippetCommand, onSnippetExecutorChange, sessionId, status]);
 
   const terminalContextActions = useTerminalContextActions({
     termRef,
@@ -1078,6 +1309,14 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     onCloseSession?.(sessionId);
   };
 
+  const handleDismissDisconnectedDialog = () => {
+    setIsDisconnectedDialogDismissed(true);
+  };
+
+  const handleCloseDisconnectedSession = () => {
+    onCloseSession?.(sessionId);
+  };
+
   const handleHostKeyClose = () => {
     setNeedsHostKeyVerification(false);
     setPendingHostKeyInfo(null);
@@ -1117,18 +1356,31 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     if (!termRef.current) return;
     cleanupSession();
     auth.resetForRetry();
+    terminalDataCapturedRef.current = false;
     hasRunStartupCommandRef.current = false;
+    setIsDisconnectedDialogDismissed(false);
     setStatus("connecting");
     setError(null);
     setProgressLogs(["Retrying secure channel..."]);
     setShowLogs(true);
-    if (host.protocol === "local" || host.hostname === "localhost") {
+    if (host.protocol === "serial") {
+      sessionStarters.startSerial(termRef.current);
+    } else if (host.protocol === "local" || host.hostname === "localhost") {
       sessionStarters.startLocal(termRef.current);
+    } else if (host.protocol === "telnet") {
+      sessionStarters.startTelnet(termRef.current);
+    } else if (host.moshEnabled) {
+      sessionStarters.startMosh(termRef.current);
     } else {
       sessionStarters.startSSH(termRef.current);
     }
   };
 
+  const shouldShowConnectionDialog = status !== "connected"
+    && !needsHostKeyVerification
+    && !((isLocalConnection || isSerialConnection) && status === "connecting")
+    && !(status === "disconnected" && isDisconnectedDialogDismissed);
+
   // Drag and drop handlers
   const handleDragEnter = (e: React.DragEvent) => {
     e.preventDefault();
@@ -1238,6 +1490,14 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       : status === "connecting"
         ? "bg-amber-400"
         : "bg-rose-500";
+  const terminalPreviewVars = useMemo(() => ({
+    ['--terminal-ui-bg' as never]: `var(--terminal-preview-bg, ${effectiveTheme.colors.background})`,
+    ['--terminal-ui-fg' as never]: `var(--terminal-preview-fg, ${effectiveTheme.colors.foreground})`,
+    ['--terminal-ui-border' as never]: `var(--terminal-preview-border, color-mix(in srgb, ${effectiveTheme.colors.foreground} 8%, ${effectiveTheme.colors.background} 92%))`,
+    ['--terminal-ui-toolbar-btn' as never]: `var(--terminal-preview-toolbar-btn, color-mix(in srgb, ${effectiveTheme.colors.background} 88%, ${effectiveTheme.colors.foreground} 12%))`,
+    ['--terminal-ui-toolbar-btn-hover' as never]: `var(--terminal-preview-toolbar-btn-hover, color-mix(in srgb, ${effectiveTheme.colors.background} 78%, ${effectiveTheme.colors.foreground} 22%))`,
+    ['--terminal-ui-toolbar-btn-active' as never]: `var(--terminal-preview-toolbar-btn-active, color-mix(in srgb, ${effectiveTheme.colors.background} 68%, ${effectiveTheme.colors.foreground} 32%))`,
+  }), [effectiveTheme.colors.background, effectiveTheme.colors.foreground]);
 
   return (
     <TerminalContextMenu
@@ -1260,6 +1520,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
           "relative h-full w-full flex overflow-hidden bg-gradient-to-br from-[#050910] via-[#06101a] to-[#0b1220]",
           isComposeBarOpen && !inWorkspace && "flex-col"
         )}
+        style={terminalPreviewVars}
         onDragEnter={handleDragEnter}
         onDragOver={handleDragOver}
         onDragLeave={handleDragLeave}
@@ -1290,14 +1551,14 @@ const TerminalComponent: React.FC<TerminalProps> = ({
           <div
             className="flex items-center gap-1 px-2 py-0.5 backdrop-blur-md pointer-events-auto min-w-0 border-b-[0.5px]"
             style={{
-              backgroundColor: effectiveTheme.colors.background,
-              color: effectiveTheme.colors.foreground,
-              borderColor: `color-mix(in srgb, ${effectiveTheme.colors.foreground} 8%, ${effectiveTheme.colors.background} 92%)`,
-              ['--terminal-toolbar-fg' as never]: effectiveTheme.colors.foreground,
-              ['--terminal-toolbar-bg' as never]: effectiveTheme.colors.background,
-              ['--terminal-toolbar-btn' as never]: `color-mix(in srgb, ${effectiveTheme.colors.background} 88%, ${effectiveTheme.colors.foreground} 12%)`,
-              ['--terminal-toolbar-btn-hover' as never]: `color-mix(in srgb, ${effectiveTheme.colors.background} 78%, ${effectiveTheme.colors.foreground} 22%)`,
-              ['--terminal-toolbar-btn-active' as never]: `color-mix(in srgb, ${effectiveTheme.colors.background} 68%, ${effectiveTheme.colors.foreground} 32%)`,
+              backgroundColor: 'var(--terminal-ui-bg)',
+              color: 'var(--terminal-ui-fg)',
+              borderColor: 'var(--terminal-ui-border)',
+              ['--terminal-toolbar-fg' as never]: 'var(--terminal-ui-fg)',
+              ['--terminal-toolbar-bg' as never]: 'var(--terminal-ui-bg)',
+              ['--terminal-toolbar-btn' as never]: 'var(--terminal-ui-toolbar-btn)',
+              ['--terminal-toolbar-btn-hover' as never]: 'var(--terminal-ui-toolbar-btn-hover)',
+              ['--terminal-toolbar-btn-active' as never]: 'var(--terminal-ui-toolbar-btn-active)',
             }}
           >
             <div className="flex items-center gap-1 text-[11px] font-semibold">
@@ -1309,8 +1570,8 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                 )}
               />
             </div>
-            {/* Server Stats Display - Linux only */}
-            {host.os === 'linux' && terminalSettings?.showServerStats && status === 'connected' && serverStats.lastUpdated && (
+            {/* Server Stats Display */}
+            {terminalSettings?.showServerStats && status === 'connected' && serverStats.lastUpdated && (
               <div className="flex items-center gap-2.5 ml-2 text-[10px] opacity-80 flex-nowrap overflow-hidden min-w-0">
                 {/* CPU with HoverCard for per-core details */}
                 <HoverCard openDelay={200} closeDelay={100}>
@@ -1357,6 +1618,24 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                             </div>
                           ))}
                         </div>
+                      ) : serverStats.cpu !== null ? (
+                        <div className="flex flex-col gap-1.5 min-w-[160px]">
+                          <div className="w-full h-2 bg-muted rounded-full overflow-hidden">
+                            <div
+                              className={cn(
+                                "h-full rounded-full transition-all",
+                                serverStats.cpu >= 90 ? "bg-red-500" : serverStats.cpu >= 70 ? "bg-amber-500" : "bg-emerald-500"
+                              )}
+                              style={{ width: `${serverStats.cpu}%` }}
+                            />
+                          </div>
+                          <div className={cn(
+                            "text-center text-[11px] font-medium",
+                            serverStats.cpu >= 90 ? "text-red-400" : serverStats.cpu >= 70 ? "text-amber-400" : "text-emerald-400"
+                          )}>
+                            {serverStats.cpu}% · {serverStats.cpuCores ?? '?'} cores
+                          </div>
+                        </div>
                       ) : (
                         <div className="text-muted-foreground">{t("terminal.serverStats.noData")}</div>
                       )}
@@ -1654,7 +1933,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
 
         <div
           className="h-full flex-1 min-w-0 relative overflow-hidden pt-8"
-          style={{ backgroundColor: effectiveTheme.colors.background }}
+          style={{ backgroundColor: 'var(--terminal-ui-bg)' }}
         >
           <div
             ref={containerRef}
@@ -1662,10 +1941,33 @@ const TerminalComponent: React.FC<TerminalProps> = ({
             style={{
               top: isSearchOpen ? "64px" : "30px",
               paddingLeft: 6,
-              backgroundColor: effectiveTheme.colors.background,
+              backgroundColor: 'var(--terminal-ui-bg)',
             }}
           />
 
+          {/* Autocomplete popup — rendered via Portal to escape overflow:hidden */}
+          {isVisible && autocomplete.state.popupVisible && autocomplete.state.suggestions.length > 0 &&
+            ReactDOM.createPortal(
+              <AutocompletePopup
+                suggestions={autocomplete.state.suggestions}
+                selectedIndex={autocomplete.state.selectedIndex}
+                position={autocomplete.state.popupPosition}
+                cursorLineTop={autocomplete.state.popupCursorLineTop}
+                cursorLineBottom={autocomplete.state.popupCursorLineBottom}
+                visible={autocomplete.state.popupVisible}
+                expandUpward={autocomplete.state.expandUpward}
+                themeColors={effectiveTheme.colors}
+                onSelect={autocomplete.selectSuggestion}
+                subDirPanels={autocomplete.state.subDirPanels}
+                subDirFocusLevel={autocomplete.state.subDirFocusLevel}
+                containerRef={containerRef}
+                onRequestReposition={autocomplete.repositionPopup}
+                searchBarOffset={isSearchOpen ? 64 : 30}
+              />,
+              document.body,
+            )
+          }
+
           {needsHostKeyVerification && pendingHostKeyInfo && (
             <div className="absolute inset-0 z-30 bg-background">
               <KnownHostConfirmDialog
@@ -1678,10 +1980,31 @@ const TerminalComponent: React.FC<TerminalProps> = ({
             </div>
           )}
 
+          {/* OSC-52 clipboard read prompt */}
+          {osc52ReadPromptVisible && (
+            <div
+              className="absolute inset-0 z-40 flex items-center justify-center bg-background/60"
+              onKeyDown={(e) => {
+                if (e.key === 'Escape') handleOsc52ReadResponse(false);
+              }}
+            >
+              <div className="rounded-lg border bg-card p-4 shadow-lg max-w-sm space-y-3">
+                <p className="text-sm font-medium">{t("terminal.osc52.readPrompt.title")}</p>
+                <p className="text-sm text-muted-foreground">{t("terminal.osc52.readPrompt.desc")}</p>
+                <div className="flex justify-end gap-2">
+                  <Button variant="secondary" size="sm" onClick={() => handleOsc52ReadResponse(false)}>
+                    {t("terminal.osc52.readPrompt.deny")}
+                  </Button>
+                  <Button size="sm" autoFocus onClick={() => handleOsc52ReadResponse(true)}>
+                    {t("terminal.osc52.readPrompt.allow")}
+                  </Button>
+                </div>
+              </div>
+            </div>
+          )}
+
           {/* Connection dialog: skip for local/serial during connecting phase, but show on error */}
-          {status !== "connected" && !needsHostKeyVerification && !(
-            (isLocalConnection || isSerialConnection) && status === "connecting"
-          ) && (
+          {shouldShowConnectionDialog && (
               <TerminalConnectionDialog
                 host={host}
                 status={status}
@@ -1692,6 +2015,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                 showLogs={showLogs}
                 _setShowLogs={setShowLogs}
                 keys={keys}
+                onDismissDisconnected={handleDismissDisconnectedDialog}
                 authProps={{
                   authMethod: auth.authMethod,
                   setAuthMethod: auth.setAuthMethod,
@@ -1717,7 +2041,8 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                   timeLeft,
                   isCancelling,
                   progressLogs,
-                  onCancel: handleCancelConnect,
+                  onCancelConnect: handleCancelConnect,
+                  onCloseSession: handleCloseDisconnectedSession,
                   onRetry: handleRetry,
                 }}
               />

components/TextEditorModal.tsx

@@ -151,6 +151,7 @@ export const TextEditorModal: React.FC<TextEditorModalProps> = ({
   // Ref to store the latest save function to avoid stale closure in keyboard shortcut
   const handleSaveRef = useRef<() => Promise<void>>(() => Promise.resolve());
   const handlePasteRef = useRef<() => Promise<void>>(() => Promise.resolve());
+  const readClipboardTextRef = useRef<() => Promise<string | null>>(() => Promise.resolve(null));
 
   // Track theme from document.documentElement class (syncs with app theme)
   const [isDarkTheme, setIsDarkTheme] = useState(() =>
@@ -254,6 +255,10 @@ export const TextEditorModal: React.FC<TextEditorModalProps> = ({
     }
   }, [readClipboardTextFromBridge]);
 
+  useEffect(() => {
+    readClipboardTextRef.current = readClipboardText;
+  }, [readClipboardText]);
+
   const handlePaste = useCallback(async () => {
     const editor = editorRef.current;
     if (!editor) return;
@@ -316,7 +321,30 @@ export const TextEditorModal: React.FC<TextEditorModalProps> = ({
     });
 
     // Fallback paste path for Electron environments where Monaco paste can fail.
+    // Skip custom paste when focus is inside the find/replace widget so that
+    // its input fields receive the pasted text via default browser behavior.
     editor.addCommand(monaco.KeyMod.CtrlCmd | monaco.KeyCode.KeyV, () => {
+      const active = document.activeElement;
+      if (active?.closest('.find-widget')) {
+        // Read clipboard and insert into the find/replace input field.
+        void (async () => {
+          try {
+            const text = await readClipboardTextRef.current();
+            if (!text) return;
+            // Monaco find widget inputs are <textarea> elements inside .monaco-inputbox
+            if (active instanceof HTMLTextAreaElement || active instanceof HTMLInputElement) {
+              const start = active.selectionStart ?? active.value.length;
+              const end = active.selectionEnd ?? active.value.length;
+              active.focus();
+              active.setSelectionRange(start, end);
+              document.execCommand('insertText', false, text);
+            }
+          } catch {
+            // Ignore – paste simply won't work
+          }
+        })();
+        return;
+      }
       void handlePasteRef.current();
     });
   }, []);

components/TopTabs.tsx

@@ -1,10 +1,12 @@
-import { Bell, Copy, FileText, Folder, LayoutGrid, Minus, Moon, MoreHorizontal, Plus, Server, Shield, Square, Sun, TerminalSquare, Usb, X } from 'lucide-react';
+import { Bell, Copy, FileText, Folder, FolderLock, LayoutGrid, Minus, Moon, MoreHorizontal, Plus, Server, Sparkles, Square, Sun, TerminalSquare, Usb, X } from 'lucide-react';
 import React, { memo, useCallback, useEffect, useLayoutEffect, useMemo, useRef, useState } from 'react';
 import { activeTabStore, useActiveTabId } from '../application/state/activeTabStore';
+import { buildWorkspaceActivityMap } from '../application/state/sessionActivity';
+import { useSessionActivityMap } from '../application/state/sessionActivityStore';
 import { LogView } from '../application/state/useSessionState';
 import { useWindowControls } from '../application/state/useWindowControls';
 import { useI18n } from '../application/i18n/I18nProvider';
-import { normalizeDistroId } from '../domain/host';
+import { getEffectiveHostDistro } from '../domain/host';
 import { cn } from '../lib/utils';
 import { Host, TerminalSession, Workspace } from '../types';
 import { DISTRO_LOGOS, DISTRO_COLORS } from './DistroAvatar';
@@ -36,6 +38,7 @@ interface TopTabsProps {
   onToggleTheme: () => void;
   onOpenSettings: () => void;
   onSyncNow?: () => Promise<void>;
+  isImmersiveActive?: boolean;
   onStartSessionDrag: (sessionId: string) => void;
   onEndSessionDrag: () => void;
   onReorderTabs: (draggedId: string, targetId: string, position: 'before' | 'after') => void;
@@ -54,7 +57,7 @@ const localOsId = (() => {
 const SessionTabIcon: React.FC<{ host: Host | undefined; isActive: boolean; protocol?: string }> = memo(({ host, isActive, protocol }) => {
   const boxBase = "shrink-0 h-4 w-4 rounded flex items-center justify-center";
   const iconSize = "h-2.5 w-2.5";
-  const fallbackIcon = cn(iconSize, isActive ? "text-accent" : "text-muted-foreground");
+  const fallbackStyle = { color: isActive ? 'var(--top-tabs-accent, hsl(var(--accent)))' : 'var(--top-tabs-muted, hsl(var(--muted-foreground)))' };
 
   // Serial protocol → USB icon
   if (protocol === 'serial' || host?.protocol === 'serial') {
@@ -81,7 +84,7 @@ const SessionTabIcon: React.FC<{ host: Host | undefined; isActive: boolean; prot
       );
     }
     return (
-      <div className={cn(boxBase, "bg-primary/15 text-primary")}>
+      <div className={boxBase} style={{ backgroundColor: 'color-mix(in srgb, var(--top-tabs-accent, hsl(var(--accent))) 15%, transparent)', color: 'var(--top-tabs-accent, hsl(var(--accent)))' }}>
         <TerminalSquare className={iconSize} />
       </div>
     );
@@ -89,7 +92,7 @@ const SessionTabIcon: React.FC<{ host: Host | undefined; isActive: boolean; prot
 
   // Try distro logo with brand background color
   if (host) {
-    const distro = normalizeDistroId(host.distro) || (host.distro || '').toLowerCase();
+    const distro = getEffectiveHostDistro(host);
     const logo = DISTRO_LOGOS[distro];
     if (logo) {
       const bg = DISTRO_COLORS[distro] || DISTRO_COLORS.default;
@@ -97,7 +100,7 @@ const SessionTabIcon: React.FC<{ host: Host | undefined; isActive: boolean; prot
         <div className={cn(boxBase, bg)}>
           <img
             src={logo}
-            alt={host.distro || host.os}
+            alt={distro || host.os}
             className={cn(iconSize, "object-contain invert brightness-0")}
           />
         </div>
@@ -108,22 +111,33 @@ const SessionTabIcon: React.FC<{ host: Host | undefined; isActive: boolean; prot
   // Fallback: generic server icon for remote, terminal for unknown
   if (host && host.protocol !== 'local') {
     return (
-      <div className={cn(boxBase, "bg-primary/15 text-primary")}>
+      <div className={boxBase} style={{ backgroundColor: 'color-mix(in srgb, var(--top-tabs-accent, hsl(var(--accent))) 15%, transparent)', color: 'var(--top-tabs-accent, hsl(var(--accent)))' }}>
         <Server className={iconSize} />
       </div>
     );
   }
-  return <TerminalSquare className={fallbackIcon} />;
+  return <TerminalSquare className={iconSize} style={fallbackStyle} />;
 });
 SessionTabIcon.displayName = 'SessionTabIcon';
 
-const sessionStatusDot = (status: TerminalSession['status']) => {
+const sessionStatusDot = (status: TerminalSession['status'], hasActivity: boolean) => {
   const tone = status === 'connected'
     ? "bg-emerald-400"
     : status === 'connecting'
       ? "bg-amber-400"
       : "bg-rose-500";
-  return <span className={cn("inline-block h-2 w-2 rounded-full ring-2 ring-background/60", tone)} />;
+  return (
+    <span className="relative inline-flex h-2 w-2 shrink-0 items-center justify-center">
+      <span
+        className={cn(
+          "relative inline-block h-2 w-2 rounded-full ring-2",
+          tone,
+          hasActivity && "session-activity-dot",
+        )}
+        style={{ boxShadow: '0 0 0 2px color-mix(in srgb, var(--top-tabs-active-bg, hsl(var(--background))) 60%, transparent)' }}
+      />
+    </span>
+  );
 };
 
 // Custom window controls for Windows/Linux (frameless window)
@@ -167,14 +181,16 @@ const WindowControls: React.FC = memo(() => {
     <div className="flex items-center app-drag h-full">
       <button
         onClick={handleMinimize}
-        className="h-full w-10 flex items-center justify-center text-muted-foreground hover:bg-foreground/10 hover:text-foreground transition-all duration-150 app-no-drag"
+        className="h-full w-10 flex items-center justify-center transition-all duration-150 app-no-drag"
+        style={{ color: 'var(--top-tabs-muted, hsl(var(--muted-foreground)))' }}
         title="Minimize"
       >
         <Minus size={16} />
       </button>
       <button
         onClick={handleMaximize}
-        className="h-full w-10 flex items-center justify-center text-muted-foreground hover:bg-foreground/10 hover:text-foreground transition-all duration-150 app-no-drag"
+        className="h-full w-10 flex items-center justify-center transition-all duration-150 app-no-drag"
+        style={{ color: 'var(--top-tabs-muted, hsl(var(--muted-foreground)))' }}
         title={isMaximized ? "Restore" : "Maximize"}
       >
         {isMaximized ? (
@@ -217,6 +233,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
   onToggleTheme,
   onOpenSettings,
   onSyncNow,
+  isImmersiveActive,
   onStartSessionDrag,
   onEndSessionDrag,
   onReorderTabs,
@@ -225,6 +242,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
   // Subscribe to activeTabId from external store
   const { maximize, isFullscreen, onFullscreenChanged } = useWindowControls();
   const activeTabId = useActiveTabId();
+  const sessionActivityMap = useSessionActivityMap();
   const isVaultActive = activeTabId === 'vault';
   const isSftpActive = activeTabId === 'sftp';
   const onSelectTab = activeTabStore.setActiveTabId;
@@ -328,6 +346,10 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
     return map;
   }, [hosts]);
 
+  const workspaceActivityMap = useMemo(() => {
+    return buildWorkspaceActivityMap(sessions, sessionActivityMap);
+  }, [sessionActivityMap, sessions]);
+
   // Pre-compute session counts per workspace for O(1) access
   const workspacePaneCounts = useMemo(() => {
     const counts = new Map<string, number>();
@@ -451,6 +473,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
 
       if (item.type === 'session') {
         const session = item.session;
+        const hasActivity = !!sessionActivityMap[session.id];
         const isBeingDragged = draggingSessionId === session.id;
         const shiftStyle = tabShiftStyles[session.id] || {};
         const showDropIndicatorBefore = dropIndicator?.tabId === session.id && dropIndicator.position === 'before';
@@ -470,30 +493,56 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
                 onDrop={(e) => handleTabDrop(e, session.id)}
                 className={cn(
                   "relative h-7 pl-3 pr-2 min-w-[140px] max-w-[240px] rounded-none text-xs font-semibold cursor-pointer flex items-center justify-between gap-2 app-no-drag flex-shrink-0",
-                  "transition-all duration-150",
-                  activeTabId === session.id
-                    ? "bg-background text-foreground"
-                    : "text-muted-foreground hover:bg-background/40 hover:text-foreground",
+                  "transition-transform duration-150",
                   isBeingDragged && isDraggingForReorder ? "opacity-40 scale-95" : ""
                 )}
-                style={shiftStyle}
+                style={{
+                  ...shiftStyle,
+                  backgroundColor: activeTabId === session.id
+                    ? 'var(--top-tabs-active-bg, hsl(var(--background)))'
+                    : 'transparent',
+                  color: activeTabId === session.id
+                    ? 'var(--top-tabs-fg, hsl(var(--foreground)))'
+                    : 'var(--top-tabs-muted, hsl(var(--muted-foreground)))',
+                }}
+                onMouseEnter={(e) => {
+                  if (activeTabId !== session.id) {
+                    e.currentTarget.style.backgroundColor = 'color-mix(in srgb, var(--top-tabs-active-bg, hsl(var(--background))) 40%, transparent)';
+                    e.currentTarget.style.color = 'var(--top-tabs-fg, hsl(var(--foreground)))';
+                  }
+                }}
+                onMouseLeave={(e) => {
+                  if (activeTabId !== session.id) {
+                    e.currentTarget.style.backgroundColor = 'transparent';
+                    e.currentTarget.style.color = 'var(--top-tabs-muted, hsl(var(--muted-foreground)))';
+                  }
+                }}
               >
                 {/* Active tab top accent line */}
                 {activeTabId === session.id && (
-                  <div className="absolute top-0 left-0 right-0 h-[2px] bg-accent" />
+                  <div
+                    className="absolute top-0 left-0 right-0 h-[2px]"
+                    style={{ backgroundColor: 'var(--top-tabs-fg, hsl(var(--foreground)))' }}
+                  />
                 )}
                 {/* Drop indicator line - before */}
                 {showDropIndicatorBefore && isDraggingForReorder && (
-                  <div className="absolute -left-0.5 top-1 bottom-1 w-0.5 bg-primary rounded-full shadow-[0_0_8px_2px] shadow-primary/50 animate-pulse" />
+                  <div
+                    className="absolute -left-0.5 top-1 bottom-1 w-0.5 rounded-full animate-pulse"
+                    style={{ backgroundColor: 'var(--top-tabs-accent, hsl(var(--accent)))', boxShadow: '0 0 8px 2px color-mix(in srgb, var(--top-tabs-accent, hsl(var(--accent))) 50%, transparent)' }}
+                  />
                 )}
                 {/* Drop indicator line - after */}
                 {showDropIndicatorAfter && isDraggingForReorder && (
-                  <div className="absolute -right-0.5 top-1 bottom-1 w-0.5 bg-primary rounded-full shadow-[0_0_8px_2px] shadow-primary/50 animate-pulse" />
+                  <div
+                    className="absolute -right-0.5 top-1 bottom-1 w-0.5 rounded-full animate-pulse"
+                    style={{ backgroundColor: 'var(--top-tabs-accent, hsl(var(--accent)))', boxShadow: '0 0 8px 2px color-mix(in srgb, var(--top-tabs-accent, hsl(var(--accent))) 50%, transparent)' }}
+                  />
                 )}
                 <div className="flex items-center gap-2 min-w-0 flex-1">
                   <SessionTabIcon host={hostMap.get(session.hostId)} isActive={activeTabId === session.id} protocol={session.protocol} />
                   <span className="truncate">{session.hostLabel}</span>
-                  <div className="flex-shrink-0">{sessionStatusDot(session.status)}</div>
+                  <div className="flex-shrink-0">{sessionStatusDot(session.status, hasActivity)}</div>
                 </div>
                 <button
                   onClick={(e) => onCloseSession(session.id, e)}
@@ -522,6 +571,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
       if (item.type === 'workspace') {
         const workspace = item.workspace;
         const paneCount = item.paneCount;
+        const hasActivity = !!workspaceActivityMap.get(workspace.id);
         const isActive = activeTabId === workspace.id;
         const isBeingDragged = draggingSessionId === workspace.id;
         const shiftStyle = tabShiftStyles[workspace.id] || {};
@@ -542,32 +592,71 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
                 onDrop={(e) => handleTabDrop(e, workspace.id)}
                 className={cn(
                   "relative h-7 pl-3 pr-2 min-w-[150px] max-w-[260px] rounded-none text-xs font-semibold cursor-pointer flex items-center justify-between gap-2 app-no-drag flex-shrink-0",
-                  "transition-all duration-150",
-                  isActive
-                    ? "bg-background text-foreground"
-                    : "text-muted-foreground hover:bg-background/40 hover:text-foreground",
+                  "transition-transform duration-150",
                   isBeingDragged && isDraggingForReorder ? "opacity-40 scale-95" : ""
                 )}
-                style={shiftStyle}
+                style={{
+                  ...shiftStyle,
+                  backgroundColor: isActive
+                    ? 'var(--top-tabs-active-bg, hsl(var(--background)))'
+                    : 'transparent',
+                  color: isActive
+                    ? 'var(--top-tabs-fg, hsl(var(--foreground)))'
+                    : 'var(--top-tabs-muted, hsl(var(--muted-foreground)))',
+                }}
+                onMouseEnter={(e) => {
+                  if (!isActive) {
+                    e.currentTarget.style.backgroundColor = 'color-mix(in srgb, var(--top-tabs-active-bg, hsl(var(--background))) 40%, transparent)';
+                    e.currentTarget.style.color = 'var(--top-tabs-fg, hsl(var(--foreground)))';
+                  }
+                }}
+                onMouseLeave={(e) => {
+                  if (!isActive) {
+                    e.currentTarget.style.backgroundColor = 'transparent';
+                    e.currentTarget.style.color = 'var(--top-tabs-muted, hsl(var(--muted-foreground)))';
+                  }
+                }}
               >
                 {/* Active tab top accent line */}
                 {isActive && (
-                  <div className="absolute top-0 left-0 right-0 h-[2px] bg-accent" />
+                  <div
+                    className="absolute top-0 left-0 right-0 h-[2px]"
+                    style={{ backgroundColor: 'var(--top-tabs-fg, hsl(var(--foreground)))' }}
+                  />
                 )}
                 {/* Drop indicator line - before */}
                 {showDropIndicatorBefore && isDraggingForReorder && (
-                  <div className="absolute -left-0.5 top-1 bottom-1 w-0.5 bg-primary rounded-full shadow-[0_0_8px_2px] shadow-primary/50 animate-pulse" />
+                  <div
+                    className="absolute -left-0.5 top-1 bottom-1 w-0.5 rounded-full animate-pulse"
+                    style={{ backgroundColor: 'var(--top-tabs-accent, hsl(var(--accent)))', boxShadow: '0 0 8px 2px color-mix(in srgb, var(--top-tabs-accent, hsl(var(--accent))) 50%, transparent)' }}
+                  />
                 )}
                 {/* Drop indicator line - after */}
                 {showDropIndicatorAfter && isDraggingForReorder && (
-                  <div className="absolute -right-0.5 top-1 bottom-1 w-0.5 bg-primary rounded-full shadow-[0_0_8px_2px] shadow-primary/50 animate-pulse" />
+                  <div
+                    className="absolute -right-0.5 top-1 bottom-1 w-0.5 rounded-full animate-pulse"
+                    style={{ backgroundColor: 'var(--top-tabs-accent, hsl(var(--accent)))', boxShadow: '0 0 8px 2px color-mix(in srgb, var(--top-tabs-accent, hsl(var(--accent))) 50%, transparent)' }}
+                  />
                 )}
                 <div className="flex items-center gap-2 truncate">
-                  <LayoutGrid size={14} className={cn("shrink-0", isActive ? "text-primary" : "text-muted-foreground")} />
+                  <LayoutGrid
+                    size={14}
+                    className="shrink-0"
+                    style={{ color: isActive ? 'var(--top-tabs-accent, hsl(var(--accent)))' : 'var(--top-tabs-muted, hsl(var(--muted-foreground)))' }}
+                  />
                   <span className="truncate">{workspace.title}</span>
                 </div>
-                <div className="text-[10px] px-1.5 py-0.5 rounded-full border border-border/70 bg-background/60 min-w-[22px] text-center">
-                  {paneCount}
+                <div className="flex items-center gap-1.5 shrink-0">
+                  {hasActivity && sessionStatusDot('connected', true)}
+                  <div
+                    className="text-[10px] px-1.5 py-0.5 rounded-full min-w-[22px] text-center"
+                    style={{
+                      border: '1px solid color-mix(in srgb, var(--top-tabs-fg, hsl(var(--foreground))) 18%, transparent)',
+                      backgroundColor: 'color-mix(in srgb, var(--top-tabs-active-bg, hsl(var(--background))) 60%, transparent)',
+                    }}
+                  >
+                    {paneCount}
+                  </div>
                 </div>
               </div>
             </ContextMenuTrigger>
@@ -595,18 +684,41 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
             onClick={() => onSelectTab(logView.id)}
             className={cn(
               "relative h-7 pl-3 pr-2 min-w-[140px] max-w-[240px] rounded-none text-xs font-semibold cursor-pointer flex items-center justify-between gap-2 app-no-drag flex-shrink-0",
-              "transition-colors duration-150",
-              isActive
-                ? "bg-background text-foreground"
-                : "text-muted-foreground hover:bg-background/40 hover:text-foreground"
             )}
+            style={{
+              backgroundColor: isActive
+                ? 'var(--top-tabs-active-bg, hsl(var(--background)))'
+                : 'transparent',
+              color: isActive
+                ? 'var(--top-tabs-fg, hsl(var(--foreground)))'
+                : 'var(--top-tabs-muted, hsl(var(--muted-foreground)))',
+            }}
+            onMouseEnter={(e) => {
+              if (!isActive) {
+                e.currentTarget.style.backgroundColor = 'color-mix(in srgb, var(--top-tabs-active-bg, hsl(var(--background))) 40%, transparent)';
+                e.currentTarget.style.color = 'var(--top-tabs-fg, hsl(var(--foreground)))';
+              }
+            }}
+            onMouseLeave={(e) => {
+              if (!isActive) {
+                e.currentTarget.style.backgroundColor = 'transparent';
+                e.currentTarget.style.color = 'var(--top-tabs-muted, hsl(var(--muted-foreground)))';
+              }
+            }}
           >
             {/* Active tab top accent line */}
             {isActive && (
-              <div className="absolute top-0 left-0 right-0 h-[2px] bg-accent" />
+              <div
+                className="absolute top-0 left-0 right-0 h-[2px]"
+                style={{ backgroundColor: 'var(--top-tabs-fg, hsl(var(--foreground)))' }}
+              />
             )}
             <div className="flex items-center gap-2 min-w-0 flex-1">
-              <FileText size={14} className={cn("shrink-0", isActive ? "text-accent" : "text-muted-foreground")} />
+              <FileText
+                size={14}
+                className="shrink-0"
+                style={{ color: isActive ? 'var(--top-tabs-accent, hsl(var(--accent)))' : 'var(--top-tabs-muted, hsl(var(--muted-foreground)))' }}
+              />
               <span className="truncate">
                 {t('tabs.logPrefix')} {isLocal ? t('tabs.logLocal') : logView.log.hostname}
               </span>
@@ -640,8 +752,13 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
 
   return (
     <div
+      data-top-tabs-root
       className="relative w-full bg-secondary app-drag"
-      style={dragRegionNoSelect}
+      style={{
+        ...dragRegionNoSelect,
+        backgroundColor: 'var(--top-tabs-bg, hsl(var(--secondary)))',
+        color: 'var(--top-tabs-fg, hsl(var(--foreground)))',
+      }}
       onDoubleClick={handleTitleBarDoubleClick}
     >
       {/* Always-on drag stripe so the window can be moved even when tabs fill the bar */}
@@ -656,25 +773,62 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
             onClick={() => onSelectTab('vault')}
             className={cn(
               "relative h-7 px-3 rounded text-xs font-semibold cursor-pointer flex items-center gap-2 app-no-drag",
-              "transition-colors duration-150",
-              isVaultActive
-                ? "bg-foreground/10 text-foreground"
-                : "text-muted-foreground hover:bg-background/40 hover:text-foreground"
             )}
+            style={{
+              backgroundColor: isVaultActive
+                ? 'var(--top-tabs-active-bg, hsl(var(--background)))'
+                : 'transparent',
+              color: isVaultActive
+                ? 'var(--top-tabs-fg, hsl(var(--foreground)))'
+                : 'var(--top-tabs-muted, hsl(var(--muted-foreground)))',
+            }}
+            onMouseEnter={(e) => {
+              if (!isVaultActive) {
+                e.currentTarget.style.backgroundColor = 'color-mix(in srgb, var(--top-tabs-active-bg, hsl(var(--background))) 40%, transparent)';
+                e.currentTarget.style.color = 'var(--top-tabs-fg, hsl(var(--foreground)))';
+              }
+            }}
+            onMouseLeave={(e) => {
+              if (!isVaultActive) {
+                e.currentTarget.style.backgroundColor = 'transparent';
+                e.currentTarget.style.color = 'var(--top-tabs-muted, hsl(var(--muted-foreground)))';
+              }
+            }}
           >
-            <Shield size={14} /> Vaults
+            <FolderLock size={14} /> Vaults
           </div>
           <div
             onClick={() => onSelectTab('sftp')}
             className={cn(
               "relative h-7 px-3 rounded-none text-xs font-semibold cursor-pointer flex items-center gap-2 app-no-drag",
-              "transition-colors duration-150",
-              isSftpActive
-                ? "bg-background text-foreground"
-                : "text-muted-foreground hover:bg-background/40 hover:text-foreground"
             )}
+            style={{
+              backgroundColor: isSftpActive
+                ? 'var(--top-tabs-active-bg, hsl(var(--background)))'
+                : 'transparent',
+              color: isSftpActive
+                ? 'var(--top-tabs-fg, hsl(var(--foreground)))'
+                : 'var(--top-tabs-muted, hsl(var(--muted-foreground)))',
+            }}
+            onMouseEnter={(e) => {
+              if (!isSftpActive) {
+                e.currentTarget.style.backgroundColor = 'color-mix(in srgb, var(--top-tabs-active-bg, hsl(var(--background))) 40%, transparent)';
+                e.currentTarget.style.color = 'var(--top-tabs-fg, hsl(var(--foreground)))';
+              }
+            }}
+            onMouseLeave={(e) => {
+              if (!isSftpActive) {
+                e.currentTarget.style.backgroundColor = 'transparent';
+                e.currentTarget.style.color = 'var(--top-tabs-muted, hsl(var(--muted-foreground)))';
+              }
+            }}
           >
-            {isSftpActive && <div className="absolute top-0 left-0 right-0 h-[2px] bg-accent" />}
+            {isSftpActive && (
+              <div
+                className="absolute top-0 left-0 right-0 h-[2px]"
+                style={{ backgroundColor: 'var(--top-tabs-fg, hsl(var(--foreground)))' }}
+              />
+            )}
             <Folder size={14} /> SFTP
           </div>
         </div>
@@ -696,7 +850,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
           {canScrollLeft && (
             <div
               className="absolute left-0 top-0 bottom-0 w-8 pointer-events-none z-10"
-              style={{ background: 'linear-gradient(to right, hsl(var(--secondary) / 0.9), transparent)' }}
+              style={{ background: 'linear-gradient(to right, var(--top-tabs-bg, hsl(var(--secondary))), transparent)' }}
             />
           )}
 
@@ -713,6 +867,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
                 variant="ghost"
                 size="icon"
                 className="h-7 w-7 flex-shrink-0 app-no-drag mb-0 rounded-none"
+                style={{ color: 'var(--top-tabs-muted, hsl(var(--muted-foreground)))' }}
                 onClick={onOpenQuickSwitcher}
                 title="Open quick switcher"
               >
@@ -727,7 +882,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
           {canScrollRight && (
             <div
               className="absolute right-0 top-0 bottom-0 w-8 pointer-events-none z-10"
-              style={{ background: 'linear-gradient(to left, hsl(var(--secondary) / 0.9), transparent)' }}
+              style={{ background: 'linear-gradient(to left, var(--top-tabs-bg, hsl(var(--secondary))), transparent)' }}
             />
           )}
         </div>
@@ -738,6 +893,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
             variant="ghost"
             size="icon"
             className="h-7 w-7 flex-shrink-0 app-no-drag self-end rounded-none"
+            style={{ color: 'var(--top-tabs-muted, hsl(var(--muted-foreground)))' }}
             onClick={onOpenQuickSwitcher}
             title="More tabs"
           >
@@ -747,15 +903,27 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
 
         {/* Fixed right controls */}
         <div className="flex-shrink-0 flex items-center gap-2 app-drag self-center" style={dragRegionStyle}>
-          <Button variant="ghost" size="icon" className="h-6 w-6 text-muted-foreground hover:text-foreground app-no-drag">
+          <Button
+            variant="ghost"
+            size="icon"
+            className="h-6 w-6 app-no-drag"
+            style={{ color: 'var(--top-tabs-muted, hsl(var(--muted-foreground)))' }}
+            title="AI Assistant"
+            onClick={() => window.dispatchEvent(new CustomEvent('netcatty:toggle-ai-panel'))}
+          >
+            <Sparkles size={16} />
+          </Button>
+          <Button variant="ghost" size="icon" className="h-6 w-6 app-no-drag" style={{ color: 'var(--top-tabs-muted, hsl(var(--muted-foreground)))' }}>
             <Bell size={16} />
           </Button>
           <SyncStatusButton onOpenSettings={onOpenSettings} onSyncNow={onSyncNow} />
           <Button
             variant="ghost"
             size="icon"
-            className="h-6 w-6 text-muted-foreground hover:text-foreground app-no-drag"
+            className="h-6 w-6 app-no-drag"
+            style={{ color: 'var(--top-tabs-muted, hsl(var(--muted-foreground)))' }}
             onClick={onToggleTheme}
+            disabled={isImmersiveActive}
             title="Toggle theme"
           >
             {theme === 'dark' ? <Sun size={16} /> : <Moon size={16} />}
@@ -779,10 +947,12 @@ const topTabsAreEqual = (prev: TopTabsProps, next: TopTabsProps): boolean => {
     prev.orphanSessions === next.orphanSessions &&
     prev.workspaces === next.workspaces &&
     prev.orderedTabs === next.orderedTabs &&
+    prev.logViews === next.logViews &&
     prev.draggingSessionId === next.draggingSessionId &&
     prev.isMacClient === next.isMacClient &&
     prev.onOpenSettings === next.onOpenSettings &&
-    prev.onSyncNow === next.onSyncNow
+    prev.onSyncNow === next.onSyncNow &&
+    prev.isImmersiveActive === next.isImmersiveActive
   );
 };
 

components/TrayPanel.tsx

@@ -116,7 +116,7 @@ const TrayPanelContent: React.FC = () => {
     onTrayPanelMenuData,
   } = useTrayPanelBackend();
 
-  const { hosts, keys } = useVaultState();
+  const { hosts, keys, identities } = useVaultState();
   useSessionState();
   const { rules: portForwardingRules, startTunnel, stopTunnel } = usePortForwardingState();
   const activeTabId = useActiveTabId();
@@ -151,11 +151,6 @@ const TrayPanelContent: React.FC = () => {
     return () => unsubscribe?.();
   }, [onTrayPanelRefresh]);
 
-  const keysForPf = useMemo(
-    () => keys.map((k) => ({ id: k.id, privateKey: k.privateKey, passphrase: k.passphrase })),
-    [keys],
-  );
-
   const handleClose = useCallback(() => {
     void hideTrayPanel();
   }, [hideTrayPanel]);
@@ -339,7 +334,7 @@ const TrayPanelContent: React.FC = () => {
                       if (isActive) {
                         void stopTunnel(rule.id);
                       } else {
-                        void startTunnel(rule, host, keysForPf, (status, error) => {
+                        void startTunnel(rule, host, hosts, keys, identities, (status, error) => {
                           if (status === "error" && error) toast.error(error);
                         }, rule.autoStart);
                       }

components/ai-elements/conversation.tsx

@@ -0,0 +1,54 @@
+import { cn } from '../../lib/utils';
+import type { ComponentProps } from 'react';
+import React, { useCallback } from 'react';
+import { StickToBottom, useStickToBottomContext } from 'use-stick-to-bottom';
+import { ArrowDown } from 'lucide-react';
+
+export type ConversationProps = ComponentProps<typeof StickToBottom>;
+
+export const Conversation = ({ className, ...props }: ConversationProps) => (
+  <StickToBottom
+    className={cn('relative flex-1 overflow-y-hidden', className)}
+    initial="instant"
+    resize="smooth"
+    role="log"
+    {...props}
+  />
+);
+
+export type ConversationContentProps = ComponentProps<typeof StickToBottom.Content>;
+
+export const ConversationContent = ({ className, ...props }: ConversationContentProps) => (
+  <StickToBottom.Content
+    className={cn('flex flex-col gap-4 p-4', className)}
+    {...props}
+  />
+);
+
+export const ConversationScrollButton = ({ className, ...props }: React.ButtonHTMLAttributes<HTMLButtonElement>) => {
+  const { isAtBottom, scrollToBottom } = useStickToBottomContext();
+
+  const handleClick = useCallback(() => {
+    scrollToBottom();
+  }, [scrollToBottom]);
+
+  if (isAtBottom) return null;
+
+  return (
+    <button
+      type="button"
+      className={cn(
+        'absolute bottom-3 left-1/2 -translate-x-1/2 z-10',
+        'h-7 w-7 rounded-full border border-border/40 bg-background/90 backdrop-blur-sm',
+        'flex items-center justify-center',
+        'text-muted-foreground hover:text-foreground hover:bg-muted transition-colors cursor-pointer',
+        'shadow-sm',
+        className,
+      )}
+      onClick={handleClick}
+      {...props}
+    >
+      <ArrowDown size={14} />
+    </button>
+  );
+};

components/ai-elements/message.tsx

@@ -0,0 +1,87 @@
+import { cn } from '../../lib/utils';
+import { cjk } from '@streamdown/cjk';
+import { code } from '@streamdown/code';
+import type { ComponentProps, HTMLAttributes } from 'react';
+import { memo } from 'react';
+import { Streamdown } from 'streamdown';
+
+export type MessageProps = HTMLAttributes<HTMLDivElement> & {
+  from: 'user' | 'assistant' | 'system' | 'tool';
+};
+
+export const Message = ({ className, from, ...props }: MessageProps) => (
+  <div
+    className={cn(
+      'group flex w-full max-w-[95%] flex-col gap-1.5',
+      from === 'user' ? 'is-user ml-auto' : 'is-assistant',
+      className,
+    )}
+    {...props}
+  />
+);
+
+export type MessageContentProps = HTMLAttributes<HTMLDivElement>;
+
+export const MessageContent = ({ children, className, ...props }: MessageContentProps) => (
+  <div
+    className={cn(
+      'flex w-fit min-w-0 max-w-full flex-col gap-1.5 text-[13px] leading-relaxed',
+      'group-[.is-user]:ml-auto group-[.is-user]:overflow-hidden group-[.is-user]:rounded-lg group-[.is-user]:border group-[.is-user]:border-border/50 group-[.is-user]:bg-muted/50 group-[.is-user]:px-2.5 group-[.is-user]:py-2',
+      'group-[.is-assistant]:w-full group-[.is-assistant]:text-foreground/90',
+      className,
+    )}
+    {...props}
+  >
+    {children}
+  </div>
+);
+
+export type MessageActionsProps = ComponentProps<'div'>;
+
+export const MessageActions = ({ className, children, ...props }: MessageActionsProps) => (
+  <div
+    className={cn(
+      'flex items-center gap-1 opacity-0 group-hover:opacity-100 transition-opacity',
+      className,
+    )}
+    {...props}
+  >
+    {children}
+  </div>
+);
+
+const streamdownPlugins = { cjk, code };
+
+export type MessageResponseProps = ComponentProps<typeof Streamdown>;
+
+export const MessageResponse = memo(
+  ({ className, ...props }: MessageResponseProps) => (
+    <Streamdown
+      className={cn(
+        'size-full [&>*:first-child]:mt-0 [&>*:last-child]:mb-0',
+        // Style the rendered markdown
+        // Code: base styles (code-block overrides are in index.css)
+        '[&_code]:text-[12px] [&_code]:font-mono',
+        '[&_p_code]:px-[0.4em] [&_p_code]:py-[0.15em] [&_p_code]:rounded [&_p_code]:bg-foreground/[0.06] [&_p_code]:text-[85%]',
+        '[&_p]:my-1.5',
+        '[&_ul]:my-1.5 [&_ul]:pl-4 [&_ul]:list-disc',
+        '[&_ol]:my-1.5 [&_ol]:pl-4 [&_ol]:list-decimal',
+        '[&_li]:my-0.5',
+        '[&_h1]:text-base [&_h1]:font-semibold [&_h1]:mt-4 [&_h1]:mb-2',
+        '[&_h2]:text-sm [&_h2]:font-semibold [&_h2]:mt-3 [&_h2]:mb-1.5',
+        '[&_h3]:text-sm [&_h3]:font-medium [&_h3]:mt-2 [&_h3]:mb-1',
+        '[&_blockquote]:border-l-2 [&_blockquote]:border-border/50 [&_blockquote]:pl-3 [&_blockquote]:text-muted-foreground',
+        '[&_a]:text-primary [&_a]:underline',
+        '[&_hr]:border-border/30 [&_hr]:my-3',
+        '[&_table]:text-[12px] [&_th]:px-2 [&_th]:py-1 [&_th]:border [&_th]:border-border/30 [&_th]:bg-muted/20 [&_td]:px-2 [&_td]:py-1 [&_td]:border [&_td]:border-border/30',
+        className,
+      )}
+      plugins={streamdownPlugins}
+      {...props}
+    />
+  ),
+  (prevProps, nextProps) =>
+    prevProps.children === nextProps.children &&
+    nextProps.isAnimating === prevProps.isAnimating,
+);
+MessageResponse.displayName = 'MessageResponse';

components/ai-elements/prompt-input.tsx

@@ -0,0 +1,247 @@
+/**
+ * PromptInput - Adapted from Vercel AI Elements prompt-input for netcatty.
+ *
+ * Simplified: no file attachments, screenshots, drag-drop, command palette,
+ * hover cards, referenced sources, or tabs. Core input + footer + submit.
+ */
+
+import { ArrowUp, Square, X } from 'lucide-react';
+import type {
+  ComponentProps,
+  FormEvent,
+  HTMLAttributes,
+  KeyboardEvent,
+  ReactNode,
+} from 'react';
+import { forwardRef, useCallback, useRef } from 'react';
+import { cn } from '../../lib/utils';
+import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from '../ui/tooltip';
+import {
+  InputGroup,
+  InputGroupAddon,
+  InputGroupButton,
+  InputGroupTextarea,
+} from '../ui/input-group';
+import { Spinner } from '../ui/spinner';
+
+// ---------------------------------------------------------------------------
+// PromptInput (form wrapper)
+// ---------------------------------------------------------------------------
+
+export interface PromptInputProps extends HTMLAttributes<HTMLFormElement> {
+  onSubmit: (text: string, event: FormEvent<HTMLFormElement>) => void | Promise<void>;
+}
+
+export const PromptInput = forwardRef<HTMLFormElement, PromptInputProps>(
+  ({ className, onSubmit, children, ...props }, ref) => {
+    const handleSubmit = useCallback(
+      (e: FormEvent<HTMLFormElement>) => {
+        e.preventDefault();
+        const form = e.currentTarget;
+        const textarea = form.querySelector('textarea');
+        const text = textarea?.value?.trim() ?? '';
+        if (!text) return;
+        onSubmit(text, e);
+      },
+      [onSubmit],
+    );
+
+    return (
+      <form ref={ref} onSubmit={handleSubmit} className={className} {...props}>
+        <InputGroup>{children}</InputGroup>
+      </form>
+    );
+  },
+);
+PromptInput.displayName = 'PromptInput';
+
+// ---------------------------------------------------------------------------
+// PromptInputTextarea
+// ---------------------------------------------------------------------------
+
+export interface PromptInputTextareaProps extends ComponentProps<'textarea'> {
+  /** Called when Enter is pressed (without Shift) to trigger form submit */
+  onSubmitRequest?: () => void;
+}
+
+export const PromptInputTextarea = forwardRef<HTMLTextAreaElement, PromptInputTextareaProps>(
+  ({ className, onSubmitRequest, onKeyDown, ...props }, ref) => {
+    const internalRef = useRef<HTMLTextAreaElement | null>(null);
+
+    const setRef = useCallback(
+      (node: HTMLTextAreaElement | null) => {
+        internalRef.current = node;
+        if (typeof ref === 'function') ref(node);
+        else if (ref) ref.current = node;
+      },
+      [ref],
+    );
+
+    const handleKeyDown = useCallback(
+      (e: KeyboardEvent<HTMLTextAreaElement>) => {
+        onKeyDown?.(e);
+        if (e.defaultPrevented) return;
+
+        // CJK composition guard
+        if (e.nativeEvent.isComposing) return;
+
+        if (e.key === 'Enter' && !e.shiftKey) {
+          e.preventDefault();
+          onSubmitRequest?.();
+          // Trigger form submit
+          const form = internalRef.current?.closest('form');
+          if (form) {
+            form.requestSubmit();
+          }
+        }
+      },
+      [onKeyDown, onSubmitRequest],
+    );
+
+    return (
+      <InputGroupTextarea
+        ref={setRef}
+        className={className}
+        onKeyDown={handleKeyDown}
+        {...props}
+      />
+    );
+  },
+);
+PromptInputTextarea.displayName = 'PromptInputTextarea';
+
+// ---------------------------------------------------------------------------
+// PromptInputFooter
+// ---------------------------------------------------------------------------
+
+export type PromptInputFooterProps = HTMLAttributes<HTMLDivElement>;
+
+export const PromptInputFooter = forwardRef<HTMLDivElement, PromptInputFooterProps>(
+  ({ className, ...props }, ref) => (
+    <InputGroupAddon
+      ref={ref}
+      align="block-end"
+      className={cn('gap-1', className)}
+      {...props}
+    />
+  ),
+);
+PromptInputFooter.displayName = 'PromptInputFooter';
+
+// ---------------------------------------------------------------------------
+// PromptInputTools (left side of footer)
+// ---------------------------------------------------------------------------
+
+export type PromptInputToolsProps = HTMLAttributes<HTMLDivElement>;
+
+export const PromptInputTools = forwardRef<HTMLDivElement, PromptInputToolsProps>(
+  ({ className, ...props }, ref) => (
+    <div
+      ref={ref}
+      className={cn('flex items-center gap-0.5', className)}
+      {...props}
+    />
+  ),
+);
+PromptInputTools.displayName = 'PromptInputTools';
+
+// ---------------------------------------------------------------------------
+// PromptInputButton (toolbar button with optional tooltip)
+// ---------------------------------------------------------------------------
+
+export interface PromptInputButtonProps extends ComponentProps<typeof InputGroupButton> {
+  tooltip?: ReactNode;
+  tooltipSide?: 'top' | 'bottom' | 'left' | 'right';
+}
+
+export const PromptInputButton = forwardRef<HTMLButtonElement, PromptInputButtonProps>(
+  ({ tooltip, tooltipSide = 'top', ...props }, ref) => {
+    const button = <InputGroupButton ref={ref} {...props} />;
+
+    if (!tooltip) return button;
+
+    return (
+      <TooltipProvider>
+        <Tooltip>
+          <TooltipTrigger asChild>{button}</TooltipTrigger>
+          <TooltipContent side={tooltipSide}>{tooltip}</TooltipContent>
+        </Tooltip>
+      </TooltipProvider>
+    );
+  },
+);
+PromptInputButton.displayName = 'PromptInputButton';
+
+// ---------------------------------------------------------------------------
+// PromptInputSubmit
+// ---------------------------------------------------------------------------
+
+export type PromptInputStatus = 'idle' | 'submitted' | 'streaming' | 'error';
+
+export interface PromptInputSubmitProps extends ComponentProps<typeof InputGroupButton> {
+  status?: PromptInputStatus;
+  onStop?: () => void;
+}
+
+export const PromptInputSubmit = forwardRef<HTMLButtonElement, PromptInputSubmitProps>(
+  ({ status = 'idle', onStop, className, disabled, ...props }, ref) => {
+    const isRunning = status === 'submitted' || status === 'streaming';
+
+    const handleClick = useCallback(() => {
+      if (isRunning && onStop) {
+        onStop();
+      }
+    }, [isRunning, onStop]);
+
+    const icon =
+      status === 'submitted' ? (
+        <Spinner size={14} />
+      ) : status === 'streaming' ? (
+        <Square size={14} />
+      ) : status === 'error' ? (
+        <X size={14} />
+      ) : (
+        <ArrowUp size={14} />
+      );
+
+    const tooltipLabel =
+      status === 'submitted'
+        ? 'Waiting...'
+        : status === 'streaming'
+          ? 'Stop'
+          : status === 'error'
+            ? 'Error'
+            : 'Send';
+
+    return (
+      <TooltipProvider>
+        <Tooltip>
+          <TooltipTrigger asChild>
+            <InputGroupButton
+              ref={ref}
+              type={isRunning ? 'button' : 'submit'}
+              onClick={isRunning ? handleClick : undefined}
+              variant="ghost"
+              disabled={disabled && !isRunning}
+              className={cn(
+                'h-8 w-8 rounded-full border p-0 shadow-sm disabled:opacity-100',
+                isRunning
+                  ? 'border-destructive/60 bg-destructive/85 text-destructive-foreground hover:bg-destructive'
+                  : disabled
+                    ? 'border-border/80 bg-muted/52 text-foreground/72 hover:bg-muted/52'
+                    : 'border-foreground/20 bg-foreground text-background hover:bg-foreground/90',
+                className,
+              )}
+              {...props}
+            >
+              {icon}
+            </InputGroupButton>
+          </TooltipTrigger>
+          <TooltipContent side="top">{tooltipLabel}</TooltipContent>
+        </Tooltip>
+      </TooltipProvider>
+    );
+  },
+);
+PromptInputSubmit.displayName = 'PromptInputSubmit';
+

components/ai-elements/tool-call.tsx

@@ -0,0 +1,229 @@
+import { cn } from '../../lib/utils';
+import { Check, ChevronDown, ChevronRight, CheckCircle2, Loader2, ShieldAlert, X, XCircle, Slash } from 'lucide-react';
+import React, { useCallback, useEffect, useRef, useState, type HTMLAttributes } from 'react';
+import { Button } from '../ui/button';
+import { Badge } from '../ui/badge';
+import { useI18n } from '../../application/i18n/I18nProvider';
+
+/**
+ * Format tool result for display. Extracts stdout/stderr from structured
+ * command results for terminal-like output.
+ */
+function formatToolResult(result: unknown): string {
+  let parsed = result;
+
+  if (typeof parsed === 'string') {
+    try {
+      const obj = JSON.parse(parsed);
+      if (obj && typeof obj === 'object') parsed = obj;
+    } catch {
+      return parsed;
+    }
+  }
+
+  if (parsed && typeof parsed === 'object' && !Array.isArray(parsed)) {
+    const obj = parsed as Record<string, unknown>;
+    if (typeof obj.stdout === 'string' || typeof obj.stderr === 'string') {
+      const parts: string[] = [];
+      if (typeof obj.stdout === 'string' && obj.stdout) parts.push(obj.stdout);
+      if (typeof obj.stderr === 'string' && obj.stderr) parts.push(obj.stderr);
+      if (typeof obj.exitCode === 'number' && obj.exitCode !== 0) {
+        parts.push(`exit code: ${obj.exitCode}`);
+      }
+      if (parts.length > 0) return parts.join('\n');
+    }
+  }
+
+  if (typeof parsed === 'string') return parsed;
+  return JSON.stringify(parsed, null, 2);
+}
+
+export interface ToolCallProps extends HTMLAttributes<HTMLDivElement> {
+  name: string;
+  args?: Record<string, unknown>;
+  result?: unknown;
+  isError?: boolean;
+  isLoading?: boolean;
+  isInterrupted?: boolean;
+  /** Approval state for this tool call (from the approval gate). */
+  approvalStatus?: 'pending' | 'approved' | 'denied';
+  /** Called when user approves this tool call. */
+  onApprove?: () => void;
+  /** Called when user rejects this tool call. */
+  onReject?: () => void;
+}
+
+export const ToolCall = ({
+  name, args, result, isError, isLoading, isInterrupted,
+  approvalStatus, onApprove, onReject,
+  className, ...props
+}: ToolCallProps) => {
+  const { t } = useI18n();
+  const [expanded, setExpanded] = useState(false);
+  const cardRef = useRef<HTMLDivElement>(null);
+  const approveBtnRef = useRef<HTMLButtonElement>(null);
+  const [responded, setResponded] = useState(false);
+
+  const isPendingApproval = approvalStatus === 'pending' && !responded;
+
+  const handleApprove = useCallback(() => {
+    if (!isPendingApproval) return;
+    setResponded(true);
+    onApprove?.();
+  }, [isPendingApproval, onApprove]);
+
+  const handleReject = useCallback(() => {
+    if (!isPendingApproval) return;
+    setResponded(true);
+    onReject?.();
+  }, [isPendingApproval, onReject]);
+
+  // Keyboard: Enter = approve, Escape = reject (when pending)
+  const handleKeyDown = useCallback((e: React.KeyboardEvent) => {
+    if (!isPendingApproval) return;
+    if (e.key === 'Enter') { e.preventDefault(); handleApprove(); }
+    else if (e.key === 'Escape') { e.preventDefault(); handleReject(); }
+  }, [isPendingApproval, handleApprove, handleReject]);
+
+  // Auto-focus and auto-scroll when approval is pending
+  useEffect(() => {
+    if (isPendingApproval && cardRef.current) {
+      cardRef.current.scrollIntoView({ behavior: 'smooth', block: 'end' });
+      // Small delay to let the UI render, then expand and focus
+      setExpanded(true);
+      setTimeout(() => approveBtnRef.current?.focus(), 100);
+    }
+  }, [isPendingApproval]);
+
+  // Reset responded state when approvalStatus changes (e.g. new approval)
+  useEffect(() => {
+    if (approvalStatus === 'pending') setResponded(false);
+  }, [approvalStatus]);
+
+  // Border/bg color based on approval status
+  const borderClass = approvalStatus === 'pending'
+    ? 'border-yellow-500/30 bg-yellow-500/[0.04]'
+    : approvalStatus === 'approved'
+      ? 'border-green-500/20 bg-green-500/[0.03]'
+      : approvalStatus === 'denied'
+        ? 'border-red-500/20 bg-red-500/[0.03]'
+        : 'border-border/25 bg-muted/10';
+  const statusIconClass = 'shrink-0';
+
+  const statusIcon = approvalStatus === 'pending' ? (
+    <ShieldAlert size={12} className={cn('text-yellow-500/70', statusIconClass)} />
+  ) : isLoading ? (
+    <Loader2 size={12} className={cn('animate-spin text-blue-400/70', statusIconClass)} />
+  ) : isInterrupted ? (
+    <Slash size={12} className={cn('text-muted-foreground/55', statusIconClass)} />
+  ) : isError ? (
+    <XCircle size={12} className={cn('text-red-400/70', statusIconClass)} />
+  ) : result !== undefined ? (
+    <CheckCircle2 size={12} className={cn('text-green-400/70', statusIconClass)} />
+  ) : null;
+
+  return (
+    <div
+      ref={cardRef}
+      tabIndex={isPendingApproval ? 0 : undefined}
+      onKeyDown={isPendingApproval ? handleKeyDown : undefined}
+      className={cn('rounded-md border overflow-hidden text-[12px] outline-none', borderClass, className)}
+      {...props}
+    >
+      <button
+        type="button"
+        onClick={() => setExpanded(e => !e)}
+        className="w-full flex items-center gap-2 px-3 py-1.5 hover:bg-muted/20 transition-colors cursor-pointer"
+      >
+        {expanded
+          ? <ChevronDown size={12} className="text-muted-foreground/40 shrink-0" />
+          : <ChevronRight size={12} className="text-muted-foreground/40 shrink-0" />
+        }
+        {name === 'terminal_execute' && args?.command ? (
+          <span className="font-mono text-muted-foreground/70 truncate" title={String(args.command)}>
+            <span className="text-muted-foreground/40">$ </span>{String(args.command)}
+          </span>
+        ) : (
+          <span className="font-mono text-muted-foreground/70 truncate">{name}</span>
+        )}
+        <span className="flex-1" />
+        {/* Approval badge for resolved approvals */}
+        {approvalStatus === 'approved' && (
+          <Badge className="text-[10px] px-1.5 py-0 bg-green-600/20 text-green-400 border-green-600/30">
+            {t('ai.chat.toolApproved')}
+          </Badge>
+        )}
+        {approvalStatus === 'denied' && (
+          <Badge className="text-[10px] px-1.5 py-0 bg-red-600/20 text-red-400 border-red-600/30">
+            {t('ai.chat.toolDenied')}
+          </Badge>
+        )}
+        {statusIcon}
+      </button>
+
+      {expanded && (
+        <div className="border-t border-border/20">
+          {args && Object.keys(args).length > 0 && (
+            <div className="px-3 py-2">
+              <div className="text-[10px] font-medium uppercase tracking-wider text-muted-foreground/30 mb-1">Arguments</div>
+              <pre className="max-h-64 overflow-auto text-[11px] font-mono text-muted-foreground/50 whitespace-pre [overflow-wrap:normal]">
+                {JSON.stringify(args, null, 2)}
+              </pre>
+            </div>
+          )}
+
+          {/* Inline approval buttons */}
+          {isPendingApproval && (
+            <div className="px-3 py-2 border-t border-border/20">
+              <div className="flex items-center justify-between">
+                <span className="text-[10px] text-muted-foreground/30">
+                  {t('ai.chat.toolApprovalHint')}
+                </span>
+                <div className="flex items-center gap-1.5">
+                  <Button
+                    variant="outline"
+                    size="sm"
+                    className="h-6 px-2 text-[11px] border-red-500/20 text-red-400/80 hover:bg-red-500/10 hover:text-red-400"
+                    onClick={handleReject}
+                  >
+                    <X size={11} className="mr-0.5" />
+                    {t('ai.chat.reject')}
+                  </Button>
+                  <Button
+                    ref={approveBtnRef}
+                    size="sm"
+                    className="h-6 px-2.5 text-[11px] bg-green-600/80 hover:bg-green-600 text-white"
+                    onClick={handleApprove}
+                  >
+                    <Check size={11} className="mr-0.5" />
+                    {t('ai.chat.approve')}
+                  </Button>
+                </div>
+              </div>
+            </div>
+          )}
+
+          {result !== undefined && (
+            <div className="px-3 py-2 border-t border-border/20">
+              <div className="text-[10px] font-medium uppercase tracking-wider text-muted-foreground/30 mb-1">Result</div>
+              <pre className={cn(
+                'max-h-64 overflow-auto text-[11px] font-mono whitespace-pre [overflow-wrap:normal]',
+                isError ? 'text-red-400/60' : 'text-muted-foreground/50',
+              )}>
+                {formatToolResult(result)}
+              </pre>
+            </div>
+          )}
+          {isInterrupted && result === undefined && (
+            <div className="px-3 py-2 border-t border-border/20">
+              <div className="text-[10px] font-medium uppercase tracking-wider text-muted-foreground/30 mb-1">Status</div>
+              <div className="text-[11px] text-muted-foreground/50">
+                Interrupted
+              </div>
+            </div>
+          )}
+        </div>
+      )}
+    </div>
+  );
+};

components/ai/AgentIconBadge.tsx

@@ -0,0 +1,222 @@
+import React from 'react';
+import { cn } from '../../lib/utils';
+
+type AgentLike = {
+  id?: string;
+  name?: string;
+  type?: 'builtin' | 'external';
+  icon?: string;
+  command?: string;
+};
+
+type AgentIconKey =
+  | 'catty'
+  | 'openai'
+  | 'claude'
+  | 'anthropic'
+  | 'gemini'
+  | 'google'
+  | 'ollama'
+  | 'openrouter'
+  | 'zed'
+  | 'atom'
+| 'terminal'
+  | 'plus';
+
+type AgentIconVisual = {
+  src: string;
+  badgeClassName: string;
+  imageClassName: string;
+};
+
+const AGENT_ICON_VISUALS: Record<AgentIconKey, AgentIconVisual> = {
+  catty: {
+    src: '/ai/agents/catty.svg',
+    badgeClassName: 'border-violet-500/20 bg-violet-500/10',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert opacity-90',
+  },
+  openai: {
+    src: '/ai/providers/openai.svg',
+    badgeClassName: 'border-emerald-500/22 bg-emerald-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  claude: {
+    src: '/ai/agents/claude.svg',
+    badgeClassName: 'border-orange-500/22 bg-orange-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  anthropic: {
+    src: '/ai/providers/anthropic.svg',
+    badgeClassName: 'border-orange-500/22 bg-orange-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  gemini: {
+    src: '/ai/agents/gemini.svg',
+    badgeClassName: 'border-sky-500/22 bg-sky-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  google: {
+    src: '/ai/providers/google.svg',
+    badgeClassName: 'border-sky-500/22 bg-sky-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  ollama: {
+    src: '/ai/providers/ollama.svg',
+    badgeClassName: 'border-violet-500/22 bg-violet-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  openrouter: {
+    src: '/ai/providers/openrouter.svg',
+    badgeClassName: 'border-fuchsia-500/22 bg-fuchsia-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  zed: {
+    src: '/ai/agents/zed.svg',
+    badgeClassName: 'border-cyan-500/22 bg-cyan-500/12',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert',
+  },
+  atom: {
+    src: '/ai/agents/atom.svg',
+    badgeClassName: 'border-amber-500/18 bg-amber-500/10',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert opacity-90',
+  },
+  terminal: {
+    src: '/ai/agents/terminal.svg',
+    badgeClassName: 'border-white/8 bg-white/[0.04]',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert opacity-90',
+  },
+  plus: {
+    src: '/ai/agents/plus.svg',
+    badgeClassName: 'border-white/8 bg-white/[0.04]',
+    imageClassName: 'object-contain dark:brightness-0 dark:invert opacity-85',
+  },
+};
+
+function normalizeToken(value?: string): string {
+  return (value ?? '').toLowerCase().replace(/[^a-z0-9]+/g, '');
+}
+
+function getAgentIconKey(agent: AgentLike | 'add-more'): AgentIconKey {
+  if (agent === 'add-more') {
+    return 'plus';
+  }
+
+  if (agent.type === 'builtin') {
+    return 'catty';
+  }
+
+  const tokens = [
+    normalizeToken(agent.icon),
+    normalizeToken(agent.command),
+    normalizeToken(agent.name),
+    normalizeToken(agent.id),
+  ].filter(Boolean);
+
+  if (tokens.some((token) => token.includes('claude'))) {
+    return 'claude';
+  }
+  if (tokens.some((token) => token.includes('anthropic'))) {
+    return 'anthropic';
+  }
+  if (
+    tokens.some(
+      (token) =>
+        token.includes('codex') ||
+        token.includes('openai') ||
+        token.includes('chatgpt'),
+    )
+  ) {
+    return 'openai';
+  }
+  if (
+    tokens.some(
+      (token) =>
+        token.includes('gemini') ||
+        token.includes('google') ||
+        token.includes('googlegemini'),
+    )
+  ) {
+    return 'gemini';
+  }
+  if (tokens.some((token) => token.includes('ollama'))) {
+    return 'ollama';
+  }
+  if (tokens.some((token) => token.includes('openrouter'))) {
+    return 'openrouter';
+  }
+  if (tokens.some((token) => token.includes('zed'))) {
+    return 'zed';
+  }
+  if (tokens.some((token) => token.includes('factory'))) {
+    return 'atom';
+  }
+
+  return 'terminal';
+}
+
+export const AgentIconBadge: React.FC<{
+  agent: AgentLike | 'add-more';
+  size?: 'xs' | 'sm' | 'md' | 'lg';
+  variant?: 'plain' | 'badge';
+  className?: string;
+}> = ({ agent, size = 'md', variant = 'badge', className }) => {
+  const visual = AGENT_ICON_VISUALS[getAgentIconKey(agent)];
+  const badgeSize =
+    size === 'xs'
+      ? 'h-4 w-4 rounded-sm'
+      : size === 'sm'
+        ? 'h-7 w-7 rounded-lg'
+        : size === 'lg'
+          ? 'h-10 w-10 rounded-xl'
+          : 'h-8 w-8 rounded-lg';
+  const imageSize =
+    size === 'xs'
+      ? 'h-3.5 w-3.5'
+      : size === 'sm'
+        ? 'h-3.5 w-3.5'
+        : size === 'lg'
+          ? 'h-5 w-5'
+          : 'h-4 w-4';
+
+  if (variant === 'plain') {
+    return (
+      <div
+        aria-hidden="true"
+        className={cn('shrink-0', imageSize, className)}
+        style={{
+          maskImage: `url(${visual.src})`,
+          WebkitMaskImage: `url(${visual.src})`,
+          maskSize: 'contain',
+          WebkitMaskSize: 'contain',
+          maskRepeat: 'no-repeat',
+          WebkitMaskRepeat: 'no-repeat',
+          maskPosition: 'center',
+          WebkitMaskPosition: 'center',
+          backgroundColor: 'currentColor',
+        }}
+      />
+    );
+  }
+
+  return (
+    <div
+      data-agent-badge=""
+      className={cn(
+        'flex shrink-0 items-center justify-center overflow-hidden border',
+        badgeSize,
+        visual.badgeClassName,
+        className,
+      )}
+    >
+      <img
+        src={visual.src}
+        alt=""
+        aria-hidden="true"
+        draggable={false}
+        className={cn(imageSize, visual.imageClassName)}
+      />
+    </div>
+  );
+};
+
+export default AgentIconBadge;

components/ai/AgentSelector.tsx

@@ -0,0 +1,280 @@
+/**
+ * AgentSelector - Dropdown for switching between AI agents
+ *
+ * Dark, grouped agent menu with local SVG branding for built-in,
+ * discovered, and external agents.
+ */
+
+import { ChevronDown, RefreshCw, Plus, Settings } from 'lucide-react';
+import React, { useCallback, useMemo, useState } from 'react';
+import { cn } from '../../lib/utils';
+import { useI18n } from '../../application/i18n/I18nProvider';
+import type { AgentInfo, ExternalAgentConfig, DiscoveredAgent } from '../../infrastructure/ai/types';
+import AgentIconBadge from './AgentIconBadge';
+import {
+  Dropdown,
+  DropdownContent,
+  DropdownTrigger,
+} from '../ui/dropdown';
+
+interface AgentSelectorProps {
+  currentAgentId: string;
+  externalAgents: ExternalAgentConfig[];
+  discoveredAgents?: DiscoveredAgent[];
+  isDiscovering?: boolean;
+  onSelectAgent: (agentId: string) => void;
+  onEnableDiscoveredAgent?: (agent: DiscoveredAgent) => void;
+  onRediscover?: () => void;
+  onManageAgents?: () => void;
+}
+
+const BUILTIN_AGENTS: AgentInfo[] = [
+  {
+    id: 'catty',
+    name: 'Catty Agent',
+    type: 'builtin',
+    description: 'Built-in terminal assistant',
+    available: true,
+  },
+];
+
+const SectionLabel: React.FC<{ children: React.ReactNode; action?: React.ReactNode }> = ({ children, action }) => (
+  <div className="px-4 pb-2 pt-2 flex items-center justify-between">
+    <span className="text-[10px] font-medium tracking-wide text-muted-foreground/52">
+      {children}
+    </span>
+    {action}
+  </div>
+);
+
+const AgentMenuRow: React.FC<{
+  agent: AgentInfo;
+  isActive?: boolean;
+  subtitle?: string;
+  onClick: () => void;
+}> = ({ agent, isActive, subtitle, onClick }) => {
+  return (
+    <button
+      onClick={onClick}
+      className={cn(
+        'flex h-10 w-full items-center gap-3 px-4 text-left text-[13px] text-foreground/86 transition-colors cursor-pointer hover:bg-muted focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-primary/30',
+        isActive && 'bg-muted',
+      )}
+    >
+      <AgentIconBadge agent={agent} size="xs" variant="plain" className="opacity-78" />
+      <div className="min-w-0 flex-1">
+        <span className="block truncate">{agent.name}</span>
+        {subtitle && (
+          <span className="block truncate text-[10px] text-muted-foreground/40">{subtitle}</span>
+        )}
+      </div>
+    </button>
+  );
+};
+
+const DiscoveredAgentRow: React.FC<{
+  agent: DiscoveredAgent;
+  onEnable: () => void;
+}> = ({ agent, onEnable }) => {
+  const agentLike: AgentInfo = {
+    id: `discovered_${agent.command}`,
+    name: agent.name,
+    type: 'external',
+    icon: agent.icon,
+    command: agent.command,
+    available: true,
+  };
+
+  return (
+    <div className="flex h-10 w-full items-center gap-3 rounded-md px-4 text-[13px]">
+      <AgentIconBadge agent={agentLike} size="xs" variant="plain" className="opacity-78" />
+      <div className="min-w-0 flex-1">
+        <span className="block truncate text-foreground/86">{agent.name}</span>
+        <span className="block truncate text-[10px] text-muted-foreground/40">
+          {agent.version || agent.path}
+        </span>
+      </div>
+      <button
+        onClick={onEnable}
+        className="shrink-0 rounded-md px-2 py-0.5 text-[11px] font-medium text-primary/80 hover:bg-primary/10 hover:text-primary transition-colors cursor-pointer"
+        title={`Enable ${agent.name}`}
+      >
+        <Plus size={12} />
+      </button>
+    </div>
+  );
+};
+
+const AgentSelector: React.FC<AgentSelectorProps> = ({
+  currentAgentId,
+  externalAgents,
+  discoveredAgents = [],
+  isDiscovering = false,
+  onSelectAgent,
+  onEnableDiscoveredAgent,
+  onRediscover,
+  onManageAgents,
+}) => {
+  const { t } = useI18n();
+  const [open, setOpen] = useState(false);
+
+  const enabledExternalAgents = useMemo(
+    () =>
+      externalAgents
+        .filter((agent) => agent.enabled)
+        .map(
+          (agent): AgentInfo => ({
+            id: agent.id,
+            name: agent.name,
+            type: 'external',
+            icon: agent.icon,
+            command: agent.command,
+            args: agent.args,
+            available: true,
+          }),
+        ),
+    [externalAgents],
+  );
+
+  // Discovered agents not yet added to external agents
+  const unconfiguredDiscovered = useMemo(
+    () =>
+      discoveredAgents.filter(
+        (da) => !externalAgents.some((ea) => ea.command === da.command || ea.command === da.path),
+      ),
+    [discoveredAgents, externalAgents],
+  );
+
+  const allAgents = useMemo(
+    () => [...BUILTIN_AGENTS, ...enabledExternalAgents],
+    [enabledExternalAgents],
+  );
+
+  const currentAgent = useMemo(
+    () => allAgents.find((agent) => agent.id === currentAgentId) ?? BUILTIN_AGENTS[0],
+    [allAgents, currentAgentId],
+  );
+
+  const handleSelect = useCallback(
+    (agentId: string) => {
+      onSelectAgent(agentId);
+      setOpen(false);
+    },
+    [onSelectAgent],
+  );
+
+  const handleEnableDiscovered = useCallback(
+    (agent: DiscoveredAgent) => {
+      onEnableDiscoveredAgent?.(agent);
+      // After enabling, auto-select it
+      const agentId = `discovered_${agent.command}`;
+      onSelectAgent(agentId);
+      setOpen(false);
+    },
+    [onEnableDiscoveredAgent, onSelectAgent],
+  );
+
+  const handleManageAgents = useCallback(() => {
+    setOpen(false);
+    onManageAgents?.();
+  }, [onManageAgents]);
+
+  return (
+    <Dropdown open={open} onOpenChange={setOpen}>
+      <DropdownTrigger asChild>
+        <button
+          type="button"
+          className="group flex h-8 min-w-0 max-w-[170px] items-center gap-2 rounded-md px-2 text-left transition-colors hover:bg-muted focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-primary/28"
+        >
+          <AgentIconBadge
+            agent={currentAgent}
+            size="xs"
+            variant="plain"
+            className="opacity-78"
+          />
+          <span className="min-w-0 flex-1 truncate text-[13px] font-medium text-foreground/90">
+            {currentAgent.name}
+          </span>
+          <ChevronDown
+            size={12}
+            className={cn(
+              'shrink-0 text-muted-foreground/60 transition-transform',
+              open && 'rotate-180',
+            )}
+          />
+        </button>
+      </DropdownTrigger>
+
+      <DropdownContent
+        align="start"
+        sideOffset={6}
+        className="w-[288px] overflow-hidden rounded-2xl border border-border/50 bg-popover p-0 text-foreground shadow-lg supports-[backdrop-filter]:backdrop-blur-xl"
+      >
+        {BUILTIN_AGENTS.map((agent) => (
+          <AgentMenuRow
+            key={agent.id}
+            agent={agent}
+            isActive={currentAgentId === agent.id}
+            onClick={() => handleSelect(agent.id)}
+          />
+        ))}
+
+        {enabledExternalAgents.length > 0 && (
+          <>
+            <div className="mx-0 my-1 border-t border-border/50" />
+            <SectionLabel>{t('ai.chat.agents')}</SectionLabel>
+            {enabledExternalAgents.map((agent) => (
+              <AgentMenuRow
+                key={agent.id}
+                agent={agent}
+                isActive={currentAgentId === agent.id}
+                subtitle={agent.command}
+                onClick={() => handleSelect(agent.id)}
+              />
+            ))}
+          </>
+        )}
+
+        {unconfiguredDiscovered.length > 0 && (
+          <>
+            <div className="mx-0 my-1 border-t border-border/50" />
+            <SectionLabel
+              action={
+                onRediscover && (
+                  <button
+                    onClick={onRediscover}
+                    disabled={isDiscovering}
+                    className="text-[10px] text-muted-foreground/40 hover:text-muted-foreground/70 transition-colors cursor-pointer disabled:opacity-50"
+                    title={t('ai.chat.rescan')}
+                  >
+                    <RefreshCw size={10} className={cn(isDiscovering && 'animate-spin')} />
+                  </button>
+                )
+              }
+            >
+              {t('ai.chat.detectedOnMachine')}
+            </SectionLabel>
+            {unconfiguredDiscovered.map((agent) => (
+              <DiscoveredAgentRow
+                key={agent.command}
+                agent={agent}
+                onEnable={() => handleEnableDiscovered(agent)}
+              />
+            ))}
+          </>
+        )}
+
+        <div className="mx-0 my-1 border-t border-border/50" />
+        <button
+          onClick={handleManageAgents}
+          className="flex h-10 w-full items-center gap-3 px-4 text-left text-[13px] text-foreground/82 transition-colors cursor-pointer hover:bg-muted focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-primary/30"
+        >
+          <Settings size={16} className="opacity-72 shrink-0" />
+          <span className="min-w-0 flex-1 truncate">{t('ai.agentSettings')}</span>
+        </button>
+      </DropdownContent>
+    </Dropdown>
+  );
+};
+
+export default React.memo(AgentSelector);

components/ai/ChatInput.tsx

@@ -0,0 +1,562 @@
+/**
+ * ChatInput - Zed-style bottom input area for the AI chat panel
+ *
+ * Thin wrapper around the AI Elements prompt-input components.
+ * Bordered textarea with monospace placeholder, expand toggle,
+ * and a bottom toolbar with muted controls + subtle send button.
+ */
+
+import { AtSign, Check, ChevronDown, ChevronRight, Cpu, Expand, Eye, FileText, ImageIcon, Plus, ShieldCheck, X, Zap } from 'lucide-react';
+import React, { useCallback, useRef, useState } from 'react';
+import { useI18n } from '../../application/i18n/I18nProvider';
+import { createPortal } from 'react-dom';
+import type { FormEvent } from 'react';
+import type { UploadedFile } from '../../application/state/useFileUpload';
+import {
+  PromptInput,
+  PromptInputFooter,
+  PromptInputSubmit,
+  PromptInputTextarea,
+  PromptInputTools,
+} from '../ai-elements/prompt-input';
+import type { PromptInputStatus } from '../ai-elements/prompt-input';
+import { formatThinkingLabel } from '../../infrastructure/ai/types';
+import type { AgentModelPreset, AIPermissionMode } from '../../infrastructure/ai/types';
+
+interface ChatInputProps {
+  value: string;
+  onChange: (value: string) => void;
+  onSend: () => void;
+  onStop?: () => void;
+  isStreaming?: boolean;
+  disabled?: boolean;
+  providerName?: string;
+  modelName?: string;
+  agentName?: string;
+  placeholder?: string;
+  /** Available model presets for the current agent */
+  modelPresets?: AgentModelPreset[];
+  /** Currently selected model ID */
+  selectedModelId?: string;
+  /** Callback when user selects a model */
+  onModelSelect?: (modelId: string) => void;
+  /** Attached files (images, PDFs, etc.) */
+  files?: UploadedFile[];
+  /** Callback to add files (paste/drop) */
+  onAddFiles?: (files: File[]) => void;
+  /** Callback to remove a file */
+  onRemoveFile?: (id: string) => void;
+  /** Available hosts for @ mention */
+  hosts?: Array<{ sessionId: string; hostname: string; label: string; connected: boolean }>;
+  /** Permission mode (only shown for Catty Agent) */
+  permissionMode?: AIPermissionMode;
+  /** Callback when user changes permission mode */
+  onPermissionModeChange?: (mode: AIPermissionMode) => void;
+}
+
+const ChatInput: React.FC<ChatInputProps> = ({
+  value,
+  onChange,
+  onSend,
+  onStop,
+  isStreaming = false,
+  disabled = false,
+  providerName,
+  modelName,
+  agentName,
+  placeholder,
+  modelPresets = [],
+  selectedModelId,
+  onModelSelect,
+  files = [],
+  onAddFiles,
+  onRemoveFile,
+  hosts = [],
+  permissionMode,
+  onPermissionModeChange,
+}) => {
+  const { t } = useI18n();
+  const [expanded, setExpanded] = useState(false);
+  // Consolidate menu state into a single discriminated union to prevent multiple menus open simultaneously
+  type ActiveMenu = 'model' | 'attach' | 'atMention' | 'perm' | null;
+  const [activeMenu, setActiveMenu] = useState<ActiveMenu>(null);
+  const [menuPos, setMenuPos] = useState<{ left: number; bottom: number } | null>(null);
+  const [hoveredModelId, setHoveredModelId] = useState<string | null>(null);
+  const [showHostSubmenu, setShowHostSubmenu] = useState(false);
+
+  // Derived booleans for readability
+  const showModelPicker = activeMenu === 'model';
+  const showAttachMenu = activeMenu === 'attach';
+  const showAtMention = activeMenu === 'atMention';
+  const showPermPicker = activeMenu === 'perm';
+
+  const closeAllMenus = useCallback(() => {
+    setActiveMenu(null);
+    setMenuPos(null);
+    setHoveredModelId(null);
+    setShowHostSubmenu(false);
+  }, []);
+  const textareaRef = useRef<HTMLTextAreaElement>(null);
+  const modelBtnRef = useRef<HTMLButtonElement>(null);
+  const permBtnRef = useRef<HTMLButtonElement>(null);
+  const attachBtnRef = useRef<HTMLButtonElement>(null);
+  const fileInputRef = useRef<HTMLInputElement>(null);
+
+  const handleInputChange = useCallback((newValue: string) => {
+    onChange(newValue);
+    // Detect if user just typed @
+    if (
+      hosts.length > 0 &&
+      newValue.length > value.length &&
+      newValue.endsWith('@')
+    ) {
+      // Position the popover near the textarea
+      const el = textareaRef.current;
+      if (el) {
+        const rect = el.getBoundingClientRect();
+        setMenuPos({ left: rect.left + 12, bottom: window.innerHeight - rect.top + 4 });
+      }
+      setActiveMenu('atMention');
+    } else if (showAtMention && !newValue.includes('@')) {
+      setActiveMenu(null);
+    }
+  }, [onChange, value, hosts.length, showAtMention]);
+
+  const handleSelectAtMention = useCallback((host: { label: string; hostname: string }) => {
+    // Replace the trailing @ with @hostname
+    const name = host.label || host.hostname;
+    const lastAt = value.lastIndexOf('@');
+    const newValue = lastAt >= 0
+      ? value.slice(0, lastAt) + `@${name} `
+      : value + `@${name} `;
+    onChange(newValue);
+    closeAllMenus();
+  }, [value, onChange, closeAllMenus]);
+
+  const handlePaste = useCallback((e: React.ClipboardEvent) => {
+    const pastedFiles = Array.from(e.clipboardData.items)
+      .map((item) => item.getAsFile())
+      .filter(Boolean) as File[];
+    if (pastedFiles.length > 0) {
+      e.preventDefault();
+      onAddFiles?.(pastedFiles);
+    }
+  }, [onAddFiles]);
+
+  const handleDrop = useCallback((e: React.DragEvent) => {
+    e.preventDefault();
+    const droppedFiles = Array.from(e.dataTransfer.files);
+    if (droppedFiles.length > 0) {
+      onAddFiles?.(droppedFiles);
+    }
+  }, [onAddFiles]);
+
+  const defaultPlaceholder = agentName
+    ? t('ai.chat.placeholder').replace('{agent}', agentName)
+    : t('ai.chat.placeholderDefault');
+
+  const handleSubmit = useCallback(
+    (_text: string, _event: FormEvent<HTMLFormElement>) => {
+      onSend();
+    },
+    [onSend],
+  );
+
+  const status: PromptInputStatus = isStreaming ? 'streaming' : 'idle';
+
+  // Permission mode chip removed — agents run in autonomous mode
+
+  // selectedModelId may be "model/thinking" for codex
+  const selectedBaseModelId = selectedModelId?.split('/')[0];
+  const selectedThinking = selectedModelId?.includes('/') ? selectedModelId.split('/')[1] : undefined;
+  const selectedPreset = modelPresets.find(m => m.id === selectedBaseModelId);
+  const modelLabel = selectedPreset
+    ? selectedPreset.name + (selectedThinking ? ` / ${formatThinkingLabel(selectedThinking)}` : '')
+    : modelName || providerName || t('ai.chat.noModel');
+  const hasModelPicker = modelPresets.length > 0 && onModelSelect;
+  const chipClassName =
+    'inline-flex h-6 items-center gap-1 rounded-full px-1.5 text-[10.5px] text-foreground/72';
+  const iconButtonClassName =
+    'h-6 w-6 rounded-full bg-transparent text-foreground/62 hover:bg-muted/24 hover:text-foreground';
+
+  return (
+    <div className="shrink-0 px-4 pb-4">
+      <PromptInput onSubmit={handleSubmit}>
+        {/* File attachment chips */}
+        {files.length > 0 && (
+          <div className="flex gap-1.5 px-3 pt-2 pb-0.5 flex-wrap">
+            {files.map((file) => (
+              <div
+                key={file.id}
+                className="inline-flex items-center gap-1 h-6 pl-1.5 pr-1 rounded-md bg-muted/30 border border-border/30 text-[11px] text-foreground/70 group"
+              >
+                {file.mediaType.startsWith('image/') ? (
+                  <ImageIcon size={11} className="text-muted-foreground/60 shrink-0" />
+                ) : (
+                  <FileText size={11} className="text-muted-foreground/60 shrink-0" />
+                )}
+                <span className="truncate max-w-[80px]">{file.filename}</span>
+                <button
+                  type="button"
+                  onClick={() => onRemoveFile?.(file.id)}
+                  className="h-3.5 w-3.5 rounded-sm flex items-center justify-center opacity-50 hover:opacity-100 hover:bg-muted/50 transition-opacity cursor-pointer"
+                >
+                  <X size={8} />
+                </button>
+              </div>
+            ))}
+          </div>
+        )}
+        {/* Hidden file input */}
+        <input
+          ref={fileInputRef}
+          type="file"
+          accept="image/*"
+          multiple
+          className="hidden"
+          onChange={(e) => {
+            if (e.target.files?.length) {
+              onAddFiles?.(Array.from(e.target.files));
+              e.target.value = '';
+            }
+          }}
+        />
+
+        {/* Textarea with expand toggle */}
+        <div className="relative" onPaste={handlePaste} onDrop={handleDrop} onDragOver={(e) => e.preventDefault()}>
+          <PromptInputTextarea
+            ref={textareaRef}
+            value={value}
+            onChange={(e) => handleInputChange(e.target.value)}
+            placeholder={placeholder || defaultPlaceholder}
+            disabled={disabled}
+            className={expanded ? 'max-h-[220px]' : undefined}
+          />
+          <button
+            type="button"
+            onClick={() => setExpanded((e) => !e)}
+            className="absolute top-3.5 right-3 rounded-md p-1 text-muted-foreground/38 hover:text-muted-foreground/72 hover:bg-muted/25 transition-colors cursor-pointer"
+            title={expanded ? 'Collapse' : 'Expand'}
+          >
+            <Expand size={12} />
+          </button>
+        </div>
+
+        {/* @ mention popover */}
+        {showAtMention && hosts.length > 0 && menuPos && createPortal(
+          <>
+            <div className="fixed inset-0 z-[999]" onClick={closeAllMenus} />
+            <div
+              role="listbox"
+              aria-label="Mention host"
+              className="fixed z-[1000] min-w-[160px] rounded-lg border border-border/50 bg-popover shadow-lg py-1"
+              style={{ left: menuPos.left, bottom: menuPos.bottom }}
+            >
+              <div className="px-3 py-1 text-[10px] text-muted-foreground/40 tracking-wide">{t('ai.chat.menuHosts')}</div>
+              {hosts.map(host => (
+                <button
+                  key={host.sessionId}
+                  type="button"
+                  role="option"
+                  onClick={() => handleSelectAtMention(host)}
+                  className="w-full flex items-center gap-2 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer whitespace-nowrap"
+                >
+                  <span className={`h-1.5 w-1.5 rounded-full shrink-0 ${host.connected ? 'bg-green-500' : 'bg-muted-foreground/30'}`} />
+                  <span className="text-foreground/85 truncate">{host.label || host.hostname}</span>
+                  {host.label && host.hostname !== host.label && (
+                    <span className="text-[10px] text-muted-foreground/40">{host.hostname}</span>
+                  )}
+                </button>
+              ))}
+            </div>
+          </>,
+          document.body,
+        )}
+
+        {/* Footer toolbar */}
+        <PromptInputFooter className="gap-1.5 border-t-0 bg-transparent px-3 pb-2 pt-0">
+          <PromptInputTools className="gap-1 flex-wrap">
+            <button
+              ref={attachBtnRef}
+              type="button"
+              onClick={() => {
+                if (!showAttachMenu) {
+                  const rect = attachBtnRef.current?.getBoundingClientRect();
+                  if (rect) setMenuPos({ left: rect.left, bottom: window.innerHeight - rect.top + 6 });
+                  setActiveMenu('attach');
+                } else {
+                  closeAllMenus();
+                }
+              }}
+              className={iconButtonClassName}
+              title="Attach"
+              aria-label="Attach file"
+              aria-expanded={showAttachMenu}
+            >
+              <Plus size={13} />
+            </button>
+            {showAttachMenu && menuPos && createPortal(
+              <>
+                <div className="fixed inset-0 z-[999]" onClick={closeAllMenus} />
+                <div
+                  role="menu"
+                  className="fixed z-[1000] min-w-[170px] rounded-lg border border-border/50 bg-popover shadow-lg py-1"
+                  style={{ left: menuPos.left, bottom: menuPos.bottom }}
+                >
+                  <div className="px-3 py-1 text-[10px] text-muted-foreground/40 tracking-wide">{t('ai.chat.menuContext')}</div>
+                  <button
+                    type="button"
+                    role="menuitem"
+                    onClick={() => { fileInputRef.current?.setAttribute('accept', '*/*'); fileInputRef.current?.click(); closeAllMenus(); }}
+                    className="w-full flex items-center gap-2.5 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer whitespace-nowrap"
+                  >
+                    <FileText size={13} className="text-muted-foreground/60" />
+                    <span className="text-foreground/85">{t('ai.chat.menuFiles')}</span>
+                  </button>
+                  <button
+                    type="button"
+                    role="menuitem"
+                    onClick={() => { fileInputRef.current?.setAttribute('accept', 'image/*'); fileInputRef.current?.click(); closeAllMenus(); }}
+                    className="w-full flex items-center gap-2.5 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer whitespace-nowrap"
+                  >
+                    <ImageIcon size={13} className="text-muted-foreground/60" />
+                    <span className="text-foreground/85">{t('ai.chat.menuImage')}</span>
+                  </button>
+                  <div
+                    className="relative"
+                    onMouseEnter={() => setShowHostSubmenu(true)}
+                    onMouseLeave={() => setShowHostSubmenu(false)}
+                    onFocus={() => setShowHostSubmenu(true)}
+                    onBlur={(e) => { if (!e.currentTarget.contains(e.relatedTarget)) setShowHostSubmenu(false); }}
+                  >
+                    <button
+                      type="button"
+                      role="menuitem"
+                      aria-label="Mention host"
+                      aria-expanded={showHostSubmenu && hosts.length > 0}
+                      className="w-full flex items-center gap-2.5 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer whitespace-nowrap"
+                    >
+                      <AtSign size={13} className="text-muted-foreground/60" />
+                      <span className="flex-1 text-foreground/85">{t('ai.chat.menuMentionHost')}</span>
+                      {hosts.length > 0 && <ChevronRight size={10} className="text-muted-foreground/50" />}
+                    </button>
+                    {showHostSubmenu && hosts.length > 0 && (
+                      <div role="menu" className="absolute left-full top-0 ml-1 min-w-[160px] rounded-lg border border-border/50 bg-popover shadow-lg py-1 z-[1001]">
+                        {hosts.map(host => (
+                          <button
+                            key={host.sessionId}
+                            type="button"
+                            role="menuitem"
+                            onClick={() => {
+                              const mention = `@${host.label || host.hostname} `;
+                              onChange(value + mention);
+                              closeAllMenus();
+                            }}
+                            className="w-full flex items-center gap-2 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer whitespace-nowrap"
+                          >
+                            <span className={`h-1.5 w-1.5 rounded-full shrink-0 ${host.connected ? 'bg-green-500' : 'bg-muted-foreground/30'}`} />
+                            <span className="text-foreground/85 truncate">{host.label || host.hostname}</span>
+                            {host.label && host.hostname !== host.label && (
+                              <span className="text-[10px] text-muted-foreground/40">{host.hostname}</span>
+                            )}
+                          </button>
+                        ))}
+                      </div>
+                    )}
+                  </div>
+                </div>
+              </>,
+              document.body,
+            )}
+            <button
+              ref={modelBtnRef}
+              type="button"
+              onClick={() => {
+                if (!hasModelPicker) return;
+                if (!showModelPicker) {
+                  const rect = modelBtnRef.current?.getBoundingClientRect();
+                  if (rect) setMenuPos({ left: rect.left, bottom: window.innerHeight - rect.top + 6 });
+                  setActiveMenu('model');
+                } else {
+                  closeAllMenus();
+                }
+              }}
+              className={`${chipClassName} ${hasModelPicker ? 'cursor-pointer hover:bg-muted/24 transition-colors' : ''}`}
+              aria-label="Select model"
+              aria-expanded={showModelPicker}
+            >
+              <Cpu size={11} className="text-muted-foreground/64" />
+              <span className="truncate max-w-[82px]">{modelLabel}</span>
+              {hasModelPicker && <ChevronDown size={9} className="text-muted-foreground/50" />}
+            </button>
+            {showModelPicker && hasModelPicker && menuPos && createPortal(
+              <>
+                <div className="fixed inset-0 z-[999]" onClick={closeAllMenus} />
+                <div
+                  role="listbox"
+                  aria-label="Select model"
+                  className="fixed z-[1000] min-w-[160px] rounded-lg border border-border/50 bg-popover shadow-lg py-1"
+                  style={{ left: menuPos.left, bottom: menuPos.bottom }}
+                  onMouseLeave={() => setHoveredModelId(null)}
+                >
+                  {modelPresets.map(preset => {
+                    const isSelected = preset.id === selectedBaseModelId;
+                    const hasThinking = preset.thinkingLevels && preset.thinkingLevels.length > 0;
+                    return (
+                      <div
+                        key={preset.id}
+                        className="relative"
+                        onMouseEnter={() => setHoveredModelId(hasThinking ? preset.id : null)}
+                        onFocus={() => { if (hasThinking) setHoveredModelId(preset.id); }}
+                        onBlur={(e) => { if (!e.currentTarget.contains(e.relatedTarget)) setHoveredModelId(null); }}
+                      >
+                        <button
+                          type="button"
+                          role="option"
+                          aria-selected={isSelected}
+                          onClick={() => {
+                            if (!hasThinking) {
+                              onModelSelect?.(preset.id);
+                              closeAllMenus();
+                            }
+                          }}
+                          className="w-full flex items-center gap-1.5 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer whitespace-nowrap"
+                        >
+                          {isSelected ? <Check size={11} className="text-primary shrink-0" /> : <span className="w-[11px] shrink-0" />}
+                          <span className="flex-1 text-foreground/85">{preset.name}</span>
+                          {preset.description && <span className="text-[10px] text-muted-foreground/50 mr-1">{preset.description}</span>}
+                          {hasThinking && <ChevronRight size={10} className="text-muted-foreground/50" />}
+                        </button>
+                        {/* Thinking level sub-menu */}
+                        {hasThinking && hoveredModelId === preset.id && (
+                          <div role="listbox" aria-label="Thinking level" className="absolute left-full top-0 ml-1 min-w-[120px] rounded-lg border border-border/50 bg-popover shadow-lg py-1 z-[1001]">
+                            {preset.thinkingLevels!.map(level => {
+                              const fullId = `${preset.id}/${level}`;
+                              const isLevelSelected = selectedModelId === fullId;
+                              return (
+                                <button
+                                  key={level}
+                                  type="button"
+                                  role="option"
+                                  aria-selected={isLevelSelected}
+                                  tabIndex={0}
+                                  onClick={() => {
+                                    onModelSelect?.(fullId);
+                                    closeAllMenus();
+                                  }}
+                                  onKeyDown={(e) => {
+                                    if (e.key === 'Enter' || e.key === ' ') {
+                                      e.preventDefault();
+                                      onModelSelect?.(fullId);
+                                      closeAllMenus();
+                                    } else if (e.key === 'Escape') {
+                                      e.preventDefault();
+                                      closeAllMenus();
+                                    }
+                                  }}
+                                  className="w-full flex items-center gap-1.5 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer whitespace-nowrap"
+                                >
+                                  {isLevelSelected ? <Check size={11} className="text-primary shrink-0" /> : <span className="w-[11px] shrink-0" />}
+                                  <span className="text-foreground/85">{formatThinkingLabel(level)}</span>
+                                </button>
+                              );
+                            })}
+                          </div>
+                        )}
+                      </div>
+                    );
+                  })}
+                </div>
+              </>,
+              document.body,
+            )}
+            {/* Permission mode chip — only for Catty Agent */}
+            {permissionMode && onPermissionModeChange && (
+              <>
+                <button
+                  ref={permBtnRef}
+                  type="button"
+                  onClick={() => {
+                    if (!showPermPicker) {
+                      const rect = permBtnRef.current?.getBoundingClientRect();
+                      if (rect) setMenuPos({ left: rect.left, bottom: window.innerHeight - rect.top + 6 });
+                      setActiveMenu('perm');
+                    } else {
+                      closeAllMenus();
+                    }
+                  }}
+                  className={`${chipClassName} cursor-pointer hover:bg-muted/24 transition-colors`}
+                  title={t('ai.safety.permissionMode')}
+                  aria-label="Permission mode"
+                  aria-expanded={showPermPicker}
+                >
+                  {permissionMode === 'observer' && <Eye size={11} className="text-blue-400/70" />}
+                  {permissionMode === 'confirm' && <ShieldCheck size={11} className="text-yellow-400/70" />}
+                  {permissionMode === 'autonomous' && <Zap size={11} className="text-green-400/70" />}
+                  <span className="truncate max-w-[72px]">
+                    {permissionMode === 'observer' && t('ai.chat.permObserver')}
+                    {permissionMode === 'confirm' && t('ai.chat.permConfirm')}
+                    {permissionMode === 'autonomous' && t('ai.chat.permAuto')}
+                  </span>
+                  <ChevronDown size={9} className="text-muted-foreground/50" />
+                </button>
+                {showPermPicker && menuPos && createPortal(
+                  <>
+                    <div className="fixed inset-0 z-[999]" onClick={closeAllMenus} />
+                    <div
+                      role="listbox"
+                      aria-label="Permission mode"
+                      className="fixed z-[1000] min-w-[180px] rounded-lg border border-border/50 bg-popover shadow-lg py-1"
+                      style={{ left: menuPos.left, bottom: menuPos.bottom }}
+                    >
+                      {([
+                        { mode: 'autonomous' as const, icon: Zap, color: 'text-green-400/70', label: t('ai.chat.permAuto'), desc: t('ai.chat.permAutoDesc') },
+                        { mode: 'confirm' as const, icon: ShieldCheck, color: 'text-yellow-400/70', label: t('ai.chat.permConfirm'), desc: t('ai.chat.permConfirmDesc') },
+                        { mode: 'observer' as const, icon: Eye, color: 'text-blue-400/70', label: t('ai.chat.permObserver'), desc: t('ai.chat.permObserverDesc') },
+                      ]).map(({ mode, icon: Icon, color, label, desc }) => (
+                        <button
+                          key={mode}
+                          type="button"
+                          role="option"
+                          aria-selected={permissionMode === mode}
+                          onClick={() => {
+                            onPermissionModeChange(mode);
+                            closeAllMenus();
+                          }}
+                          className="w-full flex items-center gap-2 px-3 py-1.5 text-left text-[12px] hover:bg-muted/30 transition-colors cursor-pointer"
+                        >
+                          {permissionMode === mode
+                            ? <Check size={11} className="text-primary shrink-0" />
+                            : <span className="w-[11px] shrink-0" />
+                          }
+                          <Icon size={12} className={`${color} shrink-0`} />
+                          <div className="flex-1 min-w-0">
+                            <div className="text-foreground/85">{label}</div>
+                            <div className="text-[10px] text-muted-foreground/40 leading-tight">{desc}</div>
+                          </div>
+                        </button>
+                      ))}
+                    </div>
+                  </>,
+                  document.body,
+                )}
+              </>
+            )}
+          </PromptInputTools>
+
+          <div className="flex-1 min-w-0" />
+
+          <div className="flex items-center gap-1">
+            <PromptInputSubmit
+              status={status}
+              onStop={onStop}
+              disabled={!value.trim() || disabled}
+            />
+          </div>
+        </PromptInputFooter>
+      </PromptInput>
+    </div>
+  );
+};
+
+export default React.memo(ChatInput);

components/ai/ChatMessageList.tsx

@@ -0,0 +1,434 @@
+/**
+ * ChatMessageList - Renders the list of chat messages
+ *
+ * Claude-Code-style: user messages in bordered bubbles (right-aligned),
+ * assistant responses as plain text (left-aligned, no border/bg).
+ * No avatars. Thinking blocks are collapsible.
+ */
+
+import { AlertCircle, FileText, RotateCcw, X, ZoomIn, ZoomOut } from 'lucide-react';
+import React, { useCallback, useEffect, useRef, useState } from 'react';
+import { useI18n } from '../../application/i18n/I18nProvider';
+import type { ChatMessage } from '../../infrastructure/ai/types';
+import { Dialog, DialogContent, DialogTitle } from '../ui/dialog';
+import {
+  Conversation,
+  ConversationContent,
+  ConversationScrollButton,
+} from '../ai-elements/conversation';
+import { Message, MessageContent, MessageResponse } from '../ai-elements/message';
+import { ToolCall } from '../ai-elements/tool-call';
+import ThinkingBlock from './ThinkingBlock';
+import {
+  onApprovalRequest,
+  onApprovalCleared,
+  replayPendingApprovals,
+  resolveApproval,
+  type ApprovalRequest,
+} from '../../infrastructure/ai/shared/approvalGate';
+
+interface ChatMessageListProps {
+  messages: ChatMessage[];
+  isStreaming?: boolean;
+  /** Active chat session ID — used to filter standalone MCP approval blocks */
+  activeSessionId?: string | null;
+}
+
+const ChatMessageList: React.FC<ChatMessageListProps> = ({ messages, isStreaming, activeSessionId }) => {
+  // Track pending approvals from the approval gate
+  const [pendingApprovals, setPendingApprovals] = useState<Map<string, ApprovalRequest>>(new Map());
+  const [resolvedApprovals, setResolvedApprovals] = useState<Map<string, boolean>>(new Map());
+
+  // Subscribe to approval gate events (SDK + MCP tool calls)
+  useEffect(() => {
+    const handler = (request: ApprovalRequest) => {
+      setPendingApprovals(prev => new Map(prev).set(request.toolCallId, request));
+    };
+    const unsub = onApprovalRequest(handler);
+    // Replay any approvals that fired while this component was unmounted
+    replayPendingApprovals(handler);
+    return unsub;
+  }, []);
+
+  // Subscribe to approval cleared/removed events (fired on session stop or timeout)
+  useEffect(() => {
+    return onApprovalCleared((clearedIds) => {
+      setPendingApprovals(prev => {
+        const m = new Map(prev);
+        for (const id of clearedIds) m.delete(id);
+        return m;
+      });
+    });
+  }, []);
+
+  const handleApprove = useCallback((toolCallId: string) => {
+    resolveApproval(toolCallId, true);
+    setPendingApprovals(prev => { const m = new Map(prev); m.delete(toolCallId); return m; });
+    setResolvedApprovals(prev => new Map(prev).set(toolCallId, true));
+  }, []);
+
+  const handleReject = useCallback((toolCallId: string) => {
+    resolveApproval(toolCallId, false);
+    setPendingApprovals(prev => { const m = new Map(prev); m.delete(toolCallId); return m; });
+    setResolvedApprovals(prev => new Map(prev).set(toolCallId, false));
+  }, []);
+  const [preview, setPreview] = useState<{ src: string; name: string } | null>(null);
+  const [zoom, setZoom] = useState(100);
+  const [dragged, setDragged] = useState(false);
+  const imgRef = useRef<HTMLImageElement>(null);
+  const dragPos = useRef({ x: 0, y: 0 });
+  const dragStart = useRef<{ startX: number; startY: number; origX: number; origY: number } | null>(null);
+
+  const applyTransform = useCallback((z: number, x: number, y: number, animate: boolean) => {
+    if (!imgRef.current) return;
+    imgRef.current.style.transition = animate ? 'transform 0.25s ease' : 'none';
+    imgRef.current.style.transform = `scale(${z / 100}) translate(${x / (z / 100)}px, ${y / (z / 100)}px)`;
+  }, []);
+
+  const zoomRef = useRef(100);
+  const setZoomAndRef = useCallback((fn: (z: number) => number) => {
+    setZoom(z => { const nz = fn(z); zoomRef.current = nz; return nz; });
+  }, []);
+  const zoomIn = useCallback(() => setZoomAndRef(z => { const nz = Math.min(z + 25, 200); applyTransform(nz, dragPos.current.x, dragPos.current.y, true); return nz; }), [applyTransform, setZoomAndRef]);
+  const zoomOut = useCallback(() => setZoomAndRef(z => { const nz = Math.max(z - 25, 25); applyTransform(nz, dragPos.current.x, dragPos.current.y, true); return nz; }), [applyTransform, setZoomAndRef]);
+
+  const onWheel = useCallback((e: React.WheelEvent) => {
+    e.preventDefault();
+    const delta = e.deltaY > 0 ? -10 : 10;
+    setZoomAndRef(z => {
+      const nz = Math.max(25, Math.min(200, z + delta));
+      applyTransform(nz, dragPos.current.x, dragPos.current.y, false);
+      return nz;
+    });
+  }, [applyTransform, setZoomAndRef]);
+  const openPreview = useCallback((src: string, name: string) => {
+    setZoom(100); zoomRef.current = 100;
+    setDragged(false);
+    dragPos.current = { x: 0, y: 0 };
+    setPreview({ src, name });
+  }, []);
+
+  const resetPreview = useCallback(() => {
+    setZoom(100); zoomRef.current = 100;
+    setDragged(false);
+    dragPos.current = { x: 0, y: 0 };
+    applyTransform(100, 0, 0, true);
+  }, [applyTransform]);
+
+  const onPointerDown = useCallback((e: React.PointerEvent) => {
+    e.preventDefault();
+    (e.target as HTMLElement).setPointerCapture(e.pointerId);
+    dragStart.current = { startX: e.clientX, startY: e.clientY, origX: dragPos.current.x, origY: dragPos.current.y };
+  }, []);
+
+  const onPointerMove = useCallback((e: React.PointerEvent) => {
+    if (!dragStart.current) return;
+    if ((e.buttons & 1) === 0) { dragStart.current = null; return; }
+    const x = dragStart.current.origX + (e.clientX - dragStart.current.startX);
+    const y = dragStart.current.origY + (e.clientY - dragStart.current.startY);
+    dragPos.current = { x, y };
+    applyTransform(zoomRef.current, x, y, false);
+  }, [applyTransform]);
+
+  const endDrag = useCallback(() => {
+    if (dragStart.current && (dragPos.current.x !== 0 || dragPos.current.y !== 0)) {
+      setDragged(true);
+    }
+    dragStart.current = null;
+  }, []);
+  const { t } = useI18n();
+  const visibleMessages = messages.filter(m => m.role !== 'system');
+  const resolvedToolCallIds = new Set(
+    visibleMessages
+      .filter((m) => m.role === 'tool')
+      .flatMap((m) => m.toolResults?.map((tr) => tr.toolCallId) ?? []),
+  );
+
+  // Build maps from toolCallId → toolName / toolArgs for display
+  const toolCallNames = new Map<string, string>();
+  const toolCallArgs = new Map<string, Record<string, unknown>>();
+  for (const m of visibleMessages) {
+    if (m.role === 'assistant' && m.toolCalls) {
+      for (const tc of m.toolCalls) {
+        toolCallNames.set(tc.id, tc.name);
+        if (tc.arguments) toolCallArgs.set(tc.id, tc.arguments);
+      }
+    }
+  }
+
+  if (visibleMessages.length === 0 && !isStreaming) {
+    return (
+      <div className="flex-1 flex items-center justify-center px-6">
+        <p className="text-[13px] text-muted-foreground/40 text-center">
+          {t('ai.chat.emptyHint')}
+        </p>
+      </div>
+    );
+  }
+
+  const lastAssistantMessage = visibleMessages.findLast(m => m.role === 'assistant');
+
+  return (
+    <>
+    <Conversation className="flex-1">
+      <ConversationContent className="gap-1.5 px-4 py-2">
+        {visibleMessages.map((message) => {
+          if (message.role === 'tool') {
+            return (
+              <React.Fragment key={message.id}>
+                {message.toolResults?.map((tr) => (
+                  <ToolCall
+                    key={tr.toolCallId}
+                    name={toolCallNames.get(tr.toolCallId) || tr.toolCallId}
+                    args={toolCallArgs.get(tr.toolCallId)}
+                    result={tr.content}
+                    isError={tr.isError}
+                  />
+                ))}
+              </React.Fragment>
+            );
+          }
+
+          const isUser = message.role === 'user';
+          const isLastAssistant = message === lastAssistantMessage;
+          const isThisStreaming = isStreaming && isLastAssistant;
+
+          return (
+            <Message key={message.id} from={message.role}>
+              <MessageContent>
+                {/* Thinking block */}
+                {!isUser && message.thinking && (
+                  <ThinkingBlock
+                    content={message.thinking}
+                    isStreaming={!!isThisStreaming && !message.content}
+                    durationMs={message.thinkingDurationMs}
+                  />
+                )}
+
+                {/* User attachments (images, files) — fallback to legacy `images` field */}
+                {isUser && (message.attachments ?? message.images)?.length && (
+                  <div className="flex gap-1.5 flex-wrap mb-1">
+                    {(message.attachments ?? message.images)!.map((att, i) => (
+                      att.mediaType.startsWith('image/') ? (
+                        <img
+                          key={att.filename ? `${att.filename}-${i}` : `att-${message.id}-${i}`}
+                          src={`data:${att.mediaType};base64,${att.base64Data}`}
+                          alt={att.filename || 'image'}
+                          className="max-h-[120px] max-w-[200px] rounded-md object-contain border border-border/20 cursor-pointer hover:opacity-80 transition-opacity"
+                          onClick={() => openPreview(`data:${att.mediaType};base64,${att.base64Data}`, att.filename || 'image')}
+                        />
+                      ) : (
+                        <div
+                          key={att.filename ? `${att.filename}-${i}` : `att-${message.id}-${i}`}
+                          className="inline-flex items-center gap-1.5 h-7 px-2 rounded-md bg-muted/20 border border-border/20 text-[11px] text-foreground/70"
+                        >
+                          <FileText size={12} className="text-muted-foreground/60 shrink-0" />
+                          <span className="truncate max-w-[120px]">{att.filename || 'file'}</span>
+                        </div>
+                      )
+                    ))}
+                  </div>
+                )}
+
+                {message.content && (
+                  isUser
+                    ? <div className="whitespace-pre-wrap break-words text-[13px]">{message.content}</div>
+                    : <MessageResponse isAnimating={isThisStreaming}>
+                        {message.content}
+                      </MessageResponse>
+                )}
+
+                {/* Tool calls */}
+                {message.toolCalls?.map((tc) => {
+                  const isPending = pendingApprovals.has(tc.id);
+                  const resolved = resolvedApprovals.get(tc.id);
+                  const approvalStatus = isPending
+                    ? 'pending' as const
+                    : resolved === true
+                      ? 'approved' as const
+                      : resolved === false
+                        ? 'denied' as const
+                        : undefined;
+
+                  return (
+                    <ToolCall
+                      key={tc.id}
+                      name={tc.name}
+                      args={tc.arguments}
+                      isLoading={isThisStreaming && message.executionStatus === 'running' && !isPending}
+                      isInterrupted={message.executionStatus === 'cancelled' && !resolvedToolCallIds.has(tc.id)}
+                      approvalStatus={approvalStatus}
+                      onApprove={() => handleApprove(tc.id)}
+                      onReject={() => handleReject(tc.id)}
+                    />
+                  );
+                })}
+
+                {/* Status text with shimmer */}
+                {message.statusText && (
+                  <div className="py-1">
+                    <span className="thinking-shimmer text-xs">{message.statusText}</span>
+                  </div>
+                )}
+
+                {/* Error info */}
+                {message.errorInfo && (
+                  <div className="flex items-start gap-2 px-3 py-2 rounded-md bg-destructive/10 border border-destructive/20 text-sm">
+                    <AlertCircle className="h-4 w-4 text-destructive shrink-0 mt-0.5" />
+                    <div className="flex-1 min-w-0">
+                      <p className="text-destructive font-medium whitespace-pre-wrap break-words [overflow-wrap:anywhere]">
+                        {message.errorInfo.message}
+                      </p>
+                      {message.errorInfo.retryable && (
+                        <p className="text-muted-foreground text-xs mt-1">{t('ai.chat.retryHint')}</p>
+                      )}
+                    </div>
+                  </div>
+                )}
+              </MessageContent>
+            </Message>
+          );
+        })}
+
+        {/* Standalone MCP/ACP approval requests (not tied to SDK tool calls) */}
+        {Array.from(pendingApprovals.entries())
+          .filter((entry) => entry[0].startsWith('mcp_approval_') && (!activeSessionId || entry[1].chatSessionId === activeSessionId))
+          .map((entry) => {
+            const [id, req] = entry;
+            return (
+              <ToolCall
+                key={id}
+                name={req.toolName}
+                args={req.args}
+                isLoading={false}
+                isInterrupted={false}
+                approvalStatus={'pending'}
+                onApprove={() => handleApprove(id)}
+                onReject={() => handleReject(id)}
+              />
+            );
+          })}
+        {/* Streaming indicator — only when no content and no thinking yet */}
+        {isStreaming && !lastAssistantMessage?.content && !lastAssistantMessage?.thinking && (
+          <div className="flex items-center gap-1 py-2">
+            <span className="w-1.5 h-1.5 rounded-full bg-muted-foreground/30 animate-bounce [animation-delay:0ms]" />
+            <span className="w-1.5 h-1.5 rounded-full bg-muted-foreground/30 animate-bounce [animation-delay:150ms]" />
+            <span className="w-1.5 h-1.5 rounded-full bg-muted-foreground/30 animate-bounce [animation-delay:300ms]" />
+          </div>
+        )}
+      </ConversationContent>
+      <ConversationScrollButton />
+    </Conversation>
+
+    {/* Image preview lightbox */}
+    <Dialog open={!!preview} onOpenChange={(open) => { if (!open) setPreview(null); }}>
+      <DialogContent
+        hideCloseButton
+        className="max-w-[min(90vw,800px)] max-h-[min(90vh,700px)] min-w-[280px] min-h-[200px] w-fit p-0 gap-0 focus:outline-none shadow-2xl"
+      >
+        {/* Title bar: filename | zoom controls | close — all in one flex row */}
+        <div className="flex items-center h-10 px-3 border-b border-border/40 gap-2 shrink-0">
+          <DialogTitle className="text-sm font-medium truncate flex-1">{preview?.name}</DialogTitle>
+          <div className="flex items-center gap-1 shrink-0">
+            <button
+              onClick={resetPreview}
+              disabled={zoom === 100 && !dragged}
+              className="p-1 rounded hover:bg-muted disabled:opacity-30 transition-colors text-muted-foreground"
+              aria-label={t('common.reset')}
+            >
+              <RotateCcw size={14} />
+            </button>
+            <div className="w-px h-3.5 bg-border/40 mx-0.5" />
+            <button
+              onClick={zoomOut}
+              disabled={zoom <= 25}
+              className="p-1 rounded hover:bg-muted disabled:opacity-30 transition-colors text-muted-foreground"
+              aria-label={t('common.zoomOut')}
+            >
+              <ZoomOut size={14} />
+            </button>
+            <span className="text-xs text-muted-foreground tabular-nums w-9 text-center select-none">{zoom}%</span>
+            <button
+              onClick={zoomIn}
+              disabled={zoom >= 200}
+              className="p-1 rounded hover:bg-muted disabled:opacity-30 transition-colors text-muted-foreground"
+              aria-label={t('common.zoomIn')}
+            >
+              <ZoomIn size={14} />
+            </button>
+          </div>
+          <button
+            onClick={() => setPreview(null)}
+            className="p-1 rounded hover:bg-muted transition-colors text-muted-foreground shrink-0"
+            aria-label={t('common.close')}
+          >
+            <X size={14} />
+          </button>
+        </div>
+        {/* Image area with drag support */}
+        {preview && (
+          <div
+            className="overflow-hidden flex items-center justify-center"
+            style={{
+              height: 'calc(min(90vh, 700px) - 40px)',
+              cursor: 'grab',
+              // Clamp aspect ratio: if image is extremely tall/wide, the container
+              // constrains it; object-contain handles the rest.
+              aspectRatio: 'auto',
+            }}
+            onPointerDown={onPointerDown}
+            onPointerMove={onPointerMove}
+            onPointerUp={endDrag}
+            onPointerCancel={endDrag}
+            onWheel={onWheel}
+            onLostPointerCapture={endDrag}
+          >
+            <img
+              ref={imgRef}
+              src={preview.src}
+              alt={preview.name}
+              draggable={false}
+              className="select-none max-w-full max-h-full object-contain"
+              style={{ transition: 'transform 0.25s ease' }}
+            />
+          </div>
+        )}
+      </DialogContent>
+    </Dialog>
+    </>
+  );
+};
+
+function areMessagesEqual(prev: ChatMessageListProps, next: ChatMessageListProps): boolean {
+  if (prev.isStreaming !== next.isStreaming) return false;
+  if (prev.activeSessionId !== next.activeSessionId) return false;
+  if (prev.messages.length !== next.messages.length) return false;
+  if (prev.messages === next.messages) return true;
+
+  // Shallow-compare each message by reference
+  for (let i = 0; i < prev.messages.length; i++) {
+    if (prev.messages[i] !== next.messages[i]) {
+      // For the last message during streaming, compare by content to avoid
+      // re-renders when only the array reference changed but content is the same
+      const p = prev.messages[i];
+      const n = next.messages[i];
+      if (
+        p.id !== n.id ||
+        p.content !== n.content ||
+        p.thinking !== n.thinking ||
+        p.role !== n.role ||
+        p.statusText !== n.statusText ||
+        p.executionStatus !== n.executionStatus ||
+        p.errorInfo !== n.errorInfo ||
+        p.toolCalls !== n.toolCalls ||
+        p.toolResults !== n.toolResults
+      ) {
+        return false;
+      }
+    }
+  }
+
+  return true;
+}
+
+export default React.memo(ChatMessageList, areMessagesEqual);

components/ai/ConversationExport.tsx

@@ -0,0 +1,82 @@
+/**
+ * ConversationExport - Dropdown button for exporting chat sessions
+ *
+ * Small download icon button with a dropdown offering Markdown, JSON,
+ * and Plain Text export formats.
+ */
+
+import { Download, FileJson, FileText, FileType } from 'lucide-react';
+import React, { useCallback } from 'react';
+import { useI18n } from '../../application/i18n/I18nProvider';
+import type { AISession } from '../../infrastructure/ai/types';
+import { Button } from '../ui/button';
+import {
+  Dropdown,
+  DropdownContent,
+  DropdownTrigger,
+} from '../ui/dropdown';
+
+interface ConversationExportProps {
+  session: AISession | null;
+  onExport: (format: 'md' | 'json' | 'txt') => void;
+  className?: string;
+}
+
+const EXPORT_OPTIONS = [
+  { format: 'md' as const, labelKey: 'ai.chat.exportMarkdown' as const, icon: FileText },
+  { format: 'json' as const, labelKey: 'ai.chat.exportJSON' as const, icon: FileJson },
+  { format: 'txt' as const, labelKey: 'ai.chat.exportPlainText' as const, icon: FileType },
+];
+
+const ConversationExport: React.FC<ConversationExportProps> = ({
+  session,
+  onExport,
+  className,
+}) => {
+  const { t } = useI18n();
+  const handleExport = useCallback(
+    (format: 'md' | 'json' | 'txt') => {
+      onExport(format);
+    },
+    [onExport],
+  );
+
+  const hasMessages = session && session.messages.length > 0;
+
+  return (
+    <Dropdown>
+      <DropdownTrigger asChild>
+        <Button
+          variant="ghost"
+          size="icon"
+          className={className ?? 'h-7 w-7 rounded-md text-muted-foreground/62 hover:bg-white/[0.05] hover:text-foreground'}
+          disabled={!hasMessages}
+          title={t('ai.chat.exportConversation')}
+        >
+          <Download size={14} />
+        </Button>
+      </DropdownTrigger>
+      <DropdownContent
+        align="end"
+        sideOffset={6}
+        className="w-40 rounded-xl border border-border/45 bg-[#111111]/98 p-1.5 text-foreground shadow-[0_20px_48px_rgba(0,0,0,0.48)] supports-[backdrop-filter]:bg-[#111111]/92 supports-[backdrop-filter]:backdrop-blur-xl"
+      >
+        <div className="px-2 py-1 text-[10px] font-medium uppercase tracking-[0.16em] text-muted-foreground/48">
+          {t('ai.chat.exportAs')}
+        </div>
+        {EXPORT_OPTIONS.map(({ format, labelKey, icon: Icon }) => (
+          <button
+            key={format}
+            onClick={() => handleExport(format)}
+            className="w-full flex items-center gap-2 px-2 py-1.5 text-[13px] rounded-lg transition-colors cursor-pointer hover:bg-white/[0.04]"
+          >
+            <Icon size={13} className="shrink-0 text-muted-foreground/70" />
+            <span>{t(labelKey)}</span>
+          </button>
+        ))}
+      </DropdownContent>
+    </Dropdown>
+  );
+};
+
+export default React.memo(ConversationExport);

components/ai/ThinkingBlock.tsx

@@ -0,0 +1,138 @@
+/**
+ * ThinkingBlock - Collapsible thinking/reasoning display
+ *
+ * - While streaming: expanded, "Thinking" label with shimmer + elapsed time
+ * - When done: auto-collapses to "Thought for Xs", click to expand
+ * - Content area has max-height with scroll and top gradient fade
+ */
+
+import { ChevronRight } from 'lucide-react';
+import React, { useCallback, useEffect, useRef, useState } from 'react';
+import { useI18n } from '../../application/i18n/I18nProvider';
+import { cn } from '../../lib/utils';
+
+interface ThinkingBlockProps {
+  content: string;
+  isStreaming: boolean;
+  durationMs?: number;
+}
+
+function formatDuration(ms: number): string {
+  const seconds = Math.floor(ms / 1000);
+  if (seconds < 60) return `${seconds}s`;
+  const minutes = Math.floor(seconds / 60);
+  const remaining = seconds % 60;
+  return `${minutes}m ${remaining}s`;
+}
+
+const ThinkingBlock: React.FC<ThinkingBlockProps> = ({
+  content,
+  isStreaming,
+  durationMs,
+}) => {
+  const { t } = useI18n();
+  const [isExpanded, setIsExpanded] = useState(isStreaming);
+  const [elapsed, setElapsed] = useState(0);
+  const wasStreamingRef = useRef(false);
+  const startRef = useRef(Date.now());
+  const scrollRef = useRef<HTMLDivElement>(null);
+
+  // Auto-collapse when streaming ends
+  useEffect(() => {
+    if (wasStreamingRef.current && !isStreaming) {
+      setIsExpanded(false);
+    }
+    wasStreamingRef.current = isStreaming;
+  }, [isStreaming]);
+
+  // Expand when streaming starts
+  useEffect(() => {
+    if (isStreaming) {
+      setIsExpanded(true);
+      startRef.current = Date.now();
+    }
+  }, [isStreaming]);
+
+  // Elapsed time ticker
+  useEffect(() => {
+    if (!isStreaming) return;
+    const timer = setInterval(() => {
+      setElapsed(Date.now() - startRef.current);
+    }, 1000);
+    return () => clearInterval(timer);
+  }, [isStreaming]);
+
+  // Auto-scroll to bottom while streaming
+  useEffect(() => {
+    if (isStreaming && isExpanded && scrollRef.current) {
+      scrollRef.current.scrollTop = scrollRef.current.scrollHeight;
+    }
+  }, [content, isStreaming, isExpanded]);
+
+  const toggle = useCallback(() => setIsExpanded(e => !e), []);
+
+  const displayDuration = durationMs || elapsed;
+  const preview = content.length > 60 ? content.slice(0, 60) + '…' : content;
+
+  return (
+    <div className="mb-0.5">
+      {/* Header */}
+      <button
+        onClick={toggle}
+        aria-expanded={isExpanded}
+        aria-controls="thinking-block-content"
+        className="group flex items-center gap-1.5 py-0.5 px-1 cursor-pointer text-left w-full rounded hover:bg-white/[0.03] transition-colors"
+      >
+        <ChevronRight
+          size={12}
+          className={cn(
+            'shrink-0 text-muted-foreground/50 transition-transform duration-200',
+            isExpanded && 'rotate-90',
+            !isExpanded && 'opacity-50',
+          )}
+        />
+        <span className="text-[12px] font-medium text-muted-foreground/70 whitespace-nowrap shrink-0">
+          {isStreaming ? (
+            <span className="thinking-shimmer">{t('ai.chat.thinking')}</span>
+          ) : (
+            displayDuration > 0
+              ? t('ai.chat.thoughtFor', { duration: formatDuration(displayDuration) })
+              : t('ai.chat.thought')
+          )}
+        </span>
+        {isStreaming && elapsed > 0 && (
+          <span className="text-[11px] text-muted-foreground/40 tabular-nums shrink-0">
+            {formatDuration(elapsed)}
+          </span>
+        )}
+        {!isExpanded && !isStreaming && preview && (
+          <span className="text-[11px] text-muted-foreground/40 truncate min-w-0">
+            {preview}
+          </span>
+        )}
+      </button>
+
+      {/* Content */}
+      {isExpanded && content && (
+        <div id="thinking-block-content" className="relative">
+          {/* Top gradient fade */}
+          {isStreaming && (
+            <div className="absolute inset-x-0 top-0 h-4 bg-gradient-to-b from-background to-transparent z-10 pointer-events-none" />
+          )}
+          <div
+            ref={scrollRef}
+            className={cn(
+              'px-5 text-[12px] text-muted-foreground/60 leading-relaxed whitespace-pre-wrap break-words',
+              isStreaming && 'overflow-y-auto scrollbar-hide max-h-36',
+              !isStreaming && 'max-h-36 overflow-y-auto scrollbar-hide',
+            )}
+          >
+            {content}
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default React.memo(ThinkingBlock);

components/ai/hooks/useAIChatStreaming.ts

@@ -0,0 +1,842 @@
+/**
+ * useAIChatStreaming — Encapsulates all streaming logic for the AI chat panel.
+ *
+ * Handles:
+ * - Catty agent streaming via Vercel AI SDK `streamText`
+ * - External agent streaming (ACP and raw process)
+ * - Text-delta batching via requestAnimationFrame
+ * - Abort controller management
+ * - Stream state tracking (per-session)
+ * - Error reporting
+ */
+
+import React, { useCallback, useEffect, useRef, useState } from 'react';
+import { streamText, stepCountIs, type ModelMessage } from 'ai';
+import type {
+  AIPermissionMode,
+  AISession,
+  ChatMessage,
+  ChatMessageAttachment,
+  ExternalAgentConfig,
+  ProviderAdvancedParams,
+  ProviderConfig,
+  WebSearchConfig,
+} from '../../../infrastructure/ai/types';
+import { isWebSearchReady } from '../../../infrastructure/ai/types';
+import { buildSystemPrompt } from '../../../infrastructure/ai/cattyAgent/systemPrompt';
+import { createModelFromConfig } from '../../../infrastructure/ai/sdk/providers';
+import { createCattyTools } from '../../../infrastructure/ai/sdk/tools';
+import type { NetcattyBridge, ExecutorContext } from '../../../infrastructure/ai/cattyAgent/executor';
+import { runExternalAgentTurn } from '../../../infrastructure/ai/externalAgentAdapter';
+import { runAcpAgentTurn } from '../../../infrastructure/ai/acpAgentAdapter';
+import { classifyError } from '../../../infrastructure/ai/errorClassifier';
+
+// -------------------------------------------------------------------
+// Stream chunk type interfaces (Issue #13: replace unsafe casts)
+// -------------------------------------------------------------------
+
+/** Shape of a text/text-delta chunk from the Vercel AI SDK fullStream. */
+interface TextDeltaChunk {
+  type: 'text' | 'text-delta';
+  text?: string;
+  textDelta?: string;
+}
+
+/** Shape of a reasoning chunk from the Vercel AI SDK fullStream. */
+interface ReasoningChunk {
+  type: 'reasoning' | 'reasoning-start' | 'reasoning-delta';
+  text?: string;
+}
+
+/** Shape of a tool-call chunk from the Vercel AI SDK fullStream. */
+interface ToolCallChunk {
+  type: 'tool-call';
+  toolCallId: string;
+  toolName: string;
+  input?: unknown;
+  args?: unknown;
+}
+
+/** Shape of a tool-result chunk from the Vercel AI SDK fullStream. */
+interface ToolResultChunk {
+  type: 'tool-result';
+  toolCallId: string;
+  output?: unknown;
+  result?: unknown;
+}
+
+/** Detect tool results that represent errors/denials (e.g. `{ error: "..." }` or `{ ok: false }`) */
+function isToolResultError(output: unknown): boolean {
+  if (output == null) return false;
+  
+  if (typeof output === 'object') {
+    const obj = output as Record<string, unknown>;
+    // Check for explicit error objects
+    if ('error' in obj && typeof obj.error === 'string') return true;
+    if ('ok' in obj && obj.ok === false) return true;
+  }
+  
+  // Check stringified JSON (common for tool result wrapping)
+  if (typeof output === 'string') {
+    try {
+      const parsed = JSON.parse(output);
+      if (parsed && typeof parsed === 'object') {
+        const parsedObj = parsed as Record<string, unknown>;
+        if ('error' in parsedObj && typeof parsedObj.error === 'string') return true;
+        if ('ok' in parsedObj && parsedObj.ok === false) return true;
+      }
+    } catch { /* not JSON, not an error */ }
+  }
+  
+  return false;
+}
+
+/** Shape of an error chunk from the Vercel AI SDK fullStream. */
+interface ErrorChunk {
+  type: 'error';
+  error: unknown;
+}
+
+/** Union of all stream chunk shapes we handle. */
+type StreamChunk =
+  | TextDeltaChunk
+  | ReasoningChunk
+  | ToolCallChunk
+  | ToolResultChunk
+  | ErrorChunk
+  | { type: 'reasoning-end' | 'text-start' | 'text-end' | 'start' | 'finish' | 'start-step' | 'finish-step' | 'tool-approval-request' };
+
+/** Shape of the netcatty bridge exposed on `window` (panel-specific subset). */
+export interface PanelBridge extends NetcattyBridge {
+  credentialsDecrypt?: (value: string) => Promise<string>;
+  aiSyncProviders?: (providers: Array<{ id: string; providerId: string; apiKey?: string; baseURL?: string; enabled: boolean }>) => Promise<{ ok: boolean }>;
+  aiSyncWebSearch?: (apiHost: string | null, apiKey: string | null) => Promise<{ ok: boolean }>;
+  aiMcpUpdateSessions?: (sessions: TerminalSessionInfo[], chatSessionId?: string) => Promise<unknown>;
+  aiAcpCleanup?: (chatSessionId: string) => Promise<{ ok: boolean }>;
+  [key: string]: ((...args: unknown[]) => unknown) | undefined;
+}
+
+/** Terminal session info used throughout the streaming hooks. */
+export interface TerminalSessionInfo {
+  sessionId: string;
+  hostId: string;
+  hostname: string;
+  label: string;
+  os?: string;
+  username?: string;
+  protocol?: string;
+  shellType?: string;
+  deviceType?: string;
+  connected: boolean;
+}
+
+/** Typed accessor for the netcatty bridge on the window object. */
+export function getNetcattyBridge(): PanelBridge | undefined {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  return (window as any).netcatty as PanelBridge | undefined;
+}
+
+// ApprovalInfo and PendingApprovalContext removed — approval is now handled
+// inside the tool's execute function via the approvalGate module.
+
+function generateId(): string {
+  return `msg-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`;
+}
+
+const sharedStreamingSessionIds = new Set<string>();
+const sharedAbortControllers = new Map<string, AbortController>();
+const streamingSubscribers = new Set<() => void>();
+
+function emitStreamingStoreChange(): void {
+  streamingSubscribers.forEach(listener => {
+    try {
+      listener();
+    } catch (err) {
+      console.error('[AIChatStreaming] Failed to notify streaming subscriber:', err);
+    }
+  });
+}
+
+// -------------------------------------------------------------------
+// Hook parameters
+// -------------------------------------------------------------------
+
+export interface UseAIChatStreamingParams {
+  maxIterations: number;
+  addMessageToSession: (sessionId: string, message: ChatMessage) => void;
+  updateLastMessage: (sessionId: string, updater: (msg: ChatMessage) => ChatMessage) => void;
+  updateMessageById: (sessionId: string, messageId: string, updater: (msg: ChatMessage) => ChatMessage) => void;
+}
+
+// -------------------------------------------------------------------
+// Hook return type
+// -------------------------------------------------------------------
+
+export interface UseAIChatStreamingReturn {
+  /** Set of session IDs currently streaming. */
+  streamingSessionIds: Set<string>;
+  /** Set or unset streaming state for a session. */
+  setStreamingForScope: (key: string, val: boolean) => void;
+  /** Ref to per-session abort controllers. */
+  abortControllersRef: React.MutableRefObject<Map<string, AbortController>>;
+  /** Process a Catty agent stream. */
+  processCattyStream: (
+    streamSessionId: string,
+    model: ReturnType<typeof createModelFromConfig>,
+    systemPrompt: string,
+    tools: ReturnType<typeof createCattyTools>,
+    sdkMessages: Array<ModelMessage>,
+    signal: AbortSignal,
+    currentAssistantMsgId: string,
+    advancedParams?: ProviderAdvancedParams,
+  ) => Promise<void>;
+  /** Send a message to the Catty agent (built-in). */
+  sendToCattyAgent: (
+    sessionId: string,
+    sendScopeKey: string,
+    trimmed: string,
+    abortController: AbortController,
+    currentSession: AISession | undefined,
+    assistantMsgId: string,
+    context: SendToCattyContext,
+    attachments?: ChatMessageAttachment[],
+  ) => Promise<void>;
+  /** Send a message to an external agent (ACP or raw process). */
+  sendToExternalAgent: (
+    sessionId: string,
+    trimmed: string,
+    agentConfig: ExternalAgentConfig,
+    abortController: AbortController,
+    attachedImages: Array<{ base64Data: string; mediaType: string; filename?: string }>,
+    context: SendToExternalContext,
+  ) => Promise<void>;
+  /** Report a streaming error to the chat. */
+  reportStreamError: (sessionId: string, abortSignal: AbortSignal, err: unknown) => void;
+}
+
+/** Context values needed by sendToCattyAgent that change frequently (avoids stale closures). */
+export interface SendToCattyContext {
+  activeProvider: ProviderConfig | undefined;
+  activeModelId: string;
+  scopeType: 'terminal' | 'workspace';
+  scopeTargetId?: string;
+  scopeLabel?: string;
+  globalPermissionMode: AIPermissionMode;
+  commandBlocklist?: string[];
+  terminalSessions: TerminalSessionInfo[];
+  webSearchConfig?: WebSearchConfig | null;
+  getExecutorContext?: () => ExecutorContext;
+  autoTitleSession: (sessionId: string, text: string) => void;
+}
+
+/** Context values needed by sendToExternalAgent that change frequently. */
+export interface SendToExternalContext {
+  existingSessionId?: string;
+  updateExternalSessionId?: (sessionId: string, externalSessionId: string | undefined) => void;
+  historyMessages?: Array<{ role: 'user' | 'assistant'; content: string }>;
+  terminalSessions: TerminalSessionInfo[];
+  providers: ProviderConfig[];
+  selectedAgentModel?: string;
+}
+
+// -------------------------------------------------------------------
+// Hook implementation
+// -------------------------------------------------------------------
+
+export function useAIChatStreaming({
+  maxIterations,
+  addMessageToSession,
+  updateLastMessage,
+  updateMessageById,
+}: UseAIChatStreamingParams): UseAIChatStreamingReturn {
+  // Per-session streaming state (keyed by sessionId)
+  const [streamingSessionIds, setStreamingSessions] = useState<Set<string>>(
+    () => new Set(sharedStreamingSessionIds),
+  );
+  useEffect(() => {
+    const syncFromStore = () => {
+      setStreamingSessions(new Set(sharedStreamingSessionIds));
+    };
+    streamingSubscribers.add(syncFromStore);
+    syncFromStore();
+    return () => {
+      streamingSubscribers.delete(syncFromStore);
+    };
+  }, []);
+
+  const setStreamingForScope = useCallback((key: string, val: boolean) => {
+    const hadKey = sharedStreamingSessionIds.has(key);
+    if (val) {
+      sharedStreamingSessionIds.add(key);
+    } else {
+      sharedStreamingSessionIds.delete(key);
+    }
+    if (hadKey !== val) {
+      emitStreamingStoreChange();
+    }
+  }, []);
+
+  // Per-scope abort controllers
+  const abortControllersRef = useRef<Map<string, AbortController>>(sharedAbortControllers);
+
+  // -------------------------------------------------------------------
+  // reportStreamError
+  // -------------------------------------------------------------------
+
+  const reportStreamError = useCallback((
+    sessionId: string,
+    abortSignal: AbortSignal,
+    err: unknown,
+  ) => {
+    if (abortSignal.aborted) return;
+    let errorStr: string;
+    if (err instanceof Error) errorStr = err.message;
+    else if (typeof err === 'object' && err !== null && 'message' in err) errorStr = String((err as { message: unknown }).message);
+    else if (typeof err === 'string') errorStr = err;
+    else { try { errorStr = JSON.stringify(err) ?? 'Unknown error'; } catch { errorStr = 'Unknown error'; } }
+    // Log the full unsanitized error for debugging
+    console.error('[AIChatSidePanel] Stream error (full):', errorStr);
+    const errorInfo = classifyError(errorStr);
+    updateLastMessage(sessionId, msg => ({
+      ...msg,
+      statusText: '',
+      executionStatus: msg.executionStatus === 'running' ? 'failed' : msg.executionStatus,
+    }));
+    addMessageToSession(sessionId, {
+      id: generateId(),
+      role: 'assistant',
+      content: '',
+      errorInfo,
+      timestamp: Date.now(),
+    });
+  }, [updateLastMessage, addMessageToSession]);
+
+  // -------------------------------------------------------------------
+  // processCattyStream
+  // -------------------------------------------------------------------
+
+  const processCattyStream = useCallback(async (
+    streamSessionId: string,
+    model: ReturnType<typeof createModelFromConfig>,
+    systemPrompt: string,
+    tools: ReturnType<typeof createCattyTools>,
+    sdkMessages: Array<ModelMessage>,
+    signal: AbortSignal,
+    currentAssistantMsgId: string,
+    advancedParams?: ProviderAdvancedParams,
+  ): Promise<void> => {
+    const result = streamText({
+      model,
+      messages: sdkMessages,
+      system: systemPrompt,
+      tools,
+      stopWhen: stepCountIs(maxIterations),
+      abortSignal: signal,
+      ...(advancedParams?.maxTokens != null && { maxOutputTokens: advancedParams.maxTokens }),
+      ...(advancedParams?.temperature != null && { temperature: advancedParams.temperature }),
+      ...(advancedParams?.topP != null && { topP: advancedParams.topP }),
+      ...(advancedParams?.frequencyPenalty != null && { frequencyPenalty: advancedParams.frequencyPenalty }),
+      ...(advancedParams?.presencePenalty != null && { presencePenalty: advancedParams.presencePenalty }),
+    });
+
+    // Track the current assistant message ID so updates target the correct message
+    let activeMsgId = currentAssistantMsgId;
+    let lastAddedRole: 'assistant' | 'tool' = 'assistant';
+    const reader = result.fullStream.getReader();
+
+    // -- Text-delta batching: accumulate deltas and flush periodically --
+    let pendingText = '';
+    let rafId: number | null = null;
+
+    const flushText = () => {
+      if (pendingText) {
+        const text = pendingText;
+        pendingText = '';
+        if (lastAddedRole === 'tool') {
+          const newId = generateId();
+          addMessageToSession(streamSessionId, {
+            id: newId,
+            role: 'assistant',
+            content: text,
+            timestamp: Date.now(),
+          });
+          activeMsgId = newId;
+          lastAddedRole = 'assistant';
+        } else {
+          updateMessageById(streamSessionId, activeMsgId, msg => ({
+            ...msg,
+            content: msg.content + text,
+          }));
+        }
+      }
+      rafId = null;
+    };
+
+    const cancelPendingFlush = () => {
+      if (rafId !== null) {
+        cancelAnimationFrame(rafId);
+        rafId = null;
+      }
+    };
+
+    try {
+    while (true) {
+      const { done, value } = await reader.read();
+      if (done) break;
+      // Use the StreamChunk union for type narrowing instead of unsafe casts
+      const chunk = value as StreamChunk;
+      switch (chunk.type) {
+        case 'text':
+        case 'text-delta': {
+          const typedChunk = chunk as TextDeltaChunk;
+          const text = typedChunk.text ?? typedChunk.textDelta;
+          if (text) {
+            pendingText += text;
+            if (rafId === null) {
+              rafId = requestAnimationFrame(flushText);
+            }
+          }
+          break;
+        }
+        case 'reasoning':
+        case 'reasoning-start':
+        case 'reasoning-delta': {
+          cancelPendingFlush();
+          flushText();
+          const typedChunk = chunk as ReasoningChunk;
+          const rText = typedChunk.text;
+          if (rText) {
+            if (lastAddedRole === 'tool') {
+              const newId = generateId();
+              addMessageToSession(streamSessionId, {
+                id: newId,
+                role: 'assistant',
+                content: '',
+                thinking: rText,
+                timestamp: Date.now(),
+              });
+              activeMsgId = newId;
+              lastAddedRole = 'assistant';
+            } else {
+              updateMessageById(streamSessionId, activeMsgId, msg => ({
+                ...msg,
+                thinking: (msg.thinking || '') + rText,
+              }));
+            }
+          }
+          break;
+        }
+        case 'reasoning-end':
+        case 'text-start':
+        case 'text-end':
+        case 'start':
+        case 'finish':
+        case 'start-step':
+        case 'finish-step':
+          break;
+        case 'tool-call': {
+          cancelPendingFlush();
+          flushText();
+          const typedChunk = chunk as ToolCallChunk;
+          updateMessageById(streamSessionId, activeMsgId, msg => ({
+            ...msg,
+            toolCalls: [...(msg.toolCalls || []), {
+              id: typedChunk.toolCallId,
+              name: typedChunk.toolName,
+              arguments: (typedChunk.input ?? typedChunk.args) as Record<string, unknown>,
+            }],
+            executionStatus: 'running',
+            statusText: undefined,
+          }));
+          break;
+        }
+        case 'tool-result': {
+          cancelPendingFlush();
+          flushText();
+          const typedChunk = chunk as ToolResultChunk;
+          // Mark the assistant message's tool execution as completed
+          updateMessageById(streamSessionId, activeMsgId, msg =>
+            msg.role === 'assistant' && msg.executionStatus === 'running'
+              ? { ...msg, executionStatus: 'completed', statusText: undefined } : msg,
+          );
+          const toolOutput = typedChunk.output ?? typedChunk.result;
+          const toolError = isToolResultError(toolOutput);
+          addMessageToSession(streamSessionId, {
+            id: generateId(),
+            role: 'tool',
+            content: '',
+            toolResults: [{
+              toolCallId: typedChunk.toolCallId,
+              content: typeof toolOutput === 'string'
+                ? toolOutput
+                : JSON.stringify(toolOutput),
+              isError: toolError,
+            }],
+            timestamp: Date.now(),
+            executionStatus: 'completed',
+          });
+          lastAddedRole = 'tool';
+          break;
+        }
+        // tool-approval-request is no longer handled here — approval is now
+        // inside the tool's execute function via the approvalGate module.
+        // The SDK may still emit this chunk type but we simply ignore it.
+        case 'error': {
+          cancelPendingFlush();
+          flushText();
+          const typedChunk = chunk as ErrorChunk;
+          updateMessageById(streamSessionId, activeMsgId, msg => ({
+            ...msg,
+            statusText: '',
+            executionStatus: msg.executionStatus === 'running' ? 'failed' : msg.executionStatus,
+          }));
+          addMessageToSession(streamSessionId, {
+            id: generateId(),
+            role: 'assistant',
+            content: '',
+            errorInfo: classifyError(
+              typedChunk.error instanceof Error ? typedChunk.error.message
+                : typeof typedChunk.error === 'string' ? typedChunk.error
+                : (() => { try { return JSON.stringify(typedChunk.error) ?? 'Unknown error'; } catch { return 'Unknown error'; } })(),
+            ),
+            timestamp: Date.now(),
+          });
+          break;
+        }
+        default:
+          break;
+      }
+    }
+    } finally {
+      cancelPendingFlush();
+      flushText();
+      reader.releaseLock();
+    }
+    return;
+  }, [maxIterations, addMessageToSession, updateMessageById]);
+
+  // -------------------------------------------------------------------
+  // sendToExternalAgent
+  // -------------------------------------------------------------------
+
+  const sendToExternalAgent = useCallback(async (
+    sessionId: string,
+    trimmed: string,
+    agentConfig: ExternalAgentConfig,
+    abortController: AbortController,
+    attachedImages: Array<{ base64Data: string; mediaType: string; filename?: string }>,
+    context: SendToExternalContext,
+  ) => {
+    const bridge = getNetcattyBridge();
+
+    if (agentConfig.acpCommand && bridge) {
+      const requestId = `acp_${Date.now()}_${Math.random().toString(36).slice(2, 6)}`;
+
+      // Push terminal session metadata to MCP bridge
+      if (bridge?.aiMcpUpdateSessions) {
+        await bridge.aiMcpUpdateSessions(context.terminalSessions, sessionId);
+      }
+
+      // Pass only the provider ID — the main process resolves and decrypts the API key itself,
+      // avoiding plaintext key transit across the IPC boundary.
+      const openaiProvider = context.providers.find(p => p.providerId === 'openai' && p.enabled && p.apiKey);
+      const agentProviderId = openaiProvider?.id;
+
+      // Mutable flag: set after tool-result, cleared when new assistant msg is created
+      let needsNewAssistantMsg = false;
+      const maybeCreateAssistantMsg = () => {
+        if (needsNewAssistantMsg) {
+          needsNewAssistantMsg = false;
+          addMessageToSession(sessionId, {
+            id: generateId(), role: 'assistant', content: '', timestamp: Date.now(),
+            model: agentConfig.name || 'external',
+          });
+        }
+      };
+
+      await runAcpAgentTurn(
+        bridge,
+        requestId,
+        sessionId,
+        agentConfig,
+        trimmed,
+        {
+          onTextDelta: (text: string) => {
+            maybeCreateAssistantMsg();
+            updateLastMessage(sessionId, msg => ({
+              ...msg,
+              content: msg.content + text,
+              statusText: undefined,
+              thinkingDurationMs: msg.thinking && !msg.thinkingDurationMs
+                ? Date.now() - msg.timestamp : msg.thinkingDurationMs,
+            }));
+          },
+          onThinkingDelta: (text: string) => {
+            maybeCreateAssistantMsg();
+            updateLastMessage(sessionId, msg => ({
+              ...msg, thinking: (msg.thinking || '') + text,
+            }));
+          },
+          onThinkingDone: () => {
+            updateLastMessage(sessionId, msg => ({
+              ...msg, thinkingDurationMs: msg.thinkingDurationMs || (Date.now() - msg.timestamp),
+            }));
+          },
+          onToolCall: (toolName: string, args: Record<string, unknown>, toolCallId?: string) => {
+            maybeCreateAssistantMsg();
+            updateLastMessage(sessionId, msg => ({
+              ...msg,
+              toolCalls: [...(msg.toolCalls || []), { id: toolCallId || `tc_${Date.now()}`, name: toolName, arguments: args }],
+              executionStatus: 'running',
+              statusText: undefined,
+            }));
+          },
+          onToolResult: (toolCallId: string, result: string, toolName?: string) => {
+            updateLastMessage(sessionId, msg => {
+              if (msg.role !== 'assistant' || msg.executionStatus !== 'running') return msg;
+              // Only patch tool call name if the existing name is missing/generic
+              // (don't overwrite a good name from onToolCall with a wrapper name from tool-result)
+              const updatedToolCalls = toolName && !toolName.includes('acp_provider_agent_dynamic_tool') && msg.toolCalls
+                ? msg.toolCalls.map(tc => tc.id === toolCallId && !tc.name ? { ...tc, name: toolName } : tc)
+                : msg.toolCalls;
+              return { ...msg, toolCalls: updatedToolCalls, executionStatus: 'completed', statusText: undefined };
+            });
+            const toolError = isToolResultError(result);
+            addMessageToSession(sessionId, {
+              id: generateId(), role: 'tool', content: '',
+              toolResults: [{ toolCallId, content: result, isError: toolError }],
+              timestamp: Date.now(), executionStatus: 'completed',
+            });
+            needsNewAssistantMsg = true;
+          },
+          onStatus: (message: string) => {
+            maybeCreateAssistantMsg();
+            updateLastMessage(sessionId, msg => ({ ...msg, statusText: message }));
+          },
+          onSessionId: (externalSessionId: string) => {
+            context.updateExternalSessionId?.(sessionId, externalSessionId);
+          },
+          onError: (error: string) => {
+            reportStreamError(sessionId, abortController.signal, error);
+            setStreamingForScope(sessionId, false);
+          },
+          onDone: () => {},
+        },
+        abortController.signal,
+        agentProviderId,
+        context.selectedAgentModel,
+        context.existingSessionId,
+        context.historyMessages,
+        attachedImages.length > 0 ? attachedImages : undefined,
+      );
+    } else {
+      // Fallback: spawn as raw process
+      await runExternalAgentTurn(
+        agentConfig,
+        trimmed,
+        {
+          onTextDelta: (text: string) => {
+            updateLastMessage(sessionId, msg => ({ ...msg, content: msg.content + text }));
+          },
+          onError: (error: string) => {
+            reportStreamError(sessionId, abortController.signal, error);
+            setStreamingForScope(sessionId, false);
+          },
+          onDone: () => {},
+        },
+        bridge as unknown as Parameters<typeof runExternalAgentTurn>[3],
+        abortController.signal,
+      );
+    }
+  }, [
+    addMessageToSession, updateLastMessage, setStreamingForScope, reportStreamError,
+  ]);
+
+  // -------------------------------------------------------------------
+  // sendToCattyAgent
+  // -------------------------------------------------------------------
+
+  const sendToCattyAgent = useCallback(async (
+    sessionId: string,
+    sendScopeKey: string,
+    trimmed: string,
+    abortController: AbortController,
+    currentSession: AISession | undefined,
+    assistantMsgId: string,
+    context: SendToCattyContext,
+    attachments?: ChatMessageAttachment[],
+  ) => {
+    const bridge = getNetcattyBridge();
+    const getExecutorContext = context.getExecutorContext ?? (() => ({
+      sessions: context.terminalSessions,
+      workspaceId: context.scopeType === 'workspace' ? context.scopeTargetId : undefined,
+      workspaceName: context.scopeType === 'workspace' ? context.scopeLabel : undefined,
+    }));
+    const tools = createCattyTools(
+      bridge,
+      getExecutorContext,
+      context.commandBlocklist,
+      context.globalPermissionMode,
+      context.webSearchConfig ?? undefined,
+      sessionId,
+    );
+
+    const systemPrompt = buildSystemPrompt({
+      scopeType: context.scopeType, scopeLabel: context.scopeLabel,
+      hosts: context.terminalSessions.map(s => ({
+        sessionId: s.sessionId, hostname: s.hostname, label: s.label,
+        os: s.os,
+        username: s.username,
+        protocol: s.protocol,
+        shellType: s.shellType,
+        deviceType: s.deviceType,
+        connected: s.connected,
+      })),
+      permissionMode: context.globalPermissionMode,
+      webSearchEnabled: isWebSearchReady(context.webSearchConfig),
+    });
+
+    // Guard: activeProvider must exist for Catty agent path
+    if (!context.activeProvider) {
+      reportStreamError(sessionId, abortController.signal, 'No AI provider configured. Please configure a provider in Settings → AI.');
+      return;
+    }
+
+    // Create model with placeholder API key — the main process injects the real
+    // decrypted key when the HTTP request is proxied through IPC, so plaintext
+    // keys never transit the renderer ↔ main IPC boundary.
+    let model;
+    try {
+      model = createModelFromConfig({
+        ...context.activeProvider,
+        defaultModel: context.activeModelId || context.activeProvider.defaultModel || '',
+      });
+    } catch (e) {
+      console.error('[Catty] Model creation failed:', e);
+      reportStreamError(sessionId, abortController.signal, `Model creation failed: ${e instanceof Error ? e.message : String(e)}`);
+      return;
+    }
+
+    try {
+      // Issue #5: Build SDK messages including tool-call and tool-result messages
+      // so the LLM maintains full conversation context
+      const allMessages = currentSession?.messages ?? [];
+
+      // Collect all tool call IDs that have a corresponding tool result,
+      // so we can skip orphaned tool calls (e.g. from user stopping mid-execution)
+      const resolvedToolCallIds = new Set<string>();
+      for (const m of allMessages) {
+        if (m.role === 'tool' && m.toolResults) {
+          for (const tr of m.toolResults) resolvedToolCallIds.add(tr.toolCallId);
+        }
+      }
+
+      const findToolName = (toolCallId: string): string => {
+        for (const prev of allMessages) {
+          if (prev.role === 'assistant' && prev.toolCalls) {
+            const tc = prev.toolCalls.find(t => t.id === toolCallId);
+            if (tc) return tc.name;
+          }
+        }
+        return 'unknown';
+      };
+
+      const sdkMessages: Array<ModelMessage> = [];
+      for (const m of allMessages) {
+        if (m.role === 'user') {
+          // Build multimodal content when attachments are present (fallback to legacy `images` field)
+          const messageAttachments = m.attachments ?? m.images;
+          if (messageAttachments?.length) {
+            const parts: Array<{ type: 'text'; text: string } | { type: 'image'; image: string; mediaType?: string } | { type: 'file'; data: string; mediaType: string; filename?: string }> = [];
+            parts.push({ type: 'text', text: m.content });
+            for (const att of messageAttachments) {
+              if (att.mediaType.startsWith('image/')) {
+                parts.push({ type: 'image', image: att.base64Data, mediaType: att.mediaType });
+              } else {
+                parts.push({ type: 'file', data: att.base64Data, mediaType: att.mediaType, filename: att.filename });
+              }
+            }
+            sdkMessages.push({ role: 'user', content: parts });
+          } else {
+            sdkMessages.push({ role: 'user', content: m.content });
+          }
+        } else if (m.role === 'assistant') {
+          if (m.toolCalls?.length) {
+            // Only include tool calls that have matching results
+            const resolvedCalls = m.toolCalls.filter(tc => resolvedToolCallIds.has(tc.id));
+            const contentParts: Array<
+              { type: 'text'; text: string } |
+              { type: 'tool-call'; toolCallId: string; toolName: string; input: unknown }
+            > = [];
+            if (m.content) {
+              contentParts.push({ type: 'text' as const, text: m.content });
+            }
+            for (const tc of resolvedCalls) {
+              contentParts.push({
+                type: 'tool-call' as const,
+                toolCallId: tc.id,
+                toolName: tc.name,
+                input: tc.arguments ?? {},
+              });
+            }
+            // If all tool calls were orphaned, just include the text content
+            if (contentParts.length > 0) {
+              sdkMessages.push({ role: 'assistant', content: contentParts.length === 1 && contentParts[0].type === 'text' ? (contentParts[0] as { type: 'text'; text: string }).text : contentParts });
+            }
+          } else if (m.content) {
+            sdkMessages.push({ role: 'assistant', content: m.content });
+          }
+        } else if (m.role === 'tool' && m.toolResults?.length) {
+          sdkMessages.push({
+            role: 'tool',
+            content: m.toolResults.map(tr => ({
+              type: 'tool-result' as const,
+              toolCallId: tr.toolCallId,
+              toolName: findToolName(tr.toolCallId),
+              output: { type: 'text' as const, value: tr.content },
+            })),
+          });
+        }
+      }
+      // Build the current user message — include attachments as multimodal content
+      if (attachments?.length) {
+        const parts: Array<{ type: 'text'; text: string } | { type: 'image'; image: string; mediaType?: string } | { type: 'file'; data: string; mediaType: string; filename?: string }> = [];
+        parts.push({ type: 'text', text: trimmed });
+        for (const att of attachments) {
+          if (att.mediaType.startsWith('image/')) {
+            parts.push({ type: 'image', image: att.base64Data, mediaType: att.mediaType });
+          } else {
+            parts.push({ type: 'file', data: att.base64Data, mediaType: att.mediaType, filename: att.filename });
+          }
+        }
+        sdkMessages.push({ role: 'user', content: parts });
+      } else {
+        sdkMessages.push({ role: 'user', content: trimmed });
+      }
+
+      await processCattyStream(sessionId, model, systemPrompt, tools, sdkMessages, abortController.signal, assistantMsgId, context.activeProvider?.advancedParams);
+    } catch (err) {
+      console.error('[Catty] streamText error:', err);
+      reportStreamError(sessionId, abortController.signal, err);
+    } finally {
+      // Clear any lingering statusText when the stream finishes
+      updateLastMessage(sessionId, msg => msg.statusText ? { ...msg, statusText: '' } : msg);
+      setStreamingForScope(sessionId, false);
+      abortControllersRef.current.delete(sessionId);
+      context.autoTitleSession(sessionId, trimmed);
+    }
+  }, [
+    processCattyStream, reportStreamError, setStreamingForScope,
+    updateLastMessage,
+  ]);
+
+  return {
+    streamingSessionIds,
+    setStreamingForScope,
+    abortControllersRef,
+    processCattyStream,
+    sendToCattyAgent,
+    sendToExternalAgent,
+    reportStreamError,
+  };
+}

components/ai/hooks/useConversationExport.ts

@@ -0,0 +1,76 @@
+/**
+ * useConversationExport — Encapsulates conversation export logic for the AI chat panel.
+ *
+ * Handles:
+ * - Export in markdown, JSON, and plain text formats
+ * - Object URL lifecycle management (creation, revocation, cleanup on unmount)
+ */
+
+import React, { useCallback, useEffect, useRef } from 'react';
+import type { AISession } from '../../../infrastructure/ai/types';
+import { exportAsMarkdown, exportAsJSON, exportAsPlainText, getExportFilename } from '../../../infrastructure/ai/conversationExport';
+
+// -------------------------------------------------------------------
+// Hook return type
+// -------------------------------------------------------------------
+
+export interface UseConversationExportReturn {
+  /** Trigger a download of the active session in the given format. */
+  handleExport: (format: 'md' | 'json' | 'txt') => void;
+  /** Ref to active object URLs for cleanup on unmount (exposed for the parent cleanup effect). */
+  activeObjectUrlsRef: React.MutableRefObject<Set<string>>;
+}
+
+// -------------------------------------------------------------------
+// Hook implementation
+// -------------------------------------------------------------------
+
+export function useConversationExport(
+  activeSession: AISession | null,
+): UseConversationExportReturn {
+  // Ref to track active object URLs for cleanup on unmount (Issue #19)
+  const activeObjectUrlsRef = useRef<Set<string>>(new Set());
+
+  // Clean up object URLs on unmount
+  useEffect(() => {
+    const urls = activeObjectUrlsRef.current;
+    return () => {
+      urls.forEach(url => URL.revokeObjectURL(url));
+      urls.clear();
+    };
+  }, []);
+
+  const handleExport = useCallback((format: 'md' | 'json' | 'txt') => {
+    if (!activeSession) return;
+    let content: string;
+    switch (format) {
+      case 'md': content = exportAsMarkdown(activeSession); break;
+      case 'json': content = exportAsJSON(activeSession); break;
+      case 'txt': content = exportAsPlainText(activeSession); break;
+    }
+    const filename = getExportFilename(activeSession, format);
+    // Create a download blob
+    const blob = new Blob([content], { type: 'text/plain;charset=utf-8' });
+    const url = URL.createObjectURL(blob);
+    // Track URL for cleanup on unmount (Issue #19)
+    activeObjectUrlsRef.current.add(url);
+    const a = document.createElement('a');
+    a.href = url;
+    a.download = filename;
+    document.body.appendChild(a);
+    a.click();
+    document.body.removeChild(a);
+    // Revoke after a generous delay to ensure download completes, then remove from tracking set
+    const revokeTimeout = setTimeout(() => {
+      URL.revokeObjectURL(url);
+      activeObjectUrlsRef.current.delete(url);
+    }, 60_000); // 60 seconds to be safe for large files
+    // If component unmounts before timeout, cleanup effect will revoke it
+    void revokeTimeout; // suppress unused warning
+  }, [activeSession]);
+
+  return {
+    handleExport,
+    activeObjectUrlsRef,
+  };
+}

components/settings/settings-ui.tsx

@@ -34,13 +34,21 @@ export const Toggle: React.FC<ToggleProps> = ({ checked, onChange, disabled }) =
 
 interface SelectProps {
   value: string;
-  options: { value: string; label: string }[];
+  options: { value: string; label: string; icon?: React.ReactNode }[];
   onChange: (value: string) => void;
   className?: string;
   disabled?: boolean;
+  placeholder?: string;
 }
 
-export const Select: React.FC<SelectProps> = ({ value, options, onChange, className, disabled }) => {
+export const Select: React.FC<SelectProps> = ({
+  value,
+  options,
+  onChange,
+  className,
+  disabled,
+  placeholder,
+}) => {
   const selectedOption = options.find((opt) => opt.value === value);
   return (
     <SelectPrimitive.Root value={value} onValueChange={onChange} disabled={disabled}>
@@ -50,7 +58,12 @@ export const Select: React.FC<SelectProps> = ({ value, options, onChange, classN
           className,
         )}
       >
-        <SelectPrimitive.Value>{selectedOption?.label ?? value}</SelectPrimitive.Value>
+        <SelectPrimitive.Value placeholder={placeholder}>
+          <span className="flex items-center gap-2">
+            {selectedOption?.icon}
+            {selectedOption?.label}
+          </span>
+        </SelectPrimitive.Value>
         <SelectPrimitive.Icon asChild>
           <ChevronDown className="ml-2 h-4 w-4 opacity-50" />
         </SelectPrimitive.Icon>
@@ -76,7 +89,12 @@ export const Select: React.FC<SelectProps> = ({ value, options, onChange, classN
                     <Check className="h-4 w-4" />
                   </SelectPrimitive.ItemIndicator>
                 </span>
-                <SelectPrimitive.ItemText>{opt.label}</SelectPrimitive.ItemText>
+                <SelectPrimitive.ItemText>
+                  <span className="flex items-center gap-2">
+                    {opt.icon}
+                    {opt.label}
+                  </span>
+                </SelectPrimitive.ItemText>
               </SelectPrimitive.Item>
             ))}
           </SelectPrimitive.Viewport>
@@ -120,4 +138,3 @@ export const SettingsTabContent: React.FC<{
     </ScrollArea>
   </TabsContent>
 );
-

components/settings/tabs/SettingsAITab.tsx

@@ -0,0 +1,540 @@
+/**
+ * Settings AI Tab - AI provider configuration, agent CLI detection, and safety settings
+ *
+ * Sub-components live in ./ai/ directory:
+ *   - ProviderCard, ProviderConfigForm, AddProviderDropdown
+ *   - ModelSelector, ProviderIconBadge
+ *   - CodexConnectionCard, ClaudeCodeCard
+ *   - SafetySettings
+ */
+import { Bot, Globe } from "lucide-react";
+import React, { useCallback, useEffect, useMemo, useState } from "react";
+import type {
+  AIPermissionMode,
+  AIProviderId,
+  ExternalAgentConfig,
+  ProviderConfig,
+  WebSearchConfig,
+} from "../../../infrastructure/ai/types";
+import { PROVIDER_PRESETS } from "../../../infrastructure/ai/types";
+import { useAgentDiscovery } from "../../../application/state/useAgentDiscovery";
+import { useI18n } from "../../../application/i18n/I18nProvider";
+import { TabsContent } from "../../ui/tabs";
+import { Select, SettingRow } from "../settings-ui";
+import { AgentIconBadge } from "../../ai/AgentIconBadge";
+
+import type {
+  AgentPathInfo,
+  CodexIntegrationStatus,
+  CodexLoginSession,
+} from "./ai/types";
+import {
+  AGENT_DEFAULTS,
+  getBridge,
+  normalizeCodexBridgeError,
+} from "./ai/types";
+import { ProviderIconBadge } from "./ai/ProviderIconBadge";
+import { ProviderCard } from "./ai/ProviderCard";
+import { AddProviderDropdown } from "./ai/AddProviderDropdown";
+import { CodexConnectionCard } from "./ai/CodexConnectionCard";
+import { ClaudeCodeCard } from "./ai/ClaudeCodeCard";
+import { SafetySettings } from "./ai/SafetySettings";
+import { WebSearchSettings } from "./ai/WebSearchSettings";
+
+// ---------------------------------------------------------------------------
+// Props
+// ---------------------------------------------------------------------------
+
+interface SettingsAITabProps {
+  providers: ProviderConfig[];
+  addProvider: (provider: ProviderConfig) => void;
+  updateProvider: (id: string, updates: Partial<ProviderConfig>) => void;
+  removeProvider: (id: string) => void;
+  activeProviderId: string;
+  setActiveProviderId: (id: string) => void;
+  activeModelId: string;
+  setActiveModelId: (id: string) => void;
+  globalPermissionMode: AIPermissionMode;
+  setGlobalPermissionMode: (mode: AIPermissionMode) => void;
+  externalAgents: ExternalAgentConfig[];
+  setExternalAgents: (value: ExternalAgentConfig[] | ((prev: ExternalAgentConfig[]) => ExternalAgentConfig[])) => void;
+  defaultAgentId: string;
+  setDefaultAgentId: (id: string) => void;
+  commandBlocklist: string[];
+  setCommandBlocklist: (value: string[]) => void;
+  commandTimeout: number;
+  setCommandTimeout: (value: number) => void;
+  maxIterations: number;
+  setMaxIterations: (value: number) => void;
+  webSearchConfig: WebSearchConfig | null;
+  setWebSearchConfig: (config: WebSearchConfig | null) => void;
+}
+
+// ---------------------------------------------------------------------------
+// Main Tab Component
+// ---------------------------------------------------------------------------
+
+const SettingsAITab: React.FC<SettingsAITabProps> = ({
+  providers,
+  addProvider,
+  updateProvider,
+  removeProvider,
+  activeProviderId,
+  setActiveProviderId,
+  activeModelId: _activeModelId,
+  setActiveModelId,
+  globalPermissionMode,
+  setGlobalPermissionMode,
+  externalAgents,
+  setExternalAgents,
+  defaultAgentId,
+  setDefaultAgentId,
+  commandBlocklist,
+  setCommandBlocklist,
+  commandTimeout,
+  setCommandTimeout,
+  maxIterations,
+  setMaxIterations,
+  webSearchConfig,
+  setWebSearchConfig,
+}) => {
+  const { t } = useI18n();
+  const [editingProviderId, setEditingProviderId] = useState<string | null>(null);
+  const [codexIntegration, setCodexIntegration] = useState<CodexIntegrationStatus | null>(null);
+  const [codexLoginSession, setCodexLoginSession] = useState<CodexLoginSession | null>(null);
+  const [isCodexLoading, setIsCodexLoading] = useState(false);
+  const [codexError, setCodexError] = useState<string | null>(null);
+
+  // Path detection state
+  const [codexPathInfo, setCodexPathInfo] = useState<AgentPathInfo | null>(null);
+  const [codexCustomPath, setCodexCustomPath] = useState("");
+  const [isResolvingCodex, setIsResolvingCodex] = useState(false);
+
+  const [claudePathInfo, setClaudePathInfo] = useState<AgentPathInfo | null>(null);
+  const [claudeCustomPath, setClaudeCustomPath] = useState("");
+  const [isResolvingClaude, setIsResolvingClaude] = useState(false);
+
+  const {
+    discoveredAgents,
+    isDiscovering,
+    enableAgent,
+  } = useAgentDiscovery(externalAgents, setExternalAgents);
+
+  // Derive path info from discovery results
+  useEffect(() => {
+    if (isDiscovering) return;
+
+    const codex = discoveredAgents.find((a) => a.command === "codex");
+    setCodexPathInfo(
+      codex
+        ? { path: codex.path, version: codex.version, available: true }
+        : { path: null, version: null, available: false },
+    );
+
+    const claude = discoveredAgents.find((a) => a.command === "claude");
+    setClaudePathInfo(
+      claude
+        ? { path: claude.path, version: claude.version, available: true }
+        : { path: null, version: null, available: false },
+    );
+  }, [isDiscovering, discoveredAgents]);
+
+  // Auto-register discovered agents in externalAgents
+  useEffect(() => {
+    if (isDiscovering || discoveredAgents.length === 0) return;
+
+    setExternalAgents((prev) => {
+      const agentsToRegister: ExternalAgentConfig[] = [];
+
+      for (const da of discoveredAgents) {
+        if (da.command !== "codex" && da.command !== "claude") continue;
+        const agentId = `discovered_${da.command}`;
+        if (prev.some((ea) => ea.id === agentId)) continue;
+        agentsToRegister.push(enableAgent(da));
+      }
+
+      return agentsToRegister.length > 0 ? [...prev, ...agentsToRegister] : prev;
+    });
+  }, [isDiscovering, discoveredAgents, enableAgent, setExternalAgents]);
+
+  // Validate a custom path for an agent
+  const handleCheckCustomPath = useCallback(async (agentKey: "codex" | "claude") => {
+    const bridge = getBridge();
+    if (!bridge?.aiResolveCli) return;
+
+    const customPath = agentKey === "codex" ? codexCustomPath : claudeCustomPath;
+    const setInfo = agentKey === "codex" ? setCodexPathInfo : setClaudePathInfo;
+    const setResolving = agentKey === "codex" ? setIsResolvingCodex : setIsResolvingClaude;
+
+    setResolving(true);
+    try {
+      const result = await bridge.aiResolveCli({
+        command: agentKey,
+        customPath: customPath.trim(),
+      });
+      setInfo(result);
+
+      // Register/update in externalAgents if valid
+      if (result.available && result.path) {
+        const agentId = `discovered_${agentKey}`;
+        const defaults = AGENT_DEFAULTS[agentKey];
+        setExternalAgents((prev) => {
+          const idx = prev.findIndex((a) => a.id === agentId);
+          const config: ExternalAgentConfig = {
+            id: agentId,
+            command: result.path!,
+            enabled: true,
+            ...defaults,
+          };
+          if (idx >= 0) {
+            const updated = [...prev];
+            updated[idx] = { ...updated[idx], command: result.path! };
+            return updated;
+          }
+          return [...prev, config];
+        });
+      }
+    } catch (err) {
+      console.error("Path resolution failed:", err);
+    } finally {
+      setResolving(false);
+    }
+  }, [codexCustomPath, claudeCustomPath, setExternalAgents]);
+
+  // Add a new provider from preset
+  const handleAddProvider = useCallback(
+    (providerId: AIProviderId) => {
+      const preset = PROVIDER_PRESETS[providerId];
+      const id = `provider_${Date.now()}_${Math.random().toString(36).slice(2, 6)}`;
+      addProvider({
+        id,
+        providerId,
+        name: preset.name,
+        baseURL: preset.defaultBaseURL,
+        enabled: false,
+      });
+      // Auto-open config form
+      setEditingProviderId(id);
+    },
+    [addProvider],
+  );
+
+  // Remove provider with confirmation
+  const handleRemoveProvider = useCallback(
+    (id: string) => {
+      const provider = providers.find((p) => p.id === id);
+      const name = provider?.name || id;
+      const ok = window.confirm(
+        t('confirm.removeProvider', { name }),
+      );
+      if (!ok) return;
+      removeProvider(id);
+      if (editingProviderId === id) {
+        setEditingProviderId(null);
+      }
+    },
+    [removeProvider, editingProviderId, providers, t],
+  );
+
+  // Agent options for default agent
+  const agentOptions = useMemo(() => [
+    { value: "catty", label: t('ai.defaultAgent.catty'), icon: <AgentIconBadge agent={{ id: "catty", type: "builtin" }} size="xs" variant="plain" /> },
+    ...externalAgents
+      .filter((a) => a.enabled)
+      .map((a) => ({ value: a.id, label: a.name, icon: <AgentIconBadge agent={a} size="xs" variant="plain" /> })),
+  ], [externalAgents, t]);
+
+  const hasOpenAiProviderKey = providers.some(
+    (provider) => provider.providerId === "openai" && provider.enabled && !!provider.apiKey,
+  );
+
+  const refreshCodexIntegration = useCallback(async () => {
+    const bridge = getBridge();
+    if (!bridge?.aiCodexGetIntegration) return;
+
+    setIsCodexLoading(true);
+    setCodexError(null);
+    try {
+      const integration = await bridge.aiCodexGetIntegration();
+      setCodexIntegration(integration);
+    } catch (err) {
+      setCodexError(normalizeCodexBridgeError(err));
+    } finally {
+      setIsCodexLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    void refreshCodexIntegration();
+  }, [refreshCodexIntegration]);
+
+  useEffect(() => {
+    if (!codexLoginSession || codexLoginSession.state !== "running") {
+      return;
+    }
+
+    const bridge = getBridge();
+    if (!bridge?.aiCodexGetLoginSession) {
+      return;
+    }
+
+    let cancelled = false;
+    const intervalId = window.setInterval(() => {
+      void bridge.aiCodexGetLoginSession?.(codexLoginSession.sessionId).then((result) => {
+        if (cancelled || !result?.ok || !result.session) return;
+
+        setCodexLoginSession(result.session);
+        if (result.session.state !== "running") {
+          if (result.session.state === "success") {
+            void refreshCodexIntegration();
+          }
+        }
+      }).catch((err) => {
+        if (!cancelled) {
+          setCodexError(normalizeCodexBridgeError(err));
+        }
+      });
+    }, 1000);
+
+    return () => {
+      cancelled = true;
+      window.clearInterval(intervalId);
+    };
+  }, [codexLoginSession, refreshCodexIntegration]);
+
+  const handleStartCodexLogin = useCallback(async () => {
+    const bridge = getBridge();
+    if (!bridge?.aiCodexStartLogin) return;
+
+    setCodexError(null);
+    setIsCodexLoading(true);
+    try {
+      const result = await bridge.aiCodexStartLogin();
+      if (!result.ok || !result.session) {
+        throw new Error(result.error || "Failed to start Codex login");
+      }
+      setCodexLoginSession(result.session);
+    } catch (err) {
+      setCodexError(normalizeCodexBridgeError(err));
+    } finally {
+      setIsCodexLoading(false);
+    }
+  }, []);
+
+  const handleCancelCodexLogin = useCallback(async () => {
+    const bridge = getBridge();
+    if (!bridge?.aiCodexCancelLogin || !codexLoginSession) return;
+
+    setCodexError(null);
+    try {
+      const result = await bridge.aiCodexCancelLogin(codexLoginSession.sessionId);
+      if (result.session) {
+        setCodexLoginSession(result.session);
+      }
+    } catch (err) {
+      setCodexError(normalizeCodexBridgeError(err));
+    }
+  }, [codexLoginSession]);
+
+  const handleOpenCodexLoginUrl = useCallback(() => {
+    const bridge = getBridge();
+    const url = codexLoginSession?.url;
+    if (!bridge?.openExternal || !url) return;
+    // Only allow https:// URLs to prevent opening arbitrary protocols
+    if (!url.startsWith("https://")) return;
+    void bridge.openExternal(url);
+  }, [codexLoginSession]);
+
+  const handleCodexLogout = useCallback(async () => {
+    const bridge = getBridge();
+    if (!bridge?.aiCodexLogout) return;
+
+    setCodexError(null);
+    setIsCodexLoading(true);
+    try {
+      const result = await bridge.aiCodexLogout();
+      if (!result.ok) {
+        throw new Error(result.error || "Failed to log out from Codex");
+      }
+      setCodexLoginSession(null);
+      await refreshCodexIntegration();
+    } catch (err) {
+      setCodexError(normalizeCodexBridgeError(err));
+    } finally {
+      setIsCodexLoading(false);
+    }
+  }, [refreshCodexIntegration]);
+
+  return (
+    <TabsContent
+      value="ai"
+      className="data-[state=inactive]:hidden h-full flex flex-col"
+    >
+      <div className="flex-1 overflow-y-auto overflow-x-hidden px-8 py-6">
+        <div className="max-w-2xl space-y-8">
+          {/* Header */}
+          <div>
+            <h2 className="text-xl font-semibold">{t('ai.title')}</h2>
+            <p className="text-sm text-muted-foreground mt-1">
+              {t('ai.description')}
+            </p>
+          </div>
+
+          {/* -- Providers Section -- */}
+          <div className="space-y-4">
+            <div className="flex items-center justify-between">
+              <div className="flex items-center gap-2">
+                <Globe size={18} className="text-muted-foreground" />
+                <h3 className="text-base font-medium">{t('ai.providers')}</h3>
+              </div>
+              <AddProviderDropdown onAdd={handleAddProvider} />
+            </div>
+
+            {providers.length === 0 ? (
+              <div className="rounded-lg border border-dashed border-border/60 p-6 text-center">
+                <Bot size={24} className="mx-auto text-muted-foreground mb-2" />
+                <p className="text-sm text-muted-foreground">
+                  {t('ai.providers.empty')}
+                </p>
+              </div>
+            ) : (
+              <div className="space-y-2">
+                {providers.map((provider) => (
+                  <ProviderCard
+                    key={provider.id}
+                    provider={provider}
+                    isActive={provider.id === activeProviderId}
+                    onToggleEnabled={(enabled) => {
+                      if (enabled) {
+                        // Activate this provider, deactivate all others
+                        setActiveProviderId(provider.id);
+                        if (provider.defaultModel) {
+                          setActiveModelId(provider.defaultModel);
+                        }
+                        for (const p of providers) {
+                          if (p.id === provider.id) {
+                            if (!p.enabled) updateProvider(p.id, { enabled: true });
+                          } else {
+                            if (p.enabled) updateProvider(p.id, { enabled: false });
+                          }
+                        }
+                      } else {
+                        // Deactivate this provider
+                        if (activeProviderId === provider.id) {
+                          setActiveProviderId("");
+                          setActiveModelId("");
+                        }
+                        updateProvider(provider.id, { enabled: false });
+                      }
+                    }}
+                    onEdit={() =>
+                      setEditingProviderId(
+                        editingProviderId === provider.id ? null : provider.id,
+                      )
+                    }
+                    onRemove={() => handleRemoveProvider(provider.id)}
+                    onUpdate={(updates) => {
+                      updateProvider(provider.id, updates);
+                      // If this is the active provider and model changed, update activeModelId
+                      if (provider.id === activeProviderId && updates.defaultModel !== undefined) {
+                        setActiveModelId(updates.defaultModel || "");
+                      }
+                    }}
+                    isEditing={editingProviderId === provider.id}
+                    onCancelEdit={() => setEditingProviderId(null)}
+                  />
+                ))}
+              </div>
+            )}
+          </div>
+
+          {/* -- Codex Section -- */}
+          <div className="space-y-4">
+            <div className="flex items-center gap-2">
+              <ProviderIconBadge providerId="openai" size="sm" />
+              <h3 className="text-base font-medium">{t('ai.codex')}</h3>
+            </div>
+
+            <CodexConnectionCard
+              pathInfo={codexPathInfo}
+              isResolvingPath={isDiscovering || isResolvingCodex}
+              customPath={codexCustomPath}
+              onCustomPathChange={setCodexCustomPath}
+              onRecheckPath={() => void handleCheckCustomPath("codex")}
+              integration={codexIntegration}
+              loginSession={codexLoginSession}
+              isLoading={isCodexLoading}
+              hasOpenAiProviderKey={hasOpenAiProviderKey}
+              error={codexError}
+              onRefresh={() => void refreshCodexIntegration()}
+              onConnect={() => void handleStartCodexLogin()}
+              onCancel={() => void handleCancelCodexLogin()}
+              onOpenUrl={handleOpenCodexLoginUrl}
+              onLogout={() => void handleCodexLogout()}
+            />
+          </div>
+
+          {/* -- Claude Code Section -- */}
+          <div className="space-y-4">
+            <div className="flex items-center gap-2">
+              <ProviderIconBadge providerId="claude" size="sm" />
+              <h3 className="text-base font-medium">{t('ai.claude.title')}</h3>
+            </div>
+
+            <ClaudeCodeCard
+              pathInfo={claudePathInfo}
+              isResolvingPath={isDiscovering || isResolvingClaude}
+              customPath={claudeCustomPath}
+              onCustomPathChange={setClaudeCustomPath}
+              onRecheckPath={() => void handleCheckCustomPath("claude")}
+            />
+          </div>
+
+          {/* -- Default Agent Section -- */}
+          {agentOptions.length > 1 && (
+            <div className="space-y-4">
+              <div className="flex items-center gap-2">
+                <Bot size={18} className="text-muted-foreground" />
+                <h3 className="text-base font-medium">{t('ai.defaultAgent')}</h3>
+              </div>
+
+              <div className="bg-muted/30 rounded-lg p-4">
+                <SettingRow
+                  label={t('ai.defaultAgent')}
+                  description={t('ai.defaultAgent.description')}
+                >
+                  <Select
+                    value={defaultAgentId}
+                    options={agentOptions}
+                    onChange={setDefaultAgentId}
+                    className="w-48"
+                  />
+                </SettingRow>
+              </div>
+            </div>
+          )}
+
+          {/* -- Web Search Section -- */}
+          <WebSearchSettings
+            webSearchConfig={webSearchConfig}
+            setWebSearchConfig={setWebSearchConfig}
+          />
+
+          {/* -- Safety Section -- */}
+          <SafetySettings
+            globalPermissionMode={globalPermissionMode}
+            setGlobalPermissionMode={setGlobalPermissionMode}
+            commandBlocklist={commandBlocklist}
+            setCommandBlocklist={setCommandBlocklist}
+            commandTimeout={commandTimeout}
+            setCommandTimeout={setCommandTimeout}
+            maxIterations={maxIterations}
+            setMaxIterations={setMaxIterations}
+          />
+        </div>
+      </div>
+    </TabsContent>
+  );
+};
+
+export default SettingsAITab;

components/settings/tabs/SettingsAppearanceTab.tsx

@@ -25,6 +25,8 @@ export default function SettingsAppearanceTab(props: {
   setUiLanguage: (language: string) => void;
   customCSS: string;
   setCustomCSS: (css: string) => void;
+  isImmersive?: boolean;
+  onToggleImmersive?: () => void;
 }) {
   const { t } = useI18n();
   const availableUIFonts = useAvailableUIFonts();
@@ -45,6 +47,8 @@ export default function SettingsAppearanceTab(props: {
     setUiLanguage,
     customCSS,
     setCustomCSS,
+    isImmersive,
+    onToggleImmersive,
   } = props;
 
   const getHslStyle = useCallback((hsl: string) => ({ backgroundColor: `hsl(${hsl})` }), []);
@@ -254,6 +258,19 @@ export default function SettingsAppearanceTab(props: {
         </SettingRow>
       </div>
 
+      <SectionHeader title={t("settings.appearance.immersiveMode")} />
+      <div className="space-y-0 divide-y divide-border rounded-lg border bg-card px-4">
+        <SettingRow
+          label={t("settings.appearance.immersiveMode")}
+          description={t("settings.appearance.immersiveMode.desc")}
+        >
+          <Toggle
+            checked={!!isImmersive}
+            onChange={() => onToggleImmersive?.()}
+          />
+        </SettingRow>
+      </div>
+
       <SectionHeader title={t("settings.appearance.customCss")} />
       <div className="space-y-2">
         <p className="text-xs text-muted-foreground">

components/settings/tabs/SettingsFileAssociationsTab.tsx

@@ -29,13 +29,10 @@ const getOpenerLabel = (
 export default function SettingsFileAssociationsTab() {
   const { t } = useI18n();
   const { getAllAssociations, removeAssociation, setOpenerForExtension } = useSftpFileAssociations();
-  const { sftpDoubleClickBehavior, setSftpDoubleClickBehavior, sftpAutoSync, setSftpAutoSync, sftpShowHiddenFiles, setSftpShowHiddenFiles, sftpUseCompressedUpload, setSftpUseCompressedUpload } = useSettingsState();
+  const { sftpDoubleClickBehavior, setSftpDoubleClickBehavior, sftpAutoSync, setSftpAutoSync, sftpShowHiddenFiles, setSftpShowHiddenFiles, sftpUseCompressedUpload, setSftpUseCompressedUpload, sftpAutoOpenSidebar, setSftpAutoOpenSidebar } = useSettingsState();
   const associations = getAllAssociations();
   const [editingExtension, setEditingExtension] = useState<string | null>(null);
 
-  // Debug log for Settings page
-  console.log('[SettingsFileAssociationsTab] Rendering with', associations.length, 'associations:', associations);
-
   const handleRemove = useCallback((extension: string) => {
     if (confirm(t('settings.sftpFileAssociations.removeConfirm', { ext: extension === 'file' ? t('sftp.opener.noExtension') : extension }))) {
       removeAssociation(extension);
@@ -253,6 +250,46 @@ export default function SettingsFileAssociationsTab() {
           </button>
         </div>
 
+        {/* Auto-open sidebar section */}
+        <div className="space-y-4">
+          <SectionHeader title={t('settings.sftp.autoOpenSidebar')} />
+          <p className="text-sm text-muted-foreground">
+            {t('settings.sftp.autoOpenSidebar.desc')}
+          </p>
+          <button
+            onClick={() => setSftpAutoOpenSidebar(!sftpAutoOpenSidebar)}
+            className={cn(
+              "w-full text-left p-4 rounded-lg border-2 transition-colors",
+              sftpAutoOpenSidebar
+                ? "border-primary bg-primary/5"
+                : "border-border hover:border-primary/50 hover:bg-secondary/50"
+            )}
+          >
+            <div className="flex items-start gap-3">
+              <div className={cn(
+                "h-5 w-5 rounded border-2 flex items-center justify-center mt-0.5 shrink-0",
+                sftpAutoOpenSidebar
+                  ? "border-primary bg-primary"
+                  : "border-muted-foreground/30"
+              )}>
+                {sftpAutoOpenSidebar && (
+                  <svg className="h-3 w-3 text-primary-foreground" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={3}>
+                    <path strokeLinecap="round" strokeLinejoin="round" d="M5 13l4 4L19 7" />
+                  </svg>
+                )}
+              </div>
+              <div className="space-y-1">
+                <Label className="font-medium cursor-pointer">
+                  {t('settings.sftp.autoOpenSidebar.enable')}
+                </Label>
+                <p className="text-sm text-muted-foreground">
+                  {t('settings.sftp.autoOpenSidebar.enableDesc')}
+                </p>
+              </div>
+            </div>
+          </button>
+        </div>
+
         {/* File associations section */}
         <div className="space-y-4">
           <SectionHeader title={t('settings.sftpFileAssociations.title')} />

components/settings/tabs/SettingsSyncTab.tsx

@@ -1,8 +1,8 @@
 import React, { useCallback } from "react";
 import type { PortForwardingRule } from "../../../domain/models";
 import type { SyncPayload } from "../../../domain/sync";
-import { buildSyncPayload, applySyncPayload } from "../../../domain/syncPayload";
-import type { SyncableVaultData } from "../../../domain/syncPayload";
+import { buildSyncPayload, applySyncPayload } from "../../../application/syncPayload";
+import type { SyncableVaultData } from "../../../application/syncPayload";
 import { STORAGE_KEY_PORT_FORWARDING } from "../../../infrastructure/config/storageKeys";
 import { localStorageAdapter } from "../../../infrastructure/persistence/localStorageAdapter";
 import { getEffectiveKnownHosts } from "../../../infrastructure/syncHelpers";
@@ -15,6 +15,7 @@ export default function SettingsSyncTab(props: {
   importDataFromString: (data: string) => void;
   importPortForwardingRules: (rules: PortForwardingRule[]) => void;
   clearVaultData: () => void;
+  onSettingsApplied?: () => void;
 }) {
   const {
     vault,
@@ -22,6 +23,7 @@ export default function SettingsSyncTab(props: {
     importDataFromString,
     importPortForwardingRules,
     clearVaultData,
+    onSettingsApplied,
   } = props;
 
   const onBuildPayload = useCallback((): SyncPayload => {
@@ -56,9 +58,10 @@ export default function SettingsSyncTab(props: {
       applySyncPayload(payload, {
         importVaultData: importDataFromString,
         importPortForwardingRules,
+        onSettingsApplied,
       });
     },
-    [importDataFromString, importPortForwardingRules],
+    [importDataFromString, importPortForwardingRules, onSettingsApplied],
   );
 
   const clearAllLocalData = useCallback(() => {

components/settings/tabs/SettingsSystemTab.tsx

@@ -1,7 +1,7 @@
 /**
  * Settings System Tab - System information, temp file management, session logs, and global hotkey
  */
-import { Download, ExternalLink, FileText, FolderOpen, HardDrive, Keyboard, RefreshCw, RotateCcw, Trash2 } from "lucide-react";
+import { AlertTriangle, ChevronDown, ChevronRight, Download, ExternalLink, FileText, FolderOpen, HardDrive, Keyboard, RefreshCw, RotateCcw, Trash2 } from "lucide-react";
 import React, { useCallback, useEffect, useState } from "react";
 import { useI18n } from "../../../application/i18n/I18nProvider";
 import { getCredentialProtectionAvailability } from "../../../infrastructure/services/credentialProtection";
@@ -13,6 +13,31 @@ import { Button } from "../../ui/button";
 import { Toggle, Select, SettingRow } from "../settings-ui";
 import { cn } from "../../../lib/utils";
 
+interface CrashLogFile {
+  fileName: string;
+  date: string;
+  size: number;
+  entryCount: number;
+}
+
+interface CrashLogEntry {
+  timestamp: string;
+  source: string;
+  message: string;
+  stack?: string;
+  errorMeta?: Record<string, unknown>;
+  extra?: Record<string, unknown>;
+  pid?: number;
+  platform?: string;
+  arch?: string;
+  version?: string;
+  electronVersion?: string;
+  osVersion?: string;
+  memoryMB?: { rss: number; heapUsed: number; heapTotal: number };
+  activeSessionCount?: number;
+  uptimeSeconds?: number;
+}
+
 interface TempDirInfo {
   path: string;
   fileCount: number;
@@ -55,11 +80,16 @@ interface SettingsSystemTabProps {
   closeToTray: boolean;
   setCloseToTray: (enabled: boolean) => void;
   hotkeyRegistrationError: string | null;
+  globalHotkeyEnabled: boolean;
+  setGlobalHotkeyEnabled: (enabled: boolean) => void;
+  autoUpdateEnabled: boolean;
+  setAutoUpdateEnabled: (enabled: boolean) => void;
   // Unified update state — from useUpdateCheck hook in SettingsPageContent
   updateState: UpdateState;
   checkNow: () => Promise<unknown>;
   installUpdate: () => void;
   openReleasePage: () => void;
+  startDownload: () => void;
 }
 
 const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
@@ -74,10 +104,15 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
   closeToTray,
   setCloseToTray,
   hotkeyRegistrationError,
+  globalHotkeyEnabled,
+  setGlobalHotkeyEnabled,
+  autoUpdateEnabled,
+  setAutoUpdateEnabled,
   updateState,
   checkNow,
   installUpdate,
   openReleasePage,
+  startDownload,
 }) => {
   const { t } = useI18n();
   const isMac = typeof navigator !== "undefined" && /Mac/i.test(navigator.platform);
@@ -90,6 +125,12 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
   const [hotkeyError, setHotkeyError] = useState<string | null>(null);
   const [credentialsAvailable, setCredentialsAvailable] = useState<boolean | null>(null);
   const [isCheckingCredentials, setIsCheckingCredentials] = useState(false);
+  const [crashLogs, setCrashLogs] = useState<CrashLogFile[]>([]);
+  const [isLoadingCrashLogs, setIsLoadingCrashLogs] = useState(false);
+  const [expandedLog, setExpandedLog] = useState<string | null>(null);
+  const [logEntries, setLogEntries] = useState<CrashLogEntry[]>([]);
+  const [isClearingCrashLogs, setIsClearingCrashLogs] = useState(false);
+  const [crashLogClearResult, setCrashLogClearResult] = useState<{ deletedCount: number } | null>(null);
 
   const [appVersion, setAppVersion] = useState('');
 
@@ -136,6 +177,73 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
     void loadCredentialProtectionStatus();
   }, [loadCredentialProtectionStatus]);
 
+  const loadCrashLogs = useCallback(async () => {
+    const bridge = netcattyBridge.get();
+    if (!bridge?.getCrashLogs) return;
+    setIsLoadingCrashLogs(true);
+    try {
+      const logs = await bridge.getCrashLogs();
+      setCrashLogs(logs);
+    } catch (err) {
+      console.error("[SettingsSystemTab] Failed to load crash logs:", err);
+    } finally {
+      setIsLoadingCrashLogs(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    void loadCrashLogs();
+  }, [loadCrashLogs]);
+
+  const expandRequestRef = React.useRef(0);
+  const handleExpandCrashLog = useCallback(async (fileName: string) => {
+    if (expandedLog === fileName) {
+      setExpandedLog(null);
+      setLogEntries([]);
+      return;
+    }
+    const bridge = netcattyBridge.get();
+    if (!bridge?.readCrashLog) return;
+    const requestId = ++expandRequestRef.current;
+    // Optimistically show expanded state while loading
+    setExpandedLog(fileName);
+    setLogEntries([]);
+    try {
+      const entries = await bridge.readCrashLog(fileName);
+      // Discard if user clicked a different file while awaiting
+      if (expandRequestRef.current !== requestId) return;
+      setLogEntries(entries);
+    } catch (err) {
+      if (expandRequestRef.current !== requestId) return;
+      console.error("[SettingsSystemTab] Failed to read crash log:", err);
+    }
+  }, [expandedLog]);
+
+  const handleClearCrashLogs = useCallback(async () => {
+    const bridge = netcattyBridge.get();
+    if (!bridge?.clearCrashLogs) return;
+    setIsClearingCrashLogs(true);
+    setCrashLogClearResult(null);
+    try {
+      const result = await bridge.clearCrashLogs();
+      setCrashLogClearResult(result);
+      setExpandedLog(null);
+      setLogEntries([]);
+      // Reload the list so partial failures still show remaining files
+      await loadCrashLogs();
+    } catch (err) {
+      console.error("[SettingsSystemTab] Failed to clear crash logs:", err);
+    } finally {
+      setIsClearingCrashLogs(false);
+    }
+  }, [loadCrashLogs]);
+
+  const handleOpenCrashLogsDir = useCallback(async () => {
+    const bridge = netcattyBridge.get();
+    if (!bridge?.openCrashLogsDir) return;
+    await bridge.openCrashLogsDir();
+  }, []);
+
   const handleClearTempFiles = useCallback(async () => {
     const bridge = netcattyBridge.get();
     if (!bridge?.clearTempDir) return;
@@ -357,7 +465,16 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
                   </Button>
                 )}
 
-                {/* Open releases — shown when update found on unsupported platform, or on check error */}
+                {/* Download button — shown when update found and no download in progress */}
+                {updateState.autoDownloadStatus === 'idle' &&
+                  updateState.manualCheckStatus === 'available' && (
+                  <Button variant="outline" size="sm" onClick={startDownload}>
+                    <Download size={14} className="mr-1.5" />
+                    {t('update.downloadNow')}
+                  </Button>
+                )}
+
+                {/* Open releases — fallback for unsupported platforms or check errors */}
                 {updateState.autoDownloadStatus === 'idle' &&
                   (updateState.manualCheckStatus === 'available' || updateState.manualCheckStatus === 'error' || (updateState.manualCheckStatus === 'idle' && updateState.hasUpdate)) && (
                   <Button variant="ghost" size="sm" onClick={openReleasePage}>
@@ -367,6 +484,15 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
                 )}
               </div>
             </div>
+            <SettingRow
+              label={t('settings.update.autoUpdateEnabled')}
+              description={t('settings.update.autoUpdateEnabledDesc')}
+            >
+              <Toggle
+                checked={autoUpdateEnabled}
+                onChange={setAutoUpdateEnabled}
+              />
+            </SettingRow>
             <p className="text-xs text-muted-foreground">
               {updateState.lastCheckedAt && (
                 <span>
@@ -432,6 +558,148 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
             </div>
           </div>
 
+          {/* Crash Logs Section */}
+          <div className="space-y-4">
+            <div className="flex items-center gap-2">
+              <AlertTriangle size={18} className="text-muted-foreground" />
+              <h3 className="text-base font-medium">{t("settings.system.crashLogs.title")}</h3>
+            </div>
+
+            <div className="bg-muted/30 rounded-lg p-4 space-y-3">
+              <p className="text-sm text-muted-foreground">
+                {t("settings.system.crashLogs.description")}
+              </p>
+
+              {crashLogs.length === 0 && !isLoadingCrashLogs && (
+                <p className="text-sm text-muted-foreground italic">
+                  {t("settings.system.crashLogs.noLogs")}
+                </p>
+              )}
+
+              {crashLogs.length > 0 && (
+                <div className="space-y-2">
+                  {crashLogs.map((log) => (
+                    <div key={log.fileName} className="border border-border/60 rounded-md overflow-hidden">
+                      <button
+                        onClick={() => handleExpandCrashLog(log.fileName)}
+                        className="w-full flex items-center justify-between px-3 py-2 text-sm hover:bg-muted/50 transition-colors"
+                      >
+                        <div className="flex items-center gap-2">
+                          {expandedLog === log.fileName ? <ChevronDown size={14} /> : <ChevronRight size={14} />}
+                          <span className="font-mono">{log.date}</span>
+                          <span className="text-muted-foreground">
+                            ({t("settings.system.crashLogs.entries").replace("{count}", String(log.entryCount))})
+                          </span>
+                        </div>
+                        <span className="text-xs text-muted-foreground">{formatBytes(log.size)}</span>
+                      </button>
+
+                      {expandedLog === log.fileName && logEntries.length > 0 && (
+                        <div className="border-t border-border/60 max-h-64 overflow-y-auto">
+                          {logEntries.map((entry, idx) => (
+                            <div key={idx} className="px-3 py-2 text-xs border-b border-border/30 last:border-b-0 space-y-1">
+                              <div className="flex items-center gap-3 flex-wrap">
+                                <span className="font-mono text-muted-foreground">
+                                  {new Date(entry.timestamp).toLocaleTimeString()}
+                                </span>
+                                <span className="px-1.5 py-0.5 rounded bg-destructive/10 text-destructive font-medium">
+                                  {entry.source}
+                                </span>
+                              </div>
+                              <p className="font-mono break-all">{entry.message}</p>
+                              {entry.errorMeta && Object.keys(entry.errorMeta).length > 0 && (
+                                <div className="flex items-center gap-2 flex-wrap">
+                                  {Object.entries(entry.errorMeta).map(([k, v]) => (
+                                    <span key={k} className="px-1.5 py-0.5 rounded bg-muted font-mono">
+                                      {k}={String(v)}
+                                    </span>
+                                  ))}
+                                </div>
+                              )}
+                              {entry.extra && Object.keys(entry.extra).length > 0 && (
+                                <div className="flex items-center gap-2 flex-wrap">
+                                  {Object.entries(entry.extra).map(([k, v]) => (
+                                    <span key={k} className="px-1.5 py-0.5 rounded bg-muted font-mono">
+                                      {k}={String(v)}
+                                    </span>
+                                  ))}
+                                </div>
+                              )}
+                              {(() => {
+                                const parts: string[] = [];
+                                if (entry.version) parts.push(`v${entry.version}`);
+                                if (entry.electronVersion) parts.push(`Electron ${entry.electronVersion}`);
+                                if (entry.platform) parts.push(`${entry.platform}/${entry.arch}`);
+                                if (entry.osVersion) parts.push(`OS ${entry.osVersion}`);
+                                if (entry.pid) parts.push(`PID ${entry.pid}`);
+                                if (entry.activeSessionCount != null && entry.activeSessionCount >= 0) parts.push(`Sessions: ${entry.activeSessionCount}`);
+                                if (entry.memoryMB) parts.push(`RAM: ${entry.memoryMB.rss}MB`);
+                                if (entry.uptimeSeconds != null) parts.push(`Uptime: ${entry.uptimeSeconds}s`);
+                                const text = parts.join('  ');
+                                return text ? (
+                                  <div className="text-muted-foreground truncate" title={text}>
+                                    {text}
+                                  </div>
+                                ) : null;
+                              })()}
+                              {entry.stack && (
+                                <pre className="mt-1 p-2 bg-muted rounded text-[11px] leading-relaxed overflow-x-auto whitespace-pre-wrap break-all text-muted-foreground">
+                                  {entry.stack}
+                                </pre>
+                              )}
+                            </div>
+                          ))}
+                        </div>
+                      )}
+                    </div>
+                  ))}
+                </div>
+              )}
+
+              {/* Actions */}
+              <div className="flex items-center gap-2 pt-2">
+                <Button
+                  variant="outline"
+                  size="sm"
+                  onClick={loadCrashLogs}
+                  disabled={isLoadingCrashLogs}
+                  className="gap-1.5"
+                >
+                  <RefreshCw size={14} className={isLoadingCrashLogs ? "animate-spin" : ""} />
+                  {t("settings.system.refresh")}
+                </Button>
+                <Button
+                  variant="outline"
+                  size="sm"
+                  onClick={handleClearCrashLogs}
+                  disabled={isClearingCrashLogs || crashLogs.length === 0}
+                  className="gap-1.5 text-destructive hover:text-destructive hover:bg-destructive/10"
+                >
+                  <Trash2 size={14} />
+                  {t("settings.system.crashLogs.clear")}
+                </Button>
+                <Button
+                  variant="ghost"
+                  size="icon"
+                  onClick={handleOpenCrashLogsDir}
+                  title={t("settings.system.openFolder")}
+                >
+                  <FolderOpen size={16} />
+                </Button>
+              </div>
+
+              {crashLogClearResult && (
+                <p className="text-sm text-muted-foreground">
+                  {t("settings.system.crashLogs.cleared").replace("{count}", String(crashLogClearResult.deletedCount))}
+                </p>
+              )}
+            </div>
+
+            <p className="text-xs text-muted-foreground">
+              {t("settings.system.crashLogs.hint")}
+            </p>
+          </div>
+
           {/* Temp Directory Section */}
           <div className="space-y-4">
             <div className="flex items-center gap-2">
@@ -580,7 +848,7 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
                   value={sessionLogsFormat}
                   options={formatOptions}
                   onChange={(val) => setSessionLogsFormat(val as SessionLogFormat)}
-                  className="w-32"
+                  className="w-44"
                   disabled={!sessionLogsEnabled}
                 />
               </SettingRow>
@@ -599,42 +867,55 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
             </div>
 
             <div className="bg-muted/30 rounded-lg p-4 space-y-4">
-              {/* Toggle Window Hotkey */}
+              {/* Enable/Disable Global Hotkey */}
               <SettingRow
-                label={t("settings.globalHotkey.toggleWindow")}
-                description={t("settings.globalHotkey.toggleWindowDesc")}
+                label={t('settings.globalHotkey.enabled')}
+                description={t('settings.globalHotkey.enabledDesc')}
               >
-                <div className="flex items-center gap-2">
-                  <button
-                    onClick={(e) => {
-                      e.stopPropagation();
-                      setIsRecordingHotkey(true);
-                    }}
-                    className={cn(
-                      "px-3 py-1.5 text-sm font-mono rounded border transition-colors min-w-[100px] text-center",
-                      isRecordingHotkey
-                        ? "border-primary bg-primary/10 animate-pulse"
-                        : "border-border hover:border-primary/50",
-                    )}
-                  >
-                    {isRecordingHotkey
-                      ? t("settings.shortcuts.recording")
-                      : toggleWindowHotkey || t("settings.globalHotkey.notSet")}
-                  </button>
-                  {toggleWindowHotkey && (
-                    <button
-                      onClick={handleResetHotkey}
-                      className="p-1 hover:bg-muted rounded"
-                      title={t("settings.globalHotkey.reset")}
-                    >
-                      <RotateCcw size={14} />
-                    </button>
-                  )}
-                </div>
+                <Toggle
+                  checked={globalHotkeyEnabled}
+                  onChange={setGlobalHotkeyEnabled}
+                />
               </SettingRow>
-              {(hotkeyError || hotkeyRegistrationError) && (
-                <p className="text-sm text-destructive">{hotkeyError || hotkeyRegistrationError}</p>
-              )}
+
+              <div className={cn(!globalHotkeyEnabled && "opacity-50 pointer-events-none")}>
+                {/* Toggle Window Hotkey */}
+                <SettingRow
+                  label={t("settings.globalHotkey.toggleWindow")}
+                  description={t("settings.globalHotkey.toggleWindowDesc")}
+                >
+                  <div className="flex items-center gap-2">
+                    <button
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        setIsRecordingHotkey(true);
+                      }}
+                      className={cn(
+                        "px-3 py-1.5 text-sm font-mono rounded border transition-colors min-w-[100px] text-center",
+                        isRecordingHotkey
+                          ? "border-primary bg-primary/10 animate-pulse"
+                          : "border-border hover:border-primary/50",
+                      )}
+                    >
+                      {isRecordingHotkey
+                        ? t("settings.shortcuts.recording")
+                        : toggleWindowHotkey || t("settings.globalHotkey.notSet")}
+                    </button>
+                    {toggleWindowHotkey && (
+                      <button
+                        onClick={handleResetHotkey}
+                        className="p-1 hover:bg-muted rounded"
+                        title={t("settings.globalHotkey.reset")}
+                      >
+                        <RotateCcw size={14} />
+                      </button>
+                    )}
+                  </div>
+                </SettingRow>
+                {(hotkeyError || hotkeyRegistrationError) && (
+                  <p className="text-sm text-destructive mt-2">{hotkeyError || hotkeyRegistrationError}</p>
+                )}
+              </div>
 
               {/* Close to Tray */}
               <SettingRow

components/settings/tabs/SettingsTerminalTab.tsx

@@ -114,23 +114,33 @@ export default function SettingsTerminalTab(props: {
       || TERMINAL_THEMES[0];
   }, [terminalThemeId, customThemes]);
 
+  const handleAutocompleteGhostTextChange = useCallback((enabled: boolean) => {
+    updateTerminalSetting("autocompleteGhostText", enabled);
+    if (enabled) {
+      updateTerminalSetting("autocompletePopupMenu", false);
+    }
+  }, [updateTerminalSetting]);
+
+  const handleAutocompletePopupMenuChange = useCallback((enabled: boolean) => {
+    updateTerminalSetting("autocompletePopupMenu", enabled);
+    if (enabled) {
+      updateTerminalSetting("autocompleteGhostText", false);
+    }
+  }, [updateTerminalSetting]);
+
   // Import .itermcolors file
   const importFileRef = useRef<HTMLInputElement>(null);
   const handleImportItermcolors = useCallback((e: React.ChangeEvent<HTMLInputElement>) => {
     const file = e.target.files?.[0];
     if (!file) {
-      console.log('[Settings] No file selected');
       return;
     }
-    console.log('[Settings] File selected:', file.name, 'size:', file.size);
     const name = file.name.replace(/\.(itermcolors|xml)$/i, '');
     const reader = new FileReader();
     reader.onload = () => {
       const xml = reader.result as string;
-      console.log('[Settings] File read successfully, length:', xml.length);
       const parsed = parseItermcolors(xml, name);
       if (parsed) {
-        console.log('[Settings] Theme parsed successfully:', parsed.id, parsed.name);
         customThemeStore.addTheme(parsed);
         setTerminalThemeId(parsed.id);
       } else {
@@ -575,6 +585,23 @@ export default function SettingsTerminalTab(props: {
           <Toggle checked={!terminalSettings.disableBracketedPaste} onChange={(v) => updateTerminalSetting("disableBracketedPaste", !v)} />
         </SettingRow>
 
+        <SettingRow
+          label={t("settings.terminal.behavior.osc52Clipboard")}
+          description={t("settings.terminal.behavior.osc52Clipboard.desc")}
+        >
+          <Select
+            value={terminalSettings.osc52Clipboard ?? 'write-only'}
+            options={[
+              { value: "off", label: t("settings.terminal.behavior.osc52Clipboard.off") },
+              { value: "write-only", label: t("settings.terminal.behavior.osc52Clipboard.writeOnly") },
+              { value: "read-write", label: t("settings.terminal.behavior.osc52Clipboard.readWrite") },
+              { value: "prompt", label: t("settings.terminal.behavior.osc52Clipboard.prompt") },
+            ]}
+            onChange={(v) => updateTerminalSetting("osc52Clipboard", v as "off" | "write-only" | "read-write" | "prompt")}
+            className="w-40"
+          />
+        </SettingRow>
+
         <SettingRow
           label={t("settings.terminal.behavior.scrollOnInput")}
           description={t("settings.terminal.behavior.scrollOnInput.desc")}
@@ -603,6 +630,13 @@ export default function SettingsTerminalTab(props: {
           <Toggle checked={terminalSettings.scrollOnPaste} onChange={(v) => updateTerminalSetting("scrollOnPaste", v)} />
         </SettingRow>
 
+        <SettingRow
+          label={t("settings.terminal.behavior.smoothScrolling")}
+          description={t("settings.terminal.behavior.smoothScrolling.desc")}
+        >
+          <Toggle checked={terminalSettings.smoothScrolling} onChange={(v) => updateTerminalSetting("smoothScrolling", v)} />
+        </SettingRow>
+
         <SettingRow
           label={t("settings.terminal.behavior.linkModifier")}
           description={t("settings.terminal.behavior.linkModifier.desc")}
@@ -616,7 +650,7 @@ export default function SettingsTerminalTab(props: {
               { value: "meta", label: t("settings.terminal.behavior.linkModifier.meta") },
             ]}
             onChange={(v) => updateTerminalSetting("linkModifier", v as LinkModifier)}
-            className="w-40"
+            className="w-48"
           />
         </SettingRow>
       </div>
@@ -831,6 +865,39 @@ export default function SettingsTerminalTab(props: {
           />
         </SettingRow>
       </div>
+      {/* Autocomplete */}
+      <SectionHeader title={t("settings.terminal.section.autocomplete")} />
+      <div className="space-y-0 divide-y divide-border rounded-lg border bg-card px-4">
+        <SettingRow
+          label={t("settings.terminal.autocomplete.enabled")}
+          description={t("settings.terminal.autocomplete.enabled.desc")}
+        >
+          <Toggle
+            checked={terminalSettings.autocompleteEnabled}
+            onChange={(v) => updateTerminalSetting("autocompleteEnabled", v)}
+          />
+        </SettingRow>
+        <SettingRow
+          label={t("settings.terminal.autocomplete.ghostText")}
+          description={t("settings.terminal.autocomplete.ghostText.desc")}
+        >
+          <Toggle
+            checked={terminalSettings.autocompleteGhostText}
+            onChange={handleAutocompleteGhostTextChange}
+            disabled={!terminalSettings.autocompleteEnabled}
+          />
+        </SettingRow>
+        <SettingRow
+          label={t("settings.terminal.autocomplete.popupMenu")}
+          description={t("settings.terminal.autocomplete.popupMenu.desc")}
+        >
+          <Toggle
+            checked={terminalSettings.autocompletePopupMenu}
+            onChange={handleAutocompletePopupMenuChange}
+            disabled={!terminalSettings.autocompleteEnabled}
+          />
+        </SettingRow>
+      </div>
     </SettingsTabContent>
   );
 }

components/settings/tabs/ai/AddProviderDropdown.tsx

@@ -0,0 +1,55 @@
+import React, { useState } from "react";
+import { ChevronDown, Plus } from "lucide-react";
+import type { AIProviderId } from "../../../../infrastructure/ai/types";
+import { PROVIDER_PRESETS } from "../../../../infrastructure/ai/types";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Button } from "../../../ui/button";
+import { cn } from "../../../../lib/utils";
+import { ProviderIconBadge } from "./ProviderIconBadge";
+
+export const AddProviderDropdown: React.FC<{
+  onAdd: (providerId: AIProviderId) => void;
+}> = ({ onAdd }) => {
+  const { t } = useI18n();
+  const [isOpen, setIsOpen] = useState(false);
+
+  const providerIds = Object.keys(PROVIDER_PRESETS) as AIProviderId[];
+
+  return (
+    <div className="relative">
+      <Button
+        variant="outline"
+        size="sm"
+        onClick={() => setIsOpen(!isOpen)}
+        className="gap-1.5"
+      >
+        <Plus size={14} />
+        {t('ai.providers.add')}
+        <ChevronDown size={12} className={cn("transition-transform", isOpen && "rotate-180")} />
+      </Button>
+
+      {isOpen && (
+        <>
+          {/* Backdrop */}
+          <div className="fixed inset-0 z-[100]" onClick={() => setIsOpen(false)} />
+          {/* Menu */}
+          <div className="absolute top-full left-0 mt-1 z-[101] min-w-[200px] rounded-md border border-border bg-popover shadow-md py-1">
+            {providerIds.map((pid) => (
+              <button
+                key={pid}
+                onClick={() => {
+                  onAdd(pid);
+                  setIsOpen(false);
+                }}
+                className="w-full flex items-center gap-2.5 px-3 py-2 text-sm hover:bg-accent transition-colors text-left"
+              >
+                <ProviderIconBadge providerId={pid} size="sm" />
+                {PROVIDER_PRESETS[pid].name}
+              </button>
+            ))}
+          </div>
+        </>
+      )}
+    </div>
+  );
+};

components/settings/tabs/ai/ClaudeCodeCard.tsx

@@ -0,0 +1,88 @@
+import React from "react";
+import { RefreshCw } from "lucide-react";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Button } from "../../../ui/button";
+import { cn } from "../../../../lib/utils";
+import type { AgentPathInfo } from "./types";
+import { ProviderIconBadge } from "./ProviderIconBadge";
+
+export const ClaudeCodeCard: React.FC<{
+  pathInfo: AgentPathInfo | null;
+  isResolvingPath: boolean;
+  customPath: string;
+  onCustomPathChange: (path: string) => void;
+  onRecheckPath: () => void;
+}> = ({
+  pathInfo,
+  isResolvingPath,
+  customPath,
+  onCustomPathChange,
+  onRecheckPath,
+}) => {
+  const { t } = useI18n();
+  const found = pathInfo?.available;
+
+  const statusText = isResolvingPath
+    ? t('ai.claude.detecting')
+    : found
+      ? t('ai.claude.detected')
+      : t('ai.claude.notFound');
+
+  const statusClassName = isResolvingPath
+    ? "text-muted-foreground"
+    : found
+      ? "text-emerald-500"
+      : "text-amber-500";
+
+  return (
+    <div className="rounded-lg border border-border/60 bg-muted/20 p-4 space-y-3">
+      <div className="flex items-start justify-between gap-4">
+        <div className="min-w-0">
+          <div className="flex items-center gap-2">
+            <ProviderIconBadge providerId="claude" size="sm" />
+            <span className="text-sm font-medium">{t('ai.claude.title')}</span>
+          </div>
+          <p className="text-xs text-muted-foreground mt-2 leading-5">
+            {t('ai.claude.description')}
+          </p>
+        </div>
+        <div className={cn("text-xs font-medium shrink-0", statusClassName)}>
+          {statusText}
+        </div>
+      </div>
+
+      {/* Path detection info */}
+      {found ? (
+        <div className="flex items-center gap-2 text-xs">
+          <span className="text-muted-foreground">{t('ai.claude.path')}</span>
+          <span className="font-mono text-foreground truncate">{pathInfo.path}</span>
+          {pathInfo.version && (
+            <>
+              <span className="text-muted-foreground">|</span>
+              <span className="text-muted-foreground">{pathInfo.version}</span>
+            </>
+          )}
+        </div>
+      ) : !isResolvingPath ? (
+        <div className="space-y-2">
+          <p className="text-xs text-amber-500">
+            {t('ai.claude.notFoundHint')}
+          </p>
+          <div className="flex items-center gap-2">
+            <input
+              type="text"
+              value={customPath}
+              onChange={(e) => onCustomPathChange(e.target.value)}
+              placeholder={t('ai.claude.customPathPlaceholder')}
+              className="flex-1 h-8 rounded-md border border-input bg-background px-3 text-sm font-mono placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+            />
+            <Button variant="outline" size="sm" onClick={onRecheckPath} disabled={!customPath.trim()}>
+              <RefreshCw size={14} className="mr-1.5" />
+              {t('ai.claude.check')}
+            </Button>
+          </div>
+        </div>
+      ) : null}
+    </div>
+  );
+};

components/settings/tabs/ai/CodexConnectionCard.tsx

@@ -0,0 +1,181 @@
+import React from "react";
+import { ExternalLink, LogIn, LogOut, RefreshCw, X } from "lucide-react";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Button } from "../../../ui/button";
+import { cn } from "../../../../lib/utils";
+import type { AgentPathInfo, CodexIntegrationStatus, CodexLoginSession } from "./types";
+import { ProviderIconBadge } from "./ProviderIconBadge";
+
+export const CodexConnectionCard: React.FC<{
+  pathInfo: AgentPathInfo | null;
+  isResolvingPath: boolean;
+  customPath: string;
+  onCustomPathChange: (path: string) => void;
+  onRecheckPath: () => void;
+  integration: CodexIntegrationStatus | null;
+  loginSession: CodexLoginSession | null;
+  isLoading: boolean;
+  hasOpenAiProviderKey: boolean;
+  error: string | null;
+  onRefresh: () => void;
+  onConnect: () => void;
+  onCancel: () => void;
+  onOpenUrl: () => void;
+  onLogout: () => void;
+}> = ({
+  pathInfo,
+  isResolvingPath,
+  customPath,
+  onCustomPathChange,
+  onRecheckPath,
+  integration,
+  loginSession,
+  isLoading,
+  hasOpenAiProviderKey,
+  error,
+  onRefresh,
+  onConnect,
+  onCancel,
+  onOpenUrl,
+  onLogout,
+}) => {
+  const { t } = useI18n();
+  const found = pathInfo?.available;
+
+  const status = isResolvingPath
+    ? t('ai.codex.detecting')
+    : !found
+      ? t('ai.codex.notFound')
+      : loginSession?.state === "running"
+        ? t('ai.codex.awaitingLogin')
+        : integration?.state === "connected_chatgpt"
+          ? t('ai.codex.connectedChatGPT')
+          : integration?.state === "connected_api_key"
+            ? t('ai.codex.connectedApiKey')
+            : integration?.state === "not_logged_in"
+              ? t('ai.codex.notConnected')
+              : t('ai.codex.statusUnknown');
+
+  const statusClassName = isResolvingPath
+    ? "text-muted-foreground"
+    : !found
+      ? "text-amber-500"
+      : loginSession?.state === "running"
+        ? "text-amber-500"
+        : integration?.isConnected
+          ? "text-emerald-500"
+          : "text-muted-foreground";
+
+  const outputText = loginSession?.error
+    ? loginSession.error
+    : loginSession?.output?.trim()
+      ? loginSession.output.trim()
+      : integration?.rawOutput?.trim()
+        ? integration.rawOutput.trim()
+        : "";
+
+  return (
+    <div className="rounded-lg border border-border/60 bg-muted/20 p-4 space-y-3">
+      <div className="flex items-start justify-between gap-4">
+        <div className="min-w-0">
+          <div className="flex items-center gap-2">
+            <ProviderIconBadge providerId="openai" size="sm" />
+            <span className="text-sm font-medium">{t('ai.codex.title')}</span>
+          </div>
+          <p className="text-xs text-muted-foreground mt-2 leading-5">
+            {t('ai.codex.description')}
+          </p>
+        </div>
+        <div className={cn("text-xs font-medium shrink-0", statusClassName)}>
+          {status}
+        </div>
+      </div>
+
+      {/* Path detection info */}
+      {found ? (
+        <div className="flex items-center gap-2 text-xs">
+          <span className="text-muted-foreground">{t('ai.codex.path')}</span>
+          <span className="font-mono text-foreground truncate">{pathInfo.path}</span>
+          {pathInfo.version && (
+            <>
+              <span className="text-muted-foreground">|</span>
+              <span className="text-muted-foreground">{pathInfo.version}</span>
+            </>
+          )}
+        </div>
+      ) : !isResolvingPath ? (
+        <div className="space-y-2">
+          <p className="text-xs text-amber-500">
+            {t('ai.codex.notFoundHint')}
+          </p>
+          <div className="flex items-center gap-2">
+            <input
+              type="text"
+              value={customPath}
+              onChange={(e) => onCustomPathChange(e.target.value)}
+              placeholder={t('ai.codex.customPathPlaceholder')}
+              className="flex-1 h-8 rounded-md border border-input bg-background px-3 text-sm font-mono placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+            />
+            <Button variant="outline" size="sm" onClick={onRecheckPath} disabled={!customPath.trim()}>
+              <RefreshCw size={14} className="mr-1.5" />
+              {t('ai.codex.check')}
+            </Button>
+          </div>
+        </div>
+      ) : null}
+
+      {/* Connection & login UI -- only when codex is detected */}
+      {found && (
+        <>
+          <div className="border-t border-border/40 pt-3 flex items-center gap-2 flex-wrap">
+            {loginSession?.state === "running" ? (
+              <>
+                <Button variant="default" size="sm" onClick={onOpenUrl} disabled={!loginSession.url}>
+                  <ExternalLink size={14} className="mr-1.5" />
+                  {t('ai.codex.openLogin')}
+                </Button>
+                <Button variant="outline" size="sm" onClick={onCancel}>
+                  <X size={14} className="mr-1.5" />
+                  {t('common.cancel')}
+                </Button>
+              </>
+            ) : integration?.isConnected ? (
+              <Button variant="outline" size="sm" onClick={onLogout}>
+                <LogOut size={14} className="mr-1.5" />
+                {t('ai.codex.logout')}
+              </Button>
+            ) : (
+              <Button variant="default" size="sm" onClick={onConnect}>
+                <LogIn size={14} className="mr-1.5" />
+                {t('ai.codex.connectChatGPT')}
+              </Button>
+            )}
+
+            <Button variant="outline" size="sm" onClick={onRefresh} disabled={isLoading}>
+              <RefreshCw size={14} className={cn("mr-1.5", isLoading && "animate-spin")} />
+              {t('ai.codex.refreshStatus')}
+            </Button>
+          </div>
+
+          {hasOpenAiProviderKey && (
+            <p className="text-xs text-emerald-500">
+              {t('ai.codex.apiKeyHint')}
+            </p>
+          )}
+        </>
+      )}
+
+      {error && (
+        <p className="text-xs text-destructive">
+          {error}
+        </p>
+      )}
+
+      {found && outputText && (
+        <pre className="rounded-md border border-border/60 bg-background px-3 py-2 text-[11px] leading-5 text-muted-foreground whitespace-pre-wrap max-h-40 overflow-auto">
+          {outputText}
+        </pre>
+      )}
+    </div>
+  );
+};

components/settings/tabs/ai/ModelSelector.tsx

@@ -0,0 +1,180 @@
+import React, { useCallback, useEffect, useMemo, useState } from "react";
+import { Check, ChevronDown, RefreshCw } from "lucide-react";
+import type { AIProviderId } from "../../../../infrastructure/ai/types";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Button } from "../../../ui/button";
+import { cn } from "../../../../lib/utils";
+import type { FetchedModel } from "./types";
+import { getFetchBridge } from "./types";
+
+export const ModelSelector: React.FC<{
+  value: string;
+  onChange: (value: string) => void;
+  baseURL: string;
+  modelsEndpoint?: string;
+  placeholder?: string;
+  apiKey?: string;
+  providerId?: AIProviderId;
+  skipTLSVerify?: boolean;
+}> = ({ value, onChange, baseURL, modelsEndpoint, placeholder, apiKey, providerId, skipTLSVerify }) => {
+  const { t } = useI18n();
+  const [models, setModels] = useState<FetchedModel[]>([]);
+  const [isLoading, setIsLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [isOpen, setIsOpen] = useState(false);
+  const [hasFetched, setHasFetched] = useState(false);
+
+  // Ollama runs locally without auth; all other providers need an API key to list models
+  const needsApiKey = providerId !== "ollama";
+  const canFetch = !!modelsEndpoint && (!needsApiKey || !!apiKey);
+
+  const fetchModels = useCallback(async () => {
+    if (!modelsEndpoint) return;
+    const bridge = getFetchBridge();
+    if (!bridge?.aiFetch) return;
+
+    setIsLoading(true);
+    setError(null);
+    try {
+      // Temporarily allow the provider's host in the backend fetch allowlist
+      // so model listing works for URLs not yet synced from the main window.
+      if (bridge.aiAllowlistAddHost && baseURL) {
+        await bridge.aiAllowlistAddHost(baseURL);
+      }
+      const url = `${baseURL.replace(/\/+$/, "")}${modelsEndpoint}`;
+      const headers: Record<string, string> = {};
+      if (apiKey) {
+        if (providerId === "anthropic") {
+          headers["x-api-key"] = apiKey;
+          headers["anthropic-version"] = "2023-06-01";
+        } else {
+          headers["Authorization"] = `Bearer ${apiKey}`;
+        }
+      }
+      const result = await bridge.aiFetch(url, "GET", headers, undefined, undefined, undefined, undefined, skipTLSVerify);
+      if (!result.ok) {
+        setError(`Failed to fetch models (${result.error || "unknown error"})`);
+        return;
+      }
+      const parsed = JSON.parse(result.data);
+      const list: FetchedModel[] = (parsed.data || parsed.models || []).map((m: { id: string; name?: string }) => ({
+        id: m.id,
+        name: m.name,
+      }));
+      list.sort((a, b) => (a.name || a.id).localeCompare(b.name || b.id));
+      setModels(list);
+      setHasFetched(true);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : "Failed to parse response");
+    } finally {
+      setIsLoading(false);
+    }
+  }, [baseURL, modelsEndpoint, apiKey, providerId, skipTLSVerify]);
+
+  // Auto-fetch when dropdown first opens
+  useEffect(() => {
+    if (isOpen && canFetch && !hasFetched && !isLoading) {
+      void fetchModels();
+    }
+  }, [isOpen, canFetch, hasFetched, isLoading, fetchModels]);
+
+  // Filter models by current input value (inline autocomplete)
+  const suggestions = useMemo(() => {
+    if (!hasFetched || models.length === 0) return [];
+    if (!value.trim()) return models;
+    const q = value.toLowerCase();
+    return models.filter((m) =>
+      m.id.toLowerCase().includes(q) || (m.name && m.name.toLowerCase().includes(q)),
+    );
+  }, [models, value, hasFetched]);
+
+  const showSuggestions = isOpen && canFetch;
+
+  return (
+    <div className="relative">
+      <div className="flex items-center gap-2">
+        <div className="relative flex-1">
+          <input
+            type="text"
+            value={value}
+            onChange={(e) => {
+              onChange(e.target.value);
+              if (canFetch && hasFetched && !isOpen) setIsOpen(true);
+            }}
+            onFocus={() => { if (canFetch) setIsOpen(true); }}
+            onBlur={() => { setIsOpen(false); }}
+            placeholder={placeholder ?? (canFetch ? t('ai.providers.searchModel') : t('ai.providers.defaultModel.placeholder'))}
+            className={cn(
+              "w-full h-8 rounded-md border border-input bg-background px-3 text-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring",
+              canFetch && "pr-8",
+            )}
+          />
+          {canFetch && (
+            <button
+              type="button"
+              onMouseDown={(e) => { e.preventDefault(); setIsOpen(!isOpen); }}
+              className="absolute right-2 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground"
+            >
+              <ChevronDown size={14} className={cn("transition-transform", isOpen && "rotate-180")} />
+            </button>
+          )}
+        </div>
+        {canFetch && (
+          <Button
+            variant="outline"
+            size="sm"
+            onClick={() => { setHasFetched(false); void fetchModels(); }}
+            disabled={isLoading}
+            className="shrink-0 px-2"
+            title={t('ai.providers.refreshModels')}
+          >
+            <RefreshCw size={14} className={isLoading ? "animate-spin" : ""} />
+          </Button>
+        )}
+      </div>
+
+      {/* Suggestions dropdown */}
+      {showSuggestions && (
+        <div className="absolute top-full left-0 right-0 mt-1 z-[101] rounded-md border border-border bg-popover shadow-md">
+          <div className="max-h-60 overflow-y-auto">
+            {isLoading ? (
+              <div className="px-3 py-3 text-center text-xs text-muted-foreground">
+                <RefreshCw size={14} className="animate-spin inline mr-1.5" />
+                {t('ai.providers.loadingModels')}
+              </div>
+            ) : error ? (
+              <div className="px-3 py-3 text-center text-xs text-destructive">{error}</div>
+            ) : suggestions.length === 0 ? (
+              <div className="px-3 py-3 text-center text-xs text-muted-foreground">
+                {hasFetched ? t('ai.providers.noMatchingModels') : t('ai.providers.clickToLoadModels')}
+              </div>
+            ) : (
+              suggestions.slice(0, 100).map((m) => (
+                <button
+                  key={m.id}
+                  onMouseDown={(e) => {
+                    e.preventDefault();
+                    onChange(m.id);
+                    setIsOpen(false);
+                  }}
+                  className={cn(
+                    "w-full text-left px-3 py-1.5 text-xs hover:bg-accent transition-colors flex items-center justify-between gap-2",
+                    m.id === value && "bg-accent",
+                  )}
+                >
+                  <span className="font-mono truncate">{m.id}</span>
+                  {m.id === value && <Check size={12} className="text-primary shrink-0" />}
+                </button>
+              ))
+            )}
+            {suggestions.length > 100 && (
+              <div className="px-3 py-2 text-center text-[10px] text-muted-foreground border-t border-border/40">
+                {t('ai.providers.showingModels').replace('{count}', String(suggestions.length))}
+              </div>
+            )}
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};

components/settings/tabs/ai/ProviderCard.tsx

@@ -0,0 +1,95 @@
+import React from "react";
+import { Pencil, Trash2 } from "lucide-react";
+import type { ProviderConfig } from "../../../../infrastructure/ai/types";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Toggle } from "../../settings-ui";
+import { cn } from "../../../../lib/utils";
+import { ProviderIconBadge } from "./ProviderIconBadge";
+import { ProviderConfigForm } from "./ProviderConfigForm";
+
+export const ProviderCard: React.FC<{
+  provider: ProviderConfig;
+  isActive: boolean;
+  onToggleEnabled: (enabled: boolean) => void;
+  onEdit: () => void;
+  onRemove: () => void;
+  onUpdate: (updates: Partial<ProviderConfig>) => void;
+  isEditing: boolean;
+  onCancelEdit: () => void;
+}> = ({ provider, isActive, onToggleEnabled, onEdit, onRemove, onUpdate, isEditing, onCancelEdit }) => {
+  const { t } = useI18n();
+  const hasApiKey = !!provider.apiKey;
+
+  return (
+    <div
+      className={cn(
+        "rounded-lg border p-4 transition-colors",
+        isActive ? "border-primary/50 bg-primary/5" : "border-border/60 bg-muted/20",
+      )}
+    >
+      <div className="flex items-center gap-3">
+        {/* Provider icon */}
+        <ProviderIconBadge providerId={provider.providerId} />
+
+        {/* Info */}
+        <div className="flex-1 min-w-0">
+          <div className="flex items-center gap-2">
+            <span className="text-sm font-medium truncate">{provider.name}</span>
+            {isActive && (
+              <span className="text-[10px] px-1.5 py-0.5 rounded-full bg-primary/20 text-primary font-medium">
+                {t('ai.providers.active')}
+              </span>
+            )}
+          </div>
+          <div className="flex items-center gap-2 mt-0.5">
+            <span
+              className={cn(
+                "text-xs",
+                hasApiKey ? "text-emerald-500" : "text-muted-foreground",
+              )}
+            >
+              {hasApiKey ? t('ai.providers.apiKeyConfigured') : t('ai.providers.noApiKey')}
+            </span>
+            {provider.defaultModel && (
+              <>
+                <span className="text-muted-foreground text-xs">|</span>
+                <span className="text-xs text-muted-foreground truncate">{provider.defaultModel}</span>
+              </>
+            )}
+          </div>
+        </div>
+
+        {/* Actions */}
+        <div className="flex items-center gap-1 shrink-0">
+          <button
+            onClick={onEdit}
+            className="p-1.5 rounded-md text-muted-foreground hover:text-foreground hover:bg-muted transition-colors"
+            title={t('ai.providers.configure')}
+          >
+            <Pencil size={14} />
+          </button>
+          <button
+            onClick={onRemove}
+            className="p-1.5 rounded-md text-muted-foreground hover:text-destructive hover:bg-destructive/10 transition-colors"
+            title={t('ai.providers.remove')}
+          >
+            <Trash2 size={14} />
+          </button>
+          <Toggle checked={provider.enabled} onChange={onToggleEnabled} />
+        </div>
+      </div>
+
+      {/* Expandable config form */}
+      {isEditing && (
+        <ProviderConfigForm
+          provider={provider}
+          onSave={(updates) => {
+            onUpdate(updates);
+            onCancelEdit();
+          }}
+          onCancel={onCancelEdit}
+        />
+      )}
+    </div>
+  );
+};

components/settings/tabs/ai/ProviderConfigForm.tsx

@@ -0,0 +1,266 @@
+import React, { useCallback, useEffect, useState } from "react";
+import { Check, ChevronDown, ChevronRight, Eye, EyeOff } from "lucide-react";
+import type { ProviderConfig, ProviderAdvancedParams } from "../../../../infrastructure/ai/types";
+import { PROVIDER_PRESETS } from "../../../../infrastructure/ai/types";
+import { encryptField, decryptField } from "../../../../infrastructure/persistence/secureFieldAdapter";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Button } from "../../../ui/button";
+import type { ProviderFormState } from "./types";
+import { ModelSelector } from "./ModelSelector";
+
+export const ProviderConfigForm: React.FC<{
+  provider: ProviderConfig;
+  onSave: (updates: Partial<ProviderConfig>) => void;
+  onCancel: () => void;
+}> = ({ provider, onSave, onCancel }) => {
+  const { t } = useI18n();
+  const [form, setForm] = useState<ProviderFormState>({
+    name: provider.name ?? PROVIDER_PRESETS[provider.providerId]?.name ?? "",
+    apiKey: "",
+    baseURL: provider.baseURL ?? PROVIDER_PRESETS[provider.providerId]?.defaultBaseURL ?? "",
+    defaultModel: provider.defaultModel ?? "",
+    skipTLSVerify: provider.skipTLSVerify ?? false,
+    advancedParams: provider.advancedParams ?? {},
+  });
+  const isCustom = provider.providerId === "custom";
+  const [showApiKey, setShowApiKey] = useState(false);
+  const [isDecrypting, setIsDecrypting] = useState(false);
+  const [showAdvanced, setShowAdvanced] = useState(false);
+
+  const preset = PROVIDER_PRESETS[provider.providerId];
+
+  // Decrypt and load existing API key on mount
+  useEffect(() => {
+    if (provider.apiKey) {
+      setIsDecrypting(true);
+      decryptField(provider.apiKey)
+        .then((decrypted) => {
+          setForm((prev) => ({ ...prev, apiKey: decrypted ?? "" }));
+        })
+        .catch(() => {
+          // If decryption fails, show raw value
+          setForm((prev) => ({ ...prev, apiKey: provider.apiKey ?? "" }));
+        })
+        .finally(() => setIsDecrypting(false));
+    }
+  }, [provider.apiKey]);
+
+  const [advancedParamRaw, setAdvancedParamRaw] = useState<Record<string, string>>({});
+  const handleAdvancedParam = useCallback((key: keyof ProviderAdvancedParams, raw: string) => {
+    setAdvancedParamRaw((prev) => ({ ...prev, [key]: raw }));
+    setForm((prev) => {
+      const next = { ...prev.advancedParams };
+      if (raw.trim() === "" || raw.trim() === "-") {
+        delete next[key];
+      } else {
+        const num = Number(raw);
+        if (!Number.isNaN(num)) {
+          next[key] = num;
+        }
+      }
+      return { ...prev, advancedParams: next };
+    });
+  }, []);
+
+  const handleSave = useCallback(async () => {
+    const cleanedParams: ProviderAdvancedParams = {};
+    const ap = form.advancedParams;
+    if (ap.maxTokens != null && Number.isFinite(ap.maxTokens) && ap.maxTokens > 0) cleanedParams.maxTokens = Math.max(1, Math.round(ap.maxTokens));
+    if (ap.temperature != null) cleanedParams.temperature = Math.min(2, Math.max(0, ap.temperature));
+    if (ap.topP != null) cleanedParams.topP = Math.min(1, Math.max(0, ap.topP));
+    if (ap.frequencyPenalty != null) cleanedParams.frequencyPenalty = Math.min(2, Math.max(-2, ap.frequencyPenalty));
+    if (ap.presencePenalty != null) cleanedParams.presencePenalty = Math.min(2, Math.max(-2, ap.presencePenalty));
+
+    const updates: Partial<ProviderConfig> = {
+      baseURL: form.baseURL || undefined,
+      defaultModel: form.defaultModel || undefined,
+      skipTLSVerify: form.skipTLSVerify || undefined,
+      advancedParams: Object.keys(cleanedParams).length > 0 ? cleanedParams : undefined,
+      ...(isCustom && form.name.trim() ? { name: form.name.trim() } : {}),
+    };
+
+    // Encrypt API key before saving
+    if (form.apiKey) {
+      updates.apiKey = await encryptField(form.apiKey);
+    } else {
+      updates.apiKey = undefined;
+    }
+
+    onSave(updates);
+  }, [form, onSave, isCustom]);
+
+  return (
+    <div className="mt-3 space-y-3 border-t border-border/40 pt-3">
+      {/* Name (custom providers only) */}
+      {isCustom && (
+        <div className="space-y-1.5">
+          <label className="text-xs font-medium text-muted-foreground">{t('ai.providers.name')}</label>
+          <input
+            type="text"
+            value={form.name}
+            onChange={(e) => setForm((prev) => ({ ...prev, name: e.target.value }))}
+            placeholder={t('ai.providers.name.placeholder')}
+            className="w-full h-8 rounded-md border border-input bg-background px-3 text-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+          />
+        </div>
+      )}
+      {/* API Key */}
+      <div className="space-y-1.5">
+        <label className="text-xs font-medium text-muted-foreground">{t('ai.providers.apiKey')}</label>
+        <div className="flex items-center gap-2">
+          <div className="relative flex-1">
+            <input
+              type={showApiKey ? "text" : "password"}
+              value={isDecrypting ? "" : form.apiKey}
+              onChange={(e) => setForm((prev) => ({ ...prev, apiKey: e.target.value }))}
+              placeholder={isDecrypting ? t('ai.providers.apiKey.decrypting') : t('ai.providers.apiKey.placeholder')}
+              disabled={isDecrypting}
+              className="w-full h-8 rounded-md border border-input bg-background px-3 pr-9 text-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:opacity-50"
+            />
+            <button
+              type="button"
+              onClick={() => setShowApiKey(!showApiKey)}
+              className="absolute right-2 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground"
+            >
+              {showApiKey ? <EyeOff size={14} /> : <Eye size={14} />}
+            </button>
+          </div>
+        </div>
+      </div>
+
+      {/* Base URL */}
+      <div className="space-y-1.5">
+        <label className="text-xs font-medium text-muted-foreground">{t('ai.providers.baseUrl')}</label>
+        <input
+          type="text"
+          value={form.baseURL}
+          onChange={(e) => setForm((prev) => ({ ...prev, baseURL: e.target.value }))}
+          placeholder={preset?.defaultBaseURL || "https://"}
+          className="w-full h-8 rounded-md border border-input bg-background px-3 text-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+        />
+      </div>
+
+      {/* Default Model */}
+      <div className="space-y-1.5">
+        <label className="text-xs font-medium text-muted-foreground">{t('ai.providers.defaultModel')}</label>
+        <ModelSelector
+          value={form.defaultModel}
+          onChange={(val) => setForm((prev) => ({ ...prev, defaultModel: val }))}
+          baseURL={form.baseURL || preset?.defaultBaseURL || ""}
+          modelsEndpoint={preset?.modelsEndpoint}
+          apiKey={form.apiKey}
+          providerId={provider.providerId}
+          skipTLSVerify={form.skipTLSVerify}
+        />
+      </div>
+
+      {/* Skip TLS Verification */}
+      <label className="flex items-center gap-2 cursor-pointer">
+        <input
+          type="checkbox"
+          checked={form.skipTLSVerify}
+          onChange={(e) => setForm((prev) => ({ ...prev, skipTLSVerify: e.target.checked }))}
+          className="rounded border-input"
+        />
+        <span className="text-xs text-muted-foreground">{t('ai.providers.skipTLSVerify')}</span>
+      </label>
+
+      {/* Advanced Parameters */}
+      <div className="space-y-2">
+        <button
+          type="button"
+          onClick={() => setShowAdvanced(!showAdvanced)}
+          className="flex items-center gap-1.5 text-xs font-medium text-muted-foreground hover:text-foreground transition-colors"
+        >
+          {showAdvanced ? <ChevronDown size={14} /> : <ChevronRight size={14} />}
+          {t('ai.providers.advancedParams')}
+        </button>
+        {showAdvanced && (
+          <div className="space-y-2.5 pl-1 border-l-2 border-border/40 ml-1">
+            <p className="text-[11px] text-muted-foreground/70 pl-3">{t('ai.providers.advancedParams.hint')}</p>
+            {/* max_tokens */}
+            <div className="space-y-1 pl-3">
+              <label className="text-xs text-muted-foreground">max_tokens</label>
+              <input
+                type="number"
+                min={1}
+                step={1}
+                value={advancedParamRaw.maxTokens ?? (form.advancedParams.maxTokens != null ? String(form.advancedParams.maxTokens) : "")}
+                onChange={(e) => handleAdvancedParam("maxTokens", e.target.value)}
+                placeholder={t('ai.providers.advancedParams.maxTokens.placeholder')}
+                className="w-full h-8 rounded-md border border-input bg-background px-3 text-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+              />
+            </div>
+            {/* temperature */}
+            <div className="space-y-1 pl-3">
+              <label className="text-xs text-muted-foreground">temperature <span className="text-muted-foreground/50">(0–2)</span></label>
+              <input
+                type="number"
+                min={0}
+                max={2}
+                step={0.1}
+                value={advancedParamRaw.temperature ?? (form.advancedParams.temperature != null ? String(form.advancedParams.temperature) : "")}
+                onChange={(e) => handleAdvancedParam("temperature", e.target.value)}
+                placeholder={t('ai.providers.advancedParams.default')}
+                className="w-full h-8 rounded-md border border-input bg-background px-3 text-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+              />
+            </div>
+            {/* top_p */}
+            <div className="space-y-1 pl-3">
+              <label className="text-xs text-muted-foreground">top_p <span className="text-muted-foreground/50">(0–1)</span></label>
+              <input
+                type="number"
+                min={0}
+                max={1}
+                step={0.05}
+                value={advancedParamRaw.topP ?? (form.advancedParams.topP != null ? String(form.advancedParams.topP) : "")}
+                onChange={(e) => handleAdvancedParam("topP", e.target.value)}
+                placeholder={t('ai.providers.advancedParams.default')}
+                className="w-full h-8 rounded-md border border-input bg-background px-3 text-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+              />
+            </div>
+            {/* frequency_penalty */}
+            <div className="space-y-1 pl-3">
+              <label className="text-xs text-muted-foreground">frequency_penalty <span className="text-muted-foreground/50">(-2–2)</span></label>
+              <input
+                type="number"
+                min={-2}
+                max={2}
+                step={0.1}
+                value={advancedParamRaw.frequencyPenalty ?? (form.advancedParams.frequencyPenalty != null ? String(form.advancedParams.frequencyPenalty) : "")}
+                onChange={(e) => handleAdvancedParam("frequencyPenalty", e.target.value)}
+                placeholder={t('ai.providers.advancedParams.default')}
+                className="w-full h-8 rounded-md border border-input bg-background px-3 text-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+              />
+            </div>
+            {/* presence_penalty */}
+            <div className="space-y-1 pl-3">
+              <label className="text-xs text-muted-foreground">presence_penalty <span className="text-muted-foreground/50">(-2–2)</span></label>
+              <input
+                type="number"
+                min={-2}
+                max={2}
+                step={0.1}
+                value={advancedParamRaw.presencePenalty ?? (form.advancedParams.presencePenalty != null ? String(form.advancedParams.presencePenalty) : "")}
+                onChange={(e) => handleAdvancedParam("presencePenalty", e.target.value)}
+                placeholder={t('ai.providers.advancedParams.default')}
+                className="w-full h-8 rounded-md border border-input bg-background px-3 text-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+              />
+            </div>
+          </div>
+        )}
+      </div>
+
+      {/* Actions */}
+      <div className="flex items-center gap-2 pt-1">
+        <Button variant="default" size="sm" onClick={() => void handleSave()}>
+          <Check size={14} className="mr-1.5" />
+          {t('common.save')}
+        </Button>
+        <Button variant="ghost" size="sm" onClick={onCancel}>
+          {t('common.cancel')}
+        </Button>
+      </div>
+    </div>
+  );
+};

components/settings/tabs/ai/ProviderIconBadge.tsx

@@ -0,0 +1,28 @@
+import React from "react";
+import { cn } from "../../../../lib/utils";
+import type { SettingsIconId } from "./types";
+import { SETTINGS_ICON_PATHS, SETTINGS_ICON_COLORS } from "./types";
+
+export const ProviderIconBadge: React.FC<{
+  providerId: SettingsIconId;
+  size?: "sm" | "md";
+}> = ({ providerId, size = "md" }) => (
+  <div
+    className={cn(
+      "rounded-md flex items-center justify-center shrink-0 overflow-hidden",
+      size === "sm" ? "w-5 h-5" : "w-8 h-8",
+      SETTINGS_ICON_COLORS[providerId],
+    )}
+  >
+    <img
+      src={SETTINGS_ICON_PATHS[providerId]}
+      alt=""
+      aria-hidden="true"
+      draggable={false}
+      className={cn(
+        "object-contain brightness-0 invert",
+        size === "sm" ? "w-3 h-3" : "w-4 h-4",
+      )}
+    />
+  </div>
+);

components/settings/tabs/ai/SafetySettings.tsx

@@ -0,0 +1,204 @@
+import React, { useCallback, useState } from "react";
+import { Plus, Shield, X } from "lucide-react";
+import type { AIPermissionMode } from "../../../../infrastructure/ai/types";
+import { DEFAULT_COMMAND_BLOCKLIST } from "../../../../infrastructure/ai/types";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Button } from "../../../ui/button";
+import { Select, SettingRow } from "../../settings-ui";
+
+export const SafetySettings: React.FC<{
+  globalPermissionMode: AIPermissionMode;
+  setGlobalPermissionMode: (mode: AIPermissionMode) => void;
+  commandBlocklist: string[];
+  setCommandBlocklist: (value: string[]) => void;
+  commandTimeout: number;
+  setCommandTimeout: (value: number) => void;
+  maxIterations: number;
+  setMaxIterations: (value: number) => void;
+}> = ({
+  globalPermissionMode,
+  setGlobalPermissionMode,
+  commandBlocklist,
+  setCommandBlocklist,
+  commandTimeout,
+  setCommandTimeout,
+  maxIterations,
+  setMaxIterations,
+}) => {
+  const { t } = useI18n();
+  const [regexErrors, setRegexErrors] = useState<Record<number, string>>({});
+
+  const validatePattern = useCallback((pattern: string, idx: number): boolean => {
+    if (!pattern) {
+      setRegexErrors((prev) => {
+        const next = { ...prev };
+        delete next[idx];
+        return next;
+      });
+      return true;
+    }
+    try {
+      new RegExp(pattern);
+      setRegexErrors((prev) => {
+        const next = { ...prev };
+        delete next[idx];
+        return next;
+      });
+      return true;
+    } catch (e) {
+      setRegexErrors((prev) => ({
+        ...prev,
+        [idx]: e instanceof Error ? e.message : String(e),
+      }));
+      return false;
+    }
+  }, []);
+
+  const handlePatternChange = useCallback((value: string, idx: number) => {
+    const next = [...commandBlocklist];
+    next[idx] = value;
+    validatePattern(value, idx);
+    setCommandBlocklist(next);
+  }, [commandBlocklist, setCommandBlocklist, validatePattern]);
+
+  const permissionModeOptions = [
+    { value: "observer", label: t('ai.safety.permissionMode.observer') },
+    { value: "confirm", label: t('ai.safety.permissionMode.confirm') },
+    { value: "autonomous", label: t('ai.safety.permissionMode.autonomous') },
+  ];
+
+  return (
+    <div className="space-y-4">
+      <div className="flex items-center gap-2">
+        <Shield size={18} className="text-muted-foreground" />
+        <h3 className="text-base font-medium">{t('ai.safety.title')}</h3>
+      </div>
+
+      <div className="bg-muted/30 rounded-lg p-4 space-y-1">
+        <SettingRow
+          label={t('ai.safety.permissionMode')}
+          description={t('ai.safety.permissionMode.description')}
+        >
+          <Select
+            value={globalPermissionMode}
+            options={permissionModeOptions}
+            onChange={(val) => setGlobalPermissionMode(val as AIPermissionMode)}
+            className="w-64"
+          />
+        </SettingRow>
+
+        <SettingRow
+          label={t('ai.safety.commandTimeout')}
+          description={t('ai.safety.commandTimeout.description')}
+        >
+          <div className="flex items-center gap-2">
+            <input
+              type="number"
+              value={commandTimeout}
+              onChange={(e) => {
+                const val = parseInt(e.target.value, 10);
+                if (!isNaN(val) && val > 0) setCommandTimeout(val);
+              }}
+              min={1}
+              max={3600}
+              className="w-20 h-9 rounded-md border border-input bg-background px-3 text-sm text-right focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+            />
+            <span className="text-xs text-muted-foreground">{t('ai.safety.commandTimeout.unit')}</span>
+          </div>
+        </SettingRow>
+
+        <SettingRow
+          label={t('ai.safety.maxIterations')}
+          description={t('ai.safety.maxIterations.description')}
+        >
+          <input
+            type="number"
+            value={maxIterations}
+            onChange={(e) => {
+              const val = parseInt(e.target.value, 10);
+              if (!isNaN(val) && val > 0) setMaxIterations(val);
+            }}
+            min={1}
+            max={100}
+            className="w-20 h-9 rounded-md border border-input bg-background px-3 text-sm text-right focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+          />
+        </SettingRow>
+      </div>
+
+      {/* Command Blocklist */}
+      <div className="bg-muted/30 rounded-lg p-4 space-y-3">
+        <div className="flex items-center justify-between">
+          <div>
+            <p className="text-sm font-medium">{t('ai.safety.blocklist')}</p>
+            <p className="text-xs text-muted-foreground">
+              {t('ai.safety.blocklist.description')}
+            </p>
+          </div>
+          <Button
+            variant="ghost"
+            size="sm"
+            className="text-xs"
+            onClick={() => { setCommandBlocklist([...DEFAULT_COMMAND_BLOCKLIST]); setRegexErrors({}); }}
+          >
+            {t('ai.safety.blocklist.reset')}
+          </Button>
+        </div>
+
+        <div className="space-y-1.5">
+          {commandBlocklist.map((pattern, idx) => (
+            <div key={idx} className="space-y-0.5">
+              <div className="flex items-center gap-2">
+                <input
+                  type="text"
+                  value={pattern}
+                  onChange={(e) => handlePatternChange(e.target.value, idx)}
+                  className={`flex-1 h-8 rounded-md border bg-background px-3 text-xs font-mono focus-visible:outline-none focus-visible:ring-1 ${
+                    regexErrors[idx]
+                      ? 'border-destructive focus-visible:ring-destructive'
+                      : 'border-input focus-visible:ring-ring'
+                  }`}
+                  placeholder={t('ai.safety.blocklist.placeholder')}
+                />
+                <button
+                  onClick={() => {
+                    const next = commandBlocklist.filter((_, i) => i !== idx);
+                    setCommandBlocklist(next);
+                    setRegexErrors((prev) => {
+                      const updated: Record<number, string> = {};
+                      for (const [k, v] of Object.entries(prev)) {
+                        const ki = Number(k);
+                        if (ki < idx) updated[ki] = v as string;
+                        else if (ki > idx) updated[ki - 1] = v as string;
+                      }
+                      return updated;
+                    });
+                  }}
+                  className="p-1 rounded hover:bg-destructive/10 text-muted-foreground hover:text-destructive transition-colors"
+                >
+                  <X size={14} />
+                </button>
+              </div>
+              {regexErrors[idx] && (
+                <p className="text-[11px] text-destructive pl-1">{regexErrors[idx]}</p>
+              )}
+            </div>
+          ))}
+        </div>
+
+        <Button
+          variant="outline"
+          size="sm"
+          className="text-xs"
+          onClick={() => setCommandBlocklist([...commandBlocklist, ''])}
+        >
+          <Plus size={14} className="mr-1" />
+          {t('ai.safety.blocklist.add')}
+        </Button>
+      </div>
+
+      <p className="text-xs text-muted-foreground">
+        {t('ai.safety.note')}
+      </p>
+    </div>
+  );
+};

components/settings/tabs/ai/WebSearchSettings.tsx

@@ -0,0 +1,220 @@
+import React, { useCallback, useEffect, useMemo, useRef, useState } from "react";
+import { Globe, Eye, EyeOff } from "lucide-react";
+import type { WebSearchConfig, WebSearchProviderId } from "../../../../infrastructure/ai/types";
+import { WEB_SEARCH_PROVIDER_PRESETS } from "../../../../infrastructure/ai/types";
+import { encryptField, decryptField } from "../../../../infrastructure/persistence/secureFieldAdapter";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Select, SettingRow } from "../../settings-ui";
+
+const SEARCH_ICON_PATHS: Record<WebSearchProviderId, string> = {
+  tavily: "/ai/search/tavily.svg",
+  exa: "/ai/search/exa.png",
+  bocha: "/ai/search/bocha.webp",
+  zhipu: "/ai/search/zhipu.png",
+  searxng: "/ai/search/searxng.svg",
+};
+
+const SearchProviderIcon: React.FC<{ providerId: WebSearchProviderId }> = ({ providerId }) => (
+  <img
+    src={SEARCH_ICON_PATHS[providerId]}
+    alt=""
+    className="w-4 h-4 shrink-0"
+  />
+);
+
+const PROVIDER_OPTIONS: Array<{ value: WebSearchProviderId; label: string; icon: React.ReactNode }> = Object.entries(
+  WEB_SEARCH_PROVIDER_PRESETS,
+).map(([id, preset]) => ({
+  value: id as WebSearchProviderId,
+  label: preset.name,
+  icon: <SearchProviderIcon providerId={id as WebSearchProviderId} />,
+}));
+
+export const WebSearchSettings: React.FC<{
+  webSearchConfig: WebSearchConfig | null;
+  setWebSearchConfig: (config: WebSearchConfig | null) => void;
+}> = ({ webSearchConfig, setWebSearchConfig }) => {
+  const { t } = useI18n();
+  const [apiKeyInput, setApiKeyInput] = useState("");
+  const [showApiKey, setShowApiKey] = useState(false);
+  const [isDecrypting, setIsDecrypting] = useState(false);
+
+  const config = useMemo(() => webSearchConfig ?? {
+    providerId: "tavily" as WebSearchProviderId,
+    enabled: false,
+    maxResults: 5,
+  }, [webSearchConfig]);
+
+  // Ref to always read the latest config in async callbacks (avoids stale closure)
+  const configRef = useRef(config);
+  configRef.current = config;
+
+  const preset = WEB_SEARCH_PROVIDER_PRESETS[config.providerId];
+
+  // Decrypt API key on mount or when provider changes (with cancellation guard)
+  const decryptSeqRef = useRef(0);
+  useEffect(() => {
+    if (config.apiKey) {
+      const seq = ++decryptSeqRef.current;
+      setIsDecrypting(true);
+      decryptField(config.apiKey)
+        .then((decrypted) => {
+          if (decryptSeqRef.current === seq) setApiKeyInput(decrypted ?? "");
+        })
+        .catch(() => {
+          if (decryptSeqRef.current === seq) setApiKeyInput(config.apiKey ?? "");
+        })
+        .finally(() => {
+          if (decryptSeqRef.current === seq) setIsDecrypting(false);
+        });
+    } else {
+      decryptSeqRef.current++;
+      setApiKeyInput("");
+      setIsDecrypting(false);
+    }
+  }, [config.apiKey, config.providerId]);
+
+  const updateConfig = useCallback(
+    (updates: Partial<WebSearchConfig>) => {
+      setWebSearchConfig({ ...configRef.current, ...updates });
+    },
+    [setWebSearchConfig],
+  );
+
+  const handleProviderChange = useCallback(
+    (val: string) => {
+      const providerId = val as WebSearchProviderId;
+      const newPreset = WEB_SEARCH_PROVIDER_PRESETS[providerId];
+      setWebSearchConfig({
+        ...configRef.current,
+        providerId,
+        apiKey: undefined,
+        apiHost: newPreset.defaultApiHost || undefined,
+      });
+      setApiKeyInput("");
+    },
+    [setWebSearchConfig],
+  );
+
+  // Sequence counter for blur saves — prevents out-of-order encryption results
+  const blurSeqRef = useRef(0);
+  const handleApiKeyBlur = useCallback(async () => {
+    if (!apiKeyInput.trim()) {
+      blurSeqRef.current++;
+      updateConfig({ apiKey: undefined });
+      return;
+    }
+    const seq = ++blurSeqRef.current;
+    const providerAtBlur = configRef.current.providerId;
+    const encrypted = await encryptField(apiKeyInput.trim());
+    // Only apply if this is still the latest blur and provider hasn't changed
+    if (blurSeqRef.current === seq && configRef.current.providerId === providerAtBlur) {
+      updateConfig({ apiKey: encrypted });
+    }
+  }, [apiKeyInput, updateConfig]);
+
+  return (
+    <div className="space-y-4">
+      <div className="flex items-center gap-2">
+        <Globe size={18} className="text-muted-foreground" />
+        <h3 className="text-base font-medium">{t("ai.webSearch.title")}</h3>
+      </div>
+
+      <div className="bg-muted/30 rounded-lg p-4 space-y-1">
+        {/* Enable/Disable */}
+        <SettingRow
+          label={t("ai.webSearch.enable")}
+          description={t("ai.webSearch.enable.description")}
+        >
+          <label className="relative inline-flex items-center cursor-pointer">
+            <input
+              type="checkbox"
+              checked={config.enabled}
+              onChange={(e) => updateConfig({ enabled: e.target.checked })}
+              className="sr-only peer"
+            />
+            <div className="w-9 h-5 bg-muted-foreground/20 peer-focus-visible:ring-2 peer-focus-visible:ring-ring rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:border after:border-gray-300 after:rounded-full after:h-4 after:w-4 after:transition-all peer-checked:bg-primary" />
+          </label>
+        </SettingRow>
+
+        {/* Provider */}
+        <SettingRow
+          label={t("ai.webSearch.provider")}
+          description={t("ai.webSearch.provider.description")}
+        >
+          <Select
+            value={config.providerId}
+            options={PROVIDER_OPTIONS}
+            onChange={handleProviderChange}
+            className="w-48"
+          />
+        </SettingRow>
+
+        {/* API Key (hidden for SearXNG) */}
+        {preset.requiresApiKey && (
+          <SettingRow
+            label={t("ai.webSearch.apiKey")}
+            description={t("ai.webSearch.apiKey.description")}
+          >
+            <div className="flex items-center gap-1.5">
+              <input
+                type={showApiKey ? "text" : "password"}
+                value={isDecrypting ? "" : apiKeyInput}
+                placeholder={isDecrypting ? t("ai.providers.apiKey.decrypting") : t("ai.webSearch.apiKey.placeholder")}
+                onChange={(e) => setApiKeyInput(e.target.value)}
+                onBlur={() => void handleApiKeyBlur()}
+                className="w-64 h-9 rounded-md border border-input bg-background px-3 text-sm focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+                disabled={isDecrypting}
+              />
+              <button
+                type="button"
+                onClick={() => setShowApiKey(!showApiKey)}
+                className="p-1.5 rounded hover:bg-muted text-muted-foreground"
+              >
+                {showApiKey ? <EyeOff size={14} /> : <Eye size={14} />}
+              </button>
+            </div>
+          </SettingRow>
+        )}
+
+        {/* API Host */}
+        <SettingRow
+          label={t("ai.webSearch.apiHost")}
+          description={
+            config.providerId === "searxng"
+              ? t("ai.webSearch.apiHost.searxngDescription")
+              : t("ai.webSearch.apiHost.description")
+          }
+        >
+          <input
+            type="text"
+            value={config.apiHost ?? preset.defaultApiHost}
+            onChange={(e) => updateConfig({ apiHost: e.target.value || undefined })}
+            placeholder={preset.defaultApiHost || "https://..."}
+            className="w-64 h-9 rounded-md border border-input bg-background px-3 text-sm focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+          />
+        </SettingRow>
+
+        {/* Max Results */}
+        <SettingRow
+          label={t("ai.webSearch.maxResults")}
+          description={t("ai.webSearch.maxResults.description")}
+        >
+          <input
+            type="number"
+            value={config.maxResults ?? 5}
+            onChange={(e) => {
+              const val = parseInt(e.target.value, 10);
+              if (!isNaN(val) && val >= 1 && val <= 20) {
+                updateConfig({ maxResults: val });
+              }
+            }}
+            min={1}
+            max={20}
+            className="w-20 h-9 rounded-md border border-input bg-background px-3 text-sm text-right focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+          />
+        </SettingRow>
+      </div>
+    </div>
+  );
+};

components/settings/tabs/ai/index.ts

@@ -0,0 +1,8 @@
+export { ProviderIconBadge } from "./ProviderIconBadge";
+export { ModelSelector } from "./ModelSelector";
+export { ProviderConfigForm } from "./ProviderConfigForm";
+export { ProviderCard } from "./ProviderCard";
+export { AddProviderDropdown } from "./AddProviderDropdown";
+export { CodexConnectionCard } from "./CodexConnectionCard";
+export { ClaudeCodeCard } from "./ClaudeCodeCard";
+export { SafetySettings } from "./SafetySettings";

components/settings/tabs/ai/types.ts

@@ -0,0 +1,131 @@
+/**
+ * Shared types for AI settings sub-components
+ */
+import type {
+  AIProviderId,
+  ExternalAgentConfig,
+  ProviderAdvancedParams,
+} from "../../../../infrastructure/ai/types";
+
+export type CodexIntegrationState =
+  | "connected_chatgpt"
+  | "connected_api_key"
+  | "not_logged_in"
+  | "unknown";
+
+export interface CodexIntegrationStatus {
+  state: CodexIntegrationState;
+  isConnected: boolean;
+  rawOutput: string;
+  exitCode: number | null;
+}
+
+export type CodexLoginState = "running" | "success" | "error" | "cancelled";
+
+export interface CodexLoginSession {
+  sessionId: string;
+  state: CodexLoginState;
+  url: string | null;
+  output: string;
+  error: string | null;
+  exitCode: number | null;
+}
+
+export interface AgentPathInfo {
+  path: string | null;
+  version: string | null;
+  available: boolean;
+}
+
+export interface ProviderFormState {
+  name: string;
+  apiKey: string;
+  baseURL: string;
+  defaultModel: string;
+  skipTLSVerify: boolean;
+  advancedParams: ProviderAdvancedParams;
+}
+
+export interface FetchedModel {
+  id: string;
+  name?: string;
+}
+
+export interface FetchBridge {
+  aiFetch?: (url: string, method?: string, headers?: Record<string, string>, body?: string, providerId?: string, skipHostCheck?: boolean, followRedirects?: boolean, skipTLSVerify?: boolean) => Promise<{ ok: boolean; data: string; error?: string }>;
+  aiAllowlistAddHost?: (baseURL: string) => Promise<{ ok: boolean }>;
+}
+
+export interface NetcattyAiBridge {
+  aiCodexGetIntegration?: () => Promise<CodexIntegrationStatus>;
+  aiCodexStartLogin?: () => Promise<{ ok: boolean; session?: CodexLoginSession; error?: string }>;
+  aiCodexGetLoginSession?: (sessionId: string) => Promise<{ ok: boolean; session?: CodexLoginSession; error?: string }>;
+  aiCodexCancelLogin?: (sessionId: string) => Promise<{ ok: boolean; found?: boolean; session?: CodexLoginSession; error?: string }>;
+  aiCodexLogout?: () => Promise<{ ok: boolean; state?: CodexIntegrationState; isConnected?: boolean; rawOutput?: string; logoutOutput?: string; error?: string }>;
+  aiResolveCli?: (params: { command: string; customPath?: string }) => Promise<AgentPathInfo>;
+  openExternal?: (url: string) => Promise<void>;
+}
+
+// Agent default configs for registration in externalAgents
+export const AGENT_DEFAULTS: Record<string, Omit<ExternalAgentConfig, "id" | "command" | "enabled">> = {
+  codex: {
+    name: "Codex CLI",
+    args: ["exec", "--full-auto", "--json", "{prompt}"],
+    icon: "openai",
+    acpCommand: "codex-acp",
+    acpArgs: [],
+  },
+  claude: {
+    name: "Claude Code",
+    args: ["-p", "--output-format", "text", "{prompt}"],
+    icon: "claude",
+    acpCommand: "claude-agent-acp",
+    acpArgs: [],
+  },
+};
+
+// ---------------------------------------------------------------------------
+// Bridge helpers
+// ---------------------------------------------------------------------------
+
+export function getBridge(): NetcattyAiBridge | undefined {
+  return (window as unknown as { netcatty?: NetcattyAiBridge }).netcatty;
+}
+
+export function getFetchBridge(): FetchBridge | undefined {
+  return (window as unknown as { netcatty?: FetchBridge }).netcatty;
+}
+
+export function normalizeCodexBridgeError(error: unknown): string {
+  const message = error instanceof Error ? error.message : String(error);
+  if (message.includes("No handler registered for 'netcatty:ai:codex:")) {
+    return "Codex main-process handlers are not loaded yet. Fully restart Netcatty, or restart the Electron dev process, then try again.";
+  }
+  return message;
+}
+
+// ---------------------------------------------------------------------------
+// Provider icon helper
+// ---------------------------------------------------------------------------
+
+export type SettingsIconId = AIProviderId | "claude";
+
+export const SETTINGS_ICON_PATHS: Record<SettingsIconId, string> = {
+  openai: "/ai/providers/openai.svg",
+  anthropic: "/ai/providers/anthropic.svg",
+  claude: "/ai/agents/claude.svg",
+  google: "/ai/providers/google.svg",
+  ollama: "/ai/providers/ollama.svg",
+  openrouter: "/ai/providers/openrouter.svg",
+  custom: "/ai/providers/custom.svg",
+};
+
+export const SETTINGS_ICON_COLORS: Record<SettingsIconId, string> = {
+  openai: "bg-emerald-600",
+  anthropic: "bg-orange-600",
+  claude: "bg-orange-600",
+  google: "bg-blue-600",
+  ollama: "bg-purple-600",
+  openrouter: "bg-pink-600",
+  custom: "bg-zinc-600",
+};

components/sftp-modal/SftpModalDialogs.tsx

@@ -1,186 +0,0 @@
-import React from "react";
-import { Loader2 } from "lucide-react";
-import { Button } from "../ui/button";
-import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle } from "../ui/dialog";
-import { Input } from "../ui/input";
-import type { RemoteFile } from "../../types";
-
-interface PermissionsState {
-  owner: { read: boolean; write: boolean; execute: boolean };
-  group: { read: boolean; write: boolean; execute: boolean };
-  others: { read: boolean; write: boolean; execute: boolean };
-}
-
-interface SftpModalDialogsProps {
-  t: (key: string, params?: Record<string, unknown>) => string;
-  showRenameDialog: boolean;
-  setShowRenameDialog: (open: boolean) => void;
-  renameTarget: RemoteFile | null;
-  renameName: string;
-  setRenameName: (value: string) => void;
-  handleRename: () => void;
-  isRenaming: boolean;
-  showPermissionsDialog: boolean;
-  setShowPermissionsDialog: (open: boolean) => void;
-  permissionsTarget: RemoteFile | null;
-  permissions: PermissionsState;
-  togglePermission: (role: "owner" | "group" | "others", perm: "read" | "write" | "execute") => void;
-  getOctalPermissions: () => string;
-  getSymbolicPermissions: () => string;
-  handleSavePermissions: () => void;
-  isChangingPermissions: boolean;
-  showCreateDialog: boolean;
-  setShowCreateDialog: (open: boolean) => void;
-  createType: "file" | "folder";
-  createName: string;
-  setCreateName: (value: string) => void;
-  isCreating: boolean;
-  handleCreateSubmit: () => void;
-}
-
-export const SftpModalDialogs: React.FC<SftpModalDialogsProps> = ({
-  t,
-  showRenameDialog,
-  setShowRenameDialog,
-  renameTarget,
-  renameName,
-  setRenameName,
-  handleRename,
-  isRenaming,
-  showPermissionsDialog,
-  setShowPermissionsDialog,
-  permissionsTarget,
-  permissions,
-  togglePermission,
-  getOctalPermissions,
-  getSymbolicPermissions,
-  handleSavePermissions,
-  isChangingPermissions,
-  showCreateDialog,
-  setShowCreateDialog,
-  createType,
-  createName,
-  setCreateName,
-  isCreating,
-  handleCreateSubmit,
-}) => (
-  <>
-    <Dialog open={showRenameDialog} onOpenChange={setShowRenameDialog}>
-      <DialogContent className="sm:max-w-[400px]">
-        <DialogHeader>
-          <DialogTitle>{t("sftp.rename.title")}</DialogTitle>
-          <DialogDescription className="truncate">
-            {renameTarget?.name}
-          </DialogDescription>
-        </DialogHeader>
-        <div className="py-4">
-          <Input
-            value={renameName}
-            onChange={(e) => setRenameName(e.target.value)}
-            placeholder={t("sftp.rename.placeholder")}
-            onKeyDown={(e) => {
-              if (e.key === "Enter") handleRename();
-            }}
-            autoFocus
-          />
-        </div>
-        <DialogFooter>
-          <Button variant="outline" onClick={() => setShowRenameDialog(false)}>
-            {t("common.cancel")}
-          </Button>
-          <Button onClick={handleRename} disabled={isRenaming || !renameName.trim()}>
-            {isRenaming ? <Loader2 size={14} className="mr-2 animate-spin" /> : null}
-            {t("common.apply")}
-          </Button>
-        </DialogFooter>
-      </DialogContent>
-    </Dialog>
-
-    <Dialog open={showPermissionsDialog} onOpenChange={setShowPermissionsDialog}>
-      <DialogContent className="sm:max-w-[400px]">
-        <DialogHeader>
-          <DialogTitle>{t("sftp.permissions.title")}</DialogTitle>
-          <DialogDescription className="truncate">
-            {permissionsTarget?.name}
-          </DialogDescription>
-        </DialogHeader>
-        <div className="space-y-4 py-4">
-          <div className="space-y-3">
-            {(["owner", "group", "others"] as const).map((role) => (
-              <div key={role} className="flex items-center gap-4">
-                <div className="w-16 text-sm font-medium">
-                  {t(`sftp.permissions.${role}`)}
-                </div>
-                <div className="flex gap-3">
-                  {(["read", "write", "execute"] as const).map((perm) => (
-                    <label key={perm} className="flex items-center gap-1.5 cursor-pointer">
-                      <input
-                        type="checkbox"
-                        checked={permissions[role][perm]}
-                        onChange={() => togglePermission(role, perm)}
-                        className="rounded border-border"
-                      />
-                      <span className="text-xs">
-                        {perm === "read" ? "R" : perm === "write" ? "W" : "X"}
-                      </span>
-                    </label>
-                  ))}
-                </div>
-              </div>
-            ))}
-          </div>
-          <div className="flex items-center justify-between pt-2 border-t border-border/60">
-            <div className="text-xs text-muted-foreground">
-              {t("sftp.permissions.octal")}: <span className="font-mono text-foreground">{getOctalPermissions()}</span>
-            </div>
-            <div className="text-xs text-muted-foreground">
-              {t("sftp.permissions.symbolic")}: <span className="font-mono text-foreground">{getSymbolicPermissions()}</span>
-            </div>
-          </div>
-        </div>
-        <DialogFooter>
-          <Button variant="outline" onClick={() => setShowPermissionsDialog(false)}>
-            {t("common.cancel")}
-          </Button>
-          <Button onClick={handleSavePermissions} disabled={isChangingPermissions}>
-            {isChangingPermissions ? <Loader2 size={14} className="mr-2 animate-spin" /> : null}
-            {t("common.apply")}
-          </Button>
-        </DialogFooter>
-      </DialogContent>
-    </Dialog>
-
-    <Dialog open={showCreateDialog} onOpenChange={setShowCreateDialog}>
-      <DialogContent className="sm:max-w-[400px]">
-        <DialogHeader>
-          <DialogTitle>
-            {t(createType === "folder" ? "sftp.newFolder" : "sftp.newFile")}
-          </DialogTitle>
-          <DialogDescription>
-            {t(createType === "folder" ? "sftp.prompt.newFolderName" : "sftp.fileName.placeholder")}
-          </DialogDescription>
-        </DialogHeader>
-        <div className="py-4">
-          <Input
-            value={createName}
-            onChange={(e) => setCreateName(e.target.value)}
-            placeholder={t(createType === "folder" ? "sftp.prompt.newFolderName" : "sftp.fileName.placeholder")}
-            onKeyDown={(e) => {
-              if (e.key === "Enter") handleCreateSubmit();
-            }}
-            autoFocus
-          />
-        </div>
-        <DialogFooter>
-          <Button variant="outline" onClick={() => setShowCreateDialog(false)}>
-            {t("common.cancel")}
-          </Button>
-          <Button onClick={handleCreateSubmit} disabled={isCreating || !createName.trim()}>
-            {isCreating ? <Loader2 size={14} className="mr-2 animate-spin" /> : null}
-            {t("common.apply")}
-          </Button>
-        </DialogFooter>
-      </DialogContent>
-    </Dialog>
-  </>
-);

components/sftp-modal/SftpModalFileList.tsx

@@ -1,438 +0,0 @@
-import React from "react";
-import { Download, Edit2, Folder, FolderOpen, FolderUp, Link, Loader2, MoreHorizontal, Plus, RefreshCw, Shield, Trash2, Upload } from "lucide-react";
-import { cn } from "../../lib/utils";
-import type { RemoteFile } from "../../types";
-import { isKnownBinaryFile } from "../../lib/sftpFileUtils";
-import { ContextMenu, ContextMenuContent, ContextMenuItem, ContextMenuSeparator, ContextMenuTrigger } from "../ui/context-menu";
-import { Button } from "../ui/button";
-import { getFileIcon } from "./fileIcons";
-
-interface VisibleRow {
-  file: RemoteFile;
-  index: number;
-  top: number;
-}
-
-interface SftpModalFileListProps {
-  t: (key: string, params?: Record<string, unknown>) => string;
-  currentPath: string;
-  isLocalSession: boolean;
-  hasFiles: boolean;
-  hasDisplayFiles: boolean;
-  selectedFiles: Set<string>;
-  dragActive: boolean;
-  loading: boolean;
-  loadingTextContent: boolean;
-  reconnecting: boolean;
-  columnWidths: { name: number; size: number; modified: number; actions: number };
-  sortField: "name" | "size" | "modified";
-  sortOrder: "asc" | "desc";
-  shouldVirtualize: boolean;
-  totalHeight: number;
-  visibleRows: VisibleRow[];
-  fileListRef: React.RefObject<HTMLDivElement>;
-  inputRef: React.RefObject<HTMLInputElement>;
-  folderInputRef: React.RefObject<HTMLInputElement>;
-  handleSort: (field: "name" | "size" | "modified") => void;
-  handleResizeStart: (field: string, e: React.MouseEvent) => void;
-  handleFileListScroll: (e: React.UIEvent<HTMLDivElement>) => void;
-  handleDrag: (e: React.DragEvent) => void;
-  handleDrop: (e: React.DragEvent) => void;
-  handleFileClick: (file: RemoteFile, index: number, e: React.MouseEvent) => void;
-  handleFileDoubleClick: (file: RemoteFile) => void;
-  handleDownload: (file: RemoteFile) => void;
-  handleDelete: (file: RemoteFile) => void;
-  handleOpenFile: (file: RemoteFile) => void;
-  openFileOpenerDialog: (file: RemoteFile) => void;
-  handleEditFile: (file: RemoteFile) => void;
-  openRenameDialog: (file: RemoteFile) => void;
-  openPermissionsDialog: (file: RemoteFile) => void;
-  handleNavigate: (path: string) => void;
-  handleCreateFolder: () => void;
-  handleCreateFile: () => void;
-  handleDownloadSelected: () => void;
-  handleDeleteSelected: () => void;
-  loadFiles: (path: string, options?: { force?: boolean }) => void;
-  formatBytes: (bytes: number | string) => string;
-  formatDate: (dateStr: string | number | undefined) => string;
-}
-
-export const SftpModalFileList: React.FC<SftpModalFileListProps> = ({
-  t,
-  currentPath,
-  isLocalSession,
-  hasFiles,
-  hasDisplayFiles,
-  selectedFiles,
-  dragActive,
-  loading,
-  loadingTextContent,
-  reconnecting,
-  columnWidths,
-  sortField,
-  sortOrder,
-  shouldVirtualize,
-  totalHeight,
-  visibleRows,
-  fileListRef,
-  inputRef,
-  folderInputRef,
-  handleSort,
-  handleResizeStart,
-  handleFileListScroll,
-  handleDrag,
-  handleDrop,
-  handleFileClick,
-  handleFileDoubleClick,
-  handleDownload,
-  handleDelete,
-  handleOpenFile,
-  openFileOpenerDialog,
-  handleEditFile,
-  openRenameDialog,
-  openPermissionsDialog,
-  handleNavigate,
-  handleCreateFolder,
-  handleCreateFile,
-  handleDownloadSelected,
-  handleDeleteSelected,
-  loadFiles,
-  formatBytes,
-  formatDate,
-}) => (
-  <>
-    <div
-      className="shrink-0 bg-muted/80 backdrop-blur-sm border-b border-border/60 px-4 py-2 flex items-center text-xs font-medium text-muted-foreground select-none"
-      style={{
-        display: "grid",
-        gridTemplateColumns: `${columnWidths.name}% ${columnWidths.size}% ${columnWidths.modified}% ${columnWidths.actions}%`,
-      }}
-    >
-      <div
-        className="flex items-center gap-1 cursor-pointer hover:text-foreground relative pr-2"
-        onClick={() => handleSort("name")}
-      >
-        <span>{t("sftp.columns.name")}</span>
-        {sortField === "name" && (
-          <span className="text-primary">{sortOrder === "asc" ? "^" : "v"}</span>
-        )}
-        <div
-          className="absolute right-0 top-0 bottom-0 w-1 cursor-col-resize hover:bg-primary/50 transition-colors"
-          onMouseDown={(e) => handleResizeStart("name", e)}
-        />
-      </div>
-      <div
-        className="flex items-center gap-1 cursor-pointer hover:text-foreground relative pr-2"
-        onClick={() => handleSort("size")}
-      >
-        <span>{t("sftp.columns.size")}</span>
-        {sortField === "size" && (
-          <span className="text-primary">{sortOrder === "asc" ? "^" : "v"}</span>
-        )}
-        <div
-          className="absolute right-0 top-0 bottom-0 w-1 cursor-col-resize hover:bg-primary/50 transition-colors"
-          onMouseDown={(e) => handleResizeStart("size", e)}
-        />
-      </div>
-      <div
-        className="flex items-center gap-1 cursor-pointer hover:text-foreground relative pr-2"
-        onClick={() => handleSort("modified")}
-      >
-        <span>{t("sftp.columns.modified")}</span>
-        {sortField === "modified" && (
-          <span className="text-primary">{sortOrder === "asc" ? "^" : "v"}</span>
-        )}
-        <div
-          className="absolute right-0 top-0 bottom-0 w-1 cursor-col-resize hover:bg-primary/50 transition-colors"
-          onMouseDown={(e) => handleResizeStart("modified", e)}
-        />
-      </div>
-      <div className="text-right">{t("sftp.columns.actions")}</div>
-    </div>
-
-    <div
-      ref={fileListRef}
-      className={cn(
-        "flex-1 min-h-0 overflow-y-auto relative",
-        dragActive && "bg-primary/5 ring-2 ring-inset ring-primary",
-      )}
-      onScroll={handleFileListScroll}
-      onDragEnter={handleDrag}
-      onDragLeave={handleDrag}
-      onDragOver={handleDrag}
-      onDrop={handleDrop}
-    >
-      {dragActive && (
-        <div className="absolute inset-0 flex items-center justify-center pointer-events-none z-10">
-          <div className="bg-background/95 p-6 rounded-xl shadow-lg border-2 border-dashed border-primary text-primary font-medium flex flex-col items-center gap-2">
-            <Upload size={32} />
-            <span>{t("sftp.dropFilesHere")}</span>
-          </div>
-        </div>
-      )}
-
-      {loading && !hasFiles && (
-        <div className="absolute inset-0 flex items-center justify-center bg-background/80">
-          <Loader2 className="h-8 w-8 animate-spin text-muted-foreground" />
-        </div>
-      )}
-
-      {loadingTextContent && (
-        <div className="absolute inset-0 flex items-center justify-center bg-background/80 z-20">
-          <div className="flex flex-col items-center gap-2">
-            <Loader2 className="h-8 w-8 animate-spin text-muted-foreground" />
-            <span className="text-sm text-muted-foreground">
-              {t("sftp.status.loading")}
-            </span>
-          </div>
-        </div>
-      )}
-
-      {reconnecting && (
-        <div className="absolute inset-0 flex items-center justify-center bg-background/80 backdrop-blur-sm z-20">
-          <div className="flex flex-col items-center gap-3 p-6 rounded-xl bg-secondary/90 border border-border/60 shadow-lg">
-            <Loader2 className="h-8 w-8 animate-spin text-primary" />
-            <div className="text-center">
-              <div className="text-sm font-medium">{t("sftp.reconnecting.title")}</div>
-              <div className="text-xs text-muted-foreground mt-1">
-                {t("sftp.reconnecting.desc")}
-              </div>
-            </div>
-          </div>
-        </div>
-      )}
-
-      {!hasDisplayFiles && !loading && (
-        <div className="flex flex-col items-center justify-center h-full text-muted-foreground">
-          <Folder size={48} className="mb-3 opacity-50" />
-          <div className="text-sm font-medium">{t("sftp.emptyDirectory")}</div>
-          <div className="text-xs mt-1">{t("sftp.dragDropToUpload")}</div>
-        </div>
-      )}
-
-      <ContextMenu>
-        <ContextMenuTrigger asChild>
-          <div
-            className={shouldVirtualize ? "relative" : "divide-y divide-border/30"}
-            style={shouldVirtualize ? { height: totalHeight } : undefined}
-          >
-            {visibleRows.map(({ file, index: idx, top }) => {
-              const isNavigableDirectory =
-                file.type === "directory" ||
-                (file.type === "symlink" && file.linkTarget === "directory");
-              const isDownloadableFile =
-                file.type === "file" ||
-                (file.type === "symlink" && file.linkTarget === "file");
-              const isParentEntry = file.name === "..";
-
-              return (
-                <ContextMenu key={file.name}>
-                  <ContextMenuTrigger>
-                    <div
-                      data-sftp-modal-row="true"
-                      className={cn(
-                        "px-4 py-2.5 items-center hover:bg-muted/50 cursor-pointer transition-colors text-sm",
-                        selectedFiles.has(file.name) && !isParentEntry && "bg-primary/10",
-                        shouldVirtualize ? "absolute left-0 right-0 border-b border-border/30" : "",
-                      )}
-                      style={
-                        shouldVirtualize
-                          ? {
-                            top,
-                            display: "grid",
-                            gridTemplateColumns: `${columnWidths.name}% ${columnWidths.size}% ${columnWidths.modified}% ${columnWidths.actions}%`,
-                          }
-                          : {
-                            display: "grid",
-                            gridTemplateColumns: `${columnWidths.name}% ${columnWidths.size}% ${columnWidths.modified}% ${columnWidths.actions}%`,
-                          }
-                      }
-                      onClick={(e) => handleFileClick(file, idx, e)}
-                      onDoubleClick={() => handleFileDoubleClick(file)}
-                    >
-                      <div className="flex items-center gap-3 min-w-0">
-                        <div className="relative shrink-0 h-7 w-7 flex items-center justify-center">
-                          {getFileIcon(
-                            file.name,
-                            isNavigableDirectory,
-                            file.type === "symlink" && !isNavigableDirectory,
-                          )}
-                          {file.type === "symlink" && (
-                            <Link
-                              size={10}
-                              className="absolute -bottom-0.5 -right-0.5 text-muted-foreground"
-                              aria-hidden="true"
-                            />
-                          )}
-                        </div>
-                        <span
-                          className={cn(
-                            "truncate font-medium",
-                            file.type === "symlink" && "italic pr-1",
-                          )}
-                        >
-                          {file.name}
-                          {file.type === "symlink" && (
-                            <span className="sr-only"> (symbolic link)</span>
-                          )}
-                        </span>
-                      </div>
-                      <div className="text-xs text-muted-foreground">
-                        {isNavigableDirectory ? "--" : formatBytes(file.size)}
-                      </div>
-                      <div className="text-xs text-muted-foreground truncate">
-                        {formatDate(file.lastModified)}
-                      </div>
-                      <div className="flex items-center justify-end gap-1">
-                        {isDownloadableFile && (
-                          <Button
-                            variant="ghost"
-                            size="icon"
-                            className="h-7 w-7"
-                            onClick={(e) => {
-                              e.stopPropagation();
-                              handleDownload(file);
-                            }}
-                            title={t("sftp.context.download")}
-                          >
-                            <Download size={14} />
-                          </Button>
-                        )}
-                        {!isParentEntry && (
-                          <Button
-                            variant="ghost"
-                            size="icon"
-                            className="h-7 w-7 hover:text-destructive"
-                            onClick={(e) => {
-                              e.stopPropagation();
-                              handleDelete(file);
-                            }}
-                            title={t("sftp.context.delete")}
-                          >
-                            <Trash2 size={14} />
-                          </Button>
-                        )}
-                      </div>
-                    </div>
-                  </ContextMenuTrigger>
-                  <ContextMenuContent>
-                    {isParentEntry ? (
-                      <ContextMenuItem
-                        onClick={() => {
-                          const segments = currentPath.split("/").filter(Boolean);
-                          segments.pop();
-                          const parentPath =
-                            segments.length === 0 ? "/" : `/${segments.join("/")}`;
-                          handleNavigate(parentPath);
-                        }}
-                      >
-                        {t("sftp.context.open")}
-                      </ContextMenuItem>
-                    ) : (
-                      <>
-                        {isNavigableDirectory && (
-                          <>
-                            <ContextMenuItem
-                              onClick={() =>
-                                handleNavigate(
-                                  currentPath === "/"
-                                    ? `/${file.name}`
-                                    : `${currentPath}/${file.name}`,
-                                )
-                              }
-                            >
-                              <FolderOpen size={14} className="mr-2" />
-                              {t("sftp.context.open")}
-                            </ContextMenuItem>
-                            {!isLocalSession && (
-                              <ContextMenuItem onClick={() => handleDownload(file)}>
-                                <Download size={14} className="mr-2" />
-                                {t("sftp.context.download")}
-                              </ContextMenuItem>
-                            )}
-                          </>
-                        )}
-                        {isDownloadableFile && (
-                          <>
-                            <ContextMenuItem onClick={() => handleOpenFile(file)}>
-                              <FolderOpen size={14} className="mr-2" />
-                              {t("sftp.context.open")}
-                            </ContextMenuItem>
-                            <ContextMenuItem onClick={() => openFileOpenerDialog(file)}>
-                              <MoreHorizontal size={14} className="mr-2" />
-                              {t("sftp.context.openWith")}
-                            </ContextMenuItem>
-                            {!isKnownBinaryFile(file.name) && (
-                              <ContextMenuItem onClick={() => handleEditFile(file)}>
-                                <Edit2 size={14} className="mr-2" />
-                                {t("sftp.context.edit")}
-                              </ContextMenuItem>
-                            )}
-                            <ContextMenuSeparator />
-                            <ContextMenuItem onClick={() => handleDownload(file)}>
-                              <Download size={14} className="mr-2" />
-                              {t("sftp.context.download")}
-                            </ContextMenuItem>
-                          </>
-                        )}
-                        <ContextMenuItem onClick={() => openRenameDialog(file)}>
-                          <Edit2 size={14} className="mr-2" />
-                          {t("sftp.context.rename")}
-                        </ContextMenuItem>
-                        {!isLocalSession && (
-                          <ContextMenuItem onClick={() => openPermissionsDialog(file)}>
-                            <Shield size={14} className="mr-2" />
-                            {t("sftp.context.permissions")}
-                          </ContextMenuItem>
-                        )}
-                        <ContextMenuItem
-                          className="text-destructive"
-                          onClick={() => handleDelete(file)}
-                        >
-                          <Trash2 size={14} className="mr-2" />
-                          {t("sftp.context.delete")}
-                        </ContextMenuItem>
-                      </>
-                    )}
-                  </ContextMenuContent>
-                </ContextMenu>
-              );
-            })}
-          </div>
-        </ContextMenuTrigger>
-        <ContextMenuContent>
-          <ContextMenuItem onClick={handleCreateFolder}>
-            <Plus className="h-4 w-4 mr-2" /> {t("sftp.newFolder")}
-          </ContextMenuItem>
-          <ContextMenuItem onClick={handleCreateFile}>
-            <Plus className="h-4 w-4 mr-2" /> {t("sftp.newFile")}
-          </ContextMenuItem>
-          <ContextMenuItem onClick={() => inputRef.current?.click()}>
-            <Upload className="h-4 w-4 mr-2" /> {t("sftp.uploadFiles")}
-          </ContextMenuItem>
-          <ContextMenuItem onClick={() => folderInputRef.current?.click()}>
-            <FolderUp className="h-4 w-4 mr-2" /> {t("sftp.uploadFolder")}
-          </ContextMenuItem>
-          <ContextMenuItem onClick={() => loadFiles(currentPath, { force: true })}>
-            <RefreshCw className="h-4 w-4 mr-2" /> {t("sftp.context.refresh")}
-          </ContextMenuItem>
-          {selectedFiles.size > 0 && (
-            <>
-              <ContextMenuItem onClick={handleDownloadSelected}>
-                <Download className="h-4 w-4 mr-2" />
-                {t("sftp.context.downloadSelected", { count: selectedFiles.size })}
-              </ContextMenuItem>
-              <ContextMenuItem
-                className="text-destructive"
-                onClick={handleDeleteSelected}
-              >
-                <Trash2 className="h-4 w-4 mr-2" />
-                {t("sftp.context.deleteSelected", { count: selectedFiles.size })}
-              </ContextMenuItem>
-            </>
-          )}
-        </ContextMenuContent>
-      </ContextMenu>
-    </div>
-  </>
-);

components/sftp-modal/SftpModalFooter.tsx

@@ -1,61 +0,0 @@
-import React from "react";
-import { Download, Trash2 } from "lucide-react";
-import { Button } from "../ui/button";
-import type { RemoteFile } from "../../types";
-
-interface SftpModalFooterProps {
-  t: (key: string, params?: Record<string, unknown>) => string;
-  files: RemoteFile[];
-  selectedFiles: Set<string>;
-  loading: boolean;
-  uploading: boolean;
-  onDownloadSelected: () => void;
-  onDeleteSelected: () => void;
-}
-
-export const SftpModalFooter: React.FC<SftpModalFooterProps> = ({
-  t,
-  files,
-  selectedFiles,
-  loading,
-  uploading,
-  onDownloadSelected,
-  onDeleteSelected,
-}) => (
-  <div className="px-4 py-2 border-t border-border/60 flex items-center justify-between text-xs text-muted-foreground bg-muted/30 flex-shrink-0">
-    <span>
-      {t("sftp.itemsCount", { count: files.length })}
-      {selectedFiles.size > 0 && (
-        <>
-          <span className="mx-2">|</span>
-          <span className="text-primary">
-            {t("sftp.selectedCount", { count: selectedFiles.size })}
-          </span>
-          <Button
-            variant="ghost"
-            size="sm"
-            className="h-5 px-2 ml-2 text-xs text-primary hover:text-primary"
-            onClick={onDownloadSelected}
-          >
-            <Download size={10} className="mr-1" /> {t("sftp.context.download")}
-          </Button>
-          <Button
-            variant="ghost"
-            size="sm"
-            className="h-5 px-2 text-xs text-destructive hover:text-destructive"
-            onClick={onDeleteSelected}
-          >
-            <Trash2 size={10} className="mr-1" /> {t("sftp.context.delete")}
-          </Button>
-        </>
-      )}
-    </span>
-    <span>
-      {loading
-        ? t("sftp.status.loading")
-        : uploading
-          ? t("sftp.status.uploading")
-          : t("sftp.status.ready")}
-    </span>
-  </div>
-);

components/sftp-modal/SftpModalHeader.tsx

@@ -1,480 +0,0 @@
-import React, { useEffect, useState } from "react";
-import { ArrowUp, Bookmark, Check, ChevronRight, Eye, EyeOff, FilePlus, FolderPlus, FolderUp, Home, Languages, MoreHorizontal, RefreshCw, Trash2, Upload, X } from "lucide-react";
-import { cn } from "../../lib/utils";
-import type { Host, SftpFilenameEncoding } from "../../types";
-import { useSftpBookmarks } from "../sftp/hooks/useSftpBookmarks";
-import { DistroAvatar } from "../DistroAvatar";
-import { Button } from "../ui/button";
-import { Input } from "../ui/input";
-import { Popover, PopoverClose, PopoverContent, PopoverTrigger } from "../ui/popover";
-import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from "../ui/tooltip";
-
-interface BreadcrumbPart {
-  part: string;
-  originalIndex: number;
-}
-
-interface SftpModalHeaderProps {
-  t: (key: string, params?: Record<string, unknown>) => string;
-  host: Host;
-  credentials: { username?: string; hostname: string; port?: number };
-  showEncoding: boolean;
-  filenameEncoding: SftpFilenameEncoding;
-  onFilenameEncodingChange: (encoding: SftpFilenameEncoding) => void;
-  currentPath: string;
-  isEditingPath: boolean;
-  editingPathValue: string;
-  setEditingPathValue: (value: string) => void;
-  handlePathSubmit: () => void;
-  handlePathKeyDown: (e: React.KeyboardEvent) => void;
-  handlePathDoubleClick: () => void;
-  isAtRoot: boolean;
-  rootLabel: string;
-  isRefreshing: boolean;
-  onUp: () => void;
-  onHome: () => void;
-  onRefresh: () => void;
-  visibleBreadcrumbs: BreadcrumbPart[];
-  hiddenBreadcrumbs: BreadcrumbPart[];
-  needsBreadcrumbTruncation: boolean;
-  breadcrumbs: string[];
-  onBreadcrumbSelect: (index: number) => void;
-  onRootSelect: () => void;
-  inputRef: React.RefObject<HTMLInputElement>;
-  folderInputRef: React.RefObject<HTMLInputElement>;
-  pathInputRef: React.RefObject<HTMLInputElement>;
-  uploading: boolean;
-  onTriggerUpload: () => void;
-  onTriggerFolderUpload: () => void;
-  onCreateFolder: () => void;
-  onCreateFile: () => void;
-  onFileSelect: (e: React.ChangeEvent<HTMLInputElement>) => void;
-  onFolderSelect: (e: React.ChangeEvent<HTMLInputElement>) => void;
-  showHiddenFiles: boolean;
-  onToggleShowHiddenFiles: () => void;
-  onUpdateHost?: (host: Host) => void;
-  onNavigateToBookmark?: (path: string) => void;
-  onClose?: () => void;
-}
-
-export const SftpModalHeader: React.FC<SftpModalHeaderProps> = ({
-  t,
-  host,
-  credentials,
-  showEncoding,
-  filenameEncoding,
-  onFilenameEncodingChange,
-  currentPath,
-  isEditingPath,
-  editingPathValue,
-  setEditingPathValue,
-  handlePathSubmit,
-  handlePathKeyDown,
-  handlePathDoubleClick,
-  isAtRoot,
-  rootLabel,
-  isRefreshing,
-  onUp,
-  onHome,
-  onRefresh,
-  visibleBreadcrumbs,
-  hiddenBreadcrumbs,
-  needsBreadcrumbTruncation,
-  breadcrumbs,
-  onBreadcrumbSelect,
-  onRootSelect,
-  inputRef,
-  folderInputRef,
-  pathInputRef,
-  uploading,
-  onTriggerUpload,
-  onTriggerFolderUpload,
-  onCreateFolder,
-  onCreateFile,
-  onFileSelect,
-  onFolderSelect,
-  showHiddenFiles,
-  onToggleShowHiddenFiles,
-  onUpdateHost,
-  onNavigateToBookmark,
-  onClose,
-}) => {
-  // Delay tooltip activation to prevent flickering when modal opens
-  const [tooltipsReady, setTooltipsReady] = useState(false);
-  const [openTooltip, setOpenTooltip] = useState<string | null>(null);
-
-  // Bookmarks
-  const {
-    bookmarks,
-    isCurrentPathBookmarked,
-    toggleBookmark,
-    deleteBookmark,
-  } = useSftpBookmarks({
-    host,
-    currentPath,
-    onUpdateHost,
-  });
-
-  useEffect(() => {
-    const timer = setTimeout(() => setTooltipsReady(true), 500);
-    return () => clearTimeout(timer);
-  }, []);
-
-  const handleTooltipOpenChange = (id: string) => (open: boolean) => {
-    if (!tooltipsReady) return;
-    setOpenTooltip(open ? id : null);
-  };
-
-  return (
-    <>
-      <div className="px-4 py-3 border-b border-border/60 flex-shrink-0">
-        <div className="flex items-center gap-3">
-          <DistroAvatar
-            host={host}
-            fallback={host.label.slice(0, 2).toUpperCase()}
-            className="h-8 w-8"
-            size="sm"
-          />
-          <div className="flex-1 min-w-0">
-            <div className="text-sm font-semibold">
-              {host.label}
-            </div>
-            <div className="text-xs text-muted-foreground font-mono">
-              {credentials.username || "root"}@{credentials.hostname}:
-              {credentials.port || 22}
-            </div>
-          </div>
-          {onClose && (
-            <Button
-              variant="ghost"
-              size="icon"
-              className="h-6 w-6 shrink-0"
-              onClick={onClose}
-            >
-              <X size={14} />
-            </Button>
-          )}
-        </div>
-      </div>
-
-      <TooltipProvider delayDuration={500} skipDelayDuration={800} disableHoverableContent>
-        <div className="px-4 py-2 border-b border-border/60 flex items-center gap-2 flex-shrink-0 bg-muted/30">
-          <Tooltip open={openTooltip === 'up'} onOpenChange={handleTooltipOpenChange('up')}>
-            <TooltipTrigger asChild>
-              <Button
-                variant="ghost"
-                size="icon"
-                className="h-7 w-7"
-                onClick={onUp}
-                disabled={isAtRoot}
-              >
-                <ArrowUp size={14} />
-              </Button>
-            </TooltipTrigger>
-            <TooltipContent>{t("sftp.nav.up")}</TooltipContent>
-          </Tooltip>
-          <Tooltip open={openTooltip === 'home'} onOpenChange={handleTooltipOpenChange('home')}>
-            <TooltipTrigger asChild>
-              <Button
-                variant="ghost"
-                size="icon"
-                className="h-7 w-7"
-                onClick={onHome}
-              >
-                <Home size={14} />
-              </Button>
-            </TooltipTrigger>
-            <TooltipContent>{t("sftp.nav.home")}</TooltipContent>
-          </Tooltip>
-          <Tooltip open={openTooltip === 'refresh'} onOpenChange={handleTooltipOpenChange('refresh')}>
-            <TooltipTrigger asChild>
-              <Button
-                variant="ghost"
-                size="icon"
-                className="h-7 w-7"
-                onClick={onRefresh}
-              >
-                <RefreshCw
-                  size={14}
-                  className={cn(isRefreshing && "animate-spin")}
-                />
-              </Button>
-            </TooltipTrigger>
-            <TooltipContent>{t("sftp.nav.refresh")}</TooltipContent>
-          </Tooltip>
-          {/* Bookmark button */}
-          {onUpdateHost && (
-            <Popover>
-              <Tooltip open={openTooltip === 'bookmark'} onOpenChange={handleTooltipOpenChange('bookmark')}>
-                <TooltipTrigger asChild>
-                  <PopoverTrigger asChild>
-                    <Button
-                      variant="ghost"
-                      size="icon"
-                      className="h-7 w-7"
-                    >
-                      <Bookmark
-                        size={14}
-                        className={cn(
-                          isCurrentPathBookmarked && "fill-yellow-500 text-yellow-500"
-                        )}
-                      />
-                    </Button>
-                  </PopoverTrigger>
-                </TooltipTrigger>
-                <TooltipContent>
-                  {isCurrentPathBookmarked ? t("sftp.bookmark.remove") : t("sftp.bookmark.add")}
-                </TooltipContent>
-              </Tooltip>
-              <PopoverContent className="w-56 p-1" align="start">
-                {/* Toggle button */}
-                <button
-                  className="w-full flex items-center gap-2 px-2 py-1.5 text-xs rounded-sm hover:bg-secondary transition-colors"
-                  onClick={toggleBookmark}
-                >
-                  <Bookmark
-                    size={12}
-                    className={cn(
-                      "shrink-0",
-                      isCurrentPathBookmarked && "fill-yellow-500 text-yellow-500"
-                    )}
-                  />
-                  {isCurrentPathBookmarked ? t("sftp.bookmark.remove") : t("sftp.bookmark.add")}
-                </button>
-                {/* Divider + list */}
-                {bookmarks.length > 0 && (
-                  <>
-                    <div className="my-1 border-t border-border/60" />
-                    {bookmarks.map((bm) => (
-                      <div
-                        key={bm.id}
-                        className="group flex items-center gap-1 px-2 py-1.5 text-xs rounded-sm hover:bg-secondary transition-colors cursor-pointer"
-                        onClick={() => onNavigateToBookmark?.(bm.path)}
-                        title={bm.path}
-                      >
-                        <Bookmark size={10} className="shrink-0 text-muted-foreground" />
-                        <span className="flex-1 truncate">{bm.label}</span>
-                        <span className="flex-1 truncate text-muted-foreground text-[10px]">{bm.path}</span>
-                        <Button
-                          variant="ghost"
-                          size="icon"
-                          className="h-4 w-4 opacity-0 group-hover:opacity-100 transition-opacity shrink-0"
-                          onClick={(e) => {
-                            e.stopPropagation();
-                            deleteBookmark(bm.id);
-                          }}
-                        >
-                          <Trash2 size={10} />
-                        </Button>
-                      </div>
-                    ))}
-                  </>
-                )}
-                {bookmarks.length === 0 && (
-                  <div className="p-2 text-xs text-muted-foreground text-center">
-                    {t("sftp.bookmark.empty")}
-                  </div>
-                )}
-              </PopoverContent>
-            </Popover>
-          )}
-          {showEncoding && (
-            <Popover>
-              <Tooltip open={openTooltip === 'encoding'} onOpenChange={handleTooltipOpenChange('encoding')}>
-                <TooltipTrigger asChild>
-                  <PopoverTrigger asChild>
-                    <Button
-                      variant="ghost"
-                      size="icon"
-                      className="h-7 w-7"
-                    >
-                      <Languages size={14} />
-                    </Button>
-                  </PopoverTrigger>
-                </TooltipTrigger>
-                <TooltipContent>{t("sftp.encoding.label")}</TooltipContent>
-              </Tooltip>
-              <PopoverContent className="w-36 p-1" align="start">
-                {(["auto", "utf-8", "gb18030"] as const).map((encoding) => (
-                  <PopoverClose asChild key={encoding}>
-                    <button
-                      className={cn(
-                        "w-full flex items-center gap-2 px-2 py-1.5 text-sm rounded-sm hover:bg-secondary transition-colors",
-                        filenameEncoding === encoding && "bg-secondary"
-                      )}
-                      onClick={() => onFilenameEncodingChange(encoding)}
-                    >
-                      <Check
-                        size={14}
-                        className={cn(
-                          "shrink-0",
-                          filenameEncoding === encoding ? "opacity-100" : "opacity-0"
-                        )}
-                      />
-                      {t(`sftp.encoding.${encoding === "utf-8" ? "utf8" : encoding}`)}
-                    </button>
-                  </PopoverClose>
-                ))}
-              </PopoverContent>
-            </Popover>
-          )}
-          <Tooltip
-            open={openTooltip === 'showHiddenFiles'}
-            onOpenChange={handleTooltipOpenChange('showHiddenFiles')}
-          >
-            <TooltipTrigger asChild>
-              <Button
-                variant={showHiddenFiles ? "secondary" : "ghost"}
-                size="icon"
-                className={cn("h-7 w-7", showHiddenFiles && "text-primary")}
-                onClick={onToggleShowHiddenFiles}
-              >
-                {showHiddenFiles ? <EyeOff size={14} /> : <Eye size={14} />}
-              </Button>
-            </TooltipTrigger>
-            <TooltipContent>{t("settings.sftp.showHiddenFiles")}</TooltipContent>
-          </Tooltip>
-
-          <div className="flex items-center gap-1 text-sm flex-1 min-w-0 overflow-hidden">
-            {isEditingPath ? (
-              <Input
-                ref={pathInputRef}
-                value={editingPathValue}
-                onChange={(e) => setEditingPathValue(e.target.value)}
-                onBlur={handlePathSubmit}
-                onKeyDown={handlePathKeyDown}
-                className="h-7 text-sm bg-background"
-                autoFocus
-              />
-            ) : (
-              <div
-                className="flex items-center gap-1 flex-1 min-w-0 cursor-text hover:bg-secondary/50 rounded px-1 py-0.5 transition-colors"
-                onDoubleClick={handlePathDoubleClick}
-                title={currentPath}
-              >
-                <button
-                  className="text-muted-foreground hover:text-foreground px-1 shrink-0"
-                  onClick={onRootSelect}
-                >
-                  {rootLabel}
-                </button>
-                {visibleBreadcrumbs.map(({ part, originalIndex }, displayIdx) => {
-                  const isLast = originalIndex === breadcrumbs.length - 1;
-                  const showEllipsisBefore =
-                    needsBreadcrumbTruncation && displayIdx === 1;
-
-                  return (
-                    <React.Fragment key={originalIndex}>
-                      {showEllipsisBefore && (
-                        <>
-                          <ChevronRight
-                            size={12}
-                            className="text-muted-foreground flex-shrink-0"
-                          />
-                          <span
-                            className="text-muted-foreground px-1 shrink-0 flex items-center cursor-default"
-                            title={`${t("sftp.showHiddenPaths")}: ${hiddenBreadcrumbs
-                              .map((h) => h.part)
-                              .join(" > ")}`}
-                          >
-                            <MoreHorizontal size={14} />
-                          </span>
-                        </>
-                      )}
-                      <ChevronRight
-                        size={12}
-                        className="text-muted-foreground flex-shrink-0"
-                      />
-                      <button
-                        className={cn(
-                          "text-muted-foreground hover:text-foreground truncate px-1 max-w-[100px]",
-                          isLast && "text-foreground font-medium",
-                        )}
-                        onClick={() => onBreadcrumbSelect(originalIndex)}
-                        title={part}
-                      >
-                        {part}
-                      </button>
-                    </React.Fragment>
-                  );
-                })}
-              </div>
-            )}
-          </div>
-
-          <div className="flex items-center gap-1 ml-auto">
-            <Tooltip open={openTooltip === 'upload'} onOpenChange={handleTooltipOpenChange('upload')}>
-              <TooltipTrigger asChild>
-                <Button
-                  variant="outline"
-                  size="icon"
-                  className="h-7 w-7"
-                  onClick={onTriggerUpload}
-                  disabled={uploading}
-                >
-                  <Upload size={14} />
-                </Button>
-              </TooltipTrigger>
-              <TooltipContent>{t("sftp.upload")}</TooltipContent>
-            </Tooltip>
-            <Tooltip open={openTooltip === 'uploadFolder'} onOpenChange={handleTooltipOpenChange('uploadFolder')}>
-              <TooltipTrigger asChild>
-                <Button
-                  variant="outline"
-                  size="icon"
-                  className="h-7 w-7"
-                  onClick={onTriggerFolderUpload}
-                  disabled={uploading}
-                >
-                  <FolderUp size={14} />
-                </Button>
-              </TooltipTrigger>
-              <TooltipContent>{t("sftp.uploadFolder")}</TooltipContent>
-            </Tooltip>
-            <Tooltip open={openTooltip === 'newFolder'} onOpenChange={handleTooltipOpenChange('newFolder')}>
-              <TooltipTrigger asChild>
-                <Button
-                  variant="outline"
-                  size="icon"
-                  className="h-7 w-7"
-                  onClick={onCreateFolder}
-                >
-                  <FolderPlus size={14} />
-                </Button>
-              </TooltipTrigger>
-              <TooltipContent>{t("sftp.newFolder")}</TooltipContent>
-            </Tooltip>
-            <Tooltip open={openTooltip === 'newFile'} onOpenChange={handleTooltipOpenChange('newFile')}>
-              <TooltipTrigger asChild>
-                <Button
-                  variant="outline"
-                  size="icon"
-                  className="h-7 w-7"
-                  onClick={onCreateFile}
-                >
-                  <FilePlus size={14} />
-                </Button>
-              </TooltipTrigger>
-              <TooltipContent>{t("sftp.newFile")}</TooltipContent>
-            </Tooltip>
-            <input
-              type="file"
-              className="hidden"
-              ref={inputRef}
-              onChange={onFileSelect}
-              multiple
-            />
-            <input
-              type="file"
-              className="hidden"
-              ref={folderInputRef}
-              onChange={onFolderSelect}
-              webkitdirectory=""
-              multiple
-            />
-          </div>
-        </div>
-      </TooltipProvider>
-    </>
-  );
-};