fix: send SSH keepalive on idle SFTP sessions to prevent NAT drop (#669) (#671)

The main openSftp() connection path was building ssh2 connect options
without setting keepaliveInterval at all, so no SSH-level keepalive
packets were sent on the SFTP channel. When the SFTP panel sits idle
(the common case while a user browses files), NAT/firewall state
tables reap the idle TCP connection after ~30-60s, causing the panel
to disconnect while the SSH terminal next to it — which has its own
keepalive config via sshBridge — stays connected. That matches the
exact symptom reported in #669.

Default to a 10s keepalive interval, matching the existing SFTP jump
host path (sftpBridge.cjs:466-467). Honor an explicitly configured
positive options.keepaliveInterval (in seconds) if one is passed in,
so the frontend can thread the user setting through later without
another bridge change.

Closes #669

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

.github/workflows/build.yml

@@ -43,6 +43,21 @@ jobs:
       - name: Install deps
         run: npm ci
 
+      - name: Install cross-platform native binaries
+        shell: bash
+        run: |
+          # npm ci only installs optional deps for the host platform, but
+          # electron-builder produces both arm64 and x64 binaries, so we
+          # need the native codex-acp binary for the other architecture too.
+          # Platform-specific codex-acp packages declare cpu/os constraints,
+          # so --force is needed to install the non-host-arch binary.
+          CODEX_VER=$(node -e "console.log(require('./node_modules/@zed-industries/codex-acp/package.json').version)")
+          if [[ "${{ matrix.name }}" == "macos" ]]; then
+            npm install "@zed-industries/codex-acp-darwin-x64@${CODEX_VER}" "@zed-industries/codex-acp-darwin-arm64@${CODEX_VER}" --no-save --force
+          elif [[ "${{ matrix.name }}" == "windows" ]]; then
+            npm install "@zed-industries/codex-acp-win32-x64@${CODEX_VER}" "@zed-industries/codex-acp-win32-arm64@${CODEX_VER}" --no-save --force
+          fi
+
       - name: Set version
         shell: bash
         run: |

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';
@@ -13,11 +14,17 @@ import { initializeFonts } from './application/state/fontStore';
 import { initializeUIFonts } from './application/state/uiFontStore';
 import { I18nProvider, useI18n } from './application/i18n/I18nProvider';
 import { matchesKeyBinding } from './domain/models';
+import { resolveGroupDefaults, applyGroupDefaults } from './domain/groupConfig';
 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';
@@ -25,11 +32,13 @@ import { Input } from './components/ui/input';
 import { Label } from './components/ui/label';
 import { ToastProvider, toast } from './components/ui/toast';
 import { VaultView, VaultSection } from './components/VaultView';
+import { QuickAddSnippetDialog } from './components/QuickAddSnippetDialog';
 import { KeyboardInteractiveModal, KeyboardInteractiveRequest } from './components/KeyboardInteractiveModal';
 import { PassphraseModal, PassphraseRequest } from './components/PassphraseModal';
 import { cn } from './lib/utils';
 import { classifyLocalShellType } from './lib/localShell';
-import { ConnectionLog, Host, HostProtocol, SerialConfig, TerminalTheme } from './types';
+import { useDiscoveredShells, resolveShellSetting } from './lib/useDiscoveredShells';
+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';
@@ -98,8 +107,7 @@ 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 })),
@@ -172,6 +180,7 @@ function App({ settings }: { settings: SettingsState }) {
   const {
     setTheme,
     resolvedTheme,
+    terminalThemeId,
     setTerminalThemeId,
     currentTerminalTheme,
     terminalFontFamilyId,
@@ -179,6 +188,7 @@ function App({ settings }: { settings: SettingsState }) {
     terminalFontSize,
     setTerminalFontSize,
     terminalSettings,
+    updateTerminalSetting,
     hotkeyScheme,
     keyBindings,
     isHotkeyRecording,
@@ -187,13 +197,27 @@ function App({ settings }: { settings: SettingsState }) {
     sftpShowHiddenFiles,
     sftpUseCompressedUpload,
     sftpAutoOpenSidebar,
+    sftpDefaultViewMode,
     editorWordWrap,
     setEditorWordWrap,
     sessionLogsEnabled,
     sessionLogsDir,
     sessionLogsFormat,
+    reapplyCurrentTheme,
+    workspaceFocusStyle,
   } = settings;
 
+  const discoveredShells = useDiscoveredShells();
+
+  // Sync workspace focus indicator style to DOM for CSS targeting
+  useEffect(() => {
+    if (workspaceFocusStyle === 'border') {
+      document.documentElement.setAttribute('data-workspace-focus', 'border');
+    } else {
+      document.documentElement.removeAttribute('data-workspace-focus');
+    }
+  }, [workspaceFocusStyle]);
+
   const {
     hosts,
     keys,
@@ -220,8 +244,11 @@ function App({ settings }: { settings: SettingsState }) {
     deleteConnectionLog,
     clearUnsavedConnectionLogs,
     updateHostDistro,
+    updateHostLastConnected,
     convertKnownHostToHost,
     importDataFromString,
+    groupConfigs,
+    updateGroupConfigs,
   } = useVaultState();
 
   const {
@@ -271,6 +298,75 @@ 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 sessionByIdRef = useRef(sessionById);
+  sessionByIdRef.current = sessionById;
+  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({
+    activeTabId,
+    activeTerminalTheme,
+    restoreOriginalTheme: reapplyCurrentTheme,
+  });
+
   // Get port forwarding rules and import function
   const { rules: portForwardingRules, importRules: importPortForwardingRules, startTunnel, stopTunnel } = usePortForwardingState();
 
@@ -295,6 +391,7 @@ function App({ settings }: { settings: SettingsState }) {
     snippetPackages,
     portForwardingRules: portForwardingRulesForSync,
     knownHosts,
+    groupConfigs,
     settingsVersion: settings.settingsVersion,
     onApplyPayload: (payload) => {
       applySyncPayload(payload, {
@@ -316,10 +413,170 @@ 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) {
+      const effectiveHost = resolveEffectiveHost(host);
+      void startTunnel(rule, effectiveHost, 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 effectiveHost = resolveEffectiveHost(host);
+
+    const { username, hostname: localHost } = systemInfoRef.current;
+    if (effectiveHost.protocol === 'serial') {
+      const portName = host.hostname.split('/').pop() || host.hostname;
+      const sessionId = connectToHost(effectiveHost);
+      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 = effectiveHost.moshEnabled ? 'mosh' : (effectiveHost.protocol || 'ssh');
+    const resolvedAuth = resolveHostAuth({ host: effectiveHost, keys, identities });
+    const sessionId = connectToHost(effectiveHost);
+    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 isCloseTabHotkey = closeTabKeyStr ? matchesKeyBinding(e, closeTabKeyStr, isMac) : false;
+    const dialogHotkeyScope = target.closest?.('[data-hotkey-close-tab="true"]');
+
+    if (isCloseTabHotkey && dialogHotkeyScope) {
+      return;
+    }
+
+    if (isCloseTabHotkey) {
+      const openDialogs = Array.from(document.querySelectorAll<HTMLElement>('[role="dialog"][data-state="open"]'));
+      const topmostOpenDialog = openDialogs[openDialogs.length - 1] ?? null;
+      const topmostDialogClose = topmostOpenDialog?.querySelector<HTMLElement>('[data-dialog-close="true"]');
+      if (topmostDialogClose) {
+        e.preventDefault();
+        e.stopPropagation();
+        topmostDialogClose.click();
+        return;
+      }
+    }
+
+    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(() => {
@@ -351,7 +608,7 @@ 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;
@@ -374,23 +631,19 @@ 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,
+    groupConfigs,
   });
 
   // Sync tray menu data + handle tray actions
@@ -431,111 +684,34 @@ 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(() => {
@@ -547,6 +723,7 @@ function App({ settings }: { settings: SettingsState }) {
       // Add to queue instead of replacing - supports multiple concurrent sessions
       setKeyboardInteractiveQueue(prev => [...prev, {
         requestId: request.requestId,
+        sessionId: request.sessionId,
         name: request.name,
         instructions: request.instructions,
         prompts: request.prompts,
@@ -561,14 +738,29 @@ function App({ settings }: { settings: SettingsState }) {
   }, []);
 
   // Handle keyboard-interactive submit
-  const handleKeyboardInteractiveSubmit = useCallback((requestId: string, responses: string[]) => {
+  const handleKeyboardInteractiveSubmit = useCallback((requestId: string, responses: string[], savePassword?: string) => {
     const bridge = netcattyBridge.get();
     if (bridge?.respondKeyboardInteractive) {
       void bridge.respondKeyboardInteractive(requestId, responses, false);
     }
+    // Save password to host if requested
+    if (savePassword) {
+      const request = keyboardInteractiveQueue.find(r => r.requestId === requestId);
+      if (request?.sessionId) {
+        const session = sessions.find(s => s.id === request.sessionId);
+        // Only save when the prompting hostname matches the session's host,
+        // to avoid overwriting the destination host's password with a jump host's password
+        if (session?.hostId && (!request.hostname || request.hostname === session.hostname)) {
+          const host = hosts.find(h => h.id === session.hostId);
+          if (host) {
+            updateHosts(hosts.map(h => h.id === host.id ? { ...h, password: savePassword } : h));
+          }
+        }
+      }
+    }
     // Remove from queue by requestId
     setKeyboardInteractiveQueue(prev => prev.filter(r => r.requestId !== requestId));
-  }, []);
+  }, [keyboardInteractiveQueue, sessions, hosts, updateHosts]);
 
   // Handle keyboard-interactive cancel
   const handleKeyboardInteractiveCancel = useCallback((requestId: string) => {
@@ -659,22 +851,37 @@ function App({ settings }: { settings: SettingsState }) {
   addConnectionLogRef.current = addConnectionLog;
 
   const createLocalTerminalWithCurrentShell = useCallback(() => {
+    const resolved = resolveShellSetting(terminalSettings.localShell, discoveredShells);
+    const matchedShell = discoveredShells.find(s => s.id === terminalSettings.localShell);
     return createLocalTerminal({
-      shellType: classifyLocalShellType(terminalSettings.localShell, navigator.userAgent),
+      shellType: classifyLocalShellType(resolved?.command || terminalSettings.localShell, navigator.userAgent),
+      shell: resolved?.command,
+      shellArgs: resolved?.args,
+      shellName: matchedShell?.name,
+      shellIcon: matchedShell?.icon,
     });
-  }, [createLocalTerminal, terminalSettings.localShell]);
+  }, [createLocalTerminal, terminalSettings.localShell, discoveredShells]);
 
   const splitSessionWithCurrentShell = useCallback((sessionId: string, direction: 'horizontal' | 'vertical') => {
+    const resolved = resolveShellSetting(terminalSettings.localShell, discoveredShells);
     return splitSession(sessionId, direction, {
-      localShellType: classifyLocalShellType(terminalSettings.localShell, navigator.userAgent),
+      localShellType: classifyLocalShellType(resolved?.command || terminalSettings.localShell, navigator.userAgent),
     });
-  }, [splitSession, terminalSettings.localShell]);
+  }, [splitSession, terminalSettings.localShell, discoveredShells]);
 
   const copySessionWithCurrentShell = useCallback((sessionId: string) => {
+    const resolved = resolveShellSetting(terminalSettings.localShell, discoveredShells);
     return copySession(sessionId, {
-      localShellType: classifyLocalShellType(terminalSettings.localShell, navigator.userAgent),
+      localShellType: classifyLocalShellType(resolved?.command || terminalSettings.localShell, navigator.userAgent),
     });
-  }, [copySession, terminalSettings.localShell]);
+  }, [copySession, terminalSettings.localShell, discoveredShells]);
+
+  const closeTabKeyStr = useMemo(() => {
+    if (hotkeyScheme === 'disabled') return null;
+    const closeTabBinding = keyBindings.find((binding) => binding.action === 'closeTab');
+    if (!closeTabBinding) return null;
+    return hotkeyScheme === 'mac' ? closeTabBinding.mac : closeTabBinding.pc;
+  }, [hotkeyScheme, keyBindings]);
 
   // Shared hotkey action handler - used by both global handler and terminal callback
   const executeHotkeyAction = useCallback((action: string, e: KeyboardEvent) => {
@@ -779,32 +986,32 @@ function App({ settings }: { settings: SettingsState }) {
         break;
       }
       case 'splitHorizontal': {
-        // Split current terminal horizontally (top/bottom)
         const currentId = activeTabStore.getActiveTabId();
-        // Check if it's a standalone session or we're in a workspace
         const activeSession = sessions.find(s => s.id === currentId);
         const activeWs = workspaces.find(w => w.id === currentId);
         if (activeSession && !activeSession.workspaceId) {
-          // Standalone session - split it
           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
-          if (IS_DEV) console.log('[Hotkey] Split horizontal in workspace - use context menu on specific terminal');
+          const liveIds = collectSessionIds(activeWs.root);
+          const targetId = (activeWs.focusedSessionId && liveIds.includes(activeWs.focusedSessionId))
+            ? activeWs.focusedSessionId
+            : liveIds[0];
+          if (targetId) splitSessionWithCurrentShell(targetId, 'horizontal');
         }
         break;
       }
       case 'splitVertical': {
-        // Split current terminal vertically (left/right)
         const currentId = activeTabStore.getActiveTabId();
         const activeSession = sessions.find(s => s.id === currentId);
         const activeWs = workspaces.find(w => w.id === currentId);
         if (activeSession && !activeSession.workspaceId) {
-          // Standalone session - split it
           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');
+          const liveIds = collectSessionIds(activeWs.root);
+          const targetId = (activeWs.focusedSessionId && liveIds.includes(activeWs.focusedSessionId))
+            ? activeWs.focusedSessionId
+            : liveIds[0];
+          if (targetId) splitSessionWithCurrentShell(targetId, 'vertical');
         }
         break;
       }
@@ -852,96 +1059,21 @@ 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 [];
@@ -954,7 +1086,7 @@ 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);
@@ -964,6 +1096,9 @@ function App({ settings }: { settings: SettingsState }) {
   }, [hosts, updateHosts, t]);
 
   // System info for connection logs
+  const hostsRef = useRef(hosts);
+  hostsRef.current = hosts;
+
   const systemInfoRef = useRef<{ username: string; hostname: string }>({
     username: 'user',
     hostname: 'localhost',
@@ -985,13 +1120,24 @@ function App({ settings }: { settings: SettingsState }) {
   }, []);
 
   // Wrapper to create local terminal with logging
-  const handleCreateLocalTerminal = useCallback(() => {
+  const handleCreateLocalTerminal = useCallback((shell?: { command: string; args?: string[]; name?: string; icon?: string }) => {
     const { username, hostname } = systemInfoRef.current;
-    const sessionId = createLocalTerminalWithCurrentShell();
+    const resolved = shell ?? resolveShellSetting(terminalSettings.localShell, discoveredShells);
+    // Match by ID (not command) to avoid WSL distros all sharing wsl.exe
+    const matchedShell = !shell ? discoveredShells.find(s => s.id === terminalSettings.localShell) : undefined;
+    const shellName = shell?.name ?? matchedShell?.name;
+    const shellIcon = shell?.icon ?? matchedShell?.icon;
+    const sessionId = createLocalTerminal({
+      shellType: classifyLocalShellType(resolved?.command || terminalSettings.localShell, navigator.userAgent),
+      shell: resolved?.command,
+      shellArgs: resolved?.args,
+      shellName,
+      shellIcon,
+    });
     addConnectionLog({
       sessionId,
       hostId: '',
-      hostLabel: 'Local Terminal',
+      hostLabel: shellName || 'Local Terminal',
       hostname: 'localhost',
       username: username,
       protocol: 'local',
@@ -1000,16 +1146,24 @@ function App({ settings }: { settings: SettingsState }) {
       localHostname: hostname,
       saved: false,
     });
-  }, [addConnectionLog, createLocalTerminalWithCurrentShell]);
+  }, [addConnectionLog, createLocalTerminal, terminalSettings.localShell, discoveredShells]);
+
+  const resolveEffectiveHost = useCallback((host: Host): Host => {
+    if (!host.group) return host;
+    const groupDefaults = resolveGroupDefaults(host.group, groupConfigs);
+    return applyGroupDefaults(host, groupDefaults);
+  }, [groupConfigs]);
 
   // Wrapper to connect to host with logging
   const handleConnectToHost = useCallback((host: Host) => {
     const { username, hostname: localHost } = systemInfoRef.current;
 
+    const effectiveHost = resolveEffectiveHost(host);
+
     // Handle serial hosts separately
-    if (host.protocol === 'serial') {
+    if (effectiveHost.protocol === 'serial') {
       const portName = host.hostname.split('/').pop() || host.hostname;
-      const sessionId = connectToHost(host);
+      const sessionId = connectToHost(effectiveHost);
       addConnectionLog({
         sessionId,
         hostId: host.id,
@@ -1025,9 +1179,9 @@ function App({ settings }: { settings: SettingsState }) {
       return;
     }
 
-    const protocol = host.moshEnabled ? 'mosh' : (host.protocol || 'ssh');
-    const resolvedAuth = resolveHostAuth({ host, keys, identities });
-    const sessionId = connectToHost(host);
+    const protocol = effectiveHost.moshEnabled ? 'mosh' : (effectiveHost.protocol || 'ssh');
+    const resolvedAuth = resolveHostAuth({ host: effectiveHost, keys, identities });
+    const sessionId = connectToHost(effectiveHost);
     addConnectionLog({
       sessionId,
       hostId: host.id,
@@ -1040,13 +1194,24 @@ function App({ settings }: { settings: SettingsState }) {
       localHostname: localHost,
       saved: false,
     });
-  }, [addConnectionLog, connectToHost, identities, keys]);
+  }, [addConnectionLog, connectToHost, resolveEffectiveHost, identities, keys]);
+
+  // Wrap updateSessionStatus to track lastConnectedAt on successful connection
+  const handleSessionStatusChange = useCallback((sessionId: string, status: TerminalSession['status']) => {
+    updateSessionStatus(sessionId, status);
+    if (status === 'connected') {
+      const session = sessionByIdRef.current.get(sessionId);
+      if (session?.hostId) {
+        updateHostLastConnected(session.hostId);
+      }
+    }
+  }, [updateSessionStatus, updateHostLastConnected]);
 
   // 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: '',
@@ -1094,24 +1259,25 @@ function App({ settings }: { settings: SettingsState }) {
     }
   }, [sessions, connectionLogs, updateConnectionLog]);
 
-  // Check if host has multiple protocols enabled
+  // Check if host has multiple protocols enabled (using effective/resolved host)
   const hasMultipleProtocols = useCallback((host: Host) => {
+    const effective = resolveEffectiveHost(host);
     let count = 0;
     // SSH is always available as base protocol (unless explicitly set to something else)
-    if (host.protocol === 'ssh' || !host.protocol) count++;
+    if (effective.protocol === 'ssh' || !effective.protocol) count++;
     // Mosh adds another option
-    if (host.moshEnabled) count++;
+    if (effective.moshEnabled) count++;
     // Telnet adds another option
-    if (host.telnetEnabled) count++;
+    if (effective.telnetEnabled) count++;
     // If protocol is explicitly telnet (not ssh), count it
-    if (host.protocol === 'telnet' && !host.telnetEnabled) count++;
+    if (effective.protocol === 'telnet' && !effective.telnetEnabled) count++;
     return count > 1;
-  }, []);
+  }, [resolveEffectiveHost]);
 
   // Handle host connect with protocol selection (used by QuickSwitcher)
   const handleHostConnectWithProtocolCheck = useCallback((host: Host) => {
     if (hasMultipleProtocols(host)) {
-      setProtocolSelectHost(host);
+      setProtocolSelectHost(resolveEffectiveHost(host));
       setIsQuickSwitcherOpen(false);
       setQuickSearch('');
     } else {
@@ -1119,7 +1285,7 @@ function App({ settings }: { settings: SettingsState }) {
       setIsQuickSwitcherOpen(false);
       setQuickSearch('');
     }
-  }, [hasMultipleProtocols, handleConnectToHost]);
+  }, [hasMultipleProtocols, handleConnectToHost, resolveEffectiveHost]);
 
   // Handle protocol selection from dialog
   const handleProtocolSelect = useCallback((protocol: HostProtocol, port: number) => {
@@ -1210,7 +1376,7 @@ 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", activeTerminalTheme && "immersive-transition")} onContextMenu={handleRootContextMenu}>
       <TopTabs
         theme={resolvedTheme}
         hosts={hosts}
@@ -1231,6 +1397,7 @@ function App({ settings }: { settings: SettingsState }) {
         onToggleTheme={handleToggleTheme}
         onOpenSettings={handleOpenSettings}
         onSyncNow={handleSyncNowManual}
+        isImmersiveActive={activeTerminalTheme !== null}
         onStartSessionDrag={setDraggingSessionId}
         onEndSessionDrag={handleEndSessionDrag}
         onReorderTabs={reorderTabs}
@@ -1252,12 +1419,16 @@ function App({ settings }: { settings: SettingsState }) {
             sessions={sessions}
             hotkeyScheme={hotkeyScheme}
             keyBindings={keyBindings}
+            terminalThemeId={terminalThemeId}
+            terminalFontSize={terminalFontSize}
             onOpenSettings={handleOpenSettings}
             onOpenQuickSwitcher={handleOpenQuickSwitcher}
             onCreateLocalTerminal={handleCreateLocalTerminal}
             onConnectSerial={handleConnectSerial}
             onDeleteHost={handleDeleteHost}
             onConnect={handleConnectToHost}
+            groupConfigs={groupConfigs}
+            onUpdateGroupConfigs={updateGroupConfigs}
             onUpdateHosts={updateHosts}
             onUpdateKeys={updateKeys}
             onUpdateIdentities={updateIdentities}
@@ -1280,10 +1451,26 @@ function App({ settings }: { settings: SettingsState }) {
           />
         </VaultViewContainer>
 
-        <SftpViewMount hosts={hosts} keys={keys} identities={identities} updateHosts={updateHosts} />
+        <SftpViewMount
+          hosts={hosts}
+          keys={keys}
+          identities={identities}
+          groupConfigs={groupConfigs}
+          updateHosts={updateHosts}
+          sftpDefaultViewMode={sftpDefaultViewMode}
+          sftpDoubleClickBehavior={sftpDoubleClickBehavior}
+          sftpAutoSync={sftpAutoSync}
+          sftpShowHiddenFiles={sftpShowHiddenFiles}
+          sftpUseCompressedUpload={sftpUseCompressedUpload}
+          hotkeyScheme={hotkeyScheme}
+          keyBindings={keyBindings}
+          editorWordWrap={editorWordWrap}
+          setEditorWordWrap={setEditorWordWrap}
+        />
 
         <TerminalLayerMount
           hosts={hosts}
+          groupConfigs={groupConfigs}
           keys={keys}
           identities={identities}
           snippets={snippets}
@@ -1302,8 +1489,9 @@ function App({ settings }: { settings: SettingsState }) {
           onUpdateTerminalThemeId={setTerminalThemeId}
           onUpdateTerminalFontFamilyId={setTerminalFontFamilyId}
           onUpdateTerminalFontSize={setTerminalFontSize}
+          onUpdateTerminalFontWeight={(w) => updateTerminalSetting('fontWeight', w)}
           onCloseSession={closeSession}
-          onUpdateSessionStatus={updateSessionStatus}
+          onUpdateSessionStatus={handleSessionStatusChange}
           onUpdateHostDistro={updateHostDistro}
           onUpdateHost={(host) => updateHosts(hosts.map(h => h.id === host.id ? host : h))}
           onAddKnownHost={(kh) => updateKnownHosts([...knownHosts, kh])}
@@ -1321,6 +1509,7 @@ function App({ settings }: { settings: SettingsState }) {
           isBroadcastEnabled={isBroadcastEnabled}
           onToggleBroadcast={toggleBroadcast}
           updateHosts={updateHosts}
+          sftpDefaultViewMode={sftpDefaultViewMode}
           sftpDoubleClickBehavior={sftpDoubleClickBehavior}
           sftpAutoSync={sftpAutoSync}
           sftpShowHiddenFiles={sftpShowHiddenFiles}
@@ -1350,6 +1539,17 @@ function App({ settings }: { settings: SettingsState }) {
         })}
       </div>
 
+      {/* Global "quick add snippet" dialog, triggered by the
+          netcatty:snippets:add window event (from ScriptsSidePanel "+"). */}
+      <QuickAddSnippetDialog
+        snippets={snippets}
+        packages={snippetPackages}
+        onCreateSnippet={(snippet) => updateSnippets([...snippets, snippet])}
+        onCreatePackage={(pkg) =>
+          updateSnippetPackages(Array.from(new Set([...snippetPackages, pkg])))
+        }
+      />
+
       {isQuickSwitcherOpen && (
         <Suspense fallback={null}>
           <LazyQuickSwitcher
@@ -1365,8 +1565,8 @@ function App({ settings }: { settings: SettingsState }) {
               setIsQuickSwitcherOpen(false);
               setQuickSearch('');
             }}
-            onCreateLocalTerminal={() => {
-              handleCreateLocalTerminal();
+            onCreateLocalTerminal={(shell) => {
+              handleCreateLocalTerminal(shell);
               setIsQuickSwitcherOpen(false);
               setQuickSearch('');
             }}

application/i18n/locales/en.ts

@@ -21,6 +21,7 @@ const en: Messages = {
   'common.clear': 'Clear',
   'common.optional': 'Optional',
   'common.selectPlaceholder': 'Select...',
+  'common.add': 'Add',
   'common.rename': 'Rename',
   'common.refresh': 'Refresh',
   'common.continue': 'Continue',
@@ -196,6 +197,9 @@ const en: Messages = {
   'settings.application.github.subtitle': 'Source code',
   'settings.application.whatsNew': "What's new",
   'settings.application.whatsNew.subtitle': 'Show release notes',
+  'settings.vault.title': 'Vault',
+  'settings.vault.showRecentHosts': 'Show recently connected hosts',
+  'settings.vault.showRecentHostsDesc': 'Display a section of recently connected hosts at the top of the vault',
 
   // Update notifications
   'update.available.title': 'Update Available',
@@ -233,9 +237,9 @@ const en: Messages = {
   'settings.appearance.themeColor.dark': 'Dark palette',
   'settings.appearance.customCss': 'Custom CSS',
   'settings.appearance.customCss.desc':
-    'Add custom CSS to personalize the app appearance. Changes apply immediately.',
+    'Add custom CSS to personalize the app appearance. Changes apply immediately. Major UI regions expose a [data-section="..."] attribute you can target — e.g. snippets-panel, host-details-panel, group-details-panel, serial-host-details-panel, ai-chat-panel, vault-sidebar, vault-main, vault-hosts-header, vault-host-list, vault-view, terminal-workspace, terminal-workspace-sidebar, top-tabs.',
   'settings.appearance.customCss.placeholder':
-    '/* Example: */\n.terminal { background: #1a1a2e !important; }\n:root { --radius: 0.25rem; }',
+    '/* Examples — use !important to beat Tailwind utility specificity */\n\n/* Make snippet sidebar text larger */\n[data-section="snippets-panel"] {\n  font-size: 14px !important;\n}\n\n/* Custom terminal background */\n.terminal { background: #1a1a2e !important; }\n\n/* Tweak global border radius */\n:root { --radius: 0.25rem; }',
   'settings.appearance.language': 'Language',
   'settings.appearance.language.desc': 'Choose the UI language',
   'settings.appearance.uiFont': 'Interface Font',
@@ -311,6 +315,9 @@ 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)',
@@ -321,6 +328,14 @@ const en: Messages = {
   'settings.terminal.scrollback.rows': 'Number of rows *',
   'settings.terminal.keywordHighlight.title': 'Keyword highlighting',
   'settings.terminal.keywordHighlight.resetColors': 'Reset to default colors',
+  'settings.terminal.keywordHighlight.addCustom': 'Add Custom Rule',
+  'settings.terminal.keywordHighlight.editCustom': 'Edit Rule',
+  'settings.terminal.keywordHighlight.labelField': 'Label & Color',
+  'settings.terminal.keywordHighlight.labelPlaceholder': 'Label (e.g., Down)',
+  'settings.terminal.keywordHighlight.patternField': 'Regex Pattern',
+  'settings.terminal.keywordHighlight.patternPlaceholder': 'Regex (e.g., \\bdown\\b)',
+  'settings.terminal.keywordHighlight.invalidPattern': 'Invalid regex pattern',
+  'settings.terminal.keywordHighlight.preview': 'Preview',
   'settings.terminal.section.localShell': 'Local Shell',
   'settings.terminal.localShell.shell': 'Shell executable',
   'settings.terminal.localShell.shell.desc': 'Path to the shell executable (e.g., /bin/zsh, pwsh.exe). Leave empty for system default.',
@@ -328,6 +343,11 @@ const en: Messages = {
   'settings.terminal.localShell.shell.detected': 'Detected',
   'settings.terminal.localShell.shell.notFound': 'Shell executable not found',
   'settings.terminal.localShell.shell.isDirectory': 'Path is a directory, not an executable',
+  'settings.terminal.localShell.shell.default': 'System Default',
+  'settings.terminal.localShell.shell.custom': 'Custom...',
+  'settings.terminal.localShell.shell.customPath': 'Shell executable path',
+  'settings.terminal.localShell.shell.commonPaths': 'Common paths',
+  'settings.terminal.localShell.shell.pathValid': 'Path valid',
   'settings.terminal.localShell.startDir': 'Starting directory',
   'settings.terminal.localShell.startDir.desc': 'Directory to start in when opening a local terminal. Leave empty for home directory.',
   'settings.terminal.localShell.startDir.placeholder': 'Home directory',
@@ -346,9 +366,25 @@ const en: Messages = {
   // Settings > Terminal > Rendering
   'settings.terminal.section.rendering': 'Rendering',
   'settings.terminal.rendering.renderer': 'Renderer',
-  '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.renderer.desc': 'Choose the terminal rendering technology. Auto will use DOM on low-memory devices. Changes take effect on new terminal sessions.',
   'settings.terminal.rendering.auto': 'Auto',
 
+  // Settings > Terminal > Workspace Focus Indicator
+  'settings.terminal.section.workspaceFocus': 'Workspace Focus Indicator',
+  'settings.terminal.workspaceFocus.style': 'Focus indicator style',
+  'settings.terminal.workspaceFocus.style.desc': 'How to indicate which pane is focused in split view.',
+  'settings.terminal.workspaceFocus.dim': 'Dim unfocused panes',
+  'settings.terminal.workspaceFocus.border': 'Border on focused pane',
+
+  // 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',
@@ -439,8 +475,24 @@ const en: Messages = {
   'vault.groups.placeholder.example': 'e.g. Production',
   'vault.groups.parentLabel': 'Parent',
   'vault.groups.pathLabel': 'Path',
+  'vault.groups.settings': 'Group Settings',
+  'vault.groups.details': 'Group Details',
+  'vault.groups.details.general': 'General',
+  'vault.groups.details.ssh': 'SSH',
+  'vault.groups.details.telnet': 'Telnet',
+  'vault.groups.details.advanced': 'Advanced',
+  'vault.groups.details.appearance': 'Appearance',
+  'vault.groups.details.mosh': 'Mosh',
+  'vault.groups.details.parentGroup': 'Parent Group',
+  'vault.groups.details.none': 'None',
+  'vault.groups.details.inherited': 'Inherited from group',
+  'vault.groups.details.addProtocol': 'Add Protocol',
+  'vault.groups.details.removeProtocol': 'Remove Protocol',
+  'vault.groups.details.fontFamily': 'Font Family',
+  'vault.groups.details.fontSize': 'Font Size',
   'vault.groups.errors.required': 'Group name is required.',
   'vault.groups.errors.invalidChars': "Group name cannot include '/' or '\\\\'.",
+  'vault.groups.errors.duplicatePath': 'A group with this name already exists at this location.',
 
   'vault.managedSource.unmanage': 'Unmanage',
   'vault.managedSource.unmanageSuccess': 'Successfully unmanaged group',
@@ -464,6 +516,10 @@ const en: Messages = {
   'vault.hosts.export.toast.successWithSkipped': 'Exported {count} hosts to CSV ({skipped} unsupported hosts skipped)',
   'vault.hosts.export.toast.noHosts': 'No hosts to export',
   'vault.hosts.allHosts': 'All hosts',
+  'vault.hosts.pinned': 'Pinned',
+  'vault.hosts.recentlyConnected': 'Recently Connected',
+  'vault.hosts.pinToTop': 'Pin to Top',
+  'vault.hosts.unpin': 'Unpin',
   'vault.hosts.copyCredentials': 'Copy Credentials',
   'vault.hosts.copyCredentials.toast.success': 'Credentials copied to clipboard',
   'vault.hosts.copyCredentials.toast.noPassword': 'No password saved for this host',
@@ -473,6 +529,7 @@ const en: Messages = {
   'vault.hosts.deselectAll': 'Deselect All',
   'vault.hosts.deleteSelected': 'Delete ({count})',
   'vault.hosts.deleteMultiple.success': 'Deleted {count} hosts',
+  'vault.hosts.moveToGroup.success': 'Moved {host} to {group}',
   'vault.hosts.empty.title': 'Set up your hosts',
   'vault.hosts.empty.desc': 'Save hosts to quickly connect to your servers, VMs, and containers.',
 
@@ -598,6 +655,8 @@ 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',
@@ -614,8 +673,21 @@ const en: Messages = {
   'sftp.dragDropToUpload': 'Drag and drop files here to upload',
   'sftp.retry': 'Retry',
   'sftp.context.open': 'Open',
+  'sftp.context.navigateTo': 'Navigate to',
+  'sftp.context.moveTo': 'Move to...',
+  'sftp.context.moveToParent': 'Move to parent directory',
+  'sftp.moveTo.title': 'Move to directory',
+  'sftp.moveTo.placeholder': 'Enter target directory path',
+  'sftp.moveTo.confirm': 'Move',
+  'sftp.moveTo.pathNotFound': 'Directory not found or inaccessible',
   'sftp.context.download': 'Download',
   'sftp.context.copyToOtherPane': 'Copy to other pane',
+  'sftp.viewMode.label': 'View mode',
+  'sftp.viewMode.list': 'List view',
+  'sftp.viewMode.tree': 'Tree view',
+  'sftp.tree.loadError': 'Failed to load directory',
+  'sftp.tree.loading': 'Loading...',
+  'sftp.kind.folder': 'Folder',
   'sftp.context.rename': 'Rename',
   'sftp.context.permissions': 'Permissions',
   'sftp.context.delete': 'Delete',
@@ -636,6 +708,13 @@ const en: Messages = {
   'sftp.transfers.active': '{count} active',
   'sftp.transfers.clearCompleted': 'Clear completed',
   'sftp.transfers.calculatingTotal': 'Calculating total size...',
+  'sftp.transfers.filesCount': '{count} files',
+  'sftp.transfers.filesProgress': '{current}/{total} files',
+  'sftp.transfers.expandChildren': 'Show files',
+  'sftp.transfers.collapseChildren': 'Hide files',
+  'sftp.transfers.expandChildList': 'Show detail',
+  'sftp.transfers.collapseChildList': 'Hide',
+  'sftp.transfers.dragToResize': 'Drag to resize',
   'sftp.goUp': 'Go up',
   'sftp.goToTerminalCwd': 'Go to terminal directory',
   'sftp.encoding.label': 'Filename Encoding',
@@ -655,6 +734,9 @@ const en: Messages = {
   'sftp.deleteConfirm.single': 'Delete "{name}"?',
   'sftp.deleteConfirm.title': 'Delete {count} item(s)?',
   'sftp.deleteConfirm.desc': 'This action cannot be undone. The following will be deleted:',
+  'sftp.deleteConfirm.descSingle': 'This action cannot be undone.',
+  'sftp.deleteConfirm.host': 'Host',
+  'sftp.deleteConfirm.path': 'Path',
   'sftp.error.loadFailed': 'Failed to load directory',
   'sftp.error.downloadFailed': 'Download failed',
   'sftp.error.uploadFailed': 'Upload failed',
@@ -709,6 +791,7 @@ 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',
@@ -745,6 +828,15 @@ const en: Messages = {
 
   // Settings > SFTP File Associations
   'settings.tab.sftpFileAssociations': 'SFTP',
+  'settings.sftp.transferConcurrency': 'Transfer Concurrency',
+  'settings.sftp.transferConcurrency.desc': 'Number of files to transfer in parallel when uploading or downloading folders. Higher values may improve speed but can overwhelm some servers.',
+  'settings.sftp.defaultOpener': 'Default File Opener',
+  'settings.sftp.defaultOpener.desc': 'Choose the default application for opening files without a specific file association',
+  'settings.sftp.defaultOpener.ask': 'Always ask',
+  'settings.sftp.defaultOpener.askDesc': 'Show a dialog to choose an application each time',
+  'settings.sftp.defaultOpener.builtInDesc': 'Open text files in the built-in editor by default',
+  'settings.sftp.defaultOpener.systemApp': 'Choose Application...',
+  'settings.sftp.defaultOpener.systemAppDesc': 'Open files with a specific application by default',
   'settings.sftpFileAssociations.title': 'SFTP File Associations',
   'settings.sftpFileAssociations.desc': 'Configure default applications for opening files by extension',
   'settings.sftpFileAssociations.extension': 'Extension',
@@ -773,6 +865,13 @@ const en: Messages = {
   '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',
 
+  'settings.sftp.defaultViewMode': 'Default View Mode',
+  'settings.sftp.defaultViewMode.desc': 'Choose the default view mode when opening a new SFTP tab. Per-host preferences override this setting.',
+  'settings.sftp.defaultViewMode.list': 'List View',
+  'settings.sftp.defaultViewMode.listDesc': 'Display files in a flat list for the current directory',
+  'settings.sftp.defaultViewMode.tree': 'Tree View',
+  'settings.sftp.defaultViewMode.treeDesc': 'Display files in a hierarchical tree structure',
+
   'sftp.autoSync.success': 'File synced to remote: {fileName}',
   'sftp.autoSync.error': 'Failed to sync file: {error}',
 
@@ -818,6 +917,8 @@ const en: Messages = {
   'qs.search.placeholder': 'Search hosts or tabs',
   'qs.jumpTo': 'Jump To',
   'qs.localTerminal': 'Local Terminal',
+  'qs.localShells': 'Local Shells',
+  'qs.default': 'Default',
 
   // Select Host panel
   'selectHost.title': 'Select Host',
@@ -891,9 +992,12 @@ 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',
@@ -904,10 +1008,16 @@ const en: Messages = {
   '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.',
   'hostDetails.legacyAlgorithms.warning': 'These algorithms have known security weaknesses. Only enable for legacy devices that do not support modern cryptography.',
+  'hostDetails.backspaceBehavior': 'Backspace Behavior',
+  'hostDetails.backspaceBehavior.default': 'Default',
   'hostDetails.jumpHosts': 'Proxy via Hosts',
   'hostDetails.jumpHosts.hops': '{count} hop(s)',
   'hostDetails.jumpHosts.direct': 'Direct',
@@ -1115,6 +1225,7 @@ const en: Messages = {
   'terminal.themeModal.globalTheme': 'Global Theme',
   'terminal.themeModal.globalFont': 'Global Font',
   'terminal.themeModal.fontSize': 'Font Size',
+  'terminal.themeModal.fontWeight': 'Font Weight',
   'terminal.themeModal.livePreview': 'Live Preview',
   'terminal.themeModal.themeType': '{type} theme',
 
@@ -1512,6 +1623,7 @@ 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',
@@ -1532,10 +1644,7 @@ const en: Messages = {
   'keyboard.interactive.enterResponse': 'Enter response',
   'keyboard.interactive.submit': 'Submit',
   'keyboard.interactive.verifying': 'Verifying...',
-  'keyboard.interactive.fill': 'Fill',
-  'keyboard.interactive.fillSaved': 'Fill with saved password',
-  'keyboard.interactive.useSaved': 'Use saved',
-  'keyboard.interactive.useSavedPassword': 'Use saved password',
+  'keyboard.interactive.savePassword': 'Save password',
 
   // Passphrase Modal for encrypted SSH keys
   'passphrase.title': 'SSH Key Passphrase',
@@ -1578,6 +1687,10 @@ const en: Messages = {
   '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',
@@ -1611,6 +1724,17 @@ const en: Messages = {
   'ai.claude.customPathPlaceholder': 'e.g. /usr/local/bin/claude',
   'ai.claude.check': 'Check',
 
+  // AI GitHub Copilot CLI
+  'ai.copilot.title': 'GitHub Copilot CLI',
+  'ai.copilot.description': 'Uses GitHub Copilot CLI via ACP over stdio (`copilot --acp --stdio`). Once detected, it can be selected as an external coding agent.',
+  'ai.copilot.detecting': 'Detecting...',
+  'ai.copilot.detected': 'Detected',
+  'ai.copilot.notFound': 'Not found',
+  'ai.copilot.path': 'Path:',
+  'ai.copilot.notFoundHint': 'Could not find copilot in PATH. Install it or specify the executable path below.',
+  'ai.copilot.customPathPlaceholder': 'e.g. /usr/local/bin/copilot',
+  'ai.copilot.check': 'Check',
+
   // AI Default Agent
   'ai.defaultAgent': 'Default Agent',
   'ai.defaultAgent.description': 'Agent to use when starting a new AI session',

application/i18n/locales/zh-CN.ts

@@ -13,6 +13,7 @@ const zhCN: Messages = {
   'common.connect': '连接',
   'common.terminal': '终端',
   'common.create': '创建',
+  'common.add': '添加',
   'common.rename': '重命名',
   'common.refresh': '刷新',
   'common.continue': '继续',
@@ -180,6 +181,9 @@ const zhCN: Messages = {
   'settings.application.github.subtitle': '源代码',
   'settings.application.whatsNew': '更新内容',
   'settings.application.whatsNew.subtitle': '查看发布说明',
+  'settings.vault.title': '主机库',
+  'settings.vault.showRecentHosts': '显示最近连接的主机',
+  'settings.vault.showRecentHostsDesc': '在主机列表顶部显示最近连接过的主机',
 
   // Update notifications
   'update.available.title': '发现新版本',
@@ -216,9 +220,10 @@ const zhCN: Messages = {
   'settings.appearance.themeColor.light': '浅色主题',
   'settings.appearance.themeColor.dark': '深色主题',
   '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.desc':
+    '使用自定义 CSS 个性化界面，修改会立即生效。主要 UI 区块都暴露了 [data-section="..."] 属性供你定位，比如：snippets-panel、host-details-panel、group-details-panel、serial-host-details-panel、ai-chat-panel、vault-sidebar、vault-main、vault-hosts-header、vault-host-list、vault-view、terminal-workspace、terminal-workspace-sidebar、top-tabs。',
   'settings.appearance.customCss.placeholder':
-    '/* 示例：*/\n.terminal { background: #1a1a2e !important; }\n:root { --radius: 0.25rem; }',
+    '/* 示例 — 由于 Tailwind 优先级较高，需要使用 !important */\n\n/* 放大代码片段侧边栏字号 */\n[data-section="snippets-panel"] {\n  font-size: 14px !important;\n}\n\n/* 自定义终端背景色 */\n.terminal { background: #1a1a2e !important; }\n\n/* 调整全局圆角 */\n:root { --radius: 0.25rem; }',
   'settings.appearance.language': '语言',
   'settings.appearance.language.desc': '选择界面语言',
   'settings.appearance.uiFont': '界面字体',
@@ -291,8 +296,24 @@ const zhCN: Messages = {
   'vault.groups.placeholder.example': '例如：Production',
   'vault.groups.parentLabel': '父级',
   'vault.groups.pathLabel': '路径',
+  'vault.groups.settings': '分组设置',
+  'vault.groups.details': '分组详情',
+  'vault.groups.details.general': '常规',
+  'vault.groups.details.ssh': 'SSH',
+  'vault.groups.details.telnet': 'Telnet',
+  'vault.groups.details.advanced': '高级',
+  'vault.groups.details.appearance': '外观',
+  'vault.groups.details.mosh': 'Mosh',
+  'vault.groups.details.parentGroup': '父分组',
+  'vault.groups.details.none': '无',
+  'vault.groups.details.inherited': '继承自分组',
+  'vault.groups.details.addProtocol': '添加协议',
+  'vault.groups.details.removeProtocol': '移除协议',
+  'vault.groups.details.fontFamily': '字体',
+  'vault.groups.details.fontSize': '字号',
   'vault.groups.errors.required': '分组名称不能为空。',
   'vault.groups.errors.invalidChars': "分组名称不能包含 '/' 或 '\\\\'.",
+  'vault.groups.errors.duplicatePath': '该位置已存在同名分组。',
 
   'vault.managedSource.unmanage': '取消托管',
   'vault.managedSource.unmanageSuccess': '已取消托管分组',
@@ -316,6 +337,10 @@ const zhCN: Messages = {
   'vault.hosts.export.toast.successWithSkipped': '已导出 {count} 个主机到 CSV（跳过 {skipped} 个不支持的主机）',
   'vault.hosts.export.toast.noHosts': '没有主机可导出',
   'vault.hosts.allHosts': '全部主机',
+  'vault.hosts.pinned': '已置顶',
+  'vault.hosts.recentlyConnected': '最近连接',
+  'vault.hosts.pinToTop': '置顶',
+  'vault.hosts.unpin': '取消置顶',
   'vault.hosts.copyCredentials': '复制账密信息',
   'vault.hosts.copyCredentials.toast.success': '账密信息已复制到剪贴板',
   'vault.hosts.copyCredentials.toast.noPassword': '该主机未保存密码',
@@ -325,6 +350,7 @@ const zhCN: Messages = {
   'vault.hosts.deselectAll': '取消全选',
   'vault.hosts.deleteSelected': '删除 ({count})',
   'vault.hosts.deleteMultiple.success': '已删除 {count} 个主机',
+  'vault.hosts.moveToGroup.success': '已将 {host} 移动到 {group}',
   'vault.hosts.empty.title': '设置你的主机',
   'vault.hosts.empty.desc': '保存主机以快速连接到你的服务器、虚拟机和容器。',
 
@@ -425,6 +451,8 @@ 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',
@@ -441,8 +469,21 @@ const zhCN: Messages = {
   'sftp.dragDropToUpload': '拖拽文件到这里上传',
   'sftp.retry': '重试',
   'sftp.context.open': '打开',
+  'sftp.context.navigateTo': '跳转到这里',
+  'sftp.context.moveTo': '移动到...',
+  'sftp.context.moveToParent': '移动到上级目录',
+  'sftp.moveTo.title': '移动到目录',
+  'sftp.moveTo.placeholder': '输入目标目录路径',
+  'sftp.moveTo.confirm': '移动',
+  'sftp.moveTo.pathNotFound': '目录不存在或无法访问',
   'sftp.context.download': '下载',
   'sftp.context.copyToOtherPane': '复制到另一侧',
+  'sftp.viewMode.label': '视图模式',
+  'sftp.viewMode.list': '列表视图',
+  'sftp.viewMode.tree': '树形视图',
+  'sftp.tree.loadError': '加载目录失败',
+  'sftp.tree.loading': '加载中...',
+  'sftp.kind.folder': '文件夹',
   'sftp.context.rename': '重命名',
   'sftp.context.permissions': '权限',
   'sftp.context.delete': '删除',
@@ -463,6 +504,13 @@ const zhCN: Messages = {
   '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.transfers.filesCount': '{count} 个文件',
+  'sftp.transfers.filesProgress': '{current}/{total} 个文件',
+  'sftp.transfers.expandChildren': '展开文件',
+  'sftp.transfers.collapseChildren': '收起文件',
+  'sftp.transfers.expandChildList': '展开详情',
+  'sftp.transfers.collapseChildList': '收起',
+  'sftp.transfers.dragToResize': '拖拽调整高度',
   'sftp.goUp': '上一级',
   'sftp.goToTerminalCwd': '定位到终端当前目录',
   'sftp.encoding.label': '文件名编码',
@@ -482,6 +530,9 @@ const zhCN: Messages = {
   'sftp.deleteConfirm.single': '删除 "{name}"？',
   'sftp.deleteConfirm.title': '删除 {count} 个项目？',
   'sftp.deleteConfirm.desc': '此操作不可撤销，将删除以下内容：',
+  'sftp.deleteConfirm.descSingle': '此操作不可撤销。',
+  'sftp.deleteConfirm.host': '主机',
+  'sftp.deleteConfirm.path': '路径',
   'sftp.error.loadFailed': '加载目录失败',
   'sftp.error.downloadFailed': '下载失败',
   'sftp.error.uploadFailed': '上传失败',
@@ -514,6 +565,8 @@ const zhCN: Messages = {
   'qs.search.placeholder': '搜索主机或标签页',
   'qs.jumpTo': '跳转到',
   'qs.localTerminal': '本地终端',
+  'qs.localShells': '本地 Shell',
+  'qs.default': '默认',
 
   // Select Host panel
   'selectHost.title': '选择主机',
@@ -583,9 +636,12 @@ 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',
@@ -596,10 +652,16 @@ const zhCN: Messages = {
   '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。',
   'hostDetails.legacyAlgorithms.warning': '这些算法存在已知安全漏洞，仅建议在老旧设备不支持现代加密时启用。',
+  'hostDetails.backspaceBehavior': 'Backspace 行为',
+  'hostDetails.backspaceBehavior.default': '默认',
   'hostDetails.jumpHosts': '通过主机代理',
   'hostDetails.jumpHosts.hops': '{count} 跳',
   'hostDetails.jumpHosts.direct': '直连',
@@ -779,6 +841,7 @@ const zhCN: Messages = {
   'terminal.themeModal.globalTheme': '全局主题',
   'terminal.themeModal.globalFont': '全局字体',
   'terminal.themeModal.fontSize': '字体大小',
+  'terminal.themeModal.fontWeight': '字体粗细',
   'terminal.themeModal.livePreview': '实时预览',
   'terminal.themeModal.themeType': '{type} 主题',
 
@@ -1050,6 +1113,7 @@ 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',
@@ -1086,6 +1150,15 @@ const zhCN: Messages = {
 
   // Settings > SFTP File Associations
   'settings.tab.sftpFileAssociations': 'SFTP',
+  'settings.sftp.transferConcurrency': '传输并发数',
+  'settings.sftp.transferConcurrency.desc': '上传或下载文件夹时并行传输的文件数量。较高的值可能提高速度，但可能导致某些服务器过载。',
+  'settings.sftp.defaultOpener': '默认文件打开方式',
+  'settings.sftp.defaultOpener.desc': '选择没有特定文件关联时的默认打开方式',
+  'settings.sftp.defaultOpener.ask': '每次询问',
+  'settings.sftp.defaultOpener.askDesc': '每次打开文件时弹出选择对话框',
+  'settings.sftp.defaultOpener.builtInDesc': '默认使用内置编辑器打开文本文件',
+  'settings.sftp.defaultOpener.systemApp': '选择应用程序...',
+  'settings.sftp.defaultOpener.systemAppDesc': '默认使用指定的外部应用程序打开文件',
   'settings.sftpFileAssociations.title': 'SFTP 文件关联',
   'settings.sftpFileAssociations.desc': '配置按扩展名打开文件的默认应用程序',
   'settings.sftpFileAssociations.extension': '扩展名',
@@ -1114,6 +1187,13 @@ const zhCN: Messages = {
   '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',
 
+  'settings.sftp.defaultViewMode': '默认视图模式',
+  'settings.sftp.defaultViewMode.desc': '选择打开新 SFTP 标签页时的默认视图模式。每个主机的偏好设置会覆盖此全局设置。',
+  'settings.sftp.defaultViewMode.list': '列表视图',
+  'settings.sftp.defaultViewMode.listDesc': '以平面列表显示当前目录的文件',
+  'settings.sftp.defaultViewMode.tree': '树形视图',
+  'settings.sftp.defaultViewMode.treeDesc': '以层级树形结构显示文件',
+
   'sftp.autoSync.success': '文件已同步到远程：{fileName}',
   'sftp.autoSync.error': '同步文件失败：{error}',
 
@@ -1219,6 +1299,8 @@ 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）',
@@ -1229,6 +1311,14 @@ const zhCN: Messages = {
   'settings.terminal.scrollback.rows': '行数 *',
   'settings.terminal.keywordHighlight.title': '关键字高亮',
   'settings.terminal.keywordHighlight.resetColors': '重置为默认颜色',
+  'settings.terminal.keywordHighlight.addCustom': '添加自定义规则',
+  'settings.terminal.keywordHighlight.editCustom': '编辑规则',
+  'settings.terminal.keywordHighlight.labelField': '标签与颜色',
+  'settings.terminal.keywordHighlight.labelPlaceholder': '标签（如 Down）',
+  'settings.terminal.keywordHighlight.patternField': '正则表达式',
+  'settings.terminal.keywordHighlight.patternPlaceholder': '正则表达式（如 \\bdown\\b）',
+  'settings.terminal.keywordHighlight.invalidPattern': '无效的正则表达式',
+  'settings.terminal.keywordHighlight.preview': '预览',
   'settings.terminal.section.localShell': '本地 Shell',
   'settings.terminal.localShell.shell': 'Shell 可执行文件',
   'settings.terminal.localShell.shell.desc': 'Shell 可执行文件的路径（例如 /bin/zsh、pwsh.exe）。留空使用系统默认。',
@@ -1236,6 +1326,11 @@ const zhCN: Messages = {
   'settings.terminal.localShell.shell.detected': '检测到',
   'settings.terminal.localShell.shell.notFound': '未找到 Shell 可执行文件',
   'settings.terminal.localShell.shell.isDirectory': '路径是目录，不是可执行文件',
+  'settings.terminal.localShell.shell.default': '系统默认',
+  'settings.terminal.localShell.shell.custom': '自定义...',
+  'settings.terminal.localShell.shell.customPath': 'Shell 可执行文件路径',
+  'settings.terminal.localShell.shell.commonPaths': '常用路径',
+  'settings.terminal.localShell.shell.pathValid': '路径有效',
   'settings.terminal.localShell.startDir': '起始目录',
   'settings.terminal.localShell.startDir.desc': '打开本地终端时的起始目录。留空使用用户主目录。',
   'settings.terminal.localShell.startDir.placeholder': '用户主目录',
@@ -1254,9 +1349,18 @@ const zhCN: Messages = {
   // Settings > Terminal > Rendering
   'settings.terminal.section.rendering': '渲染',
   'settings.terminal.rendering.renderer': '渲染器',
-  '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.renderer.desc': '选择终端渲染技术。自动模式会在低内存设备上使用 DOM 渲染。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',
@@ -1527,6 +1631,7 @@ 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',
@@ -1547,10 +1652,7 @@ const zhCN: Messages = {
   'keyboard.interactive.enterResponse': '输入响应',
   'keyboard.interactive.submit': '提交',
   'keyboard.interactive.verifying': '验证中...',
-  'keyboard.interactive.fill': '填入',
-  'keyboard.interactive.fillSaved': '填入已保存的密码',
-  'keyboard.interactive.useSaved': '使用已保存',
-  'keyboard.interactive.useSavedPassword': '使用已保存的密码',
+  'keyboard.interactive.savePassword': '保存密码',
 
   // Passphrase Modal for encrypted SSH keys
   'passphrase.title': 'SSH 密钥密码',
@@ -1593,6 +1695,10 @@ const zhCN: Messages = {
   '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',
@@ -1626,6 +1732,17 @@ const zhCN: Messages = {
   'ai.claude.customPathPlaceholder': '例如 /usr/local/bin/claude',
   'ai.claude.check': '检查',
 
+  // AI GitHub Copilot CLI
+  'ai.copilot.title': 'GitHub Copilot CLI',
+  'ai.copilot.description': '通过 ACP over stdio（`copilot --acp --stdio`）接入 GitHub Copilot CLI。检测到后即可作为外部编程 Agent 使用。',
+  'ai.copilot.detecting': '检测中...',
+  'ai.copilot.detected': '已检测到',
+  'ai.copilot.notFound': '未找到',
+  'ai.copilot.path': '路径：',
+  'ai.copilot.notFoundHint': '在 PATH 中未找到 copilot。请安装或在下方指定可执行文件路径。',
+  'ai.copilot.customPathPlaceholder': '例如 /usr/local/bin/copilot',
+  'ai.copilot.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',

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/fontStore.ts

@@ -68,8 +68,14 @@ class FontStore {
       // Add default fonts first
       TERMINAL_FONTS.forEach(font => fontMap.set(font.id, font));
 
-      // Add local fonts with a distinct ID namespace to avoid collisions
+      // Build a set of built-in font family names for dedup (case-insensitive)
+      const builtinFamilyNames = new Set(
+        TERMINAL_FONTS.map(f => f.name.toLowerCase())
+      );
+
+      // Add local fonts, skipping those already covered by built-in fonts
       localFonts.forEach(font => {
+        if (builtinFamilyNames.has(font.name.toLowerCase())) return;
         const localId = font.id.startsWith('local-') ? font.id : `local-${font.id}`;
         fontMap.set(localId, { ...font, id: localId });
       });

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

@@ -7,10 +7,12 @@ export interface SftpPane {
   loading: boolean;
   reconnecting: boolean;
   error: string | null;
+  connectionLogs: string[];
   selectedFiles: Set<string>;
   filter: string;
   filenameEncoding: SftpFilenameEncoding;
   showHiddenFiles: boolean;
+  transferMutationToken: number;
 }
 
 // Multi-tab state for left and right sides
@@ -33,10 +35,12 @@ export const createEmptyPane = (
   loading: false,
   reconnecting: false,
   error: null,
+  connectionLogs: [],
   selectedFiles: new Set(),
   filter: "",
   filenameEncoding: "auto",
   showHiddenFiles,
+  transferMutationToken: 0,
 });
 
 // File watch event types

application/state/sftp/useSftpConnections.ts

@@ -88,6 +88,8 @@ export const useSftpConnections = ({
 
       if (!activeTabId) return;
 
+      const isReconnectAttempt = reconnectingRef.current[side];
+
       // 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.
@@ -159,6 +161,7 @@ export const useSftpConnections = ({
           loading: true,
           reconnecting: false,
           error: null,
+          connectionLogs: [],
           filenameEncoding, // Reset encoding for new connection
         }));
 
@@ -213,13 +216,57 @@ 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");
 
@@ -407,6 +454,7 @@ 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;
@@ -420,10 +468,16 @@ export const useSftpConnections = ({
                   error: err instanceof Error ? err.message : "Connection failed",
                 }
               : null,
-            error: err instanceof Error ? err.message : "Connection failed",
+            files: isReconnectAttempt ? [] : prev.files,
+            selectedFiles: isReconnectAttempt ? new Set<string>() : prev.selectedFiles,
+            error: isReconnectAttempt
+              ? "sftp.error.reconnectFailed"
+              : (err instanceof Error ? err.message : "Connection failed"),
             loading: false,
             reconnecting: false,
           }));
+        } finally {
+          unsubSftpProgress?.();
         }
       }
     },
@@ -448,32 +502,39 @@ 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

@@ -45,7 +45,8 @@ interface SftpExternalOperationsResult {
   activeFileWatchCountRef: React.MutableRefObject<number>;
   uploadExternalFiles: (
     side: "left" | "right",
-    dataTransfer: DataTransfer
+    dataTransfer: DataTransfer,
+    targetPath?: string
   ) => Promise<UploadResult[]>;
   uploadExternalEntries: (
     side: "left" | "right",
@@ -377,6 +378,7 @@ export const useSftpExternalOperations = (
             speed: 0,
             startTime: Date.now(),
             isDirectory: true,
+            progressMode: "bytes",
           };
           addExternalUpload(scanningTask);
         }
@@ -404,6 +406,8 @@ export const useSftpExternalOperations = (
             speed: 0,
             startTime: Date.now(),
             isDirectory: task.isDirectory,
+            progressMode: task.progressMode ?? "bytes",
+            parentTaskId: task.parentTaskId,
           };
           addExternalUpload(transferTask);
         }
@@ -505,7 +509,7 @@ export const useSftpExternalOperations = (
   }, []);
 
   const uploadExternalFiles = useCallback(
-    async (side: "left" | "right", dataTransfer: DataTransfer): Promise<UploadResult[]> => {
+    async (side: "left" | "right", dataTransfer: DataTransfer, targetPath?: string): Promise<UploadResult[]> => {
       const pane = getActivePane(side);
       if (!pane?.connection) {
         throw new Error("No active connection");
@@ -525,13 +529,14 @@ export const useSftpExternalOperations = (
       }
 
       const uploadPaneId = pane.id;
+      const uploadTargetPath = targetPath || pane.connection.currentPath;
       // Create a new upload controller for this upload
       const controller = new UploadController();
       uploadControllerRef.current = controller;
 
       const callbacks = createUploadCallbacks(
         pane.connection.id,
-        pane.connection.currentPath,
+        uploadTargetPath,
         pane.connection.isLocal ? undefined : pane.connection.hostId,
         pane.connection.isLocal ? undefined : connectionCacheKeyMapRef.current.get(pane.connection.id),
       );
@@ -540,7 +545,7 @@ export const useSftpExternalOperations = (
         const results = await uploadFromDataTransfer(
           dataTransfer,
           {
-            targetPath: pane.connection.currentPath,
+            targetPath: uploadTargetPath,
             sftpId,
             isLocal: pane.connection.isLocal,
             bridge: createUploadBridge,
@@ -551,7 +556,14 @@ export const useSftpExternalOperations = (
           controller
         );
 
-        await refresh(side, { tabId: uploadPaneId });
+        // Invalidate cache for the upload target so returning to that path
+        // triggers a fresh listing.
+        if (clearDirCacheEntry && targetPath) {
+          clearDirCacheEntry(pane.connection.id, uploadTargetPath);
+        }
+        if (uploadTargetPath === pane.connection.currentPath) {
+          await refresh(side, { tabId: uploadPaneId });
+        }
         return results;
       } catch (error) {
         logger.error("[SFTP] Upload failed:", error);
@@ -561,6 +573,7 @@ export const useSftpExternalOperations = (
       }
     },
     [
+      clearDirCacheEntry,
       connectionCacheKeyMapRef,
       getActivePane,
       refresh,
@@ -634,7 +647,9 @@ export const useSftpExternalOperations = (
         if (clearDirCacheEntry) {
           clearDirCacheEntry(pane.connection.id, uploadTargetPath);
         }
-        await refresh(side, { tabId: uploadPaneId });
+        if (uploadTargetPath === pane.connection.currentPath) {
+          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

@@ -3,9 +3,12 @@ import type { Host, SftpFileEntry, SftpFilenameEncoding } from "../../../domain/
 import { netcattyBridge } from "../../../infrastructure/services/netcattyBridge";
 import { logger } from "../../../lib/logger";
 import { SftpPane } from "./types";
-import { getParentPath, isNavigableDirectory, isWindowsRoot, joinPath } from "./utils";
+import { getFileName, getParentPath, isNavigableDirectory, isWindowsRoot, joinPath } from "./utils";
 import { buildCacheKey, setSharedRemoteHostCache } from "./sharedRemoteHostCache";
 
+/** Shared empty set for navigation resets — never mutate this. */
+const EMPTY_SET = new Set<string>();
+
 interface UseSftpPaneActionsParams {
   hosts: Host[];
   getActivePane: (side: "left" | "right") => SftpPane | null;
@@ -25,6 +28,7 @@ interface UseSftpPaneActionsParams {
   listRemoteFiles: (sftpId: string, path: string, encoding?: SftpFilenameEncoding) => Promise<SftpFileEntry[]>;
   handleSessionError: (side: "left" | "right", error: Error) => void;
   isSessionError: (err: unknown) => boolean;
+  clearSelectionsExcept: (target: { side: "left" | "right"; tabId: string } | null) => void;
   dirCacheTtlMs: number;
 }
 
@@ -40,7 +44,9 @@ interface UseSftpPaneActionsResult {
   setFilter: (side: "left" | "right", filter: string) => void;
   getFilteredFiles: (pane: SftpPane) => SftpFileEntry[];
   createDirectory: (side: "left" | "right", name: string) => Promise<void>;
+  createDirectoryAtPath: (side: "left" | "right", path: string, name: string) => Promise<void>;
   createFile: (side: "left" | "right", name: string) => Promise<void>;
+  createFileAtPath: (side: "left" | "right", path: string, name: string) => Promise<void>;
   deleteFiles: (side: "left" | "right", fileNames: string[]) => Promise<void>;
   deleteFilesAtPath: (
     side: "left" | "right",
@@ -49,6 +55,8 @@ interface UseSftpPaneActionsResult {
     fileNames: string[],
   ) => Promise<void>;
   renameFile: (side: "left" | "right", oldName: string, newName: string) => Promise<void>;
+  renameFileAtPath: (side: "left" | "right", oldPath: string, newName: string) => Promise<void>;
+  moveEntriesToPath: (side: "left" | "right", sourcePaths: string[], targetPath: string) => Promise<void>;
   changePermissions: (side: "left" | "right", filePath: string, mode: string) => Promise<void>;
 }
 
@@ -71,8 +79,39 @@ export const useSftpPaneActions = ({
   listRemoteFiles,
   handleSessionError,
   isSessionError,
+  clearSelectionsExcept,
   dirCacheTtlMs,
 }: UseSftpPaneActionsParams): UseSftpPaneActionsResult => {
+  const normalizePathForCompare = useCallback((path: string): string => {
+    if (isWindowsRoot(path)) return path.replace(/\//g, "\\").toLowerCase();
+    if (/^[A-Za-z]:/.test(path)) {
+      return path.replace(/\//g, "\\").replace(/[\\]+$/, "").toLowerCase();
+    }
+    if (path === "/") return "/";
+    return path.replace(/\/+$/, "");
+  }, []);
+
+  const isSamePath = useCallback((a: string, b: string): boolean => {
+    return normalizePathForCompare(a) === normalizePathForCompare(b);
+  }, [normalizePathForCompare]);
+
+  const isDescendantPath = useCallback((candidate: string, parent: string): boolean => {
+    const normalizedCandidate = normalizePathForCompare(candidate);
+    const normalizedParent = normalizePathForCompare(parent);
+    if (normalizedCandidate === normalizedParent) return false;
+
+    if (/^[a-z]:\\$/.test(normalizedParent)) {
+      return normalizedCandidate.startsWith(normalizedParent);
+    }
+
+    if (normalizedParent === "/") {
+      return normalizedCandidate.startsWith("/");
+    }
+
+    const separator = normalizedParent.includes("\\") ? "\\" : "/";
+    return normalizedCandidate.startsWith(`${normalizedParent}${separator}`);
+  }, [normalizePathForCompare]);
+
   // Build the shared cache key for the active pane. Prefer the last connected
   // host (which includes session-time overrides), fall back to the vault hosts list.
   const hostsRef = useRef(hosts);
@@ -146,7 +185,7 @@ export const useSftpPaneActions = ({
           connectionId,
           path,
           files: cached.files,
-          selectedFiles: new Set(),
+          selectedFiles: EMPTY_SET,
         });
         updateTab(side, targetTabId, (prev) => ({
           ...prev,
@@ -156,7 +195,7 @@ export const useSftpPaneActions = ({
           files: cached.files,
           loading: false,
           error: null,
-          selectedFiles: new Set(),
+          selectedFiles: EMPTY_SET,
         }));
         if (!pane.connection.isLocal) {
           // Use hostId as the shared cache key — this is safe because the
@@ -200,7 +239,7 @@ export const useSftpPaneActions = ({
         connection: prev.connection
           ? { ...prev.connection, currentPath: path }
           : null,
-        selectedFiles: new Set(),
+        selectedFiles: EMPTY_SET,
         loading: true,
         error: null,
       }));
@@ -270,7 +309,7 @@ export const useSftpPaneActions = ({
           connectionId,
           path,
           files,
-          selectedFiles: new Set(),
+          selectedFiles: EMPTY_SET,
         });
 
         updateTab(side, targetTabId, (prev) => ({
@@ -280,7 +319,7 @@ export const useSftpPaneActions = ({
             : null,
           files,
           loading: false,
-          selectedFiles: new Set(),
+          selectedFiles: EMPTY_SET,
         }));
         if (!pane.connection.isLocal) {
           setSharedRemoteHostCache(getActivePaneCacheKey(side, pane.connection.hostId, pane.connection.id), {
@@ -340,6 +379,25 @@ export const useSftpPaneActions = ({
         ? sideTabs.tabs.find((t) => t.id === options.tabId) ?? null
         : getActivePane(side);
       if (pane?.connection) {
+        const hasRemoteSession = pane.connection.isLocal || sftpSessionsRef.current.has(pane.connection.id);
+        if (!hasRemoteSession) {
+          if (options?.tabId) return;
+          const lastHost = lastConnectedHostRef.current[side];
+          if (lastHost && !reconnectingRef.current[side]) {
+            reconnectingRef.current[side] = true;
+            updateActiveTab(side, (prev) => ({
+              ...prev,
+              reconnecting: true,
+              error: "sftp.reconnecting.title",
+            }));
+          } else if (!lastHost) {
+            updateActiveTab(side, (prev) => ({
+              ...prev,
+              error: "sftp.error.connectionLostManual",
+            }));
+          }
+          return;
+        }
         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
@@ -362,7 +420,7 @@ export const useSftpPaneActions = ({
         }
       }
     },
-    [getActivePane, leftTabsRef, rightTabsRef, navigateTo, updateActiveTab, lastConnectedHostRef, reconnectingRef],
+    [getActivePane, leftTabsRef, rightTabsRef, navigateTo, updateActiveTab, lastConnectedHostRef, reconnectingRef, sftpSessionsRef],
   );
 
   const navigateUp = useCallback(
@@ -409,6 +467,10 @@ export const useSftpPaneActions = ({
 
   const toggleSelection = useCallback(
     (side: "left" | "right", fileName: string, multiSelect: boolean) => {
+      const activeTabId = (side === "left" ? leftTabsRef : rightTabsRef).current.activeTabId;
+      if (activeTabId) {
+        clearSelectionsExcept({ side, tabId: activeTabId });
+      }
       updateActiveTab(side, (prev) => {
         const newSelection = new Set(multiSelect ? prev.selectedFiles : []);
         if (newSelection.has(fileName)) {
@@ -419,11 +481,15 @@ export const useSftpPaneActions = ({
         return { ...prev, selectedFiles: newSelection };
       });
     },
-    [updateActiveTab],
+    [updateActiveTab, clearSelectionsExcept, leftTabsRef, rightTabsRef],
   );
 
   const rangeSelect = useCallback(
     (side: "left" | "right", fileNames: string[]) => {
+      const activeTabId = (side === "left" ? leftTabsRef : rightTabsRef).current.activeTabId;
+      if (activeTabId) {
+        clearSelectionsExcept({ side, tabId: activeTabId });
+      }
       const newSelection = new Set<string>();
       for (const name of fileNames) {
         if (name && name !== "..") {
@@ -433,11 +499,11 @@ export const useSftpPaneActions = ({
 
       updateActiveTab(side, (prev) => ({ ...prev, selectedFiles: newSelection }));
     },
-    [updateActiveTab],
+    [updateActiveTab, clearSelectionsExcept, leftTabsRef, rightTabsRef],
   );
 
   const clearSelection = useCallback((side: "left" | "right") => {
-    updateActiveTab(side, (prev) => ({ ...prev, selectedFiles: new Set() }));
+    updateActiveTab(side, (prev) => ({ ...prev, selectedFiles: EMPTY_SET }));
   }, [updateActiveTab]);
 
   const selectAll = useCallback(
@@ -467,12 +533,12 @@ export const useSftpPaneActions = ({
     );
   }, []);
 
-  const createDirectory = useCallback(
-    async (side: "left" | "right", name: string) => {
+  const createDirectoryAtPath = useCallback(
+    async (side: "left" | "right", path: string, name: string) => {
       const pane = getActivePane(side);
       if (!pane?.connection) return;
 
-      const fullPath = joinPath(pane.connection.currentPath, name);
+      const fullPath = joinPath(path, name);
 
       try {
         if (pane.connection.isLocal) {
@@ -485,7 +551,9 @@ export const useSftpPaneActions = ({
           }
           await netcattyBridge.get()?.mkdirSftp(sftpId, fullPath, pane.filenameEncoding);
         }
-        await refresh(side);
+        if (pane.connection.currentPath === path) {
+          await refresh(side);
+        }
       } catch (err) {
         if (isSessionError(err)) {
           handleSessionError(side, err as Error);
@@ -497,12 +565,21 @@ export const useSftpPaneActions = ({
     [getActivePane, refresh, handleSessionError, sftpSessionsRef, isSessionError],
   );
 
-  const createFile = useCallback(
+  const createDirectory = useCallback(
     async (side: "left" | "right", name: string) => {
       const pane = getActivePane(side);
       if (!pane?.connection) return;
+      await createDirectoryAtPath(side, pane.connection.currentPath, name);
+    },
+    [createDirectoryAtPath, getActivePane],
+  );
 
-      const fullPath = joinPath(pane.connection.currentPath, name);
+  const createFileAtPath = useCallback(
+    async (side: "left" | "right", path: string, name: string) => {
+      const pane = getActivePane(side);
+      if (!pane?.connection) return;
+
+      const fullPath = joinPath(path, name);
 
       try {
         if (pane.connection.isLocal) {
@@ -529,7 +606,9 @@ export const useSftpPaneActions = ({
             throw new Error("No write method available");
           }
         }
-        await refresh(side);
+        if (pane.connection.currentPath === path) {
+          await refresh(side);
+        }
       } catch (err) {
         if (isSessionError(err)) {
           handleSessionError(side, err as Error);
@@ -541,6 +620,15 @@ export const useSftpPaneActions = ({
     [getActivePane, refresh, handleSessionError, sftpSessionsRef, isSessionError],
   );
 
+  const createFile = useCallback(
+    async (side: "left" | "right", name: string) => {
+      const pane = getActivePane(side);
+      if (!pane?.connection) return;
+      await createFileAtPath(side, pane.connection.currentPath, name);
+    },
+    [createFileAtPath, getActivePane],
+  );
+
   const deleteFiles = useCallback(
     async (side: "left" | "right", fileNames: string[]) => {
       const pane = getActivePane(side);
@@ -686,6 +774,139 @@ export const useSftpPaneActions = ({
     [getActivePane, refresh, handleSessionError, sftpSessionsRef, isSessionError],
   );
 
+  // Rename using a full source path (for tree view where entryPath is already absolute).
+  // newName is still a basename; the new path is built as joinPath(parent, newName).
+  const renameFileAtPath = useCallback(
+    async (side: "left" | "right", oldPath: string, newName: string) => {
+      const pane = getActivePane(side);
+      if (!pane?.connection) return;
+
+      const parentPath = getParentPath(oldPath);
+      const newPath = joinPath(parentPath, newName);
+
+      try {
+        if (pane.connection.isLocal) {
+          await netcattyBridge.get()?.renameLocalFile?.(oldPath, newPath);
+        } else {
+          const sftpId = sftpSessionsRef.current.get(pane.connection.id);
+          if (!sftpId) {
+            handleSessionError(side, new Error("SFTP session not found"));
+            return;
+          }
+          await netcattyBridge.get()?.renameSftp?.(sftpId, oldPath, newPath, pane.filenameEncoding);
+        }
+        if (pane.connection.currentPath === parentPath) {
+          await refresh(side);
+        }
+      } catch (err) {
+        if (isSessionError(err)) {
+          handleSessionError(side, err as Error);
+          return;
+        }
+        throw err;
+      }
+    },
+    [getActivePane, refresh, handleSessionError, sftpSessionsRef, isSessionError],
+  );
+
+  const moveEntriesToPath = useCallback(
+    async (side: "left" | "right", sourcePaths: string[], targetPath: string) => {
+      const pane = getActivePane(side);
+      if (!pane?.connection || sourcePaths.length === 0) return;
+
+      const uniqueSources = Array.from(new Set(sourcePaths.filter(Boolean)));
+      const filteredSources = uniqueSources
+        .sort((a, b) => a.length - b.length)
+        .filter((path, index, arr) =>
+          !arr.slice(0, index).some((otherPath) => isSamePath(path, otherPath) || isDescendantPath(path, otherPath)),
+        );
+
+      const movableSources = filteredSources.filter((sourcePath) => {
+        if (isSamePath(sourcePath, targetPath)) return false;
+        if (isDescendantPath(targetPath, sourcePath)) return false;
+        const destinationPath = joinPath(targetPath, getFileName(sourcePath));
+        return !isSamePath(destinationPath, sourcePath);
+      });
+
+      if (movableSources.length === 0) return;
+
+      const sourceParentNames = new Map<string, string[]>();
+      for (const sourcePath of movableSources) {
+        const parentPath = getParentPath(sourcePath);
+        const names = sourceParentNames.get(parentPath) ?? [];
+        names.push(getFileName(sourcePath));
+        sourceParentNames.set(parentPath, names);
+      }
+
+      try {
+        if (pane.connection.isLocal) {
+          const renameLocalFile = netcattyBridge.get()?.renameLocalFile;
+          if (!renameLocalFile) {
+            throw new Error("Local rename unavailable");
+          }
+          for (const sourcePath of movableSources) {
+            const destinationPath = joinPath(targetPath, getFileName(sourcePath));
+            await renameLocalFile(sourcePath, destinationPath);
+          }
+        } else {
+          const sftpId = sftpSessionsRef.current.get(pane.connection.id);
+          if (!sftpId) {
+            handleSessionError(side, new Error("SFTP session not found"));
+            return;
+          }
+          const renameSftp = netcattyBridge.get()?.renameSftp;
+          if (!renameSftp) {
+            throw new Error("SFTP rename unavailable");
+          }
+          for (const sourcePath of movableSources) {
+            const destinationPath = joinPath(targetPath, getFileName(sourcePath));
+            await renameSftp(sftpId, sourcePath, destinationPath, pane.filenameEncoding);
+          }
+        }
+        clearCacheForConnection(pane.connection.id);
+        const currentPath = pane.connection.currentPath;
+        const sourceParents = Array.from(sourceParentNames.keys());
+        const currentPathAffected =
+          sourceParents.some((path) => isSamePath(path, currentPath)) ||
+          isSamePath(targetPath, currentPath);
+
+        if (currentPathAffected) {
+          await refresh(side);
+        } else {
+          updateActiveTab(side, (prev) => {
+            if (!prev.connection || prev.connection.id !== pane.connection?.id) {
+              return prev;
+            }
+
+            const namesInCurrentPath = sourceParentNames.get(prev.connection.currentPath);
+            if (!namesInCurrentPath || namesInCurrentPath.length === 0) {
+              return prev;
+            }
+
+            const removeSet = new Set(namesInCurrentPath);
+            const nextSelection = new Set(prev.selectedFiles);
+            for (const name of removeSet) {
+              nextSelection.delete(name);
+            }
+
+            return {
+              ...prev,
+              files: prev.files.filter((file) => !removeSet.has(file.name)),
+              selectedFiles: nextSelection,
+            };
+          });
+        }
+      } catch (err) {
+        if (isSessionError(err)) {
+          handleSessionError(side, err as Error);
+          return;
+        }
+        throw err;
+      }
+    },
+    [clearCacheForConnection, getActivePane, handleSessionError, isDescendantPath, isSamePath, isSessionError, refresh, sftpSessionsRef, updateActiveTab],
+  );
+
   const changePermissions = useCallback(
     async (
       side: "left" | "right",
@@ -730,10 +951,14 @@ export const useSftpPaneActions = ({
     setFilter,
     getFilteredFiles,
     createDirectory,
+    createDirectoryAtPath,
     createFile,
+    createFileAtPath,
     deleteFiles,
     deleteFilesAtPath,
     renameFile,
+    renameFileAtPath,
+    moveEntriesToPath,
     changePermissions,
   };
 };

application/state/sftp/useSftpTabsState.ts

@@ -14,6 +14,7 @@ interface SftpTabsState {
   getActivePane: (side: "left" | "right") => SftpPane | null;
   updateTab: (side: "left" | "right", tabId: string, updater: (pane: SftpPane) => SftpPane) => void;
   updateActiveTab: (side: "left" | "right", updater: (pane: SftpPane) => SftpPane) => void;
+  clearSelectionsExcept: (target: { side: "left" | "right"; tabId: string } | null) => void;
   setTabShowHiddenFiles: (side: "left" | "right", tabId: string, showHiddenFiles: boolean) => void;
   addTab: (side: "left" | "right") => string;
   closeTab: (side: "left" | "right", tabId: string) => void;
@@ -34,6 +35,8 @@ interface SftpTabsState {
   getActiveTabId: (side: "left" | "right") => string | null;
 }
 
+const EMPTY_SELECTION = new Set<string>();
+
 export const useSftpTabsState = ({
   defaultShowHiddenFiles = false,
 }: {
@@ -95,6 +98,31 @@ export const useSftpTabsState = ({
     [updateTab],
   );
 
+  const clearSelectionsExcept = useCallback(
+    (target: { side: "left" | "right"; tabId: string } | null) => {
+      const clearSideSelections = (
+        prev: SftpSideTabs,
+        side: "left" | "right",
+      ): SftpSideTabs => {
+        let changed = false;
+        const tabs = prev.tabs.map((tab) => {
+          const shouldKeepSelection =
+            target?.side === side && target.tabId === tab.id;
+          if (shouldKeepSelection || tab.selectedFiles.size === 0) {
+            return tab;
+          }
+          changed = true;
+          return { ...tab, selectedFiles: EMPTY_SELECTION };
+        });
+        return changed ? { ...prev, tabs } : prev;
+      };
+
+      setLeftTabs((prev) => clearSideSelections(prev, "left"));
+      setRightTabs((prev) => clearSideSelections(prev, "right"));
+    },
+    [],
+  );
+
   const setTabShowHiddenFiles = useCallback(
     (side: "left" | "right", tabId: string, showHiddenFiles: boolean) => {
       updateTab(side, tabId, (prev) => {
@@ -258,6 +286,7 @@ export const useSftpTabsState = ({
     getActivePane,
     updateTab,
     updateActiveTab,
+    clearSelectionsExcept,
     setTabShowHiddenFiles,
     addTab,
     closeTab,

application/state/sftp/utils.ts

@@ -48,7 +48,7 @@ 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 => {

application/state/useAIState.ts

@@ -12,6 +12,7 @@ import {
   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';
@@ -32,6 +33,12 @@ 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;
@@ -40,6 +47,83 @@ function cleanupAcpSessions(sessionIds: string[]) {
   }
 }
 
+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;
@@ -66,6 +150,30 @@ function pruneSessionsForStorage(sessions: AISession[]): AISession[] {
   });
 }
 
+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[]>(() =>
@@ -117,7 +225,9 @@ export function useAIState() {
     sessionsRef.current = sessions;
   }, [sessions]);
   // Per-scope active session: keyed by `${scopeType}:${scopeTargetId}`
-  const [activeSessionIdMap, setActiveSessionIdMapRaw] = useState<Record<string, string | null>>({});
+  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>>(() =>
@@ -129,8 +239,43 @@ export function useAIState() {
     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 => ({ ...prev, [scopeKey]: id }));
+    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) => {
@@ -303,9 +448,22 @@ export function useAIState() {
             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;
@@ -315,7 +473,33 @@ export function useAIState() {
       }
     };
     window.addEventListener('storage', handleStorage);
-    return () => window.removeEventListener('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 ──
@@ -375,6 +559,7 @@ export function useAIState() {
     };
     setSessionsRaw(prev => {
       const next = [session, ...prev];
+      setLatestAISessionsSnapshot(next);
       persistSessions(next);
       return next;
     });
@@ -391,12 +576,19 @@ export function useAIState() {
     }
     setSessionsRaw(prev => {
       const next = prev.filter(s => s.id !== sessionId);
+      setLatestAISessionsSnapshot(next);
       persistSessions(next);
       return next;
     });
     if (scopeKey) {
       setActiveSessionIdMapRaw(prev => {
-        if (prev[scopeKey] === sessionId) return { ...prev, [scopeKey]: null };
+        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;
       });
     }
@@ -415,12 +607,19 @@ export function useAIState() {
       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) return { ...prev, [scopeKey]: null };
+      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]);
@@ -428,6 +627,7 @@ export function useAIState() {
   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;
     });
@@ -440,11 +640,67 @@ export function useAIState() {
           ? { ...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;
 
@@ -463,6 +719,7 @@ export function useAIState() {
         }
         return { ...s, messages: msgs, updatedAt: Date.now() };
       });
+      setLatestAISessionsSnapshot(next);
       debouncedPersistSessions();
       return next;
     });
@@ -476,6 +733,7 @@ export function useAIState() {
         msgs[msgs.length - 1] = updater(msgs[msgs.length - 1]);
         return { ...s, messages: msgs, updatedAt: Date.now() };
       });
+      setLatestAISessionsSnapshot(next);
       debouncedPersistSessions();
       return next;
     });
@@ -491,6 +749,7 @@ export function useAIState() {
         msgs[idx] = updater(msgs[idx]);
         return { ...s, messages: msgs, updatedAt: Date.now() };
       });
+      setLatestAISessionsSnapshot(next);
       debouncedPersistSessions();
       return next;
     });
@@ -503,29 +762,21 @@ export function useAIState() {
     }
     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>) => {
-    const removedSessionIds = sessionsRef.current
-      .filter(s => s.scope.targetId && !activeTargetIds.has(s.scope.targetId))
-      .map(s => s.id);
-    cleanupAcpSessions(removedSessionIds);
-    setSessionsRaw(prev => {
-      const next = prev.filter(s => {
-        // Keep sessions without a targetId (global scope)
-        if (!s.scope.targetId) return true;
-        // Keep sessions whose target still exists
-        return activeTargetIds.has(s.scope.targetId);
-      });
-      if (next.length !== prev.length) {
-        persistSessions(next);
-      }
-      return next;
-    });
-  }, [persistSessions]);
+    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) => {
@@ -602,6 +853,7 @@ export function useAIState() {
     deleteSessionsByTarget,
     updateSessionTitle,
     updateSessionExternalSessionId,
+    retargetSessionScope,
     addMessageToSession,
     updateLastMessage,
     updateMessageById,

application/state/useAutoSync.ts

@@ -7,7 +7,7 @@
  * - Debounced sync to avoid too frequent API calls
  */
 
-import { useCallback, useEffect, useRef } from 'react';
+import { useCallback, useEffect, useRef, useState } from 'react';
 import { useCloudSync } from './useCloudSync';
 import { useI18n } from '../i18n/I18nProvider';
 import { getCloudSyncManager } from '../../infrastructure/services/CloudSyncManager';
@@ -16,11 +16,11 @@ import {
   findSyncPayloadEncryptedCredentialPaths,
 } from '../../domain/credentials';
 import { isProviderReadyForSync, type CloudProvider, type SyncPayload } from '../../domain/sync';
-import { collectSyncableSettings } from '../../domain/syncPayload';
+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
@@ -32,6 +32,7 @@ interface AutoSyncConfig {
   snippetPackages?: SyncPayload['snippetPackages'];
   portForwardingRules?: SyncPayload['portForwardingRules'];
   knownHosts?: SyncPayload['knownHosts'];
+  groupConfigs?: SyncPayload['groupConfigs'];
   /** Opaque token that changes whenever a synced setting changes. */
   settingsVersion?: number;
 
@@ -60,6 +61,14 @@ export const useAutoSync = (config: AutoSyncConfig) => {
   const isSyncRunningRef = useRef(false);
   const skipNextSyncRef = useRef(false);
 
+  // Listen for SFTP bookmark changes to trigger auto-sync
+  const [bookmarksVersion, setBookmarksVersion] = useState(0);
+  useEffect(() => {
+    const handler = () => setBookmarksVersion((v) => v + 1);
+    window.addEventListener('sftp-bookmarks-changed', handler);
+    return () => window.removeEventListener('sftp-bookmarks-changed', handler);
+  }, []);
+
   const getSyncSnapshot = useCallback(() => {
     let effectivePFRules = config.portForwardingRules;
     if (!effectivePFRules || effectivePFRules.length === 0) {
@@ -87,6 +96,7 @@ export const useAutoSync = (config: AutoSyncConfig) => {
       snippetPackages: config.snippetPackages,
       portForwardingRules: effectivePFRules,
       knownHosts: effectiveKnownHosts,
+      groupConfigs: config.groupConfigs,
     };
   }, [
     config.hosts,
@@ -97,6 +107,7 @@ export const useAutoSync = (config: AutoSyncConfig) => {
     config.snippetPackages,
     config.portForwardingRules,
     config.knownHosts,
+    config.groupConfigs,
   ]);
 
   // Build sync payload
@@ -189,7 +200,7 @@ 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'),
       );
@@ -231,7 +242,7 @@ export const useAutoSync = (config: AutoSyncConfig) => {
         // 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).
-        toast.success(t('sync.autoSync.syncedMessage'), t('sync.autoSync.syncedTitle'));
+        notify.success(t('sync.autoSync.syncedMessage'), t('sync.autoSync.syncedTitle'));
       }
     } catch (error) {
       console.error('[AutoSync] Failed to check remote version:', error);
@@ -288,7 +299,7 @@ export const useAutoSync = (config: AutoSyncConfig) => {
         clearTimeout(syncTimeoutRef.current);
       }
     };
-  }, [sync.hasAnyConnectedProvider, sync.autoSyncEnabled, sync.isUnlocked, sync.isSyncing, getDataHash, syncNow, config.settingsVersion]);
+  }, [sync.hasAnyConnectedProvider, sync.autoSyncEnabled, sync.isUnlocked, sync.isSyncing, getDataHash, syncNow, config.settingsVersion, bookmarksVersion]);
   
   // 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';
@@ -82,8 +81,10 @@ export interface CloudSyncHook {
     code: string,
     redirectUri: string
   ) => Promise<void>;
+  cancelOAuthConnect: () => 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 +104,6 @@ export interface CloudSyncHook {
   refresh: () => void;
 }
 
-export interface GitHubAuthState {
-  isAuthenticating: boolean;
-  deviceFlowState: DeviceFlowState | null;
-  error: string | null;
-}
-
 // ============================================================================
 // Hook Implementation
 // ============================================================================
@@ -127,17 +122,6 @@ 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 +257,7 @@ 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 +265,44 @@ 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
+
+      // Start callback server and open system browser
       const callbackPromise = startCallback(expectedState);
-      
-      // Open browser after starting server
-      setTimeout(() => {
-        window.open(data.url, "_blank", "width=600,height=700,noopener,noreferrer");
-      }, 100);
-      
-      // Wait for callback
-      const { code } = await callbackPromise;
-      
-      // Complete auth with the received code
-      await manager.completePKCEAuth('google', code, data.redirectUri);
+
+      // Use system browser to avoid white-screen issues in popup windows (#563)
+      // Race: if browser launch fails, surface the error immediately
+      let openTimer: ReturnType<typeof setTimeout> | null = null;
+      const browserPromise = new Promise<never>((_resolve, reject) => {
+        openTimer = setTimeout(async () => {
+          try {
+            await bridge?.openExternal(data.url);
+          } catch (err) {
+            bridge?.cancelOAuthCallback?.();
+            reject(err instanceof Error ? err : new Error('Failed to open browser for authentication'));
+          }
+        }, 100);
+      });
+
+      try {
+        const { code } = await Promise.race([callbackPromise, browserPromise]);
+
+        // Complete auth with the received code
+        await manager.completePKCEAuth('google', code, data.redirectUri);
+      } finally {
+        if (openTimer) clearTimeout(openTimer);
+      }
     }
-    
+
     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 +310,33 @@ 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
+
+      // Start callback server and open system browser
       const callbackPromise = startCallback(expectedState);
-      
-      // Open browser after starting server
-      setTimeout(() => {
-        window.open(data.url, "_blank", "width=600,height=700,noopener,noreferrer");
-      }, 100);
-      
-      // Wait for callback
-      const { code } = await callbackPromise;
-      
-      // Complete auth with the received code
-      await manager.completePKCEAuth('onedrive', code, data.redirectUri);
+
+      // Use system browser to avoid white-screen issues in popup windows (#563)
+      let openTimer: ReturnType<typeof setTimeout> | null = null;
+      const browserPromise = new Promise<never>((_resolve, reject) => {
+        openTimer = setTimeout(async () => {
+          try {
+            await bridge?.openExternal(data.url);
+          } catch (err) {
+            bridge?.cancelOAuthCallback?.();
+            reject(err instanceof Error ? err : new Error('Failed to open browser for authentication'));
+          }
+        }, 100);
+      });
+
+      try {
+        const { code } = await Promise.race([callbackPromise, browserPromise]);
+
+        // Complete auth with the received code
+        await manager.completePKCEAuth('onedrive', code, data.redirectUri);
+      } finally {
+        if (openTimer) clearTimeout(openTimer);
+      }
     }
-    
+
     return data.url;
   }, []);
   
@@ -345,6 +352,10 @@ 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);
   }, []);
@@ -353,6 +364,11 @@ export const useCloudSync = (): CloudSyncHook => {
     await manager.connectConfigProvider('s3', config);
   }, []);
   
+  const cancelOAuthConnect = useCallback(() => {
+    const bridge = netcattyBridge.get();
+    bridge?.cancelOAuthCallback?.();
+  }, []);
+
   // ========== Settings ==========
   
   const setAutoSync = useCallback((enabled: boolean, intervalMinutes?: number) => {
@@ -450,8 +466,10 @@ export const useCloudSync = (): CloudSyncHook => {
     connectWebDAV,
     connectS3,
     completePKCEAuth,
+    cancelOAuthConnect,
     disconnectProvider,
-    
+    resetProviderStatus,
+
     // Sync Actions
     syncNow: syncNowWithUnlock,
     syncToProvider: syncToProviderWithUnlock,
@@ -472,60 +490,4 @@ 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/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();
+  delete document.documentElement.dataset.immersiveTheme;
+}
+
+// ---------------------------------------------------------------------------
+// Hook
+// ---------------------------------------------------------------------------
+
+export function useImmersiveMode({
+  activeTabId,
+  activeTerminalTheme,
+  restoreOriginalTheme,
+}: {
+  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 (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);
+      document.documentElement.dataset.immersiveTheme = fp;
+    }
+  }, [isTerminalTab, activeTerminalTheme]);
+
+  // RESTORE: useEffect — runs after paint, with fade overlay
+  useEffect(() => {
+    if (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(); };
+  }, [isTerminalTab, activeTerminalTheme, restoreOriginalTheme]);
+
+  // Cleanup on unmount
+  useEffect(() => {
+    return () => {
+      removeImmersiveStyle();
+      appliedFpRef.current = null;
+      if (overrideActiveRef.current) {
+        overrideActiveRef.current = false;
+        restoreRef.current();
+      }
+    };
+  }, []);
+}

application/state/usePortForwardingAutoStart.ts

@@ -3,8 +3,9 @@
  * 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 { GroupConfig, Host, Identity, PortForwardingRule, SSHKey } from "../../domain/models";
+import { resolveGroupDefaults, applyGroupDefaults } from "../../domain/groupConfig";
 import { STORAGE_KEY_PORT_FORWARDING } from "../../infrastructure/config/storageKeys";
 import { localStorageAdapter } from "../../infrastructure/persistence/localStorageAdapter";
 import {
@@ -17,7 +18,9 @@ import { logger } from "../../lib/logger";
 
 export interface UsePortForwardingAutoStartOptions {
   hosts: Host[];
-  keys: { id: string; privateKey: string; passphrase: string }[];
+  keys: SSHKey[];
+  identities: Identity[];
+  groupConfigs: GroupConfig[];
 }
 
 /**
@@ -27,10 +30,39 @@ export interface UsePortForwardingAutoStartOptions {
 export const usePortForwardingAutoStart = ({
   hosts,
   keys,
+  identities,
+  groupConfigs,
 }: 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 groupConfigsRef = useRef<GroupConfig[]>(groupConfigs);
+
+  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 +73,20 @@ export const usePortForwardingAutoStart = ({
     keysRef.current = keys;
   }, [keys]);
 
+  useEffect(() => {
+    identitiesRef.current = identities;
+  }, [identities]);
+
+  useEffect(() => {
+    groupConfigsRef.current = groupConfigs;
+  }, [groupConfigs]);
+
+  const resolveEffectiveHost = useCallback((host: Host): Host => {
+    if (!host.group) return host;
+    const defaults = resolveGroupDefaults(host.group, groupConfigsRef.current);
+    return applyGroupDefaults(host, defaults);
+  }, []);
+
   // Set up the reconnect callback
   useEffect(() => {
     const handleReconnect = async (
@@ -57,25 +103,37 @@ export const usePortForwardingAutoStart = ({
         return { success: false, error: "Rule or host not found" };
       }
 
-      const host = hostsRef.current.find((h) => h.id === rule.hostId);
-      if (!host) {
+      const rawHost = hostsRef.current.find((h) => h.id === rule.hostId);
+      if (!rawHost) {
         return { success: false, error: "Host not found" };
       }
 
-      return startPortForward(rule, host, keysRef.current, onStatusChange, true);
+      const host = resolveEffectiveHost(rawHost);
+      return startPortForward(rule, host, hostsRef.current, keysRef.current, identitiesRef.current, onStatusChange, true);
     };
 
     setReconnectCallback(handleReconnect);
     return () => {
       setReconnectCallback(null);
     };
-  }, []);
+  }, [resolveEffectiveHost]);
 
   // Auto-start rules on app launch
   useEffect(() => {
     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;
@@ -103,12 +161,15 @@ export const usePortForwardingAutoStart = ({
 
       // Start each auto-start rule
       for (const rule of autoStartRules) {
-        const host = hosts.find((h) => h.id === rule.hostId);
-        if (host) {
+        const rawHost = hosts.find((h) => h.id === rule.hostId);
+        if (rawHost) {
+          const host = resolveEffectiveHost(rawHost);
           void startPortForward(
             rule,
             host,
+            hosts,
             keys,
+            identities,
             (status, error) => {
               // Update the rule status in storage
               const currentRules = localStorageAdapter.read<PortForwardingRule[]>(
@@ -135,5 +196,5 @@ export const usePortForwardingAutoStart = ({
     };
 
     void runAutoStart();
-  }, [hosts, keys]);
+  }, [hosts, identities, isHostAuthReady, keys, resolveEffectiveHost]);
 };

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

@@ -40,25 +40,33 @@ export const useSessionState = () => {
 
   const createLocalTerminal = useCallback((options?: {
     shellType?: TerminalSession['shellType'];
+    shell?: string;
+    shellArgs?: string[];
+    shellName?: string;
+    shellIcon?: string;
   }) => {
     const sessionId = crypto.randomUUID();
     const localHostId = `local-${sessionId}`;
     const newSession: TerminalSession = {
       id: sessionId,
       hostId: localHostId,
-      hostLabel: 'Local Terminal',
+      hostLabel: options?.shellName || 'Local Terminal',
       hostname: 'localhost',
       username: 'local',
       status: 'connecting',
       protocol: 'local',
       shellType: options?.shellType,
+      localShell: options?.shell,
+      localShellArgs: options?.shellArgs,
+      localShellName: options?.shellName,
+      localShellIcon: options?.shellIcon,
     };
     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;
@@ -71,6 +79,7 @@ export const useSessionState = () => {
       status: 'connecting',
       protocol: 'serial',
       serialConfig: config,
+      charset: options?.charset,
     };
     setSessions(prev => [...prev, newSession]);
     setActiveTabId(sessionId);
@@ -103,6 +112,7 @@ export const useSessionState = () => {
         status: 'connecting',
         protocol: 'serial',
         serialConfig: serialConfig,
+        charset: host.charset,
       };
       setSessions(prev => [...prev, newSession]);
       setActiveTabId(sessionId);
@@ -120,6 +130,7 @@ export const useSessionState = () => {
       protocol: host.protocol,
       port: host.port,
       moshEnabled: host.moshEnabled,
+      charset: host.charset,
     };
     setSessions(prev => [...prev, newSession]);
     setActiveTabId(newSession.id);
@@ -321,6 +332,7 @@ export const useSessionState = () => {
           status: 'connecting',
           protocol: 'serial',
           serialConfig: serialConfig,
+          charset: host.charset,
         };
       }
 
@@ -334,6 +346,7 @@ export const useSessionState = () => {
         protocol: host.protocol,
         port: host.port,
         moshEnabled: host.moshEnabled,
+        charset: host.charset,
       };
     });
 
@@ -445,8 +458,13 @@ export const useSessionState = () => {
           port: session.port,
           moshEnabled: session.moshEnabled,
           shellType: nextShellType,
+          charset: session.charset,
+          localShell: session.localShell,
+          localShellArgs: session.localShellArgs,
+          localShellName: session.localShellName,
+          localShellIcon: session.localShellIcon,
         };
-        
+
         // Add pane to existing workspace
         const hint: SplitHint = {
           direction,
@@ -476,13 +494,18 @@ export const useSessionState = () => {
         port: session.port,
         moshEnabled: session.moshEnabled,
         shellType: nextShellType,
+        charset: session.charset,
+        localShell: session.localShell,
+        localShellArgs: session.localShellArgs,
+        localShellName: session.localShellName,
+        localShellIcon: session.localShellIcon,
       };
-      
+
       const hint: SplitHint = {
         direction,
         position: direction === 'horizontal' ? 'bottom' : 'right',
       };
-      
+
       const newWorkspace = createWorkspaceEntity(sessionId, newSession.id, hint);
       setWorkspaces(prev => [...prev, newWorkspace]);
       setActiveTabId(newWorkspace.id);
@@ -563,6 +586,7 @@ export const useSessionState = () => {
       hostname: host.hostname,
       username: host.username,
       status: 'connecting' as const,
+      charset: host.charset,
       // workspaceId will be set after workspace is created
     }));
 
@@ -649,7 +673,12 @@ export const useSessionState = () => {
         port: session.port,
         moshEnabled: session.moshEnabled,
         shellType: nextShellType,
+        charset: session.charset,
         serialConfig: session.serialConfig,
+        localShell: session.localShell,
+        localShellArgs: session.localShellArgs,
+        localShellName: session.localShellName,
+        localShellIcon: session.localShellIcon,
       };
 
       setActiveTabId(newSession.id);
@@ -682,9 +711,11 @@ 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]);
 
@@ -698,10 +729,12 @@ 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

@@ -22,6 +22,8 @@ import {
   STORAGE_KEY_SFTP_SHOW_HIDDEN_FILES,
   STORAGE_KEY_SFTP_USE_COMPRESSED_UPLOAD,
   STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR,
+  STORAGE_KEY_SFTP_TRANSFER_CONCURRENCY,
+  STORAGE_KEY_SFTP_DEFAULT_VIEW_MODE,
   STORAGE_KEY_EDITOR_WORD_WRAP,
   STORAGE_KEY_SESSION_LOGS_ENABLED,
   STORAGE_KEY_SESSION_LOGS_DIR,
@@ -30,6 +32,8 @@ import {
   STORAGE_KEY_CLOSE_TO_TRAY,
   STORAGE_KEY_GLOBAL_HOTKEY_ENABLED,
   STORAGE_KEY_AUTO_UPDATE_ENABLED,
+  STORAGE_KEY_WORKSPACE_FOCUS_STYLE,
+
 } from '../../infrastructure/config/storageKeys';
 import { DEFAULT_UI_LOCALE, resolveSupportedLocale } from '../../infrastructure/config/i18n';
 import { TERMINAL_THEMES } from '../../infrastructure/config/terminalThemes';
@@ -38,7 +42,6 @@ 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';
 
@@ -65,6 +68,7 @@ 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;
+const DEFAULT_SFTP_DEFAULT_VIEW_MODE: 'list' | 'tree' = 'list';
 
 // Editor defaults
 const DEFAULT_EDITOR_WORD_WRAP = false;
@@ -121,8 +125,11 @@ const applyThemeTokens = (
   accentOverride: string,
 ) => {
   const root = window.document.documentElement;
-  root.classList.remove('light', 'dark');
-  root.classList.add(resolvedTheme);
+  // If immersive override 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);
@@ -155,7 +162,6 @@ const applyThemeTokens = (
 };
 
 export const useSettingsState = () => {
-  const availableFonts = useAvailableFonts();
   const uiFontsLoaded = useUIFontsLoaded();
   const [theme, setTheme] = useState<'dark' | 'light' | 'system'>(() => {
     const stored = readStoredString(STORAGE_KEY_THEME);
@@ -237,6 +243,14 @@ export const useSettingsState = () => {
     const stored = readStoredString(STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR);
     return stored === 'true' ? true : DEFAULT_SFTP_AUTO_OPEN_SIDEBAR;
   });
+  const [sftpDefaultViewMode, setSftpDefaultViewMode] = useState<'list' | 'tree'>(() => {
+    const stored = readStoredString(STORAGE_KEY_SFTP_DEFAULT_VIEW_MODE);
+    return (stored === 'list' || stored === 'tree') ? stored : DEFAULT_SFTP_DEFAULT_VIEW_MODE;
+  });
+  const [sftpTransferConcurrency, setSftpTransferConcurrencyState] = useState<number>(() => {
+    const stored = localStorageAdapter.readNumber(STORAGE_KEY_SFTP_TRANSFER_CONCURRENCY);
+    return stored != null && stored >= 1 && stored <= 16 ? stored : 4;
+  });
 
   // Editor Settings
   const [editorWordWrap, setEditorWordWrapState] = useState<boolean>(() => {
@@ -287,6 +301,10 @@ export const useSettingsState = () => {
   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'
@@ -322,6 +340,24 @@ export const useSettingsState = () => {
     }
   }, []);
 
+
+  const setSftpTransferConcurrency = useCallback((value: number) => {
+    const clamped = Math.max(1, Math.min(16, Math.round(value)));
+    setSftpTransferConcurrencyState(clamped);
+    localStorageAdapter.writeString(STORAGE_KEY_SFTP_TRANSFER_CONCURRENCY, String(clamped));
+    notifySettingsChanged(STORAGE_KEY_SFTP_TRANSFER_CONCURRENCY, clamped);
+  }, [notifySettingsChanged]);
+
+  const [workspaceFocusStyle, setWorkspaceFocusStyleState] = useState<'dim' | 'border'>(() => {
+    const stored = localStorageAdapter.readString(STORAGE_KEY_WORKSPACE_FOCUS_STYLE);
+    return stored === 'border' ? 'border' : 'dim';
+  });
+  const setWorkspaceFocusStyle = useCallback((style: 'dim' | 'border') => {
+    setWorkspaceFocusStyleState(style);
+    localStorageAdapter.writeString(STORAGE_KEY_WORKSPACE_FOCUS_STYLE, style);
+    notifySettingsChanged(STORAGE_KEY_WORKSPACE_FOCUS_STYLE, style);
+  }, [notifySettingsChanged]);
+
   const syncAppearanceFromStorage = useCallback(() => {
     const storedTheme = readStoredString(STORAGE_KEY_THEME);
     const nextTheme = storedTheme && isValidTheme(storedTheme) ? storedTheme : theme;
@@ -334,6 +370,17 @@ 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);
@@ -401,6 +448,12 @@ export const useSettingsState = () => {
     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');
+    const storedDefaultViewMode = readStoredString(STORAGE_KEY_SFTP_DEFAULT_VIEW_MODE);
+    if (storedDefaultViewMode === 'list' || storedDefaultViewMode === 'tree') setSftpDefaultViewMode(storedDefaultViewMode);
+
+    // Workspace focus style
+    const storedFocusStyle = readStoredString(STORAGE_KEY_WORKSPACE_FOCUS_STYLE);
+    if (storedFocusStyle === 'dim' || storedFocusStyle === 'border') setWorkspaceFocusStyleState(storedFocusStyle);
 
     // Custom terminal themes
     customThemeStore.loadFromStorage();
@@ -414,12 +467,11 @@ 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
@@ -437,7 +489,10 @@ 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
@@ -446,7 +501,10 @@ 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
@@ -540,6 +598,17 @@ export const useSettingsState = () => {
       if (key === STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR && typeof value === 'boolean') {
         setSftpAutoOpenSidebar((prev) => (prev === value ? prev : value));
       }
+      if (key === STORAGE_KEY_SFTP_DEFAULT_VIEW_MODE && typeof value === 'string') {
+        if (value === 'list' || value === 'tree') {
+          setSftpDefaultViewMode((prev) => (prev === value ? prev : value));
+        }
+      }
+      if (key === STORAGE_KEY_WORKSPACE_FOCUS_STYLE && (value === 'dim' || value === 'border')) {
+        setWorkspaceFocusStyleState((prev) => (prev === value ? prev : value));
+      }
+      if (key === STORAGE_KEY_SFTP_TRANSFER_CONCURRENCY && typeof value === 'number') {
+        setSftpTransferConcurrencyState((prev) => (prev === value ? prev : value));
+      }
     });
     return () => {
       try {
@@ -567,53 +636,76 @@ 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, sftpDefaultViewMode,
+    editorWordWrap, sessionLogsEnabled, sessionLogsDir, sessionLogsFormat,
+    globalHotkeyEnabled, autoUpdateEnabled,
+  });
+  settingsSnapshotRef.current = {
+    theme, lightUiThemeId, darkUiThemeId, accentMode, customAccent,
+    customCSS, uiFontFamilyId, hotkeyScheme, uiLanguage,
+    terminalThemeId, terminalFontFamilyId, terminalFontSize,
+    sftpDoubleClickBehavior, sftpAutoSync, sftpShowHiddenFiles,
+    sftpUseCompressedUpload, sftpAutoOpenSidebar, sftpDefaultViewMode,
+    editorWordWrap, sessionLogsEnabled, sessionLogsDir, sessionLogsFormat,
+    globalHotkeyEnabled, autoUpdateEnabled,
+  };
+
   // 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);
         }
       }
@@ -636,64 +728,64 @@ 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);
         }
@@ -701,54 +793,77 @@ 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 !== sftpAutoOpenSidebar) {
+        if (newValue !== s.sftpAutoOpenSidebar) {
           setSftpAutoOpenSidebar(newValue);
         }
       }
+      // Sync SFTP default view mode from other windows
+      if (e.key === STORAGE_KEY_SFTP_DEFAULT_VIEW_MODE && e.newValue) {
+        if ((e.newValue === 'list' || e.newValue === 'tree') && e.newValue !== s.sftpDefaultViewMode) {
+          setSftpDefaultViewMode(e.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 !== globalHotkeyEnabled) {
+        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 !== autoUpdateEnabled) {
+        if (newValue !== s.autoUpdateEnabled) {
           setAutoUpdateEnabled(newValue);
         }
       }
+      // Sync workspace focus style from other windows
+      if (e.key === STORAGE_KEY_WORKSPACE_FOCUS_STYLE && e.newValue !== null) {
+        if (e.newValue === 'dim' || e.newValue === 'border') {
+          setWorkspaceFocusStyleState(e.newValue);
+        }
+      }
+      // Sync transfer concurrency from other windows
+      if (e.key === STORAGE_KEY_SFTP_TRANSFER_CONCURRENCY && e.newValue !== null) {
+        const num = Number(e.newValue);
+        if (num >= 1 && num <= 16) {
+          setSftpTransferConcurrencyState(num);
+        }
+      }
     };
 
     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, sftpAutoOpenSidebar, editorWordWrap, sessionLogsEnabled, sessionLogsDir, sessionLogsFormat, globalHotkeyEnabled, autoUpdateEnabled, 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;
@@ -763,11 +878,13 @@ 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]);
 
@@ -778,10 +895,7 @@ 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');
@@ -789,59 +903,76 @@ 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 SFTP default view mode
+  useEffect(() => {
+    localStorageAdapter.writeString(STORAGE_KEY_SFTP_DEFAULT_VIEW_MODE, sftpDefaultViewMode);
+    if (!persistMountedRef.current) return;
+    notifySettingsChanged(STORAGE_KEY_SFTP_DEFAULT_VIEW_MODE, sftpDefaultViewMode);
+  }, [sftpDefaultViewMode, 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 && globalHotkeyEnabled) {
@@ -865,25 +996,32 @@ export const useSettingsState = () => {
         });
       }
     }
+    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.
@@ -904,16 +1042,11 @@ export const useSettingsState = () => {
   }, []);
 
   // Persist auto-update enabled setting.
-  // Skip IPC on initial mount to avoid overwriting the main-process preference
-  // file when localStorage has been cleared (where the default is true).
-  const autoUpdateMountedRef = useRef(false);
+  // 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);
-    if (!autoUpdateMountedRef.current) {
-      autoUpdateMountedRef.current = true;
-      return; // Skip IPC on initial mount
-    }
     // Notify main process on user-initiated changes
     const bridge = netcattyBridge.get();
     bridge?.setAutoUpdate?.(autoUpdateEnabled).catch((err: unknown) => {
@@ -921,6 +1054,13 @@ export const useSettingsState = () => {
     });
   }, [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 => {
@@ -983,11 +1123,6 @@ 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]
@@ -995,6 +1130,12 @@ 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,
@@ -1018,7 +1159,6 @@ export const useSettingsState = () => {
     currentTerminalTheme,
     terminalFontFamilyId,
     setTerminalFontFamilyId,
-    currentTerminalFont,
     terminalFontSize,
     setTerminalFontSize,
     terminalSettings,
@@ -1045,6 +1185,10 @@ export const useSettingsState = () => {
     setSftpUseCompressedUpload,
     sftpAutoOpenSidebar,
     setSftpAutoOpenSidebar,
+    sftpDefaultViewMode,
+    setSftpDefaultViewMode,
+    sftpTransferConcurrency,
+    setSftpTransferConcurrency,
     // Editor Settings
     editorWordWrap,
     setEditorWordWrap: useCallback((enabled: boolean) => {
@@ -1052,7 +1196,6 @@ 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,
@@ -1071,6 +1214,9 @@ export const useSettingsState = () => {
     globalHotkeyEnabled,
     setGlobalHotkeyEnabled,
     rehydrateAllFromStorage,
+    reapplyCurrentTheme,
+    workspaceFocusStyle,
+    setWorkspaceFocusStyle,
     // Opaque version that changes when any synced setting changes, used by useAutoSync.
     // eslint-disable-next-line react-hooks/exhaustive-deps
     settingsVersion: useMemo(() => Math.random(), [
@@ -1078,8 +1224,8 @@ export const useSettingsState = () => {
       uiFontFamilyId, uiLanguage, customCSS,
       terminalThemeId, terminalFontFamilyId, terminalFontSize, terminalSettings,
       customKeyBindings, editorWordWrap,
-      sftpDoubleClickBehavior, sftpAutoSync, sftpShowHiddenFiles, sftpUseCompressedUpload, sftpAutoOpenSidebar,
-      customThemes,
+      sftpDoubleClickBehavior, sftpAutoSync, sftpShowHiddenFiles, sftpUseCompressedUpload, sftpAutoOpenSidebar, sftpDefaultViewMode,
+      customThemes, workspaceFocusStyle,
     ]),
   };
 };

application/state/useSftpFileAssociations.ts

@@ -3,10 +3,10 @@
  * Uses a shared state pattern to sync across components
  */
 import { useCallback, useEffect, useSyncExternalStore } from 'react';
-import { STORAGE_KEY_SFTP_FILE_ASSOCIATIONS } from '../../infrastructure/config/storageKeys';
+import { STORAGE_KEY_SFTP_FILE_ASSOCIATIONS, STORAGE_KEY_SFTP_DEFAULT_OPENER } from '../../infrastructure/config/storageKeys';
 import { localStorageAdapter } from '../../infrastructure/persistence/localStorageAdapter';
 import type { FileAssociation, FileOpenerType, SystemAppInfo } from '../../lib/sftpFileUtils';
-import { getFileExtension } from '../../lib/sftpFileUtils';
+import { getFileExtension, isKnownBinaryFile } from '../../lib/sftpFileUtils';
 
 export interface FileAssociationEntry {
   openerType: FileOpenerType;
@@ -17,10 +17,12 @@ export interface FileAssociationsMap {
   [extension: string]: FileAssociationEntry;
 }
 
-// Shared state and subscribers for cross-component synchronization
+// ---------------------------------------------------------------------------
+// Per-extension associations store
+// ---------------------------------------------------------------------------
+
 const subscribers = new Set<() => void>();
 
-// Use a wrapper object so we can update the reference for useSyncExternalStore
 let snapshotRef: { associations: FileAssociationsMap } = { associations: {} };
 
 function loadFromStorage(): FileAssociationsMap {
@@ -39,7 +41,6 @@ function loadFromStorage(): FileAssociationsMap {
   return {};
 }
 
-// Initialize from storage
 snapshotRef = { associations: loadFromStorage() };
 
 function saveToStorage(associations: FileAssociationsMap) {
@@ -47,7 +48,6 @@ function saveToStorage(associations: FileAssociationsMap) {
 }
 
 function updateAssociations(newAssociations: FileAssociationsMap) {
-  // Create new reference so useSyncExternalStore detects change
   snapshotRef = { associations: newAssociations };
   saveToStorage(newAssociations);
   subscribers.forEach(callback => callback());
@@ -62,15 +62,54 @@ function getSnapshot() {
   return snapshotRef;
 }
 
+// ---------------------------------------------------------------------------
+// Default opener store (separate from per-extension associations)
+// ---------------------------------------------------------------------------
+
+const defaultOpenerSubscribers = new Set<() => void>();
+
+let defaultOpenerSnapshot: { entry: FileAssociationEntry | null } = {
+  entry: localStorageAdapter.read<FileAssociationEntry>(STORAGE_KEY_SFTP_DEFAULT_OPENER) ?? null,
+};
+
+function subscribeDefaultOpener(callback: () => void) {
+  defaultOpenerSubscribers.add(callback);
+  return () => defaultOpenerSubscribers.delete(callback);
+}
+
+function getDefaultOpenerSnapshot() {
+  return defaultOpenerSnapshot;
+}
+
+function updateDefaultOpener(entry: FileAssociationEntry | null) {
+  defaultOpenerSnapshot = { entry };
+  if (entry) {
+    localStorageAdapter.write(STORAGE_KEY_SFTP_DEFAULT_OPENER, entry);
+  } else {
+    localStorageAdapter.remove(STORAGE_KEY_SFTP_DEFAULT_OPENER);
+  }
+  defaultOpenerSubscribers.forEach(callback => callback());
+}
+
+// ---------------------------------------------------------------------------
+// Hook
+// ---------------------------------------------------------------------------
+
 export function useSftpFileAssociations() {
   const snapshot = useSyncExternalStore(subscribe, getSnapshot, getSnapshot);
   const associations = snapshot.associations;
 
+  const defaultOpenerState = useSyncExternalStore(subscribeDefaultOpener, getDefaultOpenerSnapshot, getDefaultOpenerSnapshot);
+
   // Listen for storage events from other tabs/windows
   useEffect(() => {
     const handleStorage = (e: StorageEvent) => {
       if (e.key === STORAGE_KEY_SFTP_FILE_ASSOCIATIONS) {
         updateAssociations(loadFromStorage());
+      } else if (e.key === STORAGE_KEY_SFTP_DEFAULT_OPENER) {
+        updateDefaultOpener(
+          localStorageAdapter.read<FileAssociationEntry>(STORAGE_KEY_SFTP_DEFAULT_OPENER) ?? null,
+        );
       }
     };
     window.addEventListener('storage', handleStorage);
@@ -78,18 +117,46 @@ export function useSftpFileAssociations() {
   }, []);
 
   /**
-   * Get the opener entry for a file based on its extension
+   * Get the opener entry for a file based on its extension.
+   * Falls back to the default opener when no per-extension association exists.
    */
   const getOpenerForFile = useCallback((fileName: string): FileAssociationEntry | null => {
     const ext = getFileExtension(fileName);
-    return associations[ext] || null;
-  }, [associations]);
+    if (associations[ext]) return associations[ext];
+    // Fall back to default opener, but skip built-in editor for binary files
+    const fallback = defaultOpenerState.entry;
+    if (fallback && fallback.openerType === 'builtin-editor' && isKnownBinaryFile(fileName)) {
+      return null;
+    }
+    return fallback;
+  }, [associations, defaultOpenerState]);
+
+  /**
+   * Get the default (fallback) opener, if set.
+   */
+  const getDefaultOpener = useCallback((): FileAssociationEntry | null => {
+    return defaultOpenerState.entry;
+  }, [defaultOpenerState]);
+
+  /**
+   * Set the default opener used when no per-extension association exists.
+   */
+  const setDefaultOpener = useCallback((openerType: FileOpenerType, systemApp?: SystemAppInfo) => {
+    updateDefaultOpener({ openerType, systemApp });
+  }, []);
+
+  /**
+   * Remove the default opener.
+   */
+  const removeDefaultOpener = useCallback(() => {
+    updateDefaultOpener(null);
+  }, []);
 
   /**
    * Set the opener type for a specific extension
    */
   const setOpenerForExtension = useCallback((
-    extension: string, 
+    extension: string,
     openerType: FileOpenerType,
     systemApp?: SystemAppInfo
   ) => {
@@ -109,7 +176,7 @@ export function useSftpFileAssociations() {
   }, []);
 
   /**
-   * Get all associations as an array
+   * Get all per-extension associations as an array.
    */
   const getAllAssociations = useCallback((): FileAssociation[] => {
     return Object.entries(associations).map(([extension, entry]: [string, FileAssociationEntry]) => ({
@@ -129,6 +196,9 @@ export function useSftpFileAssociations() {
   return {
     associations,
     getOpenerForFile,
+    getDefaultOpener,
+    setDefaultOpener,
+    removeDefaultOpener,
     setOpenerForExtension,
     removeAssociation,
     getAllAssociations,

application/state/useSftpState.ts

@@ -57,6 +57,7 @@ export const useSftpState = (
     getActivePane,
     updateTab,
     updateActiveTab,
+    clearSelectionsExcept,
     setTabShowHiddenFiles,
     addTab,
     closeTab,
@@ -110,6 +111,30 @@ export const useSftpState = (
     }
   }, []);
 
+  const getPaneByConnectionId = useCallback((connectionId: string) => {
+    for (const tab of leftTabsRef.current.tabs) {
+      if (tab.connection?.id === connectionId) return tab;
+    }
+    for (const tab of rightTabsRef.current.tabs) {
+      if (tab.connection?.id === connectionId) return tab;
+    }
+    return null;
+  }, [leftTabsRef, rightTabsRef]);
+
+  const getTabByConnectionId = useCallback((connectionId: string) => {
+    for (const tab of leftTabsRef.current.tabs) {
+      if (tab.connection?.id === connectionId) {
+        return { side: "left" as const, tabId: tab.id, pane: tab };
+      }
+    }
+    for (const tab of rightTabsRef.current.tabs) {
+      if (tab.connection?.id === connectionId) {
+        return { side: "right" as const, tabId: tab.id, pane: tab };
+      }
+    }
+    return null;
+  }, [leftTabsRef, rightTabsRef]);
+
   // Ref to track pending reconnections to avoid multiple reconnect attempts
   const reconnectingRef = useRef<{ left: boolean; right: boolean }>({
     left: false,
@@ -183,10 +208,14 @@ export const useSftpState = (
     selectAll,
     getFilteredFiles,
     createDirectory,
+    createDirectoryAtPath,
     createFile,
+    createFileAtPath,
     deleteFiles,
     deleteFilesAtPath,
     renameFile,
+    renameFileAtPath,
+    moveEntriesToPath,
     changePermissions,
   } = useSftpPaneActions({
     hosts,
@@ -207,6 +236,7 @@ export const useSftpState = (
     listRemoteFiles,
     handleSessionError,
     isSessionError,
+    clearSelectionsExcept,
     dirCacheTtlMs: DIR_CACHE_TTL_MS,
   });
 
@@ -244,6 +274,7 @@ export const useSftpState = (
     conflicts,
     activeTransfersCount,
     startTransfer,
+    downloadToLocal,
     addExternalUpload,
     updateExternalUpload,
     cancelTransfer,
@@ -254,8 +285,13 @@ export const useSftpState = (
     resolveConflict,
   } = useSftpTransfers({
     getActivePane,
+    getPaneByConnectionId,
+    getTabByConnectionId,
+    updateTab,
     refresh,
+    clearCacheForConnection,
     sftpSessionsRef,
+    connectionCacheKeyMapRef,
     listLocalFiles,
     listRemoteFiles,
     handleSessionError,
@@ -305,15 +341,20 @@ export const useSftpState = (
     toggleSelection,
     rangeSelect,
     clearSelection,
+    clearSelectionsExcept,
     selectAll,
     setFilter,
     setFilenameEncoding,
     setShowHiddenFiles,
     createDirectory,
+    createDirectoryAtPath,
     createFile,
+    createFileAtPath,
     deleteFiles,
     deleteFilesAtPath,
     renameFile,
+    renameFileAtPath,
+    moveEntriesToPath,
     changePermissions,
     readTextFile,
     readBinaryFile,
@@ -324,6 +365,7 @@ export const useSftpState = (
     cancelExternalUpload,
     selectApplication,
     startTransfer,
+    downloadToLocal,
     addExternalUpload,
     updateExternalUpload,
     cancelTransfer,
@@ -332,6 +374,7 @@ export const useSftpState = (
     dismissTransfer,
     resolveConflict,
     getSftpIdForConnection,
+    reportSessionError: handleSessionError,
   });
   methodsRef.current = {
     getFilteredFiles,
@@ -352,15 +395,20 @@ export const useSftpState = (
     toggleSelection,
     rangeSelect,
     clearSelection,
+    clearSelectionsExcept,
     selectAll,
     setFilter,
     setFilenameEncoding,
     setShowHiddenFiles,
     createDirectory,
+    createDirectoryAtPath,
     createFile,
+    createFileAtPath,
     deleteFiles,
     deleteFilesAtPath,
     renameFile,
+    renameFileAtPath,
+    moveEntriesToPath,
     changePermissions,
     readTextFile,
     readBinaryFile,
@@ -371,6 +419,7 @@ export const useSftpState = (
     cancelExternalUpload,
     selectApplication,
     startTransfer,
+    downloadToLocal,
     addExternalUpload,
     updateExternalUpload,
     cancelTransfer,
@@ -379,6 +428,7 @@ export const useSftpState = (
     dismissTransfer,
     resolveConflict,
     getSftpIdForConnection,
+    reportSessionError: handleSessionError,
   };
 
   // Create stable method wrappers that call through methodsRef
@@ -402,6 +452,8 @@ export const useSftpState = (
     toggleSelection: (...args: Parameters<typeof toggleSelection>) => methodsRef.current.toggleSelection(...args),
     rangeSelect: (...args: Parameters<typeof rangeSelect>) => methodsRef.current.rangeSelect(...args),
     clearSelection: (...args: Parameters<typeof clearSelection>) => methodsRef.current.clearSelection(...args),
+    clearSelectionsExcept: (...args: Parameters<typeof clearSelectionsExcept>) =>
+      methodsRef.current.clearSelectionsExcept(...args),
     selectAll: (...args: Parameters<typeof selectAll>) => methodsRef.current.selectAll(...args),
     setFilter: (...args: Parameters<typeof setFilter>) => methodsRef.current.setFilter(...args),
     setFilenameEncoding: (...args: Parameters<typeof setFilenameEncoding>) =>
@@ -409,11 +461,17 @@ export const useSftpState = (
     setShowHiddenFiles: (...args: Parameters<typeof setShowHiddenFiles>) =>
       methodsRef.current.setShowHiddenFiles(...args),
     createDirectory: (...args: Parameters<typeof createDirectory>) => methodsRef.current.createDirectory(...args),
+    createDirectoryAtPath: (...args: Parameters<typeof createDirectoryAtPath>) =>
+      methodsRef.current.createDirectoryAtPath(...args),
     createFile: (...args: Parameters<typeof createFile>) => methodsRef.current.createFile(...args),
+    createFileAtPath: (...args: Parameters<typeof createFileAtPath>) =>
+      methodsRef.current.createFileAtPath(...args),
     deleteFiles: (...args: Parameters<typeof deleteFiles>) => methodsRef.current.deleteFiles(...args),
     deleteFilesAtPath: (...args: Parameters<typeof deleteFilesAtPath>) =>
       methodsRef.current.deleteFilesAtPath(...args),
     renameFile: (...args: Parameters<typeof renameFile>) => methodsRef.current.renameFile(...args),
+    renameFileAtPath: (...args: Parameters<typeof renameFileAtPath>) => methodsRef.current.renameFileAtPath(...args),
+    moveEntriesToPath: (...args: Parameters<typeof moveEntriesToPath>) => methodsRef.current.moveEntriesToPath(...args),
     changePermissions: (...args: Parameters<typeof changePermissions>) => methodsRef.current.changePermissions(...args),
     readTextFile: (...args: Parameters<typeof readTextFile>) => methodsRef.current.readTextFile(...args),
     readBinaryFile: (...args: Parameters<typeof readBinaryFile>) => methodsRef.current.readBinaryFile(...args),
@@ -425,6 +483,7 @@ export const useSftpState = (
     cancelExternalUpload: () => methodsRef.current.cancelExternalUpload(),
     selectApplication: () => methodsRef.current.selectApplication(),
     startTransfer: (...args: Parameters<typeof startTransfer>) => methodsRef.current.startTransfer(...args),
+    downloadToLocal: (...args: Parameters<typeof downloadToLocal>) => methodsRef.current.downloadToLocal(...args),
     addExternalUpload: (...args: Parameters<typeof addExternalUpload>) => methodsRef.current.addExternalUpload(...args),
     updateExternalUpload: (...args: Parameters<typeof updateExternalUpload>) => methodsRef.current.updateExternalUpload(...args),
     cancelTransfer: (...args: Parameters<typeof cancelTransfer>) => methodsRef.current.cancelTransfer(...args),
@@ -433,6 +492,7 @@ export const useSftpState = (
     dismissTransfer: (...args: Parameters<typeof dismissTransfer>) => methodsRef.current.dismissTransfer(...args),
     resolveConflict: (...args: Parameters<typeof resolveConflict>) => methodsRef.current.resolveConflict(...args),
     getSftpIdForConnection: (...args: Parameters<typeof getSftpIdForConnection>) => methodsRef.current.getSftpIdForConnection(...args),
+    reportSessionError: (...args: Parameters<typeof handleSessionError>) => methodsRef.current.reportSessionError(...args),
     activeFileWatchCountRef,
   }), [activeFileWatchCountRef]); // activeFileWatchCountRef is a stable ref
 

application/state/useStoredBoolean.ts

@@ -1,8 +1,10 @@
-import { useEffect, useState } from "react";
+import { useCallback, useEffect, useState } from "react";
 import { localStorageAdapter } from "../../infrastructure/persistence/localStorageAdapter";
 
 /**
  * Hook for persisting a boolean value to localStorage.
+ * Syncs across components in the same window via a custom event,
+ * and across windows via the native storage event.
  * @param storageKey - The key to use for localStorage
  * @param fallback - The default value if no stored value exists (defaults to false)
  * @returns A tuple of [value, setValue] similar to useState
@@ -16,9 +18,38 @@ export const useStoredBoolean = (
         return stored ?? fallback;
     });
 
-    useEffect(() => {
-        localStorageAdapter.writeBoolean(storageKey, value);
-    }, [storageKey, value]);
+    const setAndPersist = useCallback((next: boolean | ((prev: boolean) => boolean)) => {
+        setValue((prev) => {
+            const resolved = typeof next === "function" ? next(prev) : next;
+            localStorageAdapter.writeBoolean(storageKey, resolved);
+            // Notify other same-window consumers
+            window.dispatchEvent(
+                new CustomEvent("stored-boolean-change", { detail: { key: storageKey, value: resolved } }),
+            );
+            return resolved;
+        });
+    }, [storageKey]);
 
-    return [value, setValue] as const;
+    useEffect(() => {
+        // Sync from other components in the same window
+        const handleCustom = (e: Event) => {
+            const { key, value: newValue } = (e as CustomEvent).detail;
+            if (key === storageKey) setValue(newValue);
+        };
+        // Sync from other windows
+        const handleStorage = (e: StorageEvent) => {
+            if (e.key === storageKey) {
+                const stored = localStorageAdapter.readBoolean(storageKey);
+                setValue(stored ?? fallback);
+            }
+        };
+        window.addEventListener("stored-boolean-change", handleCustom);
+        window.addEventListener("storage", handleStorage);
+        return () => {
+            window.removeEventListener("stored-boolean-change", handleCustom);
+            window.removeEventListener("storage", handleStorage);
+        };
+    }, [storageKey, fallback]);
+
+    return [value, setAndPersist] as const;
 };

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

@@ -96,7 +96,7 @@ export const useTerminalBackend = () => {
     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, STORAGE_KEY_AUTO_UPDATE_ENABLED } 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
@@ -13,8 +13,7 @@ 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 (no-op in production)
 const debugLog = (..._args: unknown[]) => {};
@@ -44,6 +43,8 @@ export interface UseUpdateCheckResult {
   dismissUpdate: () => void;
   openReleasePage: () => void;
   installUpdate: () => void;
+  startDownload: () => void;
+  isUpdateDemoMode: boolean;
 }
 
 /**
@@ -514,6 +515,46 @@ export function useUpdateCheck(options?: { autoUpdateEnabled?: boolean }): UseUp
     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);
@@ -653,5 +694,7 @@ export function useUpdateCheck(options?: { autoUpdateEnabled?: boolean }): UseUp
     dismissUpdate,
     openReleasePage,
     installUpdate,
+    startDownload,
+    isUpdateDemoMode: IS_UPDATE_DEMO_MODE,
   };
 }

application/state/useVaultState.ts

@@ -2,6 +2,7 @@ import { useCallback, useEffect, useRef, useState } from "react";
 import { normalizeDistroId, sanitizeHost } from "../../domain/host";
 import {
   ConnectionLog,
+  GroupConfig,
   Host,
   Identity,
   KeyCategory,
@@ -17,6 +18,7 @@ import {
 } from "../../infrastructure/config/defaultData";
 import {
   STORAGE_KEY_CONNECTION_LOGS,
+  STORAGE_KEY_GROUP_CONFIGS,
   STORAGE_KEY_GROUPS,
   STORAGE_KEY_HOSTS,
   STORAGE_KEY_IDENTITIES,
@@ -30,9 +32,11 @@ import {
 } from "../../infrastructure/config/storageKeys";
 import { localStorageAdapter } from "../../infrastructure/persistence/localStorageAdapter";
 import {
+  decryptGroupConfigs,
   decryptHosts,
   decryptIdentities,
   decryptKeys,
+  encryptGroupConfigs,
   encryptHosts,
   encryptIdentities,
   encryptKeys,
@@ -46,6 +50,7 @@ type ExportableVaultData = {
   customGroups: string[];
   snippetPackages?: string[];
   knownHosts?: KnownHost[];
+  groupConfigs?: GroupConfig[];
 };
 
 type LegacyKeyRecord = Record<string, unknown> & { id?: string; source?: string };
@@ -107,6 +112,7 @@ export const useVaultState = () => {
   const [shellHistory, setShellHistory] = useState<ShellHistoryEntry[]>([]);
   const [connectionLogs, setConnectionLogs] = useState<ConnectionLog[]>([]);
   const [managedSources, setManagedSources] = useState<ManagedSource[]>([]);
+  const [groupConfigs, setGroupConfigs] = useState<GroupConfig[]>([]);
 
   // Write-version counters prevent out-of-order async writes from overwriting
   // newer data.  Each update bumps the counter; the .then() callback only
@@ -114,6 +120,7 @@ export const useVaultState = () => {
   const hostsWriteVersion = useRef(0);
   const keysWriteVersion = useRef(0);
   const identitiesWriteVersion = useRef(0);
+  const groupConfigsWriteVersion = useRef(0);
 
   // Read-sequence counters for cross-window storage events.  Each incoming
   // event bumps the counter; the async decrypt callback only applies state if
@@ -122,6 +129,7 @@ export const useVaultState = () => {
   const hostsReadSeq = useRef(0);
   const keysReadSeq = useRef(0);
   const identitiesReadSeq = useRef(0);
+  const groupConfigsReadSeq = useRef(0);
 
   const updateHosts = useCallback((data: Host[]) => {
     const cleaned = data.map(sanitizeHost);
@@ -176,6 +184,15 @@ export const useVaultState = () => {
     localStorageAdapter.write(STORAGE_KEY_MANAGED_SOURCES, data);
   }, []);
 
+  const updateGroupConfigs = useCallback((data: GroupConfig[]) => {
+    setGroupConfigs(data);
+    const ver = ++groupConfigsWriteVersion.current;
+    encryptGroupConfigs(data).then((enc) => {
+      if (ver === groupConfigsWriteVersion.current)
+        localStorageAdapter.write(STORAGE_KEY_GROUP_CONFIGS, enc);
+    });
+  }, []);
+
   const clearVaultData = useCallback(() => {
     updateHosts([]);
     updateKeys([]);
@@ -185,6 +202,7 @@ export const useVaultState = () => {
     updateCustomGroups([]);
     updateKnownHosts([]);
     updateManagedSources([]);
+    updateGroupConfigs([]);
     localStorageAdapter.remove(STORAGE_KEY_LEGACY_KEYS);
   }, [
     updateHosts,
@@ -195,6 +213,7 @@ export const useVaultState = () => {
     updateCustomGroups,
     updateKnownHosts,
     updateManagedSources,
+    updateGroupConfigs,
   ]);
 
   const addShellHistoryEntry = useCallback(
@@ -430,6 +449,20 @@ export const useVaultState = () => {
         STORAGE_KEY_MANAGED_SOURCES,
       );
       if (savedManagedSources) setManagedSources(savedManagedSources);
+
+      // Load group configs
+      const savedGroupConfigs = localStorageAdapter.read<GroupConfig[]>(STORAGE_KEY_GROUP_CONFIGS);
+      if (savedGroupConfigs) {
+        const gcVer = ++groupConfigsWriteVersion.current;
+        const decryptedGC = await decryptGroupConfigs(savedGroupConfigs);
+        if (gcVer === groupConfigsWriteVersion.current) {
+          setGroupConfigs(decryptedGC);
+          encryptGroupConfigs(decryptedGC).then((enc) => {
+            if (gcVer === groupConfigsWriteVersion.current)
+              localStorageAdapter.write(STORAGE_KEY_GROUP_CONFIGS, enc);
+          });
+        }
+      }
     };
 
     init();
@@ -529,6 +562,19 @@ export const useVaultState = () => {
       if (key === STORAGE_KEY_MANAGED_SOURCES) {
         const next = safeParse<ManagedSource[]>(event.newValue) ?? [];
         setManagedSources(next);
+        return;
+      }
+
+      if (key === STORAGE_KEY_GROUP_CONFIGS) {
+        const next = safeParse<GroupConfig[]>(event.newValue) ?? [];
+        ++groupConfigsWriteVersion.current;
+        const seq = ++groupConfigsReadSeq.current;
+        const writeAtStart = groupConfigsWriteVersion.current;
+        decryptGroupConfigs(next).then((dec) => {
+          if (seq === groupConfigsReadSeq.current && writeAtStart === groupConfigsWriteVersion.current)
+            setGroupConfigs(dec);
+        });
+        return;
       }
     };
 
@@ -536,6 +582,20 @@ export const useVaultState = () => {
     return () => window.removeEventListener("storage", handleStorage);
   }, []);
 
+  const updateHostLastConnected = useCallback((hostId: string) => {
+    setHosts((prev) => {
+      const next = prev.map((h) =>
+        h.id === hostId ? { ...h, lastConnectedAt: Date.now() } : h,
+      );
+      const ver = ++hostsWriteVersion.current;
+      encryptHosts(next).then((enc) => {
+        if (ver === hostsWriteVersion.current)
+          localStorageAdapter.write(STORAGE_KEY_HOSTS, enc);
+      });
+      return next;
+    });
+  }, []);
+
   const updateHostDistro = useCallback((hostId: string, distro: string) => {
     const normalized = normalizeDistroId(distro);
     setHosts((prev) => {
@@ -560,8 +620,9 @@ export const useVaultState = () => {
       customGroups,
       snippetPackages,
       knownHosts,
+      groupConfigs,
     }),
-    [hosts, keys, identities, snippets, customGroups, snippetPackages, knownHosts],
+    [hosts, keys, identities, snippets, customGroups, snippetPackages, knownHosts, groupConfigs],
   );
 
   const importData = useCallback(
@@ -573,6 +634,7 @@ export const useVaultState = () => {
       if (payload.customGroups) updateCustomGroups(payload.customGroups);
       if (payload.snippetPackages) updateSnippetPackages(payload.snippetPackages);
       if (payload.knownHosts) updateKnownHosts(payload.knownHosts);
+      if (Array.isArray(payload.groupConfigs)) updateGroupConfigs(payload.groupConfigs);
     },
     [
       updateHosts,
@@ -582,6 +644,7 @@ export const useVaultState = () => {
       updateCustomGroups,
       updateSnippetPackages,
       updateKnownHosts,
+      updateGroupConfigs,
     ],
   );
 
@@ -604,6 +667,7 @@ export const useVaultState = () => {
     shellHistory,
     connectionLogs,
     managedSources,
+    groupConfigs,
     updateHosts,
     updateKeys,
     updateIdentities,
@@ -612,6 +676,7 @@ export const useVaultState = () => {
     updateCustomGroups,
     updateKnownHosts,
     updateManagedSources,
+    updateGroupConfigs,
     addShellHistoryEntry,
     clearShellHistory,
     addConnectionLog,
@@ -620,6 +685,7 @@ export const useVaultState = () => {
     deleteConnectionLog,
     clearUnsavedConnectionLogs,
     updateHostDistro,
+    updateHostLastConnected,
     convertKnownHostToHost,
     exportData,
     importDataFromString,

application/syncPayload.ts

@@ -8,15 +8,18 @@
  */
 
 import type {
+  GroupConfig,
   Host,
   Identity,
   KnownHost,
   PortForwardingRule,
+  SftpBookmark,
   Snippet,
   SSHKey,
-} from './models';
-import type { SyncPayload } from './sync';
+} from '../domain/models';
+import type { SyncPayload } from '../domain/sync';
 import { localStorageAdapter } from '../infrastructure/persistence/localStorageAdapter';
+import { rehydrateGlobalBookmarks } from '../components/sftp/hooks/useGlobalSftpBookmarks';
 import {
   STORAGE_KEY_THEME,
   STORAGE_KEY_UI_THEME_LIGHT,
@@ -37,7 +40,9 @@ import {
   STORAGE_KEY_SFTP_SHOW_HIDDEN_FILES,
   STORAGE_KEY_SFTP_USE_COMPRESSED_UPLOAD,
   STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR,
+  STORAGE_KEY_SFTP_GLOBAL_BOOKMARKS,
   STORAGE_KEY_CUSTOM_THEMES,
+  STORAGE_KEY_SHOW_RECENT_HOSTS,
 } from '../infrastructure/config/storageKeys';
 
 // ---------------------------------------------------------------------------
@@ -53,6 +58,7 @@ export interface SyncableVaultData {
   customGroups: string[];
   snippetPackages?: string[];
   knownHosts: KnownHost[];
+  groupConfigs?: GroupConfig[];
 }
 
 /** Callbacks used by `applySyncPayload` to import data into local state. */
@@ -74,9 +80,12 @@ 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;
 
 /**
@@ -157,6 +166,14 @@ export function collectSyncableSettings(): SyncPayload['settings'] {
   const autoOpenSidebar = localStorageAdapter.readString(STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR);
   if (autoOpenSidebar === 'true' || autoOpenSidebar === 'false') settings.sftpAutoOpenSidebar = autoOpenSidebar === 'true';
 
+  // SFTP Bookmarks (global only — local bookmarks are device-specific)
+  const globalBookmarks = localStorageAdapter.read<SftpBookmark[]>(STORAGE_KEY_SFTP_GLOBAL_BOOKMARKS);
+  if (globalBookmarks && Array.isArray(globalBookmarks)) settings.sftpGlobalBookmarks = globalBookmarks;
+
+
+  const showRecent = localStorageAdapter.readBoolean(STORAGE_KEY_SHOW_RECENT_HOSTS);
+  if (showRecent != null) settings.showRecentHosts = showRecent;
+
   return Object.keys(settings).length > 0 ? settings : undefined;
 }
 
@@ -215,6 +232,12 @@ function applySyncableSettings(settings: NonNullable<SyncPayload['settings']>):
   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));
+
+  // SFTP Bookmarks (global only)
+  if (settings.sftpGlobalBookmarks != null) localStorageAdapter.write(STORAGE_KEY_SFTP_GLOBAL_BOOKMARKS, settings.sftpGlobalBookmarks);
+
+  // Immersive mode (legacy — always enabled, ignore incoming value)
+  if (settings.showRecentHosts != null) localStorageAdapter.writeBoolean(STORAGE_KEY_SHOW_RECENT_HOSTS, settings.showRecentHosts);
 }
 
 // ---------------------------------------------------------------------------
@@ -240,6 +263,7 @@ export function buildSyncPayload(
     customGroups: vault.customGroups,
     snippetPackages: vault.snippetPackages,
     knownHosts: vault.knownHosts,
+    groupConfigs: vault.groupConfigs,
     portForwardingRules,
     settings: collectSyncableSettings(),
     syncedAt: Date.now(),
@@ -273,6 +297,9 @@ export function applySyncPayload(
   if (payload.knownHosts !== undefined) {
     vaultImport.knownHosts = payload.knownHosts;
   }
+  if (Array.isArray(payload.groupConfigs)) {
+    vaultImport.groupConfigs = payload.groupConfigs;
+  }
 
   importers.importVaultData(JSON.stringify(vaultImport));
 
@@ -287,6 +314,8 @@ export function applySyncPayload(
   // Apply synced settings
   if (payload.settings) {
     applySyncableSettings(payload.settings);
+    // Rehydrate in-memory bookmark snapshot after localStorage was updated
+    if (payload.settings.sftpGlobalBookmarks != null) rehydrateGlobalBookmarks();
     importers.onSettingsApplied?.();
   }
 }

components/AIChatSidePanel.tsx

@@ -21,6 +21,7 @@ import { useI18n } from '../application/i18n/I18nProvider';
 import { useWindowControls } from '../application/state/useWindowControls';
 import { useFileUpload } from '../application/state/useFileUpload';
 import type {
+  AgentModelPreset,
   AIPermissionMode,
   AISession,
   AISessionScope,
@@ -43,6 +44,20 @@ import { clearAllPendingApprovals } from '../infrastructure/ai/shared/approvalGa
 import { useConversationExport } from './ai/hooks/useConversationExport';
 import type { ExecutorContext } from '../infrastructure/ai/cattyAgent/executor';
 
+function isCopilotAgentConfig(agent?: ExternalAgentConfig): boolean {
+  if (!agent) return false;
+  const tokens = [
+    agent.id,
+    agent.name,
+    agent.icon,
+    agent.command,
+    agent.acpCommand,
+  ]
+    .filter((value): value is string => typeof value === 'string' && value.length > 0)
+    .map((value) => value.split('/').pop()?.toLowerCase() ?? value.toLowerCase());
+  return tokens.some((token) => token.includes('copilot'));
+}
+
 // -------------------------------------------------------------------
 // Props
 // -------------------------------------------------------------------
@@ -56,6 +71,7 @@ interface AIChatSidePanelProps {
   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,
@@ -103,6 +119,7 @@ interface AIChatSidePanelProps {
     username?: string;
     protocol?: string;
     shellType?: string;
+    deviceType?: string;
     connected: boolean;
   }>;
   resolveExecutorContext?: (scope: {
@@ -152,6 +169,27 @@ function buildAcpHistoryMessages(messages: ChatMessage[]): Array<{ role: 'user'
   });
 }
 
+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
 // -------------------------------------------------------------------
@@ -164,6 +202,7 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
   deleteSession,
   updateSessionTitle,
   updateSessionExternalSessionId,
+  retargetSessionScope,
   addMessageToSession,
   updateLastMessage,
   updateMessageById,
@@ -227,21 +266,115 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
 
 
   // Per-scope active session ID
-  const activeSessionId = activeSessionIdMap[scopeKey] ?? null;
-  const isStreaming = activeSessionId ? streamingSessionIds.has(activeSessionId) : false;
+  const activeSessionIdForScope = activeSessionIdMap[scopeKey] ?? null;
   const setActiveSessionId = useCallback((id: string | null) => {
     setActiveSessionIdForScope(scopeKey, id);
   }, [scopeKey, setActiveSessionIdForScope]);
 
-  // Restore agent selector from active session when scope changes
-  useEffect(() => {
-    if (activeSessionId) {
-      const session = sessions.find((s) => s.id === activeSessionId);
-      if (session) {
-        setCurrentAgentId(session.agentId);
+  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;
       }
     }
-  }, [scopeKey, activeSessionId, sessions]);
+    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(() => {
@@ -294,12 +427,6 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
     [enableAgent, setExternalAgents],
   );
 
-  // Active session (scoped)
-  const activeSession = useMemo(
-    () => sessions.find((s) => s.id === activeSessionId) ?? null,
-    [sessions, activeSessionId],
-  );
-
   const messages = activeSession?.messages ?? [];
 
   // ── Export hook ──
@@ -313,15 +440,62 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
 
   const providerDisplayName = activeProvider?.name ?? '';
   const modelDisplayName = activeModelId || activeProvider?.defaultModel || '';
+  const [runtimeAgentModelPresets, setRuntimeAgentModelPresets] = useState<Record<string, AgentModelPreset[]>>({});
 
   // Agent model presets for the current external agent
   const currentAgentConfig = useMemo(
     () => currentAgentId !== 'catty' ? externalAgents.find(a => a.id === currentAgentId) : undefined,
     [currentAgentId, externalAgents],
   );
+  const isCopilotExternalAgent = useMemo(
+    () => isCopilotAgentConfig(currentAgentConfig),
+    [currentAgentConfig],
+  );
+
+  // Ref to read agentModelMap inside the effect without re-triggering it
+  // when setAgentModel updates the map (avoids double ACP spawn).
+  const agentModelMapRef = useRef(agentModelMap);
+  agentModelMapRef.current = agentModelMap;
+
+  useEffect(() => {
+    if (!currentAgentConfig?.acpCommand) return;
+    if (!isCopilotExternalAgent) return;
+
+    const bridge = getNetcattyBridge();
+    if (!bridge?.aiAcpListModels) return;
+
+    let cancelled = false;
+    void bridge.aiAcpListModels(
+      currentAgentConfig.acpCommand,
+      currentAgentConfig.acpArgs || [],
+      undefined,
+      undefined,
+      `models_${currentAgentId}`,
+    ).then((result) => {
+      if (cancelled || !result?.ok || !Array.isArray(result.models)) return;
+      const knownModelIds = new Set(result.models.map((model) => model.id));
+      setRuntimeAgentModelPresets((prev) => ({
+        ...prev,
+        [currentAgentId]: result.models ?? [],
+      }));
+      const storedModelId = agentModelMapRef.current[currentAgentId];
+      if (result.currentModelId && (!storedModelId || !knownModelIds.has(storedModelId))) {
+        setAgentModel(currentAgentId, result.currentModelId);
+      }
+    }).catch((err) => {
+      if (!cancelled) {
+        console.warn('[AIChatSidePanel] Failed to load ACP agent models:', err);
+      }
+    });
+
+    return () => {
+      cancelled = true;
+    };
+  }, [currentAgentConfig, currentAgentId, isCopilotExternalAgent, setAgentModel]);
+
   const agentModelPresets = useMemo(
-    () => getAgentModelPresets(currentAgentConfig?.command),
-    [currentAgentConfig?.command],
+    () => runtimeAgentModelPresets[currentAgentId] ?? getAgentModelPresets(currentAgentConfig?.command),
+    [currentAgentId, currentAgentConfig?.command, runtimeAgentModelPresets],
   );
 
   // Per-agent model: recall last selection or use first preset as default
@@ -345,15 +519,6 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
     setAgentModel(currentAgentId, modelId);
   }, [currentAgentId, setAgentModel]);
 
-  // Filtered sessions for history (matching current scope type)
-  const historySessions = useMemo(
-    () =>
-      sessions
-        .filter((s) => s.scope.type === scopeType && s.scope.targetId === scopeTargetId)
-        .sort((a, b) => b.updatedAt - a.updatedAt),
-    [sessions, scopeType, scopeTargetId],
-  );
-
   // -------------------------------------------------------------------
   // Handlers
   // -------------------------------------------------------------------
@@ -420,12 +585,34 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
 
   /** Ensure a session exists for the current scope and return its ID. */
   const ensureSession = useCallback((): string => {
-    if (activeSessionId) return activeSessionId;
+    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;
-  }, [activeSessionId, scopeType, scopeTargetId, scopeHostIds, currentAgentId, createSession, setActiveSessionId]);
+  }, [
+    activeSession,
+    activeSessionIdForScope,
+    createSession,
+    currentAgentId,
+    retargetSessionScope,
+    scopeHostIds,
+    scopeTargetId,
+    scopeType,
+    setActiveSessionId,
+    shouldRetargetActiveSession,
+  ]);
 
   // -------------------------------------------------------------------
   // Main send handler (thin orchestrator)
@@ -468,7 +655,9 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
     const assistantMsgId = generateId();
     addMessageToSession(sessionId, {
       id: assistantMsgId, role: 'assistant', content: '', timestamp: Date.now(),
-      model: isExternalAgent ? (agentConfig?.name || 'external') : (activeModelId || activeProvider?.defaultModel || ''),
+      model: isExternalAgent
+        ? (selectedAgentModel || agentConfig?.name || 'external')
+        : (activeModelId || activeProvider?.defaultModel || ''),
       providerId: isExternalAgent ? undefined : activeProvider?.providerId,
     });
 
@@ -543,6 +732,10 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
     }));
     // 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(
@@ -582,7 +775,7 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
   if (!isVisible) return null;
 
   return (
-    <div className="flex flex-col h-full bg-background">
+    <div className="flex flex-col h-full bg-background" data-section="ai-chat-panel">
       {/* ── Header ── */}
       <div className="px-2.5 py-1.5 flex items-center justify-between border-b border-border/50 shrink-0">
         <AgentSelector
@@ -741,9 +934,12 @@ const SessionHistoryDrawer: React.FC<SessionHistoryDrawerProps> = ({
               const timeStr = formatRelativeTime(time, t);
 
               return (
-                <button
+                <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',
@@ -764,7 +960,7 @@ const SessionHistoryDrawer: React.FC<SessionHistoryDrawerProps> = ({
                       <Trash2 size={12} />
                     </button>
                   </div>
-                </button>
+                </div>
               );
             })
           )}

components/CloudSyncSettings.tsx

@@ -102,11 +102,14 @@ interface StatusDotProps {
 }
 
 const StatusDot: React.FC<StatusDotProps> = ({ status, className }) => {
+    if (status === 'connecting') {
+        return <Loader2 className={cn('w-3.5 h-3.5 animate-spin text-muted-foreground', className)} />;
+    }
+
     const colors = {
         connected: 'bg-green-500',
         syncing: 'bg-blue-500 animate-pulse',
         error: 'bg-red-500',
-        connecting: 'bg-yellow-500 animate-pulse',
         disconnected: 'bg-muted-foreground/50',
     };
 
@@ -279,6 +282,7 @@ interface ProviderCardProps {
     disabled?: boolean; // Disable connect button when another provider is connected
     onEdit?: () => void;
     onConnect: () => void;
+    onCancelConnect?: () => void;
     onDisconnect: () => void;
     onSync: () => void;
 }
@@ -296,6 +300,7 @@ const ProviderCard: React.FC<ProviderCardProps> = ({
     disabled,
     onEdit,
     onConnect,
+    onCancelConnect,
     onDisconnect,
     onSync,
 }) => {
@@ -367,7 +372,9 @@ const ProviderCard: React.FC<ProviderCardProps> = ({
                         {error}
                     </p>
                 ) : (
-                    <p className="text-xs text-muted-foreground mt-1">{t('cloudSync.provider.notConnected')}</p>
+                    <p className="text-xs text-muted-foreground mt-1">
+                        {isConnecting ? t('cloudSync.provider.connecting') : t('cloudSync.provider.notConnected')}
+                    </p>
                 )}
             </div>
 
@@ -408,6 +415,16 @@ const ProviderCard: React.FC<ProviderCardProps> = ({
                             <CloudOff size={14} />
                         </Button>
                     </>
+                ) : isConnecting && onCancelConnect ? (
+                    <Button
+                        size="sm"
+                        variant="outline"
+                        onClick={onCancelConnect}
+                        className="gap-1"
+                    >
+                        <X size={14} />
+                        {t('common.cancel')}
+                    </Button>
                 ) : (
                     <Button
                         size="sm"
@@ -611,7 +628,7 @@ interface SyncDashboardProps {
     onClearLocalData?: () => void;
 }
 
-export const SyncDashboard: React.FC<SyncDashboardProps> = ({
+const SyncDashboard: React.FC<SyncDashboardProps> = ({
     onBuildPayload,
     onApplyPayload,
     onClearLocalData,
@@ -800,6 +817,9 @@ 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'));
         }
@@ -813,10 +833,13 @@ 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'));
+            }
         }
     };
 
@@ -828,10 +851,13 @@ 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'));
+            }
         }
     };
 
@@ -1079,6 +1105,7 @@ export const SyncDashboard: React.FC<SyncDashboardProps> = ({
                         error={sync.providers.google.error}
                         disabled={sync.hasAnyConnectedProvider && !isProviderReadyForSync(sync.providers.google)}
                         onConnect={handleConnectGoogle}
+                        onCancelConnect={sync.cancelOAuthConnect}
                         onDisconnect={() => sync.disconnectProvider('google')}
                         onSync={() => handleSync('google')}
                     />
@@ -1095,6 +1122,7 @@ export const SyncDashboard: React.FC<SyncDashboardProps> = ({
                         error={sync.providers.onedrive.error}
                         disabled={sync.hasAnyConnectedProvider && !isProviderReadyForSync(sync.providers.onedrive)}
                         onConnect={handleConnectOneDrive}
+                        onCancelConnect={sync.cancelOAuthConnect}
                         onDisconnect={() => sync.disconnectProvider('onedrive')}
                         onSync={() => handleSync('onedrive')}
                     />
@@ -1250,6 +1278,9 @@ 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

@@ -65,8 +65,8 @@ const DistroAvatarInner: React.FC<DistroAvatarProps> = ({
 
   // Size variants - all use rounded corners for consistency
   const sizeClasses = {
-    sm: "h-6 w-6 rounded-md",
-    md: "h-11 w-11 rounded-xl",
+    sm: "h-6 w-6 rounded",
+    md: "h-11 w-11 rounded-lg",
     lg: "h-14 w-14 rounded-xl",
   };
   const iconSizes = {
@@ -98,7 +98,7 @@ const DistroAvatarInner: React.FC<DistroAvatarProps> = ({
       <div
         className={cn(
           containerClass,
-          "flex items-center justify-center border border-border/40 overflow-hidden",
+          "flex items-center justify-center overflow-hidden",
           bg,
           className,
         )}

components/HostDetailsPanel.tsx

@@ -20,14 +20,17 @@ 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 { useSettingsState } from "../application/state/useSettingsState";
 import { getEffectiveHostDistro, LINUX_DISTRO_OPTIONS } from "../domain/host";
 import { customThemeStore } from "../application/state/customThemeStore";
 import {
@@ -48,6 +51,7 @@ import {
   AsidePanel,
   AsidePanelContent,
   AsidePanelFooter,
+  type AsidePanelLayout,
 } from "./ui/aside-panel";
 import { Badge } from "./ui/badge";
 import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from "./ui/tooltip";
@@ -69,7 +73,7 @@ import {
   ProxyPanel,
 } from "./host-details";
 
-type CredentialType = "sshid" | "key" | "certificate" | null;
+type CredentialType = "sshid" | "key" | "certificate" | "localKeyFile" | null;
 type SubPanel =
   | "none"
   | "create-group"
@@ -90,10 +94,14 @@ 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
   onCreateTag?: (tag: string) => void; // Callback to create a new tag
+  groupDefaults?: Partial<import('../domain/models').GroupConfig>;
+  layout?: AsidePanelLayout;
 }
 
 const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
@@ -105,14 +113,17 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
   allTags = [],
   allHosts = [],
   defaultGroup,
+  terminalThemeId,
+  terminalFontSize,
   onSave,
   onCancel,
   onCreateGroup,
   onCreateTag,
+  groupDefaults,
+  layout = "overlay",
 }) => {
   const { t } = useI18n();
   const { checkSshAgent } = useApplicationBackend();
-  const { terminalThemeId, terminalFontSize } = useSettingsState();
   const [form, setForm] = useState<Host>(
     () =>
       initialData ||
@@ -120,13 +131,13 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         id: crypto.randomUUID(),
         label: "",
         hostname: "",
-        port: 22,
-        username: "root",
+        port: groupDefaults?.port ? undefined : 22,
+        username: groupDefaults?.username ? "" : "root",
         protocol: "ssh",
         tags: [],
         os: "linux",
         authMethod: "password",
-        charset: "UTF-8",
+        charset: groupDefaults?.charset ? undefined : "UTF-8",
         distroMode: "auto",
         createdAt: Date.now(),
         group: defaultGroup || undefined, // Pre-fill with current navigation group
@@ -147,6 +158,9 @@ 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("");
@@ -273,12 +287,10 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
   };
 
   const removeHostFromChain = (index: number) => {
-    setForm((prev) => ({
-      ...prev,
-      hostChain: {
-        hostIds: (prev.hostChain?.hostIds || []).filter((_, i) => i !== index),
-      },
-    }));
+    setForm((prev) => {
+      const ids = (prev.hostChain?.hostIds || []).filter((_, i) => i !== index);
+      return { ...prev, hostChain: ids.length > 0 ? { hostIds: ids } : undefined };
+    });
   };
 
   const clearHostChain = useCallback(() => {
@@ -304,12 +316,10 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
   };
 
   const removeEnvVar = (index: number) => {
-    setForm((prev) => ({
-      ...prev,
-      environmentVariables: (prev.environmentVariables || []).filter(
-        (_, i) => i !== index,
-      ),
-    }));
+    setForm((prev) => {
+      const filtered = (prev.environmentVariables || []).filter((_, i) => i !== index);
+      return { ...prev, environmentVariables: filtered.length > 0 ? filtered : undefined };
+    });
   };
 
   const handleSubmit = () => {
@@ -354,7 +364,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
       label: finalLabel,
       group: finalGroup,
       tags: form.tags || [],
-      port: form.port || 22,
+      port: form.port ?? (groupDefaults?.port ? undefined : 22),
       // Clear password if savePassword is explicitly set to false
       password: form.savePassword === false ? undefined : form.password,
       managedSourceId: finalManagedSourceId,
@@ -469,6 +479,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         authMethod: identity.authMethod,
         password: undefined,
         identityFileId: undefined,
+        identityFilePaths: undefined,
       }));
       setSelectedCredentialType(null);
       setCredentialPopoverOpen(false);
@@ -494,6 +505,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         onSave={handleCreateGroup}
         onBack={() => setActiveSubPanel("none")}
         onCancel={onCancel}
+        layout={layout}
       />
     );
   }
@@ -506,6 +518,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         onClearProxy={clearProxyConfig}
         onBack={() => setActiveSubPanel("none")}
         onCancel={onCancel}
+        layout={layout}
       />
     );
   }
@@ -523,6 +536,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         onClearChain={clearHostChain}
         onBack={() => setActiveSubPanel("none")}
         onCancel={onCancel}
+        layout={layout}
       />
     );
   }
@@ -551,6 +565,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         }}
         onBack={() => setActiveSubPanel("none")}
         onCancel={onCancel}
+        layout={layout}
       />
     );
   }
@@ -568,6 +583,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         onClose={onCancel}
         onBack={() => setActiveSubPanel("none")}
         showBackButton={true}
+        layout={layout}
       />
     );
   }
@@ -606,6 +622,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         onClose={onCancel}
         onBack={() => setActiveSubPanel("none")}
         showBackButton={true}
+        layout={layout}
       />
     );
   }
@@ -615,6 +632,9 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
     <AsidePanel
       open={true}
       onClose={onCancel}
+      width="w-[420px]"
+      layout={layout}
+      dataSection="host-details-panel"
       title={
         initialData ? t("hostDetails.title.details") : t("hostDetails.title.new")
       }
@@ -728,7 +748,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
           </div>
         </Card>
 
-        <Card className="p-3 space-y-3 bg-card border-border/80">
+        <Card className="p-3 space-y-3 bg-card border-border/80 overflow-hidden">
           <div className="flex items-center gap-2">
             <KeyRound size={14} className="text-muted-foreground" />
             <p className="text-xs font-semibold">
@@ -741,8 +761,9 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
               <div className="ml-auto w-1/2 min-w-0 flex items-center gap-2 justify-end">
                 <Input
                   type="number"
-                  value={form.port}
-                  onChange={(e) => update("port", Number(e.target.value))}
+                  value={form.port ?? ""}
+                  onChange={(e) => update("port", e.target.value ? Number(e.target.value) : undefined)}
+                  placeholder={groupDefaults?.port ? String(groupDefaults.port) : "22"}
                   className="h-8 flex-1 min-w-0 text-center"
                 />
                 <span className="text-xs text-muted-foreground">
@@ -794,7 +815,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                 if (!hasIdentities) {
                   return (
                     <Input
-                      placeholder={t("hostDetails.username.placeholder")}
+                      placeholder={groupDefaults?.username || t("hostDetails.username.placeholder")}
                       value={form.username}
                       onChange={(e) => update("username", e.target.value)}
                       className="h-10"
@@ -813,7 +834,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                     <PopoverTrigger asChild>
                       <div className="relative">
                         <Input
-                          placeholder={t("hostDetails.username.placeholder")}
+                          placeholder={groupDefaults?.username || t("hostDetails.username.placeholder")}
                           value={form.username}
                           onChange={(e) => {
                             const next = e.target.value;
@@ -969,6 +990,31 @@ 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 overflow-hidden">
+                    <FileKey size={14} className="text-primary shrink-0" />
+                    <span className="text-xs w-0 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">
@@ -1046,6 +1092,20 @@ 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>
@@ -1067,6 +1127,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                     onValueChange={(val) => {
                       update("identityFileId", val);
                       update("authMethod", "key");
+                      update("identityFilePaths", undefined);
                       setSelectedCredentialType(null);
                     }}
                     placeholder={t("hostDetails.keys.search")}
@@ -1102,6 +1163,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                     onValueChange={(val) => {
                       update("identityFileId", val);
                       update("authMethod", "certificate");
+                      update("identityFilePaths", undefined);
                       setSelectedCredentialType(null);
                     }}
                     placeholder={t("hostDetails.certs.search")}
@@ -1121,6 +1183,67 @@ 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 min-w-0">
+                    <input
+                      type="text"
+                      className="flex-1 min-w-0 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>
 
@@ -1150,18 +1273,20 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
               {t("hostDetails.sftp.sudo.passwordWarning")}
             </p>
           )}
-          <div className="space-y-1">
-            <div className="text-sm font-medium">
-              {t("hostDetails.sftp.encoding")}
-            </div>
-            <div className="text-xs text-muted-foreground">
-              {t("hostDetails.sftp.encoding.desc")}
+          <div className="flex items-center justify-between gap-4">
+            <div className="space-y-0.5">
+              <div className="text-sm font-medium">
+                {t("hostDetails.sftp.encoding")}
+              </div>
+              <div className="text-xs text-muted-foreground">
+                {t("hostDetails.sftp.encoding.desc")}
+              </div>
             </div>
             <Select
               value={form.sftpEncoding || "auto"}
               onValueChange={(val) => update("sftpEncoding", val as Host["sftpEncoding"])}
             >
-              <SelectTrigger className="h-8">
+              <SelectTrigger className="h-8 w-28">
                 <SelectValue placeholder={t("sftp.encoding.label")} />
               </SelectTrigger>
               <SelectContent>
@@ -1173,6 +1298,111 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
           </div>
         </Card>
 
+        {form.os === "linux" && (
+          <Card className="p-3 space-y-3 bg-card border-border/80">
+            <div className="flex items-center gap-2">
+              <img src="/distro/linux.svg" alt="Linux" className="h-3.5 w-3.5 opacity-70 dark:invert" />
+              <p className="text-xs font-semibold">{t("hostDetails.distro.title")}</p>
+            </div>
+            <p className="text-xs text-muted-foreground">{t("hostDetails.distro.desc")}</p>
+
+            <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>
+          </Card>
+        )}
+
         <Card className="p-3 space-y-3 bg-card border-border/80">
           <div className="flex items-center gap-2">
             <Palette size={14} className="text-muted-foreground" />
@@ -1181,113 +1411,6 @@ 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"
@@ -1404,7 +1527,15 @@ 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>
 
@@ -1437,6 +1568,32 @@ 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">
@@ -1459,6 +1616,17 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
               </p>
             </div>
           )}
+          <div className="flex items-center justify-between">
+            <p className="text-xs text-muted-foreground">{t("hostDetails.backspaceBehavior")}</p>
+            <select
+              className="h-8 rounded-md border border-input bg-background px-2 text-xs"
+              value={form.backspaceBehavior ?? ""}
+              onChange={(e) => update("backspaceBehavior", e.target.value || undefined)}
+            >
+              <option value="">{t("hostDetails.backspaceBehavior.default")}</option>
+              <option value="ctrl-h">^H (0x08)</option>
+            </select>
+          </div>
         </Card>
 
         {/* Proxy via Hosts (Jump Hosts / ProxyJump) */}
@@ -1608,7 +1776,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                 className="text-muted-foreground hover:text-destructive flex-shrink-0 ml-auto"
                 onClick={(e) => {
                   e.stopPropagation();
-                  setForm((prev) => ({ ...prev, environmentVariables: [] }));
+                  setForm((prev) => ({ ...prev, environmentVariables: undefined }));
                 }}
               />
             </button>
@@ -1631,7 +1799,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
             <p className="text-xs font-semibold">{t("hostDetails.startupCommand")}</p>
           </div>
           <Textarea
-            placeholder={t("hostDetails.startupCommand.placeholder")}
+            placeholder={groupDefaults?.startupCommand || t("hostDetails.startupCommand.placeholder")}
             value={form.startupCommand || ""}
             onChange={(e) => update("startupCommand", e.target.value)}
             className="min-h-[80px] font-mono text-sm"
@@ -1695,7 +1863,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
 
             {/* Telnet Charset */}
             <Input
-              placeholder={t("hostDetails.charset.placeholder")}
+              placeholder={groupDefaults?.charset || t("hostDetails.charset.placeholder")}
               value={form.charset || "UTF-8"}
               onChange={(e) => update("charset", e.target.value)}
               className="h-10"

components/HostTreeView.tsx

@@ -1,4 +1,4 @@
-import { CheckSquare, ChevronRight, FileSymlink, Folder, FolderOpen, Monitor, Server, Square, Expand, Minimize2 } from 'lucide-react';
+import { CheckSquare, ChevronRight, Edit2, FileSymlink, Folder, FolderOpen, Monitor, Server, Square, Expand, Minimize2 } from 'lucide-react';
 import React, { useMemo } from 'react';
 import { useI18n } from '../application/i18n/I18nProvider';
 import { useTreeExpandedState } from '../application/state/useTreeExpandedState';
@@ -32,9 +32,12 @@ interface HostTreeViewProps {
   moveGroup: (sourcePath: string, targetPath: string) => void;
   managedGroupPaths?: Set<string>;
   onUnmanageGroup?: (groupPath: string) => void;
+
   isMultiSelectMode?: boolean;
   selectedHostIds?: Set<string>;
   toggleHostSelection?: (hostId: string) => void;
+  getDropTargetClasses?: (target: string) => string;
+  setDragOverDropTarget?: (target: string | null) => void;
 }
 
 interface TreeNodeProps {
@@ -56,9 +59,12 @@ interface TreeNodeProps {
   moveGroup: (sourcePath: string, targetPath: string) => void;
   managedGroupPaths?: Set<string>;
   onUnmanageGroup?: (groupPath: string) => void;
+
   isMultiSelectMode?: boolean;
   selectedHostIds?: Set<string>;
   toggleHostSelection?: (hostId: string) => void;
+  getDropTargetClasses?: (target: string) => string;
+  setDragOverDropTarget?: (target: string | null) => void;
 }
 
 
@@ -81,9 +87,12 @@ const TreeNode: React.FC<TreeNodeProps> = ({
   moveGroup,
   managedGroupPaths,
   onUnmanageGroup,
+
   isMultiSelectMode,
   selectedHostIds,
   toggleHostSelection,
+  getDropTargetClasses,
+  setDragOverDropTarget,
 }) => {
   const { t } = useI18n();
   const isExpanded = expandedPaths.has(node.path);
@@ -137,6 +146,7 @@ const TreeNode: React.FC<TreeNodeProps> = ({
               <div
                 className={cn(
                   "flex items-center py-2 pr-3 text-sm font-medium cursor-pointer transition-colors select-none group hover:bg-secondary/60 rounded-lg",
+                  getDropTargetClasses?.(node.path),
                 )}
                 style={{ paddingLeft }}
                 draggable
@@ -144,10 +154,19 @@ const TreeNode: React.FC<TreeNodeProps> = ({
                 onDragOver={(e) => {
                   e.preventDefault();
                   e.stopPropagation();
+                  setDragOverDropTarget?.(node.path);
+                }}
+                onDragLeave={(e) => {
+                  const nextTarget = e.relatedTarget;
+                  if (nextTarget instanceof Node && e.currentTarget.contains(nextTarget)) {
+                    return;
+                  }
+                  setDragOverDropTarget?.(null);
                 }}
                 onDrop={(e) => {
                   e.preventDefault();
                   e.stopPropagation();
+                  setDragOverDropTarget?.(null);
                   const hostId = e.dataTransfer.getData("host-id");
                   const groupPath = e.dataTransfer.getData("group-path");
                   if (hostId) moveHostToGroup(hostId, node.path);
@@ -176,6 +195,15 @@ const TreeNode: React.FC<TreeNodeProps> = ({
                     {hostsCountInNode}
                   </span>
                 )}
+                <button
+                  className="h-7 w-7 flex items-center justify-center rounded-md hover:bg-secondary/80 transition-colors opacity-0 group-hover:opacity-100 shrink-0"
+                  onClick={(e) => {
+                    e.stopPropagation();
+                    onEditGroup(node.path);
+                  }}
+                >
+                  <Edit2 size={13} />
+                </button>
               </div>
             </CollapsibleTrigger>
           </ContextMenuTrigger>
@@ -226,9 +254,12 @@ const TreeNode: React.FC<TreeNodeProps> = ({
               moveGroup={moveGroup}
               managedGroupPaths={managedGroupPaths}
               onUnmanageGroup={onUnmanageGroup}
+
               isMultiSelectMode={isMultiSelectMode}
               selectedHostIds={selectedHostIds}
               toggleHostSelection={toggleHostSelection}
+              getDropTargetClasses={getDropTargetClasses}
+              setDragOverDropTarget={setDragOverDropTarget}
             />
           ))}
 
@@ -244,6 +275,7 @@ const TreeNode: React.FC<TreeNodeProps> = ({
               onDeleteHost={onDeleteHost}
               onCopyCredentials={onCopyCredentials}
               moveHostToGroup={moveHostToGroup}
+
               isMultiSelectMode={isMultiSelectMode}
               selectedHostIds={selectedHostIds}
               toggleHostSelection={toggleHostSelection}
@@ -264,6 +296,7 @@ interface HostTreeItemProps {
   onDeleteHost: (host: Host) => void;
   onCopyCredentials: (host: Host) => void;
   moveHostToGroup: (hostId: string, groupPath: string | null) => void;
+
   isMultiSelectMode?: boolean;
   selectedHostIds?: Set<string>;
   toggleHostSelection?: (hostId: string) => void;
@@ -278,6 +311,7 @@ const HostTreeItem: React.FC<HostTreeItemProps> = ({
   onDeleteHost,
   onCopyCredentials,
   moveHostToGroup: _moveHostToGroup,
+
   isMultiSelectMode,
   selectedHostIds,
   toggleHostSelection,
@@ -348,6 +382,15 @@ const HostTreeItem: React.FC<HostTreeItemProps> = ({
                 {tags.length > 2 && '...'}
               </span>
             )}
+            <button
+              className="h-7 w-7 flex items-center justify-center rounded-md hover:bg-secondary/80 transition-colors"
+              onClick={(e) => {
+                e.stopPropagation();
+                onEditHost(host);
+              }}
+            >
+              <Edit2 size={13} />
+            </button>
           </div>
         </div>
       </ContextMenuTrigger>
@@ -364,7 +407,7 @@ const HostTreeItem: React.FC<HostTreeItemProps> = ({
         <ContextMenuItem onClick={() => onCopyCredentials(host)}>
           <Server className="mr-2 h-4 w-4" /> {t("vault.hosts.copyCredentials")}
         </ContextMenuItem>
-        <ContextMenuItem 
+        <ContextMenuItem
           onClick={() => onDeleteHost(host)}
           className="text-destructive focus:text-destructive"
         >
@@ -396,12 +439,15 @@ export const HostTreeView: React.FC<HostTreeViewProps> = ({
   moveGroup,
   managedGroupPaths,
   onUnmanageGroup,
+
   isMultiSelectMode,
   selectedHostIds,
   toggleHostSelection,
+  getDropTargetClasses,
+  setDragOverDropTarget,
 }) => {
   const { t } = useI18n();
-  
+
   // Use external state if provided, otherwise use local persistent state
   const localTreeState = useTreeExpandedState(STORAGE_KEY_VAULT_HOSTS_TREE_EXPANDED);
   
@@ -522,6 +568,8 @@ export const HostTreeView: React.FC<HostTreeViewProps> = ({
           isMultiSelectMode={isMultiSelectMode}
           selectedHostIds={selectedHostIds}
           toggleHostSelection={toggleHostSelection}
+          getDropTargetClasses={getDropTargetClasses}
+          setDragOverDropTarget={setDragOverDropTarget}
         />
       ))}
 
@@ -552,4 +600,4 @@ export const HostTreeView: React.FC<HostTreeViewProps> = ({
       )}
     </div>
   );
-};
+};

components/KeyboardInteractiveModal.tsx

@@ -4,7 +4,7 @@
  * This modal displays prompts from the SSH server and collects user responses.
  */
 import { Eye, EyeOff, KeyRound, Loader2 } from "lucide-react";
-import React, { useCallback, useEffect, useState } from "react";
+import React, { useCallback, useEffect, useMemo, useState } from "react";
 import { useI18n } from "../application/i18n/I18nProvider";
 import { Button } from "./ui/button";
 import {
@@ -24,6 +24,7 @@ export interface KeyboardInteractivePrompt {
 
 export interface KeyboardInteractiveRequest {
   requestId: string;
+  sessionId?: string;
   name: string;
   instructions: string;
   prompts: KeyboardInteractivePrompt[];
@@ -31,9 +32,18 @@ export interface KeyboardInteractiveRequest {
   savedPassword?: string | null;
 }
 
+const isAPasswordPrompt = (prompt: KeyboardInteractivePrompt) => {
+  if (prompt.echo) return false;
+  const lower = prompt.prompt.toLowerCase();
+  if (!lower.includes("password")) return false;
+  // Exclude OTP / one-time password / verification code prompts
+  if (lower.includes("one-time") || lower.includes("otp") || lower.includes("verification") || lower.includes("token") || lower.includes("code")) return false;
+  return true;
+};
+
 interface KeyboardInteractiveModalProps {
   request: KeyboardInteractiveRequest | null;
-  onSubmit: (requestId: string, responses: string[]) => void;
+  onSubmit: (requestId: string, responses: string[], savePassword?: string) => void;
   onCancel: (requestId: string) => void;
 }
 
@@ -46,15 +56,28 @@ export const KeyboardInteractiveModal: React.FC<KeyboardInteractiveModalProps> =
   const [responses, setResponses] = useState<string[]>([]);
   const [showPasswords, setShowPasswords] = useState<boolean[]>([]);
   const [isSubmitting, setIsSubmitting] = useState(false);
+  const [savePassword, setSavePassword] = useState(false);
+
+  // Index of the first password prompt (if any)
+  const passwordPromptIndex = useMemo(() => {
+    if (!request) return -1;
+    return request.prompts.findIndex(p => isAPasswordPrompt(p));
+  }, [request]);
 
   // Reset state when request changes
   useEffect(() => {
     if (request) {
-      setResponses(request.prompts.map(() => ""));
+      const initial = request.prompts.map(() => "");
+      // Auto-fill saved password into the password prompt
+      if (request.savedPassword && passwordPromptIndex >= 0) {
+        initial[passwordPromptIndex] = request.savedPassword;
+      }
+      setResponses(initial);
       setShowPasswords(request.prompts.map(() => false));
       setIsSubmitting(false);
+      setSavePassword(false);
     }
-  }, [request]);
+  }, [request, passwordPromptIndex]);
 
   const handleResponseChange = useCallback((index: number, value: string) => {
     setResponses((prev) => {
@@ -75,8 +98,11 @@ export const KeyboardInteractiveModal: React.FC<KeyboardInteractiveModalProps> =
   const handleSubmit = useCallback(() => {
     if (!request || isSubmitting) return;
     setIsSubmitting(true);
-    onSubmit(request.requestId, responses);
-  }, [request, responses, onSubmit, isSubmitting]);
+    const passwordToSave = savePassword && passwordPromptIndex >= 0
+      ? responses[passwordPromptIndex]
+      : undefined;
+    onSubmit(request.requestId, responses, passwordToSave);
+  }, [request, responses, onSubmit, isSubmitting, savePassword, passwordPromptIndex]);
 
   const handleCancel = useCallback(() => {
     if (!request) return;
@@ -154,19 +180,20 @@ export const KeyboardInteractiveModal: React.FC<KeyboardInteractiveModalProps> =
                     </button>
                   )}
                 </div>
-                {/* Use saved password button - shown below input, right-aligned */}
-                {isPassword && request.savedPassword && !responses[index] && (
-                  <div className="flex justify-end">
-                    <button
-                      type="button"
-                      className="flex items-center gap-1 text-xs text-primary hover:text-primary/80 disabled:opacity-50"
-                      onClick={() => handleResponseChange(index, request.savedPassword!)}
+                {/* Save password checkbox - shown only for the first password prompt */}
+                {index === passwordPromptIndex && (
+                  <label className="flex items-center gap-2 cursor-pointer select-none">
+                    <input
+                      type="checkbox"
+                      checked={savePassword}
+                      onChange={(e) => setSavePassword(e.target.checked)}
                       disabled={isSubmitting}
-                    >
-                      <KeyRound size={12} />
-                      <span>{t("keyboard.interactive.useSavedPassword")}</span>
-                    </button>
-                  </div>
+                      className="accent-primary"
+                    />
+                    <span className="text-xs text-muted-foreground">
+                      {t("keyboard.interactive.savePassword")}
+                    </span>
+                  </label>
                 )}
               </div>
             );

components/KeychainManager.tsx

@@ -515,12 +515,12 @@ echo $3 >> "$FILE"`);
       {/* Main Content */}
       <div
         className={cn(
-          "flex-1 overflow-y-auto transition-all duration-200",
+          "flex-1 flex flex-col min-h-0 transition-all duration-200",
           panel.type !== "closed" && "mr-[380px]",
         )}
       >
         {/* Toolbar */}
-        <div className="flex flex-wrap items-center gap-3 bg-secondary/60 border-b border-border/70 px-3 py-1.5">
+        <div className="flex flex-wrap items-center gap-3 bg-secondary/60 border-b border-border/70 px-3 py-1.5 shrink-0">
           {/* Filter Tabs */}
           <div className="flex items-center gap-1">
             {/* KEY button with split interaction: left=switch view, right=dropdown */}
@@ -684,8 +684,10 @@ echo $3 >> "$FILE"`);
           </div>
         </div>
 
-        {/* Keys Section */}
-        <div className="space-y-3 p-3">
+        {/* Scrollable Content */}
+        <div className="flex-1 overflow-y-auto">
+          {/* Keys Section */}
+          <div className="space-y-3 p-3">
           <div className="flex items-center justify-between">
             <h2 className="text-base font-semibold text-muted-foreground">
               {t("keychain.section.keys")}
@@ -817,6 +819,7 @@ echo $3 >> "$FILE"`);
             </div>
           </div>
         )}
+        </div>
       </div>
 
       {/* Slide-out Panel */}

components/PortForwardingNew.tsx

@@ -14,12 +14,14 @@ import React, { useCallback, useState } from "react";
 import { useI18n } from "../application/i18n/I18nProvider";
 import { usePortForwardingState } from "../application/state/usePortForwardingState";
 import {
+  GroupConfig,
   Host,
   ManagedSource,
   PortForwardingRule,
   PortForwardingType,
   SSHKey,
 } from "../domain/models";
+import { resolveGroupDefaults, applyGroupDefaults } from "../domain/groupConfig";
 import { cn } from "../lib/utils";
 import SelectHostPanel from "./SelectHostPanel";
 import {
@@ -66,6 +68,7 @@ interface PortForwardingProps {
   identities?: import('../domain/models').Identity[];
   customGroups: string[];
   managedSources?: ManagedSource[];
+  groupConfigs?: GroupConfig[];
   onNewHost?: () => void;
   onSaveHost?: (host: Host) => void;
   onCreateGroup?: (groupPath: string) => void;
@@ -77,6 +80,7 @@ const PortForwarding: React.FC<PortForwardingProps> = ({
   identities = [],
   customGroups: _customGroups,
   managedSources = [],
+  groupConfigs = [],
   onNewHost: _onNewHost,
   onSaveHost,
   onCreateGroup: _onCreateGroup,
@@ -113,8 +117,8 @@ const PortForwarding: React.FC<PortForwardingProps> = ({
   // Start a port forwarding tunnel
   const handleStartTunnel = useCallback(
     async (rule: PortForwardingRule) => {
-      const _host = hosts.find((h) => h.id === rule.hostId);
-      if (!_host) {
+      const _rawHost = hosts.find((h) => h.id === rule.hostId);
+      if (!_rawHost) {
         setRuleStatus(rule.id, "error", t("pf.error.hostNotFound"));
         toast.error(
           t("pf.error.hostNotFound"),
@@ -123,6 +127,10 @@ const PortForwarding: React.FC<PortForwardingProps> = ({
         return;
       }
 
+      const _host = _rawHost.group
+        ? applyGroupDefaults(_rawHost, resolveGroupDefaults(_rawHost.group, groupConfigs))
+        : _rawHost;
+
       setPendingOperations((prev) => new Set([...prev, rule.id]));
       let errorShown = false;
 
@@ -130,7 +138,9 @@ 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 +169,7 @@ const PortForwarding: React.FC<PortForwardingProps> = ({
         });
       }
     },
-    [hosts, keys, setRuleStatus, startTunnel, t],
+    [hosts, identities, keys, groupConfigs, setRuleStatus, startTunnel, t],
   );
 
   // Stop a port forwarding tunnel

components/QuickAddSnippetDialog.tsx

@@ -0,0 +1,185 @@
+/**
+ * QuickAddSnippetDialog — lightweight "new snippet" modal mounted at the
+ * App root and triggered by the `netcatty:snippets:add` window event.
+ *
+ * Intentionally minimal: label + command + package only. Advanced fields
+ * (target hosts, shortkey, tags) can be set later via the full Snippets
+ * manager. This keeps the user in their terminal context instead of
+ * navigating to the Vault view just to add a command.
+ */
+
+import { Package } from 'lucide-react';
+import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import { useI18n } from '../application/i18n/I18nProvider';
+import type { Snippet } from '../domain/models';
+import { Button } from './ui/button';
+import { Combobox } from './ui/combobox';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from './ui/dialog';
+import { Input } from './ui/input';
+import { Label } from './ui/label';
+import { Textarea } from './ui/textarea';
+
+export interface QuickAddSnippetDialogProps {
+  snippets: Snippet[];
+  packages: string[];
+  onCreateSnippet: (snippet: Snippet) => void;
+  onCreatePackage?: (packagePath: string) => void;
+}
+
+export const QuickAddSnippetDialog: React.FC<QuickAddSnippetDialogProps> = ({
+  snippets,
+  packages,
+  onCreateSnippet,
+  onCreatePackage,
+}) => {
+  const { t } = useI18n();
+  const [open, setOpen] = useState(false);
+  const [label, setLabel] = useState('');
+  const [command, setCommand] = useState('');
+  const [packagePath, setPackagePath] = useState('');
+  const labelInputRef = useRef<HTMLInputElement>(null);
+
+  // Listen for the global "add snippet" request dispatched by the
+  // terminal-side ScriptsSidePanel + button. We reset form state on
+  // every open so stale input from a previous cancel does not leak.
+  useEffect(() => {
+    const handler = () => {
+      setLabel('');
+      setCommand('');
+      setPackagePath('');
+      setOpen(true);
+    };
+    window.addEventListener('netcatty:snippets:add', handler);
+    return () => window.removeEventListener('netcatty:snippets:add', handler);
+  }, []);
+
+  // Auto-focus the label input once the dialog renders, so the user can
+  // start typing immediately after clicking the + button.
+  useEffect(() => {
+    if (!open) return;
+    const id = window.setTimeout(() => labelInputRef.current?.focus(), 50);
+    return () => window.clearTimeout(id);
+  }, [open]);
+
+  // Derive combobox options from the union of existing packages (from
+  // props) and any package path referenced by an existing snippet, so
+  // the user can reuse anything they see in the main snippets view.
+  const packageOptions = useMemo(() => {
+    const set = new Set<string>();
+    for (const p of packages) {
+      if (p) set.add(p);
+    }
+    for (const s of snippets) {
+      if (s.package) set.add(s.package);
+    }
+    return Array.from(set).sort().map((value) => ({ value, label: value }));
+  }, [packages, snippets]);
+
+  const canSave = label.trim().length > 0 && command.trim().length > 0;
+
+  const handleSave = useCallback(() => {
+    if (!canSave) return;
+    const trimmedPackage = packagePath.trim();
+    // If the user typed a brand new package name, surface it to the parent
+    // so it can be added to the user's package list alongside the snippet.
+    if (trimmedPackage && !packages.includes(trimmedPackage)) {
+      onCreatePackage?.(trimmedPackage);
+    }
+    onCreateSnippet({
+      id: crypto.randomUUID(),
+      label: label.trim(),
+      command, // preserve whitespace in multi-line commands
+      tags: [],
+      package: trimmedPackage || '',
+      targets: [],
+    });
+    setOpen(false);
+  }, [canSave, packagePath, packages, onCreatePackage, onCreateSnippet, label, command]);
+
+  const handleKeyDown = useCallback(
+    (e: React.KeyboardEvent) => {
+      // Cmd/Ctrl+Enter from anywhere in the dialog saves the snippet.
+      if ((e.metaKey || e.ctrlKey) && e.key === 'Enter' && canSave) {
+        e.preventDefault();
+        handleSave();
+      }
+    },
+    [canSave, handleSave],
+  );
+
+  return (
+    <Dialog open={open} onOpenChange={setOpen}>
+      <DialogContent className="max-w-md" onKeyDown={handleKeyDown}>
+        <DialogHeader>
+          <DialogTitle>{t('snippets.panel.newTitle')}</DialogTitle>
+          <DialogDescription>
+            {t('snippets.empty.desc')}
+          </DialogDescription>
+        </DialogHeader>
+
+        <div className="space-y-3">
+          <div className="space-y-1.5">
+            <Label htmlFor="quick-add-snippet-label" className="text-xs">
+              {t('snippets.field.description')}
+            </Label>
+            <Input
+              id="quick-add-snippet-label"
+              ref={labelInputRef}
+              value={label}
+              onChange={(e) => setLabel(e.target.value)}
+              placeholder={t('snippets.field.descriptionPlaceholder')}
+              className="h-9"
+            />
+          </div>
+
+          <div className="space-y-1.5">
+            <Label htmlFor="quick-add-snippet-command" className="text-xs">
+              {t('snippets.field.scriptRequired')}
+            </Label>
+            <Textarea
+              id="quick-add-snippet-command"
+              value={command}
+              onChange={(e) => setCommand(e.target.value)}
+              placeholder="echo hello"
+              className="min-h-[120px] font-mono text-xs"
+              spellCheck={false}
+            />
+          </div>
+
+          <div className="space-y-1.5">
+            <Label className="text-xs flex items-center gap-1.5">
+              <Package size={12} /> {t('snippets.field.package')}
+            </Label>
+            <Combobox
+              value={packagePath}
+              onValueChange={setPackagePath}
+              options={packageOptions}
+              placeholder={t('snippets.field.packagePlaceholder')}
+              allowCreate
+              onCreateNew={setPackagePath}
+              createText={t('snippets.field.createPackage')}
+            />
+          </div>
+        </div>
+
+        <DialogFooter>
+          <Button variant="outline" onClick={() => setOpen(false)}>
+            {t('common.cancel')}
+          </Button>
+          <Button onClick={handleSave} disabled={!canSave}>
+            {t('common.save')}
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+};
+
+export default QuickAddSnippetDialog;

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";
@@ -10,9 +10,10 @@ import React, { memo, useCallback, useEffect, useMemo, useRef, useState } from "
 import { useI18n } from "../application/i18n/I18nProvider";
 import { Host, TerminalSession, Workspace } from "../types";
 import { KeyBinding } from "../domain/models";
+import { useDiscoveredShells, getShellIconPath, isMonochromeShellIcon } from "../lib/useDiscoveredShells";
 
 type QuickSwitcherItem = {
-  type: "host" | "tab" | "workspace" | "action";
+  type: "host" | "tab" | "workspace" | "action" | "shell";
   id: string;
   data?: Host | TerminalSession | Workspace;
 };
@@ -66,7 +67,7 @@ interface QuickSwitcherProps {
   onSelect: (host: Host) => void;
   onSelectTab: (tabId: string) => void;
   onClose: () => void;
-  onCreateLocalTerminal?: () => void;
+  onCreateLocalTerminal?: (shell?: { command: string; args?: string[]; name?: string; icon?: string }) => void;
   // onCreateWorkspace removed - feature not currently used
   keyBindings?: KeyBinding[];
 }
@@ -85,6 +86,18 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
   keyBindings,
 }) => {
   const { t } = useI18n();
+  const discoveredShells = useDiscoveredShells();
+
+  const filteredShells = useMemo(() => {
+    const list = !query.trim()
+      ? discoveredShells
+      : discoveredShells.filter(
+          (s) => s.name.toLowerCase().includes(query.toLowerCase()) || s.id.toLowerCase().includes(query.toLowerCase())
+        );
+    // Default shell first
+    return [...list].sort((a, b) => (a.isDefault === b.isDefault ? 0 : a.isDefault ? -1 : 1));
+  }, [discoveredShells, query]);
+
   // Get hotkey display strings
   const getHotkeyLabel = useCallback((actionId: string) => {
     const binding = keyBindings?.find(k => k.id === actionId);
@@ -98,13 +111,17 @@ 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
@@ -151,13 +168,23 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
       workspaces.forEach((w) =>
         items.push({ type: "workspace", id: w.id, data: w }),
       );
-      // Quick connect actions
-      items.push({ type: "action", id: "local-terminal" });
+      // Local shells (or fallback action if discovery not ready)
+      if (filteredShells.length > 0) {
+        filteredShells.forEach((shell) =>
+          items.push({ type: "shell", id: shell.id }),
+        );
+      } else {
+        items.push({ type: "action", id: "local-terminal" });
+      }
     } else {
       // Recent connections only
       results.forEach((host) =>
         items.push({ type: "host", id: host.id, data: host }),
       );
+      // Also include matching shells in search results
+      filteredShells.forEach((shell) =>
+        items.push({ type: "shell", id: shell.id }),
+      );
     }
 
     // Build index map for O(1) lookup
@@ -167,7 +194,7 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
     });
 
     return { flatItems: items, itemIndexMap: indexMap };
-  }, [showCategorized, results, orphanSessions, workspaces]);
+  }, [showCategorized, results, orphanSessions, workspaces, filteredShells]);
 
   // O(1) index lookup
   const getItemIndex = useCallback((type: string, id: string) => {
@@ -206,6 +233,14 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
           onClose();
         }
         break;
+      case "shell": {
+        const shell = discoveredShells.find(s => s.id === item.id);
+        if (shell && onCreateLocalTerminal) {
+          onCreateLocalTerminal({ command: shell.command, args: shell.args, name: shell.name, icon: shell.icon });
+          onClose();
+        }
+        break;
+      }
     }
   };
 
@@ -287,7 +322,7 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
                 const isSelected = idx === selectedIndex;
                 const icon =
                   tabId === "vault" ? (
-                    <Shield size={16} />
+                    <FolderLock size={16} />
                   ) : (
                     <Folder size={16} />
                   );
@@ -365,21 +400,60 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
               })}
             </div>
 
-            {/* Quick connect section */}
-            <div>
-              <div className="px-4 py-1.5">
-                <span className="text-xs font-medium text-muted-foreground">
-                  Quick connect
-                </span>
+            {/* Local Shells section */}
+            {/* Local Shells or fallback Local Terminal */}
+            {filteredShells.length > 0 ? (
+              <div>
+                <div className="px-4 py-1.5">
+                  <span className="text-xs font-medium text-muted-foreground">
+                    {t("qs.localShells")}
+                  </span>
+                </div>
+                {filteredShells.map((shell) => {
+                  const idx = getItemIndex("shell", shell.id);
+                  const isSelected = idx === selectedIndex;
+                  return (
+                    <div
+                      key={shell.id}
+                      className={`flex items-center gap-3 px-4 py-2.5 cursor-pointer transition-colors ${
+                        isSelected ? "bg-primary/15" : "hover:bg-muted/50"
+                      }`}
+                      onClick={() => {
+                        if (onCreateLocalTerminal) {
+                          onCreateLocalTerminal({ command: shell.command, args: shell.args, name: shell.name, icon: shell.icon });
+                          onClose();
+                        }
+                      }}
+                      onMouseEnter={() => setSelectedIndex(idx)}
+                    >
+                      <img
+                        src={getShellIconPath(shell.icon)}
+                        alt={shell.name}
+                        className={`h-6 w-6 shrink-0${isMonochromeShellIcon(shell.icon) ? " dark:invert" : ""}`}
+                      />
+                      <span className="text-sm font-medium">{shell.name}</span>
+                      {shell.isDefault && (
+                        <span className="text-[10px] text-muted-foreground bg-muted px-1.5 py-0.5 rounded">
+                          {t("qs.default")}
+                        </span>
+                      )}
+                    </div>
+                  );
+                })}
               </div>
-
-              {/* Local Terminal */}
-              {onCreateLocalTerminal && (
+            ) : onCreateLocalTerminal && (
+              <div>
+                <div className="px-4 py-1.5">
+                  <span className="text-xs font-medium text-muted-foreground">
+                    {t("qs.localShells")}
+                  </span>
+                </div>
                 <div
-                  className={`flex items-center gap-3 px-4 py-2.5 cursor-pointer transition-colors ${getItemIndex("action", "local-terminal") === selectedIndex
-                    ? "bg-primary/15"
-                    : "hover:bg-muted/50"
-                    }`}
+                  className={`flex items-center gap-3 px-4 py-2.5 cursor-pointer transition-colors ${
+                    getItemIndex("action", "local-terminal") === selectedIndex
+                      ? "bg-primary/15"
+                      : "hover:bg-muted/50"
+                  }`}
                   onClick={() => {
                     onCreateLocalTerminal();
                     onClose();
@@ -393,10 +467,8 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
                   </div>
                   <span className="text-sm font-medium">{t("qs.localTerminal")}</span>
                 </div>
-              )}
-
-              {/* Serial removed (not supported) */}
-            </div>
+              </div>
+            )}
           </div>
         </ScrollArea>
       </div>

components/ScriptsSidePanel.tsx

@@ -5,7 +5,7 @@
  * Clicking a snippet executes it in the focused terminal session.
  */
 
-import { ChevronRight, Package, Search, Zap } from 'lucide-react';
+import { ChevronRight, Package, Plus, Search, Zap } from 'lucide-react';
 import React, { memo, useCallback, useMemo, useState } from 'react';
 import { useI18n } from '../application/i18n/I18nProvider';
 import { cn } from '../lib/utils';
@@ -119,15 +119,25 @@ const ScriptsSidePanelInner: React.FC<ScriptsSidePanelProps> = ({
     onSnippetClick(command, noAutoRun);
   }, [onSnippetClick]);
 
+  const handleAddSnippet = useCallback(() => {
+    // Let the App shell listen and navigate to the Snippets section with
+    // the "add" panel pre-opened, so the user does not have to leave the
+    // terminal to jump back and click "New Snippet".
+    window.dispatchEvent(new CustomEvent('netcatty:snippets:add'));
+  }, []);
+
   if (!isVisible) return null;
 
   const hasAnyContent = snippets.length > 0 || packages.length > 0;
 
   return (
-    <div className="h-full flex flex-col bg-background overflow-hidden">
-      {/* Search */}
-      <div className="shrink-0 px-2 py-1.5 border-b border-border/50">
-        <div className="relative">
+    <div
+      className="h-full flex flex-col bg-background overflow-hidden"
+      data-section="snippets-panel"
+    >
+      {/* Search + Add */}
+      <div className="shrink-0 px-2 py-1.5 border-b border-border/50 flex items-center gap-1.5">
+        <div className="relative flex-1 min-w-0">
           <Search size={12} className="absolute left-2 top-1/2 -translate-y-1/2 text-muted-foreground" />
           <Input
             value={search}
@@ -136,6 +146,15 @@ const ScriptsSidePanelInner: React.FC<ScriptsSidePanelProps> = ({
             className="h-7 pl-7 text-xs bg-muted/30 border-none"
           />
         </div>
+        <button
+          type="button"
+          onClick={handleAddSnippet}
+          title={t('snippets.action.newSnippet')}
+          aria-label={t('snippets.action.newSnippet')}
+          className="shrink-0 h-7 w-7 flex items-center justify-center rounded-md text-muted-foreground hover:text-foreground hover:bg-muted/60 transition-colors"
+        >
+          <Plus size={14} />
+        </button>
       </div>
 
       {/* Breadcrumb */}

components/SelectHostPanel.tsx

@@ -1,11 +1,9 @@
 import {
-  ArrowLeft,
   Check,
   ChevronRight,
   LayoutGrid,
   Plus,
   Search,
-  X,
 } from "lucide-react";
 import React, { useMemo, useState } from "react";
 import { cn } from "../lib/utils";
@@ -14,11 +12,18 @@ import { Host, SSHKey } from "../types";
 import { ManagedSource } from "../domain/models";
 import { DistroAvatar } from "./DistroAvatar";
 import HostDetailsPanel from "./HostDetailsPanel";
+import { AsidePanel, type AsidePanelLayout } from "./ui/aside-panel";
 import { Button } from "./ui/button";
 import { Input } from "./ui/input";
 import { ScrollArea } from "./ui/scroll-area";
 import { SortDropdown, SortMode } from "./ui/sort-dropdown";
 import { TagFilterDropdown } from "./ui/tag-filter-dropdown";
+import {
+  Tooltip,
+  TooltipContent,
+  TooltipProvider,
+  TooltipTrigger,
+} from "./ui/tooltip";
 
 interface SelectHostPanelProps {
   hosts: Host[];
@@ -38,6 +43,7 @@ interface SelectHostPanelProps {
   title?: string;
   subtitle?: string;
   className?: string;
+  layout?: AsidePanelLayout;
 }
 
 const SelectHostPanel: React.FC<SelectHostPanelProps> = ({
@@ -57,6 +63,7 @@ const SelectHostPanel: React.FC<SelectHostPanelProps> = ({
   title,
   subtitle,
   className,
+  layout = "overlay",
 }) => {
   const { t } = useI18n();
   const panelTitle = title ?? t("selectHost.title");
@@ -198,35 +205,21 @@ const SelectHostPanel: React.FC<SelectHostPanelProps> = ({
   }, [currentPath]);
 
   return (
-    <div
+    <TooltipProvider delayDuration={300}>
+    <AsidePanel
+      open={true}
+      onClose={onBack}
+      title={panelTitle}
+      subtitle={subtitle}
+      showBackButton={true}
+      onBack={onBack}
       className={cn(
-        "absolute right-0 top-0 bottom-0 w-[380px] border-l border-border/60 bg-background z-40 flex flex-col app-no-drag",
+        layout === "overlay" && "z-40",
+        showNewHostPanel && "overflow-visible",
         className,
       )}
+      layout={layout}
     >
-      {/* Header */}
-      <div className="px-4 py-3 border-b border-border/60 flex items-center justify-between gap-3 shrink-0">
-        <div className="flex items-center gap-3 min-w-0">
-          <button
-            onClick={onBack}
-            className="p-1 hover:bg-muted rounded-md transition-colors cursor-pointer shrink-0"
-          >
-            <ArrowLeft size={18} />
-          </button>
-          <div className="min-w-0">
-            <h3 className="text-sm font-semibold">{panelTitle}</h3>
-            {subtitle && (
-              <p className="text-xs text-muted-foreground">{subtitle}</p>
-            )}
-          </div>
-        </div>
-        <button
-          onClick={onBack}
-          className="p-1.5 hover:bg-muted rounded-md transition-colors cursor-pointer shrink-0"
-        >
-          <X size={18} />
-        </button>
-      </div>
 
       {/* Toolbar */}
       <div className="px-4 py-3 flex items-center gap-2 border-b border-border/60 shrink-0">
@@ -270,8 +263,8 @@ const SelectHostPanel: React.FC<SelectHostPanelProps> = ({
       </div>
 
       {/* Content */}
-      <ScrollArea className="flex-1">
-        <div className="p-4 space-y-4">
+      <ScrollArea className="flex-1 min-w-0">
+        <div className="p-3 space-y-3">
           {/* Breadcrumbs */}
           {currentPath && (
             <div className="flex items-center gap-1 text-xs text-muted-foreground">
@@ -301,20 +294,20 @@ const SelectHostPanel: React.FC<SelectHostPanelProps> = ({
           )}
           {groupsWithCounts.length > 0 && (
             <div>
-              <h4 className="text-sm font-semibold mb-3">{t("vault.groups.title")}</h4>
+              <h4 className="text-xs font-semibold mb-2 text-muted-foreground">{t("vault.groups.title")}</h4>
               <div className="space-y-1">
                 {groupsWithCounts.map((group) => (
                   <div
                     key={group.path}
-                    className="flex items-center gap-3 px-3 py-2.5 rounded-lg hover:bg-muted/70 cursor-pointer transition-colors"
+                    className="flex items-center gap-2.5 px-2.5 py-2 rounded-lg hover:bg-muted/70 cursor-pointer transition-colors"
                     onClick={() => setCurrentPath(group.path)}
                   >
-                    <div className="h-10 w-10 rounded-lg bg-primary/15 text-primary flex items-center justify-center">
-                      <LayoutGrid size={18} />
+                    <div className="h-8 w-8 rounded-lg bg-primary/15 text-primary flex items-center justify-center shrink-0">
+                      <LayoutGrid size={15} />
                     </div>
                     <div className="flex-1 min-w-0">
-                      <div className="font-medium">{group.name}</div>
-                      <div className="text-xs text-muted-foreground">
+                      <div className="text-[13px] font-medium truncate">{group.name}</div>
+                      <div className="text-[11px] text-muted-foreground">
                         {t("vault.groups.hostsCount", { count: group.count })}
                       </div>
                     </div>
@@ -327,18 +320,19 @@ const SelectHostPanel: React.FC<SelectHostPanelProps> = ({
           {/* Hosts Section */}
           {filteredHosts.length > 0 && (
             <div>
-              <h4 className="text-sm font-semibold mb-3">{t("vault.nav.hosts")}</h4>
+              <h4 className="text-xs font-semibold mb-2 text-muted-foreground">{t("vault.nav.hosts")}</h4>
               <div className="space-y-1">
                 {filteredHosts.map((host) => {
                   const isSelected = selectedHostIds.includes(host.id);
+                  const connectionStr = `${host.username}@${host.hostname}:${host.port || 22}`;
 
                   return (
                     <div
                       key={host.id}
                       className={cn(
-                        "flex items-center gap-3 px-3 py-2.5 rounded-lg cursor-pointer transition-colors",
+                        "flex items-center gap-2.5 px-2.5 py-2 rounded-lg cursor-pointer transition-colors",
                         isSelected
-                          ? "bg-muted border border-border"
+                          ? "bg-muted"
                           : "hover:bg-muted/70",
                       )}
                       onClick={() => onSelect(host)}
@@ -346,16 +340,32 @@ const SelectHostPanel: React.FC<SelectHostPanelProps> = ({
                       <DistroAvatar
                         host={host}
                         fallback={host.os[0].toUpperCase()}
-                        className="h-10 w-10"
+                        className="h-8 w-8 rounded-md"
                       />
                       <div className="flex-1 min-w-0">
-                        <div className="font-medium">{host.label}</div>
-                        <div className="text-xs text-muted-foreground truncate">
-                          {host.username}@{host.hostname}:{host.port || 22}
-                        </div>
+                        <Tooltip>
+                          <TooltipTrigger asChild>
+                            <div className="text-[13px] font-medium truncate">
+                              {host.label}
+                            </div>
+                          </TooltipTrigger>
+                          <TooltipContent side="top" align="start">
+                            <p>{host.label}</p>
+                          </TooltipContent>
+                        </Tooltip>
+                        <Tooltip>
+                          <TooltipTrigger asChild>
+                            <div className="text-[11px] text-muted-foreground truncate">
+                              {connectionStr}
+                            </div>
+                          </TooltipTrigger>
+                          <TooltipContent side="top" align="start">
+                            <p>{connectionStr}</p>
+                          </TooltipContent>
+                        </Tooltip>
                       </div>
                       {isSelected && (
-                        <Check size={16} className="text-primary" />
+                        <Check size={14} className="text-primary shrink-0" />
                       )}
                     </div>
                   );
@@ -374,7 +384,7 @@ const SelectHostPanel: React.FC<SelectHostPanelProps> = ({
       </ScrollArea>
 
       {/* Footer */}
-      <div className="px-4 py-3 border-t border-border/60">
+      <div className="px-4 py-3 border-t border-border/60 shrink-0">
         <Button
           className="w-full"
           disabled={selectedHostIds.length === 0}
@@ -412,7 +422,8 @@ const SelectHostPanel: React.FC<SelectHostPanelProps> = ({
           onCreateGroup={onCreateGroup}
         />
       )}
-    </div>
+    </AsidePanel>
+    </TooltipProvider>
   );
 };
 

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

@@ -17,6 +17,7 @@ import {
   AsidePanel,
   AsidePanelContent,
   AsidePanelFooter,
+  type AsidePanelLayout,
 } from './ui/aside-panel';
 
 interface SerialPort {
@@ -35,6 +36,7 @@ interface SerialHostDetailsPanelProps {
   groups?: string[];
   onSave: (host: Host) => void;
   onCancel: () => void;
+  layout?: AsidePanelLayout;
 }
 
 const BAUD_RATES = [300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600];
@@ -49,6 +51,7 @@ export const SerialHostDetailsPanel: React.FC<SerialHostDetailsPanelProps> = ({
   groups = [],
   onSave,
   onCancel,
+  layout = 'overlay',
 }) => {
   const { t } = useI18n();
   const terminalBackend = useTerminalBackend();
@@ -66,6 +69,7 @@ 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 +111,7 @@ export const SerialHostDetailsPanel: React.FC<SerialHostDetailsPanelProps> = ({
       port: baudRate,
       tags,
       group,
+      charset,
       serialConfig: config,
     };
 
@@ -162,6 +167,8 @@ export const SerialHostDetailsPanel: React.FC<SerialHostDetailsPanelProps> = ({
       title={t('serial.edit.title')}
       subtitle={initialData.label}
       className="z-40"
+      layout={layout}
+      dataSection="serial-host-details-panel"
     >
       <AsidePanelContent>
         {/* Label */}
@@ -392,6 +399,20 @@ 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

@@ -5,6 +5,7 @@
 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";
@@ -19,7 +20,6 @@ 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);
 
@@ -45,12 +45,65 @@ class AITabErrorBoundary extends React.Component<
   }
 }
 
-type SettingsState = ReturnType<typeof useSettingsState> & {
-    availableFonts: TerminalFont[];
-};
+type SettingsState = ReturnType<typeof useSettingsState>;
 
 const SettingsSyncTab = React.lazy(() => import("./settings/tabs/SettingsSyncTab"));
 
+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}
+            workspaceFocusStyle={settings.workspaceFocusStyle}
+            setWorkspaceFocusStyle={settings.setWorkspaceFocusStyle}
+        />
+    );
+};
+
+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,
@@ -60,6 +113,7 @@ const SettingsSyncTabWithVault: React.FC<{ onSettingsApplied?: () => void }> = (
         customGroups,
         snippetPackages,
         knownHosts,
+        groupConfigs,
         importDataFromString,
         clearVaultData,
     } = useVaultState();
@@ -79,8 +133,8 @@ const SettingsSyncTabWithVault: React.FC<{ onSettingsApplied?: () => void }> = (
     );
 
     const vault = useMemo(
-        () => ({ hosts, keys, identities, snippets, customGroups, snippetPackages, knownHosts }),
-        [hosts, keys, identities, snippets, customGroups, snippetPackages, knownHosts],
+        () => ({ hosts, keys, identities, snippets, customGroups, snippetPackages, knownHosts, groupConfigs }),
+        [hosts, keys, identities, snippets, customGroups, snippetPackages, knownHosts, groupConfigs],
     );
 
     return (
@@ -98,8 +152,7 @@ const SettingsSyncTabWithVault: React.FC<{ onSettingsApplied?: () => void }> = (
 const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }) => {
     const { t } = useI18n();
     const { notifyRendererReady, closeSettingsWindow } = useWindowControls();
-    const { updateState, checkNow, installUpdate, openReleasePage } = useUpdateCheck({ autoUpdateEnabled: settings.autoUpdateEnabled });
-    const aiState = useAIState();
+    const { updateState, checkNow, installUpdate, openReleasePage, startDownload, isUpdateDemoMode } = useUpdateCheck({ autoUpdateEnabled: settings.autoUpdateEnabled });
     const [activeTab, setActiveTab] = useState("application");
     const [mountedTabs, setMountedTabs] = useState(() => new Set(["application"]));
 
@@ -206,6 +259,8 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                             checkNow={checkNow}
                             openReleasePage={openReleasePage}
                             installUpdate={installUpdate}
+                            startDownload={startDownload}
+                            isUpdateDemoMode={isUpdateDemoMode}
                         />
                     )}
 
@@ -231,17 +286,7 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                     )}
 
                     {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") && (
@@ -261,34 +306,7 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                     )}
 
                     {mountedTabs.has("ai") && (
-                        <AITabErrorBoundary>
-                        <React.Suspense fallback={null}>
-                        <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>
+                        <SettingsAITabContainer />
                     )}
 
                     {mountedTabs.has("sync") && (
@@ -318,6 +336,7 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                             checkNow={checkNow}
                             installUpdate={installUpdate}
                             openReleasePage={openReleasePage}
+                            startDownload={startDownload}
                         />
                     )}
                 </div>

components/SftpSidePanel.tsx

@@ -10,7 +10,8 @@
  * Used in TerminalLayer to provide SFTP alongside terminal sessions.
  */
 
-import React, { memo, useCallback, useEffect, useMemo, useRef } from "react";
+import React, { memo, useCallback, useEffect, useMemo, useRef, useState } 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";
@@ -30,12 +31,17 @@ import { SftpTransferQueue } from "./sftp/SftpTransferQueue";
 import { SftpContextProvider } from "./sftp";
 import { useSftpViewPaneCallbacks } from "./sftp/hooks/useSftpViewPaneCallbacks";
 import { useSftpViewTabs } from "./sftp/hooks/useSftpViewTabs";
+import { useSftpKeyboardShortcuts } from "./sftp/hooks/useSftpKeyboardShortcuts";
+import { sftpFocusStore } from "./sftp/hooks/useSftpFocusedPane";
+import { keepOnlyPaneSelections } from "./sftp/hooks/selectionScope";
+import { KeyBinding, HotkeyScheme } from "../domain/models";
 
 interface SftpSidePanelProps {
   hosts: Host[];
   keys: SSHKey[];
   identities: Identity[];
   updateHosts: (hosts: Host[]) => void;
+  sftpDefaultViewMode: "list" | "tree";
   /** The host to connect to (follows focused terminal) */
   activeHost: Host | null;
   initialLocation?: { hostId: string; path: string } | null;
@@ -54,6 +60,8 @@ interface SftpSidePanelProps {
   sftpAutoSync: boolean;
   sftpShowHiddenFiles: boolean;
   sftpUseCompressedUpload: boolean;
+  hotkeyScheme: HotkeyScheme;
+  keyBindings: KeyBinding[];
   editorWordWrap: boolean;
   setEditorWordWrap: (value: boolean) => void;
   onGetTerminalCwd?: () => Promise<string | null>;
@@ -64,6 +72,7 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
   keys,
   identities,
   updateHosts,
+  sftpDefaultViewMode,
   activeHost,
   initialLocation,
   showWorkspaceHostHeader = false,
@@ -75,6 +84,8 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
   sftpAutoSync,
   sftpShowHiddenFiles,
   sftpUseCompressedUpload,
+  hotkeyScheme,
+  keyBindings,
   editorWordWrap,
   setEditorWordWrap,
   onGetTerminalCwd,
@@ -108,6 +119,7 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
     listSftp,
     mkdirLocal,
     deleteLocalFile,
+    listLocalDir,
   } = useSftpBackend();
 
   const sftpRef = useRef(sftp);
@@ -118,6 +130,17 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
 
   const autoSyncRef = useRef(sftpAutoSync);
   autoSyncRef.current = sftpAutoSync;
+  const panelRootRef = useRef<HTMLDivElement>(null);
+  const dialogActionScopeIdRef = useRef(`sftp-side-panel:${crypto.randomUUID()}`);
+  const [hasPaneFocus, setHasPaneFocus] = useState(false);
+
+  useSftpKeyboardShortcuts({
+    keyBindings,
+    hotkeyScheme,
+    sftpRef,
+    dialogActionScopeId: dialogActionScopeIdRef.current,
+    isActive: isVisible && hasPaneFocus,
+  });
 
   const { getOpenerForFile, setOpenerForExtension } = useSftpFileAssociations();
   const getOpenerForFileRef = useRef(getOpenerForFile);
@@ -129,10 +152,60 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
     sftpRef.current.setShowHiddenFiles("left", paneId, !pane.showHiddenFiles);
   }, []);
 
+  const syncFocusedSelection = useCallback((tabId: string | null) => {
+    if (tabId) {
+      keepOnlyPaneSelections(sftpRef.current, { side: "left", tabId });
+      return;
+    }
+    keepOnlyPaneSelections(sftpRef.current, null);
+  }, []);
+
+  const handlePaneFocus = useCallback(() => {
+    sftpFocusStore.setFocusedSide("left");
+    setHasPaneFocus(true);
+    syncFocusedSelection(sftpRef.current.getActiveTabId("left"));
+  }, [syncFocusedSelection]);
+
   // NOTE: We intentionally do NOT sync to activeTabStore here.
   // activeTabStore is a global singleton shared with SftpView.
   // Writing to it here would corrupt SftpView's left pane visibility.
 
+  useEffect(() => {
+    if (!isVisible) {
+      setHasPaneFocus(false);
+      syncFocusedSelection(null);
+    }
+  }, [isVisible, syncFocusedSelection]);
+
+  useEffect(() => {
+    if (!isVisible) return;
+
+    const handlePointerDown = (event: PointerEvent) => {
+      const target = event.target as Node | null;
+      const elementTarget = target instanceof Element ? target : null;
+      const isPortalInteraction = !!elementTarget?.closest(
+        '#netcatty-context-menu-root, [role="dialog"], [data-radix-popper-content-wrapper]',
+      );
+      if (isPortalInteraction) {
+        return;
+      }
+
+      if (panelRootRef.current?.contains(target)) {
+        sftpFocusStore.setFocusedSide("left");
+        setHasPaneFocus(true);
+        syncFocusedSelection(sftpRef.current.getActiveTabId("left"));
+      } else {
+        setHasPaneFocus(false);
+        syncFocusedSelection(null);
+      }
+    };
+
+    document.addEventListener("pointerdown", handlePointerDown, true);
+    return () => {
+      document.removeEventListener("pointerdown", handlePointerDown, true);
+    };
+  }, [isVisible, syncFocusedSelection]);
+
   const {
     leftCallbacks,
     rightCallbacks,
@@ -167,6 +240,7 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
     selectDirectory,
     startStreamTransfer,
     getSftpIdForConnection: sftp.getSftpIdForConnection,
+    listLocalFiles: listLocalDir,
   });
 
   const {
@@ -431,6 +505,7 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
     // 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 (t.parentTaskId) return false; // Child tasks rendered by SftpTransferQueue
       if (connection.isLocal) {
         return t.sourceConnectionId === connection.id || t.targetConnectionId === connection.id;
       }
@@ -503,9 +578,11 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
       rightCallbacks={rightCallbacks}
     >
       <div
+        ref={panelRootRef}
         className="h-full flex flex-col bg-background overflow-hidden"
         style={isVisible ? undefined : { display: "none" }}
         aria-hidden={!isVisible}
+        onClick={handlePaneFocus}
       >
         {showWorkspaceHostHeader && displayHost && (
           <div className="shrink-0 border-b border-border/50 bg-muted/20 px-3 py-1.5">
@@ -518,7 +595,7 @@ 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}
@@ -545,8 +622,12 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
                 <SftpPaneView
                   side="left"
                   pane={pane}
+                  dialogActionScopeId={dialogActionScopeIdRef.current}
+                  isPaneFocused={isVisible && hasPaneFocus}
+                  sftpDefaultViewMode={sftpDefaultViewMode}
                   showHeader
                   showEmptyHeader
+                  forceActive
                   onToggleShowHiddenFiles={() => handleToggleHiddenFiles(pane.id)}
                   onGoToTerminalCwd={onGetTerminalCwd ? handleGoToTerminalCwd : undefined}
                 />
@@ -557,6 +638,7 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
         <SftpTransferQueue
           sftp={sftp}
           visibleTransfers={visibleTransfers}
+          allTransfers={sftp.transfers}
           canRevealTransferTarget={canRevealTransferTarget}
           onRevealTransferTarget={handleRevealTransferTarget}
         />
@@ -589,6 +671,8 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
           handleSaveTextFile={handleSaveTextFile}
           editorWordWrap={editorWordWrap}
           setEditorWordWrap={setEditorWordWrap}
+          hotkeyScheme={hotkeyScheme}
+          keyBindings={keyBindings}
           showFileOpenerDialog={showFileOpenerDialog}
           setShowFileOpenerDialog={setShowFileOpenerDialog}
           fileOpenerTarget={fileOpenerTarget}
@@ -607,6 +691,7 @@ const sidePanelAreEqual = (prev: SftpSidePanelProps, next: SftpSidePanelProps):
   prev.keys === next.keys &&
   prev.identities === next.identities &&
   prev.updateHosts === next.updateHosts &&
+  prev.sftpDefaultViewMode === next.sftpDefaultViewMode &&
   prev.activeHost === next.activeHost &&
   prev.showWorkspaceHostHeader === next.showWorkspaceHostHeader &&
   prev.isVisible === next.isVisible &&
@@ -617,6 +702,8 @@ const sidePanelAreEqual = (prev: SftpSidePanelProps, next: SftpSidePanelProps):
   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 &&
   prev.onGetTerminalCwd === next.onGetTerminalCwd &&

components/SftpView.tsx

@@ -19,11 +19,13 @@ 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 { resolveGroupDefaults, applyGroupDefaults } from "../domain/groupConfig";
 import { useSftpFileAssociations } from "../application/state/useSftpFileAssociations";
 import { toast } from "./ui/toast";
 
@@ -39,6 +41,8 @@ import { useSftpViewPaneCallbacks } from "./sftp/hooks/useSftpViewPaneCallbacks"
 import { useSftpViewTabs } from "./sftp/hooks/useSftpViewTabs";
 import { useSftpKeyboardShortcuts } from "./sftp/hooks/useSftpKeyboardShortcuts";
 import { sftpFocusStore, SftpFocusedSide, useSftpFocusedSide } from "./sftp/hooks/useSftpFocusedPane";
+import { keepOnlyActivePaneSelections, keepOnlyPaneSelections } from "./sftp/hooks/selectionScope";
+
 
 // Wrapper component that subscribes to activeTabId for CSS visibility
 // This isolates the activeTabId subscription - only this component re-renders on tab switch
@@ -48,22 +52,41 @@ interface SftpViewProps {
   hosts: Host[];
   keys: SSHKey[];
   identities: Identity[];
+  groupConfigs?: import('../domain/models').GroupConfig[];
   updateHosts: (hosts: Host[]) => void;
+  sftpDefaultViewMode: "list" | "tree";
+  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,
+  groupConfigs = [],
+  updateHosts,
+  sftpDefaultViewMode,
+  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);
+  const dialogActionScopeIdRef = useRef("sftp-main-view");
+
+  useInstantThemeSwitch(rootRef);
 
   // File watch event handlers (stable refs to avoid re-creating the useSftpState options)
   const fileWatchHandlers = useMemo(() => ({
@@ -84,7 +107,17 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
     defaultShowHiddenFiles: sftpShowHiddenFiles,
   }), [fileWatchHandlers, sftpUseCompressedUpload, sftpShowHiddenFiles]);
 
-  const sftp = useSftpState(hosts, keys, identities, sftpOptions);
+  // Pre-resolve group defaults so SFTP connections inherit group config
+  const effectiveHosts = useMemo(() =>
+    hosts.map(h => {
+      if (!h.group) return h;
+      const defaults = resolveGroupDefaults(h.group, groupConfigs);
+      return applyGroupDefaults(h, defaults);
+    }),
+    [hosts, groupConfigs],
+  );
+
+  const sftp = useSftpState(effectiveHosts, keys, identities, sftpOptions);
 
   // Get backend helpers for file downloads and local filesystem writes.
   const {
@@ -94,6 +127,7 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
     listSftp,
     mkdirLocal,
     deleteLocalFile,
+    listLocalDir,
   } = useSftpBackend();
 
   // Store sftp in a ref so callbacks can access the latest instance
@@ -114,6 +148,7 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
     keyBindings,
     hotkeyScheme,
     sftpRef,
+    dialogActionScopeId: dialogActionScopeIdRef.current,
     isActive,
   });
 
@@ -121,8 +156,18 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
   const focusedSide = useSftpFocusedSide();
 
   // Handle pane focus when clicking on a pane container
-  const handlePaneFocus = useCallback((side: SftpFocusedSide) => {
+  // Clear the opposite side's selection so file operations only affect the focused pane
+  const handlePaneFocus = useCallback((side: SftpFocusedSide, targetTabId?: string) => {
+    const prevSide = sftpFocusStore.getFocusedSide();
     sftpFocusStore.setFocusedSide(side);
+    if (prevSide !== side) {
+      if (targetTabId) {
+        keepOnlyPaneSelections(sftpRef.current, { side, tabId: targetTabId });
+      } else {
+        // Focus side changed — clear other panes but keep the newly focused pane intact.
+        keepOnlyActivePaneSelections(sftpRef.current, side);
+      }
+    }
   }, []);
 
   const handleToggleHiddenFiles = useCallback((side: "left" | "right", paneId: string) => {
@@ -190,10 +235,11 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
     selectDirectory,
     startStreamTransfer,
     getSftpIdForConnection: sftp.getSftpIdForConnection,
+    listLocalFiles: listLocalDir,
   });
 
   const visibleTransfers = useMemo(
-    () => [...sftp.transfers].reverse().slice(0, 5),
+    () => [...sftp.transfers].filter((t) => !t.parentTaskId).reverse().slice(0, 5),
     [sftp.transfers],
   );
 
@@ -236,6 +282,26 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
     handleHostSelectRight,
   } = useSftpViewTabs({ sftp, sftpRef });
 
+  const handleAddTabLeftWithFocus = useCallback(() => {
+    const tabId = handleAddTabLeft();
+    handlePaneFocus("left", tabId);
+  }, [handleAddTabLeft, handlePaneFocus]);
+
+  const handleAddTabRightWithFocus = useCallback(() => {
+    const tabId = handleAddTabRight();
+    handlePaneFocus("right", tabId);
+  }, [handleAddTabRight, handlePaneFocus]);
+
+  const handleSelectTabLeftWithFocus = useCallback((tabId: string) => {
+    handleSelectTabLeft(tabId);
+    handlePaneFocus("left", tabId);
+  }, [handlePaneFocus, handleSelectTabLeft]);
+
+  const handleSelectTabRightWithFocus = useCallback((tabId: string) => {
+    handleSelectTabRight(tabId);
+    handlePaneFocus("right", tabId);
+  }, [handlePaneFocus, handleSelectTabRight]);
+
   return (
     <SftpContextProvider
       hosts={hosts}
@@ -246,6 +312,7 @@ 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" : "",
@@ -275,9 +342,9 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
               <SftpTabBar
                 tabs={leftTabsInfo}
                 side="left"
-                onSelectTab={handleSelectTabLeft}
+                onSelectTab={handleSelectTabLeftWithFocus}
                 onCloseTab={handleCloseTabLeft}
-                onAddTab={handleAddTabLeft}
+                onAddTab={handleAddTabLeftWithFocus}
                 onReorderTabs={handleReorderTabsLeft}
                 onMoveTabToOtherSide={handleMoveTabFromRightToLeft}
               />
@@ -293,6 +360,9 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
                   <SftpPaneView
                     side="left"
                     pane={pane}
+                    dialogActionScopeId={dialogActionScopeIdRef.current}
+                    isPaneFocused={focusedSide === "left"}
+                    sftpDefaultViewMode={sftpDefaultViewMode}
                     showHeader
                     showEmptyHeader={false}
                     onToggleShowHiddenFiles={() => handleToggleHiddenFiles("left", pane.id)}
@@ -332,9 +402,9 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
               <SftpTabBar
                 tabs={rightTabsInfo}
                 side="right"
-                onSelectTab={handleSelectTabRight}
+                onSelectTab={handleSelectTabRightWithFocus}
                 onCloseTab={handleCloseTabRight}
-                onAddTab={handleAddTabRight}
+                onAddTab={handleAddTabRightWithFocus}
                 onReorderTabs={handleReorderTabsRight}
                 onMoveTabToOtherSide={handleMoveTabFromLeftToRight}
               />
@@ -350,6 +420,9 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
                   <SftpPaneView
                     side="right"
                     pane={pane}
+                    dialogActionScopeId={dialogActionScopeIdRef.current}
+                    isPaneFocused={focusedSide === "right"}
+                    sftpDefaultViewMode={sftpDefaultViewMode}
                     showHeader
                     showEmptyHeader={false}
                     onToggleShowHiddenFiles={() => handleToggleHiddenFiles("right", pane.id)}
@@ -394,6 +467,8 @@ const SftpViewInner: React.FC<SftpViewProps> = ({ hosts, keys, identities, updat
           handleSaveTextFile={handleSaveTextFile}
           editorWordWrap={editorWordWrap}
           setEditorWordWrap={setEditorWordWrap}
+          hotkeyScheme={hotkeyScheme}
+          keyBindings={keyBindings}
           showFileOpenerDialog={showFileOpenerDialog}
           setShowFileOpenerDialog={setShowFileOpenerDialog}
           fileOpenerTarget={fileOpenerTarget}
@@ -408,7 +483,19 @@ 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.groupConfigs === next.groupConfigs &&
+  prev.sftpDefaultViewMode === next.sftpDefaultViewMode &&
+  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

@@ -8,7 +8,7 @@ import { Host, ShellHistoryEntry, Snippet, SSHKey } from '../types';
 import { HotkeyScheme, KeyBinding, keyEventToString, ManagedSource, matchesKeyBinding, parseKeyCombo } from '../domain/models';
 import { DistroAvatar } from './DistroAvatar';
 import SelectHostPanel from './SelectHostPanel';
-import { AsidePanel, AsidePanelContent } from './ui/aside-panel';
+import { AsidePanel, AsidePanelContent, AsidePanelFooter } from './ui/aside-panel';
 import { Button } from './ui/button';
 import { Card } from './ui/card';
 import { Combobox, ComboboxOption } from './ui/combobox';
@@ -18,6 +18,7 @@ import { Input } from './ui/input';
 import { Label } from './ui/label';
 import { SortDropdown, SortMode } from './ui/sort-dropdown';
 import { Textarea } from './ui/textarea';
+import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from './ui/tooltip';
 
 interface SnippetsManagerProps {
   snippets: Snippet[];
@@ -720,6 +721,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
           onSaveHost={onSaveHost}
           onCreateGroup={onCreateGroup}
           title={t('snippets.targets.add')}
+          layout="inline"
         />
       );
     }
@@ -730,6 +732,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
           open={true}
           onClose={handleClosePanel}
           title={editingSnippet.id ? t('snippets.panel.editTitle') : t('snippets.panel.newTitle')}
+          layout="inline"
           actions={
             <Button
               variant="ghost"
@@ -883,7 +886,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
           </AsidePanelContent>
 
           {/* Footer */}
-          <div className="px-4 py-3 border-t border-border/60 shrink-0">
+          <AsidePanelFooter>
             <Button
               className="w-full"
               onClick={handleSubmit}
@@ -891,7 +894,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
             >
               {editingSnippet.targets?.length ? t('action.run') : t('common.save')}
             </Button>
-          </div>
+          </AsidePanelFooter>
         </AsidePanel>
       );
     }
@@ -905,6 +908,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
           subtitle={t('snippets.history.subtitle', { count: shellHistory.length })}
           showBackButton={true}
           onBack={handleClosePanel}
+          layout="inline"
         >
           {/* History List */}
           <div
@@ -951,8 +955,9 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
   };
 
   return (
-    <div className="h-full flex gap-3 relative">
-      <div className="flex-1 flex flex-col min-h-0">
+    <TooltipProvider delayDuration={300}>
+    <div className="h-full min-h-0 flex relative">
+      <div className="flex-1 flex flex-col min-h-0 min-w-0 overflow-hidden">
         <header className="border-b border-border/50 bg-secondary/80 backdrop-blur">
           <div className="h-14 px-4 py-2 flex items-center gap-2">
             {/* Search box */}
@@ -1059,7 +1064,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
                     <ContextMenuTrigger>
                       <div
                         className={cn(
-                          "group cursor-pointer",
+                          "group cursor-pointer overflow-hidden",
                           viewMode === 'grid'
                             ? "soft-card elevate rounded-xl h-[68px] px-3 py-2"
                             : "h-14 px-3 py-2 hover:bg-secondary/60 rounded-lg transition-colors"
@@ -1079,11 +1084,11 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
                         }}
                         onClick={() => setSelectedPackage(pkg.path)}
                       >
-                        <div className="flex items-center gap-3 h-full">
+                        <div className="flex items-center gap-3 h-full min-w-0">
                           <div className="h-11 w-11 rounded-xl bg-primary/15 text-primary flex items-center justify-center flex-shrink-0">
                             <Package size={18} />
                           </div>
-                          <div className="min-w-0 flex-1">
+                          <div className="w-0 flex-1">
                             <div className="text-sm font-semibold truncate">{pkg.name}</div>
                             <div className="text-[11px] text-muted-foreground">{t('snippets.package.count', { count: pkg.count })}</div>
                           </div>
@@ -1114,7 +1119,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
                     <ContextMenuTrigger>
                       <div
                         className={cn(
-                          "group cursor-pointer",
+                          "group cursor-pointer overflow-hidden",
                           viewMode === 'grid'
                             ? "soft-card elevate rounded-xl h-[68px] px-3 py-2"
                             : "h-14 px-3 py-2 hover:bg-secondary/60 rounded-lg transition-colors"
@@ -1126,15 +1131,22 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
                         }}
                         onClick={() => handleEdit(snippet)}
                       >
-                        <div className="flex items-center gap-3 h-full">
+                        <div className="flex items-center gap-3 h-full min-w-0">
                           <div className="h-11 w-11 rounded-xl bg-primary/15 text-primary flex items-center justify-center flex-shrink-0">
                             <FileCode size={18} />
                           </div>
-                          <div className="min-w-0 flex-1">
+                          <div className="w-0 flex-1">
                             <div className="text-sm font-semibold truncate">{snippet.label}</div>
-                            <div className="text-[11px] text-muted-foreground font-mono leading-4 truncate">
-                              {snippet.command.replace(/\s+/g, ' ') || t('snippets.commandFallback')}
-                            </div>
+                            <Tooltip>
+                              <TooltipTrigger asChild>
+                                <div className="text-[11px] text-muted-foreground font-mono leading-4 truncate">
+                                  {snippet.command.replace(/\s+/g, ' ') || t('snippets.commandFallback')}
+                                </div>
+                              </TooltipTrigger>
+                              <TooltipContent side="bottom" className="max-w-sm break-all font-mono text-xs">
+                                {snippet.command}
+                              </TooltipContent>
+                            </Tooltip>
                           </div>
                           {snippet.shortkey && (
                             <div className="shrink-0 px-2 py-1 text-[10px] font-mono rounded border border-border bg-muted/50 text-muted-foreground">
@@ -1254,6 +1266,7 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
       {/* Right Panel */}
       {renderRightPanel()}
     </div>
+    </TooltipProvider>
   );
 };
 

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, useCallback, 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,
@@ -26,8 +26,6 @@ import {
   shouldScrollOnTerminalInput,
 } from "../domain/terminalScroll";
 import {
-  resolveHostTerminalFontFamilyId,
-  resolveHostTerminalFontSize,
   resolveHostTerminalThemeId,
 } from "../domain/terminalAppearance";
 import { resolveHostAuth } from "../domain/sshAuth";
@@ -46,14 +44,17 @@ import { TerminalToolbar } from "./terminal/TerminalToolbar";
 import { TerminalComposeBar } from "./terminal/TerminalComposeBar";
 import { TerminalContextMenu } from "./terminal/TerminalContextMenu";
 import { TerminalSearchBar } from "./terminal/TerminalSearchBar";
+import { ZmodemProgressIndicator } from "./terminal/ZmodemProgressIndicator";
+import { useZmodemTransfer } from "./terminal/hooks/useZmodemTransfer";
 import { createTerminalSessionStarters, type PendingAuth } from "./terminal/runtime/createTerminalSessionStarters";
-import { createXTermRuntime, type XTermRuntime } from "./terminal/runtime/createXTermRuntime";
+import { createXTermRuntime, primaryFontFamily, type XTermRuntime } from "./terminal/runtime/createXTermRuntime";
 import { XTERM_PERFORMANCE_CONFIG } from "../infrastructure/config/xtermPerformance";
 import { useTerminalSearch } from "./terminal/hooks/useTerminalSearch";
 import { useTerminalContextActions } from "./terminal/hooks/useTerminalContextActions";
 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.
@@ -110,7 +111,8 @@ interface TerminalProps {
   keys: SSHKey[];
   identities: Identity[];
   snippets: Snippet[];
-  allHosts?: Host[];
+  chainHosts?: Host[];
+  themePreviewId?: string;
   knownHosts?: KnownHost[];
   isVisible: boolean;
   inWorkspace?: boolean;
@@ -157,6 +159,10 @@ 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 };
 }
@@ -179,7 +185,8 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   keys,
   identities,
   snippets,
-  allHosts = [],
+  chainHosts = [],
+  themePreviewId,
   knownHosts: _knownHosts = [],
   isVisible,
   inWorkspace,
@@ -216,6 +223,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   onToggleComposeBar,
   isWorkspaceComposeBarOpen,
   onBroadcastInput,
+  onSnippetExecutorChange,
   sessionLog,
 }) => {
   // Timeout for connection - increased to 120s to allow time for keyboard-interactive (2FA) authentication
@@ -228,11 +236,14 @@ 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);
@@ -240,10 +251,12 @@ 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);
   const lastFittedSizeRef = useRef<{ width: number; height: number } | null>(null);
+  const fontWeightFixupDoneRef = useRef(false);
 
   useEffect(() => {
     if (xtermRuntimeRef.current) {
@@ -291,6 +304,11 @@ 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;
 
@@ -312,6 +330,23 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const statusRef = useRef<TerminalSession["status"]>(status);
   statusRef.current = status;
 
+  // Work around xterm.js WebGL renderer bug: glyphs rendered via the constructor
+  // look different from dynamically-set ones. After text appears on screen (status
+  // becomes "connected"), do a fontWeight round-trip to normalize the rendering.
+  useEffect(() => {
+    if (status !== 'connected' || fontWeightFixupDoneRef.current || !termRef.current) return;
+    fontWeightFixupDoneRef.current = true;
+    const timer = setTimeout(() => {
+      if (!termRef.current) return;
+      // Re-read the current weight at fire time to avoid stale closures
+      const w = termRef.current.options.fontWeight;
+      if (w === 'normal' || w === 400) return;
+      termRef.current.options.fontWeight = 'normal';
+      termRef.current.options.fontWeight = w;
+    }, 200);
+    return () => clearTimeout(timer);
+  }, [status]);
+
   const [chainProgress, setChainProgress] = useState<{
     currentHop: number;
     totalHops: number;
@@ -342,19 +377,170 @@ 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,
   });
 
+  const zmodem = useZmodemTransfer(sessionId);
+
+  const zmodemToastedRef = useRef(false);
+  useEffect(() => {
+    if (zmodem.active) {
+      zmodemToastedRef.current = false;
+      return;
+    }
+    if (zmodemToastedRef.current) return;
+    if (zmodem.error) {
+      zmodemToastedRef.current = true;
+      toast.error(zmodem.error, 'ZMODEM');
+    } else if (zmodem.filename) {
+      zmodemToastedRef.current = true;
+      toast.success(
+        `${zmodem.transferType === 'upload' ? 'Uploaded' : 'Downloaded'}: ${zmodem.filename}`,
+        'ZMODEM',
+      );
+    }
+  }, [zmodem.active, zmodem.error, zmodem.filename, zmodem.transferType]);
+
   useEffect(() => {
     if (!error) {
       lastToastedErrorRef.current = null;
@@ -406,27 +592,52 @@ const TerminalComponent: React.FC<TerminalProps> = ({
 
   // 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 hasFontWeightOverride = host.fontWeightOverride === true || (host.fontWeightOverride === undefined && host.fontWeight != null);
+  const effectiveFontSize = useMemo(
+    () => (hasFontSizeOverride && host.fontSize != null ? host.fontSize : fontSize),
+    [fontSize, hasFontSizeOverride, host.fontSize],
+  );
+  const effectiveFontWeight = useMemo(
+    () => (hasFontWeightOverride && host.fontWeight != null ? host.fontWeight : (terminalSettings?.fontWeight ?? 400)),
+    [terminalSettings?.fontWeight, hasFontWeightOverride, host.fontWeight],
+  );
+  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(() => {
-    const themeId = resolveHostTerminalThemeId(host, terminalTheme.id);
+    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, 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?.();
@@ -494,7 +705,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       }
     },
     onSessionExit,
-    onTerminalDataCapture,
+    onTerminalDataCapture: handleTerminalDataCaptureOnce,
     onOsDetected,
     onCommandExecuted,
     sessionLog,
@@ -503,6 +714,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
 
   useEffect(() => {
     let disposed = false;
+    terminalDataCapturedRef.current = false;
     setError(null);
     hasConnectedRef.current = false;
     pendingOutputScrollRef.current = false;
@@ -539,7 +751,13 @@ 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;
@@ -614,11 +832,11 @@ 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);
         }
@@ -626,7 +844,7 @@ 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(() => {
@@ -635,28 +853,6 @@ 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));
@@ -679,7 +875,6 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     }, 200);
 
     return () => {
-      if (stepTimer) clearInterval(stepTimer);
       clearInterval(countdown);
       clearTimeout(timeout);
       clearInterval(prog);
@@ -714,6 +909,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     if (!options?.force) {
       const lastSize = lastFittedSizeRef.current;
       if (lastSize && lastSize.width === width && lastSize.height === height) {
+        autocompleteRepositionRef.current?.();
         return;
       }
     }
@@ -722,6 +918,13 @@ 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);
       }
@@ -737,21 +940,29 @@ 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 = resolveHostTerminalFontSize(host, fontSize);
-      termRef.current.options.fontSize = effectiveFontSize;
-
       termRef.current.options.theme = {
         ...effectiveTheme.colors,
         selectionBackground: effectiveTheme.colors.selection,
+        scrollbarSliderBackground: effectiveTheme.colors.foreground + '33',
+        scrollbarSliderHoverBackground: effectiveTheme.colors.foreground + '66',
+        scrollbarSliderActiveBackground: effectiveTheme.colors.foreground + '80',
       };
+    }
+  }, [effectiveTheme]);
+
+  useEffect(() => {
+    if (termRef.current) {
+      termRef.current.options.fontSize = effectiveFontSize;
+      termRef.current.options.fontFamily = resolvedFontFamily;
 
       if (terminalSettings) {
         termRef.current.options.cursorStyle = terminalSettings.cursorShape;
         termRef.current.options.cursorBlink = terminalSettings.cursorBlink;
         termRef.current.options.scrollback = terminalSettings.scrollback;
-        termRef.current.options.fontWeight = terminalSettings.fontWeight as
+        termRef.current.options.fontWeight = effectiveFontWeight as
           | 100
           | 200
           | 300
@@ -766,10 +977,10 @@ const TerminalComponent: React.FC<TerminalProps> = ({
           if (typeof document === "undefined" || !document.fonts?.check) {
             return terminalSettings.fontWeightBold;
           }
-          const weightSpec = `${terminalSettings.fontWeightBold} ${effectiveFontSize}px ${fontFamily}`;
+          const weightSpec = `${terminalSettings.fontWeightBold} ${effectiveFontSize}px ${primaryFontFamily(fontFamily)}`;
           return document.fonts.check(weightSpec)
             ? terminalSettings.fontWeightBold
-            : terminalSettings.fontWeight;
+            : effectiveFontWeight;
         })();
 
         termRef.current.options.fontWeightBold = resolvedFontWeightBold as
@@ -787,6 +998,10 @@ 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;
@@ -794,27 +1009,13 @@ 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]);
-
-  useEffect(() => {
-    if (termRef.current) {
-      const effectiveFontSize = resolveHostTerminalFontSize(host, fontSize);
-      termRef.current.options.fontSize = effectiveFontSize;
-
-      const hostFontId = resolveHostTerminalFontFamilyId(host, 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, fontFamilyId, fontSize, effectiveTheme, availableFonts]);
+  }, [effectiveFontSize, effectiveFontWeight, resolvedFontFamily, terminalSettings]);
 
   useEffect(() => {
     if (!isVisible) return;
@@ -862,12 +1063,11 @@ const TerminalComponent: React.FC<TerminalProps> = ({
 
         if (terminalSettings && termRef.current) {
           const fontFamily = termRef.current.options?.fontFamily || "";
-          const effectiveFontSize = resolveHostTerminalFontSize(host, fontSize);
           if (typeof document !== "undefined" && document.fonts?.check) {
-            const weightSpec = `${terminalSettings.fontWeightBold} ${effectiveFontSize}px ${fontFamily}`;
+            const weightSpec = `${terminalSettings.fontWeightBold} ${effectiveFontSize}px ${primaryFontFamily(fontFamily)}`;
             const resolvedBold = document.fonts.check(weightSpec)
               ? terminalSettings.fontWeightBold
-              : terminalSettings.fontWeight;
+              : effectiveFontWeight;
             termRef.current.options.fontWeightBold = resolvedBold as
               | 100
               | 200
@@ -898,7 +1098,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     return () => {
       cancelled = true;
     };
-  }, [host, fontFamilyId, fontSize, resizeSession, sessionId, terminalSettings]);
+  }, [effectiveFontSize, effectiveFontWeight, resizeSession, terminalSettings]);
 
   useEffect(() => {
     if (!isVisible || !containerRef.current || !fitAddonRef.current) return;
@@ -935,12 +1135,38 @@ const TerminalComponent: React.FC<TerminalProps> = ({
 
   useEffect(() => {
     if (!isVisible || !fitAddonRef.current) return;
-    const timer = setTimeout(() => {
+    // Fit twice: once after initial layout (100ms) and again after layout settles
+    // (350ms) to handle race conditions during split operations where the container
+    // dimensions may not be final on the first pass.
+    const timer1 = setTimeout(() => {
       safeFit({ requireVisible: true });
     }, 100);
-    return () => clearTimeout(timer);
+    const timer2 = setTimeout(() => {
+      safeFit({ force: true, requireVisible: true });
+    }, 350);
+    return () => { clearTimeout(timer1); clearTimeout(timer2); };
   }, [inWorkspace, isVisible]);
 
+  // When search bar opens/closes, re-fit terminal and maintain scroll position
+  useEffect(() => {
+    const term = termRef.current;
+    if (!term || !fitAddonRef.current) return;
+    const buffer = term.buffer.active;
+    const wasAtBottom = buffer.viewportY >= buffer.baseY;
+    const prevViewportY = buffer.viewportY;
+    const timer = setTimeout(() => {
+      safeFit({ force: true, requireVisible: true });
+      requestAnimationFrame(() => {
+        if (wasAtBottom) {
+          term.scrollToBottom();
+        } else {
+          term.scrollToLine(prevViewportY);
+        }
+      });
+    }, 0);
+    return () => clearTimeout(timer);
+  }, [isSearchOpen]);
+
   useEffect(() => {
     const shouldAutoFocus = isVisible && termRef.current && (!inWorkspace || isFocusMode);
     if (shouldAutoFocus) {
@@ -1036,6 +1262,8 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   }, [sessionId]);
 
   useEffect(() => {
+    if (!isVisible) return;
+
     let resizeTimeout: ReturnType<typeof setTimeout> | null = null;
 
     const handler = () => {
@@ -1053,7 +1281,7 @@ 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;
@@ -1061,11 +1289,43 @@ 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,
@@ -1170,7 +1430,12 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const handleRetry = () => {
     if (!termRef.current) return;
     cleanupSession();
+    // Reset terminal state: disable mouse tracking modes and clear screen so
+    // stale SGR mouse sequences don't leak into the new session as text input.
+    termRef.current.write('\x1b[?1000l\x1b[?1002l\x1b[?1003l\x1b[?1006l');
+    termRef.current.reset();
     auth.resetForRetry();
+    terminalDataCapturedRef.current = false;
     hasRunStartupCommandRef.current = false;
     setIsDisconnectedDialogDismissed(false);
     setStatus("connecting");
@@ -1304,6 +1569,14 @@ 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
@@ -1326,6 +1599,7 @@ 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}
@@ -1354,16 +1628,16 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         )}
         <div className="absolute left-0 right-0 top-0 z-20 pointer-events-none">
           <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]"
+            className="flex items-center gap-1 px-2 py-0.5 backdrop-blur-md pointer-events-auto min-w-0"
             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">
@@ -1375,8 +1649,8 @@ 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}>
@@ -1423,6 +1697,24 @@ 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>
                       )}
@@ -1720,18 +2012,42 @@ 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}
-            className="absolute inset-x-0 bottom-0"
+            className="xterm-container absolute inset-x-0 bottom-0"
             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}
+                onDismiss={autocompleteClosePopup}
+              />,
+              document.body,
+            )
+          }
+
           {needsHostKeyVerification && pendingHostKeyInfo && (
             <div className="absolute inset-0 z-30 bg-background">
               <KnownHostConfirmDialog
@@ -1811,6 +2127,22 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                 }}
               />
             )}
+
+          {/* ZMODEM transfer progress indicator */}
+          {zmodem.active && (
+            <div className="absolute bottom-4 right-4 z-[25] pointer-events-auto">
+              <ZmodemProgressIndicator
+                transferType={zmodem.transferType}
+                filename={zmodem.filename}
+                transferred={zmodem.transferred}
+                total={zmodem.total}
+                fileIndex={zmodem.fileIndex}
+                fileCount={zmodem.fileCount}
+                finalizing={zmodem.finalizing}
+                onCancel={zmodem.cancel}
+              />
+            </div>
+          )}
         </div>
 
         {/* Compose Bar (solo sessions only; workspace uses TerminalLayer's global bar) */}

components/TextEditorModal.tsx

@@ -20,6 +20,7 @@ loader.config({ paths: { vs: monacoBasePath } });
 
 import { useI18n } from '../application/i18n/I18nProvider';
 import { useClipboardBackend } from '../application/state/useClipboardBackend';
+import { HotkeyScheme, KeyBinding, matchesKeyBinding } from '../domain/models';
 import { getLanguageId, getLanguageName, getSupportedLanguages } from '../lib/sftpFileUtils';
 import { Button } from './ui/button';
 import { Dialog, DialogContent, DialogHeader, DialogTitle } from './ui/dialog';
@@ -34,6 +35,8 @@ interface TextEditorModalProps {
   onSave: (content: string) => Promise<void>;
   editorWordWrap: boolean;
   onToggleWordWrap: () => void;
+  hotkeyScheme: HotkeyScheme;
+  keyBindings: KeyBinding[];
 }
 
 // Map our language IDs to Monaco language IDs
@@ -122,12 +125,38 @@ const hslToHex = (hslString: string): string => {
   return `#${toHex(r)}${toHex(g)}${toHex(b)}`;
 };
 
-// Get background color from CSS variable
-const getBackgroundColor = (): string => {
-  const bgValue = getComputedStyle(document.documentElement)
-    .getPropertyValue('--background')
+// Read a CSS custom-property and convert from HSL to hex
+const getCssColor = (varName: string, fallback: string): string => {
+  const value = getComputedStyle(document.documentElement)
+    .getPropertyValue(varName)
     .trim();
-  return bgValue ? hslToHex(bgValue) : '#1e1e1e';
+  return value ? hslToHex(value) : fallback;
+};
+
+interface EditorColors {
+  bg: string;
+  fg: string;
+  primary: string;
+  card: string;
+  mutedFg: string;
+  border: string;
+}
+
+/** Read all UI CSS variables that matter for the Monaco theme. */
+const getEditorColors = (isDark: boolean): EditorColors => ({
+  bg: getCssColor('--background', isDark ? '#1e1e1e' : '#ffffff'),
+  fg: getCssColor('--foreground', isDark ? '#d4d4d4' : '#1e1e1e'),
+  primary: getCssColor('--primary', isDark ? '#569cd6' : '#0078d4'),
+  card: getCssColor('--card', isDark ? '#252526' : '#f3f3f3'),
+  mutedFg: getCssColor('--muted-foreground', isDark ? '#858585' : '#858585'),
+  border: getCssColor('--border', isDark ? '#3c3c3c' : '#d4d4d4'),
+});
+
+/** Build a fingerprint string so we can detect immersive-mode color changes cheaply. */
+const getThemeSignal = (): string => {
+  const root = document.documentElement;
+  return root.dataset.immersiveTheme
+    ?? getComputedStyle(root).getPropertyValue('--background').trim();
 };
 
 export const TextEditorModal: React.FC<TextEditorModalProps> = ({
@@ -138,6 +167,8 @@ export const TextEditorModal: React.FC<TextEditorModalProps> = ({
   onSave,
   editorWordWrap,
   onToggleWordWrap,
+  hotkeyScheme,
+  keyBindings,
 }) => {
   const { t } = useI18n();
   const { readClipboardText: readClipboardTextFromBridge } = useClipboardBackend();
@@ -151,55 +182,71 @@ 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(() =>
     document.documentElement.classList.contains('dark')
   );
 
-  // Track background color for custom theme
-  const [bgColor, setBgColor] = useState(() => getBackgroundColor());
+  // Track a signal that changes whenever immersive-mode or base theme colors change
+  const [themeSignal, setThemeSignal] = useState(() => getThemeSignal());
 
   // Custom theme name
   const customThemeName = isDarkTheme ? 'netcatty-dark' : 'netcatty-light';
 
-  // Define and update custom Monaco themes based on UI background color
+  // Define and update custom Monaco themes — syncs with immersive-mode / base UI colors
   useEffect(() => {
     if (!monaco) return;
 
-    // Define dark theme with custom background
+    const colors = getEditorColors(isDarkTheme);
+
+    const themeColors: Record<string, string> = {
+      'editor.background': colors.bg,
+      'editor.foreground': colors.fg,
+      'editorCursor.foreground': colors.primary,
+      'editor.selectionBackground': colors.primary + '40',
+      'editor.inactiveSelectionBackground': colors.primary + '25',
+      'editorLineNumber.foreground': colors.mutedFg,
+      'editorLineNumber.activeForeground': colors.fg,
+      'editor.lineHighlightBackground': colors.fg + '08',
+      'editorWidget.background': colors.card,
+      'editorWidget.foreground': colors.fg,
+      'editorWidget.border': colors.border,
+      'input.background': colors.card,
+      'input.foreground': colors.fg,
+      'input.border': colors.border,
+    };
+
     monaco.editor.defineTheme('netcatty-dark', {
       base: 'vs-dark',
       inherit: true,
       rules: [],
-      colors: {
-        'editor.background': bgColor,
-      },
+      colors: themeColors,
     });
 
-    // Define light theme with custom background
     monaco.editor.defineTheme('netcatty-light', {
       base: 'vs',
       inherit: true,
       rules: [],
-      colors: {
-        'editor.background': bgColor,
-      },
+      colors: themeColors,
     });
 
-    // Apply the current theme
     monaco.editor.setTheme(customThemeName);
-  }, [monaco, isDarkTheme, bgColor, customThemeName]);
+  }, [monaco, isDarkTheme, themeSignal, customThemeName]);
 
-  // Listen for theme changes via MutationObserver on <html> class and style
+  // Listen for theme changes via MutationObserver on <html> class, style, and immersive data attr
   useEffect(() => {
     const root = document.documentElement;
     const updateTheme = () => {
       setIsDarkTheme(root.classList.contains('dark'));
-      setBgColor(getBackgroundColor());
+      setThemeSignal(getThemeSignal());
     };
     const observer = new MutationObserver(updateTheme);
-    observer.observe(root, { attributes: true, attributeFilter: ['class', 'style'] });
+    observer.observe(root, {
+      attributes: true,
+      attributeFilter: ['class', 'style', 'data-immersive-theme'],
+    });
     return () => observer.disconnect();
   }, []);
 
@@ -215,6 +262,11 @@ export const TextEditorModal: React.FC<TextEditorModalProps> = ({
     setHasChanges(content !== initialContent);
   }, [content, initialContent]);
 
+  const closeTabBinding = useMemo(
+    () => keyBindings.find((binding) => binding.action === 'closeTab'),
+    [keyBindings],
+  );
+
   const handleSave = useCallback(async () => {
     if (saving) return;
     setSaving(true);
@@ -254,6 +306,10 @@ export const TextEditorModal: React.FC<TextEditorModalProps> = ({
     }
   }, [readClipboardTextFromBridge]);
 
+  useEffect(() => {
+    readClipboardTextRef.current = readClipboardText;
+  }, [readClipboardText]);
+
   const handlePaste = useCallback(async () => {
     const editor = editorRef.current;
     if (!editor) return;
@@ -316,11 +372,59 @@ 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();
     });
+
+    editor.focus();
   }, []);
 
+  useEffect(() => {
+    if (!open) return;
+
+    const frame = window.requestAnimationFrame(() => {
+      editorRef.current?.focus();
+    });
+
+    return () => window.cancelAnimationFrame(frame);
+  }, [open]);
+
+  const handleDialogKeyDownCapture = useCallback((e: React.KeyboardEvent<HTMLDivElement>) => {
+    if (hotkeyScheme === 'disabled' || !closeTabBinding) return;
+
+    const isMac = hotkeyScheme === 'mac';
+    const keyStr = isMac ? closeTabBinding.mac : closeTabBinding.pc;
+    if (!matchesKeyBinding(e.nativeEvent, keyStr, isMac)) return;
+
+    e.preventDefault();
+    e.stopPropagation();
+    e.nativeEvent.stopPropagation();
+    handleClose();
+  }, [closeTabBinding, handleClose, hotkeyScheme]);
+
   // Trigger search dialog
   const handleSearch = useCallback(() => {
     if (editorRef.current) {
@@ -342,7 +446,12 @@ export const TextEditorModal: React.FC<TextEditorModalProps> = ({
 
   return (
     <Dialog open={open} onOpenChange={(isOpen) => !isOpen && handleClose()}>
-      <DialogContent className="max-w-5xl h-[85vh] flex flex-col p-0 gap-0" hideCloseButton>
+      <DialogContent
+        className="max-w-5xl h-[85vh] flex flex-col p-0 gap-0"
+        hideCloseButton
+        data-hotkey-close-tab="true"
+        onKeyDownCapture={handleDialogKeyDownCapture}
+      >
         {/* Header */}
         <DialogHeader className="px-4 py-3 border-b border-border/60 flex-shrink-0">
           <div className="flex items-center justify-between gap-4">

components/ThemeList.tsx

@@ -0,0 +1,124 @@
+/**
+ * Shared theme list component used by both ThemeSelectPanel and ThemeSelectModal
+ */
+import React, { memo, useMemo } from 'react';
+import { Check } from 'lucide-react';
+import { useI18n } from '../application/i18n/I18nProvider';
+import { TERMINAL_THEMES } from '../infrastructure/config/terminalThemes';
+import { useCustomThemes } from '../application/state/customThemeStore';
+import { cn } from '../lib/utils';
+import { TerminalTheme } from '../types';
+
+// Memoized theme item component
+export const ThemeItem = memo(({
+    theme,
+    isSelected,
+    onSelect
+}: {
+    theme: TerminalTheme;
+    isSelected: boolean;
+    onSelect: (id: string) => void;
+}) => (
+    <button
+        onClick={() => onSelect(theme.id)}
+        className={cn(
+            'w-full flex items-center gap-3 px-3 py-2.5 text-left transition-all',
+            isSelected
+                ? 'bg-primary/10'
+                : 'hover:bg-muted'
+        )}
+    >
+        {/* Color swatch preview */}
+        <div
+            className="w-12 h-8 rounded-[4px] flex-shrink-0 flex flex-col justify-center items-start pl-1.5 gap-0.5 border border-border/50"
+            style={{ backgroundColor: theme.colors.background }}
+        >
+            <div className="h-1 w-4 rounded-full" style={{ backgroundColor: theme.colors.green }} />
+            <div className="h-1 w-6 rounded-full" style={{ backgroundColor: theme.colors.blue }} />
+            <div className="h-1 w-3 rounded-full" style={{ backgroundColor: theme.colors.yellow }} />
+        </div>
+        <div className="flex-1 min-w-0">
+            <div className={cn('text-sm font-medium truncate', isSelected ? 'text-primary' : 'text-foreground')}>
+                {theme.name}
+            </div>
+            <div className="text-[10px] text-muted-foreground capitalize">{theme.type}</div>
+        </div>
+        {isSelected && (
+            <Check size={16} className="text-primary flex-shrink-0" />
+        )}
+    </button>
+));
+ThemeItem.displayName = 'ThemeItem';
+
+interface ThemeListProps {
+    selectedThemeId: string;
+    onSelect: (themeId: string) => void;
+}
+
+export const ThemeList: React.FC<ThemeListProps> = ({ selectedThemeId, onSelect }) => {
+    const { t } = useI18n();
+    const customThemes = useCustomThemes();
+
+    const { darkThemes, lightThemes } = useMemo(() => {
+        const dark = TERMINAL_THEMES.filter(t => t.type === 'dark');
+        const light = TERMINAL_THEMES.filter(t => t.type === 'light');
+        return { darkThemes: dark, lightThemes: light };
+    }, []);
+
+    return (
+        <>
+            {/* Dark Themes Section */}
+            <div className="mb-4">
+                <div className="text-[10px] uppercase tracking-wider text-muted-foreground mb-2 font-semibold px-3">
+                    {t('settings.terminal.themeModal.darkThemes')}
+                </div>
+                <div className="space-y-1">
+                    {darkThemes.map(theme => (
+                        <ThemeItem
+                            key={theme.id}
+                            theme={theme}
+                            isSelected={selectedThemeId === theme.id}
+                            onSelect={onSelect}
+                        />
+                    ))}
+                </div>
+            </div>
+
+            {/* Light Themes Section */}
+            <div>
+                <div className="text-[10px] uppercase tracking-wider text-muted-foreground mb-2 font-semibold px-3">
+                    {t('settings.terminal.themeModal.lightThemes')}
+                </div>
+                <div className="space-y-1">
+                    {lightThemes.map(theme => (
+                        <ThemeItem
+                            key={theme.id}
+                            theme={theme}
+                            isSelected={selectedThemeId === theme.id}
+                            onSelect={onSelect}
+                        />
+                    ))}
+                </div>
+            </div>
+
+            {/* Custom Themes Section */}
+            {customThemes.length > 0 && (
+                <div className="mt-4">
+                    <div className="text-[10px] uppercase tracking-wider text-muted-foreground mb-2 font-semibold px-3">
+                        {t('terminal.customTheme.section')}
+                    </div>
+                    <div className="space-y-1">
+                        {customThemes.map(theme => (
+                            <ThemeItem
+                                key={theme.id}
+                                theme={theme}
+                                isSelected={selectedThemeId === theme.id}
+                                onSelect={onSelect}
+                            />
+                        ))}
+                    </div>
+                </div>
+            )}
+        </>
+    );
+};

components/ThemeSelectPanel.tsx

@@ -1,13 +1,11 @@
-import React, { useMemo, useState } from 'react';
-import { TERMINAL_THEMES } from '../infrastructure/config/terminalThemes';
-import { useCustomThemes } from '../application/state/customThemeStore';
-import { cn } from '../lib/utils';
-import { TerminalTheme } from '../types';
+import React from 'react';
 import {
     AsidePanel,
     AsidePanelContent,
+    type AsidePanelLayout,
 } from './ui/aside-panel';
 import { ScrollArea } from './ui/scroll-area';
+import { ThemeList } from './ThemeList';
 
 interface ThemeSelectPanelProps {
     open: boolean;
@@ -16,42 +14,9 @@ interface ThemeSelectPanelProps {
     onClose: () => void;
     onBack?: () => void;
     showBackButton?: boolean;
+    layout?: AsidePanelLayout;
 }
 
-// Mini terminal preview component
-const TerminalPreview: React.FC<{ theme: TerminalTheme; isSelected: boolean }> = ({
-    theme,
-    isSelected
-}) => {
-    return (
-        <div
-            className={cn(
-                "w-16 h-10 rounded-md overflow-hidden border-2 flex-shrink-0",
-                isSelected ? "border-primary" : "border-transparent"
-            )}
-            style={{ backgroundColor: theme.colors.background }}
-        >
-            <div className="p-1 text-[4px] font-mono leading-tight" style={{ color: theme.colors.foreground }}>
-                <div>
-                    <span style={{ color: theme.colors.green }}>$</span>{' '}
-                    <span style={{ color: theme.colors.cyan }}>ls</span>
-                </div>
-                <div className="flex gap-0.5 flex-wrap">
-                    <span style={{ color: theme.colors.blue }}>dir/</span>
-                    <span style={{ color: theme.colors.green }}>file</span>
-                </div>
-                <div>
-                    <span style={{ color: theme.colors.green }}>$</span>{' '}
-                    <span
-                        className="inline-block w-1 h-1.5"
-                        style={{ backgroundColor: theme.colors.cursor }}
-                    />
-                </div>
-            </div>
-        </div>
-    );
-};
-
 const ThemeSelectPanel: React.FC<ThemeSelectPanelProps> = ({
     open,
     selectedThemeId,
@@ -59,52 +24,8 @@ const ThemeSelectPanel: React.FC<ThemeSelectPanelProps> = ({
     onClose,
     onBack,
     showBackButton = true,
+    layout = 'overlay',
 }) => {
-    // Reserved for future hover preview feature
-    const [_hoveredThemeId, setHoveredThemeId] = useState<string | null>(null);
-
-    const customThemes = useCustomThemes();
-
-    // All themes combined
-    const allThemes = useMemo(() => {
-        return [...TERMINAL_THEMES, ...customThemes];
-    }, [customThemes]);
-
-    const renderThemeItem = (theme: TerminalTheme) => {
-        const isSelected = theme.id === selectedThemeId;
-
-        return (
-            <button
-                key={theme.id}
-                className={cn(
-                    "w-full flex items-center gap-3 px-3 py-2.5 rounded-lg transition-colors text-left",
-                    isSelected
-                        ? "bg-primary/10"
-                        : "hover:bg-secondary/50"
-                )}
-                onClick={() => onSelect(theme.id)}
-                onMouseEnter={() => setHoveredThemeId(theme.id)}
-                onMouseLeave={() => setHoveredThemeId(null)}
-            >
-                <TerminalPreview theme={theme} isSelected={isSelected} />
-                <div className="flex-1 min-w-0">
-                    <div className={cn(
-                        "text-sm font-medium truncate",
-                        isSelected && "text-primary"
-                    )}>
-                        {theme.name}
-                    </div>
-                    {theme.id === 'netcatty-dark' && (
-                        <div className="text-xs text-muted-foreground">Default</div>
-                    )}
-                    {theme.id === 'netcatty-light' && (
-                        <div className="text-xs text-muted-foreground">Light mode</div>
-                    )}
-                </div>
-            </button>
-        );
-    };
-
     return (
         <AsidePanel
             open={open}
@@ -112,12 +33,15 @@ const ThemeSelectPanel: React.FC<ThemeSelectPanelProps> = ({
             title="Select Color Theme"
             showBackButton={showBackButton}
             onBack={onBack}
+            layout={layout}
         >
             <AsidePanelContent className="p-0">
                 <ScrollArea className="h-full">
                     <div className="py-2">
-                        {/* All themes in a single list */}
-                        {allThemes.map(renderThemeItem)}
+                        <ThemeList
+                            selectedThemeId={selectedThemeId || ''}
+                            onSelect={onSelect}
+                        />
                     </div>
                 </ScrollArea>
             </AsidePanelContent>

components/TopTabs.tsx

@@ -1,6 +1,8 @@
-import { Bell, Copy, FileText, Folder, LayoutGrid, Minus, Moon, MoreHorizontal, Plus, Server, Shield, Sparkles, 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';
@@ -8,6 +10,7 @@ import { getEffectiveHostDistro } from '../domain/host';
 import { cn } from '../lib/utils';
 import { Host, TerminalSession, Workspace } from '../types';
 import { DISTRO_LOGOS, DISTRO_COLORS } from './DistroAvatar';
+import { getShellIconPath, isMonochromeShellIcon } from '../lib/useDiscoveredShells';
 import { Button } from './ui/button';
 import { ContextMenu, ContextMenuContent, ContextMenuItem, ContextMenuTrigger } from './ui/context-menu';
 import { SyncStatusButton } from './SyncStatusButton';
@@ -36,6 +39,7 @@ 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;
@@ -51,10 +55,10 @@ const localOsId = (() => {
 })();
 
 // Lightweight OS/distro icon for session tabs — matches DistroAvatar "sm" style
-const SessionTabIcon: React.FC<{ host: Host | undefined; isActive: boolean; protocol?: string }> = memo(({ host, isActive, protocol }) => {
+const SessionTabIcon: React.FC<{ host: Host | undefined; isActive: boolean; protocol?: string; shellIcon?: string }> = memo(({ host, isActive, protocol, shellIcon }) => {
   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') {
@@ -65,8 +69,19 @@ const SessionTabIcon: React.FC<{ host: Host | undefined; isActive: boolean; prot
     );
   }
 
-  // Local protocol → OS-specific icon (protocol may be undefined for local sessions)
+  // Local protocol → shell-specific icon if available, else OS-specific icon
   if (protocol === 'local' || host?.protocol === 'local' || (!protocol && !host)) {
+    // Use shell icon from discovery when available
+    const iconId = shellIcon || host?.localShellIcon;
+    if (iconId) {
+      return (
+        <img
+          src={getShellIconPath(iconId)}
+          alt={iconId}
+          className={cn("shrink-0 h-4 w-4 object-contain", isMonochromeShellIcon(iconId) && "dark:invert")}
+        />
+      );
+    }
     const logo = DISTRO_LOGOS[localOsId];
     const bg = DISTRO_COLORS[localOsId] || DISTRO_COLORS.default;
     if (logo) {
@@ -81,7 +96,7 @@ 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>
     );
@@ -108,22 +123,33 @@ 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 +193,16 @@ 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 +245,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
   onToggleTheme,
   onOpenSettings,
   onSyncNow,
+  isImmersiveActive,
   onStartSessionDrag,
   onEndSessionDrag,
   onReorderTabs,
@@ -225,6 +254,7 @@ 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 +358,10 @@ 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 +485,7 @@ 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 +505,56 @@ 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-accent, hsl(var(--accent)))' }}
+                  />
                 )}
                 {/* 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} />
+                  <SessionTabIcon host={hostMap.get(session.hostId)} isActive={activeTabId === session.id} protocol={session.protocol} shellIcon={session.localShellIcon} />
                   <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 +583,7 @@ 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 +604,71 @@ 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-accent, hsl(var(--accent)))' }}
+                  />
                 )}
                 {/* 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 +696,41 @@ 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 +764,14 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
 
   return (
     <div
+      data-top-tabs-root
+      data-section="top-tabs"
       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 +786,62 @@ 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-accent, hsl(var(--accent)))' }}
+              />
+            )}
             <Folder size={14} /> SFTP
           </div>
         </div>
@@ -696,7 +863,7 @@ 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 +880,7 @@ 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 +895,7 @@ 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 +906,7 @@ 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"
           >
@@ -750,21 +919,24 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
           <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)))' }}
             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 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)))' }}>
             <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} />}
@@ -788,10 +960,12 @@ 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

@@ -10,6 +10,7 @@ import { I18nProvider } from "../application/i18n/I18nProvider";
 import { useSettingsState } from "../application/state/useSettingsState";
 import { useTrayPanelBackend } from "../application/state/useTrayPanelBackend";
 import { useActiveTabId } from "../application/state/activeTabStore";
+import { resolveGroupDefaults, applyGroupDefaults } from "../domain/groupConfig";
 import { X, Maximize2, ChevronRight, ChevronDown, Power } from "lucide-react";
 import { AppLogo } from "./AppLogo";
 
@@ -116,7 +117,7 @@ const TrayPanelContent: React.FC = () => {
     onTrayPanelMenuData,
   } = useTrayPanelBackend();
 
-  const { hosts, keys } = useVaultState();
+  const { hosts, keys, identities, groupConfigs } = useVaultState();
   useSessionState();
   const { rules: portForwardingRules, startTunnel, stopTunnel } = usePortForwardingState();
   const activeTabId = useActiveTabId();
@@ -151,11 +152,6 @@ 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]);
@@ -331,15 +327,18 @@ const TrayPanelContent: React.FC = () => {
                     disabled={isConnecting}
                     title={label}
                     onClick={() => {
-                      const host = rule.hostId ? hosts.find((h) => h.id === rule.hostId) : undefined;
-                      if (!host) {
+                      const rawHost = rule.hostId ? hosts.find((h) => h.id === rule.hostId) : undefined;
+                      if (!rawHost) {
                         toast.error(t("pf.error.hostNotFound"));
                         return;
                       }
                       if (isActive) {
                         void stopTunnel(rule.id);
                       } else {
-                        void startTunnel(rule, host, keysForPf, (status, error) => {
+                        const host = rawHost.group
+                          ? applyGroupDefaults(rawHost, resolveGroupDefaults(rawHost.group, groupConfigs))
+                          : rawHost;
+                        void startTunnel(rule, host, hosts, keys, identities, (status, error) => {
                           if (status === "error" && error) toast.error(error);
                         }, rule.autoStart);
                       }

components/ai-elements/conversation.tsx

@@ -1,5 +1,5 @@
 import { cn } from '../../lib/utils';
-import type { ComponentProps, HTMLAttributes, ReactNode } from 'react';
+import type { ComponentProps } from 'react';
 import React, { useCallback } from 'react';
 import { StickToBottom, useStickToBottomContext } from 'use-stick-to-bottom';
 import { ArrowDown } from 'lucide-react';
@@ -25,41 +25,6 @@ export const ConversationContent = ({ className, ...props }: ConversationContent
   />
 );
 
-export interface ConversationEmptyStateProps extends HTMLAttributes<HTMLDivElement> {
-  title?: string;
-  description?: string;
-  icon?: ReactNode;
-}
-
-export const ConversationEmptyState = ({
-  className,
-  title,
-  description,
-  icon,
-  children,
-  ...props
-}: ConversationEmptyStateProps) => (
-  <div
-    className={cn(
-      'flex size-full flex-col items-center justify-center gap-3 p-8 text-center',
-      className,
-    )}
-    {...props}
-  >
-    {children ?? (
-      <>
-        {icon && <div className="text-muted-foreground">{icon}</div>}
-        <div className="space-y-1">
-          <h3 className="font-medium text-sm">{title}</h3>
-          {description && (
-            <p className="text-muted-foreground text-sm">{description}</p>
-          )}
-        </div>
-      </>
-    )}
-  </div>
-);
-
 export const ConversationScrollButton = ({ className, ...props }: React.ButtonHTMLAttributes<HTMLButtonElement>) => {
   const { isAtBottom, scrollToBottom } = useStickToBottomContext();
 

components/ai-elements/message.tsx

@@ -25,8 +25,8 @@ 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 overflow-hidden text-[13px] leading-relaxed',
-      'group-[.is-user]:ml-auto 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',
+      '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,
     )}

components/ai-elements/prompt-input.tsx

@@ -8,8 +8,6 @@
 import { ArrowUp, Square, X } from 'lucide-react';
 import type {
   ComponentProps,
-  ComponentPropsWithoutRef,
-  ElementRef,
   FormEvent,
   HTMLAttributes,
   KeyboardEvent,
@@ -17,13 +15,6 @@ import type {
 } from 'react';
 import { forwardRef, useCallback, useRef } from 'react';
 import { cn } from '../../lib/utils';
-import {
-  Select,
-  SelectContent,
-  SelectItem,
-  SelectTrigger,
-  SelectValue,
-} from '../ui/select';
 import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from '../ui/tooltip';
 import {
   InputGroup,
@@ -254,30 +245,3 @@ export const PromptInputSubmit = forwardRef<HTMLButtonElement, PromptInputSubmit
 );
 PromptInputSubmit.displayName = 'PromptInputSubmit';
 
-// ---------------------------------------------------------------------------
-// PromptInputSelect (thin wrappers around the project's Select component)
-// ---------------------------------------------------------------------------
-
-export const PromptInputSelect = Select;
-
-export const PromptInputSelectTrigger = forwardRef<
-  ElementRef<typeof SelectTrigger>,
-  ComponentPropsWithoutRef<typeof SelectTrigger>
->(({ className, ...props }, ref) => (
-  <SelectTrigger
-    ref={ref}
-    className={cn(
-      'h-7 min-w-0 w-auto gap-1 border-none bg-transparent px-2 text-[11px]',
-      'text-muted-foreground/40 hover:text-muted-foreground/70',
-      'focus:ring-0 focus:ring-offset-0',
-      '[&>svg]:h-3 [&>svg]:w-3 [&>svg]:opacity-40',
-      className,
-    )}
-    {...props}
-  />
-));
-PromptInputSelectTrigger.displayName = 'PromptInputSelectTrigger';
-
-export const PromptInputSelectContent = SelectContent;
-export const PromptInputSelectItem = SelectItem;
-export const PromptInputSelectValue = SelectValue;

components/ai-elements/tool-call.tsx

@@ -5,6 +5,39 @@ 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>;
@@ -75,17 +108,18 @@ export const ToolCall = ({
       : 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="text-yellow-500/70 shrink-0" />
+    <ShieldAlert size={12} className={cn('text-yellow-500/70', statusIconClass)} />
   ) : isLoading ? (
-    <Loader2 size={12} className="animate-spin text-blue-400/70" />
+    <Loader2 size={12} className={cn('animate-spin text-blue-400/70', statusIconClass)} />
   ) : isInterrupted ? (
-    <Slash size={12} className="text-muted-foreground/55" />
+    <Slash size={12} className={cn('text-muted-foreground/55', statusIconClass)} />
   ) : isError ? (
-    <XCircle size={12} className="text-red-400/70" />
+    <XCircle size={12} className={cn('text-red-400/70', statusIconClass)} />
   ) : result !== undefined ? (
-    <CheckCircle2 size={12} className="text-green-400/70" />
+    <CheckCircle2 size={12} className={cn('text-green-400/70', statusIconClass)} />
   ) : null;
 
   return (
@@ -105,7 +139,13 @@ export const ToolCall = ({
           ? <ChevronDown size={12} className="text-muted-foreground/40 shrink-0" />
           : <ChevronRight size={12} className="text-muted-foreground/40 shrink-0" />
         }
-        <span className="font-mono text-muted-foreground/70 truncate">{name}</span>
+        {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' && (
@@ -126,7 +166,7 @@ export const ToolCall = ({
           {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="text-[11px] font-mono text-muted-foreground/50 whitespace-pre-wrap break-all">
+              <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>
@@ -167,10 +207,10 @@ export const ToolCall = ({
             <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(
-                'text-[11px] font-mono whitespace-pre-wrap break-all',
+                'max-h-64 overflow-auto text-[11px] font-mono whitespace-pre [overflow-wrap:normal]',
                 isError ? 'text-red-400/60' : 'text-muted-foreground/50',
               )}>
-                {typeof result === 'string' ? result : JSON.stringify(result, null, 2)}
+                {formatToolResult(result)}
               </pre>
             </div>
           )}

components/ai/AgentIconBadge.tsx

@@ -11,6 +11,7 @@ type AgentLike = {
 
 type AgentIconKey =
   | 'catty'
+  | 'copilot'
   | 'openai'
   | 'claude'
   | 'anthropic'
@@ -20,7 +21,7 @@ type AgentIconKey =
   | 'openrouter'
   | 'zed'
   | 'atom'
-| 'terminal'
+  | 'terminal'
   | 'plus';
 
 type AgentIconVisual = {
@@ -35,6 +36,11 @@ const AGENT_ICON_VISUALS: Record<AgentIconKey, AgentIconVisual> = {
     badgeClassName: 'border-violet-500/20 bg-violet-500/10',
     imageClassName: 'object-contain dark:brightness-0 dark:invert opacity-90',
   },
+  copilot: {
+    src: '/ai/agents/copilot.svg',
+    badgeClassName: 'border-zinc-300 bg-white',
+    imageClassName: 'object-contain brightness-0',
+  },
   openai: {
     src: '/ai/providers/openai.svg',
     badgeClassName: 'border-emerald-500/22 bg-emerald-500/12',
@@ -115,6 +121,9 @@ function getAgentIconKey(agent: AgentLike | 'add-more'): AgentIconKey {
   if (tokens.some((token) => token.includes('claude'))) {
     return 'claude';
   }
+  if (tokens.some((token) => token.includes('copilot'))) {
+    return 'copilot';
+  }
   if (tokens.some((token) => token.includes('anthropic'))) {
     return 'anthropic';
   }
@@ -154,20 +163,14 @@ function getAgentIconKey(agent: AgentLike | 'add-more'): AgentIconKey {
   return 'terminal';
 }
 
-export function getAgentCommandLabel(agent: AgentLike): string | undefined {
-  if (agent.type === 'builtin') {
-    return 'Built-in terminal assistant';
-  }
-  return agent.command ? `CLI: ${agent.command}` : 'External CLI agent';
-}
-
 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 iconKey = getAgentIconKey(agent);
+  const visual = AGENT_ICON_VISUALS[iconKey];
   const badgeSize =
     size === 'xs'
       ? 'h-4 w-4 rounded-sm'
@@ -187,18 +190,27 @@ export const AgentIconBadge: React.FC<{
 
   if (variant === 'plain') {
     return (
-      <img
-        src={visual.src}
-        alt=""
+      <div
         aria-hidden="true"
-        draggable={false}
-        className={cn('shrink-0', imageSize, visual.imageClassName, className)}
+        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,

components/ai/AgentSelector.tsx

@@ -9,6 +9,10 @@ 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 {
+  isSettingsManagedDiscoveredAgent,
+  matchesManagedAgentConfig,
+} from '../../infrastructure/ai/managedAgents';
 import type { AgentInfo, ExternalAgentConfig, DiscoveredAgent } from '../../infrastructure/ai/types';
 import AgentIconBadge from './AgentIconBadge';
 import {
@@ -140,7 +144,12 @@ const AgentSelector: React.FC<AgentSelectorProps> = ({
   const unconfiguredDiscovered = useMemo(
     () =>
       discoveredAgents.filter(
-        (da) => !externalAgents.some((ea) => ea.command === da.command || ea.command === da.path),
+        (da) => {
+          if (isSettingsManagedDiscoveredAgent(da)) {
+            return !externalAgents.some((ea) => matchesManagedAgentConfig(ea, da.command));
+          }
+          return !externalAgents.some((ea) => ea.command === da.command || ea.command === da.path);
+        },
       ),
     [discoveredAgents, externalAgents],
   );
@@ -208,7 +217,7 @@ const AgentSelector: React.FC<AgentSelectorProps> = ({
       <DropdownContent
         align="start"
         sideOffset={6}
-        className="w-[288px] rounded-2xl border border-border/50 bg-popover p-0 text-foreground shadow-lg supports-[backdrop-filter]:backdrop-blur-xl"
+        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

components/ai/ChatInput.tsx

@@ -229,7 +229,7 @@ const ChatInput: React.FC<ChatInputProps> = ({
             value={value}
             onChange={(e) => handleInputChange(e.target.value)}
             placeholder={placeholder || defaultPlaceholder}
-            disabled={disabled || isStreaming}
+            disabled={disabled}
             className={expanded ? 'max-h-[220px]' : undefined}
           />
           <button

components/ai/ChatMessageList.tsx

@@ -144,12 +144,14 @@ const ChatMessageList: React.FC<ChatMessageListProps> = ({ messages, isStreaming
       .flatMap((m) => m.toolResults?.map((tr) => tr.toolCallId) ?? []),
   );
 
-  // Build a map from toolCallId → toolName for display
+  // 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);
       }
     }
   }
@@ -178,6 +180,7 @@ const ChatMessageList: React.FC<ChatMessageListProps> = ({ messages, isStreaming
                   <ToolCall
                     key={tr.toolCallId}
                     name={toolCallNames.get(tr.toolCallId) || tr.toolCallId}
+                    args={toolCallArgs.get(tr.toolCallId)}
                     result={tr.content}
                     isError={tr.isError}
                   />
@@ -235,8 +238,13 @@ const ChatMessageList: React.FC<ChatMessageListProps> = ({ messages, isStreaming
                       </MessageResponse>
                 )}
 
-                {/* Tool calls */}
-                {message.toolCalls?.map((tc) => {
+                {/* Pending tool calls from the *last* assistant message are rendered
+                    after all tool-result messages (see below) for chronological order.
+                    Unresolved tool calls from earlier or cancelled messages are shown
+                    inline — as interrupted, or with approval controls if still pending. */}
+                {(message !== lastAssistantMessage || message.executionStatus === 'cancelled') && message.toolCalls?.filter((tc) =>
+                  !resolvedToolCallIds.has(tc.id),
+                ).map((tc) => {
                   const isPending = pendingApprovals.has(tc.id);
                   const resolved = resolvedApprovals.get(tc.id);
                   const approvalStatus = isPending
@@ -246,14 +254,12 @@ const ChatMessageList: React.FC<ChatMessageListProps> = ({ messages, isStreaming
                       : 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)}
+                      isInterrupted={!isPending}
                       approvalStatus={approvalStatus}
                       onApprove={() => handleApprove(tc.id)}
                       onReject={() => handleReject(tc.id)}
@@ -287,6 +293,33 @@ const ChatMessageList: React.FC<ChatMessageListProps> = ({ messages, isStreaming
           );
         })}
 
+        {/* Pending tool calls from the last assistant message — rendered here
+            (after all tool-result messages) so they appear at the bottom. */}
+        {lastAssistantMessage?.toolCalls?.filter((tc) =>
+          !resolvedToolCallIds.has(tc.id) && lastAssistantMessage.executionStatus !== 'cancelled',
+        ).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={isStreaming && lastAssistantMessage.executionStatus === 'running' && !isPending}
+              approvalStatus={approvalStatus}
+              onApprove={() => handleApprove(tc.id)}
+              onReject={() => handleReject(tc.id)}
+            />
+          );
+        })}
+
         {/* 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))

components/ai/ExecutionPlan.tsx

@@ -1,169 +0,0 @@
-/**
- * ExecutionPlan - Renders a multi-step execution plan for AI agent tasks.
- *
- * Shows a numbered list of steps with status indicators, host badges,
- * optional command previews, and action buttons.
- */
-
-import {
-  CheckCircle2,
-  Circle,
-  Loader2,
-  SkipForward,
-  XCircle,
-} from 'lucide-react';
-import React from 'react';
-import { cn } from '../../lib/utils';
-import { Badge } from '../ui/badge';
-import { Button } from '../ui/button';
-
-// -------------------------------------------------------------------
-// Types
-// -------------------------------------------------------------------
-
-interface ExecutionPlanStep {
-  description: string;
-  host?: string;
-  command?: string;
-  status: 'pending' | 'running' | 'completed' | 'failed' | 'skipped';
-}
-
-interface ExecutionPlanProps {
-  steps: ExecutionPlanStep[];
-  onApprove: () => void;
-  onModify: () => void;
-  onReject: () => void;
-  isExecuting: boolean;
-}
-
-// -------------------------------------------------------------------
-// Status icon mapping
-// -------------------------------------------------------------------
-
-function StepStatusIcon({
-  status,
-}: {
-  status: ExecutionPlanStep['status'];
-}) {
-  switch (status) {
-    case 'pending':
-      return <Circle size={16} className="text-muted-foreground" />;
-    case 'running':
-      return (
-        <Loader2 size={16} className="text-blue-500 animate-spin" />
-      );
-    case 'completed':
-      return <CheckCircle2 size={16} className="text-green-500" />;
-    case 'failed':
-      return <XCircle size={16} className="text-destructive" />;
-    case 'skipped':
-      return (
-        <SkipForward size={16} className="text-muted-foreground/60" />
-      );
-  }
-}
-
-// -------------------------------------------------------------------
-// Component
-// -------------------------------------------------------------------
-
-const ExecutionPlan: React.FC<ExecutionPlanProps> = ({
-  steps,
-  onApprove,
-  onModify,
-  onReject,
-  isExecuting,
-}) => {
-  return (
-    <div className="rounded-lg border border-border bg-muted/30 overflow-hidden">
-      {/* Header */}
-      <div className="px-3 py-2 border-b border-border/60 bg-muted/50">
-        <span className="text-sm font-medium">
-          Execution Plan ({steps.length} step{steps.length !== 1 ? 's' : ''})
-        </span>
-      </div>
-
-      {/* Steps list */}
-      <div className="divide-y divide-border/30">
-        {steps.map((step, index) => (
-          <div
-            key={index}
-            className={cn(
-              'flex items-start gap-3 px-3 py-2.5 transition-colors',
-              step.status === 'running' && 'bg-blue-500/5',
-              step.status === 'completed' && 'bg-green-500/5',
-              step.status === 'failed' && 'bg-destructive/5',
-              step.status === 'skipped' && 'opacity-50',
-            )}
-          >
-            {/* Step number + status icon */}
-            <div className="flex items-center gap-2 shrink-0 pt-0.5">
-              <span className="text-xs text-muted-foreground font-mono w-4 text-right">
-                {index + 1}
-              </span>
-              <StepStatusIcon status={step.status} />
-            </div>
-
-            {/* Step content */}
-            <div className="min-w-0 flex-1 space-y-1">
-              <div className="flex items-center gap-2 flex-wrap">
-                <span
-                  className={cn(
-                    'text-sm',
-                    step.status === 'skipped' && 'line-through',
-                  )}
-                >
-                  {step.description}
-                </span>
-                {step.host && (
-                  <Badge
-                    variant="outline"
-                    className="text-[10px] px-1.5 py-0"
-                  >
-                    {step.host}
-                  </Badge>
-                )}
-              </div>
-              {step.command && (
-                <code className="block text-xs font-mono bg-muted/80 px-2 py-1 rounded text-muted-foreground truncate">
-                  {step.command}
-                </code>
-              )}
-            </div>
-          </div>
-        ))}
-      </div>
-
-      {/* Action buttons */}
-      <div className="px-3 py-2.5 border-t border-border/60 flex items-center justify-end gap-2">
-        {isExecuting ? (
-          <Button
-            variant="destructive"
-            size="sm"
-            onClick={onReject}
-          >
-            Cancel
-          </Button>
-        ) : (
-          <>
-            <Button variant="ghost" size="sm" onClick={onReject}>
-              Cancel
-            </Button>
-            <Button variant="outline" size="sm" onClick={onModify}>
-              Modify Plan
-            </Button>
-            <Button size="sm" onClick={onApprove}>
-              Approve
-            </Button>
-          </>
-        )}
-      </div>
-    </div>
-  );
-};
-
-ExecutionPlan.displayName = 'ExecutionPlan';
-
-export default ExecutionPlan;
-export { ExecutionPlan };
-export type { ExecutionPlanProps, ExecutionPlanStep };

components/ai/PermissionDialog.tsx

@@ -1,200 +0,0 @@
-/**
- * PermissionDialog - Modal for AI agent tool call permission requests.
- *
- * Shown when the agent needs user approval to execute a tool call.
- * Displays tool name, arguments, recommendation, and approve/reject actions.
- */
-
-import { ShieldAlert } from 'lucide-react';
-import React, { useCallback } from 'react';
-import { useI18n } from '../../application/i18n/I18nProvider';
-import { cn } from '../../lib/utils';
-import { Badge } from '../ui/badge';
-import { Button } from '../ui/button';
-import {
-  Dialog,
-  DialogContent,
-  DialogDescription,
-  DialogFooter,
-  DialogHeader,
-  DialogTitle,
-} from '../ui/dialog';
-
-// -------------------------------------------------------------------
-// Types
-// -------------------------------------------------------------------
-
-interface PermissionDialogProps {
-  open: boolean;
-  toolCall: { name: string; arguments: Record<string, unknown> } | null;
-  recommendation: 'allow' | 'confirm' | 'deny';
-  onApprove: () => void;
-  onReject: () => void;
-  onDismiss: () => void;
-}
-
-// -------------------------------------------------------------------
-// Component
-// -------------------------------------------------------------------
-
-const PermissionDialog: React.FC<PermissionDialogProps> = ({
-  open,
-  toolCall,
-  recommendation,
-  onApprove,
-  onReject,
-  onDismiss,
-}) => {
-  const { t } = useI18n();
-  const isDenied = recommendation === 'deny';
-
-  // Keyboard shortcuts: Enter to approve, Escape to reject
-  const handleKeyDown = useCallback(
-    (e: React.KeyboardEvent) => {
-      if (e.key === 'Enter' && !isDenied) {
-        e.preventDefault();
-        onApprove();
-      } else if (e.key === 'Escape') {
-        e.preventDefault();
-        onReject();
-      }
-    },
-    [isDenied, onApprove, onReject],
-  );
-
-  // Format arguments as readable code block content
-  let formattedArgs = '';
-  if (toolCall) {
-    try {
-      formattedArgs = JSON.stringify(toolCall.arguments, null, 2);
-    } catch {
-      formattedArgs = String(toolCall.arguments);
-    }
-  }
-
-  // Extract host/session info from arguments if present
-  const sessionId =
-    toolCall?.arguments?.sessionId as string | undefined;
-  const sessionIds =
-    toolCall?.arguments?.sessionIds as string[] | undefined;
-
-  const recommendationBadge = () => {
-    switch (recommendation) {
-      case 'allow':
-        return (
-          <Badge className="bg-green-600/20 text-green-400 border-green-600/30">
-            {t('ai.chat.recommendAllow')}
-          </Badge>
-        );
-      case 'confirm':
-        return (
-          <Badge className="bg-yellow-600/20 text-yellow-400 border-yellow-600/30">
-            {t('ai.chat.recommendConfirm')}
-          </Badge>
-        );
-      case 'deny':
-        return <Badge variant="destructive">{t('ai.chat.recommendDeny')}</Badge>;
-    }
-  };
-
-  return (
-    <Dialog open={open} onOpenChange={(isOpen) => !isOpen && onDismiss()}>
-      <DialogContent hideCloseButton onKeyDown={handleKeyDown}>
-        <DialogHeader>
-          <DialogTitle className="flex items-center gap-2">
-            <ShieldAlert
-              size={20}
-              className={cn(
-                isDenied ? 'text-destructive' : 'text-yellow-500',
-              )}
-            />
-            {t('ai.chat.permissionRequired')}
-          </DialogTitle>
-          <DialogDescription>
-            {t('ai.chat.permissionDescription')}
-          </DialogDescription>
-        </DialogHeader>
-
-        {toolCall && (
-          <div className="space-y-3">
-            {/* Tool name and recommendation */}
-            <div className="flex items-center justify-between">
-              <div className="flex items-center gap-2">
-                <span className="text-sm text-muted-foreground">{t('ai.chat.toolLabel')}:</span>
-                <code className="text-sm font-mono bg-muted px-1.5 py-0.5 rounded">
-                  {toolCall.name}
-                </code>
-              </div>
-              {recommendationBadge()}
-            </div>
-
-            {/* Target session(s) */}
-            {(sessionId || sessionIds) && (
-              <div className="flex items-center gap-2">
-                <span className="text-sm text-muted-foreground">{t('ai.chat.targetLabel')}:</span>
-                {sessionId && (
-                  <code className="text-xs font-mono bg-muted px-1.5 py-0.5 rounded">
-                    {sessionId}
-                  </code>
-                )}
-                {sessionIds && (
-                  <div className="flex flex-wrap gap-1">
-                    {sessionIds.map((id) => (
-                      <code
-                        key={id}
-                        className="text-xs font-mono bg-muted px-1.5 py-0.5 rounded"
-                      >
-                        {id}
-                      </code>
-                    ))}
-                  </div>
-                )}
-              </div>
-            )}
-
-            {/* Arguments code block */}
-            <div className="rounded-md border border-border bg-muted/50 p-3 max-h-48 overflow-auto">
-              <pre className="text-xs font-mono whitespace-pre-wrap break-all text-foreground">
-                {formattedArgs}
-              </pre>
-            </div>
-
-            {/* Deny warning */}
-            {isDenied && (
-              <div className="rounded-md border border-destructive/30 bg-destructive/10 p-3">
-                <p className="text-sm text-destructive">
-                  {t('ai.chat.commandBlocked')}
-                </p>
-              </div>
-            )}
-          </div>
-        )}
-
-        <DialogFooter>
-          {isDenied ? (
-            <Button variant="destructive" onClick={onReject} className="w-full">
-              {t('ai.chat.reject')}
-            </Button>
-          ) : (
-            <>
-              <Button
-                variant="outline"
-                onClick={onReject}
-                className="border-destructive/30 text-destructive hover:bg-destructive/10"
-              >
-                {t('ai.chat.reject')}
-              </Button>
-              <Button onClick={onApprove}>{t('ai.chat.approve')}</Button>
-            </>
-          )}
-        </DialogFooter>
-      </DialogContent>
-    </Dialog>
-  );
-};
-
-PermissionDialog.displayName = 'PermissionDialog';
-
-export default PermissionDialog;
-export { PermissionDialog };
-export type { PermissionDialogProps };

components/ai/hooks/useAIChatStreaming.ts

@@ -18,6 +18,7 @@ import type {
   ChatMessage,
   ChatMessageAttachment,
   ExternalAgentConfig,
+  ProviderAdvancedParams,
   ProviderConfig,
   WebSearchConfig,
 } from '../../../infrastructure/ai/types';
@@ -111,6 +112,13 @@ export interface PanelBridge extends NetcattyBridge {
   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>;
+  aiAcpListModels?: (
+    acpCommand: string,
+    acpArgs?: string[],
+    cwd?: string,
+    providerId?: string,
+    chatSessionId?: string,
+  ) => Promise<{ ok: boolean; models?: Array<{ id: string; name: string; description?: string }>; currentModelId?: string | null; error?: string }>;
   aiAcpCleanup?: (chatSessionId: string) => Promise<{ ok: boolean }>;
   [key: string]: ((...args: unknown[]) => unknown) | undefined;
 }
@@ -125,6 +133,7 @@ export interface TerminalSessionInfo {
   username?: string;
   protocol?: string;
   shellType?: string;
+  deviceType?: string;
   connected: boolean;
 }
 
@@ -186,6 +195,7 @@ export interface UseAIChatStreamingReturn {
     sdkMessages: Array<ModelMessage>,
     signal: AbortSignal,
     currentAssistantMsgId: string,
+    advancedParams?: ProviderAdvancedParams,
   ) => Promise<void>;
   /** Send a message to the Catty agent (built-in). */
   sendToCattyAgent: (
@@ -320,6 +330,7 @@ export function useAIChatStreaming({
     sdkMessages: Array<ModelMessage>,
     signal: AbortSignal,
     currentAssistantMsgId: string,
+    advancedParams?: ProviderAdvancedParams,
   ): Promise<void> => {
     const result = streamText({
       model,
@@ -328,6 +339,11 @@ export function useAIChatStreaming({
       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
@@ -680,6 +696,7 @@ export function useAIChatStreaming({
         username: s.username,
         protocol: s.protocol,
         shellType: s.shellType,
+        deviceType: s.deviceType,
         connected: s.connected,
       })),
       permissionMode: context.globalPermissionMode,
@@ -804,7 +821,7 @@ export function useAIChatStreaming({
         sdkMessages.push({ role: 'user', content: trimmed });
       }
 
-      await processCattyStream(sessionId, model, systemPrompt, tools, sdkMessages, abortController.signal, assistantMsgId);
+      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);

components/host-details/ChainPanel.tsx

@@ -2,14 +2,15 @@
  * Host Chain Sub-Panel
  * Panel for configuring SSH jump host chain
  */
-import { ArrowDown,Plus,X } from 'lucide-react';
-import React from 'react';
+import { ArrowDown,Plus,Search,X } from 'lucide-react';
+import React, { useMemo, useState } from 'react';
 import { useI18n } from '../../application/i18n/I18nProvider';
 import { Host } from '../../types';
 import { DistroAvatar } from '../DistroAvatar';
-import { AsidePanel } from '../ui/aside-panel';
+import { AsidePanel, type AsidePanelLayout } from '../ui/aside-panel';
 import { Button } from '../ui/button';
 import { Card } from '../ui/card';
+import { Input } from '../ui/input';
 import { ScrollArea } from '../ui/scroll-area';
 
 export interface ChainPanelProps {
@@ -23,6 +24,7 @@ export interface ChainPanelProps {
     onClearChain: () => void;
     onBack: () => void;
     onCancel: () => void;
+    layout?: AsidePanelLayout;
 }
 
 export const ChainPanel: React.FC<ChainPanelProps> = ({
@@ -36,8 +38,17 @@ export const ChainPanel: React.FC<ChainPanelProps> = ({
     onClearChain,
     onBack,
     onCancel,
+    layout = 'overlay',
 }) => {
     const { t } = useI18n();
+    const [searchQuery, setSearchQuery] = useState('');
+    const filteredHosts = useMemo(() => {
+        if (!searchQuery.trim()) return availableHostsForChain;
+        const q = searchQuery.toLowerCase();
+        return availableHostsForChain.filter(
+            (host) => host.label.toLowerCase().includes(q) || host.hostname.toLowerCase().includes(q)
+        );
+    }, [availableHostsForChain, searchQuery]);
     return (
         <AsidePanel
             open={true}
@@ -45,6 +56,7 @@ export const ChainPanel: React.FC<ChainPanelProps> = ({
             title={t('hostDetails.chain.title')}
             showBackButton={true}
             onBack={onBack}
+            layout={layout}
             actions={
                 <Button size="sm" onClick={onBack}>
                     {t('common.save')}
@@ -52,16 +64,7 @@ export const ChainPanel: React.FC<ChainPanelProps> = ({
             }
         >
             <ScrollArea className="flex-1">
-                <div className="p-4 space-y-4">
-                    <Card className="p-3 space-y-3 bg-card border-border/80">
-                        <p className="text-xs text-muted-foreground">
-                            {t('hostDetails.chain.desc', { host: formLabel || formHostname })}
-                        </p>
-                        <Button className="w-full h-10" onClick={() => { }}>
-                            <Plus size={14} className="mr-2" /> {t('hostDetails.chain.addHost')}
-                        </Button>
-                    </Card>
-
+                <div className="p-4 space-y-4 w-0 min-w-full">
                     {/* Chain visualization */}
                     <div className="space-y-2">
                         {chainedHosts.map((host, index) => (
@@ -73,7 +76,7 @@ export const ChainPanel: React.FC<ChainPanelProps> = ({
                                 )}
                                 <div className="flex items-center gap-2 p-2 rounded-lg border border-border/60 bg-card">
                                     <DistroAvatar host={host} fallback={host.label.slice(0, 2).toUpperCase()} className="h-8 w-8" />
-                                    <span className="text-sm font-medium flex-1">{host.label || host.hostname}</span>
+                                    <span className="text-sm font-medium flex-1 min-w-0 truncate">{host.label || host.hostname}</span>
                                     <Button
                                         variant="ghost"
                                         size="icon"
@@ -110,11 +113,20 @@ export const ChainPanel: React.FC<ChainPanelProps> = ({
                     {availableHostsForChain.length > 0 && (
                         <Card className="p-3 bg-card border-border/80">
                             <p className="text-xs font-semibold text-muted-foreground mb-2">{t('hostDetails.chain.availableHosts')}</p>
+                            <div className="relative mb-2">
+                                <Search size={14} className="absolute left-2.5 top-1/2 -translate-y-1/2 text-muted-foreground" />
+                                <Input
+                                    value={searchQuery}
+                                    onChange={(e) => setSearchQuery(e.target.value)}
+                                    placeholder={t('common.searchPlaceholder')}
+                                    className="h-8 pl-8 text-sm"
+                                />
+                            </div>
                             <div className="space-y-1">
-                                {availableHostsForChain.map((host) => (
+                                {filteredHosts.map((host) => (
                                     <button
                                         key={host.id}
-                                        className="w-full flex items-center gap-2 p-2 rounded-md hover:bg-secondary transition-colors text-left"
+                                        className="w-full flex items-center gap-2 p-2 rounded-md hover:bg-secondary transition-colors text-left overflow-hidden"
                                         onClick={() => onAddHost(host.id)}
                                     >
                                         <DistroAvatar host={host} fallback={host.label.slice(0, 2).toUpperCase()} className="h-8 w-8" />

components/host-details/CreateGroupPanel.tsx

@@ -5,7 +5,7 @@
 import { FolderPlus,HelpCircle,Plus } from 'lucide-react';
 import React from 'react';
 import { useI18n } from '../../application/i18n/I18nProvider';
-import { AsidePanel,AsidePanelContent } from '../ui/aside-panel';
+import { AsidePanel,AsidePanelContent,type AsidePanelLayout } from '../ui/aside-panel';
 import { Button } from '../ui/button';
 import { Card } from '../ui/card';
 import { Input } from '../ui/input';
@@ -42,6 +42,7 @@ export interface CreateGroupPanelProps {
     onSave: () => void;
     onBack: () => void;
     onCancel: () => void;
+    layout?: AsidePanelLayout;
 }
 
 export const CreateGroupPanel: React.FC<CreateGroupPanelProps> = ({
@@ -53,6 +54,7 @@ export const CreateGroupPanel: React.FC<CreateGroupPanelProps> = ({
     onSave,
     onBack,
     onCancel,
+    layout = 'overlay',
 }) => {
     const { t } = useI18n();
     return (
@@ -62,6 +64,7 @@ export const CreateGroupPanel: React.FC<CreateGroupPanelProps> = ({
             title={t('hostDetails.group.title')}
             showBackButton={true}
             onBack={onBack}
+            layout={layout}
             actions={
                 <Button size="sm" onClick={onSave} disabled={!newGroupName.trim()}>
                     {t('common.save')}

components/host-details/EnvVarsPanel.tsx

@@ -6,7 +6,7 @@ import { Plus,X } from 'lucide-react';
 import React from 'react';
 import { useI18n } from '../../application/i18n/I18nProvider';
 import { EnvVar } from '../../types';
-import { AsidePanel,AsidePanelContent } from '../ui/aside-panel';
+import { AsidePanel,AsidePanelContent,type AsidePanelLayout } from '../ui/aside-panel';
 import { Button } from '../ui/button';
 import { Card } from '../ui/card';
 import { Input } from '../ui/input';
@@ -25,6 +25,7 @@ export interface EnvVarsPanelProps {
     onSave: () => void;
     onBack: () => void;
     onCancel: () => void;
+    layout?: AsidePanelLayout;
 }
 
 export const EnvVarsPanel: React.FC<EnvVarsPanelProps> = ({
@@ -41,6 +42,7 @@ export const EnvVarsPanel: React.FC<EnvVarsPanelProps> = ({
     onSave,
     onBack,
     onCancel,
+    layout = 'overlay',
 }) => {
     const { t } = useI18n();
     return (
@@ -50,6 +52,7 @@ export const EnvVarsPanel: React.FC<EnvVarsPanelProps> = ({
             title={t('hostDetails.envVars.title')}
             showBackButton={true}
             onBack={onBack}
+            layout={layout}
             actions={
                 <Button size="sm" onClick={onSave}>
                     {t('common.save')}

components/host-details/ProxyPanel.tsx

@@ -7,7 +7,7 @@ import React from 'react';
 import { useI18n } from '../../application/i18n/I18nProvider';
 import { cn } from '../../lib/utils';
 import { ProxyConfig } from '../../types';
-import { AsidePanel,AsidePanelContent } from '../ui/aside-panel';
+import { AsidePanel,AsidePanelContent,type AsidePanelLayout } from '../ui/aside-panel';
 import { Badge } from '../ui/badge';
 import { Button } from '../ui/button';
 import { Card } from '../ui/card';
@@ -19,6 +19,7 @@ export interface ProxyPanelProps {
     onClearProxy: () => void;
     onBack: () => void;
     onCancel: () => void;
+    layout?: AsidePanelLayout;
 }
 
 export const ProxyPanel: React.FC<ProxyPanelProps> = ({
@@ -27,6 +28,7 @@ export const ProxyPanel: React.FC<ProxyPanelProps> = ({
     onClearProxy,
     onBack,
     onCancel,
+    layout = 'overlay',
 }) => {
     const { t } = useI18n();
     return (
@@ -36,6 +38,7 @@ export const ProxyPanel: React.FC<ProxyPanelProps> = ({
             title={t('hostDetails.proxyPanel.title')}
             showBackButton={true}
             onBack={onBack}
+            layout={layout}
             actions={
                 <Button size="sm" onClick={onBack} disabled={!proxyConfig?.host}>
                     {t('common.save')}

components/port-forwarding/WizardContent.tsx

@@ -123,7 +123,7 @@ export const WizardContent: React.FC<WizardContentProps> = ({
                     >
                         {selectedHost ? (
                             <div className="flex items-center gap-2 w-full">
-                                <DistroAvatar host={selectedHost} fallback={selectedHost.os[0].toUpperCase()} className="h-6 w-6" />
+                                <DistroAvatar host={selectedHost} fallback={selectedHost.os[0].toUpperCase()} size="sm" />
                                 <span>{selectedHost.label}</span>
                                 <Check size={14} className="ml-auto" />
                             </div>
@@ -228,7 +228,7 @@ export const WizardContent: React.FC<WizardContentProps> = ({
                     >
                         {selectedHost ? (
                             <div className="flex items-center gap-2 w-full">
-                                <DistroAvatar host={selectedHost} fallback={selectedHost.os[0].toUpperCase()} className="h-6 w-6" />
+                                <DistroAvatar host={selectedHost} fallback={selectedHost.os[0].toUpperCase()} size="sm" />
                                 <span>{selectedHost.label}</span>
                                 <Check size={14} className="ml-auto" />
                             </div>

components/settings/ThemeSelectModal.tsx

@@ -3,55 +3,12 @@
  * A modal dialog for selecting terminal themes in settings
  */
 
-import React, { memo, useCallback, useMemo } from 'react';
+import React, { useCallback } from 'react';
 import { createPortal } from 'react-dom';
-import { Check, Palette, X } from 'lucide-react';
+import { Palette, X } from 'lucide-react';
 import { useI18n } from '../../application/i18n/I18nProvider';
-import { TERMINAL_THEMES, TerminalThemeConfig } from '../../infrastructure/config/terminalThemes';
-import { useCustomThemes } from '../../application/state/customThemeStore';
 import { Button } from '../ui/button';
-import { cn } from '../../lib/utils';
-
-// Memoized theme item component to prevent unnecessary re-renders
-const ThemeItem = memo(({
-    theme,
-    isSelected,
-    onSelect
-}: {
-    theme: TerminalThemeConfig;
-    isSelected: boolean;
-    onSelect: (id: string) => void;
-}) => (
-    <button
-        onClick={() => onSelect(theme.id)}
-        className={cn(
-            'w-full flex items-center gap-3 px-3 py-2.5 rounded-lg text-left transition-all',
-            isSelected
-                ? 'bg-primary/15 ring-1 ring-primary'
-                : 'hover:bg-muted'
-        )}
-    >
-        {/* Color swatch preview */}
-        <div
-            className="w-12 h-8 rounded-md flex-shrink-0 flex flex-col justify-center items-start pl-1.5 gap-0.5 border border-border/50"
-            style={{ backgroundColor: theme.colors.background }}
-        >
-            <div className="h-1 w-4 rounded-full" style={{ backgroundColor: theme.colors.green }} />
-            <div className="h-1 w-6 rounded-full" style={{ backgroundColor: theme.colors.blue }} />
-            <div className="h-1 w-3 rounded-full" style={{ backgroundColor: theme.colors.yellow }} />
-        </div>
-        <div className="flex-1 min-w-0">
-            <div className={cn('text-sm font-medium truncate', isSelected ? 'text-primary' : 'text-foreground')}>
-                {theme.name}
-            </div>
-            <div className="text-[10px] text-muted-foreground capitalize">{theme.type}</div>
-        </div>
-        {isSelected && (
-            <Check size={16} className="text-primary flex-shrink-0" />
-        )}
-    </button>
-));
-ThemeItem.displayName = 'ThemeItem';
+import { ThemeList } from '../ThemeList';
 
 interface ThemeSelectModalProps {
     open: boolean;
@@ -68,15 +25,6 @@ export const ThemeSelectModal: React.FC<ThemeSelectModalProps> = ({
 }) => {
     const { t } = useI18n();
 
-    // Group themes by type
-    const { darkThemes, lightThemes } = useMemo(() => {
-        const dark = TERMINAL_THEMES.filter(t => t.type === 'dark');
-        const light = TERMINAL_THEMES.filter(t => t.type === 'light');
-        return { darkThemes: dark, lightThemes: light };
-    }, []);
-
-    const customThemes = useCustomThemes();
-
     // Handle theme selection - select and close
     const handleThemeSelect = useCallback((themeId: string) => {
         onSelect(themeId);
@@ -134,58 +82,10 @@ export const ThemeSelectModal: React.FC<ThemeSelectModalProps> = ({
 
                 {/* Theme List */}
                 <div className="flex-1 min-h-0 overflow-y-auto p-4">
-                    {/* Dark Themes Section */}
-                    <div className="mb-4">
-                        <div className="text-[10px] uppercase tracking-wider text-muted-foreground mb-2 font-semibold px-1">
-                            {t('settings.terminal.themeModal.darkThemes')}
-                        </div>
-                        <div className="space-y-1">
-                            {darkThemes.map(theme => (
-                                <ThemeItem
-                                    key={theme.id}
-                                    theme={theme}
-                                    isSelected={selectedThemeId === theme.id}
-                                    onSelect={handleThemeSelect}
-                                />
-                            ))}
-                        </div>
-                    </div>
-
-                    {/* Light Themes Section */}
-                    <div>
-                        <div className="text-[10px] uppercase tracking-wider text-muted-foreground mb-2 font-semibold px-1">
-                            {t('settings.terminal.themeModal.lightThemes')}
-                        </div>
-                        <div className="space-y-1">
-                            {lightThemes.map(theme => (
-                                <ThemeItem
-                                    key={theme.id}
-                                    theme={theme}
-                                    isSelected={selectedThemeId === theme.id}
-                                    onSelect={handleThemeSelect}
-                                />
-                            ))}
-                        </div>
-                    </div>
-
-                    {/* Custom Themes Section */}
-                    {customThemes.length > 0 && (
-                        <div className="mt-4">
-                            <div className="text-[10px] uppercase tracking-wider text-muted-foreground mb-2 font-semibold px-1">
-                                {t('terminal.customTheme.section')}
-                            </div>
-                            <div className="space-y-1">
-                                {customThemes.map(theme => (
-                                    <ThemeItem
-                                        key={theme.id}
-                                        theme={theme}
-                                        isSelected={selectedThemeId === theme.id}
-                                        onSelect={handleThemeSelect}
-                                    />
-                                ))}
-                            </div>
-                        </div>
-                    )}
+                    <ThemeList
+                        selectedThemeId={selectedThemeId}
+                        onSelect={handleThemeSelect}
+                    />
                 </div>
 
                 {/* Footer */}

components/settings/tabs/SettingsAITab.tsx

@@ -8,7 +8,7 @@
  *   - SafetySettings
  */
 import { Bot, Globe } from "lucide-react";
-import React, { useCallback, useEffect, useMemo, useState } from "react";
+import React, { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import type {
   AIPermissionMode,
   AIProviderId,
@@ -16,8 +16,12 @@ import type {
   ProviderConfig,
   WebSearchConfig,
 } from "../../../infrastructure/ai/types";
+import {
+  getManagedAgentStoredPath,
+  matchesManagedAgentConfig,
+  type ManagedAgentKey,
+} from "../../../infrastructure/ai/managedAgents";
 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";
@@ -38,6 +42,7 @@ import { ProviderCard } from "./ai/ProviderCard";
 import { AddProviderDropdown } from "./ai/AddProviderDropdown";
 import { CodexConnectionCard } from "./ai/CodexConnectionCard";
 import { ClaudeCodeCard } from "./ai/ClaudeCodeCard";
+import { CopilotCliCard } from "./ai/CopilotCliCard";
 import { SafetySettings } from "./ai/SafetySettings";
 import { WebSearchSettings } from "./ai/WebSearchSettings";
 
@@ -70,6 +75,54 @@ interface SettingsAITabProps {
   setWebSearchConfig: (config: WebSearchConfig | null) => void;
 }
 
+function areExternalAgentListsEqual(
+  left: ExternalAgentConfig[],
+  right: ExternalAgentConfig[],
+): boolean {
+  if (left.length !== right.length) return false;
+  return left.every((agent, index) => JSON.stringify(agent) === JSON.stringify(right[index]));
+}
+
+function buildManagedAgentState(
+  prevAgents: ExternalAgentConfig[],
+  defaultAgentId: string,
+  agentKey: ManagedAgentKey,
+  pathInfo: AgentPathInfo | null,
+): { agents: ExternalAgentConfig[]; defaultAgentId: string } {
+  const managedId = `discovered_${agentKey}`;
+  const managedAgents = prevAgents.filter((agent) => matchesManagedAgentConfig(agent, agentKey));
+  const otherAgents = prevAgents.filter((agent) => !matchesManagedAgentConfig(agent, agentKey));
+  const storedPath = getManagedAgentStoredPath(prevAgents, agentKey);
+
+  if (!pathInfo?.available || !pathInfo.path) {
+    return {
+      agents: storedPath ? prevAgents : otherAgents,
+      defaultAgentId: storedPath
+        ? defaultAgentId
+        : managedAgents.some((agent) => agent.id === defaultAgentId)
+          ? "catty"
+          : defaultAgentId,
+    };
+  }
+
+  const existingManaged = managedAgents.find((agent) => agent.id === managedId);
+  const defaults = AGENT_DEFAULTS[agentKey];
+  const nextManagedAgent: ExternalAgentConfig = {
+    ...existingManaged,
+    ...defaults,
+    id: managedId,
+    command: pathInfo.path,
+    enabled: managedAgents.length === 0 ? true : managedAgents.some((agent) => agent.enabled),
+  };
+
+  return {
+    agents: [...otherAgents, nextManagedAgent],
+    defaultAgentId: managedAgents.some((agent) => agent.id === defaultAgentId)
+      ? managedId
+      : defaultAgentId,
+  };
+}
+
 // ---------------------------------------------------------------------------
 // Main Tab Component
 // ---------------------------------------------------------------------------
@@ -113,58 +166,44 @@ const SettingsAITab: React.FC<SettingsAITabProps> = ({
   const [claudePathInfo, setClaudePathInfo] = useState<AgentPathInfo | null>(null);
   const [claudeCustomPath, setClaudeCustomPath] = useState("");
   const [isResolvingClaude, setIsResolvingClaude] = useState(false);
+  const initialManagedPathsRef = useRef<{
+    codex: string;
+    claude: string;
+    copilot: string;
+  } | null>(null);
+  if (!initialManagedPathsRef.current) {
+    initialManagedPathsRef.current = {
+      codex: getManagedAgentStoredPath(externalAgents, "codex") ?? "",
+      claude: getManagedAgentStoredPath(externalAgents, "claude") ?? "",
+      copilot: getManagedAgentStoredPath(externalAgents, "copilot") ?? "",
+    };
+  }
 
-  const {
-    discoveredAgents,
-    isDiscovering,
-    enableAgent,
-  } = useAgentDiscovery(externalAgents, setExternalAgents);
+  const [copilotPathInfo, setCopilotPathInfo] = useState<AgentPathInfo | null>(null);
+  const [copilotCustomPath, setCopilotCustomPath] = useState("");
+  const [isResolvingCopilot, setIsResolvingCopilot] = useState(false);
 
-  // Derive path info from discovery results
-  useEffect(() => {
-    if (isDiscovering) return;
+  // Ref to read current defaultAgentId without adding it as a dependency.
+  const defaultAgentIdRef = useRef(defaultAgentId);
+  defaultAgentIdRef.current = defaultAgentId;
 
-    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 resolveAgentPath = useCallback(async (
+    agentKey: ManagedAgentKey,
+    customPath = "",
+  ) => {
     const bridge = getBridge();
-    if (!bridge?.aiResolveCli) return;
+    if (!bridge?.aiResolveCli) return null;
 
-    const customPath = agentKey === "codex" ? codexCustomPath : claudeCustomPath;
-    const setInfo = agentKey === "codex" ? setCodexPathInfo : setClaudePathInfo;
-    const setResolving = agentKey === "codex" ? setIsResolvingCodex : setIsResolvingClaude;
+    const setInfo = agentKey === "codex"
+      ? setCodexPathInfo
+      : agentKey === "claude"
+        ? setClaudePathInfo
+        : setCopilotPathInfo;
+    const setResolving = agentKey === "codex"
+      ? setIsResolvingCodex
+      : agentKey === "claude"
+        ? setIsResolvingClaude
+        : setIsResolvingCopilot;
 
     setResolving(true);
     try {
@@ -174,32 +213,48 @@ const SettingsAITab: React.FC<SettingsAITabProps> = ({
       });
       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];
-        });
+      // Consolidate managed agent entries using the callback form of
+      // setExternalAgents so we never depend on externalAgents directly.
+      // All three agents resolve concurrently on mount — React runs
+      // state updater callbacks sequentially, so updating the ref inside
+      // ensures later calls see earlier defaultAgentId changes.
+      let nextDefaultId: string | null = null;
+      setExternalAgents((prev) => {
+        const state = buildManagedAgentState(prev, defaultAgentIdRef.current, agentKey, result);
+        if (state.defaultAgentId !== defaultAgentIdRef.current) {
+          nextDefaultId = state.defaultAgentId;
+          defaultAgentIdRef.current = state.defaultAgentId;
+        }
+        return areExternalAgentListsEqual(prev, state.agents) ? prev : state.agents;
+      });
+      if (nextDefaultId !== null) {
+        setDefaultAgentId(nextDefaultId);
       }
+
+      return result;
     } catch (err) {
       console.error("Path resolution failed:", err);
+      return null;
     } finally {
       setResolving(false);
     }
-  }, [codexCustomPath, claudeCustomPath, setExternalAgents]);
+  }, [setExternalAgents, setDefaultAgentId]);
+
+  useEffect(() => {
+    void resolveAgentPath("codex", initialManagedPathsRef.current?.codex ?? "");
+    void resolveAgentPath("claude", initialManagedPathsRef.current?.claude ?? "");
+    void resolveAgentPath("copilot", initialManagedPathsRef.current?.copilot ?? "");
+  }, [resolveAgentPath]);
+
+  // Validate a custom path for an agent
+  const handleCheckCustomPath = useCallback(async (agentKey: ManagedAgentKey) => {
+    const customPath = agentKey === "codex"
+      ? codexCustomPath
+      : agentKey === "claude"
+        ? claudeCustomPath
+        : copilotCustomPath;
+    await resolveAgentPath(agentKey, customPath);
+  }, [claudeCustomPath, codexCustomPath, copilotCustomPath, resolveAgentPath]);
 
   // Add a new provider from preset
   const handleAddProvider = useCallback(
@@ -457,7 +512,7 @@ const SettingsAITab: React.FC<SettingsAITabProps> = ({
 
             <CodexConnectionCard
               pathInfo={codexPathInfo}
-              isResolvingPath={isDiscovering || isResolvingCodex}
+              isResolvingPath={isResolvingCodex}
               customPath={codexCustomPath}
               onCustomPathChange={setCodexCustomPath}
               onRecheckPath={() => void handleCheckCustomPath("codex")}
@@ -483,13 +538,29 @@ const SettingsAITab: React.FC<SettingsAITabProps> = ({
 
             <ClaudeCodeCard
               pathInfo={claudePathInfo}
-              isResolvingPath={isDiscovering || isResolvingClaude}
+              isResolvingPath={isResolvingClaude}
               customPath={claudeCustomPath}
               onCustomPathChange={setClaudeCustomPath}
               onRecheckPath={() => void handleCheckCustomPath("claude")}
             />
           </div>
 
+          {/* -- GitHub Copilot CLI Section -- */}
+          <div className="space-y-4">
+            <div className="flex items-center gap-2">
+              <ProviderIconBadge providerId="copilot" size="sm" />
+              <h3 className="text-base font-medium">{t('ai.copilot.title')}</h3>
+            </div>
+
+            <CopilotCliCard
+              pathInfo={copilotPathInfo}
+              isResolvingPath={isResolvingCopilot}
+              customPath={copilotCustomPath}
+              onCustomPathChange={setCopilotCustomPath}
+              onRecheckPath={() => void handleCheckCustomPath("copilot")}
+            />
+          </div>
+
           {/* -- Default Agent Section -- */}
           {agentOptions.length > 1 && (
             <div className="space-y-4">
@@ -507,7 +578,7 @@ const SettingsAITab: React.FC<SettingsAITabProps> = ({
                     value={defaultAgentId}
                     options={agentOptions}
                     onChange={setDefaultAgentId}
-                    className="w-48"
+                    className="w-64"
                   />
                 </SettingRow>
               </div>

components/settings/tabs/SettingsAppearanceTab.tsx

@@ -7,6 +7,8 @@ import { SUPPORTED_UI_LOCALES } from "../../../infrastructure/config/i18n";
 import { cn } from "../../../lib/utils";
 import { SectionHeader, SettingsTabContent, SettingRow, Toggle, Select } from "../settings-ui";
 import { FontSelect } from "../FontSelect";
+import { STORAGE_KEY_SHOW_RECENT_HOSTS } from "../../../infrastructure/config/storageKeys";
+import { useStoredBoolean } from "../../../application/state/useStoredBoolean";
 
 export default function SettingsAppearanceTab(props: {
   theme: "dark" | "light" | "system";
@@ -47,6 +49,11 @@ export default function SettingsAppearanceTab(props: {
     setCustomCSS,
   } = props;
 
+  const [showRecentHosts, setShowRecentHosts] = useStoredBoolean(
+    STORAGE_KEY_SHOW_RECENT_HOSTS,
+    true,
+  );
+
   const getHslStyle = useCallback((hsl: string) => ({ backgroundColor: `hsl(${hsl})` }), []);
 
   const hexToHsl = useCallback((hex: string) => {
@@ -254,6 +261,16 @@ export default function SettingsAppearanceTab(props: {
         </SettingRow>
       </div>
 
+      <SectionHeader title={t("settings.vault.title")} />
+      <div className="space-y-0 divide-y divide-border rounded-lg border bg-card px-4">
+        <SettingRow
+          label={t('settings.vault.showRecentHosts')}
+          description={t('settings.vault.showRecentHostsDesc')}
+        >
+          <Toggle checked={showRecentHosts} onChange={setShowRecentHosts} />
+        </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

@@ -28,10 +28,12 @@ const getOpenerLabel = (
 
 export default function SettingsFileAssociationsTab() {
   const { t } = useI18n();
-  const { getAllAssociations, removeAssociation, setOpenerForExtension } = useSftpFileAssociations();
-  const { sftpDoubleClickBehavior, setSftpDoubleClickBehavior, sftpAutoSync, setSftpAutoSync, sftpShowHiddenFiles, setSftpShowHiddenFiles, sftpUseCompressedUpload, setSftpUseCompressedUpload, sftpAutoOpenSidebar, setSftpAutoOpenSidebar } = useSettingsState();
+  const { getAllAssociations, removeAssociation, setOpenerForExtension, getDefaultOpener, setDefaultOpener, removeDefaultOpener } = useSftpFileAssociations();
+  const { sftpDoubleClickBehavior, setSftpDoubleClickBehavior, sftpAutoSync, setSftpAutoSync, sftpShowHiddenFiles, setSftpShowHiddenFiles, sftpUseCompressedUpload, setSftpUseCompressedUpload, sftpAutoOpenSidebar, setSftpAutoOpenSidebar, sftpDefaultViewMode, setSftpDefaultViewMode, sftpTransferConcurrency, setSftpTransferConcurrency } = useSettingsState();
   const associations = getAllAssociations();
+  const defaultOpener = getDefaultOpener();
   const [editingExtension, setEditingExtension] = useState<string | null>(null);
+  const [isSelectingDefaultApp, setIsSelectingDefaultApp] = useState(false);
 
   const handleRemove = useCallback((extension: string) => {
     if (confirm(t('settings.sftpFileAssociations.removeConfirm', { ext: extension === 'file' ? t('sftp.opener.noExtension') : extension }))) {
@@ -39,6 +41,22 @@ export default function SettingsFileAssociationsTab() {
     }
   }, [removeAssociation, t]);
 
+  const handleSelectDefaultSystemApp = useCallback(async () => {
+    setIsSelectingDefaultApp(true);
+    try {
+      const bridge = netcattyBridge.get();
+      if (!bridge?.selectApplication) return;
+      const result = await bridge.selectApplication();
+      if (result) {
+        setDefaultOpener('system-app', { path: result.path, name: result.name });
+      }
+    } catch (e) {
+      console.error('Failed to select application:', e);
+    } finally {
+      setIsSelectingDefaultApp(false);
+    }
+  }, [setDefaultOpener]);
+
   const handleEdit = useCallback(async (extension: string) => {
     setEditingExtension(extension);
     try {
@@ -130,6 +148,76 @@ export default function SettingsFileAssociationsTab() {
           </div>
         </div>
 
+        {/* Default view mode section */}
+        <div className="space-y-4">
+          <SectionHeader title={t('settings.sftp.defaultViewMode')} />
+          <p className="text-sm text-muted-foreground">
+            {t('settings.sftp.defaultViewMode.desc')}
+          </p>
+          <div className="space-y-3">
+            <button
+              onClick={() => setSftpDefaultViewMode('list')}
+              className={cn(
+                "w-full text-left p-4 rounded-lg border-2 transition-colors",
+                sftpDefaultViewMode === 'list'
+                  ? "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-full border-2 flex items-center justify-center mt-0.5 shrink-0",
+                  sftpDefaultViewMode === 'list'
+                    ? "border-primary"
+                    : "border-muted-foreground/30"
+                )}>
+                  {sftpDefaultViewMode === 'list' && (
+                    <div className="h-2.5 w-2.5 rounded-full bg-primary" />
+                  )}
+                </div>
+                <div className="space-y-1">
+                  <Label className="font-medium cursor-pointer">
+                    {t('settings.sftp.defaultViewMode.list')}
+                  </Label>
+                  <p className="text-sm text-muted-foreground">
+                    {t('settings.sftp.defaultViewMode.listDesc')}
+                  </p>
+                </div>
+              </div>
+            </button>
+            <button
+              onClick={() => setSftpDefaultViewMode('tree')}
+              className={cn(
+                "w-full text-left p-4 rounded-lg border-2 transition-colors",
+                sftpDefaultViewMode === 'tree'
+                  ? "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-full border-2 flex items-center justify-center mt-0.5 shrink-0",
+                  sftpDefaultViewMode === 'tree'
+                    ? "border-primary"
+                    : "border-muted-foreground/30"
+                )}>
+                  {sftpDefaultViewMode === 'tree' && (
+                    <div className="h-2.5 w-2.5 rounded-full bg-primary" />
+                  )}
+                </div>
+                <div className="space-y-1">
+                  <Label className="font-medium cursor-pointer">
+                    {t('settings.sftp.defaultViewMode.tree')}
+                  </Label>
+                  <p className="text-sm text-muted-foreground">
+                    {t('settings.sftp.defaultViewMode.treeDesc')}
+                  </p>
+                </div>
+              </div>
+            </button>
+          </div>
+        </div>
+
         {/* Auto-sync section */}
         <div className="space-y-4">
           <SectionHeader title={t('settings.sftp.autoSync')} />
@@ -290,6 +378,117 @@ export default function SettingsFileAssociationsTab() {
           </button>
         </div>
 
+        {/* Transfer concurrency section */}
+        <div className="space-y-4">
+          <SectionHeader title={t('settings.sftp.transferConcurrency')} />
+          <p className="text-sm text-muted-foreground">
+            {t('settings.sftp.transferConcurrency.desc')}
+          </p>
+          <div className="flex items-center gap-3">
+            <input
+              type="range"
+              min={1}
+              max={16}
+              step={1}
+              value={sftpTransferConcurrency}
+              onChange={(e) => setSftpTransferConcurrency(Number(e.target.value))}
+              className="flex-1 accent-primary"
+            />
+            <span className="text-sm font-mono w-6 text-center">{sftpTransferConcurrency}</span>
+          </div>
+        </div>
+
+        {/* Default opener section */}
+        <div className="space-y-4">
+          <SectionHeader title={t('settings.sftp.defaultOpener')} />
+          <p className="text-sm text-muted-foreground">
+            {t('settings.sftp.defaultOpener.desc')}
+          </p>
+          <div className="space-y-3">
+            <button
+              onClick={() => removeDefaultOpener()}
+              className={cn(
+                "w-full text-left p-4 rounded-lg border-2 transition-colors",
+                !defaultOpener
+                  ? "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-full border-2 flex items-center justify-center mt-0.5 shrink-0",
+                  !defaultOpener ? "border-primary" : "border-muted-foreground/30"
+                )}>
+                  {!defaultOpener && <div className="h-2.5 w-2.5 rounded-full bg-primary" />}
+                </div>
+                <div className="space-y-1">
+                  <Label className="font-medium cursor-pointer">
+                    {t('settings.sftp.defaultOpener.ask')}
+                  </Label>
+                  <p className="text-sm text-muted-foreground">
+                    {t('settings.sftp.defaultOpener.askDesc')}
+                  </p>
+                </div>
+              </div>
+            </button>
+            <button
+              onClick={() => setDefaultOpener('builtin-editor')}
+              className={cn(
+                "w-full text-left p-4 rounded-lg border-2 transition-colors",
+                defaultOpener?.openerType === 'builtin-editor'
+                  ? "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-full border-2 flex items-center justify-center mt-0.5 shrink-0",
+                  defaultOpener?.openerType === 'builtin-editor' ? "border-primary" : "border-muted-foreground/30"
+                )}>
+                  {defaultOpener?.openerType === 'builtin-editor' && <div className="h-2.5 w-2.5 rounded-full bg-primary" />}
+                </div>
+                <div className="space-y-1">
+                  <Label className="font-medium cursor-pointer">
+                    {t('sftp.opener.builtInEditor')}
+                  </Label>
+                  <p className="text-sm text-muted-foreground">
+                    {t('settings.sftp.defaultOpener.builtInDesc')}
+                  </p>
+                </div>
+              </div>
+            </button>
+            <button
+              onClick={handleSelectDefaultSystemApp}
+              disabled={isSelectingDefaultApp}
+              className={cn(
+                "w-full text-left p-4 rounded-lg border-2 transition-colors",
+                defaultOpener?.openerType === 'system-app'
+                  ? "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-full border-2 flex items-center justify-center mt-0.5 shrink-0",
+                  defaultOpener?.openerType === 'system-app' ? "border-primary" : "border-muted-foreground/30"
+                )}>
+                  {defaultOpener?.openerType === 'system-app' && <div className="h-2.5 w-2.5 rounded-full bg-primary" />}
+                </div>
+                <div className="space-y-1">
+                  <Label className="font-medium cursor-pointer">
+                    {defaultOpener?.openerType === 'system-app' && defaultOpener.systemApp
+                      ? defaultOpener.systemApp.name
+                      : t('settings.sftp.defaultOpener.systemApp')}
+                  </Label>
+                  <p className="text-sm text-muted-foreground">
+                    {t('settings.sftp.defaultOpener.systemAppDesc')}
+                  </p>
+                </div>
+              </div>
+            </button>
+          </div>
+        </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";

components/settings/tabs/SettingsSystemTab.tsx

@@ -89,6 +89,7 @@ interface SettingsSystemTabProps {
   checkNow: () => Promise<unknown>;
   installUpdate: () => void;
   openReleasePage: () => void;
+  startDownload: () => void;
 }
 
 const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
@@ -111,6 +112,7 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
   checkNow,
   installUpdate,
   openReleasePage,
+  startDownload,
 }) => {
   const { t } = useI18n();
   const isMac = typeof navigator !== "undefined" && /Mac/i.test(navigator.platform);
@@ -463,7 +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}>

components/settings/tabs/SettingsTerminalTab.tsx

@@ -7,14 +7,16 @@ import type {
   TerminalEmulationType,
   TerminalSettings,
 } from "../../../domain/models";
-import { DEFAULT_KEYWORD_HIGHLIGHT_RULES } from "../../../domain/models";
+import { DEFAULT_KEYWORD_HIGHLIGHT_RULES, type KeywordHighlightRule } from "../../../domain/models";
 import { useI18n } from "../../../application/i18n/I18nProvider";
 import { MAX_FONT_SIZE, MIN_FONT_SIZE, type TerminalFont } from "../../../infrastructure/config/fonts";
 import { TERMINAL_THEMES } from "../../../infrastructure/config/terminalThemes";
 import { customThemeStore, useCustomThemes } from "../../../application/state/customThemeStore";
 import { parseItermcolors } from "../../../infrastructure/parsers/itermcolorsParser";
 import { cn } from "../../../lib/utils";
+import { useDiscoveredShells } from "../../../lib/useDiscoveredShells";
 import { Button } from "../../ui/button";
+import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle } from "../../ui/dialog";
 import { Input } from "../../ui/input";
 import { Label } from "../../ui/label";
 import { SectionHeader, Select, SettingsTabContent, SettingRow, Toggle } from "../settings-ui";
@@ -23,6 +25,193 @@ import { TerminalFontSelect } from "../TerminalFontSelect";
 import { CustomThemeModal } from "../../terminal/CustomThemeModal";
 import type { TerminalTheme } from "../../../domain/models";
 
+// Keyword highlight rules editor for global settings
+const DEFAULT_NEW_RULE_COLOR = '#F87171';
+
+const AddCustomRuleDialog: React.FC<{
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  editRule?: KeywordHighlightRule | null;
+  onAdd: (rule: KeywordHighlightRule) => void;
+}> = ({ open, onOpenChange, editRule, onAdd }) => {
+  const { t } = useI18n();
+  const [label, setLabel] = useState('');
+  const [pattern, setPattern] = useState('');
+  const [color, setColor] = useState(DEFAULT_NEW_RULE_COLOR);
+  const [patternError, setPatternError] = useState<string | null>(null);
+
+  const reset = () => { setLabel(''); setPattern(''); setColor(DEFAULT_NEW_RULE_COLOR); setPatternError(null); };
+
+  // Populate form when editing
+  useEffect(() => {
+    if (open && editRule) {
+      setLabel(editRule.label);
+      setPattern(editRule.patterns[0] || '');
+      setColor(editRule.color);
+      setPatternError(null);
+    } else if (!open) {
+      reset();
+    }
+  }, [open, editRule]);
+
+  const handleSubmit = () => {
+    if (!label.trim() || !pattern.trim()) return;
+    try { new RegExp(pattern, 'gi'); } catch {
+      setPatternError(t('settings.terminal.keywordHighlight.invalidPattern'));
+      return;
+    }
+    // When editing, replace only the first pattern and keep any additional ones
+    const patterns = editRule
+      ? [pattern, ...editRule.patterns.slice(1)]
+      : [pattern];
+    onAdd({ id: editRule?.id ?? crypto.randomUUID(), label: label.trim(), patterns, color, enabled: editRule?.enabled ?? true });
+    reset();
+    onOpenChange(false);
+  };
+
+  return (
+    <Dialog open={open} onOpenChange={(v) => { if (!v) reset(); onOpenChange(v); }}>
+      <DialogContent className="sm:max-w-[400px]">
+        <DialogHeader>
+          <DialogTitle>{editRule ? t('settings.terminal.keywordHighlight.editCustom') : t('settings.terminal.keywordHighlight.addCustom')}</DialogTitle>
+        </DialogHeader>
+        <div className="space-y-3 py-2">
+          <div className="space-y-1.5">
+            <Label className="text-xs">{t('settings.terminal.keywordHighlight.labelField')}</Label>
+            <div className="flex gap-2">
+              <Input
+                placeholder={t('settings.terminal.keywordHighlight.labelPlaceholder')}
+                value={label}
+                onChange={(e) => setLabel(e.target.value)}
+                className="flex-1"
+              />
+              <label className="relative flex-shrink-0">
+                <input type="color" value={color} onChange={(e) => setColor(e.target.value)} className="sr-only" />
+                <span className="block w-9 h-9 rounded-md cursor-pointer border border-border/50 hover:border-border" style={{ backgroundColor: color }} />
+              </label>
+            </div>
+          </div>
+          <div className="space-y-1.5">
+            <Label className="text-xs">{t('settings.terminal.keywordHighlight.patternField')}</Label>
+            <Input
+              placeholder={t('settings.terminal.keywordHighlight.patternPlaceholder')}
+              value={pattern}
+              onChange={(e) => { setPattern(e.target.value); if (patternError) setPatternError(null); }}
+              onKeyDown={(e) => { if (e.key === 'Enter') handleSubmit(); }}
+              className={cn("font-mono", patternError && "border-destructive")}
+            />
+            {patternError && <div className="text-xs text-destructive">{patternError}</div>}
+          </div>
+          {label.trim() && pattern.trim() && !patternError && (
+            <div className="flex items-center gap-2 p-2 rounded-md bg-muted/50">
+              <span className="text-xs text-muted-foreground">{t('settings.terminal.keywordHighlight.preview')}:</span>
+              <span className="text-sm font-medium" style={{ color }}>{label}</span>
+            </div>
+          )}
+        </div>
+        <DialogFooter>
+          <Button variant="outline" onClick={() => { reset(); onOpenChange(false); }}>{t('common.cancel')}</Button>
+          <Button onClick={handleSubmit} disabled={!label.trim() || !pattern.trim()}>{editRule ? t('common.save') : t('common.add')}</Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+};
+
+const KeywordHighlightRulesEditor: React.FC<{
+  rules: KeywordHighlightRule[];
+  onChange: (rules: KeywordHighlightRule[]) => void;
+}> = ({ rules, onChange }) => {
+  const { t } = useI18n();
+  const [addDialogOpen, setAddDialogOpen] = useState(false);
+  const [editingRule, setEditingRule] = useState<KeywordHighlightRule | null>(null);
+
+  const isBuiltIn = (id: string) => DEFAULT_KEYWORD_HIGHLIGHT_RULES.some((r) => r.id === id);
+
+  return (
+    <div className="space-y-2.5">
+      {rules.map((rule) => {
+        const custom = !isBuiltIn(rule.id);
+        return (
+          <div key={rule.id} className="flex items-center gap-2 group">
+            <div className="flex-1 min-w-0 flex items-center gap-1.5">
+              <span className={cn("text-sm truncate", !rule.enabled && "text-muted-foreground line-through")} style={rule.enabled ? { color: rule.color } : undefined}>
+                {rule.label}
+              </span>
+              {custom && (
+                <>
+                  <Pencil
+                    size={10}
+                    className="flex-shrink-0 opacity-0 group-hover:opacity-100 transition-opacity text-muted-foreground cursor-pointer"
+                    onClick={() => { setEditingRule(rule); setAddDialogOpen(true); }}
+                  />
+                  <Trash2
+                    size={10}
+                    className="flex-shrink-0 opacity-0 group-hover:opacity-100 transition-opacity text-muted-foreground cursor-pointer"
+                    onClick={() => onChange(rules.filter((r) => r.id !== rule.id))}
+                  />
+                </>
+              )}
+            </div>
+            <label className="relative flex-shrink-0">
+              <input
+                type="color"
+                value={rule.color}
+                onChange={(e) => onChange(rules.map((r) => r.id === rule.id ? { ...r, color: e.target.value } : r))}
+                className="sr-only"
+              />
+              <span
+                className="block w-8 h-5 rounded cursor-pointer border border-border/50 hover:border-border transition-colors"
+                style={{ backgroundColor: rule.color }}
+              />
+            </label>
+          </div>
+        );
+      })}
+
+      <div className="flex pt-2 mt-2 border-t border-border/50">
+        <Button
+          variant="ghost"
+          size="sm"
+          className="flex-1 text-muted-foreground hover:text-foreground"
+          onClick={() => setAddDialogOpen(true)}
+        >
+          <Plus size={14} className="mr-1.5" />
+          {t('settings.terminal.keywordHighlight.addCustom')}
+        </Button>
+        <Button
+          variant="ghost"
+          size="sm"
+          className="flex-1 text-muted-foreground hover:text-foreground"
+          onClick={() => {
+            onChange(rules.map((rule) => {
+              const def = DEFAULT_KEYWORD_HIGHLIGHT_RULES.find((r) => r.id === rule.id);
+              return def ? { ...rule, color: def.color } : rule;
+            }));
+          }}
+        >
+          <RotateCcw size={14} className="mr-1.5" />
+          {t("settings.terminal.keywordHighlight.resetColors")}
+        </Button>
+      </div>
+
+      <AddCustomRuleDialog
+        open={addDialogOpen}
+        onOpenChange={(v) => { setAddDialogOpen(v); if (!v) setEditingRule(null); }}
+        editRule={editingRule}
+        onAdd={(rule) => {
+          if (editingRule) {
+            onChange(rules.map((r) => r.id === editingRule.id ? rule : r));
+          } else {
+            onChange([...rules, rule]);
+          }
+          setEditingRule(null);
+        }}
+      />
+    </div>
+  );
+};
+
 // Theme preview button component
 const ThemePreviewButton: React.FC<{
   theme: (typeof TERMINAL_THEMES)[0];
@@ -84,6 +273,8 @@ export default function SettingsTerminalTab(props: {
     value: TerminalSettings[K],
   ) => void;
   availableFonts: TerminalFont[];
+  workspaceFocusStyle: 'dim' | 'border';
+  setWorkspaceFocusStyle: (style: 'dim' | 'border') => void;
 }) {
   const {
     terminalThemeId,
@@ -95,6 +286,8 @@ export default function SettingsTerminalTab(props: {
     terminalSettings,
     updateTerminalSetting,
     availableFonts,
+    workspaceFocusStyle,
+    setWorkspaceFocusStyle,
   } = props;
   const { t } = useI18n();
 
@@ -102,6 +295,20 @@ export default function SettingsTerminalTab(props: {
   const [defaultShell, setDefaultShell] = useState<string>("");
   const [shellValidation, setShellValidation] = useState<{ valid: boolean; message?: string } | null>(null);
   const [dirValidation, setDirValidation] = useState<{ valid: boolean; message?: string } | null>(null);
+
+  const discoveredShells = useDiscoveredShells();
+  const [showCustomShellInput, setShowCustomShellInput] = useState(() => {
+    if (!terminalSettings.localShell) return false;
+    return !discoveredShells.some(s => s.id === terminalSettings.localShell);
+  });
+  const [customShellModalOpen, setCustomShellModalOpen] = useState(false);
+  const [customShellDraft, setCustomShellDraft] = useState("");
+
+  // Update showCustomShellInput once discovered shells load
+  useEffect(() => {
+    if (!terminalSettings.localShell) return;
+    setShowCustomShellInput(!discoveredShells.some(s => s.id === terminalSettings.localShell));
+  }, [discoveredShells, terminalSettings.localShell]);
   const [themeModalOpen, setThemeModalOpen] = useState(false);
 
   // Subscribe to custom theme changes so editing in-place triggers re-render
@@ -114,6 +321,20 @@ 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>) => {
@@ -192,7 +413,7 @@ export default function SettingsTerminalTab(props: {
     }
   }, []);
 
-  // Validate shell path when it changes
+  // Validate shell path when it changes (only for custom paths, not discovered shell ids)
   useEffect(() => {
     const bridge = (window as unknown as { netcatty?: NetcattyBridge }).netcatty;
     const shellPath = terminalSettings.localShell;
@@ -202,6 +423,12 @@ export default function SettingsTerminalTab(props: {
       return;
     }
 
+    // Skip validation for discovered shell ids — only validate custom paths
+    if (discoveredShells.some(s => s.id === shellPath)) {
+      setShellValidation(null);
+      return;
+    }
+
     if (!bridge?.validatePath) {
       setShellValidation(null);
       return;
@@ -222,7 +449,7 @@ export default function SettingsTerminalTab(props: {
     }, 300);
 
     return () => clearTimeout(timeoutId);
-  }, [terminalSettings.localShell, t]);
+  }, [terminalSettings.localShell, discoveredShells, t]);
 
   // Validate directory path when it changes
   useEffect(() => {
@@ -616,6 +843,13 @@ 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")}
@@ -669,47 +903,10 @@ export default function SettingsTerminalTab(props: {
           />
         </div>
         {terminalSettings.keywordHighlightEnabled && (
-          <div className="space-y-2.5">
-            {terminalSettings.keywordHighlightRules.map((rule) => (
-              <div key={rule.id} className="flex items-center justify-between">
-                <span className="text-sm" style={{ color: rule.color }}>
-                  {rule.label}
-                </span>
-                <label className="relative">
-                  <input
-                    type="color"
-                    value={rule.color}
-                    onChange={(e) => {
-                      const newRules = terminalSettings.keywordHighlightRules.map((r) =>
-                        r.id === rule.id ? { ...r, color: e.target.value } : r,
-                      );
-                      updateTerminalSetting("keywordHighlightRules", newRules);
-                    }}
-                    className="sr-only"
-                  />
-                  <span
-                    className="block w-10 h-6 rounded-md cursor-pointer border border-border/50 hover:border-border transition-colors"
-                    style={{ backgroundColor: rule.color }}
-                  />
-                </label>
-              </div>
-            ))}
-            <Button
-              variant="ghost"
-              size="sm"
-              className="w-full mt-3 text-muted-foreground hover:text-foreground"
-              onClick={() => {
-                const resetRules = terminalSettings.keywordHighlightRules.map((rule) => {
-                  const defaultRule = DEFAULT_KEYWORD_HIGHLIGHT_RULES.find((r) => r.id === rule.id);
-                  return defaultRule ? { ...rule, color: defaultRule.color } : rule;
-                });
-                updateTerminalSetting("keywordHighlightRules", resetRules);
-              }}
-            >
-              <RotateCcw size={14} className="mr-2" />
-              {t("settings.terminal.keywordHighlight.resetColors")}
-            </Button>
-          </div>
+          <KeywordHighlightRulesEditor
+            rules={terminalSettings.keywordHighlightRules}
+            onChange={(rules) => updateTerminalSetting("keywordHighlightRules", rules)}
+          />
         )}
       </div>
 
@@ -720,24 +917,43 @@ export default function SettingsTerminalTab(props: {
           description={t("settings.terminal.localShell.shell.desc")}
         >
           <div className="flex flex-col gap-1 items-end">
-            <Input
-              value={terminalSettings.localShell}
-              placeholder={t("settings.terminal.localShell.shell.placeholder")}
-              onChange={(e) => updateTerminalSetting("localShell", e.target.value)}
-              className={cn(
-                "w-48",
-                shellValidation && !shellValidation.valid && "border-destructive focus-visible:ring-destructive"
-              )}
-            />
-            {defaultShell && !terminalSettings.localShell && (
-              <span className="text-xs text-muted-foreground">
-                {t("settings.terminal.localShell.shell.detected")}: {defaultShell}
+            <select
+              className="h-9 w-48 rounded-md border border-input bg-background px-3 text-sm"
+              value={
+                showCustomShellInput
+                  ? "__custom__"
+                  : terminalSettings.localShell || ""
+              }
+              onChange={(e) => {
+                const value = e.target.value;
+                if (value === "__custom__") {
+                  setCustomShellDraft(terminalSettings.localShell || "");
+                  setCustomShellModalOpen(true);
+                } else {
+                  setShowCustomShellInput(false);
+                  updateTerminalSetting("localShell", value);
+                }
+              }}
+            >
+              <option value="">
+                {t("settings.terminal.localShell.shell.default")}
+                {defaultShell ? ` (${defaultShell.split(/[/\\]/).pop()})` : ""}
+              </option>
+              {discoveredShells.map((shell) => (
+                <option key={shell.id} value={shell.id}>
+                  {shell.name}
+                </option>
+              ))}
+              <option value="__custom__">{t("settings.terminal.localShell.shell.custom")}</option>
+            </select>
+            {showCustomShellInput && (
+              <span className="text-xs text-muted-foreground truncate max-w-48">
+                {terminalSettings.localShell}
               </span>
             )}
-            {shellValidation && !shellValidation.valid && shellValidation.message && (
-              <span className="text-xs text-destructive flex items-center gap-1">
-                <AlertCircle size={12} />
-                {shellValidation.message}
+            {!showCustomShellInput && defaultShell && !terminalSettings.localShell && (
+              <span className="text-xs text-muted-foreground">
+                {t("settings.terminal.localShell.shell.detected")}: {defaultShell}
               </span>
             )}
           </div>
@@ -837,13 +1053,130 @@ export default function SettingsTerminalTab(props: {
             options={[
               { value: "auto", label: t("settings.terminal.rendering.auto") },
               { value: "webgl", label: "WebGL" },
-              { value: "canvas", label: "Canvas" },
+              { value: "dom", label: "DOM" },
             ]}
-            onChange={(v) => updateTerminalSetting("rendererType", v as "auto" | "webgl" | "canvas")}
+            onChange={(v) => updateTerminalSetting("rendererType", v as "auto" | "webgl" | "dom")}
             className="w-32"
           />
         </SettingRow>
       </div>
+      {/* Autocomplete */}
+      <SectionHeader title={t("settings.terminal.section.workspaceFocus")} />
+      <div className="space-y-1">
+        <SettingRow
+          label={t("settings.terminal.workspaceFocus.style")}
+          description={t("settings.terminal.workspaceFocus.style.desc")}
+        >
+          <Select
+            value={workspaceFocusStyle}
+            onChange={(v) => setWorkspaceFocusStyle(v as 'dim' | 'border')}
+            options={[
+              { value: 'dim', label: t("settings.terminal.workspaceFocus.dim") },
+              { value: 'border', label: t("settings.terminal.workspaceFocus.border") },
+            ]}
+          />
+        </SettingRow>
+      </div>
+
+      <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>
+      {/* Custom Shell Modal */}
+      <Dialog open={customShellModalOpen} onOpenChange={setCustomShellModalOpen}>
+        <DialogContent className="sm:max-w-[480px]">
+          <DialogHeader>
+            <DialogTitle>{t("settings.terminal.localShell.shell.custom")}</DialogTitle>
+          </DialogHeader>
+          <div className="space-y-4 py-2">
+            <div className="space-y-2">
+              <label className="text-sm font-medium">{t("settings.terminal.localShell.shell.customPath")}</label>
+              <Input
+                value={customShellDraft}
+                placeholder={t("settings.terminal.localShell.shell.placeholder")}
+                onChange={(e) => setCustomShellDraft(e.target.value)}
+                className="w-full"
+                autoFocus
+              />
+              {shellValidation && !shellValidation.valid && shellValidation.message && (
+                <span className="text-xs text-destructive flex items-center gap-1">
+                  <AlertCircle size={12} />
+                  {shellValidation.message}
+                </span>
+              )}
+              {shellValidation?.valid && (
+                <span className="text-xs text-emerald-600 dark:text-emerald-400 flex items-center gap-1">
+                  ✓ {t("settings.terminal.localShell.shell.pathValid")}
+                </span>
+              )}
+            </div>
+            <div className="space-y-1.5">
+              <label className="text-xs text-muted-foreground">{t("settings.terminal.localShell.shell.commonPaths")}</label>
+              <div className="flex flex-wrap gap-1.5">
+                {["/bin/bash", "/bin/zsh", "/usr/bin/fish", "/bin/sh", "powershell.exe", "pwsh.exe", "cmd.exe"].map((p) => (
+                  <button
+                    key={p}
+                    type="button"
+                    onClick={() => setCustomShellDraft(p)}
+                    className="text-xs px-2 py-1 rounded-md border border-border bg-muted/50 hover:bg-muted transition-colors"
+                  >
+                    {p}
+                  </button>
+                ))}
+              </div>
+            </div>
+          </div>
+          <DialogFooter>
+            <button
+              type="button"
+              onClick={() => setCustomShellModalOpen(false)}
+              className="px-3 py-1.5 text-sm rounded-md border border-border hover:bg-muted transition-colors"
+            >
+              {t("common.cancel")}
+            </button>
+            <button
+              type="button"
+              onClick={() => {
+                updateTerminalSetting("localShell", customShellDraft);
+                setShowCustomShellInput(true);
+                setCustomShellModalOpen(false);
+              }}
+              disabled={!customShellDraft.trim()}
+              className="px-3 py-1.5 text-sm rounded-md bg-primary text-primary-foreground hover:bg-primary/90 transition-colors disabled:opacity-50"
+            >
+              {t("common.save")}
+            </button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
     </SettingsTabContent>
   );
 }

components/settings/tabs/ai/CopilotCliCard.tsx

@@ -0,0 +1,87 @@
+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 CopilotCliCard: 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.copilot.detecting')
+    : found
+      ? t('ai.copilot.detected')
+      : t('ai.copilot.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="copilot" size="sm" />
+            <span className="text-sm font-medium">{t('ai.copilot.title')}</span>
+          </div>
+          <p className="text-xs text-muted-foreground mt-2 leading-5">
+            {t('ai.copilot.description')}
+          </p>
+        </div>
+        <div className={cn("text-xs font-medium shrink-0", statusClassName)}>
+          {statusText}
+        </div>
+      </div>
+
+      {found ? (
+        <div className="flex items-center gap-2 text-xs">
+          <span className="text-muted-foreground">{t('ai.copilot.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.copilot.notFoundHint')}
+          </p>
+          <div className="flex items-center gap-2">
+            <input
+              type="text"
+              value={customPath}
+              onChange={(e) => onCustomPathChange(e.target.value)}
+              placeholder={t('ai.copilot.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.copilot.check')}
+            </Button>
+          </div>
+        </div>
+      ) : null}
+    </div>
+  );
+};

components/settings/tabs/ai/ProviderConfigForm.tsx

@@ -1,6 +1,6 @@
 import React, { useCallback, useEffect, useState } from "react";
-import { Check, Eye, EyeOff } from "lucide-react";
-import type { ProviderConfig } from "../../../../infrastructure/ai/types";
+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";
@@ -20,10 +20,12 @@ export const ProviderConfigForm: React.FC<{
     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];
 
@@ -43,11 +45,37 @@ export const ProviderConfigForm: React.FC<{
     }
   }, [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() } : {}),
     };
 
@@ -137,6 +165,92 @@ export const ProviderConfigForm: React.FC<{
         <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()}>

components/settings/tabs/ai/ProviderIconBadge.tsx

@@ -20,7 +20,8 @@ export const ProviderIconBadge: React.FC<{
       aria-hidden="true"
       draggable={false}
       className={cn(
-        "object-contain brightness-0 invert",
+        "object-contain",
+        providerId === "copilot" ? "brightness-0" : "brightness-0 invert",
         size === "sm" ? "w-3 h-3" : "w-4 h-4",
       )}
     />

components/settings/tabs/ai/index.ts

@@ -5,4 +5,5 @@ export { ProviderCard } from "./ProviderCard";
 export { AddProviderDropdown } from "./AddProviderDropdown";
 export { CodexConnectionCard } from "./CodexConnectionCard";
 export { ClaudeCodeCard } from "./ClaudeCodeCard";
+export { CopilotCliCard } from "./CopilotCliCard";
 export { SafetySettings } from "./SafetySettings";

components/settings/tabs/ai/types.ts

@@ -4,6 +4,7 @@
 import type {
   AIProviderId,
   ExternalAgentConfig,
+  ProviderAdvancedParams,
 } from "../../../../infrastructure/ai/types";
 
 export type CodexIntegrationState =
@@ -42,6 +43,7 @@ export interface ProviderFormState {
   baseURL: string;
   defaultModel: string;
   skipTLSVerify: boolean;
+  advancedParams: ProviderAdvancedParams;
 }
 
 export interface FetchedModel {
@@ -80,6 +82,13 @@ export const AGENT_DEFAULTS: Record<string, Omit<ExternalAgentConfig, "id" | "co
     acpCommand: "claude-agent-acp",
     acpArgs: [],
   },
+  copilot: {
+    name: "GitHub Copilot CLI",
+    args: ["-p", "{prompt}"],
+    icon: "copilot",
+    acpCommand: "copilot",
+    acpArgs: ["--acp", "--stdio"],
+  },
 };
 
 // ---------------------------------------------------------------------------
@@ -106,12 +115,13 @@ export function normalizeCodexBridgeError(error: unknown): string {
 // Provider icon helper
 // ---------------------------------------------------------------------------
 
-export type SettingsIconId = AIProviderId | "claude";
+export type SettingsIconId = AIProviderId | "claude" | "copilot";
 
 export const SETTINGS_ICON_PATHS: Record<SettingsIconId, string> = {
   openai: "/ai/providers/openai.svg",
   anthropic: "/ai/providers/anthropic.svg",
   claude: "/ai/agents/claude.svg",
+  copilot: "/ai/agents/copilot.svg",
   google: "/ai/providers/google.svg",
   ollama: "/ai/providers/ollama.svg",
   openrouter: "/ai/providers/openrouter.svg",
@@ -122,6 +132,7 @@ export const SETTINGS_ICON_COLORS: Record<SettingsIconId, string> = {
   openai: "bg-emerald-600",
   anthropic: "bg-orange-600",
   claude: "bg-orange-600",
+  copilot: "border border-zinc-300 bg-white",
   google: "bg-blue-600",
   ollama: "bg-purple-600",
   openrouter: "bg-pink-600",

components/sftp/SftpContext.tsx

@@ -9,37 +9,53 @@
 import React, { createContext, useContext, useMemo, useSyncExternalStore } from "react";
 import { Host, SftpFileEntry, SftpFilenameEncoding } from "../../types";
 
+export interface SftpTransferSource {
+    name: string;
+    isDirectory: boolean;
+    sourcePath?: string;
+    sourceConnectionId?: string;
+    targetPath?: string;
+}
+
 // Types for the context
 export interface SftpPaneCallbacks {
     onConnect: (host: Host | "local") => void;
     onDisconnect: () => void;
+    onPrepareSelection: () => void;
     onNavigateTo: (path: string) => void;
     onNavigateUp: () => void;
     onRefresh: () => void;
+    onRefreshTab: (tabId: string) => void;
     onSetFilenameEncoding: (encoding: SftpFilenameEncoding) => void;
-    onOpenEntry: (entry: SftpFileEntry) => void;
+    onOpenEntry: (entry: SftpFileEntry, fullPath?: string) => void;
     onToggleSelection: (fileName: string, multiSelect: boolean) => void;
     onRangeSelect: (fileNames: string[]) => void;
     onClearSelection: () => void;
     onSetFilter: (filter: string) => void;
     onCreateDirectory: (name: string) => Promise<void>;
+    onCreateDirectoryAtPath: (path: string, name: string) => Promise<void>;
     onCreateFile: (name: string) => Promise<void>;
+    onCreateFileAtPath: (path: string, name: string) => Promise<void>;
     onDeleteFiles: (fileNames: string[]) => Promise<void>;
+    onDeleteFilesAtPath: (connectionId: string, path: string, fileNames: string[]) => Promise<void>;
     onRenameFile: (oldName: string, newName: string) => Promise<void>;
-    onCopyToOtherPane: (files: { name: string; isDirectory: boolean }[]) => void;
-    onReceiveFromOtherPane: (files: { name: string; isDirectory: boolean }[]) => void;
-    onEditPermissions?: (file: SftpFileEntry) => void;
+    onRenameFileAtPath: (oldPath: string, newName: string) => Promise<void>;
+    onMoveEntriesToPath: (sourcePaths: string[], targetPath: string) => Promise<void>;
+    onCopyToOtherPane: (files: SftpTransferSource[]) => void;
+    onReceiveFromOtherPane: (files: SftpTransferSource[]) => void;
+    onEditPermissions?: (file: SftpFileEntry, fullPath?: string) => void;
     // File operations
-    onEditFile?: (entry: SftpFileEntry) => void;
-    onOpenFile?: (entry: SftpFileEntry) => void;
-    onOpenFileWith?: (entry: SftpFileEntry) => void;  // Always show opener dialog
-    onDownloadFile?: (entry: SftpFileEntry) => void;  // Download to local filesystem
+    onEditFile?: (entry: SftpFileEntry, fullPath?: string) => void;
+    onOpenFile?: (entry: SftpFileEntry, fullPath?: string) => void;
+    onOpenFileWith?: (entry: SftpFileEntry, fullPath?: string) => void;  // Always show opener dialog
+    onDownloadFile?: (entry: SftpFileEntry, fullPath?: string) => void;  // Download to local filesystem
     // External file upload (supports folders via DataTransfer)
-    onUploadExternalFiles?: (dataTransfer: DataTransfer) => Promise<void>;
+    onUploadExternalFiles?: (dataTransfer: DataTransfer, targetPath?: string) => Promise<void>;
+    onListDirectory: (path: string) => Promise<SftpFileEntry[]>;
 }
 
 export interface SftpDragCallbacks {
-    onDragStart: (files: { name: string; isDirectory: boolean }[], side: "left" | "right") => void;
+    onDragStart: (files: SftpTransferSource[], side: "left" | "right") => void;
     onDragEnd: () => void;
 }
 
@@ -91,16 +107,18 @@ export interface SftpContextValue {
     // Host updater for bookmark persistence
     updateHosts: (hosts: Host[]) => void;
 
-    // Drag state (shared between panes)
-    draggedFiles: { name: string; isDirectory: boolean; side: "left" | "right" }[] | null;
-    dragCallbacks: SftpDragCallbacks;
-
     // Callbacks for each side
     leftCallbacks: SftpPaneCallbacks;
     rightCallbacks: SftpPaneCallbacks;
 }
 
+export interface SftpDragContextValue {
+    draggedFiles: (SftpTransferSource & { side: "left" | "right" })[] | null;
+    dragCallbacks: SftpDragCallbacks;
+}
+
 const SftpContext = createContext<SftpContextValue | null>(null);
+const SftpDragContext = createContext<SftpDragContextValue | null>(null);
 
 export const useSftpContext = () => {
     const context = useContext(SftpContext);
@@ -116,13 +134,19 @@ export const useSftpPaneCallbacks = (side: "left" | "right"): SftpPaneCallbacks
     return side === "left" ? context.leftCallbacks : context.rightCallbacks;
 };
 
-// Hook to get drag-related values
+// Hook to get drag-related values (reads from separate SftpDragContext)
 export const useSftpDrag = () => {
-    const context = useSftpContext();
-    return {
-        draggedFiles: context.draggedFiles,
-        ...context.dragCallbacks,
-    };
+    const context = useContext(SftpDragContext);
+    if (!context) {
+        throw new Error("useSftpDrag must be used within SftpContextProvider");
+    }
+    return useMemo(
+        () => ({
+            draggedFiles: context.draggedFiles,
+            ...context.dragCallbacks,
+        }),
+        [context.draggedFiles, context.dragCallbacks],
+    );
 };
 
 // Hook to get hosts
@@ -140,7 +164,7 @@ export const useSftpUpdateHosts = () => {
 interface SftpContextProviderProps {
     hosts: Host[];
     updateHosts: (hosts: Host[]) => void;
-    draggedFiles: { name: string; isDirectory: boolean; side: "left" | "right" }[] | null;
+    draggedFiles: (SftpTransferSource & { side: "left" | "right" })[] | null;
     dragCallbacks: SftpDragCallbacks;
     leftCallbacks: SftpPaneCallbacks;
     rightCallbacks: SftpPaneCallbacks;
@@ -156,19 +180,29 @@ export const SftpContextProvider: React.FC<SftpContextProviderProps> = ({
     rightCallbacks,
     children,
 }) => {
-    // Memoize the context value to prevent unnecessary re-renders
-    // Note: The callbacks objects should be stable (created with useMemo in parent)
+    // Memoize the main context value (no drag state, so drag changes won't cause re-renders here)
     const value = useMemo<SftpContextValue>(
         () => ({
             hosts,
             updateHosts,
-            draggedFiles,
-            dragCallbacks,
             leftCallbacks,
             rightCallbacks,
         }),
-        [hosts, updateHosts, draggedFiles, dragCallbacks, leftCallbacks, rightCallbacks],
+        [hosts, updateHosts, leftCallbacks, rightCallbacks],
     );
 
-    return <SftpContext.Provider value={value}>{children}</SftpContext.Provider>;
+    // Memoize drag context separately so only drag consumers re-render on drag state changes
+    const dragValue = useMemo<SftpDragContextValue>(
+        () => ({
+            draggedFiles,
+            dragCallbacks,
+        }),
+        [draggedFiles, dragCallbacks],
+    );
+
+    return (
+        <SftpContext.Provider value={value}>
+            <SftpDragContext.Provider value={dragValue}>{children}</SftpDragContext.Provider>
+        </SftpContext.Provider>
+    );
 };

components/sftp/SftpFileRow.tsx

@@ -6,12 +6,13 @@ import { Folder, Link } from 'lucide-react';
 import React, { memo, useCallback } from 'react';
 import { cn } from '../../lib/utils';
 import { SftpFileEntry } from '../../types';
-import { ColumnWidths, formatBytes, formatDate, getFileIcon, isNavigableDirectory } from './utils';
+import { buildSftpColumnTemplate, ColumnWidths, formatBytes, formatDate, getFileIcon, isNavigableDirectory } from './utils';
 
 interface SftpFileRowProps {
     entry: SftpFileEntry;
     index: number;
     isSelected: boolean;
+    showSelectionHighlight: boolean;
     isDragOver: boolean;
     columnWidths: ColumnWidths;
     onSelect: (entry: SftpFileEntry, index: number, e: React.MouseEvent) => void;
@@ -27,6 +28,7 @@ const SftpFileRowInner: React.FC<SftpFileRowProps> = ({
     entry,
     index,
     isSelected,
+    showSelectionHighlight,
     isDragOver,
     columnWidths,
     onSelect,
@@ -58,10 +60,13 @@ const SftpFileRowInner: React.FC<SftpFileRowProps> = ({
     const handleDrop = useCallback((e: React.DragEvent) => {
         onDrop(entry, e);
     }, [entry, onDrop]);
+    const isSelectionVisible = isSelected && showSelectionHighlight;
 
     return (
         <div
             data-sftp-row="true"
+            data-entry-name={entry.name}
+            data-selected={isSelected ? "true" : "false"}
             draggable={!isParentDir}
             onDragStart={handleDragStart}
             onDragEnd={onDragEnd}
@@ -71,33 +76,53 @@ const SftpFileRowInner: React.FC<SftpFileRowProps> = ({
             onClick={handleSelect}
             onDoubleClick={handleOpen}
             className={cn(
-                "px-4 py-2 items-center cursor-pointer text-sm transition-colors",
-                isSelected ? "bg-primary/15 text-foreground" : "hover:bg-secondary/40",
+                "px-4 py-2 items-center cursor-pointer text-sm",
+                isSelectionVisible
+                    ? "bg-accent text-accent-foreground hover:bg-accent"
+                    : "hover:bg-accent/50",
                 isDragOver && isNavDir && "bg-primary/25 ring-1 ring-primary/50"
             )}
-            style={{ display: 'grid', gridTemplateColumns: `${columnWidths.name}% ${columnWidths.modified}% ${columnWidths.size}% ${columnWidths.type}%` }}
+            style={{ display: 'grid', gridTemplateColumns: buildSftpColumnTemplate(columnWidths) }}
         >
             <div className="flex items-center gap-3 min-w-0">
                 <div className={cn(
                     "h-7 w-7 rounded flex items-center justify-center shrink-0 relative",
-                    isNavDir ? "bg-primary/10 text-primary" : "bg-secondary/60 text-muted-foreground"
+                    isSelectionVisible
+                        ? "bg-accent-foreground/10 text-accent-foreground"
+                        : isNavDir
+                            ? "bg-primary/10 text-primary"
+                            : "bg-secondary/60 text-muted-foreground"
                 )}>
                     {isNavDir ? <Folder size={14} /> : getFileIcon(entry)}
                     {/* Show link indicator for symlinks */}
                     {entry.type === 'symlink' && (
-                        <Link size={8} className="absolute -bottom-0.5 -right-0.5 text-muted-foreground" aria-hidden="true" />
+                        <Link
+                            size={8}
+                            className={cn(
+                                "absolute -bottom-0.5 -right-0.5",
+                                isSelectionVisible ? "text-accent-foreground/80" : "text-muted-foreground",
+                            )}
+                            aria-hidden="true"
+                        />
                     )}
                 </div>
-                <span className={cn("truncate", entry.type === 'symlink' && "italic pr-1")}>
+                <span
+                    className={cn(
+                        "truncate",
+                        entry.type === 'symlink' && "italic pr-1",
+                        isSelectionVisible && "font-medium",
+                    )}
+                    title={entry.name}
+                >
                     {entry.name}
                     {entry.type === 'symlink' && <span className="sr-only"> (symbolic link)</span>}
                 </span>
             </div>
-            <span className="text-xs text-muted-foreground truncate">{modifiedLabel}</span>
-            <span className="text-xs text-muted-foreground truncate text-right">
+            <span className={cn("text-xs truncate", isSelectionVisible ? "text-accent-foreground/85" : "text-muted-foreground")}>{modifiedLabel}</span>
+            <span className={cn("text-xs truncate text-right", isSelectionVisible ? "text-accent-foreground/85" : "text-muted-foreground")}>
                 {isNavDir ? '--' : sizeLabel}
             </span>
-            <span className="text-xs text-muted-foreground truncate capitalize text-right">
+            <span className={cn("text-xs truncate capitalize text-right", isSelectionVisible ? "text-accent-foreground/85" : "text-muted-foreground")}>
                 {isSymlinkToDirectory ? 'link → folder' : entry.type === 'directory' ? 'folder' : entry.type === 'symlink' ? 'link' : entry.name.split('.').pop()?.toLowerCase() || 'file'}
             </span>
         </div>
@@ -107,6 +132,8 @@ const SftpFileRowInner: React.FC<SftpFileRowProps> = ({
 const areEqual = (prev: SftpFileRowProps, next: SftpFileRowProps): boolean => {
     if (prev.index !== next.index) return false;
     if (prev.isSelected !== next.isSelected) return false;
+    // Only re-render for showSelectionHighlight changes when the row is actually selected
+    if (prev.isSelected && prev.showSelectionHighlight !== next.showSelectionHighlight) return false;
     if (prev.isDragOver !== next.isDragOver) return false;
     if (prev.columnWidths.name !== next.columnWidths.name) return false;
     if (prev.columnWidths.modified !== next.columnWidths.modified) return false;

components/sftp/SftpOverlays.tsx

@@ -2,6 +2,7 @@ import React from "react";
 import type { Host, SftpFileEntry } from "../../types";
 import type { FileOpenerType, SystemAppInfo } from "../../lib/sftpFileUtils";
 import type { useSftpState } from "../../application/state/useSftpState";
+import type { HotkeyScheme, KeyBinding } from "../../domain/models";
 import FileOpenerDialog from "../FileOpenerDialog";
 import TextEditorModal from "../TextEditorModal";
 import { SftpConflictDialog, SftpHostPicker, SftpPermissionsDialog } from "./index";
@@ -24,8 +25,8 @@ interface SftpOverlaysProps {
   setHostSearchRight: (value: string) => void;
   handleHostSelectLeft: (host: Host | "local") => void;
   handleHostSelectRight: (host: Host | "local") => void;
-  permissionsState: { file: SftpFileEntry; side: "left" | "right" } | null;
-  setPermissionsState: (state: { file: SftpFileEntry; side: "left" | "right" } | null) => void;
+  permissionsState: { file: SftpFileEntry; side: "left" | "right"; fullPath: string } | null;
+  setPermissionsState: (state: { file: SftpFileEntry; side: "left" | "right"; fullPath: string } | null) => void;
   showTextEditor: boolean;
   setShowTextEditor: (open: boolean) => void;
   textEditorTarget: { file: SftpFileEntry; side: "left" | "right"; fullPath: string } | null;
@@ -35,6 +36,8 @@ interface SftpOverlaysProps {
   handleSaveTextFile: (content: string) => Promise<void>;
   editorWordWrap: boolean;
   setEditorWordWrap: (enabled: boolean) => void;
+  hotkeyScheme: HotkeyScheme;
+  keyBindings: KeyBinding[];
   showFileOpenerDialog: boolean;
   setShowFileOpenerDialog: (open: boolean) => void;
   fileOpenerTarget: { file: SftpFileEntry; side: "left" | "right"; fullPath: string } | null;
@@ -43,7 +46,7 @@ interface SftpOverlaysProps {
   handleSelectSystemApp: (systemApp: { path: string; name: string }) => void;
 }
 
-export const SftpOverlays: React.FC<SftpOverlaysProps> = ({
+export const SftpOverlays: React.FC<SftpOverlaysProps> = React.memo(({
   hosts,
   sftp,
   visibleTransfers,
@@ -69,6 +72,8 @@ export const SftpOverlays: React.FC<SftpOverlaysProps> = ({
   handleSaveTextFile,
   editorWordWrap,
   setEditorWordWrap,
+  hotkeyScheme,
+  keyBindings,
   showFileOpenerDialog,
   setShowFileOpenerDialog,
   fileOpenerTarget,
@@ -101,7 +106,7 @@ export const SftpOverlays: React.FC<SftpOverlaysProps> = ({
       />
 
       {showTransferQueue && (
-        <SftpTransferQueue sftp={sftp} visibleTransfers={visibleTransfers} />
+        <SftpTransferQueue sftp={sftp} visibleTransfers={visibleTransfers} allTransfers={sftp.transfers} />
       )}
 
       <SftpConflictDialog
@@ -114,17 +119,11 @@ export const SftpOverlays: React.FC<SftpOverlaysProps> = ({
         open={!!permissionsState}
         onOpenChange={(open) => !open && setPermissionsState(null)}
         file={permissionsState?.file ?? null}
-        onSave={(file, permissions) => {
+        onSave={(_file, permissions) => {
           if (permissionsState) {
-            const fullPath = sftp.joinPath(
-              permissionsState.side === "left"
-                ? sftp.leftPane.connection?.currentPath || ""
-                : sftp.rightPane.connection?.currentPath || "",
-              file.name,
-            );
             sftp.changePermissions(
               permissionsState.side,
-              fullPath,
+              permissionsState.fullPath,
               permissions,
             );
           }
@@ -145,6 +144,8 @@ export const SftpOverlays: React.FC<SftpOverlaysProps> = ({
         onSave={handleSaveTextFile}
         editorWordWrap={editorWordWrap}
         onToggleWordWrap={() => setEditorWordWrap(!editorWordWrap)}
+        hotkeyScheme={hotkeyScheme}
+        keyBindings={keyBindings}
       />
 
       {/* File Opener Dialog */}
@@ -160,4 +161,4 @@ export const SftpOverlays: React.FC<SftpOverlaysProps> = ({
       />
     </>
   );
-};
+});

components/sftp/SftpPaneDialogs.tsx

@@ -11,11 +11,14 @@ import {
 } from "../ui/dialog";
 import { Input } from "../ui/input";
 import { Label } from "../ui/label";
+import { getFileName, getParentPath } from "../../application/state/sftp/utils";
 import { SftpHostPicker } from "./index";
 import type { Host } from "../../types";
 
 interface SftpPaneDialogsProps {
   t: (key: string, params?: Record<string, unknown>) => string;
+  hostLabel?: string;
+  currentPath?: string;
   // New folder
   showNewFolderDialog: boolean;
   setShowNewFolderDialog: (open: boolean) => void;
@@ -61,8 +64,15 @@ interface SftpPaneDialogsProps {
   onDisconnect: () => void;
 }
 
+const HostHint: React.FC<{ label?: string }> = ({ label }) =>
+  label ? (
+    <div className="text-xs text-muted-foreground truncate mb-1">{label}</div>
+  ) : null;
+
 export const SftpPaneDialogs: React.FC<SftpPaneDialogsProps> = ({
   t,
+  hostLabel,
+  currentPath,
   showNewFolderDialog,
   setShowNewFolderDialog,
   newFolderName,
@@ -100,12 +110,36 @@ export const SftpPaneDialogs: React.FC<SftpPaneDialogsProps> = ({
   setHostSearch,
   onConnect,
   onDisconnect,
-}) => (
+}) => {
+  const isSingleDeleteTarget = deleteTargets.length === 1;
+  const deletePath = (() => {
+    if (isSingleDeleteTarget) {
+      return deleteTargets[0];
+    }
+
+    const uniquePaths = Array.from(new Set(deleteTargets.map((target) => getParentPath(target)).filter(Boolean)));
+    if (uniquePaths.length === 1) return uniquePaths[0];
+    if (uniquePaths.length > 1) return "Multiple locations";
+    return currentPath;
+  })();
+  const showDeleteList = deleteTargets.length > 1;
+  const deleteListItems = (() => {
+    if (!showDeleteList) return [];
+
+    const uniquePaths = Array.from(new Set(deleteTargets.map((target) => getParentPath(target)).filter(Boolean)));
+    if (uniquePaths.length === 1) {
+      return deleteTargets.map((target) => getFileName(target) || target);
+    }
+    return deleteTargets;
+  })();
+
+  return (
   <>
     {/* Dialogs */}
     <Dialog open={showNewFolderDialog} onOpenChange={setShowNewFolderDialog}>
       <DialogContent className="max-w-sm">
         <DialogHeader>
+          <HostHint label={hostLabel} />
           <DialogTitle>{t("sftp.newFolder")}</DialogTitle>
         </DialogHeader>
         <div className="space-y-4">
@@ -148,6 +182,7 @@ export const SftpPaneDialogs: React.FC<SftpPaneDialogsProps> = ({
     }}>
       <DialogContent className="max-w-sm">
         <DialogHeader>
+          <HostHint label={hostLabel} />
           <DialogTitle>{t("sftp.newFile")}</DialogTitle>
         </DialogHeader>
         <div className="space-y-4">
@@ -192,6 +227,7 @@ export const SftpPaneDialogs: React.FC<SftpPaneDialogsProps> = ({
     <Dialog open={showOverwriteConfirm} onOpenChange={setShowOverwriteConfirm}>
       <DialogContent className="max-w-sm">
         <DialogHeader>
+          <HostHint label={hostLabel} />
           <DialogTitle>{t("sftp.overwrite.title")}</DialogTitle>
           <DialogDescription>
             {t("sftp.overwrite.desc", { name: overwriteTarget || "" })}
@@ -217,6 +253,7 @@ export const SftpPaneDialogs: React.FC<SftpPaneDialogsProps> = ({
     <Dialog open={showRenameDialog} onOpenChange={setShowRenameDialog}>
       <DialogContent className="max-w-sm">
         <DialogHeader>
+          <HostHint label={hostLabel} />
           <DialogTitle>{t("sftp.rename.title")}</DialogTitle>
         </DialogHeader>
         <div className="space-y-4">
@@ -258,19 +295,39 @@ export const SftpPaneDialogs: React.FC<SftpPaneDialogsProps> = ({
             {t("sftp.deleteConfirm.title", { count: deleteTargets.length })}
           </DialogTitle>
           <DialogDescription>
-            {t("sftp.deleteConfirm.desc")}
+            {t(showDeleteList ? "sftp.deleteConfirm.desc" : "sftp.deleteConfirm.descSingle")}
           </DialogDescription>
         </DialogHeader>
-        <div className="max-h-32 overflow-auto text-sm space-y-1">
-          {deleteTargets.map((name) => (
-            <div
-              key={name}
-              className="flex items-center gap-2 text-muted-foreground"
-            >
-              <Trash2 size={12} />
-              <span className="truncate">{name}</span>
+        <div className="space-y-3">
+          {hostLabel || deletePath ? (
+            <div className="text-xs text-muted-foreground space-y-1.5">
+              {hostLabel ? (
+                <div className="flex items-start gap-2">
+                  <span className="font-medium text-foreground/80 shrink-0">{t("sftp.deleteConfirm.host")}:</span>
+                  <span className="break-all">{hostLabel}</span>
+                </div>
+              ) : null}
+              {deletePath ? (
+                <div className="flex items-start gap-2">
+                  <span className="font-medium text-foreground/80 shrink-0">{t("sftp.deleteConfirm.path")}:</span>
+                  <span className="break-all">{deletePath}</span>
+                </div>
+              ) : null}
             </div>
-          ))}
+          ) : null}
+          {showDeleteList ? (
+            <div className="max-h-32 overflow-auto text-sm space-y-1">
+              {deleteListItems.map((name) => (
+                <div
+                  key={name}
+                  className="flex items-center gap-2 text-muted-foreground"
+                >
+                  <Trash2 size={12} />
+                  <span className="truncate">{name}</span>
+                </div>
+              ))}
+            </div>
+          ) : null}
         </div>
         <DialogFooter>
           <Button
@@ -310,4 +367,5 @@ export const SftpPaneDialogs: React.FC<SftpPaneDialogsProps> = ({
       }}
     />
   </>
-);
+  );
+};

components/sftp/SftpPaneFileList.tsx

@@ -1,5 +1,5 @@
-import React, { useCallback, useMemo } from "react";
-import { AlertCircle, ArrowDown, Copy, Download, Edit2, ExternalLink, FilePlus, Folder, FolderPlus, Loader2, Pencil, RefreshCw, Shield, Trash2 } from "lucide-react";
+import React, { useCallback, useEffect, useMemo, useRef, useState } from "react";
+import { ArrowDown, ArrowRight, ArrowUp, ChevronDown, ClipboardCopy, Copy, Download, Edit2, ExternalLink, FilePlus, Folder, FolderPlus, Loader2, Pencil, RefreshCw, Shield, Trash2, Unplug } from "lucide-react";
 import { Button } from "../ui/button";
 import {
   ContextMenu,
@@ -9,9 +9,12 @@ import {
   ContextMenuTrigger,
 } from "../ui/context-menu";
 import { cn } from "../../lib/utils";
+import { getParentPath, joinPath } from "../../application/state/sftp/utils";
 import type { SftpFileEntry } from "../../types";
 import type { SftpPane } from "../../application/state/sftp/types";
-import type { ColumnWidths, SortField, SortOrder } from "./utils";
+import type { SftpTransferSource } from "./SftpContext";
+import { sftpListOrderStore } from "./hooks/useSftpListOrderStore";
+import { buildSftpColumnTemplate, type ColumnWidths, type SortField, type SortOrder } from "./utils";
 import { isNavigableDirectory } from "./index";
 import { isKnownBinaryFile } from "../../lib/sftpFileUtils";
 import { SftpFileRow } from "./index";
@@ -20,6 +23,7 @@ interface SftpPaneFileListProps {
   t: (key: string, params?: Record<string, unknown>) => string;
   pane: SftpPane;
   side: "left" | "right";
+  isPaneFocused: boolean;
   columnWidths: ColumnWidths;
   sortField: SortField;
   sortOrder: SortOrder;
@@ -31,8 +35,10 @@ interface SftpPaneFileListProps {
   totalHeight: number;
   sortedDisplayFiles: SftpFileEntry[];
   isDragOverPane: boolean;
-  draggedFiles: { name: string; isDirectory: boolean; side: "left" | "right" }[] | null;
+  draggedFiles: (SftpTransferSource & { side: "left" | "right" })[] | null;
   onRefresh: () => void;
+  onNavigateTo: (path: string) => void;
+  onClearSelection: () => void;
   setShowNewFolderDialog: (open: boolean) => void;
   setShowNewFileDialog: (open: boolean) => void;
   getNextUntitledName: (existingNames: string[]) => string;
@@ -47,7 +53,8 @@ interface SftpPaneFileListProps {
   handleEntryDragOver: (entry: SftpFileEntry, e: React.DragEvent) => void;
   handleRowDragLeave: () => void;
   handleEntryDrop: (entry: SftpFileEntry, e: React.DragEvent) => void;
-  onCopyToOtherPane: (files: { name: string; isDirectory: boolean }[]) => void;
+  onCopyToOtherPane: (files: SftpTransferSource[]) => void;
+  onMoveEntriesToPath: (sourcePaths: string[], targetPath: string) => Promise<void>;
   onOpenFileWith?: (entry: SftpFileEntry) => void;
   onEditFile?: (entry: SftpFileEntry) => void;
   onDownloadFile?: (entry: SftpFileEntry) => void;
@@ -58,10 +65,51 @@ interface SftpPaneFileListProps {
   visibleRows: { entry: SftpFileEntry; index: number; top: number }[];
 }
 
-export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
+const SftpErrorWithLogs: React.FC<{
+  error: string;
+  connectionLogs: string[];
+  onRetry: () => void;
+  t: (key: string) => string;
+}> = ({ error, connectionLogs, onRetry, t }) => {
+  const [showLogs, setShowLogs] = useState(connectionLogs.length > 0);
+  return (
+    <div className="flex flex-col items-center justify-center h-full gap-3 text-muted-foreground">
+      <Unplug size={28} className="text-destructive/70" />
+      <span className="text-xs text-center px-6 max-w-xs leading-relaxed">{t(error)}</span>
+      <div className="flex items-center gap-2">
+        <Button variant="outline" size="sm" className="h-7 text-xs" onClick={onRetry}>
+          {t("sftp.retry")}
+        </Button>
+        {connectionLogs.length > 0 && (
+          <Button
+            variant="ghost"
+            size="sm"
+            className="h-7 text-xs text-muted-foreground"
+            onClick={() => setShowLogs(!showLogs)}
+          >
+            <ChevronDown size={14} className={`mr-1 transition-transform ${showLogs ? 'rotate-180' : ''}`} />
+            {showLogs ? "Hide logs" : "Show logs"}
+          </Button>
+        )}
+      </div>
+      {showLogs && connectionLogs.length > 0 && (
+        <div className="w-full max-w-sm mt-1 p-2 rounded-md bg-secondary/50 border border-border/60 space-y-0.5 max-h-40 overflow-y-auto">
+          {connectionLogs.map((log, i) => (
+            <div key={i} className="text-[11px] text-muted-foreground truncate font-mono">
+              {log}
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+};
+
+export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = React.memo(({
   t,
   pane,
   side,
+  isPaneFocused,
   columnWidths,
   sortField,
   sortOrder,
@@ -75,6 +123,8 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
   isDragOverPane,
   draggedFiles,
   onRefresh,
+  onNavigateTo,
+  onClearSelection,
   setShowNewFolderDialog,
   setShowNewFileDialog,
   getNextUntitledName,
@@ -89,6 +139,7 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
   handleRowDragLeave,
   handleEntryDrop,
   onCopyToOtherPane,
+  onMoveEntriesToPath,
   onOpenFileWith,
   onEditFile,
   onDownloadFile,
@@ -106,6 +157,39 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
     return map;
   }, [sortedDisplayFiles]);
 
+  // Push sorted file names into the list order store for keyboard navigation
+  useEffect(() => {
+    const names = sortedDisplayFiles
+      .filter((f) => f.name !== "..")
+      .map((f) => f.name);
+    sftpListOrderStore.setItems(pane.id, names);
+    return () => sftpListOrderStore.clearPane(pane.id);
+  }, [sortedDisplayFiles, pane.id]);
+
+  useEffect(() => {
+    if (pane.selectedFiles.size !== 1) return;
+    const selectedName = Array.from(pane.selectedFiles)[0];
+    if (!selectedName) return;
+
+    const container = fileListRef.current;
+    if (!container) return;
+
+    const row = Array.from(container.querySelectorAll<HTMLElement>('[data-sftp-row="true"]'))
+      .find((element) => element.dataset.entryName === selectedName);
+    row?.scrollIntoView({ block: "nearest" });
+  }, [fileListRef, pane.selectedFiles]);
+
+  // Use refs for frequently-changing values in context-menu actions
+  const selectedFilesRef = useRef(pane.selectedFiles);
+  selectedFilesRef.current = pane.selectedFiles;
+
+  const handleBackgroundClick = useCallback((e: React.MouseEvent<HTMLDivElement>) => {
+    const target = e.target as HTMLElement;
+    if (target.closest('[data-sftp-row="true"]')) return;
+    if (pane.selectedFiles.size === 0) return;
+    onClearSelection();
+  }, [onClearSelection, pane.selectedFiles.size]);
+
   const renderRow = useCallback(
     (entry: SftpFileEntry, index: number) => (
       <ContextMenu>
@@ -114,6 +198,7 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
             entry={entry}
             index={index}
             isSelected={pane.selectedFiles.has(entry.name)}
+            showSelectionHighlight={isPaneFocused}
             isDragOver={dragOverEntry === entry.name}
             columnWidths={columnWidths}
             onSelect={handleRowSelect}
@@ -139,6 +224,11 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
                 </>
               )}
             </ContextMenuItem>
+            {isNavigableDirectory(entry) && (
+              <ContextMenuItem onClick={() => onNavigateTo(joinPath(pane.connection.currentPath, entry.name))}>
+                <ArrowRight size={14} className="mr-2" /> {t("sftp.context.navigateTo")}
+              </ContextMenuItem>
+            )}
             {!isNavigableDirectory(entry) && onOpenFileWith && (
               <ContextMenuItem onClick={() => onOpenFileWith(entry)}>
                 <ExternalLink size={14} className="mr-2" />{" "}
@@ -161,8 +251,9 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
             <ContextMenuSeparator />
             <ContextMenuItem
               onClick={() => {
-                const files = pane.selectedFiles.has(entry.name)
-                  ? Array.from(pane.selectedFiles)
+                const currentSelected = selectedFilesRef.current;
+                const files = currentSelected.has(entry.name)
+                  ? Array.from(currentSelected)
                   : [entry.name];
                 const fileData = files.map((name) => {
                   const fileName = String(name);
@@ -170,6 +261,8 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
                   return {
                     name: fileName,
                     isDirectory: file ? isNavigableDirectory(file) : false,
+                    sourceConnectionId: pane.connection?.id,
+                    sourcePath: pane.connection?.currentPath,
                   };
                 });
                 onCopyToOtherPane(fileData);
@@ -178,8 +271,36 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
               <Copy size={14} className="mr-2" />{" "}
               {t("sftp.context.copyToOtherPane")}
             </ContextMenuItem>
+            <ContextMenuItem
+              onClick={() => {
+                navigator.clipboard.writeText(joinPath(pane.connection.currentPath, entry.name));
+              }}
+            >
+              <ClipboardCopy size={14} className="mr-2" />{" "}
+              {t("sftp.context.copyPath")}
+            </ContextMenuItem>
             <ContextMenuSeparator />
-            <ContextMenuItem onClick={() => openRenameDialog(entry.name)}>
+            {(() => {
+              const sourceParent = getParentPath(joinPath(pane.connection?.currentPath ?? "", entry.name));
+              const targetParent = getParentPath(sourceParent);
+              if (sourceParent === targetParent) return null;
+
+              return (
+                <ContextMenuItem
+                  onClick={() => {
+                    const currentSelected = selectedFilesRef.current;
+                    const sourcePaths = currentSelected.has(entry.name)
+                      ? Array.from(currentSelected as Set<string>).map((n) => joinPath(pane.connection?.currentPath ?? "", n))
+                      : [joinPath(pane.connection?.currentPath ?? "", entry.name)];
+                    void onMoveEntriesToPath(sourcePaths, targetParent);
+                  }}
+                >
+                  <ArrowUp size={14} className="mr-2" />{" "}
+                  {t("sftp.context.moveToParent")}
+                </ContextMenuItem>
+              );
+            })()}
+            <ContextMenuItem onClick={() => openRenameDialog(joinPath(pane.connection?.currentPath ?? "", entry.name))}>
               <Pencil size={14} className="mr-2" /> {t("common.rename")}
             </ContextMenuItem>
             {onEditPermissions && pane.connection && !pane.connection.isLocal && (
@@ -191,9 +312,10 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
             <ContextMenuItem
               className="text-destructive"
               onClick={() => {
-                const files = pane.selectedFiles.has(entry.name)
-                  ? Array.from(pane.selectedFiles)
-                  : [entry.name];
+                const currentSelected = selectedFilesRef.current;
+                const files = currentSelected.has(entry.name)
+                  ? Array.from(currentSelected as Set<string>).map((n) => joinPath(pane.connection?.currentPath ?? "", n))
+                  : [joinPath(pane.connection?.currentPath ?? "", entry.name)];
                 openDeleteConfirm(files);
               }}
             >
@@ -215,7 +337,6 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
     ),
     [
       columnWidths,
-      dragOverEntry,
       filesByName,
       handleEntryDragOver,
       handleEntryDrop,
@@ -223,11 +344,15 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
       handleRowDragLeave,
       handleRowOpen,
       handleRowSelect,
+      dragOverEntry,
+      isPaneFocused,
       onCopyToOtherPane,
+      onMoveEntriesToPath,
       onDownloadFile,
       onDragEnd,
       onEditFile,
       onEditPermissions,
+      onNavigateTo,
       onOpenFileWith,
       onRefresh,
       openDeleteConfirm,
@@ -257,7 +382,13 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
             {renderRow(entry, index)}
           </React.Fragment>
         )),
-    [renderRow, rowHeight, shouldVirtualize, sortedDisplayFiles, visibleRows],
+    [
+      renderRow,
+      rowHeight,
+      shouldVirtualize,
+      sortedDisplayFiles,
+      visibleRows,
+    ],
   );
 
   return (
@@ -267,16 +398,16 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
       className="text-[11px] uppercase tracking-wide text-muted-foreground px-4 py-2 border-b border-border/40 bg-secondary/10 select-none"
       style={{
         display: "grid",
-        gridTemplateColumns: `${columnWidths.name}% ${columnWidths.modified}% ${columnWidths.size}% ${columnWidths.type}%`,
+        gridTemplateColumns: buildSftpColumnTemplate(columnWidths),
       }}
     >
       <div
-        className="flex items-center gap-1 cursor-pointer hover:text-foreground relative pr-2"
+        className="flex min-w-0 items-center gap-1 cursor-pointer hover:text-foreground relative pr-2 overflow-hidden"
         onClick={() => handleSort("name")}
       >
-        <span>{t("sftp.columns.name")}</span>
+        <span className="truncate whitespace-nowrap">{t("sftp.columns.name")}</span>
         {sortField === "name" && (
-          <span className="text-primary">
+          <span className="shrink-0 text-primary">
             {sortOrder === "asc" ? "↑" : "↓"}
           </span>
         )}
@@ -286,12 +417,12 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
         />
       </div>
       <div
-        className="flex items-center gap-1 cursor-pointer hover:text-foreground relative pr-2"
+        className="flex min-w-0 items-center gap-1 cursor-pointer hover:text-foreground relative pr-2 overflow-hidden"
         onClick={() => handleSort("modified")}
       >
-        <span>{t("sftp.columns.modified")}</span>
+        <span className="truncate whitespace-nowrap">{t("sftp.columns.modified")}</span>
         {sortField === "modified" && (
-          <span className="text-primary">
+          <span className="shrink-0 text-primary">
             {sortOrder === "asc" ? "↑" : "↓"}
           </span>
         )}
@@ -301,30 +432,30 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
         />
       </div>
       <div
-        className="flex items-center gap-1 cursor-pointer hover:text-foreground relative pr-2 justify-end"
+        className="flex min-w-0 items-center gap-1 cursor-pointer hover:text-foreground relative pr-2 justify-end overflow-hidden"
         onClick={() => handleSort("size")}
       >
         {sortField === "size" && (
-          <span className="text-primary">
+          <span className="shrink-0 text-primary">
             {sortOrder === "asc" ? "↑" : "↓"}
           </span>
         )}
-        <span>{t("sftp.columns.size")}</span>
+        <span className="truncate whitespace-nowrap">{t("sftp.columns.size")}</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 justify-end"
+        className="flex min-w-0 items-center gap-1 cursor-pointer hover:text-foreground justify-end overflow-hidden"
         onClick={() => handleSort("type")}
       >
         {sortField === "type" && (
-          <span className="text-primary">
+          <span className="shrink-0 text-primary">
             {sortOrder === "asc" ? "↑" : "↓"}
           </span>
         )}
-        <span>{t("sftp.columns.kind")}</span>
+        <span className="truncate whitespace-nowrap">{t("sftp.columns.kind")}</span>
       </div>
     </div>
 
@@ -337,20 +468,29 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
             "flex-1 min-h-0 overflow-y-auto relative",
             isDragOverPane && "ring-2 ring-primary/30 ring-inset",
           )}
+          onClick={handleBackgroundClick}
           onScroll={handleFileListScroll}
         >
           {pane.loading && sortedDisplayFiles.length === 0 ? (
-            <div className="flex items-center justify-center h-full">
+            <div className="flex flex-col items-center justify-center h-full gap-2">
               <Loader2 size={24} className="animate-spin text-muted-foreground" />
+              {pane.connectionLogs.length > 0 && (
+                <div className="w-full max-w-sm mt-2 space-y-0.5 px-4">
+                  {pane.connectionLogs.map((log, i) => (
+                    <div key={i} className="text-[11px] text-muted-foreground truncate">
+                      {log}
+                    </div>
+                  ))}
+                </div>
+              )}
             </div>
           ) : pane.error && !pane.reconnecting ? (
-            <div className="flex flex-col items-center justify-center h-full gap-2 text-destructive">
-              <AlertCircle size={24} />
-              <span className="text-sm">{t(pane.error)}</span>
-              <Button variant="outline" size="sm" onClick={onRefresh}>
-                {t("sftp.retry")}
-              </Button>
-            </div>
+            <SftpErrorWithLogs
+              error={pane.error}
+              connectionLogs={pane.connectionLogs}
+              onRetry={onRefresh}
+              t={t}
+            />
           ) : sortedDisplayFiles.length === 0 ? (
             <div className="flex flex-col items-center justify-center h-full text-muted-foreground">
               <Folder size={32} className="mb-2 opacity-50" />
@@ -400,7 +540,7 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
     <div className="h-9 shrink-0 px-4 flex items-center justify-between text-[11px] text-muted-foreground border-t border-border/40 bg-secondary/30">
       <span>
         {t("sftp.itemsCount", {
-          count: sortedDisplayFiles.filter((f) => f.name !== "..").length,
+          count: sortedDisplayFiles.length - (sortedDisplayFiles[0]?.name === ".." ? 1 : 0),
         })}
         {pane.selectedFiles.size > 0 &&
           ` - ${t("sftp.selectedCount", { count: pane.selectedFiles.size })}`}
@@ -410,10 +550,19 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
       </span>
     </div>
 
-    {/* Loading overlay - covers entire pane when navigating directories */}
+    {/* Loading overlay - covers entire pane when navigating or reconnecting */}
     {pane.loading && sortedDisplayFiles.length > 0 && !pane.reconnecting && (
-      <div className="absolute inset-0 flex items-center justify-center bg-background/40 backdrop-blur-[1px] z-10">
+      <div className="absolute inset-0 flex flex-col items-center justify-center bg-background/40 backdrop-blur-[1px] z-10">
         <Loader2 size={24} className="animate-spin text-muted-foreground" />
+        {pane.connectionLogs.length > 0 && (
+          <div className="w-full max-w-sm mt-2 space-y-0.5 px-4">
+            {pane.connectionLogs.map((log, i) => (
+              <div key={i} className="text-[11px] text-muted-foreground truncate">
+                {log}
+              </div>
+            ))}
+          </div>
+        )}
       </div>
     )}
 
@@ -431,4 +580,4 @@ export const SftpPaneFileList: React.FC<SftpPaneFileListProps> = ({
     )}
   </>
 );
-};
+});

components/sftp/SftpPaneToolbar.tsx

@@ -1,5 +1,5 @@
 import React, { useCallback, useEffect, useRef, useState } from "react";
-import { Bookmark, Check, Eye, EyeOff, FilePlus, Folder, FolderPlus, Home, Languages, MoreHorizontal, RefreshCw, Search, TerminalSquare, Trash2, X } from "lucide-react";
+import { Bookmark, Check, Eye, EyeOff, FilePlus, Folder, FolderPlus, Globe, Home, Languages, List, ListTree, MoreHorizontal, RefreshCw, Search, TerminalSquare, Trash2, X } from "lucide-react";
 import { Button } from "../ui/button";
 import { Input } from "../ui/input";
 import { Popover, PopoverClose, PopoverContent, PopoverTrigger } from "../ui/popover";
@@ -46,11 +46,15 @@ interface SftpPaneToolbarProps {
   bookmarks: SftpBookmark[];
   isCurrentPathBookmarked: boolean;
   onToggleBookmark: () => void;
+  onAddGlobalBookmark: (path: string) => void;
+  isCurrentPathGlobalBookmarked: boolean;
   onNavigateToBookmark: (path: string) => void;
   onDeleteBookmark: (id: string) => void;
   showHiddenFiles: boolean;
   onToggleShowHiddenFiles?: () => void;
   onGoToTerminalCwd?: () => void;
+  viewMode: 'list' | 'tree';
+  onSetViewMode: (mode: 'list' | 'tree') => void;
 }
 
 // Prioritize breadcrumb path display. 6 action buttons need ~156px,
@@ -58,7 +62,7 @@ interface SftpPaneToolbarProps {
 // always gets at least ~200px of space.
 const COLLAPSE_WIDTH = 400;
 
-export const SftpPaneToolbar: React.FC<SftpPaneToolbarProps> = ({
+export const SftpPaneToolbar: React.FC<SftpPaneToolbarProps> = React.memo(({
   t,
   pane,
   onNavigateTo,
@@ -92,14 +96,29 @@ export const SftpPaneToolbar: React.FC<SftpPaneToolbarProps> = ({
   bookmarks,
   isCurrentPathBookmarked,
   onToggleBookmark,
+  onAddGlobalBookmark,
+  isCurrentPathGlobalBookmarked,
   onNavigateToBookmark,
   onDeleteBookmark,
   showHiddenFiles,
   onToggleShowHiddenFiles,
   onGoToTerminalCwd,
+  viewMode,
+  onSetViewMode,
 }) => {
   const outerRef = useRef<HTMLDivElement>(null);
   const [collapsed, setCollapsed] = useState(false);
+  const [displayPath, setDisplayPath] = useState(pane.connection?.currentPath ?? "");
+  const prevDisplayConnectionIdRef = useRef(pane.connection?.id);
+
+  useEffect(() => {
+    const connectionChanged = pane.connection?.id !== prevDisplayConnectionIdRef.current;
+    prevDisplayConnectionIdRef.current = pane.connection?.id;
+    // Sync immediately on connection change; otherwise defer until loading completes
+    if (connectionChanged || !pane.loading) {
+      setDisplayPath(pane.connection?.currentPath ?? "");
+    }
+  }, [pane.connection?.currentPath, pane.connection?.id, pane.loading]);
 
   // Observe the overall toolbar width to decide whether to collapse action buttons
   useEffect(() => {
@@ -153,6 +172,36 @@ export const SftpPaneToolbar: React.FC<SftpPaneToolbarProps> = ({
           <TooltipContent>{t("sftp.goToTerminalCwd")}</TooltipContent>
         </Tooltip>
       )}
+      <Tooltip>
+        <TooltipTrigger asChild>
+          <Button
+            variant="ghost"
+            size="icon"
+            className={cn("h-6 w-6", viewMode === 'list' && "bg-secondary text-foreground")}
+            aria-pressed={viewMode === 'list'}
+            aria-label={t('sftp.viewMode.list')}
+            onClick={() => onSetViewMode('list')}
+          >
+            <List size={14} />
+          </Button>
+        </TooltipTrigger>
+        <TooltipContent>{t('sftp.viewMode.list')}</TooltipContent>
+      </Tooltip>
+      <Tooltip>
+        <TooltipTrigger asChild>
+          <Button
+            variant="ghost"
+            size="icon"
+            className={cn("h-6 w-6", viewMode === 'tree' && "bg-secondary text-foreground")}
+            aria-pressed={viewMode === 'tree'}
+            aria-label={t('sftp.viewMode.tree')}
+            onClick={() => onSetViewMode('tree')}
+          >
+            <ListTree size={14} />
+          </Button>
+        </TooltipTrigger>
+        <TooltipContent>{t('sftp.viewMode.tree')}</TooltipContent>
+      </Tooltip>
       <Tooltip>
         <TooltipTrigger asChild>
           <Button
@@ -275,6 +324,32 @@ export const SftpPaneToolbar: React.FC<SftpPaneToolbarProps> = ({
   // Overflow dropdown menu items (same collapsible actions as menu items)
   const overflowMenuItems = (
     <div className="flex flex-col min-w-[140px]">
+      <div role="radiogroup" aria-label={t('sftp.viewMode.label')}>
+        <button
+          className={cn(
+            "flex items-center gap-2 px-2 py-1.5 text-xs rounded-sm hover:bg-secondary transition-colors w-full text-left",
+            viewMode === 'list' && "text-primary"
+          )}
+          role="radio"
+          aria-checked={viewMode === 'list'}
+          onClick={() => onSetViewMode('list')}
+        >
+          <List size={14} className="shrink-0" />
+          {t('sftp.viewMode.list')}
+        </button>
+        <button
+          className={cn(
+            "flex items-center gap-2 px-2 py-1.5 text-xs rounded-sm hover:bg-secondary transition-colors w-full text-left",
+            viewMode === 'tree' && "text-primary"
+          )}
+          role="radio"
+          aria-checked={viewMode === 'tree'}
+          onClick={() => onSetViewMode('tree')}
+        >
+          <ListTree size={14} className="shrink-0" />
+          {t('sftp.viewMode.tree')}
+        </button>
+      </div>
       {isRemote && (
         <Popover>
           <PopoverTrigger asChild>
@@ -406,7 +481,7 @@ export const SftpPaneToolbar: React.FC<SftpPaneToolbarProps> = ({
             title={t("sftp.path.doubleClickToEdit")}
           >
             <SftpBreadcrumb
-              path={pane.connection.currentPath}
+              path={displayPath}
               onNavigate={onNavigateTo}
               onHome={() =>
                 pane.connection?.homeDir &&
@@ -440,16 +515,31 @@ export const SftpPaneToolbar: React.FC<SftpPaneToolbarProps> = ({
               <TooltipContent>{isCurrentPathBookmarked ? t("sftp.bookmark.remove") : t("sftp.bookmark.add")}</TooltipContent>
             </Tooltip>
             <PopoverContent className="w-64 p-0" align="start">
-              <div className="p-2 border-b border-border/40">
+              <div className="p-2 border-b border-border/40 flex gap-1">
                 <Button
                   variant={isCurrentPathBookmarked ? "secondary" : "ghost"}
                   size="sm"
-                  className="w-full justify-start text-xs h-7"
+                  className="flex-1 justify-start text-xs h-7"
                   onClick={onToggleBookmark}
                 >
                   <Bookmark size={12} fill={isCurrentPathBookmarked ? "currentColor" : "none"} className={cn("mr-2", isCurrentPathBookmarked && "text-yellow-500")} />
                   {isCurrentPathBookmarked ? t("sftp.bookmark.remove") : t("sftp.bookmark.add")}
                 </Button>
+                {pane.connection?.currentPath && !isCurrentPathGlobalBookmarked && (
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <Button
+                        variant="ghost"
+                        size="sm"
+                        className="text-xs h-7 px-2 shrink-0"
+                        onClick={() => pane.connection?.currentPath && onAddGlobalBookmark(pane.connection.currentPath)}
+                      >
+                        {t("sftp.bookmark.addGlobal")}
+                      </Button>
+                    </TooltipTrigger>
+                    <TooltipContent>{t("sftp.bookmark.addGlobalTooltip")}</TooltipContent>
+                  </Tooltip>
+                )}
               </div>
               {bookmarks.length > 0 ? (
                 <div className="max-h-48 overflow-auto py-1">
@@ -458,6 +548,9 @@ export const SftpPaneToolbar: React.FC<SftpPaneToolbarProps> = ({
                       key={bm.id}
                       className="flex items-center gap-1 px-2 py-1 hover:bg-secondary/60 group"
                     >
+                      {bm.global && (
+                        <Globe size={10} className="shrink-0 text-primary" />
+                      )}
                       <button
                         type="button"
                         className="flex-1 text-left text-xs truncate font-mono"
@@ -578,4 +671,4 @@ export const SftpPaneToolbar: React.FC<SftpPaneToolbarProps> = ({
       )}
     </TooltipProvider>
   );
-};
+});

components/sftp/SftpPaneView.tsx

@@ -7,6 +7,7 @@ import { SftpPaneDialogs } from "./SftpPaneDialogs";
 import { SftpPaneEmptyState } from "./SftpPaneEmptyState";
 import { SftpPaneFileList } from "./SftpPaneFileList";
 import { SftpPaneToolbar } from "./SftpPaneToolbar";
+import { SftpPaneTreeView } from "./SftpPaneTreeView";
 import {
   useActiveTabId,
   useSftpDrag,
@@ -15,6 +16,7 @@ import {
   useSftpUpdateHosts,
 } from "./index";
 import type { SftpPane } from "../../application/state/sftp/types";
+import { joinPath } from "../../application/state/sftp/utils";
 import type { Host } from "../../domain/models";
 import { useSftpPaneDialogs } from "./hooks/useSftpPaneDialogs";
 import { useSftpPaneDragAndSelect } from "./hooks/useSftpPaneDragAndSelect";
@@ -25,6 +27,16 @@ import { useSftpPaneVirtualList } from "./hooks/useSftpPaneVirtualList";
 import { useSftpDialogActionHandler } from "./hooks/useSftpDialogAction";
 import { useSftpBookmarks } from "./hooks/useSftpBookmarks";
 import { useLocalSftpBookmarks } from "./hooks/useLocalSftpBookmarks";
+import { useGlobalSftpBookmarks } from "./hooks/useGlobalSftpBookmarks";
+import { useSftpHostViewMode } from "./hooks/useSftpHostViewMode";
+import { sftpListOrderStore } from "./hooks/useSftpListOrderStore";
+import { sftpTreeSelectionStore } from "./hooks/useSftpTreeSelectionStore";
+
+interface TreeReloadRequest {
+  token: number;
+  paths?: string[];
+  full?: boolean;
+}
 
 interface SftpPaneWrapperProps {
   side: "left" | "right";
@@ -55,31 +67,66 @@ SftpPaneWrapper.displayName = "SftpPaneWrapper";
 interface SftpPaneViewProps {
   side: "left" | "right";
   pane: SftpPane;
+  dialogActionScopeId: string;
+  isPaneFocused: boolean;
+  sftpDefaultViewMode: 'list' | 'tree';
   showHeader?: boolean;
   showEmptyHeader?: boolean;
   onToggleShowHiddenFiles?: () => void;
   onGoToTerminalCwd?: () => void;
+  /** When true, treat this pane as always active (used by SftpSidePanel which manages visibility itself) */
+  forceActive?: boolean;
 }
 
 const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
   side,
   pane,
+  dialogActionScopeId,
+  isPaneFocused,
+  sftpDefaultViewMode,
   showHeader = true,
   showEmptyHeader = true,
   onToggleShowHiddenFiles,
   onGoToTerminalCwd,
+  forceActive,
 }) => {
-  const isActive = true;
+  const activeTabId = useActiveTabId(side);
+  const isActive = forceActive || (activeTabId ? pane.id === activeTabId : true);
 
   const callbacks = useSftpPaneCallbacks(side);
   const { draggedFiles, onDragStart, onDragEnd } = useSftpDrag();
   const hosts = useSftpHosts();
 
   const { t } = useI18n();
+  const hostId = pane.connection?.hostId;
+  const { hostViewMode, setHostViewMode: saveHostViewMode } = useSftpHostViewMode(hostId);
   const [, startTransition] = useTransition();
   const [showFilterBar, setShowFilterBar] = useState(false);
+  const initialViewMode = hostViewMode ?? sftpDefaultViewMode ?? 'list';
+  const [viewMode, setViewMode] = useState<'list' | 'tree'>(initialViewMode);
+  const [treeReloadRequest, setTreeReloadRequest] = useState<TreeReloadRequest>({ token: 0, full: true });
+  // Lazy-mount: only render the tree component once tree mode has been activated
+  const [treeEverMounted, setTreeEverMounted] = useState(initialViewMode === 'tree');
+  useEffect(() => {
+    if (viewMode === 'tree' && !treeEverMounted) setTreeEverMounted(true);
+  }, [viewMode, treeEverMounted]);
   const filterInputRef = useRef<HTMLInputElement>(null);
 
+  const requestTreeReload = useCallback((paths?: string[], full = false) => {
+    setTreeReloadRequest((prev) => ({
+      token: prev.token + 1,
+      paths,
+      full,
+    }));
+  }, []);
+
+  const requestNestedTreeReload = useCallback((paths?: string[]) => {
+    const targets = Array.from(new Set((paths ?? []).filter(Boolean)));
+    if (targets.length > 0) {
+      requestTreeReload(targets);
+    }
+  }, [requestTreeReload]);
+
   useRenderTracker(`SftpPaneView[${side}]`, {
     side,
     paneId: pane.id,
@@ -109,18 +156,43 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
   const localBookmarks = useLocalSftpBookmarks({
     currentPath: pane.connection?.currentPath,
   });
-  const {
-    bookmarks,
-    isCurrentPathBookmarked,
-    toggleBookmark,
-    deleteBookmark,
-  } = pane.connection?.isLocal ? localBookmarks : remoteBookmarks;
+  const globalBookmarks = useGlobalSftpBookmarks({
+    currentPath: pane.connection?.currentPath,
+  });
+  const hostBookmarks = pane.connection?.isLocal ? localBookmarks : remoteBookmarks;
+  const mergedBookmarks = useMemo(
+    () => [...globalBookmarks.bookmarks.map((b) => ({ ...b, global: true as const })), ...hostBookmarks.bookmarks],
+    [hostBookmarks.bookmarks, globalBookmarks.bookmarks],
+  );
+  const isCurrentPathBookmarked = hostBookmarks.isCurrentPathBookmarked || globalBookmarks.isCurrentPathBookmarked;
+  const toggleBookmark = useCallback(() => {
+    if (globalBookmarks.isCurrentPathBookmarked && !hostBookmarks.isCurrentPathBookmarked) {
+      const currentPath = pane.connection?.currentPath;
+      if (currentPath) {
+        const bm = globalBookmarks.bookmarks.find((b) => b.path === currentPath);
+        if (bm) globalBookmarks.deleteBookmark(bm.id);
+      }
+    } else {
+      hostBookmarks.toggleBookmark();
+    }
+  }, [hostBookmarks, globalBookmarks, pane.connection?.currentPath]);
+  const deleteBookmark = useCallback(
+    (id: string) => {
+      if (id.startsWith("gbm-")) {
+        globalBookmarks.deleteBookmark(id);
+      } else {
+        hostBookmarks.deleteBookmark(id);
+      }
+    },
+    [hostBookmarks, globalBookmarks],
+  );
 
-  const { filteredFiles, sortedDisplayFiles } = useSftpPaneFiles({
+  const { sortedDisplayFiles } = useSftpPaneFiles({
     files: pane.files,
     filter: pane.filter,
     connection: pane.connection,
     showHiddenFiles: pane.showHiddenFiles,
+    enableListView: viewMode === 'list',
     sortField,
     sortOrder,
   });
@@ -141,7 +213,8 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
     handlePathSubmit,
   } = useSftpPanePath({
     connection: pane.connection,
-    filteredFiles,
+    files: pane.files,
+    showHiddenFiles: pane.showHiddenFiles,
     onNavigateTo: callbacks.onNavigateTo,
   });
   const {
@@ -179,6 +252,8 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
     handleConfirmOverwrite,
     handleRename,
     handleDelete,
+    openNewFolderDialogAtPath,
+    openNewFileDialogAtPath,
     openRenameDialog,
     openDeleteConfirm,
     getNextUntitledName,
@@ -186,11 +261,25 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
     t,
     pane,
     onCreateDirectory: callbacks.onCreateDirectory,
+    onCreateDirectoryAtPath: callbacks.onCreateDirectoryAtPath,
     onCreateFile: callbacks.onCreateFile,
-    onRenameFile: callbacks.onRenameFile,
-    onDeleteFiles: callbacks.onDeleteFiles,
+    onCreateFileAtPath: callbacks.onCreateFileAtPath,
+    onRenameFileAtPath: callbacks.onRenameFileAtPath,
+    onDeleteFilesAtPath: callbacks.onDeleteFilesAtPath,
     onClearSelection: callbacks.onClearSelection,
+    onMutateSuccess: (paths?: string[]) => requestNestedTreeReload(paths),
   });
+  const handleUploadExternalFiles = useCallback(async (dataTransfer: DataTransfer, targetPath?: string) => {
+    await callbacks.onUploadExternalFiles?.(dataTransfer, targetPath);
+    const affectedPath = targetPath ?? pane.connection?.currentPath;
+    if (affectedPath && affectedPath !== pane.connection?.currentPath) {
+      requestTreeReload([affectedPath]);
+    }
+  }, [callbacks, pane.connection?.currentPath, requestTreeReload]);
+
+  const handleMoveEntriesToPath = useCallback(async (sourcePaths: string[], targetPath: string) => {
+    await callbacks.onMoveEntriesToPath(sourcePaths, targetPath);
+  }, [callbacks]);
   const {
     dragOverEntry,
     isDragOverPane,
@@ -211,7 +300,8 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
     draggedFiles,
     onDragStart,
     onReceiveFromOtherPane: callbacks.onReceiveFromOtherPane,
-    onUploadExternalFiles: callbacks.onUploadExternalFiles,
+    onMoveEntriesToPath: callbacks.onMoveEntriesToPath,
+    onUploadExternalFiles: handleUploadExternalFiles,
     onOpenEntry: callbacks.onOpenEntry,
     onRangeSelect: callbacks.onRangeSelect,
     onToggleSelection: callbacks.onToggleSelection,
@@ -225,14 +315,26 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
     visibleRows,
   } = useSftpPaneVirtualList({
     isActive,
+    enabled: viewMode === 'list',
     sortedDisplayFiles,
   });
 
+  const toFullPath = useCallback(
+    (target: string) => {
+      const currentPath = pane.connection?.currentPath;
+      if (!currentPath || target.includes("/") || target.includes("\\")) {
+        return target;
+      }
+      return joinPath(currentPath, target);
+    },
+    [pane.connection?.currentPath],
+  );
+
   // Handle keyboard shortcut dialog actions
   const dialogActionHandlers = useMemo(
     () => ({
-      onRename: (fileName: string) => openRenameDialog(fileName),
-      onDelete: (fileNames: string[]) => openDeleteConfirm(fileNames),
+      onRename: (fileName: string) => openRenameDialog(toFullPath(fileName)),
+      onDelete: (fileNames: string[]) => openDeleteConfirm(fileNames.map(toFullPath)),
       onNewFolder: () => {
         setNewFolderName("");
         setShowNewFolderDialog(true);
@@ -249,6 +351,7 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
       openDeleteConfirm,
       openRenameDialog,
       pane.files,
+      toFullPath,
       setFileNameError,
       setNewFileName,
       setNewFolderName,
@@ -257,12 +360,51 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
     ],
   );
 
-  useSftpDialogActionHandler(side, dialogActionHandlers);
+  useSftpDialogActionHandler(side, dialogActionScopeId, dialogActionHandlers, isActive);
 
   const handleSortWithTransition = (field: typeof sortField) => {
     startTransition(() => handleSort(field));
   };
 
+  const handleRefresh = useCallback(() => {
+    callbacks.onRefresh();
+    if (viewMode === 'tree') {
+      requestTreeReload(undefined, true);
+    }
+  }, [callbacks, requestTreeReload, viewMode]);
+
+  const onSetFilterRef = useRef(callbacks.onSetFilter);
+  onSetFilterRef.current = callbacks.onSetFilter;
+  const onClearSelectionRef = useRef(callbacks.onClearSelection);
+  onClearSelectionRef.current = callbacks.onClearSelection;
+
+  const handleSetViewMode = useCallback((mode: 'list' | 'tree') => {
+    setViewMode(mode);
+    saveHostViewMode(mode);
+    if (mode === 'tree') {
+      setShowFilterBar(false);
+      onSetFilterRef.current('');
+      onClearSelectionRef.current();
+    }
+  }, [saveHostViewMode]);
+
+  useEffect(() => {
+    if (viewMode === 'list') {
+      sftpTreeSelectionStore.clearPane(pane.id);
+      return;
+    }
+    sftpListOrderStore.clearPane(pane.id);
+  }, [pane.id, viewMode]);
+
+  // When connecting to a host, restore its saved view mode preference
+  const prevHostIdRef = useRef<string | undefined>(undefined);
+  useEffect(() => {
+    if (hostId && hostId !== prevHostIdRef.current) {
+      setViewMode(hostViewMode ?? sftpDefaultViewMode);
+    }
+    prevHostIdRef.current = hostId;
+  }, [hostId, hostViewMode, sftpDefaultViewMode]);
+
   useEffect(() => {
     logger.debug("SftpPaneView active state", {
       side,
@@ -271,6 +413,17 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
     });
   }, [isActive, pane.id, side]);
 
+  const lastHandledTransferMutationTokenRef = useRef(0);
+  useEffect(() => {
+    if (!pane.connection || pane.transferMutationToken === 0) return;
+    if (pane.transferMutationToken === lastHandledTransferMutationTokenRef.current) return;
+    lastHandledTransferMutationTokenRef.current = pane.transferMutationToken;
+    callbacks.onRefreshTab(pane.id);
+    if (viewMode === 'tree') {
+      requestTreeReload(undefined, true);
+    }
+  }, [callbacks, pane.connection, pane.id, pane.transferMutationToken, requestTreeReload, viewMode]);
+
   if (!pane.connection) {
     return (
       <SftpPaneEmptyState
@@ -304,7 +457,7 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
         onNavigateTo={callbacks.onNavigateTo}
         onSetFilter={callbacks.onSetFilter}
         onSetFilenameEncoding={callbacks.onSetFilenameEncoding}
-        onRefresh={callbacks.onRefresh}
+        onRefresh={handleRefresh}
         showFilterBar={showFilterBar}
         setShowFilterBar={setShowFilterBar}
         filterInputRef={filterInputRef}
@@ -329,20 +482,61 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
         setShowNewFileDialog={setShowNewFileDialog}
         setShowNewFolderDialog={setShowNewFolderDialog}
         setNewFolderName={setNewFolderName}
-        bookmarks={bookmarks}
+        bookmarks={mergedBookmarks}
         isCurrentPathBookmarked={isCurrentPathBookmarked}
         onToggleBookmark={toggleBookmark}
+        onAddGlobalBookmark={globalBookmarks.addBookmark}
+        isCurrentPathGlobalBookmarked={globalBookmarks.isCurrentPathBookmarked}
         onNavigateToBookmark={callbacks.onNavigateTo}
         onDeleteBookmark={deleteBookmark}
         showHiddenFiles={pane.showHiddenFiles}
         onToggleShowHiddenFiles={onToggleShowHiddenFiles}
         onGoToTerminalCwd={onGoToTerminalCwd}
+        viewMode={viewMode}
+        onSetViewMode={handleSetViewMode}
       />
 
+      {treeEverMounted && (
+        <div className={viewMode === 'tree' ? 'flex-1 min-h-0 flex flex-col' : 'hidden'}>
+          <SftpPaneTreeView
+            pane={pane}
+            side={side}
+            onPrepareSelection={callbacks.onPrepareSelection}
+            onLoadChildren={callbacks.onListDirectory}
+            onMoveEntriesToPath={handleMoveEntriesToPath}
+            onNavigateUp={callbacks.onNavigateUp}
+            onNavigateTo={callbacks.onNavigateTo}
+            onRefresh={handleRefresh}
+            onOpenEntry={callbacks.onOpenEntry}
+            onDragStart={onDragStart}
+            onDragEnd={onDragEnd}
+            openRenameDialog={openRenameDialog}
+            openDeleteConfirm={openDeleteConfirm}
+            onCopyToOtherPane={callbacks.onCopyToOtherPane}
+            onReceiveFromOtherPane={callbacks.onReceiveFromOtherPane}
+            onOpenFileWith={callbacks.onOpenFileWith}
+            onEditFile={callbacks.onEditFile}
+            onDownloadFile={callbacks.onDownloadFile}
+            onEditPermissions={callbacks.onEditPermissions}
+            draggedFiles={draggedFiles}
+            openNewFolderDialog={openNewFolderDialogAtPath}
+            openNewFileDialog={openNewFileDialogAtPath}
+            onUploadExternalFiles={handleUploadExternalFiles}
+            columnWidths={columnWidths}
+            handleSort={handleSortWithTransition}
+            handleResizeStart={handleResizeStart}
+            sortField={sortField}
+            sortOrder={sortOrder}
+            reloadRequest={treeReloadRequest}
+          />
+        </div>
+      )}
+      <div className={viewMode === 'list' ? 'flex-1 min-h-0 flex flex-col' : 'hidden'}>
       <SftpPaneFileList
         t={t}
         pane={pane}
         side={side}
+        isPaneFocused={isPaneFocused}
         columnWidths={columnWidths}
         sortField={sortField}
         sortOrder={sortOrder}
@@ -355,7 +549,9 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
         sortedDisplayFiles={sortedDisplayFiles}
         isDragOverPane={isDragOverPane}
         draggedFiles={draggedFiles}
-        onRefresh={callbacks.onRefresh}
+        onRefresh={handleRefresh}
+        onNavigateTo={callbacks.onNavigateTo}
+        onClearSelection={callbacks.onClearSelection}
         setShowNewFolderDialog={setShowNewFolderDialog}
         setShowNewFileDialog={setShowNewFileDialog}
         getNextUntitledName={getNextUntitledName}
@@ -370,6 +566,7 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
         handleRowDragLeave={handleRowDragLeave}
         handleEntryDrop={handleEntryDrop}
         onCopyToOtherPane={callbacks.onCopyToOtherPane}
+        onMoveEntriesToPath={handleMoveEntriesToPath}
         onOpenFileWith={callbacks.onOpenFileWith}
         onEditFile={callbacks.onEditFile}
         onDownloadFile={callbacks.onDownloadFile}
@@ -379,9 +576,12 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
         rowHeight={rowHeight}
         visibleRows={visibleRows}
       />
+      </div>
 
       <SftpPaneDialogs
         t={t}
+        hostLabel={pane.connection?.hostLabel}
+        currentPath={pane.connection?.currentPath}
         showNewFolderDialog={showNewFolderDialog}
         setShowNewFolderDialog={setShowNewFolderDialog}
         newFolderName={newFolderName}
@@ -430,8 +630,11 @@ const sftpPaneViewAreEqual = (
 ): boolean => {
   if (prev.pane !== next.pane) return false;
   if (prev.side !== next.side) return false;
+  if (prev.dialogActionScopeId !== next.dialogActionScopeId) return false;
+  if (prev.isPaneFocused !== next.isPaneFocused) return false;
   if (prev.showHeader !== next.showHeader) return false;
   if (prev.showEmptyHeader !== next.showEmptyHeader) return false;
+  if (prev.sftpDefaultViewMode !== next.sftpDefaultViewMode) return false;
 
   return true;
 };