(fix) autocomplete popup visible after sending command (#1121)

Co-authored-by: pyroch <cvdysh@gmail.com>

.github/scripts/bump-homebrew-cask.sh

@@ -0,0 +1,89 @@
+#!/usr/bin/env bash
+#
+# bump-homebrew-cask.sh — push a new version of the Netcatty cask to the
+# binaricat/homebrew-netcatty tap.
+#
+# Called from the release pipeline (`build.yml` → `homebrew-tap` job) after
+# the GitHub Release has been published with the signed + notarized DMGs.
+# Computes SHA-256 of the arm64 and x64 DMGs, rewrites the cask file, and
+# pushes the bump back to the tap repository using HOMEBREW_TAP_TOKEN.
+#
+# Required env vars:
+#   VERSION              — semver without leading "v" (e.g. 1.1.6)
+#   HOMEBREW_TAP_TOKEN   — PAT with contents:write on the tap repo
+#
+# Optional env vars:
+#   TAP_REPO             — default: binaricat/homebrew-netcatty
+#   ARTIFACTS_DIR        — default: artifacts
+#   CASK_PATH            — default: Casks/netcatty.rb
+set -euo pipefail
+
+: "${VERSION:?VERSION env var required (no leading v)}"
+: "${HOMEBREW_TAP_TOKEN:?HOMEBREW_TAP_TOKEN env var required}"
+
+TAP_REPO="${TAP_REPO:-binaricat/homebrew-netcatty}"
+ARTIFACTS_DIR="${ARTIFACTS_DIR:-artifacts}"
+CASK_PATH="${CASK_PATH:-Casks/netcatty.rb}"
+
+ARM_DMG="${ARTIFACTS_DIR}/Netcatty-${VERSION}-mac-arm64.dmg"
+X64_DMG="${ARTIFACTS_DIR}/Netcatty-${VERSION}-mac-x64.dmg"
+
+for f in "$ARM_DMG" "$X64_DMG"; do
+  if [[ ! -f "$f" ]]; then
+    echo "::error::Required DMG artifact not found: $f"
+    exit 1
+  fi
+done
+
+ARM_SHA=$(shasum -a 256 "$ARM_DMG" | awk '{print $1}')
+X64_SHA=$(shasum -a 256 "$X64_DMG" | awk '{print $1}')
+
+echo "Computed checksums:"
+echo "  arm64: ${ARM_SHA}"
+echo "  x64  : ${X64_SHA}"
+
+TMP=$(mktemp -d)
+trap 'rm -rf "$TMP"' EXIT
+
+git clone --depth 1 \
+  "https://x-access-token:${HOMEBREW_TAP_TOKEN}@github.com/${TAP_REPO}.git" \
+  "$TMP/tap"
+cd "$TMP/tap"
+
+if [[ ! -f "$CASK_PATH" ]]; then
+  echo "::error::Cask file not found in tap: $CASK_PATH"
+  exit 1
+fi
+
+# Patch the cask in place. The three lines we touch are anchored well enough
+# that we don't need anything fancier than sed:
+#   - the `version "X.Y.Z"` line (single line, anchored to start)
+#   - the `sha256 arm:   "..."` line
+#   - the `       intel: "..."` line (anchor on "intel:" at start, after the
+#     leading whitespace, so we don't accidentally match the `arch arm:
+#     "...", intel: "..."` line earlier in the file)
+sed -i -E 's|^(\s*version)\s+"[^"]+"|\1 "'"$VERSION"'"|' "$CASK_PATH"
+sed -i -E 's|(sha256\s+arm:\s+)"[^"]+"|\1"'"$ARM_SHA"'"|' "$CASK_PATH"
+sed -i -E 's|^(\s*intel:\s+)"[^"]+"|\1"'"$X64_SHA"'"|' "$CASK_PATH"
+
+# Sanity-check: parsed file should still be valid Ruby. Catches a broken
+# substitution before we push.
+if command -v ruby >/dev/null 2>&1; then
+  ruby -c "$CASK_PATH" >/dev/null
+fi
+
+if git diff --quiet; then
+  echo "Cask already at ${VERSION} with matching checksums — nothing to push."
+  exit 0
+fi
+
+echo "Cask diff:"
+git --no-pager diff "$CASK_PATH"
+
+git config user.email "github-actions[bot]@users.noreply.github.com"
+git config user.name "github-actions[bot]"
+git add "$CASK_PATH"
+git commit -m "Bump netcatty to ${VERSION}"
+git push origin HEAD:main
+
+echo "Pushed bump for ${VERSION} to ${TAP_REPO}."

.github/workflows/build.yml

@@ -604,3 +604,33 @@ jobs:
           generate_release_notes: true
           fail_on_unmatched_files: false
           token: ${{ secrets.RELEASE_TOKEN }}
+
+  homebrew-tap:
+    name: bump homebrew tap
+    runs-on: ubuntu-latest
+    needs: release
+    # Only stable release tags update the Cask. Prerelease tags
+    # (e.g. v1.2.0-rc.1) are skipped so brew users stay on stable.
+    if: |
+      startsWith(github.ref, 'refs/tags/v')
+      && !contains(github.ref_name, '-')
+      && (github.event_name == 'push' || (github.event_name == 'workflow_dispatch' && inputs.publish_release))
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Download macOS artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: netcatty-macos
+          path: artifacts/
+
+      - name: Bump Cask in binaricat/homebrew-netcatty
+        env:
+          HOMEBREW_TAP_TOKEN: ${{ secrets.HOMEBREW_TAP_TOKEN }}
+          ARTIFACTS_DIR: artifacts
+        run: |
+          # Strip the leading "v" — Cask version is plain semver.
+          VERSION="${GITHUB_REF_NAME#v}"
+          export VERSION
+          bash .github/scripts/bump-homebrew-cask.sh

App.tsx

@@ -28,7 +28,12 @@ import { upsertKnownHost } from './domain/knownHosts';
 import { materializeHostProxyProfile } from './domain/proxyProfiles';
 import { resolveHostAuth } from './domain/sshAuth';
 import { isEncryptedCredentialPlaceholder } from './domain/credentials';
-import { applyCustomAccentToTerminalTheme, resolveHostTerminalThemeId } from './domain/terminalAppearance';
+import {
+  applyCustomAccentToTerminalTheme,
+  mergeTerminalHostUpdate,
+  resolveHostTerminalThemeId,
+} from './domain/terminalAppearance';
+import { selectConnectionLogForTerminalDataCapture } from './domain/connectionLog';
 import { collectSessionIds } from './domain/workspace';
 import { resolveCloseIntent } from './application/state/resolveCloseIntent';
 import { resolveSnippetsShortcutIntent } from './application/state/resolveSnippetsShortcutIntent';
@@ -55,6 +60,7 @@ import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, D
 import { Input } from './components/ui/input';
 import { Label } from './components/ui/label';
 import { ToastProvider, toast } from './components/ui/toast';
+import { TooltipProvider } from './components/ui/tooltip';
 import { VaultView, VaultSection } from './components/VaultView';
 import { QuickAddSnippetDialog } from './components/QuickAddSnippetDialog';
 import { AddToWorkspaceDialog } from './components/workspace/AddToWorkspaceDialog';
@@ -176,12 +182,22 @@ const TerminalLayerMount: React.FC<TerminalLayerProps> = (props) => {
 
   useEffect(() => {
     if (shouldMount) return;
-    // Warm up the terminal layer shortly after first paint to reduce latency when opening a session.
-    const id = window.setTimeout(() => setShouldMount(true), 1200);
+    type IdleWindow = Window & {
+      requestIdleCallback?: (callback: () => void, options?: { timeout: number }) => number;
+      cancelIdleCallback?: (id: number) => void;
+    };
+    const idleWindow = window as IdleWindow;
+    if (typeof idleWindow.requestIdleCallback === "function") {
+      const id = idleWindow.requestIdleCallback(() => setShouldMount(true), { timeout: 5000 });
+      return () => idleWindow.cancelIdleCallback?.(id);
+    }
+    const id = window.setTimeout(() => setShouldMount(true), 5000);
     return () => window.clearTimeout(id);
   }, [shouldMount]);
 
-  if (!shouldMount) return null;
+  const shouldRender = shouldMount || isVisible;
+
+  if (!shouldRender) return null;
 
   return (
     <Suspense fallback={null}>
@@ -300,6 +316,16 @@ function App({ settings }: { settings: SettingsState }) {
   keysRef.current = keys;
   const knownHostsRef = useRef(knownHosts);
   knownHostsRef.current = knownHosts;
+  // Bridge the gap while useVaultState hydrates: its async init awaits
+  // hosts/keys/identities/proxyProfiles decryption before reading knownHosts,
+  // so the state is briefly [] at boot even when localStorage has entries.
+  // Any SSH connect during that window (manual click or restored session)
+  // would otherwise see no trusted hosts and prompt for fingerprint
+  // re-confirmation. Mirrors the same fallback already used by sync payloads.
+  const effectiveKnownHosts = useMemo(
+    () => getEffectiveKnownHosts(knownHosts) ?? [],
+    [knownHosts],
+  );
 
   const {
     sessions,
@@ -335,6 +361,7 @@ function App({ settings }: { settings: SettingsState }) {
     splitSession,
     toggleWorkspaceViewMode,
     setWorkspaceFocusedSession,
+    reorderWorkspaceSessions,
     moveFocusInWorkspace,
     runSnippet,
     orphanSessions,
@@ -1170,12 +1197,11 @@ function App({ settings }: { settings: SettingsState }) {
   const addConnectionLogRef = useRef(addConnectionLog);
   addConnectionLogRef.current = addConnectionLog;
 
-  const closeSidePanelRef = useRef<(() => void) | null>(null);
   const toggleScriptsSidePanelRef = useRef<(() => void) | null>(null);
+  const toggleSidePanelRef = useRef<(() => void) | null>(null);
   // Populated below so the hotkey dispatcher can open the Settings window
   // even though `handleOpenSettings` is declared further down in the file.
   const handleOpenSettingsRef = useRef<() => void>(() => {});
-  const activeSidePanelTabRef = useRef<string | null>(null);
   const closeTabInFlightRef = useRef(false);
   // Populated by UnsavedChangesProvider render-prop below so that the hotkey
   // dispatcher (defined outside that scope) can still reach the dirty-confirm
@@ -1355,13 +1381,11 @@ function App({ settings }: { settings: SettingsState }) {
         const workspace = workspaces.find((w) => w.id === currentId) ?? null;
 
         const focusIsInsideTerminal = !!document.activeElement?.closest('[data-session-id]');
-        const activeSidePanel = activeSidePanelTabRef.current;
 
         const intent = resolveCloseIntent({
           activeTabId: currentId,
           workspace: workspace ? { id: workspace.id, focusedSessionId: workspace.focusedSessionId } : null,
           sessionForTab: session,
-          activeSidePanelTab: activeSidePanel,
           focusIsInsideTerminal,
         });
 
@@ -1375,10 +1399,6 @@ function App({ settings }: { settings: SettingsState }) {
                 if (ok) closeSession(intent.sessionId);
                 return;
               }
-              case 'closeSidePanel': {
-                closeSidePanelRef.current?.();
-                return;
-              }
               case 'closeWorkspace': {
                 const ids = sessions.filter((s) => s.workspaceId === intent.workspaceId).map((s) => s.id);
                 const ok = await confirmIfBusyLocalTerminal(ids);
@@ -1454,6 +1474,9 @@ function App({ settings }: { settings: SettingsState }) {
           setNavigateToSection('snippets');
         }
         break;
+      case 'toggleSidePanel':
+        toggleSidePanelRef.current?.();
+        break;
       case 'broadcast': {
         // Toggle broadcast mode for the active workspace
         const currentId = activeTabStore.getActiveTabId();
@@ -1704,6 +1727,12 @@ function App({ settings }: { settings: SettingsState }) {
     }
   }, [updateSessionStatus, updateHostLastConnected]);
 
+  const handleUpdateHostFromTerminal = useCallback((host: Host) => {
+    updateHosts(hosts.map((h) => (
+      h.id === host.id ? mergeTerminalHostUpdate(h, host) : h
+    )));
+  }, [hosts, updateHosts]);
+
   // Wrapper to create serial session with logging
   const handleConnectSerial = useCallback((config: SerialConfig, options?: { charset?: string }) => {
     const { username, hostname } = systemInfoRef.current;
@@ -1730,15 +1759,10 @@ function App({ settings }: { settings: SettingsState }) {
     if (IS_DEV) console.log('[handleTerminalDataCapture] Session', session);
     if (IS_DEV) console.log('[handleTerminalDataCapture] All logs:', connectionLogs.map(l => ({ id: l.id, sessionId: l.sessionId, hostname: l.hostname, endTime: l.endTime, hasTerminalData: !!l.terminalData })));
 
-    // Prefer the persisted sessionId because the session may already have been
-    // removed from state by the time the terminal unmount cleanup runs.
-    const matchingLog = connectionLogs
-      .filter((log) => {
-        if (log.endTime || log.terminalData) return false;
-        if (log.sessionId) return log.sessionId === sessionId;
-        return !!session && log.hostname === session.hostname;
-      })
-      .sort((a, b) => b.startTime - a.startTime)[0];
+    const matchingLog = selectConnectionLogForTerminalDataCapture(
+      connectionLogs,
+      { sessionId, hostname: session?.hostname },
+    );
 
     if (IS_DEV) console.log('[handleTerminalDataCapture] Matching log', matchingLog);
 
@@ -1996,11 +2020,11 @@ function App({ settings }: { settings: SettingsState }) {
             snippets={snippets}
             snippetPackages={snippetPackages}
             customGroups={customGroups}
-            knownHosts={knownHosts}
+            knownHosts={effectiveKnownHosts}
             shellHistory={shellHistory}
             connectionLogs={connectionLogs}
             managedSources={managedSources}
-            sessions={sessions}
+            sessionCount={sessions.length}
             hotkeyScheme={hotkeyScheme}
             keyBindings={keyBindings}
             terminalThemeId={terminalThemeId}
@@ -2069,7 +2093,7 @@ function App({ settings }: { settings: SettingsState }) {
           snippetPackages={snippetPackages}
           sessions={sessions}
           workspaces={workspaces}
-          knownHosts={knownHosts}
+          knownHosts={effectiveKnownHosts}
           draggingSessionId={draggingSessionId}
           terminalTheme={currentTerminalTheme}
           followAppTerminalTheme={followAppTerminalTheme}
@@ -2088,7 +2112,7 @@ function App({ settings }: { settings: SettingsState }) {
           onCloseSession={closeSession}
           onUpdateSessionStatus={handleSessionStatusChange}
           onUpdateHostDistro={updateHostDistro}
-          onUpdateHost={(host) => updateHosts(hosts.map(h => h.id === host.id ? host : h))}
+          onUpdateHost={handleUpdateHostFromTerminal}
           onAddKnownHost={handleAddKnownHost}
           onCommandExecuted={(command, hostId, hostLabel, sessionId) => {
             addShellHistoryEntry({ command, hostId, hostLabel, sessionId });
@@ -2103,6 +2127,7 @@ function App({ settings }: { settings: SettingsState }) {
           onSetDraggingSessionId={setDraggingSessionId}
           onToggleWorkspaceViewMode={toggleWorkspaceViewMode}
           onSetWorkspaceFocusedSession={setWorkspaceFocusedSession}
+          onReorderWorkspaceSessions={reorderWorkspaceSessions}
           onSplitSession={splitSessionWithCurrentShell}
           isBroadcastEnabled={isBroadcastEnabled}
           onToggleBroadcast={toggleBroadcast}
@@ -2118,9 +2143,8 @@ function App({ settings }: { settings: SettingsState }) {
           sessionLogsEnabled={sessionLogsEnabled}
           sessionLogsDir={sessionLogsDir}
           sessionLogsFormat={sessionLogsFormat}
-          closeSidePanelRef={closeSidePanelRef}
           toggleScriptsSidePanelRef={toggleScriptsSidePanelRef}
-          activeSidePanelTabRef={activeSidePanelTabRef}
+          toggleSidePanelRef={toggleSidePanelRef}
         />
 
         {/* Log Views - readonly terminal replays */}
@@ -2426,7 +2450,9 @@ function AppWithProviders() {
   return (
     <I18nProvider locale={settings.uiLanguage}>
       <ToastProvider>
-        <App settings={settings} />
+        <TooltipProvider delayDuration={300}>
+          <App settings={settings} />
+        </TooltipProvider>
       </ToastProvider>
     </I18nProvider>
   );

application/i18n/locales/en.ts

@@ -264,6 +264,10 @@ const en: Messages = {
   'settings.terminal.theme.selectButton': 'Select Theme',
   'settings.terminal.theme.followApp': 'Follow Application Theme',
   'settings.terminal.theme.followApp.desc': 'Automatically match the terminal background to the current app theme for a seamless look.',
+  'settings.terminal.theme.darkTheme': 'Dark mode terminal theme',
+  'settings.terminal.theme.lightTheme': 'Light mode terminal theme',
+  'settings.terminal.theme.auto': 'Auto (match app theme)',
+  'settings.terminal.theme.autoDesc': 'Follows the active UI theme preset',
   'settings.terminal.section.font': 'Font',
   'settings.terminal.section.cursor': 'Cursor',
   'settings.terminal.section.keyboard': 'Keyboard',
@@ -301,6 +305,9 @@ const en: Messages = {
   'settings.terminal.keyboard.altAsMeta': 'Use Option as Meta key',
   'settings.terminal.keyboard.altAsMeta.desc':
     'Use Option (Alt) as the Meta key instead of for special characters',
+  'settings.terminal.keyboard.optionArrowWordJump': 'Option+←/→ jumps by word',
+  'settings.terminal.keyboard.optionArrowWordJump.desc':
+    'Send Meta-b / Meta-f on Option+Left/Right so the shell moves by word, instead of the default ^[[1;3D / ^[[1;3C',
   'settings.terminal.accessibility.minimumContrastRatio': 'Minimum contrast ratio',
   'settings.terminal.accessibility.minimumContrastRatio.desc':
     'Adjust colors to meet contrast requirements (1 = disabled, 21 = max)',
@@ -323,6 +330,9 @@ const en: Messages = {
   'settings.terminal.behavior.preserveSelectionOnInput': 'Keep selection while typing',
   'settings.terminal.behavior.preserveSelectionOnInput.desc':
     'Don\'t clear mouse-selected text when typing — useful for selecting a path then pasting it after a command prefix like `sz `.',
+  'settings.terminal.behavior.forcePromptNewLine': 'Prompt on a new line',
+  'settings.terminal.behavior.forcePromptNewLine.desc':
+    'When the final line of command output is not terminated by a newline, move the recognized shell prompt to the next visual line.',
   'settings.terminal.behavior.osc52Clipboard': 'OSC-52 clipboard',
   'settings.terminal.behavior.osc52Clipboard.desc':
     'Allow remote programs (tmux, vim, etc.) to access the local clipboard via OSC-52 escape sequences.',
@@ -356,14 +366,21 @@ const en: Messages = {
   'settings.terminal.behavior.linkModifier.meta': 'Cmd / Win',
   'settings.terminal.scrollback.desc': 'Limit number of terminal rows. Set to 0 for no limit.',
   'settings.terminal.scrollback.rows': 'Number of rows *',
+  'settings.terminal.section.startupCommand': 'Startup command',
+  'settings.terminal.startupCommandDelay.label': 'Startup command delay (ms)',
+  'settings.terminal.startupCommandDelay.desc': 'How long to wait after connecting before sending the startup command. Also used between lines when the startup command has multiple lines. Increase for slow connections.',
   'settings.terminal.keywordHighlight.title': 'Keyword highlighting',
   'settings.terminal.keywordHighlight.resetColors': 'Reset to default colors',
+  'settings.terminal.keywordHighlight.resetDefaults': 'Reset built-ins to defaults',
+  'settings.terminal.keywordHighlight.resetBuiltIn': 'Restore default label and patterns',
   'settings.terminal.keywordHighlight.addCustom': 'Add Custom Rule',
   'settings.terminal.keywordHighlight.editCustom': 'Edit Rule',
+  'settings.terminal.keywordHighlight.editBuiltIn': 'Edit Built-in 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.patternField': 'Regex Patterns',
+  'settings.terminal.keywordHighlight.patternPlaceholder': 'One regex per line (e.g., \\bdown\\b)',
+  'settings.terminal.keywordHighlight.patternHint': 'One regex per line. Patterns are matched case-insensitively with the global flag.',
   'settings.terminal.keywordHighlight.invalidPattern': 'Invalid regex pattern',
   'settings.terminal.keywordHighlight.preview': 'Preview',
   'settings.terminal.section.localShell': 'Local Shell',
@@ -815,6 +832,11 @@ const en: Messages = {
   'sftp.transfers.collapseChildList': 'Hide',
   'sftp.transfers.retryAction': 'Retry',
   'sftp.transfers.dismissAction': 'Dismiss',
+  'sftp.transfers.openTargetFolder': 'Open target folder',
+  'sftp.transfers.openTargetFolderError': 'Could not open target folder',
+  'sftp.transfers.copyTargetPath': 'Copy target path',
+  'sftp.transfers.copyTargetPathSuccess': 'Target path copied',
+  'sftp.transfers.copyTargetPathError': 'Could not copy target path',
   'sftp.transfers.resizeNameColumn': 'Resize file name column',
   'sftp.transfers.dragToResize': 'Drag to resize',
   'sftp.goUp': 'Go up',
@@ -1128,10 +1150,23 @@ const en: Messages = {
   '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.section.sshAlgorithms': 'SSH Algorithms',
+  'hostDetails.section.terminalBehavior': 'Terminal Behavior',
   '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.skipEcdsaHostKey': 'Skip ECDSA host key',
+  'hostDetails.skipEcdsaHostKey.desc': 'Some old Huawei / Cisco switches produce non-standard ECDSA host-key signatures that cause "signature verification failed". Turning this on drops every ecdsa-sha2-* from the client offer so negotiation falls back to RSA / Ed25519.',
+  'hostDetails.algorithms.advanced': 'Advanced algorithm overrides',
+  'hostDetails.algorithms.advanced.desc': 'Replace the offered algorithm list for any category on a per-host basis. Leaving a category untouched uses the default; selecting a subset fully replaces the default list. Incorrect values can make the host unreachable.',
+  'hostDetails.algorithms.inheritedNotice': 'The current group has algorithm overrides set for: {categories}. The "Reset" button here falls back to the group\'s lists, not NetCatty\'s defaults. To ignore the group restriction, clear the override in the group\'s algorithm settings.',
+  'hostDetails.algorithms.customized': 'customized',
+  'hostDetails.algorithms.reset': 'Reset',
+  'hostDetails.algorithms.category.kex': 'Key Exchange (KEX)',
+  'hostDetails.algorithms.category.cipher': 'Cipher',
+  'hostDetails.algorithms.category.hmac': 'MAC (HMAC)',
+  'hostDetails.algorithms.category.serverHostKey': 'Host Key',
+  'hostDetails.algorithms.category.compress': 'Compression',
   'hostDetails.section.keepalive': 'Keepalive',
   'hostDetails.keepalive.override': 'Override global keepalive',
   'hostDetails.keepalive.desc': 'Use a custom keepalive policy for this host instead of the global setting. Useful for older routers or switches whose SSH server does not reply to keepalive@openssh.com requests — set interval to 0 to disable keepalive entirely on this host.',
@@ -1319,6 +1354,7 @@ const en: Messages = {
   'terminal.menu.paste': 'Paste',
   'terminal.menu.pasteSelection': 'Paste Selection',
   'terminal.menu.selectAll': 'Select All',
+  'terminal.menu.reconnect': 'Reconnect',
   'terminal.menu.splitHorizontal': 'Split Horizontal',
   'terminal.menu.splitVertical': 'Split Vertical',
   'terminal.menu.clearBuffer': 'Clear Buffer',
@@ -1877,6 +1913,18 @@ const en: Messages = {
   'ai.providers.remove': 'Remove',
   'ai.providers.name': 'Display Name',
   'ai.providers.name.placeholder': 'e.g. My Provider',
+  'ai.providers.style': 'Protocol style',
+  'ai.providers.style.anthropic': 'Anthropic-compatible',
+  'ai.providers.style.openai': 'OpenAI-compatible',
+  'ai.providers.style.google': 'Google-compatible',
+  'ai.providers.style.inherited': 'auto',
+  'ai.providers.style.help': 'Selects which API format requests use. Override when a third-party endpoint speaks a different dialect than its provider type suggests.',
+  'ai.providers.icon.change': 'Change icon',
+  'ai.providers.icon.upload': 'Upload image',
+  'ai.providers.icon.reset': 'Reset',
+  'ai.providers.icon.close': 'Close',
+  'ai.providers.icon.uploadedNote': 'Custom icon (64×64 WebP)',
+  'ai.providers.icon.errorType': 'Please choose an image file.',
   'ai.providers.apiKey': 'API Key',
   'ai.providers.apiKey.placeholder': 'Enter API key',
   'ai.providers.apiKey.decrypting': 'Decrypting...',
@@ -1922,13 +1970,20 @@ const en: Messages = {
 
   // AI Claude Code
   'ai.claude.title': 'Claude Code',
-  'ai.claude.description': "Anthropic's agentic coding assistant. Uses claude-agent-acp for ACP protocol streaming.",
+  'ai.claude.description': "Anthropic's agentic coding assistant. Requires the system Claude Code CLI.",
   'ai.claude.detecting': 'Detecting...',
   'ai.claude.detected': 'Detected',
   'ai.claude.notFound': 'Not found',
   'ai.claude.path': 'Path:',
   'ai.claude.notFoundHint': 'Could not find claude in PATH. Install it or specify the executable path below.',
   'ai.claude.customPathPlaceholder': 'e.g. /usr/local/bin/claude',
+  'ai.claude.configSection': 'Authentication & config (optional)',
+  'ai.claude.configDir': 'Config directory',
+  'ai.claude.configDir.placeholder': '~/.claude (leave blank for default)',
+  'ai.claude.configDir.hint': 'Sets CLAUDE_CONFIG_DIR — point at a folder where you have run `claude` login (contains settings.json + credentials).',
+  'ai.claude.envVars': 'Environment variables',
+  'ai.claude.envVars.placeholder': 'ANTHROPIC_BASE_URL=https://...\nANTHROPIC_MODEL=...',
+  'ai.claude.envVars.hint': 'One KEY=VALUE per line, passed to the Claude agent. Stored locally in plaintext — for API keys / credentials, prefer the config directory above (a `claude` login).',
   'ai.claude.check': 'Check',
 
   // AI GitHub Copilot CLI
@@ -1999,6 +2054,8 @@ const en: Messages = {
   'ai.chat.placeholder': 'Message {agent} — @ to include context, / for commands',
   'ai.chat.placeholderDefault': 'Message Catty Agent...',
   'ai.chat.noModel': 'No model',
+  'ai.chat.noProviderModel': 'No default model — set one in Settings → AI → Providers.',
+  'ai.chat.selectProvider': 'Select provider',
   'ai.chat.recent': 'Recent',
   'ai.chat.viewAll': 'View All',
   'ai.chat.untitled': 'Untitled',
@@ -2054,6 +2111,37 @@ const en: Messages = {
   'ai.safety.blocklist.reset': 'Reset to defaults',
   'ai.safety.blocklist.add': 'Add pattern',
   'ai.safety.note': 'Command Blocklist, Command Timeout, and Observer mode are enforced at the MCP Server level, applying to all agent types. Confirm mode and Max Iterations are fully enforced for the built-in agent; ACP agents may have their own internal controls for these settings.',
+
+  // Unified tooltips for terminal workspace and top tabs (issue #954)
+  'terminal.layer.addTerminal': 'Add Terminal',
+  'terminal.layer.switchToSplitView': 'Switch to Split View',
+  'terminal.layer.sftp': 'SFTP',
+  'terminal.layer.scripts': 'Scripts',
+  'terminal.layer.theme': 'Theme',
+  'terminal.layer.aiChat': 'AI Chat',
+  'terminal.layer.movePanelLeft': 'Move panel to left',
+  'terminal.layer.movePanelRight': 'Move panel to right',
+  'terminal.layer.closePanel': 'Close panel',
+  'topTabs.openQuickSwitcher': 'Open quick switcher',
+  'topTabs.moreTabs': 'More tabs',
+  'topTabs.aiAssistant': 'AI Assistant',
+  'topTabs.toggleTheme': 'Toggle theme',
+  'topTabs.openSettings': 'Open Settings',
+  'ai.chat.sessionHistory': 'Session history',
+  'ai.chat.attach': 'Attach',
+  'ai.chat.collapse': 'Collapse',
+  'ai.chat.expand': 'Expand',
+  'ai.chat.enableAgent': 'Enable {name}',
+  'zmodem.waitingForRemote': 'Waiting for remote...',
+  'zmodem.uploading': 'Uploading',
+  'zmodem.downloading': 'Downloading',
+  'zmodem.cancelTransfer': 'Cancel transfer (Ctrl+C)',
+  'zmodem.overwrite.title': 'Remote file already exists',
+  'zmodem.overwrite.applyToRest': 'Apply to remaining conflicts',
+  'zmodem.overwrite.overwrite': 'Overwrite',
+  'zmodem.overwrite.skip': 'Skip',
+  'zmodem.overwrite.cancel': 'Cancel',
+  'settings.shortcuts.resetToDefault': 'Reset to default',
 };
 
 export default en;

application/i18n/locales/zh-CN.ts

@@ -586,6 +586,11 @@ const zhCN: Messages = {
   'sftp.transfers.collapseChildList': '收起',
   'sftp.transfers.retryAction': '重试',
   'sftp.transfers.dismissAction': '移除',
+  'sftp.transfers.openTargetFolder': '打开目标目录',
+  'sftp.transfers.openTargetFolderError': '无法打开目标目录',
+  'sftp.transfers.copyTargetPath': '复制目标路径',
+  'sftp.transfers.copyTargetPathSuccess': '已复制目标路径',
+  'sftp.transfers.copyTargetPathError': '无法复制目标路径',
   'sftp.transfers.resizeNameColumn': '调整文件名列宽',
   'sftp.transfers.dragToResize': '拖拽调整高度',
   'sftp.goUp': '上一级',
@@ -744,10 +749,23 @@ const zhCN: Messages = {
   '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.section.sshAlgorithms': 'SSH 算法',
+  'hostDetails.section.terminalBehavior': '终端行为',
   '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.skipEcdsaHostKey': '跳过 ECDSA 主机密钥',
+  'hostDetails.skipEcdsaHostKey.desc': '某些老款华为 / 思科交换机的 ECDSA 主机密钥签名不规范，会导致连接报 "signature verification failed"。开启后客户端不再 advertise ecdsa-sha2-*，强制使用 RSA / Ed25519。',
+  'hostDetails.algorithms.advanced': '高级算法配置',
+  'hostDetails.algorithms.advanced.desc': '针对单个 host 自定义各分类的算法清单。不勾选 = 使用默认；勾选子集后将完全替换默认列表。配置错误可能导致无法连接。',
+  'hostDetails.algorithms.inheritedNotice': '当前组已设置以下分类的算法 override：{categories}。本面板的"恢复默认"只会回到组的设置，而不是 NetCatty 默认列表。若要忽略组的限制，请到组的算法设置里取消。',
+  'hostDetails.algorithms.customized': '已自定义',
+  'hostDetails.algorithms.reset': '恢复默认',
+  'hostDetails.algorithms.category.kex': '密钥交换 (KEX)',
+  'hostDetails.algorithms.category.cipher': '加密算法 (Cipher)',
+  'hostDetails.algorithms.category.hmac': '完整性算法 (HMAC)',
+  'hostDetails.algorithms.category.serverHostKey': '主机密钥 (Host Key)',
+  'hostDetails.algorithms.category.compress': '压缩 (Compression)',
   'hostDetails.section.keepalive': '会话保活',
   'hostDetails.keepalive.override': '为此主机单独配置',
   'hostDetails.keepalive.desc': '为该主机使用专属的保活策略，而不是跟随全局设置。适用于不响应 keepalive@openssh.com 请求的老旧路由器 / 交换机——将间隔设为 0 可对该主机彻底关闭保活。',
@@ -900,6 +918,7 @@ const zhCN: Messages = {
   'terminal.menu.paste': '粘贴',
   'terminal.menu.pasteSelection': '粘贴选中文本',
   'terminal.menu.selectAll': '全选',
+  'terminal.menu.reconnect': '重新连接',
   'terminal.menu.splitHorizontal': '水平分屏',
   'terminal.menu.splitVertical': '垂直分屏',
   'terminal.menu.clearBuffer': '清空缓冲区',
@@ -1403,6 +1422,10 @@ const zhCN: Messages = {
   'settings.terminal.theme.selectButton': '选择主题',
   'settings.terminal.theme.followApp': '跟随应用主题',
   'settings.terminal.theme.followApp.desc': '终端背景色自动匹配当前应用主题，保持视觉一致性。',
+  'settings.terminal.theme.darkTheme': '深色模式终端主题',
+  'settings.terminal.theme.lightTheme': '浅色模式终端主题',
+  'settings.terminal.theme.auto': '自动（跟随界面主题）',
+  'settings.terminal.theme.autoDesc': '跟随当前界面主题预设',
   'settings.terminal.section.font': '字体',
   'settings.terminal.section.cursor': '光标',
   'settings.terminal.section.keyboard': '键盘',
@@ -1439,6 +1462,8 @@ const zhCN: Messages = {
   'settings.terminal.cursor.blink': '光标闪烁',
   'settings.terminal.keyboard.altAsMeta': '将 Option 作为 Meta 键',
   'settings.terminal.keyboard.altAsMeta.desc': '使用 Option (Alt) 作为 Meta 键，而不是用于输入特殊字符',
+  'settings.terminal.keyboard.optionArrowWordJump': 'Option+←/→ 按单词跳转',
+  'settings.terminal.keyboard.optionArrowWordJump.desc': '按 Option+左/右 时发送 Meta-b / Meta-f，让 Shell 按单词移动光标（而非默认的 ^[[1;3D / ^[[1;3C）',
   'settings.terminal.accessibility.minimumContrastRatio': '最小对比度',
   'settings.terminal.accessibility.minimumContrastRatio.desc': '调整颜色以满足对比度要求 (1 = 禁用, 21 = 最大)',
   'settings.terminal.behavior.rightClick': '右键行为',
@@ -1459,6 +1484,9 @@ const zhCN: Messages = {
   'settings.terminal.behavior.preserveSelectionOnInput': '输入时保留选区',
   'settings.terminal.behavior.preserveSelectionOnInput.desc':
     '键盘输入时不清除鼠标选中的文本，方便选中路径后输入 `sz ` 之类命令再粘贴。',
+  'settings.terminal.behavior.forcePromptNewLine': '提示符另起一行',
+  'settings.terminal.behavior.forcePromptNewLine.desc':
+    '当命令输出的最后一行未以换行符结束时，将识别到的 shell 提示符移动到下一行显示。',
   'settings.terminal.behavior.osc52Clipboard': 'OSC-52 剪贴板',
   'settings.terminal.behavior.osc52Clipboard.desc':
     '允许远程程序（tmux、vim 等）通过 OSC-52 转义序列访问本地剪贴板。',
@@ -1488,14 +1516,21 @@ const zhCN: Messages = {
   'settings.terminal.behavior.linkModifier.meta': 'Cmd / Win',
   'settings.terminal.scrollback.desc': '限制终端行数。设为 0 表示不限制。',
   'settings.terminal.scrollback.rows': '行数 *',
+  'settings.terminal.section.startupCommand': '启动命令',
+  'settings.terminal.startupCommandDelay.label': '启动命令延迟（毫秒）',
+  'settings.terminal.startupCommandDelay.desc': '连接建立后等待多久再发送启动命令；启动命令为多行时，行与行之间也使用该间隔。慢连接可调大。',
   'settings.terminal.keywordHighlight.title': '关键字高亮',
   'settings.terminal.keywordHighlight.resetColors': '重置为默认颜色',
+  'settings.terminal.keywordHighlight.resetDefaults': '把内置规则恢复为默认',
+  'settings.terminal.keywordHighlight.resetBuiltIn': '恢复内置标签与正则',
   'settings.terminal.keywordHighlight.addCustom': '添加自定义规则',
   'settings.terminal.keywordHighlight.editCustom': '编辑规则',
+  'settings.terminal.keywordHighlight.editBuiltIn': '编辑内置规则',
   '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.patternPlaceholder': '每行一个正则（如 \\bdown\\b）',
+  'settings.terminal.keywordHighlight.patternHint': '每行一个正则。匹配忽略大小写，全局匹配。',
   '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',
@@ -1584,6 +1619,7 @@ const zhCN: Messages = {
   'settings.shortcuts.binding.new-workspace': '新建工作区',
   'settings.shortcuts.binding.snippets': '打开代码片段',
   'settings.shortcuts.binding.broadcast': '切换广播模式',
+  'settings.shortcuts.binding.toggle-side-panel': '切换侧边栏',
   'settings.shortcuts.binding.sftp-copy': '复制文件',
   'settings.shortcuts.binding.sftp-cut': '剪切文件',
   'settings.shortcuts.binding.sftp-paste': '粘贴文件',
@@ -1886,6 +1922,18 @@ const zhCN: Messages = {
   'ai.providers.remove': '移除',
   'ai.providers.name': '显示名称',
   'ai.providers.name.placeholder': '例如 我的提供商',
+  'ai.providers.style': '协议风格',
+  'ai.providers.style.anthropic': 'Anthropic 兼容',
+  'ai.providers.style.openai': 'OpenAI 兼容',
+  'ai.providers.style.google': 'Google 兼容',
+  'ai.providers.style.inherited': '默认',
+  'ai.providers.style.help': '决定请求使用哪种 API 格式。当第三方端点的协议与其提供商类型不一致时，可手动覆盖。',
+  'ai.providers.icon.change': '修改图标',
+  'ai.providers.icon.upload': '上传图片',
+  'ai.providers.icon.reset': '恢复默认',
+  'ai.providers.icon.close': '收起',
+  'ai.providers.icon.uploadedNote': '自定义图标（64×64 WebP）',
+  'ai.providers.icon.errorType': '请选择图片文件。',
   'ai.providers.apiKey': 'API Key',
   'ai.providers.apiKey.placeholder': '输入 API Key',
   'ai.providers.apiKey.decrypting': '解密中...',
@@ -1931,13 +1979,20 @@ const zhCN: Messages = {
 
   // AI Claude Code
   'ai.claude.title': 'Claude Code',
-  'ai.claude.description': 'Anthropic 的智能编程助手。使用 claude-agent-acp 进行 ACP 协议流式传输。',
+  'ai.claude.description': 'Anthropic 的智能编程助手。需要系统中已安装 Claude Code CLI。',
   'ai.claude.detecting': '检测中...',
   'ai.claude.detected': '已检测到',
   'ai.claude.notFound': '未找到',
   'ai.claude.path': '路径：',
   'ai.claude.notFoundHint': '在 PATH 中未找到 claude。请安装或在下方指定可执行文件路径。',
   'ai.claude.customPathPlaceholder': '例如 /usr/local/bin/claude',
+  'ai.claude.configSection': '认证与配置（可选）',
+  'ai.claude.configDir': '配置目录',
+  'ai.claude.configDir.placeholder': '~/.claude（留空用默认）',
+  'ai.claude.configDir.hint': '设置 CLAUDE_CONFIG_DIR —— 指向你已运行 `claude` 登录的目录（含 settings.json 和凭据）。',
+  'ai.claude.envVars': '环境变量',
+  'ai.claude.envVars.placeholder': 'ANTHROPIC_BASE_URL=https://...\nANTHROPIC_MODEL=...',
+  'ai.claude.envVars.hint': '每行一个 KEY=VALUE，传给 Claude agent。明文存在本地——API key／凭据建议用上面的「配置目录」（claude 登录），不要放这里。',
   'ai.claude.check': '检查',
 
   // AI GitHub Copilot CLI
@@ -2008,6 +2063,8 @@ const zhCN: Messages = {
   'ai.chat.placeholder': '向 {agent} 发送消息 — @ 引用上下文，/ 使用命令',
   'ai.chat.placeholderDefault': '向 Catty Agent 发送消息...',
   'ai.chat.noModel': '未选择模型',
+  'ai.chat.noProviderModel': '未配置默认模型——前往 设置 → AI → 提供商 设置。',
+  'ai.chat.selectProvider': '选择提供商',
   'ai.chat.recent': '最近',
   'ai.chat.viewAll': '查看全部',
   'ai.chat.untitled': '无标题',
@@ -2063,6 +2120,37 @@ const zhCN: Messages = {
   'ai.safety.blocklist.reset': '恢复默认',
   'ai.safety.blocklist.add': '添加规则',
   'ai.safety.note': '命令黑名单、命令超时和观察者模式通过 MCP Server 层强制执行，对所有 Agent 类型生效。确认模式和最大迭代次数对内置 Agent 完全强制执行；ACP Agent 可能有自己的内部控制。',
+
+  // 统一终端工作区和顶部标签的 tooltip 文案 (issue #954)
+  'terminal.layer.addTerminal': '添加终端',
+  'terminal.layer.switchToSplitView': '切换到分屏视图',
+  'terminal.layer.sftp': '文件传输',
+  'terminal.layer.scripts': '脚本',
+  'terminal.layer.theme': '主题',
+  'terminal.layer.aiChat': 'AI 助手',
+  'terminal.layer.movePanelLeft': '面板移至左侧',
+  'terminal.layer.movePanelRight': '面板移至右侧',
+  'terminal.layer.closePanel': '关闭面板',
+  'topTabs.openQuickSwitcher': '打开快速切换',
+  'topTabs.moreTabs': '更多标签页',
+  'topTabs.aiAssistant': 'AI 助手',
+  'topTabs.toggleTheme': '切换主题',
+  'topTabs.openSettings': '打开设置',
+  'ai.chat.sessionHistory': '会话历史',
+  'ai.chat.attach': '附件',
+  'ai.chat.collapse': '收起',
+  'ai.chat.expand': '展开',
+  'ai.chat.enableAgent': '启用 {name}',
+  'zmodem.waitingForRemote': '等待远端...',
+  'zmodem.uploading': '上传中',
+  'zmodem.downloading': '下载中',
+  'zmodem.cancelTransfer': '取消传输 (Ctrl+C)',
+  'zmodem.overwrite.title': '远端已存在同名文件',
+  'zmodem.overwrite.applyToRest': '应用到其余冲突文件',
+  'zmodem.overwrite.overwrite': '覆盖',
+  'zmodem.overwrite.skip': '跳过',
+  'zmodem.overwrite.cancel': '取消',
+  'settings.shortcuts.resetToDefault': '重置为默认',
 };
 
 export default zhCN;

application/i18n/messages.ts

@@ -1,11 +1,13 @@
 import en, { type Messages } from './locales/en';
 import zhCN from './locales/zh-CN';
+import ru from './locales/ru';
 
 // Keep keys stable; add new locales by adding another import and map entry.
 export { type Messages };
 
 export const MESSAGES_BY_LOCALE: Record<string, Messages> = {
   en,
+  ru,
   'zh-CN': zhCN,
 };
 

application/state/activeTabStore.ts

@@ -1,4 +1,4 @@
-import { useCallback,useSyncExternalStore } from 'react';
+import { useCallback, useSyncExternalStore } from 'react';
 
 // Simple store for active tab that allows fine-grained subscriptions
 type Listener = () => void;
@@ -92,7 +92,11 @@ export const useIsEditorTabActive = (tabId: string): boolean => {
 // Check if terminal layer should be visible
 // Editor tabs are NOT terminal tabs, so exclude them from the visibility condition.
 export const useIsTerminalLayerVisible = (draggingSessionId: string | null) => {
-  const activeTabId = useActiveTabId();
-  const isTerminalTab = activeTabId !== 'vault' && activeTabId !== 'sftp' && !isEditorTabId(activeTabId);
-  return isTerminalTab || !!draggingSessionId;
+  const getSnapshot = useCallback(() => {
+    const activeTabId = activeTabStore.getActiveTabId();
+    const isTerminalTab = activeTabId !== 'vault' && activeTabId !== 'sftp' && !isEditorTabId(activeTabId);
+    return isTerminalTab || !!draggingSessionId;
+  }, [draggingSessionId]);
+
+  return useSyncExternalStore(activeTabStore.subscribe, getSnapshot);
 };

application/state/aiStateEvents.ts

@@ -0,0 +1,20 @@
+/**
+ * Same-window AI-state-changed event plumbing.
+ *
+ * `localStorage` writes only emit `storage` events in *other* windows; the
+ * window doing the write never gets notified. That's a problem for code
+ * that mutates AI storage outside of `useAIState`'s setters (e.g. sync
+ * apply): without a manual nudge, mounted components keep showing stale
+ * AI state until reload.
+ *
+ * Both the dispatcher and `useAIState`'s listener live here so non-React
+ * call sites (sync, IPC handlers, etc.) can fire the event without
+ * pulling in the hook.
+ */
+
+export const AI_STATE_CHANGED_EVENT = 'netcatty:ai-state-changed';
+
+export function emitAIStateChanged(key: string): void {
+  if (typeof window === 'undefined') return;
+  window.dispatchEvent(new CustomEvent<{ key: string }>(AI_STATE_CHANGED_EVENT, { detail: { key } }));
+}

application/state/autoSyncRemoteSchedule.test.ts

@@ -0,0 +1,111 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+
+import {
+  getRuntimeRemoteCheckIntervalMs,
+  shouldRunRuntimeRemoteCheck,
+} from './autoSyncRemoteSchedule';
+
+test("runtime remote checks wait for the startup check to finish", () => {
+  assert.equal(
+    shouldRunRuntimeRemoteCheck({
+      hasAnyConnectedProvider: true,
+      autoSyncEnabled: true,
+      isUnlocked: true,
+      startupRemoteCheckDone: false,
+      isSyncing: false,
+      isSyncRunning: false,
+      remoteCheckInFlight: false,
+      now: 10_000,
+      lastRemoteCheckAt: null,
+      minIntervalMs: 30_000,
+    }),
+    false,
+  );
+});
+
+test("runtime remote checks run immediately after startup gate opens", () => {
+  assert.equal(
+    shouldRunRuntimeRemoteCheck({
+      hasAnyConnectedProvider: true,
+      autoSyncEnabled: true,
+      isUnlocked: true,
+      startupRemoteCheckDone: true,
+      isSyncing: false,
+      isSyncRunning: false,
+      remoteCheckInFlight: false,
+      now: 10_000,
+      lastRemoteCheckAt: null,
+      minIntervalMs: 30_000,
+    }),
+    true,
+  );
+});
+
+test("runtime remote checks respect the minimum interval", () => {
+  const common = {
+    hasAnyConnectedProvider: true,
+    autoSyncEnabled: true,
+    isUnlocked: true,
+    startupRemoteCheckDone: true,
+    isSyncing: false,
+    isSyncRunning: false,
+    remoteCheckInFlight: false,
+    minIntervalMs: 30_000,
+  };
+
+  assert.equal(
+    shouldRunRuntimeRemoteCheck({
+      ...common,
+      now: 35_000,
+      lastRemoteCheckAt: 10_000,
+    }),
+    false,
+  );
+  assert.equal(
+    shouldRunRuntimeRemoteCheck({
+      ...common,
+      now: 40_000,
+      lastRemoteCheckAt: 10_000,
+    }),
+    true,
+  );
+});
+
+test("forced runtime remote checks bypass only the interval gate", () => {
+  const common = {
+    hasAnyConnectedProvider: true,
+    autoSyncEnabled: true,
+    isUnlocked: true,
+    startupRemoteCheckDone: true,
+    isSyncing: false,
+    isSyncRunning: false,
+    remoteCheckInFlight: false,
+    minIntervalMs: 30_000,
+    force: true,
+  };
+
+  assert.equal(
+    shouldRunRuntimeRemoteCheck({
+      ...common,
+      now: 35_000,
+      lastRemoteCheckAt: 10_000,
+    }),
+    true,
+  );
+  assert.equal(
+    shouldRunRuntimeRemoteCheck({
+      ...common,
+      isSyncing: true,
+      now: 35_000,
+      lastRemoteCheckAt: 10_000,
+    }),
+    false,
+  );
+});
+
+test("configured auto-sync intervals map to bounded remote recheck intervals", () => {
+  assert.equal(getRuntimeRemoteCheckIntervalMs(1), 30_000);
+  assert.equal(getRuntimeRemoteCheckIntervalMs(10), 300_000);
+  assert.equal(getRuntimeRemoteCheckIntervalMs(120), 300_000);
+});

application/state/autoSyncRemoteSchedule.ts

@@ -0,0 +1,35 @@
+const MIN_RUNTIME_REMOTE_CHECK_MS = 30_000;
+const MAX_RUNTIME_REMOTE_CHECK_MS = 5 * 60_000;
+
+export function getRuntimeRemoteCheckIntervalMs(autoSyncIntervalMinutes: number): number {
+  const configuredMs = Math.max(1, Number(autoSyncIntervalMinutes) || 1) * 60_000;
+  return Math.max(
+    MIN_RUNTIME_REMOTE_CHECK_MS,
+    Math.min(MAX_RUNTIME_REMOTE_CHECK_MS, Math.floor(configuredMs / 2)),
+  );
+}
+
+export interface RuntimeRemoteCheckInput {
+  hasAnyConnectedProvider: boolean;
+  autoSyncEnabled: boolean;
+  isUnlocked: boolean;
+  startupRemoteCheckDone: boolean;
+  isSyncing: boolean;
+  isSyncRunning: boolean;
+  remoteCheckInFlight: boolean;
+  force?: boolean;
+  now: number;
+  lastRemoteCheckAt: number | null;
+  minIntervalMs: number;
+}
+
+export function shouldRunRuntimeRemoteCheck(input: RuntimeRemoteCheckInput): boolean {
+  if (!input.hasAnyConnectedProvider) return false;
+  if (!input.autoSyncEnabled) return false;
+  if (!input.isUnlocked) return false;
+  if (!input.startupRemoteCheckDone) return false;
+  if (input.isSyncing || input.isSyncRunning || input.remoteCheckInFlight) return false;
+  if (input.force === true) return true;
+  if (input.lastRemoteCheckAt == null) return true;
+  return input.now - input.lastRemoteCheckAt >= input.minIntervalMs;
+}

application/state/editorTabStore.ts

@@ -244,16 +244,3 @@ export const useEditorTab = (id: EditorTabId): EditorTab | undefined => {
   const getSnapshot = useCallback(() => editorTabStore.getTab(id), [id]);
   return useSyncExternalStore(editorTabStore.subscribe, getSnapshot);
 };
-
-export const useEditorDirty = (id: EditorTabId): boolean => {
-  const getSnapshot = useCallback(() => editorTabStore.isDirty(id), [id]);
-  return useSyncExternalStore(editorTabStore.subscribe, getSnapshot);
-};
-
-export const useAnyEditorDirty = (): boolean => {
-  const getSnapshot = useCallback(
-    () => editorTabStore.getTabs().some((t) => t.content !== t.baselineContent),
-    [],
-  );
-  return useSyncExternalStore(editorTabStore.subscribe, getSnapshot);
-};

application/state/resolveCloseIntent.test.ts

@@ -3,33 +3,27 @@ import assert from "node:assert/strict";
 
 import { resolveCloseIntent } from "./resolveCloseIntent.ts";
 
-const baseWorkspace = {
-  id: "w1",
-  focusedSessionId: "s1",
-};
-
+const baseWorkspace = { id: "w1", focusedSessionId: "s1" };
 const baseSession = { id: "s1" };
 
 test("non-workspace tab → closeSingleTab with session id", () => {
-  const result = resolveCloseIntent({
+  const r = resolveCloseIntent({
     activeTabId: "s1",
     workspace: null,
     sessionForTab: baseSession,
-    activeSidePanelTab: null,
     focusIsInsideTerminal: true,
   });
-  assert.deepEqual(result, { kind: "closeSingleTab", sessionId: "s1" });
+  assert.deepEqual(r, { kind: "closeSingleTab", sessionId: "s1" });
 });
 
-test("non-workspace session tab + sidebar open → closeSidePanel (sidebar beats session close)", () => {
+test("non-workspace session tab → closeSingleTab even when focus is outside the terminal", () => {
   const r = resolveCloseIntent({
     activeTabId: "s1",
     workspace: null,
     sessionForTab: { id: "s1" },
-    activeSidePanelTab: "ai",
-    focusIsInsideTerminal: true, // focus IS in terminal, but sidebar wins
+    focusIsInsideTerminal: false,
   });
-  assert.deepEqual(r, { kind: "closeSidePanel" });
+  assert.deepEqual(r, { kind: "closeSingleTab", sessionId: "s1" });
 });
 
 test("vault/sftp tab → noop", () => {
@@ -37,74 +31,37 @@ test("vault/sftp tab → noop", () => {
     activeTabId: "vault",
     workspace: null,
     sessionForTab: null,
-    activeSidePanelTab: null,
     focusIsInsideTerminal: false,
   });
   assert.deepEqual(r, { kind: "noop" });
 });
 
-test("workspace + focus in terminal + sidebar open → closeSidePanel wins (sidebar beats focus)", () => {
+test("workspace + focus in terminal → closeTerminal (side panel no longer intercepts)", () => {
   const r = resolveCloseIntent({
     activeTabId: "w1",
     workspace: baseWorkspace,
     sessionForTab: null,
-    activeSidePanelTab: "ai",
-    focusIsInsideTerminal: true,
-  });
-  assert.deepEqual(r, { kind: "closeSidePanel" });
-});
-
-test("workspace + focus NOT in terminal + sidebar open → closeSidePanel", () => {
-  const r = resolveCloseIntent({
-    activeTabId: "w1",
-    workspace: baseWorkspace,
-    sessionForTab: null,
-    activeSidePanelTab: "sftp",
-    focusIsInsideTerminal: false,
-  });
-  assert.deepEqual(r, { kind: "closeSidePanel" });
-});
-
-test("workspace + sidebar closed + focus in terminal → closeTerminal", () => {
-  const r = resolveCloseIntent({
-    activeTabId: "w1",
-    workspace: baseWorkspace,
-    sessionForTab: null,
-    activeSidePanelTab: null,
     focusIsInsideTerminal: true,
   });
   assert.deepEqual(r, { kind: "closeTerminal", sessionId: "s1" });
 });
 
-test("workspace + sidebar closed + focus NOT in terminal → closeWorkspace", () => {
+test("workspace + focus NOT in terminal → closeWorkspace", () => {
   const r = resolveCloseIntent({
     activeTabId: "w1",
     workspace: baseWorkspace,
     sessionForTab: null,
-    activeSidePanelTab: null,
     focusIsInsideTerminal: false,
   });
   assert.deepEqual(r, { kind: "closeWorkspace", workspaceId: "w1" });
 });
 
-test("workspace with no focused session + sidebar closed → closeWorkspace", () => {
+test("workspace with no focused session → closeWorkspace", () => {
   const r = resolveCloseIntent({
     activeTabId: "w1",
     workspace: { id: "w1", focusedSessionId: undefined },
     sessionForTab: null,
-    activeSidePanelTab: null,
-    focusIsInsideTerminal: true, // even if flag true, no focused id → cannot closeTerminal
+    focusIsInsideTerminal: true,
   });
   assert.deepEqual(r, { kind: "closeWorkspace", workspaceId: "w1" });
 });
-
-test("workspace with no focused session + sidebar open → closeSidePanel", () => {
-  const r = resolveCloseIntent({
-    activeTabId: "w1",
-    workspace: { id: "w1", focusedSessionId: undefined },
-    sessionForTab: null,
-    activeSidePanelTab: "ai",
-    focusIsInsideTerminal: false,
-  });
-  assert.deepEqual(r, { kind: "closeSidePanel" });
-});

application/state/resolveCloseIntent.ts

@@ -1,6 +1,5 @@
 export type CloseIntent =
   | { kind: 'closeTerminal'; sessionId: string }
-  | { kind: 'closeSidePanel' }
   | { kind: 'closeWorkspace'; workspaceId: string }
   | { kind: 'closeSingleTab'; sessionId: string }
   | { kind: 'noop' };
@@ -9,22 +8,14 @@ export interface ResolveCloseInput {
   activeTabId: string | null;
   workspace: { id: string; focusedSessionId?: string } | null;
   sessionForTab: { id: string } | null;
-  activeSidePanelTab: string | null;
   focusIsInsideTerminal: boolean;
 }
 
 export function resolveCloseIntent(input: ResolveCloseInput): CloseIntent {
-  const { activeTabId, workspace, sessionForTab, activeSidePanelTab, focusIsInsideTerminal } = input;
+  const { activeTabId, workspace, sessionForTab, focusIsInsideTerminal } = input;
 
   if (!activeTabId) return { kind: 'noop' };
 
-  // Sidebar always wins — applies to any tab type (workspace, single-session, etc.).
-  // Modals take priority over this but are intercepted upstream in App.tsx before the
-  // hotkey reaches resolveCloseIntent.
-  if (activeSidePanelTab !== null) {
-    return { kind: 'closeSidePanel' };
-  }
-
   if (sessionForTab && !workspace) {
     return { kind: 'closeSingleTab', sessionId: sessionForTab.id };
   }

application/state/resolveSidePanelToggleIntent.test.ts

@@ -0,0 +1,19 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+import { resolveSidePanelToggleIntent } from "./resolveSidePanelToggleIntent.ts";
+
+test("open: closed with a remembered tab → open that tab", () => {
+  const r = resolveSidePanelToggleIntent({ isOpen: false, lastTab: "sftp", fallbackTab: "scripts" });
+  assert.deepEqual(r, { kind: "open", tab: "sftp" });
+});
+
+test("open: closed with no memory → open the fallback tab", () => {
+  const r = resolveSidePanelToggleIntent({ isOpen: false, lastTab: null, fallbackTab: "scripts" });
+  assert.deepEqual(r, { kind: "open", tab: "scripts" });
+});
+
+test("close: already open → close", () => {
+  const r = resolveSidePanelToggleIntent({ isOpen: true, lastTab: "theme", fallbackTab: "sftp" });
+  assert.deepEqual(r, { kind: "close" });
+});

application/state/resolveSidePanelToggleIntent.ts

@@ -0,0 +1,18 @@
+export type SidePanelToggleIntent<T extends string> =
+  | { kind: 'close' }
+  | { kind: 'open'; tab: T };
+
+/**
+ * Decide what the "toggle side panel" shortcut should do.
+ * - If a panel is open → close it.
+ * - If closed → reopen the last-shown sub-panel for the tab, falling back to
+ *   `fallbackTab` when the tab has no remembered panel.
+ */
+export function resolveSidePanelToggleIntent<T extends string>(input: {
+  isOpen: boolean;
+  lastTab: T | null;
+  fallbackTab: T;
+}): SidePanelToggleIntent<T> {
+  if (input.isOpen) return { kind: 'close' };
+  return { kind: 'open', tab: input.lastTab ?? input.fallbackTab };
+}

application/state/resolveTerminalSessionExitIntent.test.ts

@@ -0,0 +1,32 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+import { resolveTerminalSessionExitIntent } from "./resolveTerminalSessionExitIntent.ts";
+
+test("normal backend exited events close the session tab", () => {
+  assert.deepEqual(
+    resolveTerminalSessionExitIntent({ reason: "exited", exitCode: 0 }),
+    { kind: "closeSession" },
+  );
+});
+
+test("backend timeout events keep the tab and mark it disconnected", () => {
+  assert.deepEqual(
+    resolveTerminalSessionExitIntent({ reason: "timeout", error: "idle timeout" }),
+    { kind: "markDisconnected" },
+  );
+});
+
+test("backend error events keep the tab and mark it disconnected", () => {
+  assert.deepEqual(
+    resolveTerminalSessionExitIntent({ reason: "error", error: "connection reset" }),
+    { kind: "markDisconnected" },
+  );
+});
+
+test("backend closed events keep the tab and mark it disconnected", () => {
+  assert.deepEqual(
+    resolveTerminalSessionExitIntent({ reason: "closed", exitCode: 0 }),
+    { kind: "markDisconnected" },
+  );
+});

application/state/resolveTerminalSessionExitIntent.ts

@@ -0,0 +1,22 @@
+export type TerminalSessionExitEvent = {
+  exitCode?: number;
+  signal?: number;
+  error?: string;
+  reason?: "exited" | "error" | "timeout" | "closed";
+};
+
+export type TerminalSessionExitIntent =
+  | { kind: "closeSession" }
+  | { kind: "markDisconnected" };
+
+export function resolveTerminalSessionExitIntent(
+  evt: TerminalSessionExitEvent,
+): TerminalSessionExitIntent {
+  if (evt.reason === "exited") {
+    return { kind: "closeSession" };
+  }
+
+  // Timeouts, transport errors, and channel closes should keep the tab visible
+  // so the user can inspect output and reconnect.
+  return { kind: "markDisconnected" };
+}

application/state/sftp/bookmarkHelpers.ts

@@ -0,0 +1,23 @@
+import type { SftpBookmark } from "../../../domain/models";
+
+const ROOT_PATH_RE = /^[A-Za-z]:[\\/]?$/;
+
+export function getSftpBookmarkLabel(path: string): string {
+  const trimmed = path.trim();
+  if (trimmed === "/" || ROOT_PATH_RE.test(trimmed)) return trimmed;
+  return trimmed.split(/[\\/]/).filter(Boolean).pop() || trimmed;
+}
+
+export function createSftpBookmark(
+  path: string,
+  options: { global?: boolean; idPrefix?: string } = {},
+): SftpBookmark {
+  const global = options.global === true;
+  const idPrefix = options.idPrefix ?? (global ? "gbm" : "bm");
+  return {
+    id: `${idPrefix}-${Date.now()}-${Math.random().toString(36).slice(2, 6)}`,
+    path,
+    label: getSftpBookmarkLabel(path),
+    ...(global ? { global: true } : {}),
+  };
+}

application/state/sftp/globalSftpBookmarks.ts

@@ -0,0 +1,45 @@
+import type { SftpBookmark } from "../../../domain/models";
+import { STORAGE_KEY_SFTP_GLOBAL_BOOKMARKS } from "../../../infrastructure/config/storageKeys";
+import { localStorageAdapter } from "../../../infrastructure/persistence/localStorageAdapter";
+
+type Listener = () => void;
+
+const listeners = new Set<Listener>();
+
+let snapshot: SftpBookmark[] =
+  localStorageAdapter.read<SftpBookmark[]>(STORAGE_KEY_SFTP_GLOBAL_BOOKMARKS) ?? [];
+
+export function subscribeGlobalSftpBookmarks(listener: Listener) {
+  listeners.add(listener);
+  return () => {
+    listeners.delete(listener);
+  };
+}
+
+export function getGlobalSftpBookmarksSnapshot() {
+  return snapshot;
+}
+
+export function rehydrateGlobalSftpBookmarks() {
+  snapshot = localStorageAdapter.read<SftpBookmark[]>(STORAGE_KEY_SFTP_GLOBAL_BOOKMARKS) ?? [];
+  for (const listener of listeners) listener();
+}
+
+export function setGlobalSftpBookmarks(
+  next: SftpBookmark[] | ((prev: SftpBookmark[]) => SftpBookmark[]),
+) {
+  snapshot = typeof next === "function" ? next(snapshot) : next;
+  localStorageAdapter.write(STORAGE_KEY_SFTP_GLOBAL_BOOKMARKS, snapshot);
+  for (const listener of listeners) listener();
+  if (typeof window !== "undefined") {
+    window.dispatchEvent(new CustomEvent("sftp-bookmarks-changed"));
+  }
+}
+
+if (typeof window !== "undefined") {
+  window.addEventListener("storage", (event) => {
+    if (event.key === STORAGE_KEY_SFTP_GLOBAL_BOOKMARKS) {
+      rehydrateGlobalSftpBookmarks();
+    }
+  });
+}

application/state/sftp/useSftpHostCredentials.ts

@@ -113,6 +113,9 @@ export const buildSftpHostCredentials = ({
         identityFilePaths: jumpKeyAuth.identityFilePaths,
         keepaliveInterval: hopKeepalive.interval,
         keepaliveCountMax: hopKeepalive.countMax,
+        legacyAlgorithms: jumpHost.legacyAlgorithms,
+        skipEcdsaHostKey: jumpHost.skipEcdsaHostKey,
+        algorithmOverrides: jumpHost.algorithms,
       };
     });
   }
@@ -159,6 +162,13 @@ export const buildSftpHostCredentials = ({
     identityFilePaths: keyAuth.identityFilePaths,
     keepaliveInterval: targetKeepalive.interval,
     keepaliveCountMax: targetKeepalive.countMax,
+    // Algorithm settings — must reach the SFTP bridge or hosts that need
+    // legacy mode / the ECDSA skip / advanced overrides would still hit
+    // the original negotiation failure when opening their SFTP pane,
+    // even though the terminal session works.
+    legacyAlgorithms: host.legacyAlgorithms,
+    skipEcdsaHostKey: host.skipEcdsaHostKey,
+    algorithmOverrides: host.algorithms,
   };
 };
 

application/state/sftp/utils.test.ts

@@ -0,0 +1,11 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+import { isConcreteTransferTargetPath } from "./utils";
+
+test("concrete transfer target paths exclude temporary placeholders", () => {
+  assert.equal(isConcreteTransferTargetPath({ targetPath: "/Users/alice/Downloads/report.pdf" }), true);
+  assert.equal(isConcreteTransferTargetPath({ targetPath: "C:\\Users\\alice\\Downloads\\report.pdf" }), true);
+  assert.equal(isConcreteTransferTargetPath({ targetPath: "(temp)" }), false);
+  assert.equal(isConcreteTransferTargetPath({ targetPath: "   " }), false);
+});

application/state/sftp/utils.ts

@@ -1,4 +1,4 @@
-import { SftpFileEntry } from "../../../domain/models";
+import { SftpFileEntry, TransferTask } from "../../../domain/models";
 
 export const formatFileSize = (bytes: number): string => {
   if (bytes === 0) return "--";
@@ -76,6 +76,11 @@ export const getParentPath = (path: string): string => {
   return result;
 };
 
+export const isConcreteTransferTargetPath = (task: Pick<TransferTask, "targetPath">): boolean => {
+  const targetPath = task.targetPath.trim();
+  return targetPath.length > 0 && targetPath !== "(temp)";
+};
+
 export const getFileName = (path: string): string => {
   const parts = path.split(/[\\/]/).filter(Boolean);
   return parts[parts.length - 1] || "";

application/state/useAIState.ts

@@ -15,6 +15,7 @@ import {
   STORAGE_KEY_AI_SESSIONS,
   STORAGE_KEY_AI_ACTIVE_SESSION_MAP,
   STORAGE_KEY_AI_AGENT_MODEL_MAP,
+  STORAGE_KEY_AI_AGENT_PROVIDER_MAP,
   STORAGE_KEY_AI_WEB_SEARCH,
 } from '../../infrastructure/config/storageKeys';
 import type {
@@ -61,17 +62,14 @@ function getAIBridge() {
   return (window as unknown as { netcatty?: AIBridge }).netcatty;
 }
 
-const AI_STATE_CHANGED_EVENT = 'netcatty:ai-state-changed';
+import { AI_STATE_CHANGED_EVENT, emitAIStateChanged } from './aiStateEvents';
+
 const AI_STATE_CHANGED_DRAFTS_BY_SCOPE = 'netcatty:ai-drafts-by-scope';
 const AI_STATE_CHANGED_PANEL_VIEW_BY_SCOPE = 'netcatty:ai-panel-view-by-scope';
 
 type DraftsByScope = Partial<Record<string, AIDraft>>;
 type PanelViewByScope = Partial<Record<string, AIPanelView>>;
 
-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;
@@ -326,6 +324,20 @@ export function useAIState() {
   const [agentModelMap, setAgentModelMapRaw] = useState<Record<string, string>>(() =>
     localStorageAdapter.read<Record<string, string>>(STORAGE_KEY_AI_AGENT_MODEL_MAP) ?? {}
   );
+  // Per-agent provider override: remembers which provider config each agent
+  // should bind to. Falls back to the global `activeProviderId` when an agent
+  // has no entry. Used so that e.g. Catty Agent can stay on DeepSeek while
+  // a Claude/Codex run continues on its existing provider.
+  const [agentProviderMap, setAgentProviderMapRaw] = useState<Record<string, string>>(() =>
+    localStorageAdapter.read<Record<string, string>>(STORAGE_KEY_AI_AGENT_PROVIDER_MAP) ?? {}
+  );
+  // Mirror for non-functional reads inside removeProvider — needed to know
+  // which agents were bound to the deleted provider so we can also drop
+  // their saved model ids (those ids belonged to the now-missing provider).
+  const agentProviderMapRef = useRef(agentProviderMap);
+  useEffect(() => {
+    agentProviderMapRef.current = agentProviderMap;
+  }, [agentProviderMap]);
 
   // ── Web Search Config ──
   const [webSearchConfig, setWebSearchConfigRaw] = useState<WebSearchConfig | null>(() =>
@@ -413,6 +425,21 @@ export function useAIState() {
     });
   }, []);
 
+  const setAgentProvider = useCallback((agentId: string, providerId: string) => {
+    setAgentProviderMapRaw(prev => {
+      // Empty string clears the per-agent override and lets the agent fall
+      // back to the global `activeProviderId`.
+      const next = { ...prev };
+      if (providerId) {
+        next[agentId] = providerId;
+      } else {
+        delete next[agentId];
+      }
+      localStorageAdapter.write(STORAGE_KEY_AI_AGENT_PROVIDER_MAP, next);
+      return next;
+    });
+  }, []);
+
   const setWebSearchConfig = useCallback((config: WebSearchConfig | null) => {
     setWebSearchConfigRaw(config);
     if (config) {
@@ -600,6 +627,9 @@ export function useAIState() {
           case STORAGE_KEY_AI_AGENT_MODEL_MAP:
             setAgentModelMapRaw(localStorageAdapter.read<Record<string, string>>(STORAGE_KEY_AI_AGENT_MODEL_MAP) ?? {});
             break;
+          case STORAGE_KEY_AI_AGENT_PROVIDER_MAP:
+            setAgentProviderMapRaw(localStorageAdapter.read<Record<string, string>>(STORAGE_KEY_AI_AGENT_PROVIDER_MAP) ?? {});
+            break;
           case STORAGE_KEY_AI_ACTIVE_SESSION_MAP: {
             const nextActiveSessionIdMap =
               localStorageAdapter.read<Record<string, string | null>>(STORAGE_KEY_AI_ACTIVE_SESSION_MAP) ?? {};
@@ -1080,6 +1110,41 @@ export function useAIState() {
       }
       return prevId;
     });
+    // Drop per-agent overrides pointing at this provider plus the saved
+    // model id for those agents — the id belonged to the now-missing
+    // provider, so feeding it to the fallback provider would just send
+    // a model name that target doesn't recognize.
+    const orphanedAgents = Object.keys(agentProviderMapRef.current)
+      .filter((agentId) => agentProviderMapRef.current[agentId] === id);
+    if (orphanedAgents.length > 0) {
+      setAgentProviderMapRaw(prev => {
+        const next: Record<string, string> = {};
+        let changed = false;
+        for (const agentId of Object.keys(prev)) {
+          if (prev[agentId] === id) {
+            changed = true;
+          } else {
+            next[agentId] = prev[agentId];
+          }
+        }
+        if (!changed) return prev;
+        localStorageAdapter.write(STORAGE_KEY_AI_AGENT_PROVIDER_MAP, next);
+        return next;
+      });
+      setAgentModelMapRaw(prev => {
+        let changed = false;
+        const next: Record<string, string> = { ...prev };
+        for (const agentId of orphanedAgents) {
+          if (agentId in next) {
+            delete next[agentId];
+            changed = true;
+          }
+        }
+        if (!changed) return prev;
+        localStorageAdapter.write(STORAGE_KEY_AI_AGENT_MODEL_MAP, next);
+        return next;
+      });
+    }
   }, [setProviders]);
 
   // ── Computed ──
@@ -1123,6 +1188,9 @@ export function useAIState() {
     // Per-agent model memory
     agentModelMap,
     setAgentModel,
+    // Per-agent provider override (falls back to activeProviderId when unset)
+    agentProviderMap,
+    setAgentProvider,
 
     // Web search
     webSearchConfig,

application/state/useAgentDiscovery.ts

@@ -52,14 +52,19 @@ export function useAgentDiscovery(
         );
         if (!match) return ea;
 
-        // Check if args or ACP config differ
+        // Check if args, ACP config, or Claude's resolved system path differ
         const currentArgs = JSON.stringify(ea.args || []);
         const newArgs = JSON.stringify(match.args);
         const acpChanged = ea.acpCommand !== match.acpCommand
           || JSON.stringify(ea.acpArgs || []) !== JSON.stringify(match.acpArgs || []);
-        if (currentArgs !== newArgs || acpChanged) {
+        const env = match.command === 'claude'
+          ? { ...(ea.env ?? {}), CLAUDE_CODE_EXECUTABLE: match.path }
+          : ea.env;
+        const envChanged = match.command === 'claude'
+          && ea.env?.CLAUDE_CODE_EXECUTABLE !== match.path;
+        if (currentArgs !== newArgs || acpChanged || envChanged) {
           changed = true;
-          return { ...ea, args: match.args, acpCommand: match.acpCommand, acpArgs: match.acpArgs };
+          return { ...ea, args: match.args, acpCommand: match.acpCommand, acpArgs: match.acpArgs, ...(env ? { env } : {}) };
         }
         return ea;
       });
@@ -86,6 +91,7 @@ export function useAgentDiscovery(
         enabled: true,
         acpCommand: agent.acpCommand,
         acpArgs: agent.acpArgs,
+        ...(agent.command === 'claude' ? { env: { CLAUDE_CODE_EXECUTABLE: agent.path } } : {}),
       };
     },
     [],

application/state/useAutoSync.ts

@@ -16,14 +16,15 @@ import {
   findSyncPayloadEncryptedCredentialPaths,
 } from '../../domain/credentials';
 import { isProviderReadyForSync, type CloudProvider, type SyncPayload } from '../../domain/sync';
+import { mergeSyncPayloads } from '../../domain/syncMerge';
 import {
   SYNCABLE_SETTING_STORAGE_KEYS,
   collectSyncableSettings,
+  getEffectivePortForwardingRulesForSync,
   hasMeaningfulCloudSyncData,
 } from '../syncPayload';
 import { readInterruptedVaultApply } from '../localVaultBackups';
 import {
-  STORAGE_KEY_PORT_FORWARDING,
   STORAGE_KEY_VAULT_RESTORE_IN_PROGRESS_UNTIL,
 } from '../../infrastructure/config/storageKeys';
 import {
@@ -31,6 +32,10 @@ import {
   localStorageAdapter,
 } from '../../infrastructure/persistence/localStorageAdapter';
 import { notify } from '../notification';
+import {
+  getRuntimeRemoteCheckIntervalMs,
+  shouldRunRuntimeRemoteCheck,
+} from './autoSyncRemoteSchedule';
 
 interface AutoSyncConfig {
   // Data to sync
@@ -95,6 +100,11 @@ interface SyncNowOptions {
   trigger?: SyncTrigger;
 }
 
+interface RemoteVersionCheckOptions {
+  force?: boolean;
+  notifyOnFailure?: boolean;
+}
+
 export const useAutoSync = (config: AutoSyncConfig) => {
   const { t } = useI18n();
   const sync = useCloudSync();
@@ -156,21 +166,6 @@ export const useAutoSync = (config: AutoSyncConfig) => {
   }, []);
 
   const getSyncSnapshot = useCallback(() => {
-    let effectivePFRules = config.portForwardingRules;
-    if (!effectivePFRules || effectivePFRules.length === 0) {
-      const stored = localStorageAdapter.read<SyncPayload['portForwardingRules']>(
-        STORAGE_KEY_PORT_FORWARDING,
-      );
-      if (stored && Array.isArray(stored) && stored.length > 0) {
-        effectivePFRules = stored.map((rule) => ({
-          ...rule,
-          status: 'inactive' as const,
-          error: undefined,
-          lastUsedAt: undefined,
-        }));
-      }
-    }
-
     return {
       hosts: config.hosts,
       keys: config.keys,
@@ -179,7 +174,7 @@ export const useAutoSync = (config: AutoSyncConfig) => {
       snippets: config.snippets,
       customGroups: config.customGroups,
       snippetPackages: config.snippetPackages,
-      portForwardingRules: effectivePFRules,
+      portForwardingRules: getEffectivePortForwardingRulesForSync(config.portForwardingRules),
       groupConfigs: config.groupConfigs,
     };
   }, [
@@ -417,17 +412,20 @@ export const useAutoSync = (config: AutoSyncConfig) => {
   // windows but does NOT serialize same-window re-entry, so this
   // in-flight guard closes that gap at the top of the call.
   const checkRemoteInFlightRef = useRef(false);
+  const lastRuntimeRemoteCheckAtRef = useRef<number | null>(null);
 
   // Check remote version and pull if newer (on startup)
-  const checkRemoteVersion = useCallback(async () => {
+  const checkRemoteVersion = useCallback(async (options?: RemoteVersionCheckOptions) => {
     if (checkRemoteInFlightRef.current) {
       return;
     }
+    const force = options?.force === true;
+    const notifyOnFailure = options?.notifyOnFailure !== false;
     const state = manager.getState();
     const hasProvider = Object.values(state.providers).some((provider) => isProviderReadyForSync(provider));
     const unlocked = state.securityState === 'UNLOCKED';
 
-    if (!hasProvider || !unlocked || hasCheckedRemoteRef.current || startupReadyRef.current === false) {
+    if (!hasProvider || !unlocked || (!force && hasCheckedRemoteRef.current) || startupReadyRef.current === false) {
       return;
     }
 
@@ -509,7 +507,6 @@ export const useAutoSync = (config: AutoSyncConfig) => {
         return;
       }
 
-      const { mergeSyncPayloads } = await import('../../domain/syncMerge');
       const mergeResult = mergeSyncPayloads(base, localPayload, remotePayload);
 
       // Apply merged payload to local state BEFORE committing. If the apply
@@ -563,14 +560,16 @@ export const useAutoSync = (config: AutoSyncConfig) => {
       }
     } catch (error) {
       console.error('[AutoSync] Failed to check remote version:', error);
-      // Surface a degraded-sync hint to the user rather than silently
-      // opening the auto-sync gate. Auto-sync will still retry on next
-      // data change (see finally block), but without this toast the user
-      // has no visible signal that startup reconciliation failed.
-      notify.error(
-        t('sync.autoSync.inspectFailedMessage'),
-        t('sync.autoSync.inspectFailedTitle'),
-      );
+      if (notifyOnFailure) {
+        // Surface a degraded-sync hint to the user rather than silently
+        // opening the auto-sync gate. Auto-sync will still retry on next
+        // data change (see finally block), but without this toast the user
+        // has no visible signal that startup reconciliation failed.
+        notify.error(
+          t('sync.autoSync.inspectFailedMessage'),
+          t('sync.autoSync.inspectFailedTitle'),
+        );
+      }
       // Leave hasCheckedRemoteRef=false so the next startup (or the next
       // provider/unlock transition) can retry.
     } finally {
@@ -741,12 +740,86 @@ export const useAutoSync = (config: AutoSyncConfig) => {
       if (timerId) clearTimeout(timerId);
     };
   }, [sync.hasAnyConnectedProvider, sync.isUnlocked, config.startupReady, checkRemoteVersion]);
+
+  const runRuntimeRemoteCheck = useCallback(async (options?: { force?: boolean }) => {
+    const now = Date.now();
+    const minIntervalMs = getRuntimeRemoteCheckIntervalMs(sync.autoSyncInterval);
+    if (!shouldRunRuntimeRemoteCheck({
+      hasAnyConnectedProvider: sync.hasAnyConnectedProvider,
+      autoSyncEnabled: sync.autoSyncEnabled,
+      isUnlocked: sync.isUnlocked,
+      startupRemoteCheckDone: remoteCheckDoneRef.current,
+      isSyncing: sync.isSyncing,
+      isSyncRunning: isSyncRunningRef.current,
+      remoteCheckInFlight: checkRemoteInFlightRef.current,
+      force: options?.force === true,
+      now,
+      lastRemoteCheckAt: lastRuntimeRemoteCheckAtRef.current,
+      minIntervalMs,
+    })) {
+      return;
+    }
+
+    lastRuntimeRemoteCheckAtRef.current = now;
+    await checkRemoteVersion({ force: true, notifyOnFailure: false });
+  }, [
+    checkRemoteVersion,
+    sync.autoSyncEnabled,
+    sync.autoSyncInterval,
+    sync.hasAnyConnectedProvider,
+    sync.isSyncing,
+    sync.isUnlocked,
+  ]);
+
+  // Keep checking the cloud while the app is open. This closes the gap where
+  // another device uploads changes after our startup inspection but before
+  // this device edits anything locally.
+  useEffect(() => {
+    if (!sync.hasAnyConnectedProvider || !sync.autoSyncEnabled || !sync.isUnlocked) {
+      return;
+    }
+
+    const intervalMs = getRuntimeRemoteCheckIntervalMs(sync.autoSyncInterval);
+    const timerId = window.setInterval(() => {
+      void runRuntimeRemoteCheck();
+    }, intervalMs);
+
+    return () => window.clearInterval(timerId);
+  }, [
+    runRuntimeRemoteCheck,
+    sync.autoSyncEnabled,
+    sync.autoSyncInterval,
+    sync.hasAnyConnectedProvider,
+    sync.isUnlocked,
+  ]);
+
+  // Also re-check when the user returns to the app or the network comes back.
+  useEffect(() => {
+    if (typeof window === 'undefined' || typeof document === 'undefined') return;
+
+    const handleVisibilityChange = () => {
+      if (document.visibilityState === 'visible') {
+        void runRuntimeRemoteCheck({ force: true });
+      }
+    };
+    const handleOnline = () => {
+      void runRuntimeRemoteCheck({ force: true });
+    };
+
+    document.addEventListener('visibilitychange', handleVisibilityChange);
+    window.addEventListener('online', handleOnline);
+    return () => {
+      document.removeEventListener('visibilitychange', handleVisibilityChange);
+      window.removeEventListener('online', handleOnline);
+    };
+  }, [runRuntimeRemoteCheck]);
   
   // Reset check flags when provider disconnects
   useEffect(() => {
     if (!sync.hasAnyConnectedProvider) {
       hasCheckedRemoteRef.current = false;
       remoteCheckDoneRef.current = false;
+      lastRuntimeRemoteCheckAtRef.current = null;
     }
   }, [sync.hasAnyConnectedProvider]);
 

application/state/useGlobalHotkeys.ts

@@ -1,41 +1,5 @@
-import { useCallback, useEffect, useRef } from 'react';
 import { KeyBinding, matchesKeyBinding } from '../../domain/models';
 
-interface HotkeyActions {
-  // Tab management
-  switchToTab: (tabIndex: number) => void;
-  nextTab: () => void;
-  prevTab: () => void;
-  closeTab: () => void;
-  newTab: () => void;
-  
-  // Navigation
-  openHosts: () => void;
-  openSftp: () => void;
-  quickSwitch: () => void;
-  newWorkspace: () => void;
-  commandPalette: () => void;
-  portForwarding: () => void;
-  snippets: () => void;
-  
-  // Terminal actions (handled per-terminal)
-  copy: () => void;
-  paste: () => void;
-  selectAll: () => void;
-  clearBuffer: () => void;
-  searchTerminal: () => void;
-  
-  // Workspace/split actions
-  splitHorizontal: () => void;
-  splitVertical: () => void;
-  moveFocus: (direction: 'up' | 'down' | 'left' | 'right') => void;
-  
-  // App features
-  broadcast: () => void;
-  openLocal: () => void;
-  openSettings: () => void;
-}
-
 // Check if keyboard event matches our app-level shortcuts
 // Returns the matched binding action or null
 export const checkAppShortcut = (
@@ -87,163 +51,3 @@ export const getTerminalPassthroughActions = (): Set<string> => {
     'searchTerminal',
   ]);
 };
-
-interface UseGlobalHotkeysOptions {
-  hotkeyScheme: 'disabled' | 'mac' | 'pc';
-  keyBindings: KeyBinding[];
-  actions: Partial<HotkeyActions>;
-  orderedTabs: string[];
-  sessions: { id: string }[];
-  workspaces: { id: string }[];
-  isSettingsOpen?: boolean;
-}
-
-export const useGlobalHotkeys = ({
-  hotkeyScheme,
-  keyBindings,
-  actions,
-  orderedTabs,
-  sessions,
-  workspaces,
-  isSettingsOpen = false,
-}: UseGlobalHotkeysOptions) => {
-  const actionsRef = useRef(actions);
-  actionsRef.current = actions;
-
-  const orderedTabsRef = useRef(orderedTabs);
-  orderedTabsRef.current = orderedTabs;
-
-  const sessionsRef = useRef(sessions);
-  sessionsRef.current = sessions;
-
-  const workspacesRef = useRef(workspaces);
-  workspacesRef.current = workspaces;
-
-  const handleGlobalKeyDown = useCallback((e: KeyboardEvent) => {
-    if (hotkeyScheme === 'disabled') return;
-    if (isSettingsOpen) return; // Don't handle hotkeys when settings is open
-
-    const isMac = hotkeyScheme === 'mac';
-    const appLevelActions = getAppLevelActions();
-
-    // Check if this is an app-level shortcut
-    const matched = checkAppShortcut(e, keyBindings, isMac);
-    if (!matched) return;
-
-    const { action, binding: _binding } = matched;
-
-    // Only handle app-level actions here
-    // Terminal-level actions are handled by the terminal itself
-    if (!appLevelActions.has(action)) return;
-
-    e.preventDefault();
-    e.stopPropagation();
-
-    const currentActions = actionsRef.current;
-    switch (action) {
-      case 'switchToTab': {
-        const num = parseInt(e.key, 10);
-        if (num >= 1 && num <= 9) {
-          currentActions.switchToTab?.(num);
-        }
-        break;
-      }
-      case 'nextTab':
-        currentActions.nextTab?.();
-        break;
-      case 'prevTab':
-        currentActions.prevTab?.();
-        break;
-      case 'closeTab':
-        currentActions.closeTab?.();
-        break;
-      case 'newTab':
-        currentActions.newTab?.();
-        break;
-      case 'openHosts':
-        currentActions.openHosts?.();
-        break;
-      case 'openSftp':
-        currentActions.openSftp?.();
-        break;
-      case 'openLocal':
-        currentActions.openLocal?.();
-        break;
-      case 'quickSwitch':
-        currentActions.quickSwitch?.();
-        break;
-      case 'newWorkspace':
-        currentActions.newWorkspace?.();
-        break;
-      case 'commandPalette':
-        currentActions.commandPalette?.();
-        break;
-      case 'portForwarding':
-        currentActions.portForwarding?.();
-        break;
-      case 'snippets':
-        currentActions.snippets?.();
-        break;
-      case 'splitHorizontal':
-        currentActions.splitHorizontal?.();
-        break;
-      case 'splitVertical':
-        currentActions.splitVertical?.();
-        break;
-      case 'moveFocus': {
-        // Determine direction from arrow key
-        const key = e.key;
-        if (key === 'ArrowUp') currentActions.moveFocus?.('up');
-        else if (key === 'ArrowDown') currentActions.moveFocus?.('down');
-        else if (key === 'ArrowLeft') currentActions.moveFocus?.('left');
-        else if (key === 'ArrowRight') currentActions.moveFocus?.('right');
-        break;
-      }
-      case 'broadcast':
-        currentActions.broadcast?.();
-        break;
-      case 'openSettings':
-        currentActions.openSettings?.();
-        break;
-    }
-  }, [hotkeyScheme, keyBindings, isSettingsOpen]);
-
-  useEffect(() => {
-    // Use capture phase to intercept before xterm
-    window.addEventListener('keydown', handleGlobalKeyDown, true);
-    return () => window.removeEventListener('keydown', handleGlobalKeyDown, true);
-  }, [handleGlobalKeyDown]);
-};
-
-// Helper to create key event handler for xterm's attachCustomKeyEventHandler
-// Returns false to let xterm handle the key, true to prevent xterm from handling
-export const createXtermKeyHandler = (
-  keyBindings: KeyBinding[],
-  isMac: boolean,
-  onTerminalAction?: (action: string, e: KeyboardEvent) => void
-) => {
-  const appLevelActions = getAppLevelActions();
-  const terminalActions = getTerminalPassthroughActions();
-
-  return (e: KeyboardEvent): boolean => {
-    const matched = checkAppShortcut(e, keyBindings, isMac);
-    if (!matched) return true; // Let xterm handle it
-
-    const { action } = matched;
-
-    // App-level actions: prevent xterm from handling, let global handler take over
-    if (appLevelActions.has(action)) {
-      return false; // Don't let xterm handle, will bubble to global handler
-    }
-
-    // Terminal-level actions: handle here and prevent default
-    if (terminalActions.has(action)) {
-      e.preventDefault();
-      e.stopPropagation();
-      onTerminalAction?.(action, e);
-      return false;
-    }
-
-    return true; // Let xterm handle other keys
-  };
-};

application/state/useKeychainBackend.ts

@@ -17,6 +17,13 @@ export const useKeychainBackend = () => {
     timeout?: number;
     enableKeyboardInteractive?: boolean;
     sessionId?: string;
+    // Algorithm settings — let the keychain "export public key" flow honor
+    // the same per-host SSH algorithm config the terminal uses, so a host
+    // that needs the ECDSA skip / legacy mode / advanced overrides works
+    // here too.
+    legacyAlgorithms?: boolean;
+    skipEcdsaHostKey?: boolean;
+    algorithmOverrides?: import("../../domain/models").HostAlgorithmOverrides;
   }) => {
     const bridge = netcattyBridge.get();
     if (!bridge?.execCommand) throw new Error("execCommand unavailable");

application/state/useSessionState.ts

@@ -9,6 +9,7 @@ FocusDirection,
 getNextFocusSessionId,
 insertPaneIntoWorkspace,
 pruneWorkspaceNode,
+reorderWorkspaceFocusSessionOrder,
 SplitDirection,
 SplitHint,
 updateWorkspaceSplitSizes,
@@ -759,6 +760,27 @@ export const useSessionState = () => {
     }));
   }, []);
 
+  const reorderWorkspaceSessions = useCallback((
+    workspaceId: string,
+    draggedSessionId: string,
+    targetSessionId: string,
+    position: 'before' | 'after' = 'before',
+  ) => {
+    setWorkspaces(prev => prev.map(ws => {
+      if (ws.id !== workspaceId) return ws;
+      return {
+        ...ws,
+        focusSessionOrder: reorderWorkspaceFocusSessionOrder(
+          ws.root,
+          ws.focusSessionOrder,
+          draggedSessionId,
+          targetSessionId,
+          position,
+        ),
+      };
+    }));
+  }, []);
+
   // Move focus between panes in a workspace
   const moveFocusInWorkspace = useCallback((workspaceId: string, direction: FocusDirection): boolean => {
     const workspace = workspaces.find(w => w.id === workspaceId);
@@ -1049,6 +1071,7 @@ export const useSessionState = () => {
     splitSession,
     toggleWorkspaceViewMode,
     setWorkspaceFocusedSession,
+    reorderWorkspaceSessions,
     moveFocusInWorkspace,
     runSnippet,
     orphanSessions,

application/state/useSettingsState.ts

@@ -1,10 +1,12 @@
 import { useCallback, useEffect, useLayoutEffect, useMemo, useRef, useState, type SetStateAction } from 'react';
-import { SyncConfig, TerminalTheme, TerminalSettings, HotkeyScheme, CustomKeyBindings, DEFAULT_KEY_BINDINGS, KeyBinding, UILanguage, SessionLogFormat, normalizeTerminalSettings } from '../../domain/models';
+import { SyncConfig, TerminalSettings, HotkeyScheme, CustomKeyBindings, DEFAULT_KEY_BINDINGS, KeyBinding, UILanguage, SessionLogFormat, normalizeTerminalSettings } from '../../domain/models';
 import {
   STORAGE_KEY_COLOR,
   STORAGE_KEY_SYNC,
   STORAGE_KEY_TERM_THEME,
   STORAGE_KEY_TERM_FOLLOW_APP_THEME,
+  STORAGE_KEY_TERM_THEME_DARK,
+  STORAGE_KEY_TERM_THEME_LIGHT,
   STORAGE_KEY_THEME,
   STORAGE_KEY_TERM_FONT_FAMILY,
   STORAGE_KEY_TERM_FONT_SIZE,
@@ -49,7 +51,7 @@ import {
   shouldApplyIncomingCustomKeyBindingsRecord,
   updateCustomKeyBinding as updateCustomKeyBindingRecord,
 } from '../../domain/customKeyBindings';
-import { applyCustomAccentToTerminalTheme, getTerminalThemeForUiTheme } from '../../domain/terminalAppearance';
+import { applyCustomAccentToTerminalTheme, resolveFollowedTerminalThemeId, TERMINAL_THEME_AUTO } from '../../domain/terminalAppearance';
 import { customThemeStore, useCustomThemes } from '../state/customThemeStore';
 import { DEFAULT_FONT_SIZE, isDeprecatedPrimaryFontId } from '../../infrastructure/config/fonts';
 import { DARK_UI_THEMES, LIGHT_UI_THEMES, UiThemeTokens, getUiThemeById } from '../../infrastructure/config/uiThemes';
@@ -254,6 +256,12 @@ export const useSettingsState = () => {
     const isUpgrade = !!localStorageAdapter.readString(STORAGE_KEY_TERM_THEME);
     return !isUpgrade;
   });
+  const [terminalThemeDarkId, setTerminalThemeDarkId] = useState<string>(
+    () => localStorageAdapter.readString(STORAGE_KEY_TERM_THEME_DARK) || TERMINAL_THEME_AUTO,
+  );
+  const [terminalThemeLightId, setTerminalThemeLightId] = useState<string>(
+    () => localStorageAdapter.readString(STORAGE_KEY_TERM_THEME_LIGHT) || TERMINAL_THEME_AUTO,
+  );
   const [terminalFontFamilyId, setTerminalFontFamilyId] = useState<string>(() => {
     const stored = localStorageAdapter.readString(STORAGE_KEY_TERM_FONT_FAMILY);
     return migrateIncomingTerminalFontId(stored) ?? DEFAULT_FONT_FAMILY;
@@ -536,6 +544,10 @@ export const useSettingsState = () => {
     // Terminal
     const storedTermTheme = readStoredString(STORAGE_KEY_TERM_THEME);
     if (storedTermTheme) setTerminalThemeId(storedTermTheme);
+    const storedTermThemeDark = readStoredString(STORAGE_KEY_TERM_THEME_DARK);
+    if (storedTermThemeDark) setTerminalThemeDarkId(storedTermThemeDark);
+    const storedTermThemeLight = readStoredString(STORAGE_KEY_TERM_THEME_LIGHT);
+    if (storedTermThemeLight) setTerminalThemeLightId(storedTermThemeLight);
     const storedTermFont = readStoredString(STORAGE_KEY_TERM_FONT_FAMILY);
     const migratedTermFont = migrateIncomingTerminalFontId(storedTermFont);
     if (migratedTermFont) setTerminalFontFamilyId(migratedTermFont);
@@ -669,6 +681,12 @@ export const useSettingsState = () => {
       if (key === STORAGE_KEY_TERM_THEME && typeof value === 'string') {
         setTerminalThemeId(value);
       }
+      if (key === STORAGE_KEY_TERM_THEME_DARK && typeof value === 'string') {
+        setTerminalThemeDarkId(value);
+      }
+      if (key === STORAGE_KEY_TERM_THEME_LIGHT && typeof value === 'string') {
+        setTerminalThemeLightId(value);
+      }
       if (key === STORAGE_KEY_TERM_FOLLOW_APP_THEME) {
         const next = value === true || value === 'true';
         setFollowAppTerminalThemeState((prev) => (prev === next ? prev : next));
@@ -862,6 +880,15 @@ export const useSettingsState = () => {
           setTerminalThemeId(e.newValue);
         }
       }
+      // Sync per-mode follow terminal themes from other windows
+      if (e.key === STORAGE_KEY_TERM_THEME_DARK && e.newValue) {
+        const next = e.newValue;
+        setTerminalThemeDarkId((prev) => (prev === next ? prev : next));
+      }
+      if (e.key === STORAGE_KEY_TERM_THEME_LIGHT && e.newValue) {
+        const next = e.newValue;
+        setTerminalThemeLightId((prev) => (prev === next ? prev : next));
+      }
       // Sync follow-app-theme toggle from other windows
       if (e.key === STORAGE_KEY_TERM_FOLLOW_APP_THEME && e.newValue) {
         const next = e.newValue === 'true';
@@ -1011,6 +1038,18 @@ export const useSettingsState = () => {
     notifySettingsChanged(STORAGE_KEY_TERM_FOLLOW_APP_THEME, String(followAppTerminalTheme));
   }, [followAppTerminalTheme, notifySettingsChanged]);
 
+  useEffect(() => {
+    localStorageAdapter.writeString(STORAGE_KEY_TERM_THEME_DARK, terminalThemeDarkId);
+    if (!persistMountedRef.current) return;
+    notifySettingsChanged(STORAGE_KEY_TERM_THEME_DARK, terminalThemeDarkId);
+  }, [terminalThemeDarkId, notifySettingsChanged]);
+
+  useEffect(() => {
+    localStorageAdapter.writeString(STORAGE_KEY_TERM_THEME_LIGHT, terminalThemeLightId);
+    if (!persistMountedRef.current) return;
+    notifySettingsChanged(STORAGE_KEY_TERM_THEME_LIGHT, terminalThemeLightId);
+  }, [terminalThemeLightId, notifySettingsChanged]);
+
   useEffect(() => {
     localStorageAdapter.writeString(STORAGE_KEY_TERM_FONT_FAMILY, terminalFontFamilyId);
     if (!persistMountedRef.current) return;
@@ -1293,25 +1332,32 @@ export const useSettingsState = () => {
   const customThemes = useCustomThemes();
 
   const currentTerminalTheme = useMemo(() => {
-    let baseTheme: TerminalTheme;
-    // When "Follow Application Theme" is enabled, pick the terminal theme
-    // whose background matches the active UI theme preset.
+    // When "Follow Application Theme" is enabled, honor the per-mode override
+    // (or auto-match the active UI theme preset when set to auto).
     if (followAppTerminalTheme) {
-      const activeUiThemeId = resolvedTheme === 'dark' ? darkUiThemeId : lightUiThemeId;
-      const mapped = getTerminalThemeForUiTheme(activeUiThemeId);
-      if (mapped) {
-        const found = TERMINAL_THEMES.find(t => t.id === mapped);
-        if (found) {
-          baseTheme = found;
-          return applyCustomAccentToTerminalTheme(baseTheme, accentMode, customAccent);
-        }
+      const followedId = resolveFollowedTerminalThemeId({
+        resolvedTheme,
+        terminalThemeDarkId,
+        terminalThemeLightId,
+        lightUiThemeId,
+        darkUiThemeId,
+        fallbackThemeId: terminalThemeId,
+      });
+      const followed = TERMINAL_THEMES.find(t => t.id === followedId)
+        || customThemes.find(t => t.id === followedId);
+      if (followed) {
+        return applyCustomAccentToTerminalTheme(followed, accentMode, customAccent);
       }
+      // Explicit override pointing at a deleted theme: fall through to the
+      // manual theme below.
     }
-    baseTheme = TERMINAL_THEMES.find(t => t.id === terminalThemeId)
+    const baseTheme = TERMINAL_THEMES.find(t => t.id === terminalThemeId)
       || customThemes.find(t => t.id === terminalThemeId)
       || TERMINAL_THEMES[0];
     return applyCustomAccentToTerminalTheme(baseTheme, accentMode, customAccent);
-  }, [terminalThemeId, customThemes, followAppTerminalTheme, resolvedTheme, lightUiThemeId, darkUiThemeId, accentMode, customAccent]);
+  }, [terminalThemeId, terminalThemeDarkId, terminalThemeLightId, customThemes,
+      followAppTerminalTheme, resolvedTheme, lightUiThemeId, darkUiThemeId,
+      accentMode, customAccent]);
 
   const updateTerminalSetting = useCallback(<K extends keyof TerminalSettings>(
     key: K,
@@ -1348,6 +1394,10 @@ export const useSettingsState = () => {
     setTerminalThemeId,
     followAppTerminalTheme,
     setFollowAppTerminalTheme: setFollowAppTerminalThemeState,
+    terminalThemeDarkId,
+    setTerminalThemeDarkId,
+    terminalThemeLightId,
+    setTerminalThemeLightId,
     currentTerminalTheme,
     terminalFontFamilyId,
     setTerminalFontFamilyId,

application/state/useSftpBackend.ts

@@ -150,6 +150,16 @@ export const useSftpBackend = () => {
     return bridge.getHomeDir();
   }, []);
 
+  const listDrives = useCallback(async () => {
+    return await netcattyBridge.get()?.listDrives?.() ?? [];
+  }, []);
+
+  const openPath = useCallback(async (path: string) => {
+    const bridge = netcattyBridge.get();
+    if (!bridge?.openPath) throw new Error("openPath unavailable");
+    return bridge.openPath(path);
+  }, []);
+
   const startStreamTransfer = useCallback(
     async (
       options: Parameters<NonNullable<NetcattyBridge["startStreamTransfer"]>>[0],
@@ -268,6 +278,8 @@ export const useSftpBackend = () => {
     mkdirLocal,
     statLocal,
     getHomeDir,
+    listDrives,
+    openPath,
 
     startStreamTransfer,
     cancelTransfer,

application/state/useTerminalBackend.ts

@@ -73,6 +73,11 @@ export const useTerminalBackend = () => {
     bridge?.resizeSession?.(sessionId, cols, rows);
   }, []);
 
+  const setSessionFlowPaused = useCallback((sessionId: string, paused: boolean) => {
+    const bridge = netcattyBridge.get();
+    bridge?.setSessionFlowPaused?.(sessionId, paused);
+  }, []);
+
   const closeSession = useCallback((sessionId: string) => {
     const bridge = netcattyBridge.get();
     bridge?.closeSession?.(sessionId);
@@ -208,6 +213,7 @@ export const useTerminalBackend = () => {
       getServerStats,
       writeToSession,
       resizeSession,
+      setSessionFlowPaused,
       closeSession,
       setSessionEncoding,
       onSessionData,
@@ -240,6 +246,7 @@ export const useTerminalBackend = () => {
       getServerStats,
       writeToSession,
       resizeSession,
+      setSessionFlowPaused,
       closeSession,
       setSessionEncoding,
       onSessionData,

application/state/useVaultState.ts

@@ -1,6 +1,7 @@
 import { useCallback, useEffect, useRef, useState } from "react";
 import { normalizeDistroId, sanitizeHost } from "../../domain/host";
 import { sanitizeGroupConfig } from "../../domain/groupConfig";
+import { normalizeKnownHosts } from "../../domain/knownHosts";
 import {
   ConnectionLog,
   GroupConfig,
@@ -505,11 +506,22 @@ export const useVaultState = () => {
         if (savedGroups) setCustomGroups(savedGroups);
         if (savedSnippetPackages) setSnippetPackages(savedSnippetPackages);
 
-        // Load known hosts
+        // Load known hosts. Records imported from `~/.ssh/known_hosts` and
+        // records saved by older builds may be missing the `fingerprint` /
+        // `keyType` fields the verifier compares against; backfill them now
+        // so the next SSH connect can match without falling into the brittle
+        // re-derivation path that caused the repeated "fingerprint changed"
+        // warnings in #972.
         const savedKnownHosts = localStorageAdapter.read<KnownHost[]>(
           STORAGE_KEY_KNOWN_HOSTS,
         );
-        if (savedKnownHosts) setKnownHosts(savedKnownHosts);
+        if (savedKnownHosts) {
+          const normalized = normalizeKnownHosts(savedKnownHosts);
+          setKnownHosts(normalized);
+          if (normalized !== savedKnownHosts) {
+            localStorageAdapter.write(STORAGE_KEY_KNOWN_HOSTS, normalized);
+          }
+        }
 
         // Load shell history
         const savedShellHistory = localStorageAdapter.read<ShellHistoryEntry[]>(
@@ -638,7 +650,7 @@ export const useVaultState = () => {
 
       if (key === STORAGE_KEY_KNOWN_HOSTS) {
         const next = safeParse<KnownHost[]>(event.newValue) ?? [];
-        setKnownHosts(next);
+        setKnownHosts(normalizeKnownHosts(next));
         return;
       }
 

application/syncPayload.test.ts

@@ -120,6 +120,7 @@ test("buildSyncPayload includes AI configuration settings", () => {
   localStorage.setItem(storageKeys.STORAGE_KEY_AI_COMMAND_TIMEOUT, "120");
   localStorage.setItem(storageKeys.STORAGE_KEY_AI_MAX_ITERATIONS, "10");
   localStorage.setItem(storageKeys.STORAGE_KEY_AI_AGENT_MODEL_MAP, JSON.stringify({ codex: "gpt-test" }));
+  localStorage.setItem(storageKeys.STORAGE_KEY_AI_AGENT_PROVIDER_MAP, JSON.stringify({ catty: "openai-main" }));
   localStorage.setItem(storageKeys.STORAGE_KEY_AI_WEB_SEARCH, JSON.stringify(webSearch));
 
   const payload = buildSyncPayload(vault([]));
@@ -135,6 +136,7 @@ test("buildSyncPayload includes AI configuration settings", () => {
     commandTimeout: 120,
     maxIterations: 10,
     agentModelMap: { codex: "gpt-test" },
+    agentProviderMap: { catty: "openai-main" },
     webSearchConfig: webSearch,
   });
 });
@@ -201,6 +203,7 @@ test("applySyncPayload restores AI configuration settings", async () => {
         commandTimeout: 30,
         maxIterations: 5,
         agentModelMap: { claude: "claude-test" },
+        agentProviderMap: { catty: "anthropic-main" },
         webSearchConfig: webSearch,
       },
     },
@@ -219,9 +222,104 @@ test("applySyncPayload restores AI configuration settings", async () => {
   assert.equal(localStorage.getItem(storageKeys.STORAGE_KEY_AI_COMMAND_TIMEOUT), "30");
   assert.equal(localStorage.getItem(storageKeys.STORAGE_KEY_AI_MAX_ITERATIONS), "5");
   assert.deepEqual(JSON.parse(localStorage.getItem(storageKeys.STORAGE_KEY_AI_AGENT_MODEL_MAP)!), { claude: "claude-test" });
+  assert.deepEqual(JSON.parse(localStorage.getItem(storageKeys.STORAGE_KEY_AI_AGENT_PROVIDER_MAP)!), { catty: "anthropic-main" });
   assert.deepEqual(JSON.parse(localStorage.getItem(storageKeys.STORAGE_KEY_AI_WEB_SEARCH)!), webSearch);
 });
 
+test("applySyncPayload dispatches a same-window AI-state-changed event so the open chat panel rehydrates", async () => {
+  // Without this nudge, the apply path writes to localStorage but
+  // `useAIState` (listening for `storage` events) never sees the changes
+  // in the calling window — mounted UI keeps showing pre-sync data.
+  const dispatched: Array<{ type: string; detail: unknown }> = [];
+  const fakeWindow = {
+    addEventListener: () => {},
+    removeEventListener: () => {},
+    dispatchEvent(event: Event) {
+      dispatched.push({
+        type: event.type,
+        detail: (event as CustomEvent).detail,
+      });
+      return true;
+    },
+  };
+  Object.defineProperty(globalThis, "window", { value: fakeWindow, configurable: true });
+  try {
+    localStorage.setItem(storageKeys.STORAGE_KEY_AI_AGENT_PROVIDER_MAP, JSON.stringify({ catty: "deepseek-local" }));
+    localStorage.setItem(storageKeys.STORAGE_KEY_AI_AGENT_MODEL_MAP, JSON.stringify({ catty: "deepseek-v4-flash" }));
+
+    const payload: SyncPayload = {
+      hosts: [],
+      keys: [],
+      identities: [],
+      snippets: [],
+      customGroups: [],
+      settings: {
+        ai: {
+          providers: [{ id: "openai-main", providerId: "openai", name: "OpenAI", enabled: true }],
+        },
+      },
+      syncedAt: 1,
+    } as SyncPayload;
+
+    await applySyncPayload(payload, { importVaultData: () => {} });
+
+    const events = dispatched.filter((e) => e.type === "netcatty:ai-state-changed");
+    const keys = events.map((e) => (e.detail as { key?: string })?.key);
+    assert.ok(keys.includes(storageKeys.STORAGE_KEY_AI_PROVIDERS), "providers nudge");
+    assert.ok(keys.includes(storageKeys.STORAGE_KEY_AI_AGENT_PROVIDER_MAP), "agentProviderMap nudge");
+    assert.ok(keys.includes(storageKeys.STORAGE_KEY_AI_AGENT_MODEL_MAP), "agentModelMap nudge");
+  } finally {
+    delete (globalThis as { window?: unknown }).window;
+  }
+});
+
+test("applySyncPayload prunes per-agent bindings that reference providers absent from the synced set", async () => {
+  // Local state has Catty bound to a provider the incoming sync no longer
+  // ships — both the per-agent provider override and the saved model should
+  // be cleared so we don't dispatch a ghost provider id (or its now-orphan
+  // model name) to the wrong endpoint.
+  localStorage.setItem(storageKeys.STORAGE_KEY_AI_AGENT_PROVIDER_MAP, JSON.stringify({
+    catty: "deepseek-local",
+    codex: "openai-main",
+  }));
+  localStorage.setItem(storageKeys.STORAGE_KEY_AI_AGENT_MODEL_MAP, JSON.stringify({
+    catty: "deepseek-v4-flash",
+    codex: "gpt-test",
+  }));
+
+  const syncedProviders = [
+    { id: "openai-main", providerId: "openai", name: "OpenAI", enabled: true },
+  ];
+
+  const payload: SyncPayload = {
+    hosts: [],
+    keys: [],
+    identities: [],
+    snippets: [],
+    customGroups: [],
+    settings: {
+      ai: {
+        providers: syncedProviders,
+        // Intentionally omit agentProviderMap — exercises the reconcile path.
+      },
+    },
+    syncedAt: 1,
+  } as SyncPayload;
+
+  await applySyncPayload(payload, { importVaultData: () => {} });
+
+  assert.deepEqual(
+    JSON.parse(localStorage.getItem(storageKeys.STORAGE_KEY_AI_AGENT_PROVIDER_MAP)!),
+    { codex: "openai-main" },
+  );
+  // Catty's saved model belonged to the now-missing deepseek-local — drop it.
+  // Codex's binding stays, so its saved model stays.
+  assert.deepEqual(
+    JSON.parse(localStorage.getItem(storageKeys.STORAGE_KEY_AI_AGENT_MODEL_MAP)!),
+    { codex: "gpt-test" },
+  );
+});
+
 test("applySyncPayload preserves local externalAgents and ignores legacy payload field", async () => {
   const localAgents = [
     { id: "codex", name: "Codex", command: "/usr/local/bin/codex", enabled: true },

application/syncPayload.ts

@@ -18,7 +18,12 @@ import type {
   Snippet,
   SSHKey,
 } from '../domain/models';
-import type { SyncPayload } from '../domain/sync';
+import {
+  CLOUD_SYNC_PAYLOAD_ENTITY_KEYS,
+  SYNC_PAYLOAD_ENTITY_KEYS,
+  hasSyncPayloadEntityData,
+  type SyncPayload,
+} from '../domain/sync';
 import {
   nextCustomKeyBindingsSyncVersion,
   parseCustomKeyBindingsStorageRecord,
@@ -26,7 +31,8 @@ import {
 } from '../domain/customKeyBindings';
 import { isEncryptedCredentialPlaceholder } from '../domain/credentials';
 import { localStorageAdapter } from '../infrastructure/persistence/localStorageAdapter';
-import { rehydrateGlobalBookmarks } from '../components/sftp/hooks/useGlobalSftpBookmarks';
+import { emitAIStateChanged } from './state/aiStateEvents';
+import { rehydrateGlobalSftpBookmarks } from './state/sftp/globalSftpBookmarks';
 import {
   STORAGE_KEY_THEME,
   STORAGE_KEY_UI_THEME_LIGHT,
@@ -38,6 +44,8 @@ import {
   STORAGE_KEY_CUSTOM_CSS,
   STORAGE_KEY_TERM_THEME,
   STORAGE_KEY_TERM_FOLLOW_APP_THEME,
+  STORAGE_KEY_TERM_THEME_DARK,
+  STORAGE_KEY_TERM_THEME_LIGHT,
   STORAGE_KEY_TERM_FONT_FAMILY,
   STORAGE_KEY_TERM_FONT_SIZE,
   STORAGE_KEY_TERM_SETTINGS,
@@ -66,7 +74,9 @@ import {
   STORAGE_KEY_AI_COMMAND_TIMEOUT,
   STORAGE_KEY_AI_MAX_ITERATIONS,
   STORAGE_KEY_AI_AGENT_MODEL_MAP,
+  STORAGE_KEY_AI_AGENT_PROVIDER_MAP,
   STORAGE_KEY_AI_WEB_SEARCH,
+  STORAGE_KEY_PORT_FORWARDING,
 } from '../infrastructure/config/storageKeys';
 
 // ---------------------------------------------------------------------------
@@ -94,19 +104,7 @@ export interface SyncableVaultData {
  * protecting or syncing.
  */
 export function hasMeaningfulSyncData(payload: SyncPayload): boolean {
-  const hasEntities =
-    (payload.hosts?.length ?? 0) > 0 ||
-    (payload.keys?.length ?? 0) > 0 ||
-    (payload.snippets?.length ?? 0) > 0 ||
-    (payload.identities?.length ?? 0) > 0 ||
-    (payload.proxyProfiles?.length ?? 0) > 0 ||
-    (payload.customGroups?.length ?? 0) > 0 ||
-    (payload.snippetPackages?.length ?? 0) > 0 ||
-    (payload.portForwardingRules?.length ?? 0) > 0 ||
-    (payload.knownHosts?.length ?? 0) > 0 ||
-    (payload.groupConfigs?.length ?? 0) > 0;
-
-  if (hasEntities) return true;
+  if (hasSyncPayloadEntityData(payload, SYNC_PAYLOAD_ENTITY_KEYS)) return true;
 
   return Boolean(
     payload.settings && Object.values(payload.settings).some((value) => value !== undefined),
@@ -118,24 +116,39 @@ export function hasMeaningfulSyncData(payload: SyncPayload): boolean {
  * Local-only trust records are intentionally ignored.
  */
 export function hasMeaningfulCloudSyncData(payload: SyncPayload): boolean {
-  const hasEntities =
-    (payload.hosts?.length ?? 0) > 0 ||
-    (payload.keys?.length ?? 0) > 0 ||
-    (payload.snippets?.length ?? 0) > 0 ||
-    (payload.identities?.length ?? 0) > 0 ||
-    (payload.proxyProfiles?.length ?? 0) > 0 ||
-    (payload.customGroups?.length ?? 0) > 0 ||
-    (payload.snippetPackages?.length ?? 0) > 0 ||
-    (payload.portForwardingRules?.length ?? 0) > 0 ||
-    (payload.groupConfigs?.length ?? 0) > 0;
-
-  if (hasEntities) return true;
+  if (hasSyncPayloadEntityData(payload, CLOUD_SYNC_PAYLOAD_ENTITY_KEYS)) return true;
 
   return Boolean(
     payload.settings && Object.values(payload.settings).some((value) => value !== undefined),
   );
 }
 
+export function sanitizePortForwardingRulesForSync(
+  rules: PortForwardingRule[] | undefined,
+): PortForwardingRule[] | undefined {
+  if (!rules) return rules;
+  return rules.map((rule) => ({
+    ...rule,
+    status: 'inactive' as const,
+    error: undefined,
+    lastUsedAt: undefined,
+  }));
+}
+
+export function getEffectivePortForwardingRulesForSync(
+  rules: PortForwardingRule[] | undefined,
+): PortForwardingRule[] | undefined {
+  let effectiveRules = rules;
+  if (!effectiveRules || effectiveRules.length === 0) {
+    const stored = localStorageAdapter.read<PortForwardingRule[]>(STORAGE_KEY_PORT_FORWARDING);
+    if (Array.isArray(stored) && stored.length > 0) {
+      effectiveRules = stored;
+    }
+  }
+
+  return sanitizePortForwardingRulesForSync(effectiveRules);
+}
+
 /** Callbacks used by `applySyncPayload` to import data into local state. */
 interface SyncPayloadImporters {
   /** Import vault data. Cloud sync excludes local-only known hosts by default. */
@@ -152,15 +165,16 @@ interface SyncPayloadImporters {
 
 /** Terminal settings keys that are safe to sync (platform-agnostic). */
 const SYNCABLE_TERMINAL_KEYS = [
+  'startupCommandDelayMs',
   'scrollback', 'drawBoldInBrightColors', 'terminalEmulationType',
   'fontLigatures', 'fontWeight', 'fontWeightBold', 'fallbackFont',
   'linePadding', 'cursorShape', 'cursorBlink', 'minimumContrastRatio',
-  'altAsMeta', 'scrollOnInput', 'scrollOnOutput', 'scrollOnKeyPress', 'scrollOnPaste',
+  'altAsMeta', 'optionArrowWordJump', 'scrollOnInput', 'scrollOnOutput', 'scrollOnKeyPress', 'scrollOnPaste',
   'smoothScrolling',
   'rightClickBehavior', 'copyOnSelect', 'middleClickPaste', 'wordSeparators',
   'linkModifier', 'keywordHighlightEnabled', 'keywordHighlightRules',
   'keepaliveInterval', 'keepaliveCountMax', 'disableBracketedPaste', 'clearWipesScrollback',
-  'preserveSelectionOnInput', 'osc52Clipboard', 'showServerStats',
+  'preserveSelectionOnInput', 'forcePromptNewLine', 'osc52Clipboard', 'showServerStats',
   'serverStatsRefreshInterval', 'rendererType',
   'autocompleteEnabled', 'autocompleteGhostText', 'autocompletePopupMenu',
   'autocompleteDebounceMs', 'autocompleteMinChars', 'autocompleteMaxSuggestions',
@@ -177,6 +191,8 @@ export const SYNCABLE_SETTING_STORAGE_KEYS = [
   STORAGE_KEY_CUSTOM_CSS,
   STORAGE_KEY_TERM_THEME,
   STORAGE_KEY_TERM_FOLLOW_APP_THEME,
+  STORAGE_KEY_TERM_THEME_DARK,
+  STORAGE_KEY_TERM_THEME_LIGHT,
   STORAGE_KEY_TERM_FONT_FAMILY,
   STORAGE_KEY_TERM_FONT_SIZE,
   STORAGE_KEY_TERM_SETTINGS,
@@ -205,6 +221,7 @@ export const SYNCABLE_SETTING_STORAGE_KEYS = [
   STORAGE_KEY_AI_COMMAND_TIMEOUT,
   STORAGE_KEY_AI_MAX_ITERATIONS,
   STORAGE_KEY_AI_AGENT_MODEL_MAP,
+  STORAGE_KEY_AI_AGENT_PROVIDER_MAP,
   STORAGE_KEY_AI_WEB_SEARCH,
 ] as const;
 
@@ -300,6 +317,10 @@ export function collectSyncableSettings(): SyncPayload['settings'] {
   if (followAppTermTheme === 'true' || followAppTermTheme === 'false') {
     settings.followAppTerminalTheme = followAppTermTheme === 'true';
   }
+  const termThemeDark = localStorageAdapter.readString(STORAGE_KEY_TERM_THEME_DARK);
+  if (termThemeDark) settings.terminalThemeDark = termThemeDark;
+  const termThemeLight = localStorageAdapter.readString(STORAGE_KEY_TERM_THEME_LIGHT);
+  if (termThemeLight) settings.terminalThemeLight = termThemeLight;
   const termFont = localStorageAdapter.readString(STORAGE_KEY_TERM_FONT_FAMILY);
   if (termFont) settings.terminalFontFamily = termFont;
   const termSize = localStorageAdapter.readNumber(STORAGE_KEY_TERM_FONT_SIZE);
@@ -396,6 +417,8 @@ export function collectSyncableSettings(): SyncPayload['settings'] {
   if (maxIterations != null && Number.isFinite(maxIterations)) ai.maxIterations = maxIterations;
   const agentModelMap = readRecordSetting<Record<string, string>>(STORAGE_KEY_AI_AGENT_MODEL_MAP);
   if (agentModelMap) ai.agentModelMap = agentModelMap;
+  const agentProviderMap = readRecordSetting<Record<string, string>>(STORAGE_KEY_AI_AGENT_PROVIDER_MAP);
+  if (agentProviderMap) ai.agentProviderMap = agentProviderMap;
   const webSearchConfig = readRecordSetting(STORAGE_KEY_AI_WEB_SEARCH);
   if (webSearchConfig) ai.webSearchConfig = stripDeviceBoundApiKey(webSearchConfig);
   if (Object.keys(ai).length > 0) settings.ai = ai;
@@ -423,6 +446,8 @@ function applySyncableSettings(settings: NonNullable<SyncPayload['settings']>):
   if (settings.followAppTerminalTheme != null) {
     localStorageAdapter.writeString(STORAGE_KEY_TERM_FOLLOW_APP_THEME, String(settings.followAppTerminalTheme));
   }
+  if (settings.terminalThemeDark != null) localStorageAdapter.writeString(STORAGE_KEY_TERM_THEME_DARK, settings.terminalThemeDark);
+  if (settings.terminalThemeLight != null) localStorageAdapter.writeString(STORAGE_KEY_TERM_THEME_LIGHT, settings.terminalThemeLight);
   if (settings.terminalFontFamily != null) localStorageAdapter.writeString(STORAGE_KEY_TERM_FONT_FAMILY, settings.terminalFontFamily);
   if (settings.terminalFontSize != null) localStorageAdapter.writeString(STORAGE_KEY_TERM_FONT_SIZE, String(settings.terminalFontSize));
 
@@ -513,6 +538,7 @@ function applySyncableSettings(settings: NonNullable<SyncPayload['settings']>):
     if (ai.commandTimeout != null) localStorageAdapter.writeNumber(STORAGE_KEY_AI_COMMAND_TIMEOUT, ai.commandTimeout);
     if (ai.maxIterations != null) localStorageAdapter.writeNumber(STORAGE_KEY_AI_MAX_ITERATIONS, ai.maxIterations);
     if (ai.agentModelMap != null) localStorageAdapter.write(STORAGE_KEY_AI_AGENT_MODEL_MAP, ai.agentModelMap);
+    if (ai.agentProviderMap != null) localStorageAdapter.write(STORAGE_KEY_AI_AGENT_PROVIDER_MAP, ai.agentProviderMap);
     if (ai.webSearchConfig !== undefined) {
       if (ai.webSearchConfig === null) {
         localStorageAdapter.remove(STORAGE_KEY_AI_WEB_SEARCH);
@@ -523,6 +549,83 @@ function applySyncableSettings(settings: NonNullable<SyncPayload['settings']>):
         );
       }
     }
+    // After all AI writes, reconcile per-agent bindings against the final
+    // provider list. Sync payloads can land with a new `providers` set but
+    // no `agentProviderMap`, or with a stale `agentProviderMap` that
+    // points at ids the synced provider set doesn't include — either way
+    // we'd leak overrides bound to ghost providers. Mirrors the same
+    // cleanup `removeProvider` does for explicit user deletes.
+    pruneOrphanPerAgentBindings();
+    // Nudge same-window AI state listeners. localStorage writes only fire
+    // `storage` events in *other* windows; without this nudge the open
+    // chat panel keeps showing pre-sync providers/bindings until reload.
+    notifyAIStateAfterSync(ai);
+  }
+}
+
+function notifyAIStateAfterSync(ai: NonNullable<SyncPayload['settings']>['ai']): void {
+  if (!ai) return;
+  // Every AI storage key that `applySyncableSettings` may have touched
+  // gets a same-window nudge. `useAIState` listens for these and refreshes
+  // the corresponding React state by re-reading localStorage.
+  const touched: Array<string> = [];
+  if (ai.providers != null) touched.push(STORAGE_KEY_AI_PROVIDERS);
+  if (ai.activeProviderId != null) touched.push(STORAGE_KEY_AI_ACTIVE_PROVIDER);
+  if (ai.activeModelId != null) touched.push(STORAGE_KEY_AI_ACTIVE_MODEL);
+  if (ai.globalPermissionMode != null) touched.push(STORAGE_KEY_AI_PERMISSION_MODE);
+  if (ai.toolIntegrationMode != null) touched.push(STORAGE_KEY_AI_TOOL_INTEGRATION_MODE);
+  if (ai.hostPermissions != null) touched.push(STORAGE_KEY_AI_HOST_PERMISSIONS);
+  if (ai.defaultAgentId != null) touched.push(STORAGE_KEY_AI_DEFAULT_AGENT);
+  if (ai.commandBlocklist != null) touched.push(STORAGE_KEY_AI_COMMAND_BLOCKLIST);
+  if (ai.commandTimeout != null) touched.push(STORAGE_KEY_AI_COMMAND_TIMEOUT);
+  if (ai.maxIterations != null) touched.push(STORAGE_KEY_AI_MAX_ITERATIONS);
+  if (ai.agentModelMap != null) touched.push(STORAGE_KEY_AI_AGENT_MODEL_MAP);
+  // agentProviderMap is *always* potentially mutated because the reconcile
+  // step may have pruned it even if the payload didn't ship one.
+  touched.push(STORAGE_KEY_AI_AGENT_PROVIDER_MAP);
+  // The reconcile may also have pruned saved models alongside provider
+  // bindings, so always nudge the model map too.
+  if (!touched.includes(STORAGE_KEY_AI_AGENT_MODEL_MAP)) {
+    touched.push(STORAGE_KEY_AI_AGENT_MODEL_MAP);
+  }
+  if (ai.webSearchConfig !== undefined) touched.push(STORAGE_KEY_AI_WEB_SEARCH);
+  for (const key of touched) {
+    emitAIStateChanged(key);
+  }
+}
+
+function pruneOrphanPerAgentBindings(): void {
+  const providers = localStorageAdapter.read<Array<{ id?: string }>>(STORAGE_KEY_AI_PROVIDERS) ?? [];
+  const validIds = new Set(
+    providers
+      .map((p) => p?.id)
+      .filter((id): id is string => typeof id === 'string' && id.length > 0),
+  );
+  const providerMap = localStorageAdapter.read<Record<string, string>>(STORAGE_KEY_AI_AGENT_PROVIDER_MAP) ?? {};
+  const modelMap = localStorageAdapter.read<Record<string, string>>(STORAGE_KEY_AI_AGENT_MODEL_MAP) ?? {};
+  let providerChanged = false;
+  let modelChanged = false;
+  const nextProviderMap: Record<string, string> = {};
+  const nextModelMap: Record<string, string> = { ...modelMap };
+  for (const agentId of Object.keys(providerMap)) {
+    const providerId = providerMap[agentId];
+    if (providerId && validIds.has(providerId)) {
+      nextProviderMap[agentId] = providerId;
+    } else {
+      providerChanged = true;
+      // Drop the saved model too — that id belonged to the now-missing
+      // provider and isn't trustworthy against any other binding.
+      if (agentId in nextModelMap) {
+        delete nextModelMap[agentId];
+        modelChanged = true;
+      }
+    }
+  }
+  if (providerChanged) {
+    localStorageAdapter.write(STORAGE_KEY_AI_AGENT_PROVIDER_MAP, nextProviderMap);
+  }
+  if (modelChanged) {
+    localStorageAdapter.write(STORAGE_KEY_AI_AGENT_MODEL_MAP, nextModelMap);
   }
 }
 
@@ -550,7 +653,7 @@ export function buildSyncPayload(
     customGroups: vault.customGroups,
     snippetPackages: vault.snippetPackages,
     groupConfigs: vault.groupConfigs,
-    portForwardingRules,
+    portForwardingRules: sanitizePortForwardingRulesForSync(portForwardingRules),
     settings: collectSyncableSettings(),
     syncedAt: Date.now(),
   };
@@ -611,7 +714,7 @@ function applyPayload(
     if (payload.settings) {
       applySyncableSettings(payload.settings);
       // Rehydrate in-memory bookmark snapshot after localStorage was updated
-      if (payload.settings.sftpGlobalBookmarks != null) rehydrateGlobalBookmarks();
+      if (payload.settings.sftpGlobalBookmarks != null) rehydrateGlobalSftpBookmarks();
       importers.onSettingsApplied?.();
     }
   });

components/AIChatSidePanel.tsx

@@ -38,6 +38,7 @@ import { matchesManagedAgentConfig } from '../infrastructure/ai/managedAgents';
 import { useAgentDiscovery } from '../application/state/useAgentDiscovery';
 import { Button } from './ui/button';
 import { ScrollArea } from './ui/scroll-area';
+import { Tooltip, TooltipContent, TooltipTrigger } from './ui/tooltip';
 import AgentSelector from './ai/AgentSelector';
 import ChatInput from './ai/ChatInput';
 import ChatMessageList from './ai/ChatMessageList';
@@ -145,6 +146,8 @@ interface AIChatSidePanelProps {
   setExternalAgents?: (value: ExternalAgentConfig[] | ((prev: ExternalAgentConfig[]) => ExternalAgentConfig[])) => void;
   agentModelMap: Record<string, string>;
   setAgentModel: (agentId: string, modelId: string) => void;
+  agentProviderMap: Record<string, string>;
+  setAgentProvider: (agentId: string, providerId: string) => void;
 
   // Safety
   globalPermissionMode: AIPermissionMode;
@@ -225,6 +228,8 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
   setExternalAgents,
   agentModelMap,
   setAgentModel,
+  agentProviderMap,
+  setAgentProvider,
   globalPermissionMode,
   setGlobalPermissionMode,
   commandBlocklist,
@@ -561,8 +566,67 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
     [providers, activeProviderId],
   );
 
-  const providerDisplayName = activeProvider?.name ?? '';
-  const modelDisplayName = activeModelId || activeProvider?.defaultModel || '';
+  // Catty Agent honors a per-agent provider/model override from
+  // `agentProviderMap` / `agentModelMap`, falling back to the global active
+  // selection. External ACP agents (Claude/Codex/Copilot) keep their
+  // existing provider plumbing — the user picks them inside the ACP CLI
+  // itself, so a per-agent provider override doesn't apply.
+  const cattyAgentProvider = useMemo(() => {
+    const overrideId = agentProviderMap['catty'];
+    if (overrideId) {
+      const p = providers.find((cfg) => cfg.id === overrideId);
+      if (p) return p;
+      // Override exists but points to a deleted provider — fall through
+      // to the global active selection.
+    }
+    return activeProvider;
+  }, [agentProviderMap, providers, activeProvider]);
+
+  const cattyAgentModelId = useMemo(() => {
+    // Whitespace-only model ids are treated as "no model" everywhere
+    // (picker, send guard, SDK) — normalize at the resolution boundary
+    // so a stored "   " never slips through downstream checks.
+    const trim = (s: string | undefined | null): string => (s ?? '').trim();
+    const overrideId = agentProviderMap['catty'];
+    const overrideProvider = overrideId
+      ? providers.find((cfg) => cfg.id === overrideId)
+      : undefined;
+    if (overrideProvider) {
+      // Override intact — prefer the per-agent saved model, then the
+      // override provider's defaultModel. Never reach for the global
+      // `activeModelId` here: that id belongs to whichever provider
+      // was globally active, not the one Catty is bound to now.
+      return trim(agentModelMap['catty']) || trim(overrideProvider.defaultModel);
+    }
+    // No override, OR a stale override (the bound provider was deleted):
+    // in either case the saved model id is no longer trustworthy as a
+    // Catty pick, so consult the global active selection instead.
+    return trim(cattyAgentProvider?.defaultModel) || trim(activeModelId);
+  }, [agentModelMap, agentProviderMap, providers, cattyAgentProvider, activeModelId]);
+
+  const effectiveActiveProvider = currentAgentId === 'catty' ? cattyAgentProvider : activeProvider;
+  const effectiveActiveModelId = currentAgentId === 'catty' ? cattyAgentModelId : activeModelId;
+
+  // Catty Agent surfaces its provider picker in the chat input. The list
+  // mirrors what Settings → AI → Providers shows — every configured
+  // provider, regardless of the per-provider `enabled` toggle, so the
+  // user can swap between everything they've set up without first going
+  // back into Settings to flip a switch.
+  const cattyConfiguredProviders = useMemo(
+    () => (currentAgentId === 'catty' ? providers : []),
+    [currentAgentId, providers],
+  );
+
+  const handleAgentProviderModelSelect = useCallback(
+    (providerId: string, modelId: string) => {
+      setAgentProvider(currentAgentId, providerId);
+      setAgentModel(currentAgentId, modelId);
+    },
+    [currentAgentId, setAgentProvider, setAgentModel],
+  );
+
+  const providerDisplayName = effectiveActiveProvider?.name ?? '';
+  const modelDisplayName = effectiveActiveModelId || effectiveActiveProvider?.defaultModel || '';
 
   // Agent model presets for the current external agent
   const currentAgentConfig = useMemo(
@@ -636,6 +700,7 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
       undefined,
       undefined,
       `models_${currentAgentId}`,
+      currentAgentConfig.env,
     ).then((result) => {
       if (cancelled || !result?.ok || !Array.isArray(result.models)) return;
       // If the probe came back empty, drop any stale cached catalog for this
@@ -857,8 +922,14 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
 
       const isExternalAgent = sendAgentId !== 'catty';
 
+      // Catty Agent picks up the per-agent provider/model override. External
+      // ACP agents continue to ride the global selection (they wire their
+      // own provider through the CLI).
+      const sendActiveProvider = isExternalAgent ? activeProvider : effectiveActiveProvider;
+      const sendActiveModelId = isExternalAgent ? activeModelId : effectiveActiveModelId;
+
       // No provider configured for built-in agent
-      if (!isExternalAgent && !activeProvider) {
+      if (!isExternalAgent && !sendActiveProvider) {
         addMessageToSession(sessionId, { id: generateId(), role: 'user', content: trimmed, timestamp: Date.now() });
         addMessageToSession(sessionId, { id: generateId(), role: 'assistant', content: t('ai.chat.noProvider'), timestamp: Date.now() });
         if (currentPanelView.mode === 'session') {
@@ -868,6 +939,23 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
         return;
       }
 
+      // Catty needs a concrete model id — the SDK would otherwise dispatch
+      // an empty string and surface a vague backend error. The chat-input
+      // chip already disables provider rows with no defaultModel, but a
+      // stale binding (e.g. user emptied the provider's defaultModel after
+      // selecting it) can still land here. Trim before checking so
+      // whitespace-only ids (which the picker also treats as empty) don't
+      // sneak past either.
+      if (!isExternalAgent && !sendActiveModelId.trim()) {
+        addMessageToSession(sessionId, { id: generateId(), role: 'user', content: trimmed, timestamp: Date.now() });
+        addMessageToSession(sessionId, { id: generateId(), role: 'assistant', content: t('ai.chat.noProviderModel'), timestamp: Date.now() });
+        if (currentPanelView.mode === 'session') {
+          clearScopeDraft();
+          showScopeSessionView(sessionId);
+        }
+        return;
+      }
+
       // Add user message
       addMessageToSession(sessionId, {
         id: generateId(), role: 'user', content: trimmed,
@@ -885,8 +973,8 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
         id: assistantMsgId, role: 'assistant', content: '', timestamp: Date.now(),
         model: isExternalAgent
           ? (selectedAgentModel || agentConfig?.name || 'external')
-          : (activeModelId || activeProvider?.defaultModel || ''),
-        providerId: isExternalAgent ? undefined : activeProvider?.providerId,
+          : (sendActiveModelId || sendActiveProvider?.defaultModel || ''),
+        providerId: isExternalAgent ? undefined : sendActiveProvider?.providerId,
       });
 
       const abortController = new AbortController();
@@ -926,8 +1014,8 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
           label: scopeLabel,
         } as const;
         await sendToCattyAgent(sessionId, sendScopeKey, trimmed, abortController, currentSession ?? undefined, assistantMsgId, {
-          activeProvider,
-          activeModelId,
+          activeProvider: sendActiveProvider,
+          activeModelId: sendActiveModelId,
           scopeType,
           scopeTargetId,
           scopeLabel,
@@ -946,7 +1034,7 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
       }
     }
   }, [
-    isStreaming, activeProvider, scopeKey, currentAgentId,
+    isStreaming, activeProvider, effectiveActiveProvider, effectiveActiveModelId, scopeKey, currentAgentId,
     activeModelId, externalAgents,
     createSession, addMessageToSession, updateMessageById, updateLastMessage,
     setStreamingForScope,
@@ -1035,24 +1123,32 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
             session={activeSession}
             onExport={handleExport}
           />
-          <Button
-            variant="ghost"
-            size="icon"
-            className="h-7 w-7 rounded-md text-muted-foreground/62 hover:bg-white/[0.05] hover:text-foreground"
-            onClick={() => setShowHistory(!showHistory)}
-            title="Session history"
-          >
-            <History size={14} />
-          </Button>
-          <Button
-            variant="ghost"
-            size="icon"
-            className="h-7 w-7 rounded-md text-primary/82 hover:bg-primary/[0.10] hover:text-primary"
-            onClick={handleNewChat}
-            title="New chat"
-          >
-            <Plus size={15} />
-          </Button>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <Button
+                variant="ghost"
+                size="icon"
+                className="h-7 w-7 rounded-md text-muted-foreground/62 hover:bg-white/[0.05] hover:text-foreground"
+                onClick={() => setShowHistory(!showHistory)}
+              >
+                <History size={14} />
+              </Button>
+            </TooltipTrigger>
+            <TooltipContent>{t('ai.chat.sessionHistory')}</TooltipContent>
+          </Tooltip>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <Button
+                variant="ghost"
+                size="icon"
+                className="h-7 w-7 rounded-md text-primary/82 hover:bg-primary/[0.10] hover:text-primary"
+                onClick={handleNewChat}
+              >
+                <Plus size={15} />
+              </Button>
+            </TooltipTrigger>
+            <TooltipContent>{t('ai.chat.newChat')}</TooltipContent>
+          </Tooltip>
         </div>
       </div>
 
@@ -1117,6 +1213,16 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
             modelPresets={agentModelPresets}
             selectedModelId={selectedAgentModel}
             onModelSelect={handleAgentModelSelect}
+            providerSwitcher={
+              currentAgentId === 'catty' && cattyConfiguredProviders.length > 0
+                ? {
+                    providers: cattyConfiguredProviders,
+                    selectedProviderId: effectiveActiveProvider?.id,
+                    selectedModelId: effectiveActiveModelId || undefined,
+                    onSelect: handleAgentProviderModelSelect,
+                  }
+                : undefined
+            }
             files={files}
             onAddFiles={addFiles}
             onRemoveFile={removeFile}
@@ -1199,13 +1305,17 @@ const SessionHistoryDrawer: React.FC<SessionHistoryDrawerProps> = ({
                     <span className={SESSION_HISTORY_ROW_CLASSNAMES.time}>
                       {timeStr}
                     </span>
-                    <button
-                      onClick={(e) => onDelete(e, session.id)}
-                      className={SESSION_HISTORY_ROW_CLASSNAMES.deleteButton}
-                      title="Delete"
-                    >
-                      <Trash2 size={12} />
-                    </button>
+                    <Tooltip>
+                      <TooltipTrigger asChild>
+                        <button
+                          onClick={(e) => onDelete(e, session.id)}
+                          className={SESSION_HISTORY_ROW_CLASSNAMES.deleteButton}
+                        >
+                          <Trash2 size={12} />
+                        </button>
+                      </TooltipTrigger>
+                      <TooltipContent>{t('common.delete')}</TooltipContent>
+                    </Tooltip>
                   </div>
                 </div>
               );

components/CloudSyncSettings.tsx

@@ -54,6 +54,7 @@ import { Label } from './ui/label';
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from './ui/select';
 import { Tabs, TabsContent, TabsList, TabsTrigger } from './ui/tabs';
 import { toast } from './ui/toast';
+import { Tooltip, TooltipContent, TooltipTrigger } from './ui/tooltip';
 
 // ============================================================================
 // Provider Icons
@@ -377,12 +378,14 @@ const ProviderCard: React.FC<ProviderCardProps> = ({
                         </span>
                     </div>
                 ) : error ? (
-                    <p
-                        className="text-xs text-red-500 truncate mt-1 max-w-[360px] cursor-help"
-                        title={error}
-                    >
-                        {error}
-                    </p>
+                    <Tooltip>
+                        <TooltipTrigger asChild>
+                            <p className="text-xs text-red-500 truncate mt-1 max-w-[360px] cursor-help">
+                                {error}
+                            </p>
+                        </TooltipTrigger>
+                        <TooltipContent>{error}</TooltipContent>
+                    </Tooltip>
                 ) : (
                     <p className="text-xs text-muted-foreground mt-1">
                         {isConnecting ? t('cloudSync.provider.connecting') : t('cloudSync.provider.notConnected')}
@@ -1904,9 +1907,14 @@ const SyncDashboard: React.FC<SyncDashboardProps> = ({
                                                     </div>
                                                 </div>
                                                 {entry.error && (
-                                                    <span className="text-xs text-red-500 truncate max-w-24" title={entry.error}>
-                                                        {t('cloudSync.history.error')}
-                                                    </span>
+                                                    <Tooltip>
+                                                        <TooltipTrigger asChild>
+                                                            <span className="text-xs text-red-500 truncate max-w-24 cursor-default">
+                                                                {t('cloudSync.history.error')}
+                                                            </span>
+                                                        </TooltipTrigger>
+                                                        <TooltipContent>{entry.error}</TooltipContent>
+                                                    </Tooltip>
                                                 )}
                                             </div>
                                         ))}

components/ConnectionLogsManager.tsx

@@ -12,6 +12,7 @@ import { useI18n } from "../application/i18n/I18nProvider";
 import { cn } from "../lib/utils";
 import { ConnectionLog, Host } from "../types";
 import { ScrollArea } from "./ui/scroll-area";
+import { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
 
 interface ConnectionLogsManagerProps {
     logs: ConnectionLog[];
@@ -108,31 +109,39 @@ const LogItem = memo<LogItemProps>(({ log, onToggleSaved, onDelete, onClick }) =
 
             {/* Saved column */}
             <div className="flex items-center gap-2 shrink-0">
-                <button
-                    onClick={(e) => {
-                        e.stopPropagation();
-                        onToggleSaved(log.id);
-                    }}
-                    className={cn(
-                        "p-1.5 rounded-md transition-colors",
-                        log.saved
-                            ? "text-primary bg-primary/10"
-                            : "text-muted-foreground hover:text-primary hover:bg-primary/10"
-                    )}
-                    title={log.saved ? t("logs.action.unsave") : t("logs.action.save")}
-                >
-                    <Bookmark size={16} fill={log.saved ? "currentColor" : "none"} />
-                </button>
-                <button
-                    onClick={(e) => {
-                        e.stopPropagation();
-                        onDelete(log.id);
-                    }}
-                    className="p-1.5 rounded-md text-muted-foreground hover:text-destructive hover:bg-destructive/10 transition-colors opacity-0 group-hover:opacity-100"
-                    title={t("logs.action.delete")}
-                >
-                    <Trash2 size={16} />
-                </button>
+                <Tooltip>
+                    <TooltipTrigger asChild>
+                        <button
+                            onClick={(e) => {
+                                e.stopPropagation();
+                                onToggleSaved(log.id);
+                            }}
+                            className={cn(
+                                "p-1.5 rounded-md transition-colors",
+                                log.saved
+                                    ? "text-primary bg-primary/10"
+                                    : "text-muted-foreground hover:text-primary hover:bg-primary/10"
+                            )}
+                        >
+                            <Bookmark size={16} fill={log.saved ? "currentColor" : "none"} />
+                        </button>
+                    </TooltipTrigger>
+                    <TooltipContent>{log.saved ? t("logs.action.unsave") : t("logs.action.save")}</TooltipContent>
+                </Tooltip>
+                <Tooltip>
+                    <TooltipTrigger asChild>
+                        <button
+                            onClick={(e) => {
+                                e.stopPropagation();
+                                onDelete(log.id);
+                            }}
+                            className="p-1.5 rounded-md text-muted-foreground hover:text-destructive hover:bg-destructive/10 transition-colors opacity-0 group-hover:opacity-100"
+                        >
+                            <Trash2 size={16} />
+                        </button>
+                    </TooltipTrigger>
+                    <TooltipContent>{t("logs.action.delete")}</TooltipContent>
+                </Tooltip>
             </div>
         </div>
     );

components/FileOpenerDialog.tsx

@@ -17,7 +17,7 @@ interface FileOpenerDialogProps {
   onSelectSystemApp: () => Promise<SystemAppInfo | null>;
 }
 
-export const FileOpenerDialog: React.FC<FileOpenerDialogProps> = ({
+const FileOpenerDialog: React.FC<FileOpenerDialogProps> = ({
   open,
   onClose,
   fileName,

components/GroupDetailsPanel.tsx

@@ -1,6 +1,8 @@
 import {
   Check,
+  ChevronDown,
   ChevronRight,
+  ChevronUp,
   Eye,
   EyeOff,
   FileKey,
@@ -34,6 +36,8 @@ import {
   SSHKey,
 } from "../types";
 import ThemeSelectPanel from "./ThemeSelectPanel";
+import { AlgorithmOverridesPanel } from "./host-details/AlgorithmOverridesPanel";
+import { Collapsible, CollapsibleContent, CollapsibleTrigger } from "./ui/collapsible";
 import {
   ChainPanel,
   EnvVarsPanel,
@@ -50,10 +54,13 @@ import { Card } from "./ui/card";
 import { Combobox } from "./ui/combobox";
 import { Dropdown, DropdownContent, DropdownTrigger } from "./ui/dropdown";
 import { Input } from "./ui/input";
+import { Textarea } from "./ui/textarea";
 import { Popover, PopoverContent, PopoverTrigger } from "./ui/popover";
+import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "./ui/select";
 import { TerminalFontSelect } from "./settings/TerminalFontSelect";
 import { useAvailableFonts } from "../application/state/fontStore";
 import { toast } from "./ui/toast";
+import { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
 
 type SubPanel = "none" | "proxy" | "chain" | "env-vars" | "theme-select";
 
@@ -110,7 +117,7 @@ const GroupDetailsPanel: React.FC<GroupDetailsPanelProps> = ({
     c.protocol === 'ssh' ||
     c.port !== undefined || !!c.username || !!c.password || !!c.identityFileId ||
     c.agentForwarding !== undefined || c.authMethod !== undefined || !!c.identityId ||
-    !!c.proxyProfileId || !!c.proxyConfig || !!c.hostChain || !!c.startupCommand || c.legacyAlgorithms !== undefined || c.backspaceBehavior !== undefined ||
+    !!c.proxyProfileId || !!c.proxyConfig || !!c.hostChain || !!c.startupCommand || c.legacyAlgorithms !== undefined || c.skipEcdsaHostKey !== undefined || c.algorithms !== undefined || c.backspaceBehavior !== undefined ||
     (c.environmentVariables && c.environmentVariables.length > 0) ||
     c.moshEnabled !== undefined || !!c.moshServerPath ||
     (c.identityFilePaths && c.identityFilePaths.length > 0);
@@ -126,6 +133,7 @@ const GroupDetailsPanel: React.FC<GroupDetailsPanelProps> = ({
   // Password visibility state
   const [showPassword, setShowPassword] = useState(false);
   const [showTelnetPassword, setShowTelnetPassword] = useState(false);
+  const [showAlgorithmOverrides, setShowAlgorithmOverrides] = useState(false);
   const [addProtocolOpen, setAddProtocolOpen] = useState(false);
 
   // Credential selection state
@@ -170,6 +178,8 @@ const GroupDetailsPanel: React.FC<GroupDetailsPanelProps> = ({
       delete next.agentForwarding;
       delete next.startupCommand;
       delete next.legacyAlgorithms;
+      delete next.skipEcdsaHostKey;
+      delete next.algorithms;
       delete next.backspaceBehavior;
       delete next.proxyProfileId;
       delete next.proxyConfig;
@@ -311,6 +321,36 @@ const GroupDetailsPanel: React.FC<GroupDetailsPanelProps> = ({
     if (!parentGroup || groupConfigs.length === 0) return terminalThemeId;
     return resolveGroupTerminalThemeId(resolveGroupDefaults(parentGroup, groupConfigs), terminalThemeId);
   }, [groupConfigs, parentGroup, terminalThemeId]);
+
+  // Effective `legacyAlgorithms` for this group, considering inheritance
+  // from the parent chain. Used by the algorithm-overrides editor so the
+  // seed reflects what hosts in this group would actually advertise — if
+  // the parent group already turned legacy mode on, the editor should
+  // include legacy algorithms in its default list even when this group
+  // itself hasn't set the flag.
+  const inheritedLegacyAlgorithms = useMemo(() => {
+    if (!parentGroup || groupConfigs.length === 0) return false;
+    return !!resolveGroupDefaults(parentGroup, groupConfigs).legacyAlgorithms;
+  }, [groupConfigs, parentGroup]);
+
+  // Same idea for the algorithm-override lists themselves: surface what
+  // this group would inherit from its parent so the editor can warn that
+  // a local Reset falls back to the parent's lists, not NetCatty's
+  // defaults.
+  const inheritedAlgorithmOverrides = useMemo(() => {
+    if (!parentGroup || groupConfigs.length === 0) return undefined;
+    return resolveGroupDefaults(parentGroup, groupConfigs).algorithms;
+  }, [groupConfigs, parentGroup]);
+
+  // And for the per-flag toggles below — if the parent already turned
+  // a flag on, the runtime applies it to hosts in this group via
+  // `applyGroupDefaults`, so the local toggle must reflect that. Without
+  // this, a child group would show the flag as off while connections
+  // still negotiated with it.
+  const inheritedSkipEcdsaHostKey = useMemo(() => {
+    if (!parentGroup || groupConfigs.length === 0) return false;
+    return !!resolveGroupDefaults(parentGroup, groupConfigs).skipEcdsaHostKey;
+  }, [groupConfigs, parentGroup]);
   const effectiveThemeId = form.themeOverride === false
     ? inheritedThemeId
     : (form.theme || inheritedThemeId);
@@ -359,6 +399,8 @@ const GroupDetailsPanel: React.FC<GroupDetailsPanelProps> = ({
         ...(form.agentForwarding !== undefined && { agentForwarding: form.agentForwarding }),
         ...(form.startupCommand !== undefined && { startupCommand: form.startupCommand }),
         ...(form.legacyAlgorithms !== undefined && { legacyAlgorithms: form.legacyAlgorithms }),
+        ...(form.skipEcdsaHostKey !== undefined && { skipEcdsaHostKey: form.skipEcdsaHostKey }),
+        ...(form.algorithms !== undefined && { algorithms: form.algorithms }),
         ...(form.backspaceBehavior !== undefined && { backspaceBehavior: form.backspaceBehavior }),
         ...(form.proxyProfileId !== undefined && { proxyProfileId: form.proxyProfileId }),
         ...(normalizedProxyConfig !== undefined && { proxyConfig: normalizedProxyConfig }),
@@ -814,29 +856,33 @@ const GroupDetailsPanel: React.FC<GroupDetailsPanelProps> = ({
                       }
                     }}
                   />
-                  <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>
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <Button
+                        variant="secondary"
+                        size="icon"
+                        className="h-8 w-8 shrink-0"
+                        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>
+                    </TooltipTrigger>
+                    <TooltipContent>{t("hostDetails.credential.browseKeyFile")}</TooltipContent>
+                  </Tooltip>
                   <Button
                     variant="ghost"
                     size="icon"
@@ -855,33 +901,69 @@ const GroupDetailsPanel: React.FC<GroupDetailsPanelProps> = ({
               onToggle={() => update("agentForwarding", !form.agentForwarding)}
             />
 
-            {/* Startup Command */}
-            <Input
+            {/* Startup Command — Textarea so multi-line sequences are typeable
+                here just like on the per-host details panel (#1083 follow-up). */}
+            <Textarea
               placeholder={t("hostDetails.startupCommand.placeholder")}
               value={form.startupCommand || ""}
               onChange={(e) => update("startupCommand", e.target.value || undefined)}
-              className="h-10"
+              className="min-h-[80px] font-mono text-sm"
+              rows={3}
             />
 
-            {/* Legacy Algorithms */}
+            {/* Display the *effective* value (this group's field falling
+                back to the resolved parent default). Same rationale as
+                in HostDetailsPanel — without the fallback, a child group
+                that inherits a flag from a parent would show "off" in
+                the UI while connections still applied it. */}
             <ToggleRow
               label={t("hostDetails.legacyAlgorithms")}
-              enabled={!!form.legacyAlgorithms}
-              onToggle={() => update("legacyAlgorithms", !form.legacyAlgorithms)}
+              enabled={!!(form.legacyAlgorithms ?? inheritedLegacyAlgorithms)}
+              onToggle={() => update(
+                "legacyAlgorithms",
+                !(form.legacyAlgorithms ?? inheritedLegacyAlgorithms),
+              )}
             />
 
-            {/* Backspace behavior */}
-            <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>
+            <ToggleRow
+              label={t("hostDetails.skipEcdsaHostKey")}
+              enabled={!!(form.skipEcdsaHostKey ?? inheritedSkipEcdsaHostKey)}
+              onToggle={() => update(
+                "skipEcdsaHostKey",
+                !(form.skipEcdsaHostKey ?? inheritedSkipEcdsaHostKey),
+              )}
+            />
+            <p className="text-xs text-muted-foreground break-words">
+              {t("hostDetails.skipEcdsaHostKey.desc")}
+            </p>
+            <Collapsible open={showAlgorithmOverrides} onOpenChange={setShowAlgorithmOverrides}>
+              <CollapsibleTrigger asChild>
+                <Button
+                  variant="ghost"
+                  className="w-full justify-between h-8 px-2 hover:bg-accent/50"
+                >
+                  <span className="text-xs font-medium text-muted-foreground">
+                    {t("hostDetails.algorithms.advanced")}
+                    {form.algorithms && Object.keys(form.algorithms).length > 0 && (
+                      <span className="ml-1.5 text-[10px] text-yellow-600 dark:text-yellow-400">
+                        ({t("hostDetails.algorithms.customized")})
+                      </span>
+                    )}
+                  </span>
+                  {showAlgorithmOverrides
+                    ? <ChevronUp size={14} className="text-muted-foreground" />
+                    : <ChevronDown size={14} className="text-muted-foreground" />}
+                </Button>
+              </CollapsibleTrigger>
+              <CollapsibleContent className="mt-2">
+                <AlgorithmOverridesPanel
+                  value={form.algorithms}
+                  legacyEnabled={!!(form.legacyAlgorithms ?? inheritedLegacyAlgorithms)}
+                  inheritedFromGroup={inheritedAlgorithmOverrides}
+                  onChange={(next) => update("algorithms", next)}
+                />
+              </CollapsibleContent>
+            </Collapsible>
 
             {/* Proxy */}
             <button
@@ -895,14 +977,19 @@ const GroupDetailsPanel: React.FC<GroupDetailsPanelProps> = ({
               </div>
               <div className="flex min-w-0 items-center gap-2">
                 {(form.proxyConfig?.host || form.proxyProfileId) && (
-                  <div title={proxySummaryLabel} className="min-w-0">
-                    <Badge
-                      variant="secondary"
-                      className="max-w-[160px] truncate text-xs"
-                    >
-                      {proxySummaryLabel}
-                    </Badge>
-                  </div>
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <div className="min-w-0 cursor-default">
+                        <Badge
+                          variant="secondary"
+                          className="max-w-[160px] truncate text-xs"
+                        >
+                          {proxySummaryLabel}
+                        </Badge>
+                      </div>
+                    </TooltipTrigger>
+                    <TooltipContent>{proxySummaryLabel}</TooltipContent>
+                  </Tooltip>
                 )}
                 <ChevronRight size={14} className="text-muted-foreground" />
               </div>
@@ -962,6 +1049,25 @@ const GroupDetailsPanel: React.FC<GroupDetailsPanelProps> = ({
                 className="h-10"
               />
             )}
+
+            {/* Backspace behavior — terminal input mapping, lives at the
+                bottom of the SSH section so it doesn't get visually
+                grouped with the algorithm controls above. */}
+            <div className="flex items-center justify-between gap-2">
+              <p className="text-xs text-muted-foreground">{t("hostDetails.backspaceBehavior")}</p>
+              <Select
+                value={form.backspaceBehavior ?? "default"}
+                onValueChange={(v) => update("backspaceBehavior", v === "default" ? undefined : v)}
+              >
+                <SelectTrigger className="h-8 w-auto text-xs">
+                  <SelectValue />
+                </SelectTrigger>
+                <SelectContent>
+                  <SelectItem value="default">{t("hostDetails.backspaceBehavior.default")}</SelectItem>
+                  <SelectItem value="ctrl-h">^H (0x08)</SelectItem>
+                </SelectContent>
+              </Select>
+            </div>
           </Card>
         )}
 

components/HostDetailsPanel.proxyProfile.test.tsx

@@ -6,6 +6,7 @@ import { renderToStaticMarkup } from "react-dom/server";
 import { I18nProvider } from "../application/i18n/I18nProvider.tsx";
 import type { Host } from "../types.ts";
 import HostDetailsPanel, { parseOptionalPortInput } from "./HostDetailsPanel.tsx";
+import { TooltipProvider } from "./ui/tooltip.tsx";
 
 const hostWithMissingProxyProfile: Host = {
   id: "host-1",
@@ -26,20 +27,24 @@ const renderHostDetails = (initialData: Host = hostWithMissingProxyProfile) =>
     React.createElement(
       I18nProvider,
       { locale: "en" },
-      React.createElement(HostDetailsPanel, {
-        initialData,
-        availableKeys: [],
-        identities: [],
-        proxyProfiles: [],
-        groups: [],
-        managedSources: [],
-        allTags: [],
-        allHosts: [],
-        terminalThemeId: "default",
-        terminalFontSize: 14,
-        onSave: () => {},
-        onCancel: () => {},
-      }),
+      React.createElement(
+        TooltipProvider,
+        null,
+        React.createElement(HostDetailsPanel, {
+          initialData,
+          availableKeys: [],
+          identities: [],
+          proxyProfiles: [],
+          groups: [],
+          managedSources: [],
+          allTags: [],
+          allHosts: [],
+          terminalThemeId: "default",
+          terminalFontSize: 14,
+          onSave: () => {},
+          onCancel: () => {},
+        }),
+      ),
     ),
   );
 
@@ -111,29 +116,33 @@ test("HostDetailsPanel displays inherited telnet port before falling back to 23"
     React.createElement(
       I18nProvider,
       { locale: "en" },
-      React.createElement(HostDetailsPanel, {
-        initialData: {
-          ...hostWithMissingProxyProfile,
-          protocol: "telnet",
-          telnetEnabled: true,
-          telnetPort: undefined,
-          port: undefined,
-          group: "network",
-          proxyProfileId: undefined,
-        },
-        availableKeys: [],
-        identities: [],
-        proxyProfiles: [],
-        groups: ["network"],
-        managedSources: [],
-        allTags: [],
-        allHosts: [],
-        terminalThemeId: "default",
-        terminalFontSize: 14,
-        groupConfigs: [{ path: "network", telnetPort: 2325 }],
-        onSave: () => {},
-        onCancel: () => {},
-      }),
+      React.createElement(
+        TooltipProvider,
+        null,
+        React.createElement(HostDetailsPanel, {
+          initialData: {
+            ...hostWithMissingProxyProfile,
+            protocol: "telnet",
+            telnetEnabled: true,
+            telnetPort: undefined,
+            port: undefined,
+            group: "network",
+            proxyProfileId: undefined,
+          },
+          availableKeys: [],
+          identities: [],
+          proxyProfiles: [],
+          groups: ["network"],
+          managedSources: [],
+          allTags: [],
+          allHosts: [],
+          terminalThemeId: "default",
+          terminalFontSize: 14,
+          groupConfigs: [{ path: "network", telnetPort: 2325 }],
+          onSave: () => {},
+          onCancel: () => {},
+        }),
+      ),
     ),
   );
 
@@ -145,29 +154,33 @@ test("HostDetailsPanel uses group telnet port instead of ssh port for optional t
     React.createElement(
       I18nProvider,
       { locale: "en" },
-      React.createElement(HostDetailsPanel, {
-        initialData: {
-          ...hostWithMissingProxyProfile,
-          protocol: "ssh",
-          telnetEnabled: true,
-          telnetPort: undefined,
-          port: 2222,
-          group: "network",
-          proxyProfileId: undefined,
-        },
-        availableKeys: [],
-        identities: [],
-        proxyProfiles: [],
-        groups: ["network"],
-        managedSources: [],
-        allTags: [],
-        allHosts: [],
-        terminalThemeId: "default",
-        terminalFontSize: 14,
-        groupConfigs: [{ path: "network", telnetPort: 2325 }],
-        onSave: () => {},
-        onCancel: () => {},
-      }),
+      React.createElement(
+        TooltipProvider,
+        null,
+        React.createElement(HostDetailsPanel, {
+          initialData: {
+            ...hostWithMissingProxyProfile,
+            protocol: "ssh",
+            telnetEnabled: true,
+            telnetPort: undefined,
+            port: 2222,
+            group: "network",
+            proxyProfileId: undefined,
+          },
+          availableKeys: [],
+          identities: [],
+          proxyProfiles: [],
+          groups: ["network"],
+          managedSources: [],
+          allTags: [],
+          allHosts: [],
+          terminalThemeId: "default",
+          terminalFontSize: 14,
+          groupConfigs: [{ path: "network", telnetPort: 2325 }],
+          onSave: () => {},
+          onCancel: () => {},
+        }),
+      ),
     ),
   );
 
@@ -181,35 +194,39 @@ test("HostDetailsPanel displays inherited telnet credentials", () => {
     React.createElement(
       I18nProvider,
       { locale: "en" },
-      React.createElement(HostDetailsPanel, {
-        initialData: {
-          ...hostWithMissingProxyProfile,
-          protocol: "telnet",
-          telnetEnabled: true,
-          telnetUsername: undefined,
-          telnetPassword: undefined,
-          username: "ssh-user",
-          password: "ssh-password",
-          group: "network",
-          proxyProfileId: undefined,
-        },
-        availableKeys: [],
-        identities: [],
-        proxyProfiles: [],
-        groups: ["network"],
-        managedSources: [],
-        allTags: [],
-        allHosts: [],
-        terminalThemeId: "default",
-        terminalFontSize: 14,
-        groupConfigs: [{
-          path: "network",
-          telnetUsername: "group-telnet-user",
-          telnetPassword: "group-telnet-password",
-        }],
-        onSave: () => {},
-        onCancel: () => {},
-      }),
+      React.createElement(
+        TooltipProvider,
+        null,
+        React.createElement(HostDetailsPanel, {
+          initialData: {
+            ...hostWithMissingProxyProfile,
+            protocol: "telnet",
+            telnetEnabled: true,
+            telnetUsername: undefined,
+            telnetPassword: undefined,
+            username: "ssh-user",
+            password: "ssh-password",
+            group: "network",
+            proxyProfileId: undefined,
+          },
+          availableKeys: [],
+          identities: [],
+          proxyProfiles: [],
+          groups: ["network"],
+          managedSources: [],
+          allTags: [],
+          allHosts: [],
+          terminalThemeId: "default",
+          terminalFontSize: 14,
+          groupConfigs: [{
+            path: "network",
+            telnetUsername: "group-telnet-user",
+            telnetPassword: "group-telnet-password",
+          }],
+          onSave: () => {},
+          onCancel: () => {},
+        }),
+      ),
     ),
   );
 

components/HostDetailsPanel.tsx

@@ -2,6 +2,7 @@ import {
   AlertTriangle,
   Check,
   ChevronDown,
+  ChevronUp,
   Eye,
   EyeOff,
   FolderLock,
@@ -55,6 +56,8 @@ import { EnvVar, GroupConfig, Host, Identity, ManagedSource, ProxyConfig, ProxyP
 import { DISTRO_COLORS, DISTRO_LOGOS } from "./DistroAvatar";
 import { DistroAvatar } from "./DistroAvatar";
 import ThemeSelectPanel from "./ThemeSelectPanel";
+import { AlgorithmOverridesPanel } from "./host-details/AlgorithmOverridesPanel";
+import { Collapsible, CollapsibleContent, CollapsibleTrigger } from "./ui/collapsible";
 import {
   AsidePanel,
   AsidePanelContent,
@@ -213,6 +216,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
 
   // Password visibility state
   const [showPassword, setShowPassword] = useState(false);
+  const [showAlgorithmOverrides, setShowAlgorithmOverrides] = useState(false);
 
   // Local key file path input state
   const [newKeyFilePath, setNewKeyFilePath] = useState("");
@@ -938,15 +942,19 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                     {selectedIdentity.label}
                   </div>
                 </div>
-                <Button
-                  variant="ghost"
-                  size="icon"
-                  className="h-8 w-8 shrink-0"
-                  onClick={clearIdentity}
-                  title={t("common.clear")}
-                >
-                  <X size={14} />
-                </Button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className="h-8 w-8 shrink-0"
+                      onClick={clearIdentity}
+                    >
+                      <X size={14} />
+                    </Button>
+                  </TooltipTrigger>
+                  <TooltipContent>{t("common.clear")}</TooltipContent>
+                </Tooltip>
               </div>
             ) : form.identityId ? (
               <div className="flex items-center gap-2 h-10 px-3 rounded-md border border-border/70 bg-secondary/60">
@@ -956,15 +964,19 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                     {t("hostDetails.identity.missing")}
                   </div>
                 </div>
-                <Button
-                  variant="ghost"
-                  size="icon"
-                  className="h-8 w-8 shrink-0"
-                  onClick={clearIdentity}
-                  title={t("common.clear")}
-                >
-                  <X size={14} />
-                </Button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className="h-8 w-8 shrink-0"
+                      onClick={clearIdentity}
+                    >
+                      <X size={14} />
+                    </Button>
+                  </TooltipTrigger>
+                  <TooltipContent>{t("common.clear")}</TooltipContent>
+                </Tooltip>
               </div>
             ) : (
               (() => {
@@ -1019,29 +1031,33 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                           }}
                           className="h-10 pr-9"
                         />
-                        <button
-                          type="button"
-                          className="absolute right-2 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground transition-colors"
-                          onClick={() => {
-                            setIdentitySuggestionsOpen((prev) => {
-                              if (prev) return false;
-                              const q = (form.username || "")
-                                .toLowerCase()
-                                .trim();
-                              const matches = q
-                                ? identities.filter(
-                                  (i) =>
-                                    i.label.toLowerCase().includes(q) ||
-                                    i.username.toLowerCase().includes(q),
-                                )
-                                : identities;
-                              return matches.length > 0;
-                            });
-                          }}
-                          title={t("hostDetails.identity.suggestions")}
-                        >
-                          <ChevronDown size={16} />
-                        </button>
+                        <Tooltip>
+                          <TooltipTrigger asChild>
+                            <button
+                              type="button"
+                              className="absolute right-2 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground transition-colors"
+                              onClick={() => {
+                                setIdentitySuggestionsOpen((prev) => {
+                                  if (prev) return false;
+                                  const q = (form.username || "")
+                                    .toLowerCase()
+                                    .trim();
+                                  const matches = q
+                                    ? identities.filter(
+                                      (i) =>
+                                        i.label.toLowerCase().includes(q) ||
+                                        i.username.toLowerCase().includes(q),
+                                    )
+                                    : identities;
+                                  return matches.length > 0;
+                                });
+                              }}
+                            >
+                              <ChevronDown size={16} />
+                            </button>
+                          </TooltipTrigger>
+                          <TooltipContent>{t("hostDetails.identity.suggestions")}</TooltipContent>
+                        </Tooltip>
                       </div>
                     </PopoverTrigger>
                     <PopoverContent
@@ -1123,14 +1139,18 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                   onChange={(e) => update("password", e.target.value)}
                   className="h-10 pr-10"
                 />
-                <button
-                  type="button"
-                  onClick={() => setShowPassword(!showPassword)}
-                  className="absolute right-2 top-1/2 -translate-y-1/2 p-1 text-muted-foreground hover:text-foreground transition-colors"
-                  title={showPassword ? t("hostDetails.password.hide") : t("hostDetails.password.show")}
-                >
-                  {showPassword ? <EyeOff size={16} /> : <Eye size={16} />}
-                </button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <button
+                      type="button"
+                      onClick={() => setShowPassword(!showPassword)}
+                      className="absolute right-2 top-1/2 -translate-y-1/2 p-1 text-muted-foreground hover:text-foreground transition-colors"
+                    >
+                      {showPassword ? <EyeOff size={16} /> : <Eye size={16} />}
+                    </button>
+                  </TooltipTrigger>
+                  <TooltipContent>{showPassword ? t("hostDetails.password.hide") : t("hostDetails.password.show")}</TooltipContent>
+                </Tooltip>
               </div>
             )}
 
@@ -1153,9 +1173,14 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                 {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>
+                    <Tooltip>
+                      <TooltipTrigger asChild>
+                        <span className="text-xs w-0 flex-1 truncate font-mono cursor-default">
+                          {keyPath}
+                        </span>
+                      </TooltipTrigger>
+                      <TooltipContent>{keyPath}</TooltipContent>
+                    </Tooltip>
                     <Button
                       variant="ghost"
                       size="icon"
@@ -1366,26 +1391,30 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                         }
                       }}
                     />
-                    <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) {
-                          addLocalKeyFilePath(filePath);
-                        }
-                      }}
-                    >
-                      <FolderOpen size={14} />
-                    </Button>
+                    <Tooltip>
+                      <TooltipTrigger asChild>
+                        <Button
+                          variant="secondary"
+                          size="icon"
+                          className="h-8 w-8 shrink-0"
+                          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) {
+                              addLocalKeyFilePath(filePath);
+                            }
+                          }}
+                        >
+                          <FolderOpen size={14} />
+                        </Button>
+                      </TooltipTrigger>
+                      <TooltipContent>{t("hostDetails.credential.browseKeyFile")}</TooltipContent>
+                    </Tooltip>
                     <Button
                       variant="ghost"
                       size="icon"
@@ -1772,21 +1801,30 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         </Card>
         )}
 
-        {/* Legacy Algorithms */}
+        {/* SSH Algorithms */}
         <Card className="p-3 space-y-2 bg-card border-border/80">
           <div className="flex items-center gap-2">
             <ShieldAlert size={14} className="text-muted-foreground" />
-            <p className="text-xs font-semibold">{t("hostDetails.section.legacyAlgorithms")}</p>
+            <p className="text-xs font-semibold">{t("hostDetails.section.sshAlgorithms")}</p>
           </div>
+          {/* Display the *effective* value of these toggles (host field
+              falling back to the resolved group default). Without the
+              fallback a host that inherits the flag from its group would
+              show "off" while the runtime applied it anyway, and the
+              toggle's onToggle handler would compute the wrong "next"
+              value from the raw host field. */}
           <ToggleRow
             label={t("hostDetails.legacyAlgorithms")}
-            enabled={!!form.legacyAlgorithms}
-            onToggle={() => update("legacyAlgorithms", !form.legacyAlgorithms)}
+            enabled={!!(form.legacyAlgorithms ?? effectiveGroupDefaults?.legacyAlgorithms)}
+            onToggle={() => update(
+              "legacyAlgorithms",
+              !(form.legacyAlgorithms ?? effectiveGroupDefaults?.legacyAlgorithms),
+            )}
           />
           <p className="text-xs text-muted-foreground break-words">
             {t("hostDetails.legacyAlgorithms.desc")}
           </p>
-          {form.legacyAlgorithms && (
+          {(form.legacyAlgorithms ?? effectiveGroupDefaults?.legacyAlgorithms) && (
             <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">
@@ -1794,16 +1832,75 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
               </p>
             </div>
           )}
-          <div className="flex items-center justify-between">
+          <ToggleRow
+            label={t("hostDetails.skipEcdsaHostKey")}
+            enabled={!!(form.skipEcdsaHostKey ?? effectiveGroupDefaults?.skipEcdsaHostKey)}
+            onToggle={() => update(
+              "skipEcdsaHostKey",
+              !(form.skipEcdsaHostKey ?? effectiveGroupDefaults?.skipEcdsaHostKey),
+            )}
+          />
+          <p className="text-xs text-muted-foreground break-words">
+            {t("hostDetails.skipEcdsaHostKey.desc")}
+          </p>
+          <Collapsible open={showAlgorithmOverrides} onOpenChange={setShowAlgorithmOverrides}>
+            <CollapsibleTrigger asChild>
+              <Button
+                variant="ghost"
+                className="w-full justify-between h-8 px-2 hover:bg-accent/50"
+              >
+                <span className="text-xs font-medium text-muted-foreground">
+                  {t("hostDetails.algorithms.advanced")}
+                  {form.algorithms && Object.keys(form.algorithms).length > 0 && (
+                    <span className="ml-1.5 text-[10px] text-yellow-600 dark:text-yellow-400">
+                      ({t("hostDetails.algorithms.customized")})
+                    </span>
+                  )}
+                </span>
+                {showAlgorithmOverrides
+                  ? <ChevronUp size={14} className="text-muted-foreground" />
+                  : <ChevronDown size={14} className="text-muted-foreground" />}
+              </Button>
+            </CollapsibleTrigger>
+            <CollapsibleContent className="mt-2">
+              <AlgorithmOverridesPanel
+                value={form.algorithms}
+                /* Use the effective legacy flag (host value falling back to
+                   the currently selected group's default) so the seed
+                   reflects what the host would actually advertise. We
+                   read from `effectiveGroupDefaults` (re-resolved on
+                   every form.group change), not the `groupDefaults` prop
+                   — otherwise switching the host into a different group
+                   without saving first would seed from the original
+                   group's flag and silently mis-populate the override. */
+                legacyEnabled={!!(form.legacyAlgorithms ?? effectiveGroupDefaults?.legacyAlgorithms)}
+                inheritedFromGroup={effectiveGroupDefaults?.algorithms}
+                onChange={(next) => update("algorithms", next)}
+              />
+            </CollapsibleContent>
+          </Collapsible>
+        </Card>
+
+        {/* Terminal Behavior — input/output key mappings (backspace, etc.) */}
+        <Card className="p-3 space-y-2 bg-card border-border/80">
+          <div className="flex items-center gap-2">
+            <TerminalSquare size={14} className="text-muted-foreground" />
+            <p className="text-xs font-semibold">{t("hostDetails.section.terminalBehavior")}</p>
+          </div>
+          <div className="flex items-center justify-between gap-2">
             <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)}
+            <Select
+              value={form.backspaceBehavior ?? "default"}
+              onValueChange={(v) => update("backspaceBehavior", v === "default" ? undefined : v)}
             >
-              <option value="">{t("hostDetails.backspaceBehavior.default")}</option>
-              <option value="ctrl-h">^H (0x08)</option>
-            </select>
+              <SelectTrigger className="h-8 w-auto text-xs">
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="default">{t("hostDetails.backspaceBehavior.default")}</SelectItem>
+                <SelectItem value="ctrl-h">^H (0x08)</SelectItem>
+              </SelectContent>
+            </Select>
           </div>
         </Card>
 

components/KeychainManager.tsx

@@ -22,6 +22,8 @@ import React, { useCallback, useMemo, useState } from "react";
 import { useI18n } from "../application/i18n/I18nProvider";
 import { useStoredViewMode } from "../application/state/useStoredViewMode";
 import { sanitizeCredentialValue } from "../domain/credentials";
+import { applyGroupDefaults, resolveGroupDefaults } from "../domain/groupConfig";
+import type { GroupConfig } from "../domain/models";
 import { resolveBridgeKeyAuth, resolveHostAuth } from "../domain/sshAuth";
 import { STORAGE_KEY_VAULT_KEYS_VIEW_MODE } from "../infrastructure/config/storageKeys";
 import { logger } from "../lib/logger";
@@ -54,6 +56,7 @@ import { Input } from "./ui/input";
 import { Label } from "./ui/label";
 import { Textarea } from "./ui/textarea";
 import { toast } from "./ui/toast";
+import { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
 
 // Import utilities and components from keychain module
 import {
@@ -74,6 +77,13 @@ interface KeychainManagerProps {
   hosts?: Host[];
   proxyProfiles?: ProxyProfile[];
   customGroups?: string[];
+  /**
+   * Group default configurations. Needed by the "export public key to
+   * host" flow so per-host SSH algorithm settings (legacy / skipEcdsa /
+   * overrides) that the host inherits from its group are honored when
+   * the export opens its one-off SSH connection.
+   */
+  groupConfigs?: GroupConfig[];
   managedSources?: ManagedSource[];
   onSave: (key: SSHKey) => void;
   onUpdate: (key: SSHKey) => void;
@@ -91,6 +101,7 @@ const KeychainManager: React.FC<KeychainManagerProps> = ({
   hosts = [],
   proxyProfiles = [],
   customGroups = [],
+  groupConfigs = [],
   managedSources = [],
   onSave,
   onUpdate,
@@ -1068,11 +1079,22 @@ echo $3 >> "$FILE"`);
                       // Execute the script directly - SSH exec handles multiline commands
                       const command = scriptWithVars;
 
+                      // Resolve the effective host (applying group
+                      // defaults), so algorithm settings inherited from
+                      // the group reach the bridge — the host object on
+                      // its own only carries explicitly set fields.
+                      const effectiveExportHost = exportHost.group
+                        ? applyGroupDefaults(
+                          exportHost,
+                          resolveGroupDefaults(exportHost.group, groupConfigs),
+                        )
+                        : applyGroupDefaults(exportHost, {});
+
                       // Execute via SSH
                       const result = await execCommand({
-                        hostname: exportHost.hostname,
+                        hostname: effectiveExportHost.hostname,
                         username: exportAuth.username,
-                        port: exportHost.port || 22,
+                        port: effectiveExportHost.port || 22,
                         password: exportPassword,
                         privateKey: exportKeyAuth.privateKey,
                         certificate: exportAuth.key?.certificate,
@@ -1081,10 +1103,17 @@ echo $3 >> "$FILE"`);
                         keySource: exportAuth.key?.source,
                         passphrase: exportKeyAuth.passphrase,
                         identityFilePaths: exportKeyAuth.identityFilePaths,
+                        // Carry the effective host's algorithm settings
+                        // (host value falling back to its group default)
+                        // so the one-off SSH exec honors them just like
+                        // the interactive terminal does.
+                        legacyAlgorithms: effectiveExportHost.legacyAlgorithms,
+                        skipEcdsaHostKey: effectiveExportHost.skipEcdsaHostKey,
+                        algorithmOverrides: effectiveExportHost.algorithms,
                         command,
                         timeout: 30000,
                         enableKeyboardInteractive: true,
-                        sessionId: `export-key:${exportHost.id}:${panel.key.id}`,
+                        sessionId: `export-key:${effectiveExportHost.id}:${panel.key.id}`,
                       });
 
                       // Check result - code 0, null, or undefined with no stderr is success
@@ -1168,9 +1197,14 @@ echo $3 >> "$FILE"`);
                     </Label>
                     <div className="flex items-center gap-2 p-2 rounded-md bg-secondary/50 border border-border/60">
                       <FileKey size={14} className="text-primary shrink-0" />
-                      <span className="text-xs font-mono truncate" title={draftKey.filePath}>
-                        {draftKey.filePath}
-                      </span>
+                      <Tooltip>
+                        <TooltipTrigger asChild>
+                          <span className="text-xs font-mono truncate cursor-default">
+                            {draftKey.filePath}
+                          </span>
+                        </TooltipTrigger>
+                        <TooltipContent>{draftKey.filePath}</TooltipContent>
+                      </Tooltip>
                     </div>
                   </div>
                 )}

components/KnownHostsManager.tsx

@@ -22,6 +22,7 @@ import React, {
 import { useI18n } from "../application/i18n/I18nProvider";
 import { useKnownHostsBackend } from "../application/state/useKnownHostsBackend";
 import { useStoredViewMode, ViewMode } from "../application/state/useStoredViewMode";
+import { fingerprintFromPublicKey } from "../domain/knownHosts";
 import { STORAGE_KEY_VAULT_KNOWN_HOSTS_VIEW_MODE } from "../infrastructure/config/storageKeys";
 import { logger } from "../lib/logger";
 import { cn } from "../lib/utils";
@@ -37,6 +38,7 @@ import { Dropdown, DropdownContent, DropdownTrigger } from "./ui/dropdown";
 import { Input } from "./ui/input";
 import { ScrollArea } from "./ui/scroll-area";
 import { SortDropdown, SortMode } from "./ui/sort-dropdown";
+import { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
 import { toast } from "./ui/toast";
 
 interface KnownHostsManagerProps {
@@ -79,12 +81,20 @@ const parseKnownHostsFile = (content: string): KnownHost[] => {
         hostname = "(hashed)";
       }
 
+      const fullPublicKey = `${keyType} ${publicKey}`;
+      // Compute the fingerprint up front so the SSH host verifier can match
+      // against this record directly instead of re-deriving on every connect —
+      // the re-derivation path is where the false "fingerprint changed"
+      // warnings in #972 originated.
+      const fingerprint = fingerprintFromPublicKey(fullPublicKey);
+
       parsed.push({
         id: `kh-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`,
         hostname,
         port,
         keyType,
-        publicKey: `${keyType} ${publicKey}`,
+        publicKey: fullPublicKey,
+        fingerprint: fingerprint || undefined,
         discoveredAt: Date.now(),
       });
     } catch {
@@ -122,27 +132,35 @@ const HostItem = React.memo<HostItemProps>(
               {/* Quick action buttons on hover */}
               <div className="absolute top-1 right-1 flex gap-0.5 opacity-0 group-hover:opacity-100 transition-opacity">
                 {!converted && (
-                  <button
-                    className="p-1 rounded hover:bg-primary/20 text-primary"
-                    onClick={(e) => {
-                      e.stopPropagation();
-                      onConvertToHost(knownHost);
-                    }}
-                    title={t("action.convertToHost")}
-                  >
-                    <ArrowRight size={12} />
-                  </button>
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <button
+                        className="p-1 rounded hover:bg-primary/20 text-primary"
+                        onClick={(e) => {
+                          e.stopPropagation();
+                          onConvertToHost(knownHost);
+                        }}
+                      >
+                        <ArrowRight size={12} />
+                      </button>
+                    </TooltipTrigger>
+                    <TooltipContent>{t("action.convertToHost")}</TooltipContent>
+                  </Tooltip>
                 )}
-                <button
-                  className="p-1 rounded hover:bg-destructive/20 text-destructive"
-                  onClick={(e) => {
-                    e.stopPropagation();
-                    onDelete(knownHost.id);
-                  }}
-                  title={t("action.remove")}
-                >
-                  <Trash2 size={12} />
-                </button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <button
+                      className="p-1 rounded hover:bg-destructive/20 text-destructive"
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        onDelete(knownHost.id);
+                      }}
+                    >
+                      <Trash2 size={12} />
+                    </button>
+                  </TooltipTrigger>
+                  <TooltipContent>{t("action.remove")}</TooltipContent>
+                </Tooltip>
               </div>
               <div className="flex items-center gap-3 h-full">
                 <div className="h-11 w-11 rounded-xl bg-primary/10 text-primary flex items-center justify-center flex-shrink-0">
@@ -193,18 +211,22 @@ const HostItem = React.memo<HostItemProps>(
             </div>
             <div className="flex items-center gap-1 opacity-0 group-hover:opacity-100 transition-opacity">
               {!converted && (
-                <Button
-                  variant="ghost"
-                  size="icon"
-                  className="h-8 w-8"
-                  onClick={(e) => {
-                    e.stopPropagation();
-                    onConvertToHost(knownHost);
-                  }}
-                  title={t("action.convertToHost")}
-                >
-                  <ArrowRight size={14} />
-                </Button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className="h-8 w-8"
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        onConvertToHost(knownHost);
+                      }}
+                    >
+                      <ArrowRight size={14} />
+                    </Button>
+                  </TooltipTrigger>
+                  <TooltipContent>{t("action.convertToHost")}</TooltipContent>
+                </Tooltip>
               )}
             </div>
           </div>

components/LogView.tsx

@@ -277,7 +277,6 @@ const LogViewComponent: React.FC<LogViewProps> = ({
                             className="gap-1.5 h-8 px-2"
                             onClick={handleExport}
                             disabled={isExporting}
-                            title={t("logView.export")}
                         >
                             <Download size={14} />
                             <span className="text-xs">{t("logView.export")}</span>
@@ -290,7 +289,6 @@ const LogViewComponent: React.FC<LogViewProps> = ({
                         size="sm"
                         className="gap-1.5 h-8 px-2"
                         onClick={() => setThemeModalOpen(true)}
-                        title={t("logView.customizeAppearance")}
                     >
                         <Palette size={14} />
                         <span className="text-xs">{t("logView.appearance")}</span>

components/QuickSwitcher.tsx

@@ -298,7 +298,6 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
                     onClose();
                   }}
                   className="ml-auto inline-flex items-center gap-1 text-[11px] text-muted-foreground hover:text-foreground border border-border rounded px-1.5 py-0.5 transition-colors hover:bg-muted/50"
-                  title="New Workspace"
                 >
                   <Plus size={11} />
                   <span>New Workspace</span>

components/ScriptsSidePanel.tsx

@@ -249,15 +249,19 @@ 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>
+        <Tooltip>
+          <TooltipTrigger asChild>
+            <button
+              type="button"
+              onClick={handleAddSnippet}
+              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>
+          </TooltipTrigger>
+          <TooltipContent>{t('snippets.action.newSnippet')}</TooltipContent>
+        </Tooltip>
       </div>
 
       {/* Content */}

components/SerialConnectModal.tsx

@@ -20,6 +20,7 @@ import {
 } from './ui/dialog';
 import { Input } from './ui/input';
 import { Label } from './ui/label';
+import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from './ui/select';
 import { Collapsible, CollapsibleContent, CollapsibleTrigger } from './ui/collapsible';
 
 interface SerialPort {
@@ -262,35 +263,41 @@ export const SerialConnectModal: React.FC<SerialConnectModalProps> = ({
               <div className="grid grid-cols-2 gap-4">
                 <div className="space-y-2">
                   <Label htmlFor="data-bits">{t('serial.field.dataBits')}</Label>
-                  <select
-                    id="data-bits"
-                    value={dataBits}
-                    onChange={(e) => setDataBits(parseInt(e.target.value, 10) as 5 | 6 | 7 | 8)}
-                    className="w-full h-10 px-3 rounded-md border border-input bg-background text-sm focus:outline-none focus:ring-2 focus:ring-ring"
+                  <Select
+                    value={String(dataBits)}
+                    onValueChange={(v) => setDataBits(parseInt(v, 10) as 5 | 6 | 7 | 8)}
                   >
-                    {DATA_BITS.map((bits) => (
-                      <option key={bits} value={bits}>
-                        {bits}
-                      </option>
-                    ))}
-                  </select>
+                    <SelectTrigger id="data-bits">
+                      <SelectValue />
+                    </SelectTrigger>
+                    <SelectContent>
+                      {DATA_BITS.map((bits) => (
+                        <SelectItem key={bits} value={String(bits)}>
+                          {bits}
+                        </SelectItem>
+                      ))}
+                    </SelectContent>
+                  </Select>
                 </div>
 
                 {/* Stop Bits */}
                 <div className="space-y-2">
                   <Label htmlFor="stop-bits">{t('serial.field.stopBits')}</Label>
-                  <select
-                    id="stop-bits"
-                    value={stopBits}
-                    onChange={(e) => setStopBits(parseFloat(e.target.value) as 1 | 1.5 | 2)}
-                    className="w-full h-10 px-3 rounded-md border border-input bg-background text-sm focus:outline-none focus:ring-2 focus:ring-ring"
+                  <Select
+                    value={String(stopBits)}
+                    onValueChange={(v) => setStopBits(parseFloat(v) as 1 | 1.5 | 2)}
                   >
-                    {STOP_BITS.map((bits) => (
-                      <option key={bits} value={bits}>
-                        {bits}
-                      </option>
-                    ))}
-                  </select>
+                    <SelectTrigger id="stop-bits">
+                      <SelectValue />
+                    </SelectTrigger>
+                    <SelectContent>
+                      {STOP_BITS.map((bits) => (
+                        <SelectItem key={bits} value={String(bits)}>
+                          {bits}
+                        </SelectItem>
+                      ))}
+                    </SelectContent>
+                  </Select>
                   {isStopBits15 && (
                     <p className="text-xs text-yellow-500">
                       {t('serial.field.stopBits15Warning')}
@@ -302,35 +309,41 @@ export const SerialConnectModal: React.FC<SerialConnectModalProps> = ({
               {/* Parity */}
               <div className="space-y-2">
                 <Label htmlFor="parity">{t('serial.field.parity')}</Label>
-                <select
-                  id="parity"
+                <Select
                   value={parity}
-                  onChange={(e) => setParity(e.target.value as SerialParity)}
-                  className="w-full h-10 px-3 rounded-md border border-input bg-background text-sm focus:outline-none focus:ring-2 focus:ring-ring"
+                  onValueChange={(v) => setParity(v as SerialParity)}
                 >
-                  {PARITY_OPTIONS.map((option) => (
-                    <option key={option} value={option}>
-                      {t(`serial.parity.${option}`)}
-                    </option>
-                  ))}
-                </select>
+                  <SelectTrigger id="parity">
+                    <SelectValue />
+                  </SelectTrigger>
+                  <SelectContent>
+                    {PARITY_OPTIONS.map((option) => (
+                      <SelectItem key={option} value={option}>
+                        {t(`serial.parity.${option}`)}
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
               </div>
 
               {/* Flow Control */}
               <div className="space-y-2">
                 <Label htmlFor="flow-control">{t('serial.field.flowControl')}</Label>
-                <select
-                  id="flow-control"
+                <Select
                   value={flowControl}
-                  onChange={(e) => setFlowControl(e.target.value as SerialFlowControl)}
-                  className="w-full h-10 px-3 rounded-md border border-input bg-background text-sm focus:outline-none focus:ring-2 focus:ring-ring"
+                  onValueChange={(v) => setFlowControl(v as SerialFlowControl)}
                 >
-                  {FLOW_CONTROL_OPTIONS.map((option) => (
-                    <option key={option} value={option}>
-                      {t(`serial.flowControl.${option}`)}
-                    </option>
-                  ))}
-                </select>
+                  <SelectTrigger id="flow-control">
+                    <SelectValue />
+                  </SelectTrigger>
+                  <SelectContent>
+                    {FLOW_CONTROL_OPTIONS.map((option) => (
+                      <SelectItem key={option} value={option}>
+                        {t(`serial.flowControl.${option}`)}
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
               </div>
 
               {/* Terminal Options */}

components/SerialHostDetailsPanel.tsx

@@ -12,6 +12,7 @@ import { Button } from './ui/button';
 import { Combobox, ComboboxOption, MultiCombobox } from './ui/combobox';
 import { Input } from './ui/input';
 import { Label } from './ui/label';
+import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from './ui/select';
 import { Collapsible, CollapsibleContent, CollapsibleTrigger } from './ui/collapsible';
 import {
   AsidePanel,
@@ -291,35 +292,41 @@ export const SerialHostDetailsPanel: React.FC<SerialHostDetailsPanelProps> = ({
             <div className="grid grid-cols-2 gap-4">
               <div className="space-y-2">
                 <Label htmlFor="data-bits">{t('serial.field.dataBits')}</Label>
-                <select
-                  id="data-bits"
-                  value={dataBits}
-                  onChange={(e) => setDataBits(parseInt(e.target.value, 10) as 5 | 6 | 7 | 8)}
-                  className="w-full h-10 px-3 rounded-md border border-input bg-background text-sm focus:outline-none focus:ring-2 focus:ring-ring"
+                <Select
+                  value={String(dataBits)}
+                  onValueChange={(v) => setDataBits(parseInt(v, 10) as 5 | 6 | 7 | 8)}
                 >
-                  {DATA_BITS.map((bits) => (
-                    <option key={bits} value={bits}>
-                      {bits}
-                    </option>
-                  ))}
-                </select>
+                  <SelectTrigger id="data-bits">
+                    <SelectValue />
+                  </SelectTrigger>
+                  <SelectContent>
+                    {DATA_BITS.map((bits) => (
+                      <SelectItem key={bits} value={String(bits)}>
+                        {bits}
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
               </div>
 
               {/* Stop Bits */}
               <div className="space-y-2">
                 <Label htmlFor="stop-bits">{t('serial.field.stopBits')}</Label>
-                <select
-                  id="stop-bits"
-                  value={stopBits}
-                  onChange={(e) => setStopBits(parseFloat(e.target.value) as 1 | 1.5 | 2)}
-                  className="w-full h-10 px-3 rounded-md border border-input bg-background text-sm focus:outline-none focus:ring-2 focus:ring-ring"
+                <Select
+                  value={String(stopBits)}
+                  onValueChange={(v) => setStopBits(parseFloat(v) as 1 | 1.5 | 2)}
                 >
-                  {STOP_BITS.map((bits) => (
-                    <option key={bits} value={bits}>
-                      {bits}
-                    </option>
-                  ))}
-                </select>
+                  <SelectTrigger id="stop-bits">
+                    <SelectValue />
+                  </SelectTrigger>
+                  <SelectContent>
+                    {STOP_BITS.map((bits) => (
+                      <SelectItem key={bits} value={String(bits)}>
+                        {bits}
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
                 {isStopBits15 && (
                   <p className="text-xs text-yellow-500">
                     {t('serial.field.stopBits15Warning')}
@@ -331,35 +338,41 @@ export const SerialHostDetailsPanel: React.FC<SerialHostDetailsPanelProps> = ({
             {/* Parity */}
             <div className="space-y-2">
               <Label htmlFor="parity">{t('serial.field.parity')}</Label>
-              <select
-                id="parity"
+              <Select
                 value={parity}
-                onChange={(e) => setParity(e.target.value as SerialParity)}
-                className="w-full h-10 px-3 rounded-md border border-input bg-background text-sm focus:outline-none focus:ring-2 focus:ring-ring"
+                onValueChange={(v) => setParity(v as SerialParity)}
               >
-                {PARITY_OPTIONS.map((option) => (
-                  <option key={option} value={option}>
-                    {t(`serial.parity.${option}`)}
-                  </option>
-                ))}
-              </select>
+                <SelectTrigger id="parity">
+                  <SelectValue />
+                </SelectTrigger>
+                <SelectContent>
+                  {PARITY_OPTIONS.map((option) => (
+                    <SelectItem key={option} value={option}>
+                      {t(`serial.parity.${option}`)}
+                    </SelectItem>
+                  ))}
+                </SelectContent>
+              </Select>
             </div>
 
             {/* Flow Control */}
             <div className="space-y-2">
               <Label htmlFor="flow-control">{t('serial.field.flowControl')}</Label>
-              <select
-                id="flow-control"
+              <Select
                 value={flowControl}
-                onChange={(e) => setFlowControl(e.target.value as SerialFlowControl)}
-                className="w-full h-10 px-3 rounded-md border border-input bg-background text-sm focus:outline-none focus:ring-2 focus:ring-ring"
+                onValueChange={(v) => setFlowControl(v as SerialFlowControl)}
               >
-                {FLOW_CONTROL_OPTIONS.map((option) => (
-                  <option key={option} value={option}>
-                    {t(`serial.flowControl.${option}`)}
-                  </option>
-                ))}
-              </select>
+                <SelectTrigger id="flow-control">
+                  <SelectValue />
+                </SelectTrigger>
+                <SelectContent>
+                  {FLOW_CONTROL_OPTIONS.map((option) => (
+                    <SelectItem key={option} value={option}>
+                      {t(`serial.flowControl.${option}`)}
+                    </SelectItem>
+                  ))}
+                </SelectContent>
+              </Select>
             </div>
 
             {/* Terminal Options */}

components/SettingsPage.tsx

@@ -12,6 +12,7 @@ import { useWindowControls } from "../application/state/useWindowControls";
 import { useUpdateCheck } from "../application/state/useUpdateCheck";
 import { useAIState } from "../application/state/useAIState";
 import { I18nProvider, useI18n } from "../application/i18n/I18nProvider";
+import { sanitizePortForwardingRulesForSync } from "../application/syncPayload";
 import SettingsApplicationTab from "./SettingsApplicationTab";
 import SettingsAppearanceTab from "./settings/tabs/SettingsAppearanceTab";
 import SettingsFileAssociationsTab from "./settings/tabs/SettingsFileAssociationsTab";
@@ -20,6 +21,7 @@ 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 { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
 
 const isMac = typeof navigator !== "undefined" && /Mac|iPhone|iPad/.test(navigator.platform);
 
@@ -49,6 +51,11 @@ type SettingsState = ReturnType<typeof useSettingsState>;
 
 const SettingsSyncTab = React.lazy(() => import("./settings/tabs/SettingsSyncTab"));
 
+const settingsTabTriggerClassName =
+    "w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors overflow-hidden";
+const settingsTabIconClassName = "shrink-0";
+const settingsTabLabelClassName = "min-w-0 truncate";
+
 const SettingsTerminalTabContainer: React.FC<{ settings: SettingsState }> = ({ settings }) => {
     const availableFonts = useAvailableFonts();
 
@@ -58,6 +65,12 @@ const SettingsTerminalTabContainer: React.FC<{ settings: SettingsState }> = ({ s
             setTerminalThemeId={settings.setTerminalThemeId}
             followAppTerminalTheme={settings.followAppTerminalTheme}
             setFollowAppTerminalTheme={settings.setFollowAppTerminalTheme}
+            terminalThemeDarkId={settings.terminalThemeDarkId}
+            setTerminalThemeDarkId={settings.setTerminalThemeDarkId}
+            terminalThemeLightId={settings.terminalThemeLightId}
+            setTerminalThemeLightId={settings.setTerminalThemeLightId}
+            lightUiThemeId={settings.lightUiThemeId}
+            darkUiThemeId={settings.darkUiThemeId}
             terminalFontFamilyId={settings.terminalFontFamilyId}
             setTerminalFontFamilyId={settings.setTerminalFontFamilyId}
             terminalFontSize={settings.terminalFontSize}
@@ -127,13 +140,7 @@ const SettingsSyncTabWithVault: React.FC<{ onSettingsApplied?: () => void }> = (
 
     // Strip transient runtime fields before passing to sync
     const portForwardingRulesForSync = useMemo(
-        () =>
-            portForwardingRules.map((rule) => ({
-                ...rule,
-                status: "inactive" as const,
-                error: undefined,
-                lastUsedAt: undefined,
-            })),
+        () => sanitizePortForwardingRulesForSync(portForwardingRules) ?? [],
         [portForwardingRules],
     );
 
@@ -187,13 +194,17 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                 <div className="flex items-center justify-between px-4 py-2">
                     <h1 className="text-lg font-semibold">{t("settings.title")}</h1>
                     {!isMac && (
-                        <button
-                            onClick={handleClose}
-                            className="app-no-drag w-8 h-8 flex items-center justify-center rounded-md hover:bg-destructive/20 hover:text-destructive transition-colors text-muted-foreground"
-                            title={t("common.close")}
-                        >
-                            <X size={16} />
-                        </button>
+                        <Tooltip>
+                            <TooltipTrigger asChild>
+                                <button
+                                    onClick={handleClose}
+                                    className="app-no-drag w-8 h-8 flex items-center justify-center rounded-md hover:bg-destructive/20 hover:text-destructive transition-colors text-muted-foreground"
+                                >
+                                    <X size={16} />
+                                </button>
+                            </TooltipTrigger>
+                            <TooltipContent>{t("common.close")}</TooltipContent>
+                        </Tooltip>
                     )}
                 </div>
             </div>
@@ -208,51 +219,59 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                     <TabsList className="flex flex-col h-auto bg-transparent gap-1 p-0 justify-start">
                         <TabsTrigger
                             value="application"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <AppWindow size={14} /> {t("settings.tab.application")}
+                            <AppWindow size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>{t("settings.tab.application")}</span>
                         </TabsTrigger>
                         <TabsTrigger
                             value="appearance"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <Palette size={14} /> {t("settings.tab.appearance")}
+                            <Palette size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>{t("settings.tab.appearance")}</span>
                         </TabsTrigger>
                         <TabsTrigger
                             value="terminal"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <TerminalSquare size={14} /> {t("settings.tab.terminal")}
+                            <TerminalSquare size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>{t("settings.tab.terminal")}</span>
                         </TabsTrigger>
                         <TabsTrigger
                             value="shortcuts"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <Keyboard size={14} /> {t("settings.tab.shortcuts")}
+                            <Keyboard size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>{t("settings.tab.shortcuts")}</span>
                         </TabsTrigger>
                         <TabsTrigger
                             value="file-associations"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <FileType size={14} /> {t("settings.tab.sftpFileAssociations")}
+                            <FileType size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>{t("settings.tab.sftpFileAssociations")}</span>
                         </TabsTrigger>
                         <TabsTrigger
                             value="ai"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <Sparkles size={14} /> AI
+                            <Sparkles size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>AI</span>
                         </TabsTrigger>
                         <TabsTrigger
                             value="sync"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <Cloud size={14} /> {t("settings.tab.syncCloud")}
+                            <Cloud size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>{t("settings.tab.syncCloud")}</span>
                         </TabsTrigger>
                         <TabsTrigger
                             value="system"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <HardDrive size={14} /> {t("settings.tab.system")}
+                            <HardDrive size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>{t("settings.tab.system")}</span>
                         </TabsTrigger>
                     </TabsList>
                 </div>

components/SftpSidePanel.tsx

@@ -19,13 +19,14 @@ import { editorTabStore } from "../application/state/editorTabStore";
 import { releaseEditorTabSaveCoordinator } from "../application/state/editorTabSave";
 import { useSftpBackend } from "../application/state/useSftpBackend";
 import { useSftpFileAssociations } from "../application/state/useSftpFileAssociations";
-import { getParentPath } from "../application/state/sftp/utils";
+import { getParentPath, isConcreteTransferTargetPath } from "../application/state/sftp/utils";
 import { buildCacheKey } from "../application/state/sftp/sharedRemoteHostCache";
 import { logger } from "../lib/logger";
 import type { DropEntry } from "../lib/sftpFileUtils";
 import { Host, Identity, SSHKey } from "../types";
 import type { TransferTask } from "../types";
 import { toast } from "./ui/toast";
+import { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
 import { DistroAvatar } from "./DistroAvatar";
 
 import { SftpPaneView } from "./sftp/SftpPaneView";
@@ -133,6 +134,8 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
     mkdirLocal,
     deleteLocalFile,
     listLocalDir,
+    listDrives,
+    openPath,
   } = useSftpBackend();
 
   const sftpRef = useRef(sftp);
@@ -296,6 +299,7 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
     startStreamTransfer,
     getSftpIdForConnection: sftp.getSftpIdForConnection,
     listLocalFiles: listLocalDir,
+    listDrives,
   });
 
   const {
@@ -573,18 +577,35 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
 
   const handleRevealTransferTarget = useCallback(
     async (task: TransferTask) => {
+      if (!isConcreteTransferTargetPath(task)) return;
       const connection = sftpRef.current.leftPane.connection;
+      const revealPath = task.isDirectory ? task.targetPath : getParentPath(task.targetPath);
+
+      if (task.targetConnectionId === "local") {
+        try {
+          const result = await openPath(revealPath);
+          if (result.success) return;
+        } catch {
+          // Show the localized error below.
+        }
+        toast.error(t("sftp.transfers.openTargetFolderError"), "SFTP");
+        return;
+      }
+
       if (!connection || connection.isLocal) return;
 
-      const revealPath = task.isDirectory ? task.targetPath : getParentPath(task.targetPath);
       await sftpRef.current.navigateTo("left", revealPath, { force: true });
     },
-    [],
+    [openPath, t],
   );
 
   const canRevealTransferTarget = useCallback(
     (task: TransferTask) => {
       if (task.status !== "completed") return false;
+      if (!isConcreteTransferTargetPath(task)) return false;
+      if (task.targetConnectionId === "local") {
+        return true;
+      }
       if (task.direction !== "upload" && task.direction !== "remote-to-remote") return false;
 
       const connection = sftp.leftPane.connection;
@@ -605,6 +626,24 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
     [sftp.leftPane.connection],
   );
 
+  const canCopyTransferTargetPath = useCallback(
+    (task: TransferTask) => task.status === "completed" && isConcreteTransferTargetPath(task),
+    [],
+  );
+
+  const handleCopyTransferTargetPath = useCallback(
+    async (task: TransferTask) => {
+      if (!isConcreteTransferTargetPath(task)) return;
+      try {
+        await navigator.clipboard.writeText(task.targetPath);
+        toast.success(t("sftp.transfers.copyTargetPathSuccess"), "SFTP");
+      } catch {
+        toast.error(t("sftp.transfers.copyTargetPathError"), "SFTP");
+      }
+    },
+    [t],
+  );
+
   // When the auto-connect effect defers a switch (active transfers or open
   // editor), the panel still operates on the current connection, not
   // activeHost.  Use the connected host for the header so the label matches
@@ -651,18 +690,22 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
                 size="sm"
                 className="h-5 w-5 rounded-sm shrink-0"
               />
-              <div
-                className="min-w-0 flex-1 max-w-[calc(100%-1.75rem)] text-[11px] leading-5 truncate"
-                title={`${displayHost.label} · ${(displayHost.username || "root")}@${formatHostPort(displayHost.hostname, displayHost.port || 22)}`}
-              >
-                <span className="font-medium">
-                  {displayHost.label}
-                </span>
-                <span className="mx-1 text-muted-foreground">·</span>
-                <span className="font-mono text-muted-foreground">
-                  {(displayHost.username || "root")}@{displayHost.hostname}:{displayHost.port || 22}
-                </span>
-              </div>
+              <Tooltip>
+                <TooltipTrigger asChild>
+                  <div className="min-w-0 flex-1 max-w-[calc(100%-1.75rem)] text-[11px] leading-5 truncate cursor-default">
+                    <span className="font-medium">
+                      {displayHost.label}
+                    </span>
+                    <span className="mx-1 text-muted-foreground">·</span>
+                    <span className="font-mono text-muted-foreground">
+                      {(displayHost.username || "root")}@{displayHost.hostname}:{displayHost.port || 22}
+                    </span>
+                  </div>
+                </TooltipTrigger>
+                <TooltipContent>
+                  {`${displayHost.label} · ${(displayHost.username || "root")}@${formatHostPort(displayHost.hostname, displayHost.port || 22)}`}
+                </TooltipContent>
+              </Tooltip>
             </div>
           </div>
         )}
@@ -699,6 +742,8 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
           allTransfers={sftp.transfers}
           canRevealTransferTarget={canRevealTransferTarget}
           onRevealTransferTarget={handleRevealTransferTarget}
+          canCopyTransferTargetPath={canCopyTransferTargetPath}
+          onCopyTransferTargetPath={handleCopyTransferTargetPath}
         />
       </div>
 
@@ -708,6 +753,10 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
           sftp={sftp}
           visibleTransfers={visibleTransfers}
           showTransferQueue={false}
+          canRevealTransferTarget={canRevealTransferTarget}
+          onRevealTransferTarget={handleRevealTransferTarget}
+          canCopyTransferTargetPath={canCopyTransferTargetPath}
+          onCopyTransferTargetPath={handleCopyTransferTargetPath}
           showHostPickerLeft={showHostPickerLeft}
           showHostPickerRight={showHostPickerRight}
           hostSearchLeft={hostSearchLeft}

components/SftpTransferItem.test.tsx

@@ -136,3 +136,31 @@ test("keeps reveal target and child toggle as separate buttons", () => {
   assert.match(markup, /aria-expanded="false"/);
   assert.match(markup, /aria-controls="children-transfer-1"/);
 });
+
+test("renders explicit target actions for completed local downloads", () => {
+  const markup = renderTransferItem(
+    {
+      ...baseTask,
+      id: "download-1",
+      fileName: "report.pdf",
+      sourcePath: "/remote/report.pdf",
+      targetPath: "/Users/alice/Downloads/report.pdf",
+      targetConnectionId: "local",
+      direction: "download",
+      status: "completed",
+      error: undefined,
+      transferredBytes: 1024,
+    },
+    {
+      canRevealTarget: true,
+      onRevealTarget: () => {},
+      canCopyTargetPath: true,
+      onCopyTargetPath: () => {},
+    },
+  );
+
+  assert.match(markup, /aria-label="Open target folder: report\.pdf"/);
+  assert.match(markup, /aria-label="Copy target path: report\.pdf"/);
+  assert.match(markup, /lucide-folder-open/);
+  assert.match(markup, /lucide-clipboard-copy/);
+});

components/SftpView.tsx

@@ -19,12 +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 { getParentPath, isConcreteTransferTargetPath } from "../application/state/sftp/utils";
 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, ProxyProfile, SSHKey } from "../types";
+import { Host, Identity, ProxyProfile, SSHKey, TransferTask } from "../types";
 import { resolveGroupDefaults, applyGroupDefaults } from "../domain/groupConfig";
 import { materializeHostProxyProfile } from "../domain/proxyProfiles";
 import { useSftpFileAssociations } from "../application/state/useSftpFileAssociations";
@@ -136,6 +137,8 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
     mkdirLocal,
     deleteLocalFile,
     listLocalDir,
+    listDrives,
+    openPath,
   } = useSftpBackend();
 
   // Store sftp in a ref so callbacks can access the latest instance
@@ -262,6 +265,7 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
     startStreamTransfer,
     getSftpIdForConnection: sftp.getSftpIdForConnection,
     listLocalFiles: listLocalDir,
+    listDrives,
   });
 
   const visibleTransfers = useMemo(
@@ -269,6 +273,75 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
     [sftp.transfers],
   );
 
+  const getTransferTargetDirectory = useCallback(
+    (task: TransferTask) => (task.isDirectory ? task.targetPath : getParentPath(task.targetPath)),
+    [],
+  );
+
+  const findRemoteTransferTargetTab = useCallback((task: TransferTask) => {
+    const state = sftpRef.current;
+    for (const side of ["left", "right"] as const) {
+      const tabs = side === "left" ? state.leftTabs.tabs : state.rightTabs.tabs;
+      const pane = tabs.find((tab) => tab.connection?.id === task.targetConnectionId);
+      if (pane?.connection && !pane.connection.isLocal) {
+        return { side, tabId: pane.id };
+      }
+    }
+    return null;
+  }, []);
+
+  const canRevealTransferTarget = useCallback(
+    (task: TransferTask) => {
+      if (task.status !== "completed") return false;
+      if (!isConcreteTransferTargetPath(task)) return false;
+      if (task.targetConnectionId === "local") {
+        return true;
+      }
+      return !!findRemoteTransferTargetTab(task);
+    },
+    [findRemoteTransferTargetTab],
+  );
+
+  const handleRevealTransferTarget = useCallback(
+    async (task: TransferTask) => {
+      if (!isConcreteTransferTargetPath(task)) return;
+      const targetDirectory = getTransferTargetDirectory(task);
+      if (task.targetConnectionId === "local") {
+        try {
+          const result = await openPath(targetDirectory);
+          if (result.success) return;
+        } catch {
+          // Show the localized error below.
+        }
+        toast.error(t("sftp.transfers.openTargetFolderError"), "SFTP");
+        return;
+      }
+
+      const targetTab = findRemoteTransferTargetTab(task);
+      if (!targetTab) return;
+      await sftpRef.current.navigateTo(targetTab.side, targetDirectory, { force: true, tabId: targetTab.tabId });
+    },
+    [findRemoteTransferTargetTab, getTransferTargetDirectory, openPath, t],
+  );
+
+  const canCopyTransferTargetPath = useCallback(
+    (task: TransferTask) => task.status === "completed" && isConcreteTransferTargetPath(task),
+    [],
+  );
+
+  const handleCopyTransferTargetPath = useCallback(
+    async (task: TransferTask) => {
+      if (!isConcreteTransferTargetPath(task)) return;
+      try {
+        await navigator.clipboard.writeText(task.targetPath);
+        toast.success(t("sftp.transfers.copyTargetPathSuccess"), "SFTP");
+      } catch {
+        toast.error(t("sftp.transfers.copyTargetPathError"), "SFTP");
+      }
+    },
+    [t],
+  );
+
   const containerStyle: React.CSSProperties = isActive
     ? {}
     : {
@@ -473,6 +546,10 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
           hosts={effectiveHosts}
           sftp={sftp}
           visibleTransfers={visibleTransfers}
+          canRevealTransferTarget={canRevealTransferTarget}
+          onRevealTransferTarget={handleRevealTransferTarget}
+          canCopyTransferTargetPath={canCopyTransferTargetPath}
+          onCopyTransferTargetPath={handleCopyTransferTargetPath}
           showHostPickerLeft={showHostPickerLeft}
           showHostPickerRight={showHostPickerRight}
           hostSearchLeft={hostSearchLeft}

components/SnippetsManager.tsx

@@ -745,21 +745,25 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
           actions={
             <>
               {editingSnippet.id && (
-                <Button
-                  variant="ghost"
-                  size="icon"
-                  className="h-8 w-8 text-destructive hover:text-destructive"
-                  onClick={() => {
-                    const id = editingSnippet.id;
-                    if (!id) return;
-                    onDelete(id);
-                    handleClosePanel();
-                  }}
-                  aria-label={t('common.delete')}
-                  title={t('common.delete')}
-                >
-                  <Trash2 size={16} />
-                </Button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className="h-8 w-8 text-destructive hover:text-destructive"
+                      onClick={() => {
+                        const id = editingSnippet.id;
+                        if (!id) return;
+                        onDelete(id);
+                        handleClosePanel();
+                      }}
+                      aria-label={t('common.delete')}
+                    >
+                      <Trash2 size={16} />
+                    </Button>
+                  </TooltipTrigger>
+                  <TooltipContent>{t('common.delete')}</TooltipContent>
+                </Tooltip>
               )}
               <Button
                 variant="ghost"
@@ -839,18 +843,22 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
               <div className="flex items-center justify-between">
                 <p className="text-xs font-semibold text-muted-foreground">{t('snippets.field.shortkey')}</p>
                 {editingSnippet.shortkey && (
-                  <Button
-                    variant="ghost"
-                    size="sm"
-                    className="h-6 px-2 text-xs"
-                    onClick={() => {
-                      setEditingSnippet(prev => ({ ...prev, shortkey: undefined }));
-                      setShortkeyError(null);
-                    }}
-                    title={t('snippets.shortkey.clear')}
-                  >
-                    <RotateCcw size={12} />
-                  </Button>
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <Button
+                        variant="ghost"
+                        size="sm"
+                        className="h-6 px-2 text-xs"
+                        onClick={() => {
+                          setEditingSnippet(prev => ({ ...prev, shortkey: undefined }));
+                          setShortkeyError(null);
+                        }}
+                      >
+                        <RotateCcw size={12} />
+                      </Button>
+                    </TooltipTrigger>
+                    <TooltipContent>{t('snippets.shortkey.clear')}</TooltipContent>
+                  </Tooltip>
                 )}
               </div>
               <button
@@ -1269,7 +1277,6 @@ const SnippetsManager: React.FC<SnippetsManagerProps> = ({
                 value={newPackageName}
                 onChange={(e) => setNewPackageName(e.target.value)}
                 onKeyDown={(e) => e.key === 'Enter' && createPackage()}
-                title="Package names can contain letters, numbers, hyphens, underscores, and forward slashes. Can optionally start with /"
               />
               <p className="text-[11px] text-muted-foreground">{t('snippets.packageDialog.hint')}</p>
             </div>

components/SyncStatusButton.tsx

@@ -35,6 +35,7 @@ import {
     PopoverTrigger,
 } from './ui/popover';
 import { toast } from './ui/toast';
+import { Tooltip, TooltipContent, TooltipTrigger } from './ui/tooltip';
 
 // ============================================================================
 // Provider Icons
@@ -169,26 +170,30 @@ export const SyncStatusButton: React.FC<SyncStatusButtonProps> = ({
 
     return (
         <Popover open={isOpen} onOpenChange={setIsOpen}>
-            <PopoverTrigger asChild>
-                <Button
-                    variant="ghost"
-                    size="icon"
-                    className={cn(
-                        "h-8 w-8 relative text-muted-foreground hover:text-foreground app-no-drag",
-                        className
-                    )}
-                    title={t('sync.cloudSync')}
-                >
-                    {getButtonIcon()}
+            <Tooltip>
+                <TooltipTrigger asChild>
+                    <PopoverTrigger asChild>
+                        <Button
+                            variant="ghost"
+                            size="icon"
+                            className={cn(
+                                "h-8 w-8 relative text-muted-foreground hover:text-foreground app-no-drag",
+                                className
+                            )}
+                        >
+                            {getButtonIcon()}
 
-                    {/* Status indicator dot */}
-                    <StatusIndicator
-                        status={overallStatus}
-                        size="sm"
-                        className="absolute top-0.5 right-0.5 ring-2 ring-background"
-                    />
-                </Button>
-            </PopoverTrigger>
+                            {/* Status indicator dot */}
+                            <StatusIndicator
+                                status={overallStatus}
+                                size="sm"
+                                className="absolute top-0.5 right-0.5 ring-2 ring-background"
+                            />
+                        </Button>
+                    </PopoverTrigger>
+                </TooltipTrigger>
+                <TooltipContent>{t('sync.cloudSync')}</TooltipContent>
+            </Tooltip>
 
             <PopoverContent
                 key={syncStateKey}
@@ -222,16 +227,20 @@ export const SyncStatusButton: React.FC<SyncStatusButtonProps> = ({
                         </div>
 
                         {onOpenSettings && (
-                            <button
-                                onClick={() => {
-                                    setIsOpen(false);
-                                    onOpenSettings();
-                                }}
-                                className="p-1 rounded hover:bg-muted transition-colors"
-                                title={t('sync.settings')}
-                            >
-                                <Settings size={14} className="text-muted-foreground" />
-                            </button>
+                            <Tooltip>
+                                <TooltipTrigger asChild>
+                                    <button
+                                        onClick={() => {
+                                            setIsOpen(false);
+                                            onOpenSettings();
+                                        }}
+                                        className="p-1 rounded hover:bg-muted transition-colors"
+                                    >
+                                        <Settings size={14} className="text-muted-foreground" />
+                                    </button>
+                                </TooltipTrigger>
+                                <TooltipContent>{t('sync.settings')}</TooltipContent>
+                            </Tooltip>
                         )}
                     </div>
                 </div>

components/Terminal.tsx

@@ -5,8 +5,8 @@ import { SearchAddon } from "@xterm/addon-search";
 import "@xterm/xterm/css/xterm.css";
 import { Cpu, Copy, HardDrive, Maximize2, MemoryStick, Radio, ArrowDownToLine, ArrowUpFromLine } from "lucide-react";
 import React, { memo, useCallback, useEffect, useLayoutEffect, useMemo, useRef, useState } from "react";
-import ReactDOM from "react-dom";
 import { useI18n } from "../application/i18n/I18nProvider";
+import { detectLocalOs } from "../lib/localShell";
 import { logger } from "../lib/logger";
 import { cn, normalizeLineEndings, wrapBracketedPaste } from "../lib/utils";
 import {
@@ -29,12 +29,13 @@ import {
   applyCustomAccentToTerminalTheme,
   resolveHostTerminalThemeId,
 } from "../domain/terminalAppearance";
-import { classifyDistroId } from "../domain/host";
+import { classifyDistroId, shouldProbeSessionCwd } from "../domain/host";
 import { resolveHostAuth } from "../domain/sshAuth";
 import { useTerminalBackend } from "../application/state/useTerminalBackend";
 // SFTPModal removed - SFTP is now handled by SftpSidePanel in TerminalLayer
 import { Button } from "./ui/button";
 import { HoverCard, HoverCardContent, HoverCardTrigger } from "./ui/hover-card";
+import { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
 import { toast } from "./ui/toast";
 import { useAvailableFonts } from "../application/state/fontStore";
 import { composeFontFamilyStack, type SupportedPlatform } from "../infrastructure/config/cjkFonts";
@@ -48,11 +49,20 @@ import { TerminalToolbar } from "./terminal/TerminalToolbar";
 import { TerminalComposeBar } from "./terminal/TerminalComposeBar";
 import { TerminalContextMenu } from "./terminal/TerminalContextMenu";
 import { TerminalSearchBar } from "./terminal/TerminalSearchBar";
+import { ZmodemOverwriteDialog } from "./terminal/ZmodemOverwriteDialog";
 import { ZmodemProgressIndicator } from "./terminal/ZmodemProgressIndicator";
+import { createReplaySafeTerminalLogSanitizer } from "./terminal/replaySafeTerminalLog";
+import { createConnectionLogBuffer } from "./terminal/connectionLogBuffer";
 import { useZmodemTransfer } from "./terminal/hooks/useZmodemTransfer";
 import { createTerminalSessionStarters, type PendingAuth } from "./terminal/runtime/createTerminalSessionStarters";
 import { createXTermRuntime, primaryFontFamily, type XTermRuntime } from "./terminal/runtime/createXTermRuntime";
 import { applyUserCursorPreference } from "./terminal/runtime/cursorPreference";
+import { terminalAltKeyOptions } from "./terminal/runtime/altKeyOptions";
+import {
+  createPromptLineBreakState,
+  type PromptLineBreakState,
+} from "./terminal/runtime/promptLineBreak";
+import { recordTerminalCommandExecution } from "./terminal/runtime/terminalCommandExecution";
 import { shouldPreserveTerminalFocusOnMouseDown } from "./terminal/toolbarFocus";
 import { preserveTerminalViewportInScrollback } from "./terminal/clearTerminalViewport";
 import { XTERM_PERFORMANCE_CONFIG } from "../infrastructure/config/xtermPerformance";
@@ -61,7 +71,10 @@ import { useTerminalContextActions } from "./terminal/hooks/useTerminalContextAc
 import { useTerminalAuthState } from "./terminal/hooks/useTerminalAuthState";
 import { useServerStats } from "./terminal/hooks/useServerStats";
 import { extractDropEntries, getPathForFile, DropEntry } from "../lib/sftpFileUtils";
-import { useTerminalAutocomplete, AutocompletePopup } from "./terminal/autocomplete";
+import { TerminalAutocomplete } from "./terminal/TerminalAutocomplete";
+import { createTerminalCwdTracker, resolvePreferredTerminalCwd } from "./terminal/sftpCwd";
+
+const MAX_CONNECTION_LOG_DATA_CHARS = 1_000_000;
 
 /**
  * Extract unique root paths from drop entries for local terminal path insertion.
@@ -162,6 +175,7 @@ interface TerminalProps {
     pendingUploadEntries?: DropEntry[],
     sourceSessionId?: string,
   ) => void;
+  onTerminalCwdChange?: (sessionId: string, cwd: string | null) => void;
   onOpenScripts?: () => void;
   onOpenTheme?: () => void;
   isBroadcastEnabled?: boolean;
@@ -252,6 +266,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   onSplitHorizontal,
   onSplitVertical,
   onOpenSftp,
+  onTerminalCwdChange,
   onOpenScripts,
   onOpenTheme,
   isBroadcastEnabled,
@@ -272,6 +287,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const serializeAddonRef = useRef<SerializeAddon | null>(null);
   const searchAddonRef = useRef<SearchAddon | null>(null);
   const xtermRuntimeRef = useRef<XTermRuntime | null>(null);
+  const terminalCwdTracker = useMemo(() => createTerminalCwdTracker(), []);
   const knownCwdRef = useRef<string | undefined>(undefined);
   const disposeDataRef = useRef<(() => void) | null>(null);
   const disposeExitRef = useRef<(() => void) | null>(null);
@@ -284,8 +300,11 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   // cancelled retry can't fire a startNewSession after the fact.
   const retryTokenRef = useRef<symbol | null>(null);
   const terminalDataCapturedRef = useRef(false);
+  const connectionLogBufferRef = useRef(createConnectionLogBuffer(MAX_CONNECTION_LOG_DATA_CHARS));
+  const terminalLogSanitizerRef = useRef(createReplaySafeTerminalLogSanitizer());
   const onTerminalDataCaptureRef = useRef(onTerminalDataCapture);
   const commandBufferRef = useRef<string>("");
+  const promptLineBreakStateRef = useRef<PromptLineBreakState>(createPromptLineBreakState());
   const [hasMouseTracking, setHasMouseTracking] = useState(false);
   const mouseTrackingRef = useRef(false);
   const serialLineBufferRef = useRef<string>("");
@@ -299,6 +318,26 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const lastFittedSizeRef = useRef<{ width: number; height: number } | null>(null);
   const fontWeightFixupDoneRef = useRef(false);
 
+  const captureTerminalLogData = useCallback((data: string) => {
+    const replaySafeData = terminalLogSanitizerRef.current.append(data);
+    if (!replaySafeData) return;
+    connectionLogBufferRef.current.append(replaySafeData);
+  }, []);
+
+  const finalizeTerminalLogData = useCallback(() => {
+    const replaySafeData = terminalLogSanitizerRef.current.finish();
+    if (replaySafeData) {
+      connectionLogBufferRef.current.append(replaySafeData);
+    }
+    return connectionLogBufferRef.current.toString();
+  }, []);
+
+  const writeLocalTerminalData = useCallback((data: string) => {
+    if (!data) return;
+    captureTerminalLogData(data);
+    termRef.current?.write(data);
+  }, [captureTerminalLogData]);
+
   useEffect(() => {
     if (xtermRuntimeRef.current) {
       // Merge global rules with host-level rules
@@ -345,10 +384,13 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const snippetsRef = useRef(snippets);
   snippetsRef.current = snippets;
 
-  // Autocomplete handler refs (set after hook initialization)
+  // Autocomplete handler refs — populated by <TerminalAutocomplete> so the
+  // xterm runtime (and a few effects here) can drive the hook without making
+  // Terminal re-render on every suggestion update.
   const autocompleteKeyEventRef = useRef<((e: KeyboardEvent) => boolean) | undefined>(undefined);
   const autocompleteInputRef = useRef<((data: string) => void) | undefined>(undefined);
   const autocompleteRepositionRef = useRef<(() => void) | undefined>(undefined);
+  const autocompleteCloseRef = useRef<(() => void) | undefined>(undefined);
 
   const terminalBackend = useTerminalBackend();
   const { resizeSession, setSessionEncoding } = terminalBackend;
@@ -436,20 +478,20 @@ const TerminalComponent: React.FC<TerminalProps> = ({
             const line = serialLineBufferRef.current + "\r";
             terminalBackend.writeToSession(id, line);
             serialLineBufferRef.current = "";
-            if (serialConfig?.localEcho) termRef.current?.write("\r\n");
+            if (serialConfig?.localEcho) writeLocalTerminalData("\r\n");
           } else if (ch === "\x15") {
             if (serialConfig?.localEcho && serialLineBufferRef.current.length > 0) {
-              termRef.current?.write("\b \b".repeat(serialLineBufferRef.current.length));
+              writeLocalTerminalData("\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");
+              if (serialConfig?.localEcho) writeLocalTerminalData("\b \b");
             }
           } else if (ch.charCodeAt(0) >= 32) {
             serialLineBufferRef.current += ch;
-            if (serialConfig?.localEcho) termRef.current?.write(ch);
+            if (serialConfig?.localEcho) writeLocalTerminalData(ch);
           }
         }
         // Still update commandBuffer and broadcast for serial line mode
@@ -459,9 +501,9 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         terminalBackend.writeToSession(id, text);
         for (const ch of text) {
           if (ch === "\r") {
-            termRef.current?.write("\r\n");
+            writeLocalTerminalData("\r\n");
           } else if (ch.charCodeAt(0) >= 32) {
-            termRef.current?.write(ch);
+            writeLocalTerminalData(ch);
           }
         }
       } else {
@@ -476,9 +518,14 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       // 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 = "";
+          const rawCommand = commandBufferRef.current;
+          recordTerminalCommandExecution(rawCommand, {
+            host,
+            sessionId,
+            onCommandExecuted,
+            commandBufferRef,
+            promptLineBreakStateRef,
+          }, termRef.current);
         } else if (ch === "\x15") {
           // Ctrl+U: clear line — reset command buffer (fuzzy match sends this)
           commandBufferRef.current = "";
@@ -492,35 +539,58 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     }
   };
 
-  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,
-  });
+  // Autocomplete config — the hook itself lives in <TerminalAutocomplete> so
+  // its state updates don't re-render this component (see render below).
+  // For local protocol the effective OS is the client OS: synthetic fallback
+  // hosts (TerminalLayer) and saved-host defaults (HostDetailsPanel) both
+  // stamp os: "linux", which mis-routes the autocomplete clear sequence to
+  // Ctrl-U on Windows where cmd/PowerShell render it literally (#1112).
+  const autocompleteHostOs: "linux" | "windows" | "macos" = host.protocol === "local"
+    ? detectLocalOs(navigator.userAgent || navigator.platform)
+    : (host.os || "linux");
+  const autocompleteSettings = 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;
 
-  // 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;
+  const resolveSftpInitialPath = useCallback(async (): Promise<string | undefined> => {
+    const cwd = await resolvePreferredTerminalCwd({
+      rendererCwd: terminalCwdTracker.getRendererCwd(),
+      sessionId: sessionRef.current,
+      getSessionPwd: (id) => terminalBackend.getSessionPwd(id),
+    });
+    return cwd ?? undefined;
+  }, [terminalBackend, terminalCwdTracker]);
+
+  const clearTerminalCwd = useCallback(() => {
+    terminalCwdTracker.clearRendererCwd();
+    knownCwdRef.current = undefined;
+    onTerminalCwdChange?.(sessionId, null);
+  }, [onTerminalCwdChange, sessionId, terminalCwdTracker]);
 
   useEffect(() => {
-    knownCwdRef.current = undefined;
-  }, [sessionId, host.id]);
+    clearTerminalCwd();
+    return clearTerminalCwd;
+  }, [clearTerminalCwd, host.id]);
+
+  // Classify the host's device family from the *detected* distro and the
+  // explicit deviceType only. This intentionally bypasses
+  // getEffectiveHostDistro(): the manual distro override (`distroMode:
+  // 'manual'` + `manualDistro`) is a purely cosmetic icon choice, and a
+  // user who pinned e.g. an "ubuntu" icon on what is actually a Cisco /
+  // Huawei host must not silently re-enable POSIX-shell probes against it.
+  // Several features gate on this — the working-directory probe below, the
+  // /etc/os-release probe, and the periodic server-stats poll (#674) —
+  // because each opens an extra exec channel that strict network-device
+  // CLIs reject or log as a new AAA session, and on Huawei VRP closes the
+  // whole session (#1043).
+  const detectedDeviceClass = classifyDistroId(host.distro);
+  const isNetworkDevice =
+    host.deviceType === 'network' || detectedDeviceClass === 'network-device';
 
   useEffect(() => {
     if (host.protocol === "local" || host.protocol === "serial" || host.protocol === "telnet") {
@@ -530,10 +600,21 @@ const TerminalComponent: React.FC<TerminalProps> = ({
 
     let cancelled = false;
     const timer = setTimeout(async () => {
-      if (!sessionRef.current) return;
+      const id = sessionRef.current;
+      if (!id) return;
       try {
-        const result = await terminalBackend.getSessionPwd(sessionRef.current);
-        if (!cancelled && result.success && result.cwd) {
+        // The pwd probe opens an extra POSIX-shell exec channel, which strict
+        // network-device CLIs like Huawei VRP answer by closing the whole
+        // session (#1043). Skip it for known network devices; for a brand-new
+        // host (distro not classified yet on the first connect) consult the
+        // SSH banner, which is captured for free at handshake time.
+        const info = await terminalBackend.getSessionRemoteInfo?.(id);
+        if (cancelled || id !== sessionRef.current) return;
+        if (!shouldProbeSessionCwd({ isNetworkDevice, remoteSshVersion: info?.remoteSshVersion })) {
+          return;
+        }
+        const result = await terminalBackend.getSessionPwd(id);
+        if (!cancelled && !terminalCwdTracker.getRendererCwd() && result.success && result.cwd) {
           knownCwdRef.current = result.cwd;
         }
       } catch {
@@ -545,37 +626,22 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       cancelled = true;
       clearTimeout(timer);
     };
-  }, [host.protocol, status, terminalBackend]);
+  }, [host.protocol, status, terminalBackend, terminalCwdTracker, isNetworkDevice]);
 
   useEffect(() => {
     if (!isVisible) {
-      autocompleteClosePopup();
+      autocompleteCloseRef.current?.();
     }
-  }, [isVisible, autocompleteClosePopup]);
+  }, [isVisible]);
 
   // 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) — only for Linux/macOS, and never
-  // for hosts classified as network devices (either via explicit
-  // deviceType='network' or via SSH banner detection that populated
-  // host.distro with a network-vendor ID). See #674: polling the stats
-  // command on Cisco / Huawei / Juniper etc. generates one AAA session
-  // log entry per poll because each exec channel is counted as a new
-  // session on those devices.
-  //
-  // IMPORTANT: this gating must NOT go through getEffectiveHostDistro()
-  // because that honors the manual distro override (`distroMode: 'manual'`
-  // + `manualDistro`) which is purely a cosmetic icon choice. A user who
-  // pinned an "ubuntu" icon on what is actually a Cisco host would
-  // otherwise silently re-enable the polling loop and re-introduce the
-  // AAA log flood this patch is meant to eliminate. The display icon can
-  // still be overridden (see DistroAvatar) — gating uses the raw detected
-  // `host.distro` and the explicit `host.deviceType` only.
-  const detectedDeviceClass = classifyDistroId(host.distro);
-  const isNetworkDevice =
-    host.deviceType === 'network' || detectedDeviceClass === 'network-device';
+  // Server stats (CPU, Memory, Disk) — only for Linux/macOS, never for
+  // network devices. See isNetworkDevice above for why the gating uses the
+  // raw detected distro / explicit deviceType (not getEffectiveHostDistro);
+  // #674 covers the AAA-log-flood motivation for stats specifically.
   const isSupportedOs =
     !isNetworkDevice &&
     (host.os === 'linux' || host.os === 'macos' || detectedDeviceClass === 'linux-like');
@@ -753,12 +819,15 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     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 replaySafeLogData = finalizeTerminalLogData();
+    const capturedData = replaySafeLogData || data;
+    captureHandler(capturedSessionId, capturedData);
+  }, [finalizeTerminalLogData]);
 
   const cleanupSession = () => {
     disposeDataRef.current?.();
@@ -810,6 +879,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     fitAddonRef,
     serializeAddonRef,
     pendingAuthRef,
+    promptLineBreakStateRef,
     updateStatus,
     setStatus,
     setError,
@@ -821,6 +891,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     setChainProgress,
     t,
     onSessionAttached: (id: string) => {
+      clearTerminalCwd();
       // SSH: always sync. Its backend starts in utf-8 regardless of
       // host.charset, so the push is what keeps the UI state aligned
       // across reconnects — including localhost SSH targets, hence
@@ -844,8 +915,12 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         setSessionEncoding(id, terminalEncodingRef.current);
       }
     },
-    onSessionExit,
+    onSessionExit: (closedSessionId, evt) => {
+      clearTerminalCwd();
+      onSessionExit?.(closedSessionId, evt);
+    },
     onTerminalDataCapture: handleTerminalDataCaptureOnce,
+    onTerminalLogData: captureTerminalLogData,
     onOsDetected,
     onCommandExecuted,
     sessionLog,
@@ -855,6 +930,8 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   useEffect(() => {
     let disposed = false;
     terminalDataCapturedRef.current = false;
+    connectionLogBufferRef.current.reset();
+    terminalLogSanitizerRef.current = createReplaySafeTerminalLogSanitizer();
     setError(null);
     hasConnectedRef.current = false;
     pendingOutputScrollRef.current = false;
@@ -862,6 +939,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     setShowLogs(false);
     setIsCancelling(false);
     setIsDisconnectedDialogDismissed(false);
+    promptLineBreakStateRef.current = createPromptLineBreakState();
 
     const boot = async () => {
       try {
@@ -886,13 +964,17 @@ const TerminalComponent: React.FC<TerminalProps> = ({
           statusRef,
           onCommandExecuted,
           commandBufferRef,
+          promptLineBreakStateRef,
           setIsSearchOpen,
           // Serial-specific options
           serialLocalEcho: serialConfig?.localEcho,
           serialLineMode: serialConfig?.lineMode,
           serialLineBufferRef,
+          onTerminalLogData: captureTerminalLogData,
           onCwdChange: (cwd: string) => {
+            terminalCwdTracker.setRendererCwd(cwd);
             knownCwdRef.current = cwd;
+            onTerminalCwdChange?.(sessionId, cwd);
           },
           onOsc52ReadRequest: handleOsc52ReadRequest,
           // Autocomplete integration
@@ -1157,11 +1239,18 @@ const TerminalComponent: React.FC<TerminalProps> = ({
             : 0;
         termRef.current.options.scrollOnUserInput =
           shouldEnableNativeUserInputAutoScroll(terminalSettings);
-        termRef.current.options.altClickMovesCursor = !terminalSettings.altAsMeta;
+        const altKeyOpts = terminalAltKeyOptions(terminalSettings.altAsMeta);
+        termRef.current.options.macOptionIsMeta = altKeyOpts.macOptionIsMeta;
+        termRef.current.options.altClickMovesCursor = altKeyOpts.altClickMovesCursor;
         termRef.current.options.wordSeparator = terminalSettings.wordSeparators;
         termRef.current.options.ignoreBracketedPasteMode = terminalSettings.disableBracketedPaste ?? false;
       }
 
+      // Changing the font can leave the WebGL renderer drawing stale glyphs from
+      // the old metrics (xterm.js #3280), surfacing as garbled text (issue #1049).
+      // Clear the texture atlas so glyphs re-rasterize with the new font.
+      xtermRuntimeRef.current?.clearTextureAtlas();
+
       if (isVisibleRef.current) {
         setTimeout(() => safeFit({ force: true, requireVisible: true }), 50);
       } else {
@@ -1174,6 +1263,18 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     if (!isVisible) return;
     const timer = setTimeout(() => {
       safeFit({ requireVisible: true });
+      // Recover the WebGL renderer now that this tab is visible again. Hidden
+      // panes stay mounted off-screen (visibility:hidden) so each keeps a live
+      // WebGL context; creating another terminal's context — or the GPU dropping
+      // a non-composited off-screen canvas — can leave this terminal's drawing
+      // buffer corrupted ("花屏", issue #1063). Because a hidden pane keeps its
+      // dimensions, becoming visible triggers no resize and therefore no redraw,
+      // so the corruption persists until the user resizes the window. Force the
+      // same recovery a resize performs: clear the texture atlas (no-op on the
+      // DOM renderer) and synchronously repaint every row.
+      xtermRuntimeRef.current?.clearTextureAtlas();
+      const visibleTerm = termRef.current;
+      if (visibleTerm) forceSyncRenderAfterResize(visibleTerm);
       if (pendingOutputScrollRef.current) {
         termRef.current?.scrollToBottom();
         if (typeof requestAnimationFrame === "function") {
@@ -1395,6 +1496,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
 
     const handleContextMenuCapture = (e: MouseEvent) => {
       if (!mouseTrackingRef.current) return;
+      if (statusRef.current !== 'connected') return;
       e.preventDefault();
       e.stopImmediatePropagation();
 
@@ -1418,7 +1520,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     };
 
     const handleMouseUpCapture = (e: MouseEvent) => {
-      if (e.button === 2 && mouseTrackingRef.current) {
+      if (e.button === 2 && mouseTrackingRef.current && statusRef.current === 'connected') {
         e.stopImmediatePropagation();
       }
     };
@@ -1486,10 +1588,21 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     }
     if (!noAutoRun) data = `${data}\r`;
 
+    // Broadcast the exact bytes the active session receives so peers mirror it,
+    // including the bracketed-paste wrapping and the auto-run \r. Broadcasting
+    // the raw (un-wrapped) form would let a multi-line noAutoRun snippet run
+    // line-by-line on peers, since handleBroadcastInput writes bytes directly
+    // without re-wrapping. Without broadcasting at all, accepting a snippet in
+    // broadcast mode would clear peer input (the clear keystrokes already go
+    // through the broadcast-aware path) but never send the command.
+    if (isBroadcastEnabledRef.current && onBroadcastInputRef.current) {
+      onBroadcastInputRef.current(data, sessionId);
+    }
+
     terminalBackend.writeToSession(id, data);
     scrollToBottomAfterProgrammaticInput(data);
     term.focus();
-  }, [scrollToBottomAfterProgrammaticInput, terminalBackend]);
+  }, [scrollToBottomAfterProgrammaticInput, terminalBackend, sessionId]);
 
   // Only register the snippet executor once the terminal session is ready.
   // Before that, TerminalLayer falls back to raw writeToSession which is the
@@ -1505,11 +1618,12 @@ const TerminalComponent: React.FC<TerminalProps> = ({
 
   const terminalContextActions = useTerminalContextActions({
     termRef,
+    sourceSessionId: sessionId,
     sessionRef,
-    terminalBackend,
     onHasSelectionChange: setHasSelection,
-    disableBracketedPasteRef,
     scrollOnPasteRef,
+    isBroadcastEnabledRef,
+    onBroadcastInputRef,
   });
   // Kept fresh on every render so the mouseTracking capture handler at
   // handleContextMenuCapture (which is bound once per sessionId) can
@@ -1529,17 +1643,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const handleOpenSFTP = async () => {
     if (onOpenSftp) {
       // Delegate to parent (TerminalLayer) for shared SFTP side panel
-      let initialPath: string | undefined = undefined;
-      if (sessionRef.current) {
-        try {
-          const result = await terminalBackend.getSessionPwd(sessionRef.current);
-          if (result.success && result.cwd) {
-            initialPath = result.cwd;
-          }
-        } catch {
-          // Silently fail
-        }
-      }
+      const initialPath = await resolveSftpInitialPath();
       onOpenSftp(host, initialPath, undefined, sessionId);
       return;
     }
@@ -1752,17 +1856,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       } else {
         // Remote terminal: Trigger SFTP upload via parent
         if (onOpenSftp) {
-          let initialPath: string | undefined = undefined;
-          if (sessionRef.current) {
-            try {
-              const result = await terminalBackend.getSessionPwd(sessionRef.current);
-              if (result.success && result.cwd) {
-                initialPath = result.cwd;
-              }
-            } catch {
-              // Silently fail
-            }
-          }
+          const initialPath = await resolveSftpInitialPath();
           onOpenSftp(host, initialPath, dropEntries, sessionId);
         }
       }
@@ -1821,6 +1915,8 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       onSelectWord={terminalContextActions.onSelectWord}
       onSplitHorizontal={onSplitHorizontal}
       onSplitVertical={onSplitVertical}
+      isReconnectable={status === "disconnected"}
+      onReconnect={handleRetry}
       onClose={inWorkspace ? () => onCloseSession?.(sessionId) : undefined}
     >
       <div
@@ -1879,21 +1975,25 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                 )}
               />
               {host.protocol !== "local" && host.hostname && host.hostname !== "localhost" && (
-                <button
-                  type="button"
-                  className="ml-0.5 p-0.5 rounded hover:bg-[color:var(--terminal-toolbar-btn-hover)] transition-colors opacity-60 hover:opacity-100 flex-shrink-0"
-                  onClick={() => {
-                    void navigator.clipboard.writeText(host.hostname).then(() => {
-                      toast.success(t("terminal.statusbar.copyHostname.toast", { hostname: host.hostname }));
-                    }).catch(() => {
-                      toast.error(t("terminal.statusbar.copyHostname.error"));
-                    });
-                  }}
-                  title={t("terminal.statusbar.copyHostname.tooltip", { hostname: host.hostname })}
-                  aria-label={t("terminal.statusbar.copyHostname.label")}
-                >
-                  <Copy size={10} />
-                </button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <button
+                      type="button"
+                      className="ml-0.5 p-0.5 rounded hover:bg-[color:var(--terminal-toolbar-btn-hover)] transition-colors opacity-60 hover:opacity-100 flex-shrink-0"
+                      onClick={() => {
+                        void navigator.clipboard.writeText(host.hostname).then(() => {
+                          toast.success(t("terminal.statusbar.copyHostname.toast", { hostname: host.hostname }));
+                        }).catch(() => {
+                          toast.error(t("terminal.statusbar.copyHostname.error"));
+                        });
+                      }}
+                      aria-label={t("terminal.statusbar.copyHostname.label")}
+                    >
+                      <Copy size={10} />
+                    </button>
+                  </TooltipTrigger>
+                  <TooltipContent side="bottom">{t("terminal.statusbar.copyHostname.tooltip", { hostname: host.hostname })}</TooltipContent>
+                </Tooltip>
               )}
             </div>
             {/* Server Stats Display */}
@@ -1904,7 +2004,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                   <HoverCardTrigger asChild>
                     <button
                       className="flex items-center gap-0.5 hover:opacity-100 opacity-80 transition-opacity cursor-pointer flex-shrink-0"
-                      title={t("terminal.serverStats.cpu")}
+                      aria-label={t("terminal.serverStats.cpu")}
                     >
                       <Cpu size={10} className="flex-shrink-0" />
                       <span>
@@ -1973,7 +2073,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                   <HoverCardTrigger asChild>
                     <button
                       className="flex items-center gap-0.5 hover:opacity-100 opacity-80 transition-opacity cursor-pointer flex-shrink-0"
-                      title={t("terminal.serverStats.memory")}
+                      aria-label={t("terminal.serverStats.memory")}
                     >
                       <MemoryStick size={10} className="flex-shrink-0" />
                       <span>
@@ -1995,12 +2095,11 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                       {serverStats.memTotal !== null && (
                         <div className="space-y-1.5">
                           <div className="w-full h-3 bg-muted rounded overflow-hidden flex">
-                            {/* Used (green) */}
+                            {/* Used (green) — exact value shown in legend below */}
                             {serverStats.memUsed !== null && serverStats.memUsed > 0 && (
                               <div
                                 className="h-full bg-emerald-500"
                                 style={{ width: `${(serverStats.memUsed / serverStats.memTotal) * 100}%` }}
-                                title={`${t("terminal.serverStats.memUsed")}: ${(serverStats.memUsed / 1024).toFixed(1)}G`}
                               />
                             )}
                             {/* Buffers (blue) */}
@@ -2008,7 +2107,6 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                               <div
                                 className="h-full bg-blue-500"
                                 style={{ width: `${(serverStats.memBuffers / serverStats.memTotal) * 100}%` }}
-                                title={`${t("terminal.serverStats.memBuffers")}: ${(serverStats.memBuffers / 1024).toFixed(1)}G`}
                               />
                             )}
                             {/* Cached (amber/orange) */}
@@ -2016,7 +2114,6 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                               <div
                                 className="h-full bg-amber-500"
                                 style={{ width: `${(serverStats.memCached / serverStats.memTotal) * 100}%` }}
-                                title={`${t("terminal.serverStats.memCached")}: ${(serverStats.memCached / 1024).toFixed(1)}G`}
                               />
                             )}
                           </div>
@@ -2050,7 +2147,6 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                               <div
                                 className="h-full bg-rose-500"
                                 style={{ width: `${(serverStats.swapUsed / serverStats.swapTotal) * 100}%` }}
-                                title={`${t("terminal.serverStats.swapUsed")}: ${(serverStats.swapUsed / 1024).toFixed(1)}G`}
                               />
                             )}
                           </div>
@@ -2083,9 +2179,14 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                                     style={{ width: `${Math.min(100, proc.memPercent * 2)}%` }}
                                   />
                                 </div>
-                                <span className="flex-shrink-0 font-mono truncate max-w-[140px]" title={proc.command}>
-                                  {proc.command.split('/').pop()?.split(' ')[0] || proc.command}
-                                </span>
+                                <Tooltip>
+                                  <TooltipTrigger asChild>
+                                    <span className="flex-shrink-0 font-mono truncate max-w-[140px] cursor-default">
+                                      {proc.command.split('/').pop()?.split(' ')[0] || proc.command}
+                                    </span>
+                                  </TooltipTrigger>
+                                  <TooltipContent>{proc.command}</TooltipContent>
+                                </Tooltip>
                               </div>
                             ))}
                           </div>
@@ -2099,7 +2200,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                   <HoverCardTrigger asChild>
                     <button
                       className="flex items-center gap-0.5 hover:opacity-100 opacity-80 transition-opacity cursor-pointer flex-shrink-0"
-                      title={t("terminal.serverStats.disk")}
+                      aria-label={t("terminal.serverStats.disk")}
                     >
                       <HardDrive size={10} className="flex-shrink-0" />
                       <span className={cn(
@@ -2127,9 +2228,14 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                           {serverStats.disks.map((disk, index) => (
                             <div key={index} className="flex flex-col gap-1 min-w-[180px]">
                               <div className="flex items-center justify-between gap-4">
-                                <span className="text-[10px] text-muted-foreground font-mono truncate max-w-[120px]" title={disk.mountPoint}>
-                                  {disk.mountPoint}
-                                </span>
+                                <Tooltip>
+                                  <TooltipTrigger asChild>
+                                    <span className="text-[10px] text-muted-foreground font-mono truncate max-w-[120px] cursor-default">
+                                      {disk.mountPoint}
+                                    </span>
+                                  </TooltipTrigger>
+                                  <TooltipContent>{disk.mountPoint}</TooltipContent>
+                                </Tooltip>
                                 <span className={cn(
                                   "text-[11px] font-medium whitespace-nowrap",
                                   disk.percent >= 90 ? "text-red-400" : disk.percent >= 80 ? "text-amber-400" : "text-emerald-400"
@@ -2161,7 +2267,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                     <HoverCardTrigger asChild>
                       <button
                         className="flex items-center gap-1 hover:opacity-100 opacity-80 transition-opacity cursor-pointer flex-shrink-0"
-                        title={t("terminal.serverStats.network")}
+                        aria-label={t("terminal.serverStats.network")}
                       >
                         <ArrowDownToLine size={9} className="flex-shrink-0 text-emerald-400" />
                         <span>{formatNetSpeed(serverStats.netRxSpeed)}</span>
@@ -2205,40 +2311,48 @@ const TerminalComponent: React.FC<TerminalProps> = ({
             <div className="flex-1" />
             <div className="flex items-center gap-0.5 flex-shrink-0">
               {inWorkspace && onToggleBroadcast && (
-                <Button
-                  variant="secondary"
-                  size="icon"
-                  className={cn(
-                    "h-6 w-6 p-0 shadow-none border-none text-[color:var(--terminal-toolbar-fg)]",
-                    "bg-transparent hover:bg-transparent",
-                    isBroadcastEnabled && "text-green-500",
-                  )}
-                  onClick={onToggleBroadcast}
-                  title={
-                    isBroadcastEnabled
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <Button
+                      variant="secondary"
+                      size="icon"
+                      className={cn(
+                        "h-6 w-6 p-0 shadow-none border-none text-[color:var(--terminal-toolbar-fg)]",
+                        "bg-transparent hover:bg-transparent",
+                        isBroadcastEnabled && "text-green-500",
+                      )}
+                      onClick={onToggleBroadcast}
+                      aria-label={
+                        isBroadcastEnabled
+                          ? t("terminal.toolbar.broadcastDisable")
+                          : t("terminal.toolbar.broadcastEnable")
+                      }
+                    >
+                      <Radio size={12} />
+                    </Button>
+                  </TooltipTrigger>
+                  <TooltipContent side="bottom">
+                    {isBroadcastEnabled
                       ? t("terminal.toolbar.broadcastDisable")
-                      : t("terminal.toolbar.broadcastEnable")
-                  }
-                  aria-label={
-                    isBroadcastEnabled
-                      ? t("terminal.toolbar.broadcastDisable")
-                      : t("terminal.toolbar.broadcastEnable")
-                  }
-                >
-                  <Radio size={12} />
-                </Button>
+                      : t("terminal.toolbar.broadcastEnable")}
+                  </TooltipContent>
+                </Tooltip>
               )}
               {inWorkspace && !isFocusMode && onExpandToFocus && (
-                <Button
-                  variant="secondary"
-                  size="icon"
-                  className="h-6 w-6 p-0 shadow-none border-none text-[color:var(--terminal-toolbar-fg)] bg-transparent hover:bg-transparent"
-                  onClick={onExpandToFocus}
-                  title={t("terminal.toolbar.focusMode")}
-                  aria-label={t("terminal.toolbar.focusMode")}
-                >
-                  <Maximize2 size={12} />
-                </Button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <Button
+                      variant="secondary"
+                      size="icon"
+                      className="h-6 w-6 p-0 shadow-none border-none text-[color:var(--terminal-toolbar-fg)] bg-transparent hover:bg-transparent"
+                      onClick={onExpandToFocus}
+                      aria-label={t("terminal.toolbar.focusMode")}
+                    >
+                      <Maximize2 size={12} />
+                    </Button>
+                  </TooltipTrigger>
+                  <TooltipContent side="bottom">{t("terminal.toolbar.focusMode")}</TooltipContent>
+                </Tooltip>
               )}
               {renderControls({ showClose: inWorkspace })}
             </div>
@@ -2271,29 +2385,29 @@ const TerminalComponent: React.FC<TerminalProps> = ({
             }}
           />
 
-          {/* 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,
-            )
-          }
+          {/* Autocomplete — owns the hook + popup in its own component so
+              suggestion/selection updates don't re-render Terminal. Mounted
+              unconditionally; it gates the popup on `visible` internally. */}
+          <TerminalAutocomplete
+            termRef={termRef}
+            sessionId={sessionId}
+            hostId={host.id}
+            hostOs={autocompleteHostOs}
+            settings={autocompleteSettings}
+            protocol={host.protocol}
+            getCwd={() => terminalCwdTracker.getRendererCwd() ?? knownCwdRef.current}
+            onAcceptText={(text) => autocompleteAcceptTextRef.current?.(text)}
+            snippets={snippets}
+            onAcceptSnippet={(snippet) => executeSnippetCommand(snippet.command, snippet.noAutoRun)}
+            visible={isVisible}
+            themeColors={effectiveTheme.colors}
+            containerRef={containerRef}
+            searchBarOffset={isSearchOpen ? 64 : 30}
+            keyEventRef={autocompleteKeyEventRef}
+            inputRef={autocompleteInputRef}
+            repositionRef={autocompleteRepositionRef}
+            closeRef={autocompleteCloseRef}
+          />
 
           {/* OSC-52 clipboard read prompt */}
           {osc52ReadPromptVisible && (
@@ -2384,6 +2498,13 @@ const TerminalComponent: React.FC<TerminalProps> = ({
               />
             </div>
           )}
+          {/* ZMODEM overwrite conflict dialog */}
+          {zmodem.overwriteRequest && (
+            <ZmodemOverwriteDialog
+              filename={zmodem.overwriteRequest.filename}
+              onRespond={zmodem.respondOverwrite}
+            />
+          )}
         </div>
 
         {/* Compose Bar (solo sessions only; workspace uses TerminalLayer's global bar) */}

components/TerminalLayer.memo.test.tsx

@@ -35,6 +35,8 @@ const baseProps = {
   onAddKnownHost: () => {},
   onToggleWorkspaceViewMode: () => {},
   onSetWorkspaceFocusedSession: () => {},
+  isBroadcastEnabled: () => false,
+  onToggleBroadcast: () => {},
   onSplitSession: () => {},
   toggleScriptsSidePanelRef: { current: null },
 };
@@ -96,3 +98,23 @@ test("TerminalLayer re-renders when proxy profiles change", () => {
     false,
   );
 });
+
+test("TerminalLayer re-renders when broadcast state changes", () => {
+  assert.equal(
+    terminalLayerAreEqual(
+      baseProps as never,
+      { ...baseProps, isBroadcastEnabled: () => true } as never,
+    ),
+    false,
+  );
+});
+
+test("TerminalLayer re-renders when broadcast toggle handler changes", () => {
+  assert.equal(
+    terminalLayerAreEqual(
+      baseProps as never,
+      { ...baseProps, onToggleBroadcast: () => {} } as never,
+    ),
+    false,
+  );
+});

components/TextEditorModal.tsx

@@ -73,7 +73,7 @@ interface TextEditorModalProps {
   onPromoteToTab?: (snapshot: TextEditorModalSnapshot) => void;
 }
 
-export const TextEditorModal: React.FC<TextEditorModalProps> = ({
+const TextEditorModal: React.FC<TextEditorModalProps> = ({
   open,
   onClose,
   fileName,

components/ThemeList.tsx

@@ -2,15 +2,16 @@
  * Shared theme list component used by both ThemeSelectPanel and ThemeSelectModal
  */
 import React, { memo, useMemo } from 'react';
-import { Check } from 'lucide-react';
+import { Check, Wand2 } from 'lucide-react';
 import { useI18n } from '../application/i18n/I18nProvider';
 import { TERMINAL_THEMES, USER_VISIBLE_TERMINAL_THEMES, isUiMatchTerminalThemeId } from '../infrastructure/config/terminalThemes';
+import { TERMINAL_THEME_AUTO } from '../domain/terminalAppearance';
 import { useCustomThemes } from '../application/state/customThemeStore';
 import { cn } from '../lib/utils';
 import { TerminalTheme } from '../types';
 
 // Memoized theme item component
-export const ThemeItem = memo(({
+const ThemeItem = memo(({
     theme,
     isSelected,
     onSelect
@@ -53,13 +54,18 @@ ThemeItem.displayName = 'ThemeItem';
 interface ThemeListProps {
     selectedThemeId: string;
     onSelect: (themeId: string) => void;
+    /** Restrict the list to a single type; omit to show both sections. */
+    filterType?: 'dark' | 'light';
+    /** Render an "Auto (match app theme)" entry at the top. */
+    showAutoOption?: boolean;
 }
 
-export const ThemeList: React.FC<ThemeListProps> = ({ selectedThemeId, onSelect }) => {
+export const ThemeList: React.FC<ThemeListProps> = ({ selectedThemeId, onSelect, filterType, showAutoOption }) => {
     const { t } = useI18n();
     const customThemes = useCustomThemes();
     const deletedSelectedTheme = useMemo(
         () => (selectedThemeId
+            && selectedThemeId !== TERMINAL_THEME_AUTO
             && !isUiMatchTerminalThemeId(selectedThemeId)
             && !TERMINAL_THEMES.some((theme) => theme.id === selectedThemeId)
             && !customThemes.some((theme) => theme.id === selectedThemeId)
@@ -80,8 +86,33 @@ export const ThemeList: React.FC<ThemeListProps> = ({ selectedThemeId, onSelect
         return { darkThemes: dark, lightThemes: light };
     }, []);
 
+    const visibleCustomThemes = filterType
+        ? customThemes.filter(theme => theme.type === filterType)
+        : customThemes;
+    const isAutoSelected = selectedThemeId === TERMINAL_THEME_AUTO;
+
     return (
         <>
+            {showAutoOption && (
+                <button
+                    onClick={() => onSelect(TERMINAL_THEME_AUTO)}
+                    className={cn(
+                        'w-full flex items-center gap-3 px-3 py-2.5 mb-3 rounded-md text-left transition-all',
+                        isAutoSelected ? 'bg-primary/10' : 'hover:bg-muted',
+                    )}
+                >
+                    <div className="w-12 h-8 rounded-[4px] flex-shrink-0 flex items-center justify-center border border-border/50 bg-gradient-to-br from-muted to-background">
+                        <Wand2 size={14} className="text-muted-foreground" />
+                    </div>
+                    <div className="flex-1 min-w-0">
+                        <div className={cn('text-sm font-medium truncate', isAutoSelected ? 'text-primary' : 'text-foreground')}>
+                            {t('settings.terminal.theme.auto')}
+                        </div>
+                        <div className="text-[10px] text-muted-foreground">{t('settings.terminal.theme.autoDesc')}</div>
+                    </div>
+                    {isAutoSelected && <Check size={16} className="text-primary flex-shrink-0" />}
+                </button>
+            )}
             {hiddenSelectedTheme && (
                 <div className="mb-4 rounded-lg border border-border/60 bg-muted/30 px-3 py-2.5">
                     <div className="text-[10px] uppercase tracking-wider text-muted-foreground mb-1 font-semibold">
@@ -105,6 +136,7 @@ export const ThemeList: React.FC<ThemeListProps> = ({ selectedThemeId, onSelect
                 </div>
             )}
             {/* Dark Themes Section */}
+            {(!filterType || filterType === 'dark') && (
             <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')}
@@ -120,8 +152,10 @@ export const ThemeList: React.FC<ThemeListProps> = ({ selectedThemeId, onSelect
                     ))}
                 </div>
             </div>
+            )}
 
             {/* Light Themes Section */}
+            {(!filterType || filterType === 'light') && (
             <div>
                 <div className="text-[10px] uppercase tracking-wider text-muted-foreground mb-2 font-semibold px-3">
                     {t('settings.terminal.themeModal.lightThemes')}
@@ -137,15 +171,16 @@ export const ThemeList: React.FC<ThemeListProps> = ({ selectedThemeId, onSelect
                     ))}
                 </div>
             </div>
+            )}
 
             {/* Custom Themes Section */}
-            {customThemes.length > 0 && (
+            {visibleCustomThemes.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 => (
+                        {visibleCustomThemes.map(theme => (
                             <ThemeItem
                                 key={theme.id}
                                 theme={theme}

components/TrafficDiagram.tsx

@@ -190,5 +190,3 @@ export const TrafficDiagram: React.FC<TrafficDiagramProps> = ({ type, isAnimatin
         </div>
     );
 };
-
-export default TrafficDiagram;

components/TrayPanel.tsx

@@ -4,6 +4,7 @@ import { useSessionState } from "../application/state/useSessionState";
 import { usePortForwardingState } from "../application/state/usePortForwardingState";
 import { useVaultState } from "../application/state/useVaultState";
 import { toast } from "./ui/toast";
+import { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
 import { cn } from "../lib/utils";
 import { useI18n } from "../application/i18n/I18nProvider";
 import { I18nProvider } from "../application/i18n/I18nProvider";
@@ -78,28 +79,31 @@ const WorkspaceGroup: React.FC<{
       {expanded && (
         <div className="ml-4 mt-0.5 space-y-0.5">
           {sessions.map((s) => (
-            <button
-              key={s.id}
-              title={s.hostLabel || s.label}
-              onClick={() => {
-                // Jump to session (using session id)
-                void jumpToSession(s.id);
-              }}
-              className={cn(
-                "w-full text-left px-2 py-1 rounded hover:bg-muted flex items-center justify-between text-sm",
-                s.status === "connected" ? "" : "text-muted-foreground",
-                activeTabId === s.id ? "bg-muted/60" : "",
-              )}
-            >
-              <span className="flex items-center gap-2 min-w-0">
-                <StatusDot
-                  status={s.status === "connected" ? "success" : s.status === "connecting" ? "warning" : "error"}
-                  spinning={s.status === "connecting"}
-                />
-                <span className="truncate">{s.hostLabel || s.label}</span>
-              </span>
-              <span className="ml-2 text-xs text-muted-foreground">{t(`tray.status.${s.status}`)}</span>
-            </button>
+            <Tooltip key={s.id}>
+              <TooltipTrigger asChild>
+                <button
+                  onClick={() => {
+                    // Jump to session (using session id)
+                    void jumpToSession(s.id);
+                  }}
+                  className={cn(
+                    "w-full text-left px-2 py-1 rounded hover:bg-muted flex items-center justify-between text-sm",
+                    s.status === "connected" ? "" : "text-muted-foreground",
+                    activeTabId === s.id ? "bg-muted/60" : "",
+                  )}
+                >
+                  <span className="flex items-center gap-2 min-w-0">
+                    <StatusDot
+                      status={s.status === "connected" ? "success" : s.status === "connecting" ? "warning" : "error"}
+                      spinning={s.status === "connecting"}
+                    />
+                    <span className="truncate">{s.hostLabel || s.label}</span>
+                  </span>
+                  <span className="ml-2 text-xs text-muted-foreground">{t(`tray.status.${s.status}`)}</span>
+                </button>
+              </TooltipTrigger>
+              <TooltipContent>{s.hostLabel || s.label}</TooltipContent>
+            </Tooltip>
           ))}
         </div>
       )}
@@ -219,17 +223,20 @@ const TrayPanelContent: React.FC<TrayPanelContentProps> = ({ terminalSettings })
           <span className="text-sm font-medium">Netcatty</span>
         </div>
         <div className="flex items-center gap-1">
-          <button
-            className="p-1 rounded hover:bg-muted text-muted-foreground hover:text-foreground"
-            onClick={handleOpenMain}
-            title={t("tray.openMainWindow")}
-          >
-            <Maximize2 size={14} />
-          </button>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <button
+                className="p-1 rounded hover:bg-muted text-muted-foreground hover:text-foreground"
+                onClick={handleOpenMain}
+              >
+                <Maximize2 size={14} />
+              </button>
+            </TooltipTrigger>
+            <TooltipContent>{t("tray.openMainWindow")}</TooltipContent>
+          </Tooltip>
           <button
             className="p-1 rounded hover:bg-muted text-muted-foreground hover:text-foreground"
             onClick={handleClose}
-            title="Close"
           >
             <X size={14} />
           </button>
@@ -277,27 +284,30 @@ const TrayPanelContent: React.FC<TrayPanelContentProps> = ({ terminalSettings })
                 ))}
                 {/* Solo sessions */}
                 {soloSessions.map((s) => (
-                  <button
-                    key={s.id}
-                    title={s.hostLabel || s.label}
-                    onClick={() => {
-                      void jumpToSession(s.id);
-                    }}
-                    className={cn(
-                      "w-full text-left px-2 py-1.5 rounded hover:bg-muted flex items-center justify-between",
-                      s.status === "connected" ? "" : "text-muted-foreground",
-                      activeTabId === s.id ? "bg-muted" : "",
-                    )}
-                  >
-                    <span className="flex items-center gap-2 min-w-0">
-                      <StatusDot
-                        status={s.status === "connected" ? "success" : s.status === "connecting" ? "warning" : "error"}
-                        spinning={s.status === "connecting"}
-                      />
-                      <span className="truncate">{s.hostLabel || s.label}</span>
-                    </span>
-                    <span className="ml-2 text-xs text-muted-foreground">{t(`tray.status.${s.status}`)}</span>
-                  </button>
+                  <Tooltip key={s.id}>
+                    <TooltipTrigger asChild>
+                      <button
+                        onClick={() => {
+                          void jumpToSession(s.id);
+                        }}
+                        className={cn(
+                          "w-full text-left px-2 py-1.5 rounded hover:bg-muted flex items-center justify-between",
+                          s.status === "connected" ? "" : "text-muted-foreground",
+                          activeTabId === s.id ? "bg-muted" : "",
+                        )}
+                      >
+                        <span className="flex items-center gap-2 min-w-0">
+                          <StatusDot
+                            status={s.status === "connected" ? "success" : s.status === "connecting" ? "warning" : "error"}
+                            spinning={s.status === "connecting"}
+                          />
+                          <span className="truncate">{s.hostLabel || s.label}</span>
+                        </span>
+                        <span className="ml-2 text-xs text-muted-foreground">{t(`tray.status.${s.status}`)}</span>
+                      </button>
+                    </TooltipTrigger>
+                    <TooltipContent>{s.hostLabel || s.label}</TooltipContent>
+                  </Tooltip>
                 ))}
               </div>
             </div>
@@ -307,16 +317,20 @@ const TrayPanelContent: React.FC<TrayPanelContentProps> = ({ terminalSettings })
         {activeSession && (
           <div>
             <div className="px-2 py-1 text-xs text-muted-foreground">Current</div>
-            <Button
-              variant="ghost"
-              className="w-full justify-start px-2 h-8"
-              title={activeSession.hostLabel || activeSession.label}
-              onClick={() => {
-                void jumpToSession(activeSession.id);
-              }}
-            >
-              <span className="truncate">{activeSession.hostLabel || activeSession.label}</span>
-            </Button>
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button
+                  variant="ghost"
+                  className="w-full justify-start px-2 h-8"
+                  onClick={() => {
+                    void jumpToSession(activeSession.id);
+                  }}
+                >
+                  <span className="truncate">{activeSession.hostLabel || activeSession.label}</span>
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent>{activeSession.hostLabel || activeSession.label}</TooltipContent>
+            </Tooltip>
           </div>
         )}
 
@@ -332,55 +346,58 @@ const TrayPanelContent: React.FC<TrayPanelContentProps> = ({ terminalSettings })
                   : `${rule.localPort} → ${rule.remoteHost}:${rule.remotePort}`);
 
                 return (
-                  <button
-                    key={rule.id}
-                    disabled={isConnecting}
-                    title={label}
-                    onClick={() => {
-                      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 {
-                        const resolveEffectiveHost = (host: Host) => {
-                          const withGroupDefaults = host.group
-                            ? applyGroupDefaults(host, resolveGroupDefaults(host.group, groupConfigs, { validProxyProfileIds: proxyProfileIdSet }), { validProxyProfileIds: proxyProfileIdSet })
-                            : applyGroupDefaults(host, {}, { validProxyProfileIds: proxyProfileIdSet });
-                          return materializeHostProxyProfile(withGroupDefaults, proxyProfiles);
-                        };
-                        const host = resolveEffectiveHost(rawHost);
-                        void startTunnel(rule, host, hosts.map(resolveEffectiveHost), keys, identities, (status, error) => {
-                          if (status === "error" && error) toast.error(error);
-                        }, rule.autoStart, terminalSettings);
-                      }
-                    }}
-                    className={cn(
-                      "w-full text-left px-2 py-1.5 rounded hover:bg-muted flex items-center justify-between",
-                      isConnecting ? "opacity-60" : "",
-                    )}
-                  >
-                    <span className="flex items-center gap-2 min-w-0">
-                      <StatusDot
-                        status={
-                          rule.status === "active"
-                            ? "success"
-                            : rule.status === "connecting"
-                              ? "warning"
-                              : rule.status === "error"
-                                ? "error"
-                                : "neutral"
-                        }
-                        spinning={rule.status === "connecting"}
-                      />
-                      <span className="truncate">{label}</span>
-                    </span>
-                    <span className="ml-2 text-xs text-muted-foreground">
-                      {t(`tray.status.${rule.status}`)}
-                    </span>
-                  </button>
+                  <Tooltip key={rule.id}>
+                    <TooltipTrigger asChild>
+                      <button
+                        disabled={isConnecting}
+                        onClick={() => {
+                          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 {
+                            const resolveEffectiveHost = (host: Host) => {
+                              const withGroupDefaults = host.group
+                                ? applyGroupDefaults(host, resolveGroupDefaults(host.group, groupConfigs, { validProxyProfileIds: proxyProfileIdSet }), { validProxyProfileIds: proxyProfileIdSet })
+                                : applyGroupDefaults(host, {}, { validProxyProfileIds: proxyProfileIdSet });
+                              return materializeHostProxyProfile(withGroupDefaults, proxyProfiles);
+                            };
+                            const host = resolveEffectiveHost(rawHost);
+                            void startTunnel(rule, host, hosts.map(resolveEffectiveHost), keys, identities, (status, error) => {
+                              if (status === "error" && error) toast.error(error);
+                            }, rule.autoStart, terminalSettings);
+                          }
+                        }}
+                        className={cn(
+                          "w-full text-left px-2 py-1.5 rounded hover:bg-muted flex items-center justify-between",
+                          isConnecting ? "opacity-60" : "",
+                        )}
+                      >
+                        <span className="flex items-center gap-2 min-w-0">
+                          <StatusDot
+                            status={
+                              rule.status === "active"
+                                ? "success"
+                                : rule.status === "connecting"
+                                  ? "warning"
+                                  : rule.status === "error"
+                                    ? "error"
+                                    : "neutral"
+                            }
+                            spinning={rule.status === "connecting"}
+                          />
+                          <span className="truncate">{label}</span>
+                        </span>
+                        <span className="ml-2 text-xs text-muted-foreground">
+                          {t(`tray.status.${rule.status}`)}
+                        </span>
+                      </button>
+                    </TooltipTrigger>
+                    <TooltipContent>{label}</TooltipContent>
+                  </Tooltip>
                 );
               })}
             </div>

components/VaultView.sortPersistence.test.tsx

@@ -0,0 +1,142 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import React from "react";
+import { renderToStaticMarkup } from "react-dom/server";
+
+import { I18nProvider } from "../application/i18n/I18nProvider.tsx";
+import { STORAGE_KEY_VAULT_HOSTS_SORT_MODE } from "../infrastructure/config/storageKeys.ts";
+import type { Host, SSHKey } from "../types.ts";
+import { VaultView } from "./VaultView.tsx";
+import { TooltipProvider } from "./ui/tooltip.tsx";
+
+const installStorageStub = (sortMode: string | null) => {
+  const values = new Map<string, string>();
+  if (sortMode !== null) {
+    values.set(STORAGE_KEY_VAULT_HOSTS_SORT_MODE, sortMode);
+  }
+
+  Object.defineProperty(globalThis, "localStorage", {
+    configurable: true,
+    value: {
+      getItem: (key: string) => values.get(key) ?? null,
+      setItem: (key: string, value: string) => {
+        values.set(key, value);
+      },
+      removeItem: (key: string) => {
+        values.delete(key);
+      },
+    },
+  });
+};
+
+const host = (id: string, label: string, createdAt: number, group = ""): Host => ({
+  id,
+  label,
+  hostname: `${id}.example.com`,
+  username: "root",
+  tags: [],
+  os: "linux",
+  port: 22,
+  protocol: "ssh",
+  authMethod: "password",
+  createdAt,
+  group,
+});
+
+const fallbackKey: SSHKey = {
+  id: "key-1",
+  label: "Fallback key",
+  type: "ED25519",
+  privateKey: "",
+  source: "generated",
+  category: "key",
+  created: 1,
+};
+
+const renderVault = (sortMode: string | null, hosts: Host[]) => {
+  installStorageStub(sortMode);
+  const noop = () => {};
+
+  return renderToStaticMarkup(
+    React.createElement(
+      I18nProvider,
+      { locale: "en" },
+      React.createElement(
+        TooltipProvider,
+        null,
+        React.createElement(VaultView, {
+          hosts,
+          keys: [],
+          identities: [],
+          proxyProfiles: [],
+          snippets: [],
+          snippetPackages: [],
+          customGroups: [],
+          knownHosts: [],
+          shellHistory: [],
+          connectionLogs: [],
+          managedSources: [],
+          sessionCount: 0,
+          hotkeyScheme: "mac",
+          keyBindings: [],
+          terminalThemeId: "default",
+          terminalFontSize: 14,
+          onOpenSettings: noop,
+          onOpenQuickSwitcher: noop,
+          onCreateLocalTerminal: noop,
+          onDeleteHost: noop,
+          onConnect: noop,
+          onUpdateHosts: noop,
+          onUpdateKeys: noop,
+          onImportOrReuseKey: () => fallbackKey,
+          onUpdateIdentities: noop,
+          onUpdateProxyProfiles: noop,
+          onUpdateSnippets: noop,
+          onUpdateSnippetPackages: noop,
+          onUpdateCustomGroups: noop,
+          onUpdateKnownHosts: noop,
+          onUpdateManagedSources: noop,
+          onConvertKnownHost: noop,
+          onToggleConnectionLogSaved: noop,
+          onDeleteConnectionLog: noop,
+          onClearUnsavedConnectionLogs: noop,
+          onOpenLogView: noop,
+          groupConfigs: [],
+          onUpdateGroupConfigs: noop,
+          showRecentHosts: false,
+          showOnlyUngroupedHostsInRoot: false,
+        }),
+      ),
+    ),
+  );
+};
+
+test("Hosts sort mode is restored from storage", () => {
+  const markup = renderVault("za", [
+    host("alpha", "Alpha Host", 1),
+    host("zulu", "Zulu Host", 2),
+  ]);
+
+  assert.ok(markup.indexOf("Zulu Host") < markup.indexOf("Alpha Host"));
+});
+
+test("Hosts grouped sort mode is restored from storage", () => {
+  const markup = renderVault("group", [
+    host("beta", "Beta Host", 1, "Beta Group"),
+    host("alpha", "Alpha Host", 2, "Alpha Group"),
+  ]);
+
+  assert.match(
+    markup,
+    /<span class="text-sm font-medium text-muted-foreground">Alpha Group<\/span><span class="text-xs text-muted-foreground\/60">\(1\)<\/span>/,
+  );
+});
+
+test("Hosts sort mode falls back safely when storage contains an invalid value", () => {
+  const markup = renderVault("unknown-sort", [
+    host("zulu", "Zulu Host", 2),
+    host("alpha", "Alpha Host", 1),
+  ]);
+
+  assert.ok(markup.indexOf("Alpha Host") < markup.indexOf("Zulu Host"));
+});

components/VaultView.tsx

@@ -35,6 +35,7 @@ import React, { Suspense, lazy, memo, startTransition, useCallback, useEffect, u
 import { useI18n } from "../application/i18n/I18nProvider";
 import { useStoredViewMode } from "../application/state/useStoredViewMode";
 import { useStoredBoolean } from "../application/state/useStoredBoolean";
+import { useStoredString } from "../application/state/useStoredString";
 import { useTreeExpandedState } from "../application/state/useTreeExpandedState";
 import { sanitizeCredentialValue } from "../domain/credentials";
 import { resolveGroupDefaults, applyGroupDefaults } from "../domain/groupConfig";
@@ -50,6 +51,7 @@ import { upsertKnownHost } from "../domain/knownHosts";
 import { importVaultHostsFromText, exportHostsToCsvWithStats } from "../domain/vaultImport";
 import type { VaultImportFormat } from "../domain/vaultImport";
 import {
+  STORAGE_KEY_VAULT_HOSTS_SORT_MODE,
   STORAGE_KEY_VAULT_HOSTS_TREE_EXPANDED,
   STORAGE_KEY_VAULT_HOSTS_VIEW_MODE,
   STORAGE_KEY_VAULT_SIDEBAR_COLLAPSED,
@@ -70,7 +72,6 @@ import {
   SSHKey,
   ShellHistoryEntry,
   Snippet,
-  TerminalSession,
 } from "../types";
 import { AppLogo } from "./AppLogo";
 import { DistroAvatar } from "./DistroAvatar";
@@ -122,6 +123,13 @@ type DropTarget =
   | { kind: "root" }
   | { kind: "group"; path: string };
 
+const isSortMode = (value: string): value is SortMode =>
+  value === "az" ||
+  value === "za" ||
+  value === "newest" ||
+  value === "oldest" ||
+  value === "group";
+
 // Props without isActive - it's now subscribed internally
 interface VaultViewProps {
   hosts: Host[];
@@ -135,7 +143,7 @@ interface VaultViewProps {
   shellHistory: ShellHistoryEntry[];
   connectionLogs: ConnectionLog[];
   managedSources: ManagedSource[];
-  sessions: TerminalSession[];
+  sessionCount: number;
   hotkeyScheme: HotkeyScheme;
   keyBindings: KeyBinding[];
   terminalThemeId: string;
@@ -187,7 +195,7 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
   shellHistory,
   connectionLogs,
   managedSources,
-  sessions,
+  sessionCount,
   hotkeyScheme,
   keyBindings,
   terminalThemeId,
@@ -281,7 +289,11 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
     "grid",
   );
   const treeExpandedState = useTreeExpandedState(STORAGE_KEY_VAULT_HOSTS_TREE_EXPANDED);
-  const [sortMode, setSortMode] = useState<SortMode>("az");
+  const [sortMode, setSortMode] = useStoredString<SortMode>(
+    STORAGE_KEY_VAULT_HOSTS_SORT_MODE,
+    "az",
+    isSortMode,
+  );
   const [selectedTags, setSelectedTags] = useState<string[]>([]);
   const [selectedHostIds, setSelectedHostIds] = useState<Set<string>>(new Set());
   const [isMultiSelectMode, setIsMultiSelectMode] = useState(false);
@@ -1907,21 +1919,25 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
                 onChange={setSortMode}
                 className="h-10 w-10"
               />
-              <Button
-                variant={isMultiSelectMode ? "secondary" : "ghost"}
-                size="icon"
-                className="h-10 w-10"
-                onClick={() => {
-                  if (isMultiSelectMode) {
-                    clearHostSelection();
-                  } else {
-                    setIsMultiSelectMode(true);
-                  }
-                }}
-                title={t("vault.hosts.multiSelect")}
-              >
-                <CheckSquare size={16} />
-              </Button>
+              <Tooltip>
+                <TooltipTrigger asChild>
+                  <Button
+                    variant={isMultiSelectMode ? "secondary" : "ghost"}
+                    size="icon"
+                    className="h-10 w-10"
+                    onClick={() => {
+                      if (isMultiSelectMode) {
+                        clearHostSelection();
+                      } else {
+                        setIsMultiSelectMode(true);
+                      }
+                    }}
+                  >
+                    <CheckSquare size={16} />
+                  </Button>
+                </TooltipTrigger>
+                <TooltipContent>{t("vault.hosts.multiSelect")}</TooltipContent>
+              </Tooltip>
             </div>
             {/* New Host split button — collapses with an animation when the
                 host details / new-host aside panel is open, since the button
@@ -2229,6 +2245,12 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
                                 <ContextMenuItem onClick={() => handleEditHost(host)}>
                                   <Edit2 className="mr-2 h-4 w-4" /> {t('action.edit')}
                                 </ContextMenuItem>
+                                <ContextMenuItem onClick={() => handleDuplicateHost(host)}>
+                                  <Copy className="mr-2 h-4 w-4" /> {t('action.duplicate')}
+                                </ContextMenuItem>
+                                <ContextMenuItem onClick={() => handleCopyCredentials(host)}>
+                                  <ClipboardCopy className="mr-2 h-4 w-4" /> {t('vault.hosts.copyCredentials')}
+                                </ContextMenuItem>
                                 <ContextMenuItem onClick={() => toggleHostPinned(host.id)}>
                                   <Pin className="mr-2 h-4 w-4" /> {t('vault.hosts.unpin')}
                                 </ContextMenuItem>
@@ -2328,6 +2350,12 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
                                 <ContextMenuItem onClick={() => handleEditHost(host)}>
                                   <Edit2 className="mr-2 h-4 w-4" /> {t('action.edit')}
                                 </ContextMenuItem>
+                                <ContextMenuItem onClick={() => handleDuplicateHost(host)}>
+                                  <Copy className="mr-2 h-4 w-4" /> {t('action.duplicate')}
+                                </ContextMenuItem>
+                                <ContextMenuItem onClick={() => handleCopyCredentials(host)}>
+                                  <ClipboardCopy className="mr-2 h-4 w-4" /> {t('vault.hosts.copyCredentials')}
+                                </ContextMenuItem>
                                 <ContextMenuItem onClick={() => toggleHostPinned(host.id)}>
                                   <Pin className="mr-2 h-4 w-4" /> {host.pinned ? t('vault.hosts.unpin') : t('vault.hosts.pinToTop')}
                                 </ContextMenuItem>
@@ -2495,7 +2523,7 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
                         {t("vault.hosts.header.entries", { count: viewMode === "tree" ? treeViewHosts.length : visibleDisplayedHosts.length })}
                       </span>
                       <div className="bg-secondary/80 border border-border/70 rounded-md px-2 py-1 text-[11px]">
-                        {t("vault.hosts.header.live", { count: sessions.length })}
+                        {t("vault.hosts.header.live", { count: sessionCount })}
                       </div>
                     </div>
                   </div>
@@ -2887,6 +2915,7 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
             hosts={hosts}
             proxyProfiles={proxyProfiles}
             customGroups={customGroups}
+            groupConfigs={groupConfigs}
             managedSources={managedSources}
             onSave={(k) => onUpdateKeys([...keys, k])}
             onUpdate={(k) =>
@@ -3275,7 +3304,7 @@ export const vaultViewAreEqual = (
     prev.knownHosts === next.knownHosts &&
     prev.shellHistory === next.shellHistory &&
     prev.connectionLogs === next.connectionLogs &&
-    prev.sessions === next.sessions &&
+    prev.sessionCount === next.sessionCount &&
     prev.managedSources === next.managedSources &&
     prev.groupConfigs === next.groupConfigs &&
     prev.terminalThemeId === next.terminalThemeId &&

components/ai-elements/message.tsx

@@ -4,6 +4,7 @@ import { code } from '@streamdown/code';
 import type { ComponentProps, HTMLAttributes } from 'react';
 import { memo } from 'react';
 import { Streamdown } from 'streamdown';
+import { createSafeCodeHighlighter } from './streamdownCodeHighlighter';
 
 export type MessageProps = HTMLAttributes<HTMLDivElement> & {
   from: 'user' | 'assistant' | 'system' | 'tool';
@@ -46,21 +47,8 @@ export const MessageContent = ({ children, className, from, ...props }: MessageC
   </div>
 );
 
-export type MessageActionsProps = ComponentProps<'div'>;
-
-export const MessageActions = ({ className, children, ...props }: MessageActionsProps) => (
-  <div
-    className={cn(
-      'flex items-center gap-1 opacity-0 group-hover:opacity-100 transition-opacity',
-      className,
-    )}
-    {...props}
-  >
-    {children}
-  </div>
-);
-
-const streamdownPlugins = { cjk, code };
+const safeCode = createSafeCodeHighlighter(code);
+const streamdownPlugins = { cjk, code: safeCode };
 
 export type MessageResponseProps = ComponentProps<typeof Streamdown>;
 

components/ai-elements/prompt-input.tsx

@@ -11,7 +11,6 @@ import type {
   FormEvent,
   HTMLAttributes,
   KeyboardEvent,
-  ReactNode,
 } from 'react';
 import { forwardRef, useCallback, useRef } from 'react';
 import { cn } from '../../lib/utils';
@@ -145,37 +144,6 @@ export const PromptInputTools = forwardRef<HTMLDivElement, PromptInputToolsProps
 );
 PromptInputTools.displayName = 'PromptInputTools';
 
-// ---------------------------------------------------------------------------
-// PromptInputButton (toolbar button with optional tooltip)
-// ---------------------------------------------------------------------------
-
-export interface PromptInputButtonProps extends ComponentProps<typeof InputGroupButton> {
-  tooltip?: ReactNode;
-  tooltipSide?: 'top' | 'bottom' | 'left' | 'right';
-}
-
-export const PromptInputButton = forwardRef<HTMLButtonElement, PromptInputButtonProps>(
-  ({ tooltip, tooltipSide = 'top', ...props }, ref) => {
-    const button = <InputGroupButton ref={ref} {...props} />;
-
-    if (!tooltip) return button;
-
-    return (
-      <TooltipProvider>
-        <Tooltip>
-          <TooltipTrigger asChild>{button}</TooltipTrigger>
-          <TooltipContent side={tooltipSide}>{tooltip}</TooltipContent>
-        </Tooltip>
-      </TooltipProvider>
-    );
-  },
-);
-PromptInputButton.displayName = 'PromptInputButton';
-
-// ---------------------------------------------------------------------------
-// PromptInputSubmit
-// ---------------------------------------------------------------------------
-
 export type PromptInputStatus = 'idle' | 'submitted' | 'streaming' | 'error';
 
 export interface PromptInputSubmitProps extends ComponentProps<typeof InputGroupButton> {
@@ -244,4 +212,3 @@ export const PromptInputSubmit = forwardRef<HTMLButtonElement, PromptInputSubmit
   },
 );
 PromptInputSubmit.displayName = 'PromptInputSubmit';
-

components/ai-elements/streamdownCodeHighlighter.ts

@@ -0,0 +1,76 @@
+import type {
+  CodeHighlighterPlugin,
+  HighlightOptions,
+  HighlightResult,
+} from 'streamdown';
+import type { BundledLanguage } from 'shiki';
+
+const PLAIN_TEXT_LANGUAGES = new Set([
+  '',
+  'plain',
+  'plaintext',
+  'text',
+  'txt',
+]);
+
+const LANGUAGE_ALIASES: Record<string, BundledLanguage> = {
+  cfg: 'ini',
+  conf: 'ini',
+  config: 'ini',
+};
+
+export const createPlainCodeHighlightResult = (source: string): HighlightResult => {
+  const code = source.replace(/\n+$/, '');
+  return {
+    bg: 'transparent',
+    fg: 'inherit',
+    tokens: code.split('\n').map((line) => [
+      {
+        content: line,
+        color: 'inherit',
+        bgColor: 'transparent',
+        htmlStyle: {},
+        offset: 0,
+      },
+    ]),
+  };
+};
+
+const normalizeLanguageKey = (language: string): string =>
+  language.trim().toLowerCase();
+
+export const resolveSupportedCodeLanguage = (
+  highlighter: CodeHighlighterPlugin,
+  language: string,
+): BundledLanguage | null => {
+  const key = normalizeLanguageKey(language);
+  if (PLAIN_TEXT_LANGUAGES.has(key)) return null;
+
+  const direct = key as BundledLanguage;
+  if (highlighter.supportsLanguage(direct)) return direct;
+
+  const alias = LANGUAGE_ALIASES[key];
+  if (alias && highlighter.supportsLanguage(alias)) return alias;
+
+  return null;
+};
+
+export const createSafeCodeHighlighter = (
+  highlighter: CodeHighlighterPlugin,
+): CodeHighlighterPlugin => ({
+  ...highlighter,
+  supportsLanguage(language) {
+    return resolveSupportedCodeLanguage(highlighter, language) !== null;
+  },
+  highlight(options: HighlightOptions, callback?: (result: HighlightResult) => void) {
+    const supportedLanguage = resolveSupportedCodeLanguage(highlighter, options.language);
+    if (!supportedLanguage) {
+      return createPlainCodeHighlightResult(options.code);
+    }
+
+    return highlighter.highlight(
+      { ...options, language: supportedLanguage },
+      callback,
+    );
+  },
+});

components/ai-elements/tool-call.tsx

@@ -4,6 +4,7 @@ import { cn } from '../../lib/utils';
 import { Check, ChevronDown, ChevronRight, CheckCircle2, Loader2, ShieldAlert, X, XCircle, Slash } from 'lucide-react';
 import { Button } from '../ui/button';
 import { Badge } from '../ui/badge';
+import { Tooltip, TooltipContent, TooltipTrigger } from '../ui/tooltip';
 import { useI18n } from '../../application/i18n/I18nProvider';
 
 /**
@@ -142,9 +143,14 @@ export const ToolCall = ({
           : <ChevronRight size={12} className="text-muted-foreground/40 shrink-0" />
         }
         {name === 'terminal_execute' && args?.command ? (
-          <span className="font-mono text-muted-foreground/70 truncate" title={String(args.command)}>
-            <span className="text-muted-foreground/40">$ </span>{String(args.command)}
-          </span>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <span className="font-mono text-muted-foreground/70 truncate cursor-default">
+                <span className="text-muted-foreground/40">$ </span>{String(args.command)}
+              </span>
+            </TooltipTrigger>
+            <TooltipContent>{String(args.command)}</TooltipContent>
+          </Tooltip>
         ) : (
           <span className="font-mono text-muted-foreground/70 truncate">{name}</span>
         )}

components/ai/AgentSelector.tsx

@@ -20,6 +20,7 @@ import {
   DropdownContent,
   DropdownTrigger,
 } from '../ui/dropdown';
+import { Tooltip, TooltipContent, TooltipTrigger } from '../ui/tooltip';
 
 interface AgentSelectorProps {
   currentAgentId: string;
@@ -80,6 +81,7 @@ const DiscoveredAgentRow: React.FC<{
   agent: DiscoveredAgent;
   onEnable: () => void;
 }> = ({ agent, onEnable }) => {
+  const { t } = useI18n();
   const agentLike: AgentInfo = {
     id: `discovered_${agent.command}`,
     name: agent.name,
@@ -98,13 +100,17 @@ const DiscoveredAgentRow: React.FC<{
           {agent.version || agent.path}
         </span>
       </div>
-      <button
-        onClick={onEnable}
-        className="shrink-0 rounded-md px-2 py-0.5 text-[11px] font-medium text-primary/80 hover:bg-primary/10 hover:text-primary transition-colors cursor-pointer"
-        title={`Enable ${agent.name}`}
-      >
-        <Plus size={12} />
-      </button>
+      <Tooltip>
+        <TooltipTrigger asChild>
+          <button
+            onClick={onEnable}
+            className="shrink-0 rounded-md px-2 py-0.5 text-[11px] font-medium text-primary/80 hover:bg-primary/10 hover:text-primary transition-colors cursor-pointer"
+          >
+            <Plus size={12} />
+          </button>
+        </TooltipTrigger>
+        <TooltipContent>{t('ai.chat.enableAgent', { name: agent.name })}</TooltipContent>
+      </Tooltip>
     </div>
   );
 };
@@ -250,14 +256,18 @@ const AgentSelector: React.FC<AgentSelectorProps> = ({
             <SectionLabel
               action={
                 onRediscover && (
-                  <button
-                    onClick={onRediscover}
-                    disabled={isDiscovering}
-                    className="text-[10px] text-muted-foreground/40 hover:text-muted-foreground/70 transition-colors cursor-pointer disabled:opacity-50"
-                    title={t('ai.chat.rescan')}
-                  >
-                    <RefreshCw size={10} className={cn(isDiscovering && 'animate-spin')} />
-                  </button>
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <button
+                        onClick={onRediscover}
+                        disabled={isDiscovering}
+                        className="text-[10px] text-muted-foreground/40 hover:text-muted-foreground/70 transition-colors cursor-pointer disabled:opacity-50"
+                      >
+                        <RefreshCw size={10} className={cn(isDiscovering && 'animate-spin')} />
+                      </button>
+                    </TooltipTrigger>
+                    <TooltipContent>{t('ai.chat.rescan')}</TooltipContent>
+                  </Tooltip>
                 )
               }
             >

components/ai/ChatInput.tsx

@@ -20,11 +20,37 @@ import {
 } from '../ai-elements/prompt-input';
 import type { PromptInputStatus } from '../ai-elements/prompt-input';
 import { formatThinkingLabel } from '../../infrastructure/ai/types';
-import type { AgentModelPreset, AIPermissionMode, UploadedFile } from '../../infrastructure/ai/types';
+import type { AgentModelPreset, AIPermissionMode, ProviderConfig, UploadedFile } from '../../infrastructure/ai/types';
+import { ProviderIconBadge } from '../settings/tabs/ai/ProviderIconBadge';
 import { ScrollArea } from '../ui/scroll-area';
+import { Tooltip, TooltipContent, TooltipTrigger } from '../ui/tooltip';
 
 // Keep in sync with the popover's Tailwind max-width below.
 const MODEL_PICKER_MAX_WIDTH = 360;
+// Slightly wider for the provider picker so the per-row default-model
+// caption doesn't truncate.
+const PROVIDER_PICKER_MAX_WIDTH = 320;
+
+/**
+ * Provider picker payload used by Catty Agent. When set, the model chip
+ * switches to a flat provider list (provider icon + name + the provider's
+ * configured default model as caption) in place of the generic Cpu glyph
+ * + model-preset dropdown. Each provider exposes a single model — its
+ * `defaultModel` — so a two-level menu would be empty noise; picking a
+ * provider implicitly picks its model.
+ */
+export interface ProviderSwitcherConfig {
+  /** Every configured provider — Settings-level visibility, not the
+   *  `enabled` toggle, since the user expects to swap between everything
+   *  they've set up. */
+  providers: ProviderConfig[];
+  /** Currently bound provider id (falls back to providers[0] when missing). */
+  selectedProviderId?: string;
+  /** Currently bound model id under the selected provider. */
+  selectedModelId?: string;
+  /** Fires when the user picks a (providerId, modelId) pair. */
+  onSelect: (providerId: string, modelId: string) => void;
+}
 
 interface ChatInputProps {
   value: string;
@@ -63,6 +89,13 @@ interface ChatInputProps {
   permissionMode?: AIPermissionMode;
   /** Callback when user changes permission mode */
   onPermissionModeChange?: (mode: AIPermissionMode) => void;
+  /**
+   * Provider→model two-level picker payload. When provided, replaces the
+   * single-list model dropdown with a provider-aware picker. Used for the
+   * Catty Agent only — external ACP agents (Claude/Codex) keep the
+   * `modelPresets` dropdown because their provider is wired inside the CLI.
+   */
+  providerSwitcher?: ProviderSwitcherConfig;
 }
 
 const ChatInput: React.FC<ChatInputProps> = ({
@@ -89,6 +122,7 @@ const ChatInput: React.FC<ChatInputProps> = ({
   onRemoveUserSkill,
   permissionMode,
   onPermissionModeChange,
+  providerSwitcher,
 }) => {
   const { t } = useI18n();
   const [expanded, setExpanded] = useState(false);
@@ -354,16 +388,37 @@ const ChatInput: React.FC<ChatInputProps> = ({
     return { selectedPreset: undefined, selectedThinking: undefined };
   })();
   const selectedBaseModelId = selectedPreset?.id;
-  const modelLabel = selectedPreset
-    ? selectedPreset.name + (selectedThinking ? ` / ${formatThinkingLabel(selectedThinking)}` : '')
-    : modelName || providerName || t('ai.chat.noModel');
-  const hasModelPicker = modelPresets.length > 0 && onModelSelect;
+  // Provider switcher mode (Catty Agent): two-column popover, chip carries
+  // the provider's icon + name + model name. Falls back to the existing
+  // single-list model dropdown for ACP agents.
+  const hasProviderSwitcher = !!providerSwitcher && providerSwitcher.providers.length > 0;
+  // Resolve to the actually-bound provider only — no `?? providers[0]`
+  // fallback, since a provider that isn't really bound will still hit the
+  // `!sendActiveProvider` guard at send time. Faking a selection in the
+  // chip would lie about a state the rest of the system treats as empty.
+  const selectedSwitcherProvider = hasProviderSwitcher
+    ? providerSwitcher!.providers.find((p) => p.id === providerSwitcher!.selectedProviderId)
+    : undefined;
+  const providerSwitcherChipLabel = hasProviderSwitcher
+    ? (selectedSwitcherProvider
+        ? (providerSwitcher!.selectedModelId
+            ? `${selectedSwitcherProvider.name} · ${providerSwitcher!.selectedModelId}`
+            : selectedSwitcherProvider.name)
+        : t('ai.chat.selectProvider'))
+    : '';
+  const modelLabel = hasProviderSwitcher
+    ? providerSwitcherChipLabel
+    : (selectedPreset
+        ? selectedPreset.name + (selectedThinking ? ` / ${formatThinkingLabel(selectedThinking)}` : '')
+        : modelName || providerName || t('ai.chat.noModel'));
+  const hasModelPicker = hasProviderSwitcher || (modelPresets.length > 0 && !!onModelSelect);
+  const popoverMaxWidth = hasProviderSwitcher ? PROVIDER_PICKER_MAX_WIDTH : MODEL_PICKER_MAX_WIDTH;
   const chipClassName =
     'inline-flex h-6 items-center gap-1 rounded-full px-1.5 text-[10.5px] text-foreground/72';
   const selectedSkillChipClassName =
     'inline-flex h-7 items-center gap-1.5 rounded-full border border-primary/18 bg-primary/8 pl-2.5 pr-1.5 text-[11px] font-medium text-foreground/86 shadow-[inset_0_1px_0_rgba(255,255,255,0.06)]';
   const iconButtonClassName =
-    'h-6 w-6 rounded-full bg-transparent text-foreground/62 hover:bg-muted/24 hover:text-foreground';
+    'h-6 w-6 shrink-0 rounded-full bg-transparent text-foreground/62 hover:bg-muted/24 hover:text-foreground';
 
   return (
     <div className="shrink-0 px-4 pb-4">
@@ -415,24 +470,27 @@ const ChatInput: React.FC<ChatInputProps> = ({
             <div className="px-3 pt-3 pb-1.5">
               <div className="flex flex-wrap gap-2">
                 {selectedUserSkills.map((skill) => (
-                  <div
-                    key={skill.id}
-                    className={selectedSkillChipClassName}
-                    title={skill.description || skill.name || skill.slug}
-                  >
-                    <Package size={11} className="text-primary/72 shrink-0" />
-                    <span className="truncate max-w-[180px]">
-                      {skill.name && skill.name !== skill.slug ? skill.name : `/${skill.slug}`}
-                    </span>
-                    <button
-                      type="button"
-                      onClick={() => onRemoveUserSkill?.(skill.slug)}
-                      className="inline-flex h-4.5 w-4.5 items-center justify-center rounded-full text-foreground/42 hover:bg-primary/10 hover:text-foreground/72 transition-colors cursor-pointer"
-                      aria-label={`Remove skill ${skill.name || skill.slug}`}
-                    >
-                      <X size={9} />
-                    </button>
-                  </div>
+                  <Tooltip key={skill.id}>
+                    <TooltipTrigger asChild>
+                      <div
+                        className={selectedSkillChipClassName}
+                      >
+                        <Package size={11} className="text-primary/72 shrink-0" />
+                        <span className="truncate max-w-[180px]">
+                          {skill.name && skill.name !== skill.slug ? skill.name : `/${skill.slug}`}
+                        </span>
+                        <button
+                          type="button"
+                          onClick={() => onRemoveUserSkill?.(skill.slug)}
+                          className="inline-flex h-4.5 w-4.5 items-center justify-center rounded-full text-foreground/42 hover:bg-primary/10 hover:text-foreground/72 transition-colors cursor-pointer"
+                          aria-label={`Remove skill ${skill.name || skill.slug}`}
+                        >
+                          <X size={9} />
+                        </button>
+                      </div>
+                    </TooltipTrigger>
+                    <TooltipContent>{skill.description || skill.name || skill.slug}</TooltipContent>
+                  </Tooltip>
                 ))}
               </div>
             </div>
@@ -450,14 +508,18 @@ const ChatInput: React.FC<ChatInputProps> = ({
             ].filter(Boolean).join(' ')}
             maxLength={100000}
           />
-          <button
-            type="button"
-            onClick={() => setExpanded((e) => !e)}
-            className="absolute top-3.5 right-3 rounded-md p-1 text-muted-foreground/38 hover:text-muted-foreground/72 hover:bg-muted/25 transition-colors cursor-pointer"
-            title={expanded ? 'Collapse' : 'Expand'}
-          >
-            <Expand size={12} />
-          </button>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <button
+                type="button"
+                onClick={() => setExpanded((e) => !e)}
+                className="absolute top-3.5 right-3 rounded-md p-1 text-muted-foreground/38 hover:text-muted-foreground/72 hover:bg-muted/25 transition-colors cursor-pointer"
+              >
+                <Expand size={12} />
+              </button>
+            </TooltipTrigger>
+            <TooltipContent>{expanded ? t('ai.chat.collapse') : t('ai.chat.expand')}</TooltipContent>
+          </Tooltip>
         </div>
 
         {/* @ mention popover */}
@@ -556,26 +618,30 @@ const ChatInput: React.FC<ChatInputProps> = ({
 
         {/* Footer toolbar */}
         <PromptInputFooter className="gap-1.5 border-t-0 bg-transparent px-3 pb-2 pt-0">
-          <PromptInputTools className="gap-1 flex-wrap">
-            <button
-              ref={attachBtnRef}
-              type="button"
-              onClick={() => {
-                if (!showAttachMenu) {
-                  const rect = attachBtnRef.current?.getBoundingClientRect();
-                  if (rect) setMenuPos({ left: rect.left, bottom: window.innerHeight - rect.top + 6 });
-                  setActiveMenu('attach');
-                } else {
-                  closeAllMenus();
-                }
-              }}
-              className={iconButtonClassName}
-              title="Attach"
-              aria-label="Attach file"
-              aria-expanded={showAttachMenu}
-            >
-              <Plus size={13} />
-            </button>
+          <PromptInputTools className="gap-1 min-w-0">
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <button
+                  ref={attachBtnRef}
+                  type="button"
+                  onClick={() => {
+                    if (!showAttachMenu) {
+                      const rect = attachBtnRef.current?.getBoundingClientRect();
+                      if (rect) setMenuPos({ left: rect.left, bottom: window.innerHeight - rect.top + 6 });
+                      setActiveMenu('attach');
+                    } else {
+                      closeAllMenus();
+                    }
+                  }}
+                  className={iconButtonClassName}
+                  aria-label={t('ai.chat.attach')}
+                  aria-expanded={showAttachMenu}
+                >
+                  <Plus size={13} />
+                </button>
+              </TooltipTrigger>
+              <TooltipContent>{t('ai.chat.attach')}</TooltipContent>
+            </Tooltip>
             {showAttachMenu && menuPos && createPortal(
               <>
                 <div className="fixed inset-0 z-[999]" onClick={closeAllMenus} />
@@ -643,7 +709,7 @@ const ChatInput: React.FC<ChatInputProps> = ({
                     // Clamp so the popover stays inside the viewport when
                     // the chip is near the right edge of a narrow AI side
                     // panel.
-                    const left = Math.max(8, Math.min(rect.left, window.innerWidth - MODEL_PICKER_MAX_WIDTH - 8));
+                    const left = Math.max(8, Math.min(rect.left, window.innerWidth - popoverMaxWidth - 8));
                     setMenuPos({ left, bottom: window.innerHeight - rect.top + 6 });
                   }
                   setActiveMenu('model');
@@ -651,12 +717,16 @@ const ChatInput: React.FC<ChatInputProps> = ({
                   closeAllMenus();
                 }
               }}
-              className={`${chipClassName} ${hasModelPicker ? 'cursor-pointer hover:bg-muted/24 transition-colors' : ''}`}
-              aria-label="Select model"
+              className={`${chipClassName} min-w-0 ${hasModelPicker ? 'cursor-pointer hover:bg-muted/24 transition-colors' : ''}`}
+              aria-label={hasProviderSwitcher ? 'Select provider and model' : 'Select model'}
               aria-expanded={showModelPicker}
             >
-              <Cpu size={11} className="text-muted-foreground/64" />
-              <span className="truncate max-w-[82px]">{modelLabel}</span>
+              {hasProviderSwitcher && selectedSwitcherProvider ? (
+                <ProviderIconBadge provider={selectedSwitcherProvider} size="xs" />
+              ) : (
+                <Cpu size={11} className="text-muted-foreground/64" />
+              )}
+              <span className={`truncate min-w-0 ${hasProviderSwitcher ? 'max-w-[180px]' : 'max-w-[82px]'}`}>{modelLabel}</span>
               {hasModelPicker && <ChevronDown size={9} className="text-muted-foreground/50" />}
             </button>
             {showModelPicker && hasModelPicker && menuPos && createPortal(
@@ -665,12 +735,58 @@ const ChatInput: React.FC<ChatInputProps> = ({
             <div className="fixed inset-0 z-[999] cursor-default" onClick={closeAllMenus} />
             <div
               role="listbox"
-                  aria-label="Select model"
+                  aria-label={hasProviderSwitcher ? 'Select provider and model' : 'Select model'}
                   className="fixed z-[1000] w-max min-w-[160px] rounded-lg border border-border/50 bg-popover shadow-lg py-1"
-                  style={{ left: menuPos.left, bottom: menuPos.bottom, maxWidth: MODEL_PICKER_MAX_WIDTH }}
+                  style={{ left: menuPos.left, bottom: menuPos.bottom, maxWidth: popoverMaxWidth }}
                   onMouseLeave={() => setHoveredModelId(null)}
                 >
-                  {modelPresets.map(preset => {
+                  {hasProviderSwitcher ? (
+                    <div className="min-w-[260px] max-h-[320px] overflow-y-auto">
+                      {providerSwitcher!.providers.map((p) => {
+                        const isSelected = providerSwitcher!.selectedProviderId === p.id;
+                        const defaultModel = p.defaultModel?.trim() ?? '';
+                        const hasModel = defaultModel.length > 0;
+                        // Rows without a defaultModel are inert — picking
+                        // one would save a binding with an empty model id
+                        // and produce a confusing model error at send time.
+                        // User has to set a defaultModel in Settings first.
+                        const disabled = !hasModel;
+                        const modelCaption = hasModel
+                          ? defaultModel
+                          : t('ai.chat.noProviderModel');
+                        return (
+                          <button
+                            key={p.id}
+                            type="button"
+                            role="option"
+                            aria-selected={isSelected}
+                            aria-disabled={disabled}
+                            disabled={disabled}
+                            title={disabled ? t('ai.chat.noProviderModel') : undefined}
+                            onClick={() => {
+                              if (disabled) return;
+                              providerSwitcher!.onSelect(p.id, defaultModel);
+                              closeAllMenus();
+                            }}
+                            className={`w-full flex items-center gap-2.5 px-2.5 py-2 text-left transition-colors ${
+                              disabled
+                                ? 'opacity-55 cursor-not-allowed'
+                                : 'hover:bg-muted/30 cursor-pointer'
+                            }`}
+                          >
+                            <ProviderIconBadge provider={p} size="md" />
+                            <div className="flex-1 min-w-0">
+                              <div className="truncate text-[12px] text-foreground/85">{p.name}</div>
+                              <div className={`truncate text-[10.5px] ${hasModel ? 'text-muted-foreground/70 font-mono' : 'text-muted-foreground/55 italic'}`}>
+                                {modelCaption}
+                              </div>
+                            </div>
+                            {isSelected && <Check size={12} className="text-primary shrink-0" />}
+                          </button>
+                        );
+                      })}
+                    </div>
+                  ) : modelPresets.map(preset => {
                     const isSelected = preset.id === selectedBaseModelId;
                     const hasThinking = preset.thinkingLevels && preset.thinkingLevels.length > 0;
                     return (
@@ -743,33 +859,37 @@ const ChatInput: React.FC<ChatInputProps> = ({
             {/* Permission mode chip — only for Catty Agent */}
             {permissionMode && onPermissionModeChange && (
               <>
-                <button
-                  ref={permBtnRef}
-                  type="button"
-                  onClick={() => {
-                    if (!showPermPicker) {
-                      const rect = permBtnRef.current?.getBoundingClientRect();
-                      if (rect) setMenuPos({ left: rect.left, bottom: window.innerHeight - rect.top + 6 });
-                      setActiveMenu('perm');
-                    } else {
-                      closeAllMenus();
-                    }
-                  }}
-                  className={`${chipClassName} cursor-pointer hover:bg-muted/24 transition-colors`}
-                  title={t('ai.safety.permissionMode')}
-                  aria-label="Permission mode"
-                  aria-expanded={showPermPicker}
-                >
-                  {permissionMode === 'observer' && <Eye size={11} className="text-blue-400/70" />}
-                  {permissionMode === 'confirm' && <ShieldCheck size={11} className="text-yellow-400/70" />}
-                  {permissionMode === 'autonomous' && <Zap size={11} className="text-green-400/70" />}
-                  <span className="truncate max-w-[72px]">
-                    {permissionMode === 'observer' && t('ai.chat.permObserver')}
-                    {permissionMode === 'confirm' && t('ai.chat.permConfirm')}
-                    {permissionMode === 'autonomous' && t('ai.chat.permAuto')}
-                  </span>
-                  <ChevronDown size={9} className="text-muted-foreground/50" />
-                </button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <button
+                      ref={permBtnRef}
+                      type="button"
+                      onClick={() => {
+                        if (!showPermPicker) {
+                          const rect = permBtnRef.current?.getBoundingClientRect();
+                          if (rect) setMenuPos({ left: rect.left, bottom: window.innerHeight - rect.top + 6 });
+                          setActiveMenu('perm');
+                        } else {
+                          closeAllMenus();
+                        }
+                      }}
+                      className={`${chipClassName} shrink-0 cursor-pointer hover:bg-muted/24 transition-colors`}
+                      aria-label={t('ai.safety.permissionMode')}
+                      aria-expanded={showPermPicker}
+                    >
+                      {permissionMode === 'observer' && <Eye size={11} className="text-blue-400/70" />}
+                      {permissionMode === 'confirm' && <ShieldCheck size={11} className="text-yellow-400/70" />}
+                      {permissionMode === 'autonomous' && <Zap size={11} className="text-green-400/70" />}
+                      <span className="truncate max-w-[72px]">
+                        {permissionMode === 'observer' && t('ai.chat.permObserver')}
+                        {permissionMode === 'confirm' && t('ai.chat.permConfirm')}
+                        {permissionMode === 'autonomous' && t('ai.chat.permAuto')}
+                      </span>
+                      <ChevronDown size={9} className="text-muted-foreground/50" />
+                    </button>
+                  </TooltipTrigger>
+                  <TooltipContent>{t('ai.safety.permissionMode')}</TooltipContent>
+                </Tooltip>
                 {showPermPicker && menuPos && createPortal(
                   <>
                     <div className="fixed inset-0 z-[999]" onClick={closeAllMenus} />

components/ai/ConversationExport.tsx

@@ -15,6 +15,7 @@ import {
   DropdownContent,
   DropdownTrigger,
 } from '../ui/dropdown';
+import { Tooltip, TooltipContent, TooltipTrigger } from '../ui/tooltip';
 
 interface ConversationExportProps {
   session: AISession | null;
@@ -45,17 +46,21 @@ const ConversationExport: React.FC<ConversationExportProps> = ({
 
   return (
     <Dropdown>
-      <DropdownTrigger asChild>
-        <Button
-          variant="ghost"
-          size="icon"
-          className={className ?? 'h-7 w-7 rounded-md text-muted-foreground/70 hover:bg-accent/60 hover:text-foreground'}
-          disabled={!hasMessages}
-          title={t('ai.chat.exportConversation')}
-        >
-          <Download size={14} />
-        </Button>
-      </DropdownTrigger>
+      <Tooltip>
+        <TooltipTrigger asChild>
+          <DropdownTrigger asChild>
+            <Button
+              variant="ghost"
+              size="icon"
+              className={className ?? 'h-7 w-7 rounded-md text-muted-foreground/70 hover:bg-accent/60 hover:text-foreground'}
+              disabled={!hasMessages}
+            >
+              <Download size={14} />
+            </Button>
+          </DropdownTrigger>
+        </TooltipTrigger>
+        <TooltipContent>{t('ai.chat.exportConversation')}</TooltipContent>
+      </Tooltip>
       <DropdownContent
         align="end"
         sideOffset={6}

components/ai/claudeConfigEnv.test.ts

@@ -0,0 +1,61 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+import {
+  splitClaudeEnv,
+  buildClaudeEnv,
+  parseEnvLines,
+  serializeEnvLines,
+} from "../settings/tabs/ai/claudeConfigEnv";
+
+test("splitClaudeEnv pulls out config dir and hides CLAUDE_CODE_EXECUTABLE", () => {
+  const result = splitClaudeEnv({
+    CLAUDE_CONFIG_DIR: "/cfg",
+    CLAUDE_CODE_EXECUTABLE: "/usr/bin/claude",
+    ANTHROPIC_API_KEY: "sk-x",
+  });
+  assert.equal(result.configDir, "/cfg");
+  assert.equal(result.envText, "ANTHROPIC_API_KEY=sk-x");
+});
+
+test("splitClaudeEnv handles undefined env", () => {
+  assert.deepEqual(splitClaudeEnv(undefined), { configDir: "", envText: "" });
+});
+
+test("parseEnvLines parses KEY=VALUE, trims keys, keeps value as-is, skips blanks/comments", () => {
+  assert.deepEqual(
+    parseEnvLines("ANTHROPIC_API_KEY = sk-x\n# comment\n\nANTHROPIC_BASE_URL=https://h/?a=b"),
+    { ANTHROPIC_API_KEY: "sk-x", ANTHROPIC_BASE_URL: "https://h/?a=b" },
+  );
+});
+
+test("serializeEnvLines is the inverse for simple entries", () => {
+  assert.equal(serializeEnvLines({ A: "1", B: "2" }), "A=1\nB=2");
+});
+
+test("buildClaudeEnv merges config dir + parsed env, preserves CLAUDE_CODE_EXECUTABLE, drops empties", () => {
+  const prev = { CLAUDE_CODE_EXECUTABLE: "/usr/bin/claude", OLD: "x" };
+  const next = buildClaudeEnv(prev, "/cfg", "ANTHROPIC_API_KEY=sk-x");
+  assert.deepEqual(next, {
+    CLAUDE_CODE_EXECUTABLE: "/usr/bin/claude",
+    CLAUDE_CONFIG_DIR: "/cfg",
+    ANTHROPIC_API_KEY: "sk-x",
+  });
+});
+
+test("buildClaudeEnv omits config dir when blank and returns undefined when empty", () => {
+  assert.equal(buildClaudeEnv(undefined, "  ", ""), undefined);
+});
+
+test("buildClaudeEnv ignores managed keys typed into the env editor", () => {
+  const next = buildClaudeEnv(
+    { CLAUDE_CODE_EXECUTABLE: "/usr/bin/claude" },
+    "/cfg",
+    "CLAUDE_CODE_EXECUTABLE=/evil/claude\nCLAUDE_CONFIG_DIR=/evil/dir\nANTHROPIC_API_KEY=sk-x",
+  );
+  assert.deepEqual(next, {
+    CLAUDE_CODE_EXECUTABLE: "/usr/bin/claude",
+    CLAUDE_CONFIG_DIR: "/cfg",
+    ANTHROPIC_API_KEY: "sk-x",
+  });
+});

components/ai/hooks/useAIChatStreaming.ts

@@ -31,6 +31,7 @@ import type { NetcattyBridge, ExecutorContext } from '../../../infrastructure/ai
 import { runExternalAgentTurn } from '../../../infrastructure/ai/externalAgentAdapter';
 import { runAcpAgentTurn } from '../../../infrastructure/ai/acpAgentAdapter';
 import { classifyError } from '../../../infrastructure/ai/errorClassifier';
+import { isSdkStreamStateError } from '../../../infrastructure/ai/shared/streamStateErrors';
 import {
   extractProviderContinuationFromRawChunk,
   getOpenAIChatAssistantFieldsForHistoryMessage,
@@ -143,6 +144,7 @@ export interface PanelBridge extends NetcattyBridge {
     cwd?: string,
     providerId?: string,
     chatSessionId?: string,
+    agentEnv?: Record<string, string>,
   ) => Promise<{ ok: boolean; models?: Array<{ id: string; name: string; description?: string; thinkingLevels?: string[] }>; currentModelId?: string | null; error?: string }>;
   aiAcpCleanup?: (chatSessionId: string) => Promise<{ ok: boolean }>;
   aiUserSkillsGetStatus?: () => Promise<{
@@ -646,9 +648,26 @@ export function useAIChatStreaming({
         // inside the tool's execute function via the approvalGate module.
         // The SDK may still emit this chunk type but we simply ignore it.
         case 'error': {
+          const typedChunk = chunk as ErrorChunk;
+          // Internal SDK reasoning/text state-machine errors (e.g. a
+          // third-party Anthropic-compat backend like DeepSeek's
+          // `-v4-flash` streaming thinking deltas without first emitting
+          // the `reasoning-start` content-block signal) leak through
+          // fullStream once per orphan delta. They're not user-facing
+          // errors — and worse, surfacing one assistant message per
+          // event breaks tool_use/tool_result contiguity on the next
+          // turn, which the Anthropic backend then rejects as
+          // `messages.N: tool_use ids were found without tool_result
+          // blocks immediately after`. Filter them out at the chunk
+          // boundary: drop the placeholder assistant message and keep
+          // accepting subsequent chunks, so the rest of the stream
+          // (real text, tool calls, the genuine `finish`) lands intact.
+          if (isSdkStreamStateError(typedChunk.error)) {
+            console.warn('[Catty] suppressed SDK stream state error:', typedChunk.error);
+            break;
+          }
           cancelPendingFlush();
           flushText();
-          const typedChunk = chunk as ErrorChunk;
           updateMessageById(streamSessionId, activeMsgId, msg => ({
             ...msg,
             statusText: '',

components/ai/managedAgentState.test.ts

@@ -68,6 +68,21 @@ test('buildManagedAgentState keeps unrelated defaults when removing stale manage
   assert.equal(state.defaultAgentId, 'custom-agent');
 });
 
+test('buildManagedAgentState stores the system Claude executable for ACP runs', () => {
+  const state = buildManagedAgentState(
+    [],
+    'catty',
+    'claude',
+    { path: '/opt/homebrew/bin/claude', version: '2.1.145 (Claude Code)', available: true },
+  );
+
+  assert.equal(state.agents.length, 1);
+  assert.equal(state.agents[0].command, '/opt/homebrew/bin/claude');
+  assert.deepEqual(state.agents[0].env, {
+    CLAUDE_CODE_EXECUTABLE: '/opt/homebrew/bin/claude',
+  });
+});
+
 test('buildManagedAgentState does not remove user-created matching agents', () => {
   const agents: ExternalAgentConfig[] = [
     {

components/ai/streamdownCodeHighlighter.test.ts

@@ -0,0 +1,90 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import type {
+  CodeHighlighterPlugin,
+  HighlightOptions,
+  HighlightResult,
+} from 'streamdown';
+import {
+  createPlainCodeHighlightResult,
+  createSafeCodeHighlighter,
+  resolveSupportedCodeLanguage,
+} from '../ai-elements/streamdownCodeHighlighter';
+
+const createFakeHighlighter = (
+  supportedLanguages: string[],
+  highlightImpl?: CodeHighlighterPlugin['highlight'],
+): CodeHighlighterPlugin => ({
+  name: 'shiki',
+  type: 'code-highlighter',
+  getSupportedLanguages: () => supportedLanguages as ReturnType<CodeHighlighterPlugin['getSupportedLanguages']>,
+  getThemes: () => ['github-light', 'github-dark'],
+  supportsLanguage: (language) => supportedLanguages.includes(language),
+  highlight: highlightImpl ?? ((options: HighlightOptions): HighlightResult => ({
+    tokens: [[{ content: options.language, offset: 0 }]],
+  })),
+});
+
+test('maps generic conf fences to ini for Streamdown highlighting', () => {
+  const highlighter = createFakeHighlighter(['ini']);
+
+  assert.equal(resolveSupportedCodeLanguage(highlighter, 'conf'), 'ini');
+  assert.equal(resolveSupportedCodeLanguage(highlighter, ' config '), 'ini');
+});
+
+test('falls back to plain tokens for unsupported languages', () => {
+  const highlighter = createSafeCodeHighlighter(
+    createFakeHighlighter([], () => {
+      throw new Error('delegate should not be called for unsupported languages');
+    }),
+  );
+
+  const result = highlighter.highlight({
+    code: '*.* action(type="omfwd"\n           Target="10.185.3.1")\n',
+    language: 'conf',
+    themes: ['github-light', 'github-dark'],
+  });
+
+  assert.deepEqual(
+    result?.tokens.map((line) => line.map((token) => token.content).join('')),
+    ['*.* action(type="omfwd"', '           Target="10.185.3.1")'],
+  );
+});
+
+test('uses supported aliases when highlighting generic config blocks', () => {
+  let receivedLanguage: string | null = null;
+  const highlighter = createSafeCodeHighlighter(
+    createFakeHighlighter(['ini'], (options: HighlightOptions): HighlightResult => {
+      receivedLanguage = options.language;
+      return createPlainCodeHighlightResult(options.code);
+    }),
+  );
+
+  const result = highlighter.highlight({
+    code: '*.* action(type="omfwd")',
+    language: 'conf',
+    themes: ['github-light', 'github-dark'],
+  });
+
+  assert.equal(receivedLanguage, 'ini');
+  assert.equal(result?.tokens[0][0].content, '*.* action(type="omfwd")');
+});
+
+test('treats text fences as plain code without calling the delegate', () => {
+  const highlighter = createSafeCodeHighlighter(
+    createFakeHighlighter(['ini'], () => {
+      throw new Error('delegate should not be called for text fences');
+    }),
+  );
+
+  const result = highlighter.highlight({
+    code: 'hello\nworld',
+    language: 'text',
+    themes: ['github-light', 'github-dark'],
+  });
+
+  assert.deepEqual(
+    result?.tokens.map((line) => line[0].content),
+    ['hello', 'world'],
+  );
+});

components/editor/TextEditorPane.test.tsx

@@ -8,6 +8,10 @@ import {
   isTextEditorReadOnly,
   TextEditorPromoteButton,
 } from "./TextEditorPane.tsx";
+import { TooltipProvider } from "../ui/tooltip.tsx";
+
+const wrap = (child: React.ReactElement) =>
+  React.createElement(TooltipProvider, null, child);
 
 test("disables promoting a modal editor to a tab while a save is running", () => {
   assert.equal(canPromoteTextEditor({ saving: true }), false);
@@ -18,18 +22,22 @@ test("disables promoting a modal editor to a tab while a save is running", () =>
 
 test("renders the promote button disabled while a save is running", () => {
   const savingMarkup = renderToStaticMarkup(
-    React.createElement(TextEditorPromoteButton, {
-      saving: true,
-      onPromoteToTab: () => {},
-      title: "Maximize",
-    }),
+    wrap(
+      React.createElement(TextEditorPromoteButton, {
+        saving: true,
+        onPromoteToTab: () => {},
+        title: "Maximize",
+      }),
+    ),
   );
   const idleMarkup = renderToStaticMarkup(
-    React.createElement(TextEditorPromoteButton, {
-      saving: false,
-      onPromoteToTab: () => {},
-      title: "Maximize",
-    }),
+    wrap(
+      React.createElement(TextEditorPromoteButton, {
+        saving: false,
+        onPromoteToTab: () => {},
+        title: "Maximize",
+      }),
+    ),
   );
 
   assert.match(savingMarkup, /disabled=""/);

components/editor/TextEditorPane.tsx

@@ -28,6 +28,7 @@ import { HotkeyScheme, KeyBinding, matchesKeyBinding } from '../../domain/models
 import { getLanguageName, getSupportedLanguages } from '../../lib/sftpFileUtils';
 import { Button } from '../ui/button';
 import { Combobox } from '../ui/combobox';
+import { Tooltip, TooltipContent, TooltipTrigger } from '../ui/tooltip';
 
 // Map our language IDs to Monaco language IDs
 const languageIdToMonaco = (langId: string): string => {
@@ -186,16 +187,20 @@ export const TextEditorPromoteButton: React.FC<{
   onPromoteToTab: () => void;
   title: string;
 }> = ({ saving, onPromoteToTab, title }) => (
-  <Button
-    variant="ghost"
-    size="icon"
-    className="h-7 w-7"
-    onClick={onPromoteToTab}
-    disabled={!canPromoteTextEditor({ saving })}
-    title={title}
-  >
-    <Maximize2 size={14} />
-  </Button>
+  <Tooltip>
+    <TooltipTrigger asChild>
+      <Button
+        variant="ghost"
+        size="icon"
+        className="h-7 w-7"
+        onClick={onPromoteToTab}
+        disabled={!canPromoteTextEditor({ saving })}
+      >
+        <Maximize2 size={14} />
+      </Button>
+    </TooltipTrigger>
+    <TooltipContent>{title}</TooltipContent>
+  </Tooltip>
 );
 
 export const TextEditorPane: React.FC<TextEditorPaneProps> = ({
@@ -479,34 +484,47 @@ export const TextEditorPane: React.FC<TextEditorPaneProps> = ({
               {fileName}
             </span>
             {subtitle && (
-              <span className="text-xs text-muted-foreground truncate" title={subtitle}>
-                {subtitle}
-              </span>
+              <Tooltip>
+                <TooltipTrigger asChild>
+                  <span className="text-xs text-muted-foreground truncate cursor-default">
+                    {subtitle}
+                  </span>
+                </TooltipTrigger>
+                <TooltipContent>{subtitle}</TooltipContent>
+              </Tooltip>
             )}
             {saveError && <span className="text-xs text-destructive truncate">{saveError}</span>}
           </div>
           <div className="flex items-center gap-2 min-w-0">
             {/* Search button */}
-            <Button
-              variant="ghost"
-              size="icon"
-              className="h-7 w-7"
-              onClick={handleSearch}
-              title={t('common.search')}
-            >
-              <Search size={14} />
-            </Button>
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button
+                  variant="ghost"
+                  size="icon"
+                  className="h-7 w-7"
+                  onClick={handleSearch}
+                >
+                  <Search size={14} />
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent>{t('common.search')}</TooltipContent>
+            </Tooltip>
 
             {/* Word wrap toggle */}
-            <Button
-              variant={wordWrap ? 'secondary' : 'ghost'}
-              size="icon"
-              className="h-7 w-7"
-              onClick={onToggleWordWrap}
-              title={t('sftp.editor.wordWrap')}
-            >
-              <WrapText size={14} />
-            </Button>
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button
+                  variant={wordWrap ? 'secondary' : 'ghost'}
+                  size="icon"
+                  className="h-7 w-7"
+                  onClick={onToggleWordWrap}
+                >
+                  <WrapText size={14} />
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent>{t('sftp.editor.wordWrap')}</TooltipContent>
+            </Tooltip>
 
             {/* Language selector */}
             <Combobox

components/host-details/AlgorithmOverridesPanel.tsx

@@ -0,0 +1,273 @@
+import React, { useCallback, useMemo } from "react";
+import { useI18n } from "../../application/i18n/I18nProvider";
+import {
+  effectiveDefaultAlgorithms,
+  SSH_ALGORITHM_CATEGORIES,
+  SSHAlgorithmCategory,
+  SUPPORTED_ALGORITHMS_BY_CATEGORY,
+} from "../../domain/sshAlgorithmList";
+import type { HostAlgorithmOverrides } from "../../domain/models";
+import { Button } from "../ui/button";
+import { Card } from "../ui/card";
+
+interface Props {
+  value: HostAlgorithmOverrides | undefined;
+  onChange: (next: HostAlgorithmOverrides | undefined) => void;
+  /**
+   * The host's current `legacyAlgorithms` value, used to seed the very
+   * first customization in each category with the *effective* default
+   * list (modern-only vs modern+legacy) rather than the full SUPPORTED
+   * set. Without this, unchecking a single algorithm in modern mode
+   * would silently start advertising CBC / arcfour / MD5 algorithms.
+   */
+  legacyEnabled: boolean;
+  /**
+   * Algorithm overrides this host would inherit from its group when its
+   * own field is unset. Used purely for display: an `undefined` value
+   * here means the host can freely use NetCatty defaults by resetting
+   * a category; a populated value means the host would inherit those
+   * lists, and resetting locally falls back to them — the panel
+   * surfaces that so the user knows the local Reset button doesn't
+   * jump them to NetCatty's defaults in that case.
+   */
+  inheritedFromGroup?: HostAlgorithmOverrides;
+}
+
+const CATEGORY_LABEL_KEY: Record<SSHAlgorithmCategory, string> = {
+  kex: "hostDetails.algorithms.category.kex",
+  cipher: "hostDetails.algorithms.category.cipher",
+  hmac: "hostDetails.algorithms.category.hmac",
+  serverHostKey: "hostDetails.algorithms.category.serverHostKey",
+  compress: "hostDetails.algorithms.category.compress",
+};
+
+/**
+ * Per-category SSH algorithm override editor.
+ *
+ * When a category's array is `undefined`, that category uses NetCatty's
+ * negotiated default list. When it's a non-empty array, that array fully
+ * replaces the offered list for the category.
+ *
+ * Picking zero algorithms in a category is equivalent to "use default" —
+ * an empty array would make ssh2 fail negotiation, so we normalize it
+ * back to `undefined` on save.
+ */
+export const AlgorithmOverridesPanel: React.FC<Props> = ({
+  value,
+  onChange,
+  legacyEnabled,
+  inheritedFromGroup,
+}) => {
+  const { t } = useI18n();
+  const effectiveDefault = useMemo(
+    () => effectiveDefaultAlgorithms(legacyEnabled),
+    [legacyEnabled],
+  );
+  // What the runtime *actually* inherits from the group for display
+  // purposes. `applyGroupDefaults` treats `host.algorithms` as an
+  // all-or-nothing boundary: once the host carries any local
+  // `algorithms` object the group's overrides stop being applied — even
+  // for categories the host didn't override. So as soon as `value` is
+  // non-undefined we must stop *displaying* inherited categories,
+  // otherwise the UI lies about what will be negotiated.
+  //
+  // The write-side (`updateCategory` / `toggleAlgorithm` / Reset) still
+  // consults the unconditional `inheritedFromGroup` so that the first
+  // user edit on an unset host carries the inherited categories into
+  // the host object, preventing the runtime's silent widening that
+  // motivated those write-side fixes.
+  const inheritedForDisplay = useMemo(
+    () => (value === undefined ? inheritedFromGroup : undefined),
+    [value, inheritedFromGroup],
+  );
+  const inheritedCategories = useMemo(() => {
+    if (!inheritedForDisplay) return [] as SSHAlgorithmCategory[];
+    return SSH_ALGORITHM_CATEGORIES.filter((category) => {
+      const list = inheritedForDisplay[category];
+      return Array.isArray(list) && list.length > 0;
+    });
+  }, [inheritedForDisplay]);
+
+  const updateCategory = useCallback(
+    (category: SSHAlgorithmCategory, selected: string[]) => {
+      // Start from the inherited group overrides so that touching one
+      // category doesn't silently drop inheritance for the others.
+      // `applyGroupDefaults` treats `host.algorithms` as an
+      // all-or-nothing inherit boundary: once the host carries any
+      // explicit object, the host's `algorithms` shadows the group's
+      // `algorithms` entirely. If the user customized cipher locally
+      // and the group restricted serverHostKey, simply storing
+      // `{ cipher: [...] }` on the host would lose the group's
+      // serverHostKey restriction. Persisting the inherited categories
+      // alongside keeps the effective offer intact.
+      const base: HostAlgorithmOverrides = inheritedFromGroup
+        ? { ...inheritedFromGroup }
+        : {};
+      const next: HostAlgorithmOverrides = { ...base, ...(value ?? {}) };
+      if (selected.length === 0) {
+        delete next[category];
+      } else {
+        next[category] = selected;
+      }
+      const hasAny = Object.values(next).some((arr) => Array.isArray(arr) && arr.length > 0);
+      onChange(hasAny ? next : undefined);
+    },
+    [value, onChange, inheritedFromGroup],
+  );
+
+  const toggleAlgorithm = useCallback(
+    (category: SSHAlgorithmCategory, algo: string) => {
+      const current = value?.[category];
+      if (!current) {
+        // First click in this category — seed with the *effective* offer
+        // for this category. If the group has set a list for this
+        // category, use that (so customizing one entry doesn't lose the
+        // group's narrowing). Otherwise seed from NetCatty's effective
+        // default, which already accounts for legacy mode. Seeding from
+        // SUPPORTED_ALGORITHMS_BY_CATEGORY would silently introduce
+        // legacy algorithms (CBC, arcfour, MD5) into the offered list.
+        const baseline = inheritedFromGroup?.[category] ?? effectiveDefault[category];
+        if (baseline.includes(algo)) {
+          updateCategory(category, baseline.filter((a) => a !== algo));
+        } else {
+          // The user clicked an algorithm not in the baseline — they
+          // want to opt INTO it. Start the override with the baseline
+          // plus this extra entry.
+          updateCategory(category, [...baseline, algo]);
+        }
+        return;
+      }
+      if (current.includes(algo)) {
+        updateCategory(category, current.filter((a) => a !== algo));
+      } else {
+        updateCategory(category, [...current, algo]);
+      }
+    },
+    [value, updateCategory, effectiveDefault, inheritedFromGroup],
+  );
+
+  const resetCategory = useCallback(
+    (category: SSHAlgorithmCategory) => {
+      const inherited = inheritedFromGroup?.[category];
+      const next: HostAlgorithmOverrides = { ...(value ?? {}) };
+      if (Array.isArray(inherited) && inherited.length > 0) {
+        // The group has an override for this category. Just deleting
+        // `next[category]` would *widen* the effective offer: because
+        // `applyGroupDefaults` treats `host.algorithms` as an
+        // all-or-nothing inherit boundary, once any other category
+        // remains on the host the group's `algorithms` object stops
+        // being inherited as a whole, and the missing category falls
+        // back to NetCatty defaults — not the group's narrower list.
+        // Persist the inherited list verbatim instead, so Reset means
+        // "use what this host would otherwise inherit" rather than
+        // "silently switch to NetCatty defaults".
+        next[category] = inherited.slice();
+      } else {
+        delete next[category];
+      }
+      const hasAny = Object.values(next).some((arr) => Array.isArray(arr) && arr.length > 0);
+      onChange(hasAny ? next : undefined);
+    },
+    [value, onChange, inheritedFromGroup],
+  );
+
+  const isCustomized = useCallback(
+    (category: SSHAlgorithmCategory) => {
+      const local = value?.[category];
+      if (!Array.isArray(local) || local.length === 0) return false;
+      // If the host's list is identical (order + contents) to the
+      // inherited list, the user hasn't really customized it — they
+      // either reset to the upstream value or never touched it directly.
+      // Suppressing the "customized" badge in that case keeps the UI
+      // honest about what the user actually changed.
+      const inherited = inheritedFromGroup?.[category];
+      if (Array.isArray(inherited)
+          && inherited.length === local.length
+          && inherited.every((a, i) => a === local[i])) {
+        return false;
+      }
+      return true;
+    },
+    [value, inheritedFromGroup],
+  );
+
+  const isChecked = useCallback(
+    (category: SSHAlgorithmCategory, algo: string) => {
+      const current = value?.[category];
+      if (current) return current.includes(algo);
+      // No host-local override for this category: reflect what the host
+      // would actually advertise. Uses `inheritedForDisplay` (the same
+      // gating the inherited notice uses) so that a host that already
+      // has any local override stops pretending its empty categories
+      // still come from the group — `applyGroupDefaults` won't apply
+      // them, and the runtime falls back to NetCatty defaults.
+      const baseline = inheritedForDisplay?.[category] ?? effectiveDefault[category];
+      return baseline.includes(algo);
+    },
+    [value, effectiveDefault, inheritedForDisplay],
+  );
+
+  return (
+    <div className="space-y-2">
+      <p className="text-xs text-muted-foreground break-words">
+        {t("hostDetails.algorithms.advanced.desc")}
+      </p>
+      {inheritedCategories.length > 0 && (
+        <div className="flex items-start gap-2 p-2 rounded-md bg-blue-500/10 border border-blue-500/20">
+          <p className="text-xs text-blue-700 dark:text-blue-300 break-words">
+            {t("hostDetails.algorithms.inheritedNotice")
+              .replace(
+                "{categories}",
+                inheritedCategories.map((c) => t(CATEGORY_LABEL_KEY[c])).join(", "),
+              )}
+          </p>
+        </div>
+      )}
+      {SSH_ALGORITHM_CATEGORIES.map((category) => {
+        const supported = SUPPORTED_ALGORITHMS_BY_CATEGORY[category];
+        const customized = isCustomized(category);
+        return (
+          <Card key={category} className="p-2 space-y-1.5 bg-background border-border/60">
+            <div className="flex items-center justify-between gap-2">
+              <p className="text-xs font-medium">
+                {t(CATEGORY_LABEL_KEY[category])}
+                {customized && (
+                  <span className="ml-1.5 text-[10px] text-yellow-600 dark:text-yellow-400">
+                    {t("hostDetails.algorithms.customized")}
+                  </span>
+                )}
+              </p>
+              {customized && (
+                <Button
+                  type="button"
+                  size="sm"
+                  variant="ghost"
+                  className="h-6 px-2 text-[11px]"
+                  onClick={() => resetCategory(category)}
+                >
+                  {t("hostDetails.algorithms.reset")}
+                </Button>
+              )}
+            </div>
+            <div className="grid grid-cols-1 gap-1">
+              {supported.map((algo) => (
+                <label
+                  key={algo}
+                  className="flex items-center gap-2 text-[11px] cursor-pointer select-none hover:bg-accent/40 rounded px-1 py-0.5"
+                >
+                  <input
+                    type="checkbox"
+                    className="h-3 w-3"
+                    checked={isChecked(category, algo)}
+                    onChange={() => toggleAlgorithm(category, algo)}
+                  />
+                  <span className="font-mono truncate" title={algo}>{algo}</span>
+                </label>
+              ))}
+            </div>
+          </Card>
+        );
+      })}
+    </div>
+  );
+};

components/keychain/IdentityPanel.tsx

@@ -11,6 +11,7 @@ import { Combobox } from '../ui/combobox';
 import { Input } from '../ui/input';
 import { Label } from '../ui/label';
 import { Popover,PopoverContent,PopoverTrigger } from '../ui/popover';
+import { Tooltip, TooltipContent, TooltipTrigger } from '../ui/tooltip';
 
 interface IdentityPanelProps {
     draftIdentity: Partial<Identity>;
@@ -129,15 +130,19 @@ export const IdentityPanel: React.FC<IdentityPanelProps> = ({
                     <span className="text-sm flex-1 truncate">
                         {selectedKey?.label || t('hostDetails.credential.missing')}
                     </span>
-                    <Button
-                        variant="ghost"
-                        size="icon"
-                        className="h-6 w-6"
-                        onClick={clearSelectedKey}
-                        title={t('common.clear')}
-                    >
-                        <X size={12} />
-                    </Button>
+                    <Tooltip>
+                        <TooltipTrigger asChild>
+                            <Button
+                                variant="ghost"
+                                size="icon"
+                                className="h-6 w-6"
+                                onClick={clearSelectedKey}
+                            >
+                                <X size={12} />
+                            </Button>
+                        </TooltipTrigger>
+                        <TooltipContent>{t('common.clear')}</TooltipContent>
+                    </Tooltip>
                 </div>
             )}
 
@@ -202,15 +207,19 @@ export const IdentityPanel: React.FC<IdentityPanelProps> = ({
                         icon={<Key size={14} className="text-muted-foreground" />}
                         className="flex-1"
                     />
-                    <Button
-                        variant="ghost"
-                        size="icon"
-                        className="h-8 w-8 shrink-0"
-                        onClick={() => setSelectedCredentialType(null)}
-                        title={t('common.cancel')}
-                    >
-                        <X size={14} />
-                    </Button>
+                    <Tooltip>
+                        <TooltipTrigger asChild>
+                            <Button
+                                variant="ghost"
+                                size="icon"
+                                className="h-8 w-8 shrink-0"
+                                onClick={() => setSelectedCredentialType(null)}
+                            >
+                                <X size={14} />
+                            </Button>
+                        </TooltipTrigger>
+                        <TooltipContent>{t('common.cancel')}</TooltipContent>
+                    </Tooltip>
                 </div>
             )}
 
@@ -230,15 +239,19 @@ export const IdentityPanel: React.FC<IdentityPanelProps> = ({
                         icon={<Shield size={14} className="text-muted-foreground" />}
                         className="flex-1"
                     />
-                    <Button
-                        variant="ghost"
-                        size="icon"
-                        className="h-8 w-8 shrink-0"
-                        onClick={() => setSelectedCredentialType(null)}
-                        title={t('common.cancel')}
-                    >
-                        <X size={14} />
-                    </Button>
+                    <Tooltip>
+                        <TooltipTrigger asChild>
+                            <Button
+                                variant="ghost"
+                                size="icon"
+                                className="h-8 w-8 shrink-0"
+                                onClick={() => setSelectedCredentialType(null)}
+                            >
+                                <X size={14} />
+                            </Button>
+                        </TooltipTrigger>
+                        <TooltipContent>{t('common.cancel')}</TooltipContent>
+                    </Tooltip>
                 </div>
             )}
 

components/keychain/index.ts

@@ -6,8 +6,7 @@
 
 // Utilities and types
 export {
-copyToClipboard,detectKeyType,generateMockKeyPair,getKeyIcon,
-getKeyTypeDisplay,isMacOS,type FilterTab,type PanelMode
+isMacOS,type FilterTab,type PanelMode
 } from './utils';
 
 // Card components

components/keychain/utils.ts

@@ -7,33 +7,6 @@ import React from 'react';
 import { logger } from '../../lib/logger';
 import { KeyType, SSHKey } from '../../types';
 
-/**
- * Generate mock key pair (for fallback when Electron backend is unavailable)
- */
-export const generateMockKeyPair = (type: KeyType, label: string, keySize?: number): { privateKey: string; publicKey: string } => {
-    const typeMap: Record<KeyType, string> = {
-        'ED25519': 'ed25519',
-        'ECDSA': `ecdsa-sha2-nistp${keySize || 256}`,
-        'RSA': 'rsa',
-    };
-
-    const randomId = crypto.randomUUID().replace(/-/g, '').substring(0, 32);
-
-    // Generate size-appropriate random data for more realistic keys
-    const keyLength = type === 'RSA' ? (keySize || 4096) / 8 : 32;
-    const randomData = Array.from(crypto.getRandomValues(new Uint8Array(keyLength)))
-        .map(b => b.toString(16).padStart(2, '0')).join('');
-
-    const privateKey = `-----BEGIN OPENSSH PRIVATE KEY-----
-b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW
-QyNTUxOQAAACB${randomId}AAAEC${randomData.substring(0, 64)}
------END OPENSSH PRIVATE KEY-----`;
-
-    const publicKey = `ssh-${typeMap[type]} AAAAC3NzaC1lZDI1NTE5AAAAI${randomId.substring(0, 20)} ${label}@netcatty`;
-
-    return { privateKey, publicKey };
-};
-
 /**
  * Get icon element for key source
  */

components/port-forwarding/NewFormPanel.tsx

@@ -12,6 +12,7 @@ import { TrafficDiagram } from '../TrafficDiagram';
 import { AsidePanel,AsidePanelContent,AsidePanelFooter } from '../ui/aside-panel';
 import { Button } from '../ui/button';
 import { Input } from '../ui/input';
+import { Tooltip, TooltipContent, TooltipTrigger } from '../ui/tooltip';
 import { Label } from '../ui/label';
 import { Switch } from '../ui/switch';
 import { getTypeLabel } from './utils';
@@ -183,14 +184,18 @@ export const NewFormPanel: React.FC<NewFormPanelProps> = ({
                     >
                         {t('common.cancel')}
                     </Button>
-                    <button
-                        className="text-xs text-muted-foreground hover:text-foreground/80 flex items-center gap-1 px-2 py-1 rounded hover:bg-foreground/5 transition-colors"
-                        onClick={onOpenWizard}
-                        title={t('pf.form.openWizardTitle')}
-                    >
-                        <Zap size={12} />
-                        {t('pf.form.openWizard')}
-                    </button>
+                    <Tooltip>
+                        <TooltipTrigger asChild>
+                            <button
+                                className="text-xs text-muted-foreground hover:text-foreground/80 flex items-center gap-1 px-2 py-1 rounded hover:bg-foreground/5 transition-colors"
+                                onClick={onOpenWizard}
+                            >
+                                <Zap size={12} />
+                                {t('pf.form.openWizard')}
+                            </button>
+                        </TooltipTrigger>
+                        <TooltipContent>{t('pf.form.openWizardTitle')}</TooltipContent>
+                    </Tooltip>
                 </div>
             </AsidePanelFooter>
         </AsidePanel>

components/port-forwarding/RuleCard.tsx

@@ -68,13 +68,26 @@ export const RuleCard: React.FC<RuleCardProps> = ({
                         <div className="flex-1 min-w-0">
                             <div className="flex items-center gap-2">
                                 <span className="text-sm font-semibold truncate">{rule.label}</span>
-                                <span
-                                    className={cn(
-                                        "h-2 w-2 rounded-full flex-shrink-0",
-                                        getStatusColor(rule.status)
-                                    )}
-                                    title={rule.status === 'error' && rule.error ? rule.error : undefined}
-                                />
+                                {rule.status === 'error' && rule.error ? (
+                                    <Tooltip>
+                                        <TooltipTrigger asChild>
+                                            <span
+                                                className={cn(
+                                                    "h-2 w-2 rounded-full flex-shrink-0 cursor-default",
+                                                    getStatusColor(rule.status)
+                                                )}
+                                            />
+                                        </TooltipTrigger>
+                                        <TooltipContent>{rule.error}</TooltipContent>
+                                    </Tooltip>
+                                ) : (
+                                    <span
+                                        className={cn(
+                                            "h-2 w-2 rounded-full flex-shrink-0",
+                                            getStatusColor(rule.status)
+                                        )}
+                                    />
+                                )}
                             </div>
                             <div className="flex items-center gap-2 text-[11px] text-muted-foreground">
                                 <TooltipProvider delayDuration={300}>

components/port-forwarding/index.ts

@@ -1,29 +1,17 @@
 /**
  * Port Forwarding components module
- * Re-exports all port forwarding sub-components
+ * Re-exports the entries consumed by the top-level port forwarding view.
  */
 
 export {
-  TYPE_DESCRIPTION_KEYS,
-  TYPE_LABEL_KEYS,
-  TYPE_MENU_LABEL_KEYS,
-  TYPE_ICONS,
   generateRuleLabel,
-  getStatusColor,
-  getTypeColor,
-  getTypeDescription,
-  getTypeLabel,
   getTypeMenuLabel,
 } from './utils';
 
 export { RuleCard } from './RuleCard';
-export type { RuleCardProps,ViewMode } from './RuleCard';
 
 export { WizardContent } from './WizardContent';
-export type { WizardContentProps,WizardStep } from './WizardContent';
 
 export { EditPanel } from './EditPanel';
-export type { EditPanelProps } from './EditPanel';
 
 export { NewFormPanel } from './NewFormPanel';
-export type { NewFormPanelProps } from './NewFormPanel';

components/port-forwarding/utils.tsx

@@ -1,23 +1,21 @@
 /**
  * Port Forwarding utilities and constants
  */
-import { Globe,Server,Shuffle } from 'lucide-react';
-import React from 'react';
 import { PortForwardingType } from '../../domain/models';
 
-export const TYPE_LABEL_KEYS: Record<PortForwardingType, string> = {
+const TYPE_LABEL_KEYS: Record<PortForwardingType, string> = {
   local: 'pf.type.local',
   remote: 'pf.type.remote',
   dynamic: 'pf.type.dynamic',
 };
 
-export const TYPE_MENU_LABEL_KEYS: Record<PortForwardingType, string> = {
+const TYPE_MENU_LABEL_KEYS: Record<PortForwardingType, string> = {
   local: 'pf.type.menu.local',
   remote: 'pf.type.menu.remote',
   dynamic: 'pf.type.menu.dynamic',
 };
 
-export const TYPE_DESCRIPTION_KEYS: Record<PortForwardingType, string> = {
+const TYPE_DESCRIPTION_KEYS: Record<PortForwardingType, string> = {
   local: 'pf.type.local.desc',
   remote: 'pf.type.remote.desc',
   dynamic: 'pf.type.dynamic.desc',
@@ -44,12 +42,6 @@ export function getTypeDescription(
   return t(TYPE_DESCRIPTION_KEYS[type]);
 }
 
-export const TYPE_ICONS: Record<PortForwardingType, React.ReactNode> = {
-  local: <Globe size={16} />,
-  remote: <Server size={16} />,
-  dynamic: <Shuffle size={16} />,
-};
-
 /**
  * Get status color class for a rule
  */

components/settings/ThemeSelectModal.tsx

@@ -15,6 +15,8 @@ interface ThemeSelectModalProps {
     onClose: () => void;
     selectedThemeId: string;
     onSelect: (themeId: string) => void;
+    filterType?: 'dark' | 'light';
+    showAutoOption?: boolean;
 }
 
 export const ThemeSelectModal: React.FC<ThemeSelectModalProps> = ({
@@ -22,6 +24,8 @@ export const ThemeSelectModal: React.FC<ThemeSelectModalProps> = ({
     onClose,
     selectedThemeId,
     onSelect,
+    filterType,
+    showAutoOption,
 }) => {
     const { t } = useI18n();
 
@@ -85,6 +89,8 @@ export const ThemeSelectModal: React.FC<ThemeSelectModalProps> = ({
                     <ThemeList
                         selectedThemeId={selectedThemeId}
                         onSelect={handleThemeSelect}
+                        filterType={filterType}
+                        showAutoOption={showAutoOption}
                     />
                 </div>
 

components/settings/tabs/SettingsAITab.tsx

@@ -48,6 +48,7 @@ import {
   buildManagedAgentState,
   getInitialManagedAgentPaths,
 } from "./ai/managedAgentState";
+import { splitClaudeEnv, buildClaudeEnv } from "./ai/claudeConfigEnv";
 
 // ---------------------------------------------------------------------------
 // Props
@@ -125,6 +126,29 @@ const SettingsAITab: React.FC<SettingsAITabProps> = ({
   const [claudePathInfo, setClaudePathInfo] = useState<AgentPathInfo | null>(null);
   const [claudeCustomPath, setClaudeCustomPath] = useState("");
   const [isResolvingClaude, setIsResolvingClaude] = useState(false);
+
+  const claudeManagedEnv = useMemo(
+    () => externalAgents.find((a) => a.id === "discovered_claude")?.env,
+    [externalAgents],
+  );
+  const { configDir: claudeConfigDir, envText: claudeEnvText } = useMemo(
+    () => splitClaudeEnv(claudeManagedEnv),
+    [claudeManagedEnv],
+  );
+
+  const updateClaudeEnv = useCallback(
+    (nextConfigDir: string, nextEnvText: string) => {
+      setExternalAgents((prev) =>
+        prev.map((a) =>
+          a.id === "discovered_claude"
+            ? { ...a, env: buildClaudeEnv(a.env, nextConfigDir, nextEnvText) }
+            : a,
+        ),
+      );
+    },
+    [setExternalAgents],
+  );
+
   const initialManagedPathsRef = useRef<{
     codex: string;
     claude: string;
@@ -542,6 +566,10 @@ const SettingsAITab: React.FC<SettingsAITabProps> = ({
               customPath={claudeCustomPath}
               onCustomPathChange={setClaudeCustomPath}
               onRecheckPath={() => void handleCheckCustomPath("claude")}
+              configDir={claudeConfigDir}
+              onConfigDirChange={(v) => updateClaudeEnv(v, claudeEnvText)}
+              envText={claudeEnvText}
+              onEnvTextChange={(v) => updateClaudeEnv(claudeConfigDir, v)}
             />
           </div>
 

components/settings/tabs/SettingsAppearanceTab.tsx

@@ -7,6 +7,7 @@ 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 { Tooltip, TooltipContent, TooltipTrigger } from "../../ui/tooltip";
 
 export default function SettingsAppearanceTab(props: {
   theme: "dark" | "light" | "system";
@@ -122,20 +123,23 @@ export default function SettingsAppearanceTab(props: {
   ) => (
     <div className="flex flex-wrap gap-2 justify-end">
       {options.map((preset) => (
-        <button
-          key={preset.id}
-          onClick={() => onChange(preset.id)}
-          className={cn(
-            "w-6 h-6 rounded-full flex items-center justify-center transition-all shadow-sm border border-border/70",
-            value === preset.id
-              ? "ring-2 ring-offset-2 ring-foreground scale-110"
-              : "hover:scale-105",
-          )}
-          style={getHslStyle(preset.tokens.background)}
-          title={preset.name}
-        >
-          {value === preset.id && <Check className="text-white drop-shadow-md" size={10} />}
-        </button>
+        <Tooltip key={preset.id}>
+          <TooltipTrigger asChild>
+            <button
+              onClick={() => onChange(preset.id)}
+              className={cn(
+                "w-6 h-6 rounded-full flex items-center justify-center transition-all shadow-sm border border-border/70",
+                value === preset.id
+                  ? "ring-2 ring-offset-2 ring-foreground scale-110"
+                  : "hover:scale-105",
+              )}
+              style={getHslStyle(preset.tokens.background)}
+            >
+              {value === preset.id && <Check className="text-white drop-shadow-md" size={10} />}
+            </button>
+          </TooltipTrigger>
+          <TooltipContent>{preset.name}</TooltipContent>
+        </Tooltip>
       ))}
     </div>
   );
@@ -212,42 +216,49 @@ export default function SettingsAppearanceTab(props: {
             <div className="text-sm font-medium">{t("settings.appearance.accentColor.custom")}</div>
             <div className="flex flex-wrap gap-2">
               {ACCENT_COLORS.map((c) => (
-                <button
-                  key={c.name}
-                  onClick={() => setCustomAccent(c.value)}
-                  className={cn(
-                    "w-6 h-6 rounded-full flex items-center justify-center transition-all shadow-sm",
-                    customAccent === c.value
-                      ? "ring-2 ring-offset-2 ring-foreground scale-110"
-                      : "hover:scale-105",
-                  )}
-                  style={getHslStyle(c.value)}
-                  title={c.name}
-                >
-                  {customAccent === c.value && <Check className="text-white drop-shadow-md" size={10} />}
-                </button>
+                <Tooltip key={c.name}>
+                  <TooltipTrigger asChild>
+                    <button
+                      onClick={() => setCustomAccent(c.value)}
+                      className={cn(
+                        "w-6 h-6 rounded-full flex items-center justify-center transition-all shadow-sm",
+                        customAccent === c.value
+                          ? "ring-2 ring-offset-2 ring-foreground scale-110"
+                          : "hover:scale-105",
+                      )}
+                      style={getHslStyle(c.value)}
+                    >
+                      {customAccent === c.value && <Check className="text-white drop-shadow-md" size={10} />}
+                    </button>
+                  </TooltipTrigger>
+                  <TooltipContent>{c.name}</TooltipContent>
+                </Tooltip>
               ))}
-              <label
-                className={cn(
-                  "w-6 h-6 rounded-full flex items-center justify-center transition-all shadow-sm cursor-pointer",
-                  "bg-gradient-to-br from-pink-500 via-purple-500 to-blue-500",
-                  !ACCENT_COLORS.some((c) => c.value === customAccent)
-                    ? "ring-2 ring-offset-2 ring-foreground scale-110"
-                    : "hover:scale-105",
-                )}
-                title={t("settings.appearance.customColor")}
-              >
-                <input
-                  type="color"
-                  className="sr-only"
-                  onChange={(e) => setCustomAccent(hexToHsl(e.target.value))}
-                />
-                {!ACCENT_COLORS.some((c) => c.value === customAccent) ? (
-                  <Check className="text-white drop-shadow-md" size={10} />
-                ) : (
-                  <Palette size={12} className="text-white drop-shadow-md" />
-                )}
-              </label>
+              <Tooltip>
+                <TooltipTrigger asChild>
+                  <label
+                    className={cn(
+                      "w-6 h-6 rounded-full flex items-center justify-center transition-all shadow-sm cursor-pointer",
+                      "bg-gradient-to-br from-pink-500 via-purple-500 to-blue-500",
+                      !ACCENT_COLORS.some((c) => c.value === customAccent)
+                        ? "ring-2 ring-offset-2 ring-foreground scale-110"
+                        : "hover:scale-105",
+                    )}
+                  >
+                    <input
+                      type="color"
+                      className="sr-only"
+                      onChange={(e) => setCustomAccent(hexToHsl(e.target.value))}
+                    />
+                    {!ACCENT_COLORS.some((c) => c.value === customAccent) ? (
+                      <Check className="text-white drop-shadow-md" size={10} />
+                    ) : (
+                      <Palette size={12} className="text-white drop-shadow-md" />
+                    )}
+                  </label>
+                </TooltipTrigger>
+                <TooltipContent>{t("settings.appearance.customColor")}</TooltipContent>
+              </Tooltip>
             </div>
           </div>
         )}

components/settings/tabs/SettingsFileAssociationsTab.tsx

@@ -11,6 +11,7 @@ import { netcattyBridge } from "../../../infrastructure/services/netcattyBridge"
 import { cn } from "../../../lib/utils";
 import { Button } from "../../ui/button";
 import { Label } from "../../ui/label";
+import { Tooltip, TooltipContent, TooltipTrigger } from "../../ui/tooltip";
 import { SectionHeader, SettingsTabContent } from "../settings-ui";
 
 const getOpenerLabel = (
@@ -527,31 +528,44 @@ export default function SettingsFileAssociationsTab() {
                     </td>
                     <td className="px-4 py-3 text-muted-foreground">
                       {openerType === 'system-app' && systemApp ? (
-                        <span title={systemApp.path}>{systemApp.name}</span>
+                        <Tooltip>
+                          <TooltipTrigger asChild>
+                            <span className="cursor-default">{systemApp.name}</span>
+                          </TooltipTrigger>
+                          <TooltipContent>{systemApp.path}</TooltipContent>
+                        </Tooltip>
                       ) : (
                         getOpenerLabel(openerType, systemApp, t)
                       )}
                     </td>
                     <td className="px-4 py-3 text-right space-x-1">
-                      <Button
-                        variant="ghost"
-                        size="icon"
-                        className="h-7 w-7"
-                        onClick={() => handleEdit(extension)}
-                        disabled={editingExtension === extension}
-                        title={t('common.edit')}
-                      >
-                        <Pencil size={14} />
-                      </Button>
-                      <Button
-                        variant="ghost"
-                        size="icon"
-                        className="h-7 w-7 text-destructive hover:text-destructive hover:bg-destructive/10"
-                        onClick={() => handleRemove(extension)}
-                        title={t('settings.sftpFileAssociations.remove')}
-                      >
-                        <Trash2 size={14} />
-                      </Button>
+                      <Tooltip>
+                        <TooltipTrigger asChild>
+                          <Button
+                            variant="ghost"
+                            size="icon"
+                            className="h-7 w-7"
+                            onClick={() => handleEdit(extension)}
+                            disabled={editingExtension === extension}
+                          >
+                            <Pencil size={14} />
+                          </Button>
+                        </TooltipTrigger>
+                        <TooltipContent>{t('common.edit')}</TooltipContent>
+                      </Tooltip>
+                      <Tooltip>
+                        <TooltipTrigger asChild>
+                          <Button
+                            variant="ghost"
+                            size="icon"
+                            className="h-7 w-7 text-destructive hover:text-destructive hover:bg-destructive/10"
+                            onClick={() => handleRemove(extension)}
+                          >
+                            <Trash2 size={14} />
+                          </Button>
+                        </TooltipTrigger>
+                        <TooltipContent>{t('settings.sftpFileAssociations.remove')}</TooltipContent>
+                      </Tooltip>
                     </td>
                   </tr>
                 ))}

components/settings/tabs/SettingsShortcutsTab.tsx

@@ -230,7 +230,7 @@ export default function SettingsShortcutsTab(props: {
                             <button
                               onClick={() => updateKeyBinding?.(binding.id, scheme, "Disabled")}
                               className="p-1 hover:bg-muted rounded"
-                              title={t("settings.shortcuts.setDisabled")}
+                              aria-label={t("settings.shortcuts.setDisabled")}
                             >
                               <Ban size={12} />
                             </button>
@@ -238,7 +238,7 @@ export default function SettingsShortcutsTab(props: {
                           <button
                             onClick={() => resetKeyBinding?.(binding.id, scheme)}
                             className="p-1 hover:bg-muted rounded"
-                            title="Reset to default"
+                            aria-label={t("settings.shortcuts.resetToDefault")}
                           >
                             <RotateCcw size={12} />
                           </button>

components/settings/tabs/SettingsSyncTab.tsx

@@ -6,12 +6,11 @@ import {
   buildLocalVaultPayload,
   buildSyncPayload,
   applySyncPayload,
+  getEffectivePortForwardingRulesForSync,
 } from "../../../application/syncPayload";
 import { applyProtectedSyncPayload } from "../../../application/localVaultBackups";
 import type { SyncableVaultData } from "../../../application/syncPayload";
 import { useI18n } from "../../../application/i18n/I18nProvider";
-import { STORAGE_KEY_PORT_FORWARDING } from "../../../infrastructure/config/storageKeys";
-import { localStorageAdapter } from "../../../infrastructure/persistence/localStorageAdapter";
 import { getEffectiveKnownHosts } from "../../../infrastructure/syncHelpers";
 import { CloudSyncSettings } from "../../CloudSyncSettings";
 import { SettingsTabContent } from "../settings-ui";
@@ -35,28 +34,7 @@ export default function SettingsSyncTab(props: {
   const { t } = useI18n();
 
   const getEffectivePortForwardingRules = useCallback((): PortForwardingRule[] => {
-    // If hook state is empty but localStorage has data, the async store
-    // initialization hasn't finished yet.  Read from localStorage directly
-    // to avoid uploading empty arrays and overwriting the remote snapshot.
-    let effectiveRules = portForwardingRules;
-    if (effectiveRules.length === 0) {
-      const stored = localStorageAdapter.read<PortForwardingRule[]>(
-        STORAGE_KEY_PORT_FORWARDING,
-      );
-      if (stored && Array.isArray(stored) && stored.length > 0) {
-        // Strip transient per-device fields (status, error, lastUsedAt)
-        // that setGlobalRules persists to localStorage but shouldn't be
-        // included in the cloud sync snapshot.
-        effectiveRules = stored.map(({ status: _status, error: _error, ...rest }) => ({
-          ...rest,
-          status: "inactive" as const,
-          error: undefined,
-          lastUsedAt: undefined,
-        }));
-      }
-    }
-
-    return effectiveRules;
+    return getEffectivePortForwardingRulesForSync(portForwardingRules) ?? [];
   }, [portForwardingRules]);
 
   const onBuildPayload = useCallback((): SyncPayload => {

components/settings/tabs/SettingsSystemTab.tsx

@@ -10,6 +10,7 @@ import type { UpdateState } from '../../../application/state/useUpdateCheck';
 import { SessionLogFormat, keyEventToString } from "../../../domain/models";
 import { TabsContent } from "../../ui/tabs";
 import { Button } from "../../ui/button";
+import { Tooltip, TooltipContent, TooltipTrigger } from "../../ui/tooltip";
 import { Toggle, Select, SettingRow } from "../settings-ui";
 import { cn } from "../../../lib/utils";
 
@@ -637,9 +638,14 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
                                 if (entry.uptimeSeconds != null) parts.push(`Uptime: ${entry.uptimeSeconds}s`);
                                 const text = parts.join('  ');
                                 return text ? (
-                                  <div className="text-muted-foreground truncate" title={text}>
-                                    {text}
-                                  </div>
+                                  <Tooltip>
+                                    <TooltipTrigger asChild>
+                                      <div className="text-muted-foreground truncate cursor-default">
+                                        {text}
+                                      </div>
+                                    </TooltipTrigger>
+                                    <TooltipContent>{text}</TooltipContent>
+                                  </Tooltip>
                                 ) : null;
                               })()}
                               {entry.stack && (
@@ -678,14 +684,18 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
                   <Trash2 size={14} />
                   {t("settings.system.crashLogs.clear")}
                 </Button>
-                <Button
-                  variant="ghost"
-                  size="icon"
-                  onClick={handleOpenCrashLogsDir}
-                  title={t("settings.system.openFolder")}
-                >
-                  <FolderOpen size={16} />
-                </Button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      onClick={handleOpenCrashLogsDir}
+                    >
+                      <FolderOpen size={16} />
+                    </Button>
+                  </TooltipTrigger>
+                  <TooltipContent>{t("settings.system.openFolder")}</TooltipContent>
+                </Tooltip>
               </div>
 
               {crashLogClearResult && (
@@ -716,16 +726,20 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
                     {isLoading ? "..." : (tempDirInfo?.path ?? "-")}
                   </p>
                 </div>
-                <Button
-                  variant="ghost"
-                  size="icon"
-                  className="shrink-0"
-                  onClick={handleOpenTempDir}
-                  disabled={!tempDirInfo?.path}
-                  title={t("settings.system.openFolder")}
-                >
-                  <FolderOpen size={16} />
-                </Button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className="shrink-0"
+                      onClick={handleOpenTempDir}
+                      disabled={!tempDirInfo?.path}
+                    >
+                      <FolderOpen size={16} />
+                    </Button>
+                  </TooltipTrigger>
+                  <TooltipContent>{t("settings.system.openFolder")}</TooltipContent>
+                </Tooltip>
               </div>
 
               {/* Stats */}
@@ -823,15 +837,19 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
                     {t("settings.sessionLogs.browse")}
                   </Button>
                   {sessionLogsDir && (
-                    <Button
-                      variant="ghost"
-                      size="icon"
-                      onClick={handleOpenSessionLogsDir}
-                      className="shrink-0"
-                      title={t("settings.sessionLogs.openFolder")}
-                    >
-                      <FolderOpen size={16} />
-                    </Button>
+                    <Tooltip>
+                      <TooltipTrigger asChild>
+                        <Button
+                          variant="ghost"
+                          size="icon"
+                          onClick={handleOpenSessionLogsDir}
+                          className="shrink-0"
+                        >
+                          <FolderOpen size={16} />
+                        </Button>
+                      </TooltipTrigger>
+                      <TooltipContent>{t("settings.sessionLogs.openFolder")}</TooltipContent>
+                    </Tooltip>
                   )}
                 </div>
                 <p className="text-xs text-muted-foreground">
@@ -902,13 +920,17 @@ const SettingsSystemTab: React.FC<SettingsSystemTabProps> = ({
                         : toggleWindowHotkey || t("settings.globalHotkey.notSet")}
                     </button>
                     {toggleWindowHotkey && (
-                      <button
-                        onClick={handleResetHotkey}
-                        className="p-1 hover:bg-muted rounded"
-                        title={t("settings.globalHotkey.reset")}
-                      >
-                        <RotateCcw size={14} />
-                      </button>
+                      <Tooltip>
+                        <TooltipTrigger asChild>
+                          <button
+                            onClick={handleResetHotkey}
+                            className="p-1 hover:bg-muted rounded"
+                          >
+                            <RotateCcw size={14} />
+                          </button>
+                        </TooltipTrigger>
+                        <TooltipContent>{t("settings.globalHotkey.reset")}</TooltipContent>
+                      </Tooltip>
                     )}
                   </div>
                 </SettingRow>

components/settings/tabs/SettingsTerminalTab.tsx

@@ -19,12 +19,15 @@ 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 { Textarea } from "../../ui/textarea";
+import { Select as ShadcnSelect, SelectContent, SelectItem, SelectTrigger, SelectValue } from "../../ui/select";
 import { SectionHeader, Select, SettingsTabContent, SettingRow, Toggle } from "../settings-ui";
 import { ThemeSelectModal } from "../ThemeSelectModal";
 import { TerminalFontSelect } from "../TerminalFontSelect";
 import { TerminalCjkFontSelect } from "../TerminalCjkFontSelect";
 import { CustomThemeModal } from "../../terminal/CustomThemeModal";
 import type { TerminalTheme } from "../../../domain/models";
+import { resolveFollowedTerminalThemeId, TERMINAL_THEME_AUTO } from "../../../domain/terminalAppearance";
 
 // Keyword highlight rules editor for global settings
 const DEFAULT_NEW_RULE_COLOR = '#F87171';
@@ -33,21 +36,25 @@ const AddCustomRuleDialog: React.FC<{
   open: boolean;
   onOpenChange: (open: boolean) => void;
   editRule?: KeywordHighlightRule | null;
+  isBuiltIn?: boolean;
   onAdd: (rule: KeywordHighlightRule) => void;
-}> = ({ open, onOpenChange, editRule, onAdd }) => {
+}> = ({ open, onOpenChange, editRule, isBuiltIn = false, onAdd }) => {
   const { t } = useI18n();
   const [label, setLabel] = useState('');
-  const [pattern, setPattern] = useState('');
+  // Multi-line text: one regex pattern per line. Built-in rules typically
+  // ship multiple patterns (e.g. several spellings of "error"), and the user
+  // is allowed to add as many as they like.
+  const [patternsText, setPatternsText] = 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); };
+  const reset = () => { setLabel(''); setPatternsText(''); setColor(DEFAULT_NEW_RULE_COLOR); setPatternError(null); };
 
   // Populate form when editing
   useEffect(() => {
     if (open && editRule) {
       setLabel(editRule.label);
-      setPattern(editRule.patterns[0] || '');
+      setPatternsText(editRule.patterns.join('\n'));
       setColor(editRule.color);
       setPatternError(null);
     } else if (!open) {
@@ -56,25 +63,43 @@ const AddCustomRuleDialog: React.FC<{
   }, [open, editRule]);
 
   const handleSubmit = () => {
-    if (!label.trim() || !pattern.trim()) return;
-    try { new RegExp(pattern, 'gi'); } catch {
-      setPatternError(t('settings.terminal.keywordHighlight.invalidPattern'));
-      return;
+    if (!label.trim()) return;
+    const patterns = patternsText
+      .split('\n')
+      .map((line) => line.trim())
+      .filter((line) => line.length > 0);
+    if (patterns.length === 0) return;
+    for (const p of patterns) {
+      try { new RegExp(p, '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 });
+    onAdd({
+      id: editRule?.id ?? crypto.randomUUID(),
+      label: label.trim(),
+      patterns,
+      color,
+      enabled: editRule?.enabled ?? true,
+      // Editing a built-in rule flips it into "user-customized" mode so the
+      // normalizer keeps the user's patterns across restarts.
+      customized: isBuiltIn ? true : editRule?.customized,
+    });
     reset();
     onOpenChange(false);
   };
 
+  const dialogTitleKey = editRule
+    ? (isBuiltIn
+      ? 'settings.terminal.keywordHighlight.editBuiltIn'
+      : 'settings.terminal.keywordHighlight.editCustom')
+    : 'settings.terminal.keywordHighlight.addCustom';
+
   return (
     <Dialog open={open} onOpenChange={(v) => { if (!v) reset(); onOpenChange(v); }}>
-      <DialogContent className="sm:max-w-[400px]">
+      <DialogContent className="sm:max-w-[440px]">
         <DialogHeader>
-          <DialogTitle>{editRule ? t('settings.terminal.keywordHighlight.editCustom') : t('settings.terminal.keywordHighlight.addCustom')}</DialogTitle>
+          <DialogTitle>{t(dialogTitleKey)}</DialogTitle>
         </DialogHeader>
         <div className="space-y-3 py-2">
           <div className="space-y-1.5">
@@ -94,16 +119,19 @@ const AddCustomRuleDialog: React.FC<{
           </div>
           <div className="space-y-1.5">
             <Label className="text-xs">{t('settings.terminal.keywordHighlight.patternField')}</Label>
-            <Input
+            <Textarea
               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")}
+              value={patternsText}
+              onChange={(e) => { setPatternsText(e.target.value); if (patternError) setPatternError(null); }}
+              rows={Math.max(3, Math.min(10, patternsText.split('\n').length + 1))}
+              className={cn("font-mono text-xs", patternError && "border-destructive")}
             />
+            <p className="text-[11px] text-muted-foreground">
+              {t('settings.terminal.keywordHighlight.patternHint')}
+            </p>
             {patternError && <div className="text-xs text-destructive">{patternError}</div>}
           </div>
-          {label.trim() && pattern.trim() && !patternError && (
+          {label.trim() && patternsText.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>
@@ -112,7 +140,7 @@ const AddCustomRuleDialog: React.FC<{
         </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>
+          <Button onClick={handleSubmit} disabled={!label.trim() || !patternsText.trim()}>{editRule ? t('common.save') : t('common.add')}</Button>
         </DialogFooter>
       </DialogContent>
     </Dialog>
@@ -132,26 +160,43 @@ const KeywordHighlightRulesEditor: React.FC<{
   return (
     <div className="space-y-2.5">
       {rules.map((rule) => {
-        const custom = !isBuiltIn(rule.id);
+        const builtIn = isBuiltIn(rule.id);
+        const customized = builtIn && rule.customized;
         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))}
-                  />
-                </>
+              <Pencil
+                size={10}
+                className="flex-shrink-0 opacity-0 group-hover:opacity-100 transition-opacity text-muted-foreground cursor-pointer hover:text-foreground"
+                onClick={() => { setEditingRule(rule); setAddDialogOpen(true); }}
+              />
+              {!builtIn && (
+                <Trash2
+                  size={10}
+                  className="flex-shrink-0 opacity-0 group-hover:opacity-100 transition-opacity text-muted-foreground cursor-pointer hover:text-destructive"
+                  onClick={() => onChange(rules.filter((r) => r.id !== rule.id))}
+                />
+              )}
+              {customized && (
+                <RotateCcw
+                  size={10}
+                  className="flex-shrink-0 opacity-0 group-hover:opacity-100 transition-opacity text-muted-foreground cursor-pointer hover:text-foreground"
+                  aria-label={t('settings.terminal.keywordHighlight.resetBuiltIn')}
+                  onClick={() => {
+                    // Drop the user's customizations and restore the shipped
+                    // defaults for label/patterns. Color stays whatever the
+                    // user picked (color is the only built-in property they
+                    // can edit without flipping `customized`).
+                    const def = DEFAULT_KEYWORD_HIGHLIGHT_RULES.find((r) => r.id === rule.id);
+                    if (!def) return;
+                    onChange(rules.map((r) => r.id === rule.id
+                      ? { ...def, color: r.color, enabled: r.enabled, customized: false }
+                      : r));
+                  }}
+                />
               )}
             </div>
             <label className="relative flex-shrink-0">
@@ -185,14 +230,18 @@ const KeywordHighlightRulesEditor: React.FC<{
           size="sm"
           className="flex-1 text-muted-foreground hover:text-foreground"
           onClick={() => {
+            // Restore every built-in rule back to shipped defaults
+            // (label/patterns/color), drop customizations, and keep the user's
+            // custom rules untouched.
             onChange(rules.map((rule) => {
               const def = DEFAULT_KEYWORD_HIGHLIGHT_RULES.find((r) => r.id === rule.id);
-              return def ? { ...rule, color: def.color } : rule;
+              if (!def) return rule;
+              return { ...def, enabled: rule.enabled, customized: false };
             }));
           }}
         >
           <RotateCcw size={14} className="mr-1.5" />
-          {t("settings.terminal.keywordHighlight.resetColors")}
+          {t("settings.terminal.keywordHighlight.resetDefaults")}
         </Button>
       </div>
 
@@ -200,6 +249,7 @@ const KeywordHighlightRulesEditor: React.FC<{
         open={addDialogOpen}
         onOpenChange={(v) => { setAddDialogOpen(v); if (!v) setEditingRule(null); }}
         editRule={editingRule}
+        isBuiltIn={editingRule ? isBuiltIn(editingRule.id) : false}
         onAdd={(rule) => {
           if (editingRule) {
             onChange(rules.map((r) => r.id === editingRule.id ? rule : r));
@@ -266,6 +316,12 @@ export default function SettingsTerminalTab(props: {
   setTerminalThemeId: (id: string) => void;
   followAppTerminalTheme: boolean;
   setFollowAppTerminalTheme: (value: boolean) => void;
+  terminalThemeDarkId: string;
+  setTerminalThemeDarkId: (id: string) => void;
+  terminalThemeLightId: string;
+  setTerminalThemeLightId: (id: string) => void;
+  lightUiThemeId: string;
+  darkUiThemeId: string;
   terminalFontFamilyId: string;
   setTerminalFontFamilyId: (id: string) => void;
   terminalFontSize: number;
@@ -284,6 +340,12 @@ export default function SettingsTerminalTab(props: {
     setTerminalThemeId,
     followAppTerminalTheme,
     setFollowAppTerminalTheme,
+    terminalThemeDarkId,
+    setTerminalThemeDarkId,
+    terminalThemeLightId,
+    setTerminalThemeLightId,
+    lightUiThemeId,
+    darkUiThemeId,
     terminalFontFamilyId,
     setTerminalFontFamilyId,
     terminalFontSize,
@@ -315,6 +377,7 @@ export default function SettingsTerminalTab(props: {
     setShowCustomShellInput(!discoveredShells.some(s => s.id === terminalSettings.localShell));
   }, [discoveredShells, terminalSettings.localShell]);
   const [themeModalOpen, setThemeModalOpen] = useState(false);
+  const [themeModalSlot, setThemeModalSlot] = useState<'dark' | 'light' | null>(null);
 
   // Subscribe to custom theme changes so editing in-place triggers re-render
   const customThemes = useCustomThemes();
@@ -326,6 +389,38 @@ export default function SettingsTerminalTab(props: {
       || TERMINAL_THEMES[0];
   }, [terminalThemeId, customThemes]);
 
+  // Preview themes for the follow-app per-mode pickers. resolvedTheme is
+  // forced per slot so each preview reflects exactly that mode's selection.
+  const darkPreviewTheme = useMemo(() => {
+    const id = resolveFollowedTerminalThemeId({
+      resolvedTheme: 'dark',
+      terminalThemeDarkId, terminalThemeLightId,
+      lightUiThemeId, darkUiThemeId, fallbackThemeId: terminalThemeId,
+    });
+    return TERMINAL_THEMES.find(t => t.id === id)
+      || customThemes.find(t => t.id === id)
+      // Mirror the runtime fallback in useSettingsState.currentTerminalTheme:
+      // a deleted per-mode override falls back to the manual theme, not [0].
+      || TERMINAL_THEMES.find(t => t.id === terminalThemeId)
+      || customThemes.find(t => t.id === terminalThemeId)
+      || TERMINAL_THEMES[0];
+  }, [terminalThemeDarkId, terminalThemeLightId, lightUiThemeId, darkUiThemeId, terminalThemeId, customThemes]);
+
+  const lightPreviewTheme = useMemo(() => {
+    const id = resolveFollowedTerminalThemeId({
+      resolvedTheme: 'light',
+      terminalThemeDarkId, terminalThemeLightId,
+      lightUiThemeId, darkUiThemeId, fallbackThemeId: terminalThemeId,
+    });
+    return TERMINAL_THEMES.find(t => t.id === id)
+      || customThemes.find(t => t.id === id)
+      // Mirror the runtime fallback in useSettingsState.currentTerminalTheme:
+      // a deleted per-mode override falls back to the manual theme, not [0].
+      || TERMINAL_THEMES.find(t => t.id === terminalThemeId)
+      || customThemes.find(t => t.id === terminalThemeId)
+      || TERMINAL_THEMES[0];
+  }, [terminalThemeDarkId, terminalThemeLightId, lightUiThemeId, darkUiThemeId, terminalThemeId, customThemes]);
+
   const handleAutocompleteGhostTextChange = useCallback((enabled: boolean) => {
     updateTerminalSetting("autocompleteGhostText", enabled);
     if (enabled) {
@@ -507,7 +602,34 @@ export default function SettingsTerminalTab(props: {
           />
         </SettingRow>
       </div>
-      {!followAppTerminalTheme && (
+      {followAppTerminalTheme ? (
+        <div className="space-y-2">
+          <div>
+            <div className="text-xs text-muted-foreground mb-1.5 px-1">
+              {t("settings.terminal.theme.darkTheme")}
+            </div>
+            <ThemePreviewButton
+              theme={darkPreviewTheme}
+              onClick={() => setThemeModalSlot('dark')}
+              buttonLabel={terminalThemeDarkId === TERMINAL_THEME_AUTO
+                ? t("settings.terminal.theme.auto")
+                : t("settings.terminal.theme.selectButton")}
+            />
+          </div>
+          <div>
+            <div className="text-xs text-muted-foreground mb-1.5 px-1">
+              {t("settings.terminal.theme.lightTheme")}
+            </div>
+            <ThemePreviewButton
+              theme={lightPreviewTheme}
+              onClick={() => setThemeModalSlot('light')}
+              buttonLabel={terminalThemeLightId === TERMINAL_THEME_AUTO
+                ? t("settings.terminal.theme.auto")
+                : t("settings.terminal.theme.selectButton")}
+            />
+          </div>
+        </div>
+      ) : (
         <ThemePreviewButton
           theme={currentTheme}
           onClick={() => setThemeModalOpen(true)}
@@ -521,6 +643,17 @@ export default function SettingsTerminalTab(props: {
         selectedThemeId={terminalThemeId}
         onSelect={setTerminalThemeId}
       />
+      <ThemeSelectModal
+        open={themeModalSlot !== null}
+        onClose={() => setThemeModalSlot(null)}
+        selectedThemeId={themeModalSlot === 'dark' ? terminalThemeDarkId : terminalThemeLightId}
+        onSelect={(id) => {
+          if (themeModalSlot === 'dark') setTerminalThemeDarkId(id);
+          else if (themeModalSlot === 'light') setTerminalThemeLightId(id);
+        }}
+        filterType={themeModalSlot === 'light' ? 'light' : 'dark'}
+        showAutoOption
+      />
 
       {/* Theme action buttons */}
       <div className="flex items-center gap-2 -mt-1">
@@ -761,6 +894,12 @@ export default function SettingsTerminalTab(props: {
         >
           <Toggle checked={terminalSettings.altAsMeta} onChange={(v) => updateTerminalSetting("altAsMeta", v)} />
         </SettingRow>
+        <SettingRow
+          label={t("settings.terminal.keyboard.optionArrowWordJump")}
+          description={t("settings.terminal.keyboard.optionArrowWordJump.desc")}
+        >
+          <Toggle checked={terminalSettings.optionArrowWordJump} onChange={(v) => updateTerminalSetting("optionArrowWordJump", v)} />
+        </SettingRow>
       </div>
 
       <SectionHeader title={t("settings.terminal.section.accessibility")} />
@@ -841,6 +980,13 @@ export default function SettingsTerminalTab(props: {
           <Toggle checked={terminalSettings.preserveSelectionOnInput ?? false} onChange={(v) => updateTerminalSetting("preserveSelectionOnInput", v)} />
         </SettingRow>
 
+        <SettingRow
+          label={t("settings.terminal.behavior.forcePromptNewLine")}
+          description={t("settings.terminal.behavior.forcePromptNewLine.desc")}
+        >
+          <Toggle checked={terminalSettings.forcePromptNewLine ?? false} onChange={(v) => updateTerminalSetting("forcePromptNewLine", v)} />
+        </SettingRow>
+
         <SettingRow
           label={t("settings.terminal.behavior.osc52Clipboard")}
           description={t("settings.terminal.behavior.osc52Clipboard.desc")}
@@ -934,6 +1080,29 @@ export default function SettingsTerminalTab(props: {
         </div>
       </div>
 
+      <SectionHeader title={t("settings.terminal.section.startupCommand")} />
+      <div className="rounded-lg border bg-card p-4">
+        <p className="text-sm text-muted-foreground mb-3">
+          {t("settings.terminal.startupCommandDelay.desc")}
+        </p>
+        <div className="space-y-1">
+          <Label className="text-xs">{t("settings.terminal.startupCommandDelay.label")}</Label>
+          <Input
+            type="number"
+            min={0}
+            max={10000}
+            value={terminalSettings.startupCommandDelayMs}
+            onChange={(e) => {
+              const val = parseInt(e.target.value);
+              if (!isNaN(val) && val >= 0 && val <= 10000) {
+                updateTerminalSetting("startupCommandDelayMs", val);
+              }
+            }}
+            className="w-full"
+          />
+        </div>
+      </div>
+
       <SectionHeader title={t("settings.terminal.section.keywordHighlight")} />
       <div className="rounded-lg border bg-card p-4">
         <div className="flex items-center justify-between mb-4">
@@ -960,35 +1129,41 @@ export default function SettingsTerminalTab(props: {
           description={t("settings.terminal.localShell.shell.desc")}
         >
           <div className="flex flex-col gap-1 items-end">
-            <select
-              className="h-9 w-48 rounded-md border border-input bg-background px-3 text-sm"
+            <ShadcnSelect
               value={
                 showCustomShellInput
                   ? "__custom__"
-                  : terminalSettings.localShell || ""
+                  : (terminalSettings.localShell || "__default__")
               }
-              onChange={(e) => {
-                const value = e.target.value;
+              onValueChange={(value) => {
                 if (value === "__custom__") {
                   setCustomShellDraft(terminalSettings.localShell || "");
                   setCustomShellModalOpen(true);
+                } else if (value === "__default__") {
+                  setShowCustomShellInput(false);
+                  updateTerminalSetting("localShell", "");
                 } else {
                   setShowCustomShellInput(false);
                   updateTerminalSetting("localShell", value);
                 }
               }}
             >
-              <option value="">
-                {t("settings.terminal.localShell.shell.default")}
-                {defaultShell ? ` (${defaultShell.split(/[/\\]/).pop()})` : ""}
-              </option>
-              {discoveredShells.map((shell) => (
-                <option key={shell.id} value={shell.id}>
-                  {shell.name}
-                </option>
-              ))}
-              <option value="__custom__">{t("settings.terminal.localShell.shell.custom")}</option>
-            </select>
+              <SelectTrigger className="h-9 w-48 text-sm">
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="__default__">
+                  {t("settings.terminal.localShell.shell.default")}
+                  {defaultShell ? ` (${defaultShell.split(/[/\\]/).pop()})` : ""}
+                </SelectItem>
+                {discoveredShells.map((shell) => (
+                  <SelectItem key={shell.id} value={shell.id}>
+                    {shell.name}
+                  </SelectItem>
+                ))}
+                <SelectItem value="__custom__">{t("settings.terminal.localShell.shell.custom")}</SelectItem>
+              </SelectContent>
+            </ShadcnSelect>
             {showCustomShellInput && (
               <span className="text-xs text-muted-foreground truncate max-w-48">
                 {terminalSettings.localShell}

components/settings/tabs/ai/ClaudeCodeCard.tsx

@@ -1,10 +1,11 @@
-import React from "react";
-import { RefreshCw } from "lucide-react";
+import React, { useEffect, useState } from "react";
+import { ChevronDown, 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";
+import { parseEnvLines, serializeEnvLines } from "./claudeConfigEnv";
 
 export const ClaudeCodeCard: React.FC<{
   pathInfo: AgentPathInfo | null;
@@ -12,15 +13,40 @@ export const ClaudeCodeCard: React.FC<{
   customPath: string;
   onCustomPathChange: (path: string) => void;
   onRecheckPath: () => void;
+  configDir: string;
+  onConfigDirChange: (value: string) => void;
+  envText: string;
+  onEnvTextChange: (value: string) => void;
 }> = ({
   pathInfo,
   isResolvingPath,
   customPath,
   onCustomPathChange,
   onRecheckPath,
+  configDir,
+  onConfigDirChange,
+  envText,
+  onEnvTextChange,
 }) => {
   const { t } = useI18n();
   const found = pathInfo?.available;
+  // Collapsed by default; auto-expand when the user already has config so it
+  // isn't hidden. Local UI state — not persisted.
+  const [configOpen, setConfigOpen] = useState(
+    () => Boolean(configDir.trim() || envText.trim()),
+  );
+
+  // The env editor keeps the raw text the user types. Persisting parses it into
+  // a record (dropping incomplete lines), so binding the textarea directly to
+  // the persisted value would erase a key the moment it's typed before its "=".
+  // Only resync from the persisted value when it changes for some reason other
+  // than our own parse→serialize round-trip.
+  const [envDraft, setEnvDraft] = useState(envText);
+  useEffect(() => {
+    setEnvDraft((prev) =>
+      serializeEnvLines(parseEnvLines(prev)) === envText ? prev : envText,
+    );
+  }, [envText]);
 
   const statusText = isResolvingPath
     ? t('ai.claude.detecting')
@@ -83,6 +109,53 @@ export const ClaudeCodeCard: React.FC<{
           </div>
         </div>
       ) : null}
+
+      {/* Authentication & config (optional, collapsible) */}
+      <div className="border-t border-border/60 pt-3">
+        <button
+          type="button"
+          onClick={() => setConfigOpen((v) => !v)}
+          aria-expanded={configOpen}
+          className="flex w-full items-center justify-between gap-2 text-left"
+        >
+          <span className="text-xs font-medium text-muted-foreground">
+            {t('ai.claude.configSection')}
+          </span>
+          <ChevronDown
+            size={14}
+            className={cn("text-muted-foreground transition-transform", configOpen && "rotate-180")}
+          />
+        </button>
+        {configOpen && (
+          <div className="space-y-3 mt-3">
+            <div className="space-y-1.5">
+              <label htmlFor="claude-config-dir" className="text-xs text-muted-foreground">{t('ai.claude.configDir')}</label>
+              <input
+                id="claude-config-dir"
+                type="text"
+                value={configDir}
+                onChange={(e) => onConfigDirChange(e.target.value)}
+                placeholder={t('ai.claude.configDir.placeholder')}
+                className="w-full 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"
+              />
+              <p className="text-[11px] text-muted-foreground leading-4">{t('ai.claude.configDir.hint')}</p>
+            </div>
+            <div className="space-y-1.5">
+              <label htmlFor="claude-env-vars" className="text-xs text-muted-foreground">{t('ai.claude.envVars')}</label>
+              <textarea
+                id="claude-env-vars"
+                value={envDraft}
+                onChange={(e) => { setEnvDraft(e.target.value); onEnvTextChange(e.target.value); }}
+                placeholder={t('ai.claude.envVars.placeholder')}
+                rows={3}
+                spellCheck={false}
+                className="w-full rounded-md border border-input bg-background px-3 py-2 text-sm font-mono placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring resize-y"
+              />
+              <p className="text-[11px] text-muted-foreground leading-4">{t('ai.claude.envVars.hint')}</p>
+            </div>
+          </div>
+        )}
+      </div>
     </div>
   );
 };

components/settings/tabs/ai/ModelSelector.tsx

@@ -1,8 +1,11 @@
 import React, { useCallback, useEffect, useMemo, useState } from "react";
 import { Check, ChevronDown, RefreshCw } from "lucide-react";
-import type { AIProviderId } from "../../../../infrastructure/ai/types";
+import type { AIProviderId, ProviderStyle } from "../../../../infrastructure/ai/types";
+import { resolveProviderStyle } from "../../../../infrastructure/ai/types";
+import { buildModelDiscoveryHeaders, resolveModelsDiscoveryEndpoint } from "../../../../infrastructure/ai/modelDiscoveryHeaders";
 import { useI18n } from "../../../../application/i18n/I18nProvider";
 import { Button } from "../../../ui/button";
+import { Tooltip, TooltipContent, TooltipTrigger } from "../../../ui/tooltip";
 import { cn } from "../../../../lib/utils";
 import type { FetchedModel } from "./types";
 import { getFetchBridge } from "./types";
@@ -15,8 +18,10 @@ export const ModelSelector: React.FC<{
   placeholder?: string;
   apiKey?: string;
   providerId?: AIProviderId;
+  /** Optional protocol-family override; falls back to `providerId` via {@link resolveProviderStyle}. */
+  style?: ProviderStyle;
   skipTLSVerify?: boolean;
-}> = ({ value, onChange, baseURL, modelsEndpoint, placeholder, apiKey, providerId, skipTLSVerify }) => {
+}> = ({ value, onChange, baseURL, modelsEndpoint, placeholder, apiKey, providerId, style, skipTLSVerify }) => {
   const { t } = useI18n();
   const [models, setModels] = useState<FetchedModel[]>([]);
   const [isLoading, setIsLoading] = useState(false);
@@ -24,12 +29,19 @@ export const ModelSelector: React.FC<{
   const [isOpen, setIsOpen] = useState(false);
   const [hasFetched, setHasFetched] = useState(false);
 
+  // Resolve the wire-protocol family: prefer an explicit style override (set in
+  // the form), then fall back to the providerId-derived default.
+  const resolvedStyle: ProviderStyle = style
+    ?? (providerId ? resolveProviderStyle({ providerId }) : "openai");
+  // Endpoint follows the resolved style so a providerId+style mismatch (e.g.
+  // Anthropic providerId switched to OpenAI style) still hits the right path.
+  const effectiveModelsEndpoint = resolveModelsDiscoveryEndpoint(resolvedStyle, modelsEndpoint);
   // Ollama runs locally without auth; all other providers need an API key to list models
   const needsApiKey = providerId !== "ollama";
-  const canFetch = !!modelsEndpoint && (!needsApiKey || !!apiKey);
+  const canFetch = !!effectiveModelsEndpoint && (!needsApiKey || !!apiKey);
 
   const fetchModels = useCallback(async () => {
-    if (!modelsEndpoint) return;
+    if (!effectiveModelsEndpoint) return;
     const bridge = getFetchBridge();
     if (!bridge?.aiFetch) return;
 
@@ -41,16 +53,8 @@ export const ModelSelector: React.FC<{
       if (bridge.aiAllowlistAddHost && baseURL) {
         await bridge.aiAllowlistAddHost(baseURL);
       }
-      const url = `${baseURL.replace(/\/+$/, "")}${modelsEndpoint}`;
-      const headers: Record<string, string> = {};
-      if (apiKey) {
-        if (providerId === "anthropic") {
-          headers["x-api-key"] = apiKey;
-          headers["anthropic-version"] = "2023-06-01";
-        } else {
-          headers["Authorization"] = `Bearer ${apiKey}`;
-        }
-      }
+      const url = `${baseURL.replace(/\/+$/, "")}${effectiveModelsEndpoint}`;
+      const headers = buildModelDiscoveryHeaders(resolvedStyle, apiKey);
       const result = await bridge.aiFetch(url, "GET", headers, undefined, undefined, undefined, undefined, skipTLSVerify);
       if (!result.ok) {
         setError(`Failed to fetch models (${result.error || "unknown error"})`);
@@ -69,7 +73,7 @@ export const ModelSelector: React.FC<{
     } finally {
       setIsLoading(false);
     }
-  }, [baseURL, modelsEndpoint, apiKey, providerId, skipTLSVerify]);
+  }, [baseURL, effectiveModelsEndpoint, apiKey, resolvedStyle, skipTLSVerify]);
 
   // Auto-fetch when dropdown first opens
   useEffect(() => {
@@ -120,16 +124,20 @@ export const ModelSelector: React.FC<{
           )}
         </div>
         {canFetch && (
-          <Button
-            variant="outline"
-            size="sm"
-            onClick={() => { setHasFetched(false); void fetchModels(); }}
-            disabled={isLoading}
-            className="shrink-0 px-2"
-            title={t('ai.providers.refreshModels')}
-          >
-            <RefreshCw size={14} className={isLoading ? "animate-spin" : ""} />
-          </Button>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <Button
+                variant="outline"
+                size="sm"
+                onClick={() => { setHasFetched(false); void fetchModels(); }}
+                disabled={isLoading}
+                className="shrink-0 px-2"
+              >
+                <RefreshCw size={14} className={isLoading ? "animate-spin" : ""} />
+              </Button>
+            </TooltipTrigger>
+            <TooltipContent>{t('ai.providers.refreshModels')}</TooltipContent>
+          </Tooltip>
         )}
       </div>
 

components/settings/tabs/ai/ProviderCard.tsx

@@ -3,6 +3,7 @@ import { Pencil, Trash2 } from "lucide-react";
 import type { ProviderConfig } from "../../../../infrastructure/ai/types";
 import { useI18n } from "../../../../application/i18n/I18nProvider";
 import { Toggle } from "../../settings-ui";
+import { Tooltip, TooltipContent, TooltipTrigger } from "../../../ui/tooltip";
 import { cn } from "../../../../lib/utils";
 import { ProviderIconBadge } from "./ProviderIconBadge";
 import { ProviderConfigForm } from "./ProviderConfigForm";
@@ -29,7 +30,7 @@ export const ProviderCard: React.FC<{
     >
       <div className="flex items-center gap-3">
         {/* Provider icon */}
-        <ProviderIconBadge providerId={provider.providerId} />
+        <ProviderIconBadge provider={provider} />
 
         {/* Info */}
         <div className="flex-1 min-w-0">
@@ -61,20 +62,28 @@ export const ProviderCard: React.FC<{
 
         {/* Actions */}
         <div className="flex items-center gap-1 shrink-0">
-          <button
-            onClick={onEdit}
-            className="p-1.5 rounded-md text-muted-foreground hover:text-foreground hover:bg-muted transition-colors"
-            title={t('ai.providers.configure')}
-          >
-            <Pencil size={14} />
-          </button>
-          <button
-            onClick={onRemove}
-            className="p-1.5 rounded-md text-muted-foreground hover:text-destructive hover:bg-destructive/10 transition-colors"
-            title={t('ai.providers.remove')}
-          >
-            <Trash2 size={14} />
-          </button>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <button
+                onClick={onEdit}
+                className="p-1.5 rounded-md text-muted-foreground hover:text-foreground hover:bg-muted transition-colors"
+              >
+                <Pencil size={14} />
+              </button>
+            </TooltipTrigger>
+            <TooltipContent>{t('ai.providers.configure')}</TooltipContent>
+          </Tooltip>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <button
+                onClick={onRemove}
+                className="p-1.5 rounded-md text-muted-foreground hover:text-destructive hover:bg-destructive/10 transition-colors"
+              >
+                <Trash2 size={14} />
+              </button>
+            </TooltipTrigger>
+            <TooltipContent>{t('ai.providers.remove')}</TooltipContent>
+          </Tooltip>
           <Toggle checked={provider.enabled} onChange={onToggleEnabled} />
         </div>
       </div>

components/settings/tabs/ai/ProviderConfigForm.tsx

@@ -1,12 +1,51 @@
-import React, { useCallback, useEffect, useState } from "react";
-import { Check, ChevronDown, ChevronRight, Eye, EyeOff } from "lucide-react";
-import type { ProviderConfig, ProviderAdvancedParams } from "../../../../infrastructure/ai/types";
-import { PROVIDER_PRESETS } from "../../../../infrastructure/ai/types";
+import React, { useCallback, useEffect, useRef, useState } from "react";
+import { Check, ChevronDown, ChevronRight, Eye, EyeOff, Pencil, Upload, RotateCcw, X } from "lucide-react";
+import type { ProviderConfig, ProviderAdvancedParams, ProviderStyle } from "../../../../infrastructure/ai/types";
+import { PROVIDER_PRESETS, resolveProviderStyle } from "../../../../infrastructure/ai/types";
 import { encryptField, decryptField } from "../../../../infrastructure/persistence/secureFieldAdapter";
 import { useI18n } from "../../../../application/i18n/I18nProvider";
 import { Button } from "../../../ui/button";
+import { cn } from "../../../../lib/utils";
+import type { BuiltinProviderIcon } from "./types";
+import { BUILTIN_PROVIDER_ICONS } from "./types";
 import type { ProviderFormState } from "./types";
 import { ModelSelector } from "./ModelSelector";
+import { ProviderIconBadge } from "./ProviderIconBadge";
+
+const ICON_PIXEL_SIZE = 64;
+const ICON_WEBP_QUALITY = 0.85;
+const MAX_UPLOAD_BYTES = 5 * 1024 * 1024;
+
+async function compressIconFileToDataUrl(file: File): Promise<string> {
+  if (file.size > MAX_UPLOAD_BYTES) {
+    throw new Error("Image too large; please use an image under 5 MB.");
+  }
+  const sourceUrl = await new Promise<string>((resolve, reject) => {
+    const reader = new FileReader();
+    reader.onload = () => resolve(reader.result as string);
+    reader.onerror = () => reject(reader.error ?? new Error("Failed to read file"));
+    reader.readAsDataURL(file);
+  });
+  const img = await new Promise<HTMLImageElement>((resolve, reject) => {
+    const el = new Image();
+    el.onload = () => resolve(el);
+    el.onerror = () => reject(new Error("Failed to decode image"));
+    el.src = sourceUrl;
+  });
+  const canvas = document.createElement("canvas");
+  canvas.width = ICON_PIXEL_SIZE;
+  canvas.height = ICON_PIXEL_SIZE;
+  const ctx = canvas.getContext("2d");
+  if (!ctx) throw new Error("Canvas 2D context unavailable");
+  ctx.clearRect(0, 0, ICON_PIXEL_SIZE, ICON_PIXEL_SIZE);
+  const scale = Math.min(ICON_PIXEL_SIZE / img.width, ICON_PIXEL_SIZE / img.height);
+  const w = img.width * scale;
+  const h = img.height * scale;
+  ctx.drawImage(img, (ICON_PIXEL_SIZE - w) / 2, (ICON_PIXEL_SIZE - h) / 2, w, h);
+  return canvas.toDataURL("image/webp", ICON_WEBP_QUALITY);
+}
+
+const STYLE_OPTIONS: ReadonlyArray<ProviderStyle> = ["anthropic", "openai", "google"];
 
 export const ProviderConfigForm: React.FC<{
   provider: ProviderConfig;
@@ -14,6 +53,8 @@ export const ProviderConfigForm: React.FC<{
   onCancel: () => void;
 }> = ({ provider, onSave, onCancel }) => {
   const { t } = useI18n();
+  const fileInputRef = useRef<HTMLInputElement | null>(null);
+
   const [form, setForm] = useState<ProviderFormState>({
     name: provider.name ?? PROVIDER_PRESETS[provider.providerId]?.name ?? "",
     apiKey: "",
@@ -21,13 +62,24 @@ export const ProviderConfigForm: React.FC<{
     defaultModel: provider.defaultModel ?? "",
     skipTLSVerify: provider.skipTLSVerify ?? false,
     advancedParams: provider.advancedParams ?? {},
+    style: provider.style ?? "",
+    iconId: provider.iconId ?? "",
+    iconDataUrl: provider.iconDataUrl ?? "",
   });
-  const isCustom = provider.providerId === "custom";
   const [showApiKey, setShowApiKey] = useState(false);
   const [isDecrypting, setIsDecrypting] = useState(false);
   const [showAdvanced, setShowAdvanced] = useState(false);
+  const [showIconPicker, setShowIconPicker] = useState(false);
+  const [iconError, setIconError] = useState<string | null>(null);
 
   const preset = PROVIDER_PRESETS[provider.providerId];
+  const resolvedStyle: ProviderStyle = form.style || resolveProviderStyle({ providerId: provider.providerId });
+  const previewProvider: Pick<ProviderConfig, "providerId" | "name" | "iconId" | "iconDataUrl"> = {
+    providerId: provider.providerId,
+    name: form.name,
+    iconId: form.iconId || undefined,
+    iconDataUrl: form.iconDataUrl || undefined,
+  };
 
   // Decrypt and load existing API key on mount
   useEffect(() => {
@@ -62,6 +114,31 @@ export const ProviderConfigForm: React.FC<{
     });
   }, []);
 
+  const handleIconFileSelect = useCallback(async (file: File | null) => {
+    setIconError(null);
+    if (!file) return;
+    if (!/^image\//.test(file.type)) {
+      setIconError(t("ai.providers.icon.errorType"));
+      return;
+    }
+    try {
+      const dataUrl = await compressIconFileToDataUrl(file);
+      setForm((prev) => ({ ...prev, iconDataUrl: dataUrl, iconId: "" }));
+    } catch (err) {
+      setIconError(err instanceof Error ? err.message : String(err));
+    }
+  }, [t]);
+
+  const handlePickBuiltin = useCallback((icon: BuiltinProviderIcon) => {
+    setIconError(null);
+    setForm((prev) => ({ ...prev, iconId: icon.id, iconDataUrl: "", name: icon.name }));
+  }, []);
+
+  const handleResetIcon = useCallback(() => {
+    setIconError(null);
+    setForm((prev) => ({ ...prev, iconId: "", iconDataUrl: "" }));
+  }, []);
+
   const handleSave = useCallback(async () => {
     const cleanedParams: ProviderAdvancedParams = {};
     const ap = form.advancedParams;
@@ -71,12 +148,18 @@ export const ProviderConfigForm: React.FC<{
     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 trimmedName = form.name.trim();
+    const defaultName = PROVIDER_PRESETS[provider.providerId]?.name ?? "";
+
     const updates: Partial<ProviderConfig> = {
+      name: trimmedName || defaultName,
       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() } : {}),
+      style: form.style || undefined,
+      iconId: form.iconId || undefined,
+      iconDataUrl: form.iconDataUrl || undefined,
     };
 
     // Encrypt API key before saving
@@ -87,23 +170,133 @@ export const ProviderConfigForm: React.FC<{
     }
 
     onSave(updates);
-  }, [form, onSave, isCustom]);
+  }, [form, onSave, provider.providerId]);
 
   return (
     <div className="mt-3 space-y-3 border-t border-border/40 pt-3">
-      {/* Name (custom providers only) */}
-      {isCustom && (
-        <div className="space-y-1.5">
-          <label className="text-xs font-medium text-muted-foreground">{t('ai.providers.name')}</label>
+      {/* Display: icon + name */}
+      <div className="space-y-1.5">
+        <label className="text-xs font-medium text-muted-foreground">{t('ai.providers.name')}</label>
+        <div className="flex items-center gap-2">
+          <button
+            type="button"
+            onClick={() => setShowIconPicker((v) => !v)}
+            className="group relative shrink-0 rounded-md transition-all hover:brightness-110 hover:ring-2 hover:ring-primary/45 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-primary/60"
+            aria-label={t('ai.providers.icon.change')}
+            title={t('ai.providers.icon.change')}
+          >
+            <ProviderIconBadge provider={previewProvider} />
+            <span
+              aria-hidden="true"
+              className="pointer-events-none absolute -bottom-1 -right-1 flex h-4 w-4 items-center justify-center rounded-full border border-background bg-primary text-primary-foreground opacity-0 shadow-sm transition-opacity group-hover:opacity-100 group-focus-visible:opacity-100"
+            >
+              <Pencil size={9} strokeWidth={2.5} />
+            </span>
+          </button>
           <input
             type="text"
             value={form.name}
             onChange={(e) => setForm((prev) => ({ ...prev, name: e.target.value }))}
             placeholder={t('ai.providers.name.placeholder')}
-            className="w-full h-8 rounded-md border border-input bg-background px-3 text-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+            className="flex-1 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>
-      )}
+        {showIconPicker && (
+          <div className="rounded-md border border-border/50 bg-muted/20 p-2 space-y-2">
+            <div className="grid grid-cols-[repeat(auto-fill,minmax(120px,1fr))] gap-1.5">
+              {BUILTIN_PROVIDER_ICONS.map((icon) => {
+                const isSelected = form.iconId === icon.id && !form.iconDataUrl;
+                return (
+                  <button
+                    key={icon.id}
+                    type="button"
+                    onClick={() => (isSelected ? handleResetIcon() : handlePickBuiltin(icon))}
+                    title={icon.label}
+                    aria-label={icon.label}
+                    aria-pressed={isSelected}
+                    className={cn(
+                      "flex items-center gap-2 px-2 py-1.5 rounded-md border text-left transition-colors min-w-0",
+                      isSelected
+                        ? "border-primary/70 bg-primary/15"
+                        : "border-transparent hover:border-border hover:bg-muted/40",
+                    )}
+                  >
+                    <ProviderIconBadge
+                      provider={{ providerId: provider.providerId, name: icon.label, iconId: icon.id }}
+                      size="md"
+                    />
+                    <span className="text-xs text-foreground/85 truncate">{icon.label}</span>
+                  </button>
+                );
+              })}
+            </div>
+            <div className="flex items-center gap-2 pt-2 border-t border-border/40">
+              <input
+                ref={fileInputRef}
+                type="file"
+                accept="image/*"
+                className="hidden"
+                onChange={(e) => void handleIconFileSelect(e.target.files?.[0] ?? null)}
+              />
+              <Button variant="ghost" size="sm" onClick={() => fileInputRef.current?.click()}>
+                <Upload size={12} className="mr-1.5" />
+                {t('ai.providers.icon.upload')}
+              </Button>
+              <Button variant="ghost" size="sm" onClick={handleResetIcon}>
+                <RotateCcw size={12} className="mr-1.5" />
+                {t('ai.providers.icon.reset')}
+              </Button>
+              {form.iconDataUrl && (
+                <span className="text-[10px] text-muted-foreground">{t('ai.providers.icon.uploadedNote')}</span>
+              )}
+              <div className="ml-auto" />
+              <Button
+                variant="ghost"
+                size="sm"
+                onClick={() => setShowIconPicker(false)}
+                aria-label={t('ai.providers.icon.close')}
+                title={t('ai.providers.icon.close')}
+              >
+                <X size={12} className="mr-1.5" />
+                {t('ai.providers.icon.close')}
+              </Button>
+            </div>
+            {iconError && <p className="text-[11px] text-destructive">{iconError}</p>}
+          </div>
+        )}
+      </div>
+
+      {/* Provider style */}
+      <div className="space-y-1.5">
+        <label className="text-xs font-medium text-muted-foreground">{t('ai.providers.style')}</label>
+        <div className="flex items-center gap-1.5">
+          {STYLE_OPTIONS.map((style) => {
+            const isSelected = resolvedStyle === style;
+            const isInherited = !form.style && isSelected;
+            return (
+              <button
+                key={style}
+                type="button"
+                onClick={() => setForm((prev) => ({ ...prev, style: prev.style === style ? "" : style }))}
+                className={cn(
+                  "h-7 px-2.5 rounded-md text-xs border transition-colors",
+                  isSelected
+                    ? "border-primary/70 bg-primary/15 text-foreground"
+                    : "border-border/50 bg-background text-muted-foreground hover:text-foreground hover:bg-muted/40",
+                )}
+                aria-pressed={isSelected}
+              >
+                {t(`ai.providers.style.${style}`)}
+                {isInherited && (
+                  <span className="ml-1 text-[9px] text-muted-foreground/70">({t('ai.providers.style.inherited')})</span>
+                )}
+              </button>
+            );
+          })}
+        </div>
+        <p className="text-[11px] text-muted-foreground/70">{t('ai.providers.style.help')}</p>
+      </div>
+
       {/* API Key */}
       <div className="space-y-1.5">
         <label className="text-xs font-medium text-muted-foreground">{t('ai.providers.apiKey')}</label>
@@ -150,6 +343,7 @@ export const ProviderConfigForm: React.FC<{
           modelsEndpoint={preset?.modelsEndpoint}
           apiKey={form.apiKey}
           providerId={provider.providerId}
+          style={resolvedStyle}
           skipTLSVerify={form.skipTLSVerify}
         />
       </div>

components/settings/tabs/ai/ProviderIconBadge.tsx

@@ -1,29 +1,117 @@
 import React from "react";
 import { cn } from "../../../../lib/utils";
+import type { ProviderConfig } from "../../../../infrastructure/ai/types";
 import type { SettingsIconId } from "./types";
-import { SETTINGS_ICON_PATHS, SETTINGS_ICON_COLORS } from "./types";
+import {
+  BUILTIN_PROVIDER_ICON_BY_ID,
+  SETTINGS_ICON_PATHS,
+  SETTINGS_ICON_COLORS,
+} from "./types";
 
-export const ProviderIconBadge: React.FC<{
-  providerId: SettingsIconId;
-  size?: "sm" | "md";
-}> = ({ providerId, size = "md" }) => (
-  <div
-    className={cn(
-      "rounded-md flex items-center justify-center shrink-0 overflow-hidden",
-      size === "sm" ? "w-5 h-5" : "w-8 h-8",
-      SETTINGS_ICON_COLORS[providerId],
-    )}
-  >
-    <img
-      src={SETTINGS_ICON_PATHS[providerId]}
-      alt=""
-      aria-hidden="true"
-      draggable={false}
+/**
+ * Optional ProviderConfig-like shape for per-provider customization. Only the
+ * fields used by the badge are listed so non-provider call sites (Claude/Copilot
+ * agent cards) can still pass a bare `providerId`.
+ */
+type ProviderLike = Pick<ProviderConfig, "providerId" | "name" | "iconId" | "iconDataUrl">;
+
+interface BaseProps {
+  size?: "xs" | "sm" | "md";
+}
+
+type Props =
+  | (BaseProps & { providerId: SettingsIconId; provider?: undefined })
+  | (BaseProps & { provider: ProviderLike; providerId?: undefined });
+
+const BADGE_DIMENSIONS = {
+  xs: "w-4 h-4",
+  sm: "w-5 h-5",
+  md: "w-8 h-8",
+} as const;
+
+const IMG_DIMENSIONS = {
+  xs: "w-2.5 h-2.5",
+  sm: "w-3 h-3",
+  md: "w-4 h-4",
+} as const;
+
+const UPLOAD_IMG_DIMENSIONS = {
+  xs: "w-4 h-4",
+  sm: "w-5 h-5",
+  md: "w-8 h-8",
+} as const;
+
+export const ProviderIconBadge: React.FC<Props> = (props) => {
+  const size = props.size ?? "md";
+  const dim = BADGE_DIMENSIONS[size];
+
+  // Branch 1: user-uploaded data URL — render verbatim, no filter, neutral bg.
+  if (props.provider?.iconDataUrl) {
+    return (
+      <div className={cn("rounded-md flex items-center justify-center shrink-0 overflow-hidden bg-zinc-900/40", dim)}>
+        <img
+          src={props.provider.iconDataUrl}
+          alt=""
+          aria-hidden="true"
+          draggable={false}
+          className={cn("object-contain", UPLOAD_IMG_DIMENSIONS[size])}
+        />
+      </div>
+    );
+  }
+
+  // Branch 2: built-in iconId (lobe-icons subset).
+  const iconId = props.provider?.iconId;
+  if (iconId) {
+    const builtin = BUILTIN_PROVIDER_ICON_BY_ID[iconId];
+    if (builtin) {
+      return (
+        <div className={cn("rounded-md flex items-center justify-center shrink-0 overflow-hidden", dim, builtin.bgColor)}>
+          <img
+            src={builtin.path}
+            alt=""
+            aria-hidden="true"
+            draggable={false}
+            className={cn("object-contain brightness-0 invert", IMG_DIMENSIONS[size])}
+          />
+        </div>
+      );
+    }
+  }
+
+  // Branch 3: providerId → existing built-in fallback table.
+  const fallbackId: SettingsIconId | undefined =
+    props.providerId ?? (props.provider ? (props.provider.providerId as SettingsIconId) : undefined);
+  if (fallbackId && fallbackId in SETTINGS_ICON_PATHS) {
+    return (
+      <div className={cn("rounded-md flex items-center justify-center shrink-0 overflow-hidden", dim, SETTINGS_ICON_COLORS[fallbackId])}>
+        <img
+          src={SETTINGS_ICON_PATHS[fallbackId]}
+          alt=""
+          aria-hidden="true"
+          draggable={false}
+          className={cn(
+            "object-contain",
+            fallbackId === "copilot" ? "brightness-0" : "brightness-0 invert",
+            IMG_DIMENSIONS[size],
+          )}
+        />
+      </div>
+    );
+  }
+
+  // Branch 4: letter avatar from the provider name.
+  const letter = (props.provider?.name?.trim().charAt(0) ?? "?").toUpperCase();
+  return (
+    <div
       className={cn(
-        "object-contain",
-        providerId === "copilot" ? "brightness-0" : "brightness-0 invert",
-        size === "sm" ? "w-3 h-3" : "w-4 h-4",
+        "rounded-md flex items-center justify-center shrink-0 overflow-hidden bg-zinc-600 text-white font-medium",
+        dim,
+        size === "md" ? "text-sm" : size === "sm" ? "text-[10px]" : "text-[9px]",
       )}
-    />
-  </div>
-);
+      aria-hidden="true"
+    >
+      {letter}
+    </div>
+  );
+};

components/settings/tabs/ai/claudeConfigEnv.ts

@@ -0,0 +1,65 @@
+/**
+ * Pure helpers for the Claude Code card's "config directory + environment
+ * variables" editor. The managed Claude agent stores everything in its
+ * ExternalAgentConfig.env; this splits that into the editable pieces and
+ * recombines them. CLAUDE_CODE_EXECUTABLE is owned by path discovery, so it
+ * is preserved across edits but never shown in the env editor.
+ */
+
+const CONFIG_DIR_KEY = "CLAUDE_CONFIG_DIR";
+const MANAGED_KEYS = new Set(["CLAUDE_CODE_EXECUTABLE", CONFIG_DIR_KEY]);
+
+export function parseEnvLines(text: string): Record<string, string> {
+  const out: Record<string, string> = {};
+  for (const rawLine of String(text || "").split("\n")) {
+    const line = rawLine.trim();
+    if (!line || line.startsWith("#")) continue;
+    const eq = line.indexOf("=");
+    if (eq <= 0) continue;
+    const key = line.slice(0, eq).trim();
+    const value = line.slice(eq + 1).trim();
+    if (key) out[key] = value;
+  }
+  return out;
+}
+
+export function serializeEnvLines(env: Record<string, string>): string {
+  return Object.entries(env)
+    .map(([k, v]) => `${k}=${v}`)
+    .join("\n");
+}
+
+export function splitClaudeEnv(
+  env: Record<string, string> | undefined,
+): { configDir: string; envText: string } {
+  if (!env) return { configDir: "", envText: "" };
+  const configDir = env[CONFIG_DIR_KEY] ?? "";
+  const rest: Record<string, string> = {};
+  for (const [k, v] of Object.entries(env)) {
+    if (MANAGED_KEYS.has(k)) continue;
+    rest[k] = v;
+  }
+  return { configDir, envText: serializeEnvLines(rest) };
+}
+
+export function buildClaudeEnv(
+  prevEnv: Record<string, string> | undefined,
+  configDir: string,
+  envText: string,
+): Record<string, string> | undefined {
+  const next: Record<string, string> = {};
+  // Preserve discovery-owned key if present.
+  const exe = prevEnv?.CLAUDE_CODE_EXECUTABLE;
+  if (exe) next.CLAUDE_CODE_EXECUTABLE = exe;
+
+  const trimmedDir = String(configDir || "").trim();
+  if (trimmedDir) next[CONFIG_DIR_KEY] = trimmedDir;
+
+  // Drop managed keys if a user typed them into the free-text editor — the
+  // config-dir field and path discovery own CLAUDE_CONFIG_DIR / CLAUDE_CODE_EXECUTABLE.
+  const parsed = parseEnvLines(envText);
+  for (const key of MANAGED_KEYS) delete parsed[key];
+  Object.assign(next, parsed);
+
+  return Object.keys(next).length > 0 ? next : undefined;
+}