Merge pull request #688 from binaricat/feat/ui-matched-terminal-themes

feat: add Follow Application Theme for terminal + 14 UI-matched themes

.github/workflows/build.yml

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

AGENTS.md

@@ -18,7 +18,7 @@ This project is wired around three layers: domain (pure logic), application stat
 - **UI** (`components/`, `App.tsx`): Presentation; depends on hooks and domain helpers only.
 
 ## How Things Talk
-- UI calls application hooks → hooks call domain helpers → persistence/config via infrastructure adapters.
+- UI calls application hooks -> hooks call domain helpers -> persistence/config via infrastructure adapters.
 - `App.tsx` wires hooks to components; no business logic should live in components beyond view glue.
 - Local storage keys are centralized in `infrastructure/config/storageKeys.ts`; avoid ad-hoc `localStorage` calls elsewhere.
 
@@ -44,6 +44,12 @@ This project is wired around three layers: domain (pure logic), application stat
 - Avoid direct network/fetch in components; add a service/adaptor first.
 - Maintain ASCII-only unless required by existing file content.
 
+## Review Boundaries
+- Treat `electron/cli/*`, `netcatty-tool-cli`, the CLI discovery file, and the local TCP bridge as internal Netcatty integration surfaces unless a task explicitly says otherwise.
+- Do not review those surfaces as public APIs by default, and do not assume they must support third-party callers, manual launches, or non-Netcatty agents.
+- On supported first-party paths, assume Netcatty's own launcher provides required integration environment such as `NETCATTY_TOOL_CLI_DISCOVERY_FILE`.
+- If a review concern depends on external exposure, third-party compatibility, or public API stability, call it out as out of scope unless the task explicitly includes that contract.
+
 ---
 
 ## Aside Panel Design System
@@ -54,20 +60,20 @@ VaultView subpages (Hosts, Keychain, Port Forwarding, Snippets, Known Hosts) sha
 
 Import from `./ui/aside-panel`:
 ```tsx
-import { 
-  AsidePanel, 
-  AsidePanelHeader, 
-  AsidePanelContent, 
+import {
+  AsidePanel,
+  AsidePanelHeader,
+  AsidePanelContent,
   AsidePanelFooter,
   AsideActionMenu,
-  AsideActionMenuItem 
+  AsideActionMenuItem
 } from "./ui/aside-panel";
 ```
 
 ### Basic Usage
 ```tsx
-<AsidePanel 
-  open={isOpen} 
+<AsidePanel
+  open={isOpen}
   onClose={handleClose}
   title="Panel Title"
   subtitle="Optional subtitle"

App.tsx

@@ -14,6 +14,7 @@ import { initializeFonts } from './application/state/fontStore';
 import { initializeUIFonts } from './application/state/uiFontStore';
 import { I18nProvider, useI18n } from './application/i18n/I18nProvider';
 import { matchesKeyBinding } from './domain/models';
+import { resolveGroupDefaults, applyGroupDefaults } from './domain/groupConfig';
 import { resolveHostAuth } from './domain/sshAuth';
 import { resolveHostTerminalThemeId } from './domain/terminalAppearance';
 import { collectSessionIds } from './domain/workspace';
@@ -23,18 +24,21 @@ import { applySyncPayload } from './application/syncPayload';
 import { getCredentialProtectionAvailability } from './infrastructure/services/credentialProtection';
 import { netcattyBridge } from './infrastructure/services/netcattyBridge';
 import { localStorageAdapter } from './infrastructure/persistence/localStorageAdapter';
+import { AlertTriangle, Download, Trash2 } from 'lucide-react';
 import { STORAGE_KEY_DEBUG_HOTKEYS } from './infrastructure/config/storageKeys';
 import { TopTabs } from './components/TopTabs';
 import { Button } from './components/ui/button';
-import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle } from './components/ui/dialog';
+import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle } from './components/ui/dialog';
 import { Input } from './components/ui/input';
 import { Label } from './components/ui/label';
 import { ToastProvider, toast } from './components/ui/toast';
 import { VaultView, VaultSection } from './components/VaultView';
+import { QuickAddSnippetDialog } from './components/QuickAddSnippetDialog';
 import { KeyboardInteractiveModal, KeyboardInteractiveRequest } from './components/KeyboardInteractiveModal';
 import { PassphraseModal, PassphraseRequest } from './components/PassphraseModal';
 import { cn } from './lib/utils';
 import { classifyLocalShellType } from './lib/localShell';
+import { useDiscoveredShells, resolveShellSetting } from './lib/useDiscoveredShells';
 import { ConnectionLog, Host, HostProtocol, SerialConfig, TerminalSession, TerminalTheme } from './types';
 import { LogView as LogViewType } from './application/state/useSessionState';
 import type { SftpView as SftpViewComponent } from './components/SftpView';
@@ -175,16 +179,19 @@ function App({ settings }: { settings: SettingsState }) {
   const [passphraseQueue, setPassphraseQueue] = useState<PassphraseRequest[]>([]);
 
   const {
+    theme,
     setTheme,
     resolvedTheme,
     terminalThemeId,
     setTerminalThemeId,
+    followAppTerminalTheme,
     currentTerminalTheme,
     terminalFontFamilyId,
     setTerminalFontFamilyId,
     terminalFontSize,
     setTerminalFontSize,
     terminalSettings,
+    updateTerminalSetting,
     hotkeyScheme,
     keyBindings,
     isHotkeyRecording,
@@ -200,10 +207,11 @@ function App({ settings }: { settings: SettingsState }) {
     sessionLogsDir,
     sessionLogsFormat,
     reapplyCurrentTheme,
-    immersiveMode,
     workspaceFocusStyle,
   } = settings;
 
+  const discoveredShells = useDiscoveredShells();
+
   // Sync workspace focus indicator style to DOM for CSS targeting
   useEffect(() => {
     if (workspaceFocusStyle === 'border') {
@@ -239,8 +247,11 @@ function App({ settings }: { settings: SettingsState }) {
     deleteConnectionLog,
     clearUnsavedConnectionLogs,
     updateHostDistro,
+    updateHostLastConnected,
     convertKnownHostToHost,
     importDataFromString,
+    groupConfigs,
+    updateGroupConfigs,
   } = useVaultState();
 
   const {
@@ -305,6 +316,8 @@ function App({ settings }: { settings: SettingsState }) {
     () => new Map(sessions.map((session) => [session.id, session])),
     [sessions],
   );
+  const sessionByIdRef = useRef(sessionById);
+  sessionByIdRef.current = sessionById;
   const workspaceById = useMemo(
     () => new Map(workspaces.map((workspace) => [workspace.id, workspace])),
     [workspaces],
@@ -317,6 +330,11 @@ function App({ settings }: { settings: SettingsState }) {
     if (activeTabId === 'vault' || activeTabId === 'sftp') return null;
 
     const resolveTheme = (s: TerminalSession): TerminalTheme => {
+      // When "Follow Application Theme" is on, the UI-matched terminal
+      // theme overrides everything — including per-host theme overrides.
+      // This ensures all terminals match the app chrome regardless of
+      // individual host settings.
+      if (followAppTerminalTheme) return currentTerminalTheme;
       const host = hostById.get(s.hostId) ?? null;
       const themeId = resolveHostTerminalThemeId(host, currentTerminalTheme.id);
       return themeById.get(themeId) || currentTerminalTheme;
@@ -349,10 +367,9 @@ function App({ settings }: { settings: SettingsState }) {
     const session = sessionById.get(activeTabId);
     if (!session) return null;
     return resolveTheme(session);
-  }, [activeTabId, currentTerminalTheme, hostById, sessionById, themeById, workspaceById]);
+  }, [activeTabId, currentTerminalTheme, followAppTerminalTheme, hostById, sessionById, themeById, workspaceById]);
 
   useImmersiveMode({
-    isImmersive: immersiveMode,
     activeTabId,
     activeTerminalTheme,
     restoreOriginalTheme: reapplyCurrentTheme,
@@ -373,7 +390,7 @@ function App({ settings }: { settings: SettingsState }) {
   );
 
   // Auto-sync hook for cloud sync
-  const { syncNow: handleSyncNow } = useAutoSync({
+  const { syncNow: handleSyncNow, emptyVaultConflict, resolveEmptyVaultConflict } = useAutoSync({
     hosts,
     keys,
     identities,
@@ -382,6 +399,7 @@ function App({ settings }: { settings: SettingsState }) {
     snippetPackages,
     portForwardingRules: portForwardingRulesForSync,
     knownHosts,
+    groupConfigs,
     settingsVersion: settings.settingsVersion,
     onApplyPayload: (payload) => {
       applySyncPayload(payload, {
@@ -426,7 +444,8 @@ function App({ settings }: { settings: SettingsState }) {
     }
 
     if (start) {
-      void startTunnel(rule, host, hosts, keys, identities, (status, error) => {
+      const effectiveHost = resolveEffectiveHost(host);
+      void startTunnel(rule, effectiveHost, hosts, keys, identities, (status, error) => {
         if (status === "error" && error) toast.error(error);
       }, rule.autoStart);
       return;
@@ -441,10 +460,12 @@ function App({ settings }: { settings: SettingsState }) {
       return;
     }
 
+    const effectiveHost = resolveEffectiveHost(host);
+
     const { username, hostname: localHost } = systemInfoRef.current;
-    if (host.protocol === 'serial') {
+    if (effectiveHost.protocol === 'serial') {
       const portName = host.hostname.split('/').pop() || host.hostname;
-      const sessionId = connectToHost(host);
+      const sessionId = connectToHost(effectiveHost);
       addConnectionLog({
         sessionId,
         hostId: host.id,
@@ -460,9 +481,9 @@ function App({ settings }: { settings: SettingsState }) {
       return;
     }
 
-    const protocol = host.moshEnabled ? 'mosh' : (host.protocol || 'ssh');
-    const resolvedAuth = resolveHostAuth({ host, keys, identities });
-    const sessionId = connectToHost(host);
+    const protocol = effectiveHost.moshEnabled ? 'mosh' : (effectiveHost.protocol || 'ssh');
+    const resolvedAuth = resolveHostAuth({ host: effectiveHost, keys, identities });
+    const sessionId = connectToHost(effectiveHost);
     addConnectionLog({
       sessionId,
       hostId: host.id,
@@ -479,6 +500,25 @@ function App({ settings }: { settings: SettingsState }) {
   const _handleGlobalHotkeyKeyDown = useEffectEvent((e: KeyboardEvent) => {
     const isMac = hotkeyScheme === 'mac';
     const target = e.target as HTMLElement;
+    const isCloseTabHotkey = closeTabKeyStr ? matchesKeyBinding(e, closeTabKeyStr, isMac) : false;
+    const dialogHotkeyScope = target.closest?.('[data-hotkey-close-tab="true"]');
+
+    if (isCloseTabHotkey && dialogHotkeyScope) {
+      return;
+    }
+
+    if (isCloseTabHotkey) {
+      const openDialogs = Array.from(document.querySelectorAll<HTMLElement>('[role="dialog"][data-state="open"]'));
+      const topmostOpenDialog = openDialogs[openDialogs.length - 1] ?? null;
+      const topmostDialogClose = topmostOpenDialog?.querySelector<HTMLElement>('[data-dialog-close="true"]');
+      if (topmostDialogClose) {
+        e.preventDefault();
+        e.stopPropagation();
+        topmostDialogClose.click();
+        return;
+      }
+    }
+
     const isFormElement = target.tagName === 'INPUT' || target.tagName === 'TEXTAREA' || target.isContentEditable;
     const isMonacoElement =
       target instanceof HTMLElement &&
@@ -611,6 +651,7 @@ function App({ settings }: { settings: SettingsState }) {
     hosts,
     keys,
     identities,
+    groupConfigs,
   });
 
   // Sync tray menu data + handle tray actions
@@ -690,6 +731,7 @@ function App({ settings }: { settings: SettingsState }) {
       // Add to queue instead of replacing - supports multiple concurrent sessions
       setKeyboardInteractiveQueue(prev => [...prev, {
         requestId: request.requestId,
+        sessionId: request.sessionId,
         name: request.name,
         instructions: request.instructions,
         prompts: request.prompts,
@@ -704,14 +746,29 @@ function App({ settings }: { settings: SettingsState }) {
   }, []);
 
   // Handle keyboard-interactive submit
-  const handleKeyboardInteractiveSubmit = useCallback((requestId: string, responses: string[]) => {
+  const handleKeyboardInteractiveSubmit = useCallback((requestId: string, responses: string[], savePassword?: string) => {
     const bridge = netcattyBridge.get();
     if (bridge?.respondKeyboardInteractive) {
       void bridge.respondKeyboardInteractive(requestId, responses, false);
     }
+    // Save password to host if requested
+    if (savePassword) {
+      const request = keyboardInteractiveQueue.find(r => r.requestId === requestId);
+      if (request?.sessionId) {
+        const session = sessions.find(s => s.id === request.sessionId);
+        // Only save when the prompting hostname matches the session's host,
+        // to avoid overwriting the destination host's password with a jump host's password
+        if (session?.hostId && (!request.hostname || request.hostname === session.hostname)) {
+          const host = hosts.find(h => h.id === session.hostId);
+          if (host) {
+            updateHosts(hosts.map(h => h.id === host.id ? { ...h, password: savePassword } : h));
+          }
+        }
+      }
+    }
     // Remove from queue by requestId
     setKeyboardInteractiveQueue(prev => prev.filter(r => r.requestId !== requestId));
-  }, []);
+  }, [keyboardInteractiveQueue, sessions, hosts, updateHosts]);
 
   // Handle keyboard-interactive cancel
   const handleKeyboardInteractiveCancel = useCallback((requestId: string) => {
@@ -802,22 +859,37 @@ function App({ settings }: { settings: SettingsState }) {
   addConnectionLogRef.current = addConnectionLog;
 
   const createLocalTerminalWithCurrentShell = useCallback(() => {
+    const resolved = resolveShellSetting(terminalSettings.localShell, discoveredShells);
+    const matchedShell = discoveredShells.find(s => s.id === terminalSettings.localShell);
     return createLocalTerminal({
-      shellType: classifyLocalShellType(terminalSettings.localShell, navigator.userAgent),
+      shellType: classifyLocalShellType(resolved?.command || terminalSettings.localShell, navigator.userAgent),
+      shell: resolved?.command,
+      shellArgs: resolved?.args,
+      shellName: matchedShell?.name,
+      shellIcon: matchedShell?.icon,
     });
-  }, [createLocalTerminal, terminalSettings.localShell]);
+  }, [createLocalTerminal, terminalSettings.localShell, discoveredShells]);
 
   const splitSessionWithCurrentShell = useCallback((sessionId: string, direction: 'horizontal' | 'vertical') => {
+    const resolved = resolveShellSetting(terminalSettings.localShell, discoveredShells);
     return splitSession(sessionId, direction, {
-      localShellType: classifyLocalShellType(terminalSettings.localShell, navigator.userAgent),
+      localShellType: classifyLocalShellType(resolved?.command || terminalSettings.localShell, navigator.userAgent),
     });
-  }, [splitSession, terminalSettings.localShell]);
+  }, [splitSession, terminalSettings.localShell, discoveredShells]);
 
   const copySessionWithCurrentShell = useCallback((sessionId: string) => {
+    const resolved = resolveShellSetting(terminalSettings.localShell, discoveredShells);
     return copySession(sessionId, {
-      localShellType: classifyLocalShellType(terminalSettings.localShell, navigator.userAgent),
+      localShellType: classifyLocalShellType(resolved?.command || terminalSettings.localShell, navigator.userAgent),
     });
-  }, [copySession, terminalSettings.localShell]);
+  }, [copySession, terminalSettings.localShell, discoveredShells]);
+
+  const closeTabKeyStr = useMemo(() => {
+    if (hotkeyScheme === 'disabled') return null;
+    const closeTabBinding = keyBindings.find((binding) => binding.action === 'closeTab');
+    if (!closeTabBinding) return null;
+    return hotkeyScheme === 'mac' ? closeTabBinding.mac : closeTabBinding.pc;
+  }, [hotkeyScheme, keyBindings]);
 
   // Shared hotkey action handler - used by both global handler and terminal callback
   const executeHotkeyAction = useCallback((action: string, e: KeyboardEvent) => {
@@ -922,32 +994,32 @@ function App({ settings }: { settings: SettingsState }) {
         break;
       }
       case 'splitHorizontal': {
-        // Split current terminal horizontally (top/bottom)
         const currentId = activeTabStore.getActiveTabId();
-        // Check if it's a standalone session or we're in a workspace
         const activeSession = sessions.find(s => s.id === currentId);
         const activeWs = workspaces.find(w => w.id === currentId);
         if (activeSession && !activeSession.workspaceId) {
-          // Standalone session - split it
           splitSessionWithCurrentShell(activeSession.id, 'horizontal');
         } else if (activeWs) {
-          // In a workspace - need to determine focused session
-          // For now, we'll need the terminal to handle this via context menu
-          if (IS_DEV) console.log('[Hotkey] Split horizontal in workspace - use context menu on specific terminal');
+          const liveIds = collectSessionIds(activeWs.root);
+          const targetId = (activeWs.focusedSessionId && liveIds.includes(activeWs.focusedSessionId))
+            ? activeWs.focusedSessionId
+            : liveIds[0];
+          if (targetId) splitSessionWithCurrentShell(targetId, 'horizontal');
         }
         break;
       }
       case 'splitVertical': {
-        // Split current terminal vertically (left/right)
         const currentId = activeTabStore.getActiveTabId();
         const activeSession = sessions.find(s => s.id === currentId);
         const activeWs = workspaces.find(w => w.id === currentId);
         if (activeSession && !activeSession.workspaceId) {
-          // Standalone session - split it
           splitSessionWithCurrentShell(activeSession.id, 'vertical');
         } else if (activeWs) {
-          // In a workspace - need to determine focused session
-          if (IS_DEV) console.log('[Hotkey] Split vertical in workspace - use context menu on specific terminal');
+          const liveIds = collectSessionIds(activeWs.root);
+          const targetId = (activeWs.focusedSessionId && liveIds.includes(activeWs.focusedSessionId))
+            ? activeWs.focusedSessionId
+            : liveIds[0];
+          if (targetId) splitSessionWithCurrentShell(targetId, 'vertical');
         }
         break;
       }
@@ -1032,6 +1104,9 @@ function App({ settings }: { settings: SettingsState }) {
   }, [hosts, updateHosts, t]);
 
   // System info for connection logs
+  const hostsRef = useRef(hosts);
+  hostsRef.current = hosts;
+
   const systemInfoRef = useRef<{ username: string; hostname: string }>({
     username: 'user',
     hostname: 'localhost',
@@ -1053,13 +1128,24 @@ function App({ settings }: { settings: SettingsState }) {
   }, []);
 
   // Wrapper to create local terminal with logging
-  const handleCreateLocalTerminal = useCallback(() => {
+  const handleCreateLocalTerminal = useCallback((shell?: { command: string; args?: string[]; name?: string; icon?: string }) => {
     const { username, hostname } = systemInfoRef.current;
-    const sessionId = createLocalTerminalWithCurrentShell();
+    const resolved = shell ?? resolveShellSetting(terminalSettings.localShell, discoveredShells);
+    // Match by ID (not command) to avoid WSL distros all sharing wsl.exe
+    const matchedShell = !shell ? discoveredShells.find(s => s.id === terminalSettings.localShell) : undefined;
+    const shellName = shell?.name ?? matchedShell?.name;
+    const shellIcon = shell?.icon ?? matchedShell?.icon;
+    const sessionId = createLocalTerminal({
+      shellType: classifyLocalShellType(resolved?.command || terminalSettings.localShell, navigator.userAgent),
+      shell: resolved?.command,
+      shellArgs: resolved?.args,
+      shellName,
+      shellIcon,
+    });
     addConnectionLog({
       sessionId,
       hostId: '',
-      hostLabel: 'Local Terminal',
+      hostLabel: shellName || 'Local Terminal',
       hostname: 'localhost',
       username: username,
       protocol: 'local',
@@ -1068,16 +1154,24 @@ function App({ settings }: { settings: SettingsState }) {
       localHostname: hostname,
       saved: false,
     });
-  }, [addConnectionLog, createLocalTerminalWithCurrentShell]);
+  }, [addConnectionLog, createLocalTerminal, terminalSettings.localShell, discoveredShells]);
+
+  const resolveEffectiveHost = useCallback((host: Host): Host => {
+    if (!host.group) return host;
+    const groupDefaults = resolveGroupDefaults(host.group, groupConfigs);
+    return applyGroupDefaults(host, groupDefaults);
+  }, [groupConfigs]);
 
   // Wrapper to connect to host with logging
   const handleConnectToHost = useCallback((host: Host) => {
     const { username, hostname: localHost } = systemInfoRef.current;
 
+    const effectiveHost = resolveEffectiveHost(host);
+
     // Handle serial hosts separately
-    if (host.protocol === 'serial') {
+    if (effectiveHost.protocol === 'serial') {
       const portName = host.hostname.split('/').pop() || host.hostname;
-      const sessionId = connectToHost(host);
+      const sessionId = connectToHost(effectiveHost);
       addConnectionLog({
         sessionId,
         hostId: host.id,
@@ -1093,9 +1187,9 @@ function App({ settings }: { settings: SettingsState }) {
       return;
     }
 
-    const protocol = host.moshEnabled ? 'mosh' : (host.protocol || 'ssh');
-    const resolvedAuth = resolveHostAuth({ host, keys, identities });
-    const sessionId = connectToHost(host);
+    const protocol = effectiveHost.moshEnabled ? 'mosh' : (effectiveHost.protocol || 'ssh');
+    const resolvedAuth = resolveHostAuth({ host: effectiveHost, keys, identities });
+    const sessionId = connectToHost(effectiveHost);
     addConnectionLog({
       sessionId,
       hostId: host.id,
@@ -1108,7 +1202,18 @@ function App({ settings }: { settings: SettingsState }) {
       localHostname: localHost,
       saved: false,
     });
-  }, [addConnectionLog, connectToHost, identities, keys]);
+  }, [addConnectionLog, connectToHost, resolveEffectiveHost, identities, keys]);
+
+  // Wrap updateSessionStatus to track lastConnectedAt on successful connection
+  const handleSessionStatusChange = useCallback((sessionId: string, status: TerminalSession['status']) => {
+    updateSessionStatus(sessionId, status);
+    if (status === 'connected') {
+      const session = sessionByIdRef.current.get(sessionId);
+      if (session?.hostId) {
+        updateHostLastConnected(session.hostId);
+      }
+    }
+  }, [updateSessionStatus, updateHostLastConnected]);
 
   // Wrapper to create serial session with logging
   const handleConnectSerial = useCallback((config: SerialConfig, options?: { charset?: string }) => {
@@ -1162,24 +1267,25 @@ function App({ settings }: { settings: SettingsState }) {
     }
   }, [sessions, connectionLogs, updateConnectionLog]);
 
-  // Check if host has multiple protocols enabled
+  // Check if host has multiple protocols enabled (using effective/resolved host)
   const hasMultipleProtocols = useCallback((host: Host) => {
+    const effective = resolveEffectiveHost(host);
     let count = 0;
     // SSH is always available as base protocol (unless explicitly set to something else)
-    if (host.protocol === 'ssh' || !host.protocol) count++;
+    if (effective.protocol === 'ssh' || !effective.protocol) count++;
     // Mosh adds another option
-    if (host.moshEnabled) count++;
+    if (effective.moshEnabled) count++;
     // Telnet adds another option
-    if (host.telnetEnabled) count++;
+    if (effective.telnetEnabled) count++;
     // If protocol is explicitly telnet (not ssh), count it
-    if (host.protocol === 'telnet' && !host.telnetEnabled) count++;
+    if (effective.protocol === 'telnet' && !effective.telnetEnabled) count++;
     return count > 1;
-  }, []);
+  }, [resolveEffectiveHost]);
 
   // Handle host connect with protocol selection (used by QuickSwitcher)
   const handleHostConnectWithProtocolCheck = useCallback((host: Host) => {
     if (hasMultipleProtocols(host)) {
-      setProtocolSelectHost(host);
+      setProtocolSelectHost(resolveEffectiveHost(host));
       setIsQuickSwitcherOpen(false);
       setQuickSearch('');
     } else {
@@ -1187,7 +1293,7 @@ function App({ settings }: { settings: SettingsState }) {
       setIsQuickSwitcherOpen(false);
       setQuickSearch('');
     }
-  }, [hasMultipleProtocols, handleConnectToHost]);
+  }, [hasMultipleProtocols, handleConnectToHost, resolveEffectiveHost]);
 
   // Handle protocol selection from dialog
   const handleProtocolSelect = useCallback((protocol: HostProtocol, port: number) => {
@@ -1204,10 +1310,24 @@ function App({ settings }: { settings: SettingsState }) {
   }, [protocolSelectHost, handleConnectToHost]);
 
   const handleToggleTheme = useCallback(() => {
-    // Toggle based on the actual rendered theme so clicking always produces a visible change,
-    // even when the stored preference is 'system'.
+    if (theme === 'system') {
+      toast.info(
+        t('topTabs.toggleTheme.systemExitMessage'),
+        {
+          title: t('topTabs.toggleTheme.systemExitTitle'),
+          actionLabel: t('topTabs.toggleTheme.openSettings'),
+          onClick: () => {
+            void (async () => {
+              const opened = await openSettingsWindow();
+              if (!opened) toast.error(t('toast.settingsUnavailable'), t('common.settings'));
+            })();
+          },
+        }
+      );
+      return;
+    }
     setTheme(resolvedTheme === 'dark' ? 'light' : 'dark');
-  }, [resolvedTheme, setTheme]);
+  }, [openSettingsWindow, resolvedTheme, setTheme, t, theme]);
 
   const handleOpenQuickSwitcher = useCallback(() => {
     setIsQuickSwitcherOpen(true);
@@ -1278,9 +1398,10 @@ function App({ settings }: { settings: SettingsState }) {
   }, []);
 
   return (
-    <div className={cn("flex flex-col h-screen text-foreground font-sans netcatty-shell", immersiveMode && activeTerminalTheme && "immersive-transition")} onContextMenu={handleRootContextMenu}>
+    <div className={cn("flex flex-col h-screen text-foreground font-sans netcatty-shell", activeTerminalTheme && "immersive-transition")} onContextMenu={handleRootContextMenu}>
       <TopTabs
         theme={resolvedTheme}
+        followAppTerminalTheme={followAppTerminalTheme}
         hosts={hosts}
         sessions={sessions}
         orphanSessions={orphanSessions}
@@ -1299,7 +1420,7 @@ function App({ settings }: { settings: SettingsState }) {
         onToggleTheme={handleToggleTheme}
         onOpenSettings={handleOpenSettings}
         onSyncNow={handleSyncNowManual}
-        isImmersiveActive={immersiveMode && activeTerminalTheme !== null}
+        isImmersiveActive={activeTerminalTheme !== null}
         onStartSessionDrag={setDraggingSessionId}
         onEndSessionDrag={handleEndSessionDrag}
         onReorderTabs={reorderTabs}
@@ -1329,6 +1450,8 @@ function App({ settings }: { settings: SettingsState }) {
             onConnectSerial={handleConnectSerial}
             onDeleteHost={handleDeleteHost}
             onConnect={handleConnectToHost}
+            groupConfigs={groupConfigs}
+            onUpdateGroupConfigs={updateGroupConfigs}
             onUpdateHosts={updateHosts}
             onUpdateKeys={updateKeys}
             onUpdateIdentities={updateIdentities}
@@ -1355,6 +1478,7 @@ function App({ settings }: { settings: SettingsState }) {
           hosts={hosts}
           keys={keys}
           identities={identities}
+          groupConfigs={groupConfigs}
           updateHosts={updateHosts}
           sftpDefaultViewMode={sftpDefaultViewMode}
           sftpDoubleClickBehavior={sftpDoubleClickBehavior}
@@ -1369,6 +1493,7 @@ function App({ settings }: { settings: SettingsState }) {
 
         <TerminalLayerMount
           hosts={hosts}
+          groupConfigs={groupConfigs}
           keys={keys}
           identities={identities}
           snippets={snippets}
@@ -1378,6 +1503,7 @@ function App({ settings }: { settings: SettingsState }) {
           knownHosts={knownHosts}
           draggingSessionId={draggingSessionId}
           terminalTheme={currentTerminalTheme}
+          followAppTerminalTheme={followAppTerminalTheme}
           terminalSettings={terminalSettings}
           terminalFontFamilyId={terminalFontFamilyId}
           fontSize={terminalFontSize}
@@ -1387,8 +1513,9 @@ function App({ settings }: { settings: SettingsState }) {
           onUpdateTerminalThemeId={setTerminalThemeId}
           onUpdateTerminalFontFamilyId={setTerminalFontFamilyId}
           onUpdateTerminalFontSize={setTerminalFontSize}
+          onUpdateTerminalFontWeight={(w) => updateTerminalSetting('fontWeight', w)}
           onCloseSession={closeSession}
-          onUpdateSessionStatus={updateSessionStatus}
+          onUpdateSessionStatus={handleSessionStatusChange}
           onUpdateHostDistro={updateHostDistro}
           onUpdateHost={(host) => updateHosts(hosts.map(h => h.id === host.id ? host : h))}
           onAddKnownHost={(kh) => updateKnownHosts([...knownHosts, kh])}
@@ -1436,6 +1563,17 @@ function App({ settings }: { settings: SettingsState }) {
         })}
       </div>
 
+      {/* Global "quick add snippet" dialog, triggered by the
+          netcatty:snippets:add window event (from ScriptsSidePanel "+"). */}
+      <QuickAddSnippetDialog
+        snippets={snippets}
+        packages={snippetPackages}
+        onCreateSnippet={(snippet) => updateSnippets([...snippets, snippet])}
+        onCreatePackage={(pkg) =>
+          updateSnippetPackages(Array.from(new Set([...snippetPackages, pkg])))
+        }
+      />
+
       {isQuickSwitcherOpen && (
         <Suspense fallback={null}>
           <LazyQuickSwitcher
@@ -1451,8 +1589,8 @@ function App({ settings }: { settings: SettingsState }) {
               setIsQuickSwitcherOpen(false);
               setQuickSearch('');
             }}
-            onCreateLocalTerminal={() => {
-              handleCreateLocalTerminal();
+            onCreateLocalTerminal={(shell) => {
+              handleCreateLocalTerminal(shell);
               setIsQuickSwitcherOpen(false);
               setQuickSearch('');
             }}
@@ -1565,6 +1703,59 @@ function App({ settings }: { settings: SettingsState }) {
         onCancel={handlePassphraseCancel}
         onSkip={handlePassphraseSkip}
       />
+
+      {/* Empty vault vs cloud data confirmation dialog (#679).
+          This dialog intentionally cannot be dismissed — the user MUST
+          choose "Restore" or "Keep Empty" before the sync flow can
+          proceed. hideCloseButton removes the X button, onOpenChange
+          is a no-op so ESC also does nothing, and onInteractOutside
+          prevents click-away. */}
+      <Dialog open={!!emptyVaultConflict} onOpenChange={() => { /* intentionally non-dismissable */ }}>
+        <DialogContent className="max-w-md" hideCloseButton onInteractOutside={(e) => e.preventDefault()} onEscapeKeyDown={(e) => e.preventDefault()}>
+          <DialogHeader>
+            <DialogTitle className="flex items-center gap-2">
+              <AlertTriangle className="w-5 h-5 text-amber-500" />
+              {t('sync.autoSync.emptyVaultConflict.title')}
+            </DialogTitle>
+            <DialogDescription>
+              {t('sync.autoSync.emptyVaultConflict.description')}
+            </DialogDescription>
+          </DialogHeader>
+          {emptyVaultConflict && (
+            <div className="bg-muted/30 rounded-lg p-3 text-sm">
+              <div className="font-medium text-muted-foreground mb-1">{t('sync.autoSync.emptyVaultConflict.cloudLabel')}</div>
+              <div>{t('sync.autoSync.emptyVaultConflict.cloudSummary', {
+                hosts: emptyVaultConflict.hostCount,
+                keys: emptyVaultConflict.keyCount,
+                snippets: emptyVaultConflict.snippetCount,
+              })}</div>
+            </div>
+          )}
+          <DialogFooter className="flex-col gap-2 sm:flex-col">
+            <Button
+              onClick={() => resolveEmptyVaultConflict('restore')}
+              className="w-full justify-start gap-2"
+            >
+              <Download className="w-4 h-4" />
+              <span>
+                {t('sync.autoSync.emptyVaultConflict.restore')}
+                <span className="text-xs opacity-70 ml-1">— {t('sync.autoSync.emptyVaultConflict.restoreDesc')}</span>
+              </span>
+            </Button>
+            <Button
+              variant="outline"
+              onClick={() => resolveEmptyVaultConflict('keep-empty')}
+              className="w-full justify-start gap-2"
+            >
+              <Trash2 className="w-4 h-4" />
+              <span>
+                {t('sync.autoSync.emptyVaultConflict.keepEmpty')}
+                <span className="text-xs opacity-70 ml-1">— {t('sync.autoSync.emptyVaultConflict.keepEmptyDesc')}</span>
+              </span>
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
     </div>
   );
 }

application/i18n/locales/en.ts

@@ -21,6 +21,7 @@ const en: Messages = {
   'common.clear': 'Clear',
   'common.optional': 'Optional',
   'common.selectPlaceholder': 'Select...',
+  'common.add': 'Add',
   'common.rename': 'Rename',
   'common.refresh': 'Refresh',
   'common.continue': 'Continue',
@@ -196,6 +197,11 @@ const en: Messages = {
   'settings.application.github.subtitle': 'Source code',
   'settings.application.whatsNew': "What's new",
   'settings.application.whatsNew.subtitle': 'Show release notes',
+  'settings.application.openExternal.failedTitle': 'Cannot open link',
+  'settings.application.openExternal.failedBody': 'The link could not be opened in either the system browser or the built-in browser window.',
+  'settings.vault.title': 'Vault',
+  'settings.vault.showRecentHosts': 'Show recently connected hosts',
+  'settings.vault.showRecentHostsDesc': 'Display a section of recently connected hosts at the top of the vault',
 
   // Update notifications
   'update.available.title': 'Update Available',
@@ -231,14 +237,11 @@ const en: Messages = {
   'settings.appearance.themeColor.desc': 'Pick a preset palette for each theme',
   'settings.appearance.themeColor.light': 'Light palette',
   'settings.appearance.themeColor.dark': 'Dark palette',
-  'settings.appearance.immersiveMode': 'Immersive Mode',
-  'settings.appearance.immersiveMode.desc':
-    'When enabled, the UI chrome (tab bar, sidebar, status bar) adapts its colors to match the active terminal theme for a visually cohesive experience.',
   'settings.appearance.customCss': 'Custom CSS',
   'settings.appearance.customCss.desc':
-    'Add custom CSS to personalize the app appearance. Changes apply immediately.',
+    'Add custom CSS to personalize the app appearance. Changes apply immediately. Major UI regions expose a [data-section="..."] attribute you can target — e.g. snippets-panel, host-details-panel, group-details-panel, serial-host-details-panel, ai-chat-panel, vault-sidebar, vault-main, vault-hosts-header, vault-host-list, vault-view, terminal-workspace, terminal-workspace-sidebar, top-tabs.',
   'settings.appearance.customCss.placeholder':
-    '/* Example: */\n.terminal { background: #1a1a2e !important; }\n:root { --radius: 0.25rem; }',
+    '/* Examples — use !important to beat Tailwind utility specificity */\n\n/* Make snippet sidebar text larger */\n[data-section="snippets-panel"] {\n  font-size: 14px !important;\n}\n\n/* Custom terminal background */\n.terminal { background: #1a1a2e !important; }\n\n/* Tweak global border radius */\n:root { --radius: 0.25rem; }',
   'settings.appearance.language': 'Language',
   'settings.appearance.language.desc': 'Choose the UI language',
   'settings.appearance.uiFont': 'Interface Font',
@@ -250,6 +253,8 @@ const en: Messages = {
   'settings.terminal.themeModal.darkThemes': 'Dark Themes',
   'settings.terminal.themeModal.lightThemes': 'Light Themes',
   '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.section.font': 'Font',
   'settings.terminal.section.cursor': 'Cursor',
   'settings.terminal.section.keyboard': 'Keyboard',
@@ -327,6 +332,14 @@ const en: Messages = {
   'settings.terminal.scrollback.rows': 'Number of rows *',
   'settings.terminal.keywordHighlight.title': 'Keyword highlighting',
   'settings.terminal.keywordHighlight.resetColors': 'Reset to default colors',
+  'settings.terminal.keywordHighlight.addCustom': 'Add Custom Rule',
+  'settings.terminal.keywordHighlight.editCustom': 'Edit Rule',
+  'settings.terminal.keywordHighlight.labelField': 'Label & Color',
+  'settings.terminal.keywordHighlight.labelPlaceholder': 'Label (e.g., Down)',
+  'settings.terminal.keywordHighlight.patternField': 'Regex Pattern',
+  'settings.terminal.keywordHighlight.patternPlaceholder': 'Regex (e.g., \\bdown\\b)',
+  'settings.terminal.keywordHighlight.invalidPattern': 'Invalid regex pattern',
+  'settings.terminal.keywordHighlight.preview': 'Preview',
   'settings.terminal.section.localShell': 'Local Shell',
   'settings.terminal.localShell.shell': 'Shell executable',
   'settings.terminal.localShell.shell.desc': 'Path to the shell executable (e.g., /bin/zsh, pwsh.exe). Leave empty for system default.',
@@ -334,6 +347,11 @@ const en: Messages = {
   'settings.terminal.localShell.shell.detected': 'Detected',
   'settings.terminal.localShell.shell.notFound': 'Shell executable not found',
   'settings.terminal.localShell.shell.isDirectory': 'Path is a directory, not an executable',
+  'settings.terminal.localShell.shell.default': 'System Default',
+  'settings.terminal.localShell.shell.custom': 'Custom...',
+  'settings.terminal.localShell.shell.customPath': 'Shell executable path',
+  'settings.terminal.localShell.shell.commonPaths': 'Common paths',
+  'settings.terminal.localShell.shell.pathValid': 'Path valid',
   'settings.terminal.localShell.startDir': 'Starting directory',
   'settings.terminal.localShell.startDir.desc': 'Directory to start in when opening a local terminal. Leave empty for home directory.',
   'settings.terminal.localShell.startDir.placeholder': 'Home directory',
@@ -352,7 +370,7 @@ const en: Messages = {
   // Settings > Terminal > Rendering
   'settings.terminal.section.rendering': 'Rendering',
   'settings.terminal.rendering.renderer': 'Renderer',
-  'settings.terminal.rendering.renderer.desc': 'Choose the terminal rendering technology. Auto will use Canvas on low-memory devices. Changes take effect on new terminal sessions.',
+  'settings.terminal.rendering.renderer.desc': 'Choose the terminal rendering technology. Auto will use DOM on low-memory devices. Changes take effect on new terminal sessions.',
   'settings.terminal.rendering.auto': 'Auto',
 
   // Settings > Terminal > Workspace Focus Indicator
@@ -428,6 +446,18 @@ const en: Messages = {
   'sync.autoSync.vaultLocked': 'Vault is locked. Open Settings → Sync & Cloud to unlock.',
   'sync.autoSync.conflictDetected': 'Sync conflict detected. Open Settings → Sync & Cloud to resolve.',
   'sync.autoSync.syncFailed': 'Sync failed',
+  'sync.autoSync.restoredTitle': 'Vault restored',
+  'sync.autoSync.restoredMessage': 'Your vault has been restored from the cloud.',
+  'sync.autoSync.keptLocalTitle': 'Kept local vault',
+  'sync.autoSync.keptLocalMessage': 'Your empty local vault was kept. Cloud data was not applied.',
+  'sync.autoSync.emptyVaultConflict.title': 'Empty Vault Detected',
+  'sync.autoSync.emptyVaultConflict.description': 'Your local vault is empty, but the cloud has data. This usually happens after an update or storage reset. What would you like to do?',
+  'sync.autoSync.emptyVaultConflict.cloudLabel': 'Cloud',
+  'sync.autoSync.emptyVaultConflict.restore': 'Restore from Cloud',
+  'sync.autoSync.emptyVaultConflict.restoreDesc': 'Recommended — recover your hosts, keys, and snippets from the cloud backup',
+  'sync.autoSync.emptyVaultConflict.keepEmpty': 'Keep Empty',
+  'sync.autoSync.emptyVaultConflict.keepEmptyDesc': 'Start fresh with an empty vault',
+  'sync.autoSync.emptyVaultConflict.cloudSummary': '{hosts} hosts, {keys} keys, {snippets} snippets',
   'sync.credentialsUnavailable': 'This device cannot decrypt some saved credentials. Re-enter credentials locally before syncing.',
   'time.never': 'Never',
   'time.justNow': 'Just now',
@@ -461,8 +491,24 @@ const en: Messages = {
   'vault.groups.placeholder.example': 'e.g. Production',
   'vault.groups.parentLabel': 'Parent',
   'vault.groups.pathLabel': 'Path',
+  'vault.groups.settings': 'Group Settings',
+  'vault.groups.details': 'Group Details',
+  'vault.groups.details.general': 'General',
+  'vault.groups.details.ssh': 'SSH',
+  'vault.groups.details.telnet': 'Telnet',
+  'vault.groups.details.advanced': 'Advanced',
+  'vault.groups.details.appearance': 'Appearance',
+  'vault.groups.details.mosh': 'Mosh',
+  'vault.groups.details.parentGroup': 'Parent Group',
+  'vault.groups.details.none': 'None',
+  'vault.groups.details.inherited': 'Inherited from group',
+  'vault.groups.details.addProtocol': 'Add Protocol',
+  'vault.groups.details.removeProtocol': 'Remove Protocol',
+  'vault.groups.details.fontFamily': 'Font Family',
+  'vault.groups.details.fontSize': 'Font Size',
   'vault.groups.errors.required': 'Group name is required.',
   'vault.groups.errors.invalidChars': "Group name cannot include '/' or '\\\\'.",
+  'vault.groups.errors.duplicatePath': 'A group with this name already exists at this location.',
 
   'vault.managedSource.unmanage': 'Unmanage',
   'vault.managedSource.unmanageSuccess': 'Successfully unmanaged group',
@@ -486,6 +532,10 @@ const en: Messages = {
   'vault.hosts.export.toast.successWithSkipped': 'Exported {count} hosts to CSV ({skipped} unsupported hosts skipped)',
   'vault.hosts.export.toast.noHosts': 'No hosts to export',
   'vault.hosts.allHosts': 'All hosts',
+  'vault.hosts.pinned': 'Pinned',
+  'vault.hosts.recentlyConnected': 'Recently Connected',
+  'vault.hosts.pinToTop': 'Pin to Top',
+  'vault.hosts.unpin': 'Unpin',
   'vault.hosts.copyCredentials': 'Copy Credentials',
   'vault.hosts.copyCredentials.toast.success': 'Credentials copied to clipboard',
   'vault.hosts.copyCredentials.toast.noPassword': 'No password saved for this host',
@@ -495,6 +545,7 @@ const en: Messages = {
   'vault.hosts.deselectAll': 'Deselect All',
   'vault.hosts.deleteSelected': 'Delete ({count})',
   'vault.hosts.deleteMultiple.success': 'Deleted {count} hosts',
+  'vault.hosts.moveToGroup.success': 'Moved {host} to {group}',
   'vault.hosts.empty.title': 'Set up your hosts',
   'vault.hosts.empty.desc': 'Save hosts to quickly connect to your servers, VMs, and containers.',
 
@@ -699,6 +750,9 @@ const en: Messages = {
   'sftp.deleteConfirm.single': 'Delete "{name}"?',
   'sftp.deleteConfirm.title': 'Delete {count} item(s)?',
   'sftp.deleteConfirm.desc': 'This action cannot be undone. The following will be deleted:',
+  'sftp.deleteConfirm.descSingle': 'This action cannot be undone.',
+  'sftp.deleteConfirm.host': 'Host',
+  'sftp.deleteConfirm.path': 'Path',
   'sftp.error.loadFailed': 'Failed to load directory',
   'sftp.error.downloadFailed': 'Download failed',
   'sftp.error.uploadFailed': 'Upload failed',
@@ -879,6 +933,8 @@ const en: Messages = {
   'qs.search.placeholder': 'Search hosts or tabs',
   'qs.jumpTo': 'Jump To',
   'qs.localTerminal': 'Local Terminal',
+  'qs.localShells': 'Local Shells',
+  'qs.default': 'Default',
 
   // Select Host panel
   'selectHost.title': 'Select Host',
@@ -944,6 +1000,14 @@ const en: Messages = {
   'hostDetails.distro.option.almalinux': 'AlmaLinux',
   'hostDetails.distro.option.oracle': 'Oracle Linux',
   'hostDetails.distro.option.kali': 'Kali Linux',
+  'hostDetails.distro.option.cisco': 'Cisco',
+  'hostDetails.distro.option.juniper': 'Juniper Networks',
+  'hostDetails.distro.option.huawei': 'Huawei',
+  'hostDetails.distro.option.hpe': 'HPE / H3C',
+  'hostDetails.distro.option.mikrotik': 'MikroTik',
+  'hostDetails.distro.option.fortinet': 'Fortinet',
+  'hostDetails.distro.option.paloalto': 'Palo Alto Networks',
+  'hostDetails.distro.option.zyxel': 'ZyXEL',
   'hostDetails.section.mosh': 'Mosh',
   'hostDetails.username.placeholder': 'Username',
   'hostDetails.password.placeholder': 'Password',
@@ -976,6 +1040,8 @@ const en: Messages = {
   'hostDetails.legacyAlgorithms': 'Allow Legacy Algorithms',
   'hostDetails.legacyAlgorithms.desc': 'Enable deprecated SSH algorithms (diffie-hellman-group1, ssh-dss, 3des-cbc, etc.) for connecting to older network equipment.',
   'hostDetails.legacyAlgorithms.warning': 'These algorithms have known security weaknesses. Only enable for legacy devices that do not support modern cryptography.',
+  'hostDetails.backspaceBehavior': 'Backspace Behavior',
+  'hostDetails.backspaceBehavior.default': 'Default',
   'hostDetails.jumpHosts': 'Proxy via Hosts',
   'hostDetails.jumpHosts.hops': '{count} hop(s)',
   'hostDetails.jumpHosts.direct': 'Direct',
@@ -1183,8 +1249,14 @@ const en: Messages = {
   'terminal.themeModal.globalTheme': 'Global Theme',
   'terminal.themeModal.globalFont': 'Global Font',
   'terminal.themeModal.fontSize': 'Font Size',
+  'terminal.themeModal.fontWeight': 'Font Weight',
   'terminal.themeModal.livePreview': 'Live Preview',
   'terminal.themeModal.themeType': '{type} theme',
+  'terminal.hiddenTheme.title': 'Current hidden theme',
+  'terminal.hiddenTheme.desc': 'This theme is hidden from manual picks and will be replaced when you choose another theme.',
+  'topTabs.toggleTheme.systemExitTitle': 'System theme is active',
+  'topTabs.toggleTheme.systemExitMessage': 'Open Settings to choose a fixed Light or Dark theme.',
+  'topTabs.toggleTheme.openSettings': 'Open Settings',
 
   // Custom Themes
   'terminal.customTheme.section': 'Custom Themes',
@@ -1314,6 +1386,22 @@ const en: Messages = {
   'cloudSync.history.download': 'Download',
   'cloudSync.history.resolved': 'Resolved',
   'cloudSync.history.error': 'Error',
+  'cloudSync.revisionHistory.viewButton': 'History',
+  'cloudSync.revisionHistory.title': 'Vault Version History',
+  'cloudSync.revisionHistory.description': 'Browse and restore previous versions of your vault from the Gist revision history.',
+  'cloudSync.revisionHistory.empty': 'No revisions found.',
+  'cloudSync.revisionHistory.current': 'Current',
+  'cloudSync.revisionHistory.revision': 'Revision',
+  'cloudSync.revisionHistory.revisionPreview': 'Revision Contents',
+  'cloudSync.revisionHistory.device': 'Device',
+  'cloudSync.revisionHistory.hosts': 'Hosts',
+  'cloudSync.revisionHistory.keys': 'Keys',
+  'cloudSync.revisionHistory.snippets': 'Snippets',
+  'cloudSync.revisionHistory.identities': 'Identities',
+  'cloudSync.revisionHistory.restoreButton': 'Restore This Version',
+  'cloudSync.revisionHistory.restored': 'Vault restored from selected revision.',
+  'cloudSync.revisionHistory.revisionNotFound': 'Revision not found or does not contain vault data.',
+  'cloudSync.revisionHistory.decryptFailed': 'Cannot decrypt this revision. It may have been encrypted with a different master password.',
   'cloudSync.changeKey.title': 'Change Master Key',
   'cloudSync.changeKey.current': 'Current Master Key',
   'cloudSync.changeKey.new': 'New Master Key',
@@ -1601,10 +1689,7 @@ const en: Messages = {
   'keyboard.interactive.enterResponse': 'Enter response',
   'keyboard.interactive.submit': 'Submit',
   'keyboard.interactive.verifying': 'Verifying...',
-  'keyboard.interactive.fill': 'Fill',
-  'keyboard.interactive.fillSaved': 'Fill with saved password',
-  'keyboard.interactive.useSaved': 'Use saved',
-  'keyboard.interactive.useSavedPassword': 'Use saved password',
+  'keyboard.interactive.savePassword': 'Save password',
 
   // Passphrase Modal for encrypted SSH keys
   'passphrase.title': 'SSH Key Passphrase',
@@ -1684,10 +1769,26 @@ const en: Messages = {
   'ai.claude.customPathPlaceholder': 'e.g. /usr/local/bin/claude',
   'ai.claude.check': 'Check',
 
+  // AI GitHub Copilot CLI
+  'ai.copilot.title': 'GitHub Copilot CLI',
+  'ai.copilot.description': 'Uses GitHub Copilot CLI via ACP over stdio (`copilot --acp --stdio`). Once detected, it can be selected as an external coding agent.',
+  'ai.copilot.detecting': 'Detecting...',
+  'ai.copilot.detected': 'Detected',
+  'ai.copilot.notFound': 'Not found',
+  'ai.copilot.path': 'Path:',
+  'ai.copilot.notFoundHint': 'Could not find copilot in PATH. Install it or specify the executable path below.',
+  'ai.copilot.customPathPlaceholder': 'e.g. /usr/local/bin/copilot',
+  'ai.copilot.check': 'Check',
+
   // AI Default Agent
   'ai.defaultAgent': 'Default Agent',
   'ai.defaultAgent.description': 'Agent to use when starting a new AI session',
   'ai.defaultAgent.catty': 'Catty (Built-in)',
+  'ai.toolAccess.title': 'Tool Access',
+  'ai.toolAccess.mode': 'Netcatty Access Mode',
+  'ai.toolAccess.description': 'Choose how external ACP agents access Netcatty sessions. MCP exposes the built-in server, while Skills + CLI points agents to the local Netcatty skill and CLI commands.',
+  'ai.toolAccess.mode.mcp': 'MCP',
+  'ai.toolAccess.mode.skills': 'Skills + CLI',
 
   // AI Chat
   'ai.chat.noProvider': 'No AI provider is configured. Go to **Settings → AI → Providers** to add and enable a provider.',
@@ -1764,7 +1865,7 @@ const en: Messages = {
   // AI Safety Settings
   'ai.safety.title': 'Safety',
   'ai.safety.permissionMode': 'Permission Mode',
-  'ai.safety.permissionMode.description': 'Controls how the AI interacts with your terminals. Observer mode blocks all write operations via MCP Server, enforced for both built-in and ACP agents. Confirm mode is advisory for ACP agents (they control their own tool approval flow).',
+  'ai.safety.permissionMode.description': 'Controls how the AI interacts with your terminals. Observer mode blocks all write operations through Netcatty, enforced for both built-in and ACP agents. Confirm mode is advisory for ACP agents (they control their own tool approval flow).',
   'ai.safety.permissionMode.observer': 'Observer - Read only, no actions',
   'ai.safety.permissionMode.confirm': 'Confirm - Ask before actions',
   'ai.safety.permissionMode.autonomous': 'Autonomous - Execute freely',
@@ -1774,7 +1875,7 @@ const en: Messages = {
   'ai.safety.maxIterations': 'Max Iterations',
   'ai.safety.maxIterations.description': 'Maximum number of AI tool-use loops to prevent runaway execution. ACP agents may have their own internal iteration limits that take precedence.',
   'ai.safety.blocklist': 'Command Blocklist',
-  'ai.safety.blocklist.description': 'Regex patterns to block dangerous commands. Applies to both built-in and ACP agents via MCP Server.',
+  'ai.safety.blocklist.description': 'Regex patterns to block dangerous commands. Applies to both built-in and ACP agents through Netcatty execution.',
   'ai.safety.blocklist.placeholder': 'Regex pattern...',
   'ai.safety.blocklist.reset': 'Reset to defaults',
   'ai.safety.blocklist.add': 'Add pattern',

application/i18n/locales/zh-CN.ts

@@ -13,6 +13,7 @@ const zhCN: Messages = {
   'common.connect': '连接',
   'common.terminal': '终端',
   'common.create': '创建',
+  'common.add': '添加',
   'common.rename': '重命名',
   'common.refresh': '刷新',
   'common.continue': '继续',
@@ -180,6 +181,11 @@ const zhCN: Messages = {
   'settings.application.github.subtitle': '源代码',
   'settings.application.whatsNew': '更新内容',
   'settings.application.whatsNew.subtitle': '查看发布说明',
+  'settings.application.openExternal.failedTitle': '无法打开链接',
+  'settings.application.openExternal.failedBody': '系统浏览器和内置浏览器窗口都无法打开该链接。',
+  'settings.vault.title': '主机库',
+  'settings.vault.showRecentHosts': '显示最近连接的主机',
+  'settings.vault.showRecentHostsDesc': '在主机列表顶部显示最近连接过的主机',
 
   // Update notifications
   'update.available.title': '发现新版本',
@@ -215,13 +221,11 @@ const zhCN: Messages = {
   'settings.appearance.themeColor.desc': '为浅色与深色主题选择预设配色',
   'settings.appearance.themeColor.light': '浅色主题',
   'settings.appearance.themeColor.dark': '深色主题',
-  'settings.appearance.immersiveMode': '沉浸模式',
-  'settings.appearance.immersiveMode.desc':
-    '启用后，UI 外观（标签栏、侧边栏、状态栏）会自动适配当前终端主题的配色，营造视觉一体化的沉浸体验。',
   'settings.appearance.customCss': '自定义 CSS',
-  'settings.appearance.customCss.desc': '使用自定义 CSS 个性化界面，修改会立即生效。',
+  'settings.appearance.customCss.desc':
+    '使用自定义 CSS 个性化界面，修改会立即生效。主要 UI 区块都暴露了 [data-section="..."] 属性供你定位，比如：snippets-panel、host-details-panel、group-details-panel、serial-host-details-panel、ai-chat-panel、vault-sidebar、vault-main、vault-hosts-header、vault-host-list、vault-view、terminal-workspace、terminal-workspace-sidebar、top-tabs。',
   'settings.appearance.customCss.placeholder':
-    '/* 示例：*/\n.terminal { background: #1a1a2e !important; }\n:root { --radius: 0.25rem; }',
+    '/* 示例 — 由于 Tailwind 优先级较高，需要使用 !important */\n\n/* 放大代码片段侧边栏字号 */\n[data-section="snippets-panel"] {\n  font-size: 14px !important;\n}\n\n/* 自定义终端背景色 */\n.terminal { background: #1a1a2e !important; }\n\n/* 调整全局圆角 */\n:root { --radius: 0.25rem; }',
   'settings.appearance.language': '语言',
   'settings.appearance.language.desc': '选择界面语言',
   'settings.appearance.uiFont': '界面字体',
@@ -261,6 +265,18 @@ const zhCN: Messages = {
   'sync.autoSync.vaultLocked': 'Vault 处于锁定状态。请打开 设置 → Sync & Cloud 解锁。',
   'sync.autoSync.conflictDetected': '检测到同步冲突。请打开 设置 → Sync & Cloud 处理。',
   'sync.autoSync.syncFailed': '同步失败',
+  'sync.autoSync.restoredTitle': '已恢复',
+  'sync.autoSync.restoredMessage': '已从云端恢复主机库数据。',
+  'sync.autoSync.keptLocalTitle': '已保留本地数据',
+  'sync.autoSync.keptLocalMessage': '保留了空的本地主机库，未应用云端数据。',
+  'sync.autoSync.emptyVaultConflict.title': '检测到空主机库',
+  'sync.autoSync.emptyVaultConflict.description': '本地主机库为空，但云端有数据。这通常发生在应用更新或存储重置之后。请选择如何处理：',
+  'sync.autoSync.emptyVaultConflict.cloudLabel': '云端',
+  'sync.autoSync.emptyVaultConflict.restore': '从云端恢复',
+  'sync.autoSync.emptyVaultConflict.restoreDesc': '推荐 — 从云端备份恢复主机、密钥和代码片段',
+  'sync.autoSync.emptyVaultConflict.keepEmpty': '保持为空',
+  'sync.autoSync.emptyVaultConflict.keepEmptyDesc': '从头开始，使用空的主机库',
+  'sync.autoSync.emptyVaultConflict.cloudSummary': '{hosts} 台主机，{keys} 个密钥，{snippets} 个代码片段',
   'sync.credentialsUnavailable': '当前设备无法解密部分已保存凭据。请先在本地重新输入凭据后再同步。',
   'time.never': '从未',
   'time.justNow': '刚刚',
@@ -294,8 +310,24 @@ const zhCN: Messages = {
   'vault.groups.placeholder.example': '例如：Production',
   'vault.groups.parentLabel': '父级',
   'vault.groups.pathLabel': '路径',
+  'vault.groups.settings': '分组设置',
+  'vault.groups.details': '分组详情',
+  'vault.groups.details.general': '常规',
+  'vault.groups.details.ssh': 'SSH',
+  'vault.groups.details.telnet': 'Telnet',
+  'vault.groups.details.advanced': '高级',
+  'vault.groups.details.appearance': '外观',
+  'vault.groups.details.mosh': 'Mosh',
+  'vault.groups.details.parentGroup': '父分组',
+  'vault.groups.details.none': '无',
+  'vault.groups.details.inherited': '继承自分组',
+  'vault.groups.details.addProtocol': '添加协议',
+  'vault.groups.details.removeProtocol': '移除协议',
+  'vault.groups.details.fontFamily': '字体',
+  'vault.groups.details.fontSize': '字号',
   'vault.groups.errors.required': '分组名称不能为空。',
   'vault.groups.errors.invalidChars': "分组名称不能包含 '/' 或 '\\\\'.",
+  'vault.groups.errors.duplicatePath': '该位置已存在同名分组。',
 
   'vault.managedSource.unmanage': '取消托管',
   'vault.managedSource.unmanageSuccess': '已取消托管分组',
@@ -319,6 +351,10 @@ const zhCN: Messages = {
   'vault.hosts.export.toast.successWithSkipped': '已导出 {count} 个主机到 CSV（跳过 {skipped} 个不支持的主机）',
   'vault.hosts.export.toast.noHosts': '没有主机可导出',
   'vault.hosts.allHosts': '全部主机',
+  'vault.hosts.pinned': '已置顶',
+  'vault.hosts.recentlyConnected': '最近连接',
+  'vault.hosts.pinToTop': '置顶',
+  'vault.hosts.unpin': '取消置顶',
   'vault.hosts.copyCredentials': '复制账密信息',
   'vault.hosts.copyCredentials.toast.success': '账密信息已复制到剪贴板',
   'vault.hosts.copyCredentials.toast.noPassword': '该主机未保存密码',
@@ -328,6 +364,7 @@ const zhCN: Messages = {
   'vault.hosts.deselectAll': '取消全选',
   'vault.hosts.deleteSelected': '删除 ({count})',
   'vault.hosts.deleteMultiple.success': '已删除 {count} 个主机',
+  'vault.hosts.moveToGroup.success': '已将 {host} 移动到 {group}',
   'vault.hosts.empty.title': '设置你的主机',
   'vault.hosts.empty.desc': '保存主机以快速连接到你的服务器、虚拟机和容器。',
 
@@ -507,6 +544,9 @@ const zhCN: Messages = {
   'sftp.deleteConfirm.single': '删除 "{name}"？',
   'sftp.deleteConfirm.title': '删除 {count} 个项目？',
   'sftp.deleteConfirm.desc': '此操作不可撤销，将删除以下内容：',
+  'sftp.deleteConfirm.descSingle': '此操作不可撤销。',
+  'sftp.deleteConfirm.host': '主机',
+  'sftp.deleteConfirm.path': '路径',
   'sftp.error.loadFailed': '加载目录失败',
   'sftp.error.downloadFailed': '下载失败',
   'sftp.error.uploadFailed': '上传失败',
@@ -539,6 +579,8 @@ const zhCN: Messages = {
   'qs.search.placeholder': '搜索主机或标签页',
   'qs.jumpTo': '跳转到',
   'qs.localTerminal': '本地终端',
+  'qs.localShells': '本地 Shell',
+  'qs.default': '默认',
 
   // Select Host panel
   'selectHost.title': '选择主机',
@@ -600,6 +642,14 @@ const zhCN: Messages = {
   'hostDetails.distro.option.almalinux': 'AlmaLinux',
   'hostDetails.distro.option.oracle': 'Oracle Linux',
   'hostDetails.distro.option.kali': 'Kali Linux',
+  'hostDetails.distro.option.cisco': '思科',
+  'hostDetails.distro.option.juniper': '瞻博网络',
+  'hostDetails.distro.option.huawei': '华为',
+  'hostDetails.distro.option.hpe': '慧与 / H3C',
+  'hostDetails.distro.option.mikrotik': 'MikroTik',
+  'hostDetails.distro.option.fortinet': '飞塔',
+  'hostDetails.distro.option.paloalto': 'Palo Alto Networks',
+  'hostDetails.distro.option.zyxel': '合勤',
   'hostDetails.section.mosh': 'Mosh',
   'hostDetails.username.placeholder': '用户名',
   'hostDetails.password.placeholder': '密码',
@@ -632,6 +682,8 @@ const zhCN: Messages = {
   'hostDetails.legacyAlgorithms': '允许旧版算法',
   'hostDetails.legacyAlgorithms.desc': '启用已弃用的 SSH 算法（diffie-hellman-group1、ssh-dss、3des-cbc 等）以连接老旧网络设备。',
   'hostDetails.legacyAlgorithms.warning': '这些算法存在已知安全漏洞，仅建议在老旧设备不支持现代加密时启用。',
+  'hostDetails.backspaceBehavior': 'Backspace 行为',
+  'hostDetails.backspaceBehavior.default': '默认',
   'hostDetails.jumpHosts': '通过主机代理',
   'hostDetails.jumpHosts.hops': '{count} 跳',
   'hostDetails.jumpHosts.direct': '直连',
@@ -811,8 +863,14 @@ const zhCN: Messages = {
   'terminal.themeModal.globalTheme': '全局主题',
   'terminal.themeModal.globalFont': '全局字体',
   'terminal.themeModal.fontSize': '字体大小',
+  'terminal.themeModal.fontWeight': '字体粗细',
   'terminal.themeModal.livePreview': '实时预览',
   'terminal.themeModal.themeType': '{type} 主题',
+  'terminal.hiddenTheme.title': '当前隐藏主题',
+  'terminal.hiddenTheme.desc': '这个主题已从手动选择列表中隐藏；当你选择其他可见主题后，它会被替换。',
+  'topTabs.toggleTheme.systemExitTitle': '当前正在跟随系统主题',
+  'topTabs.toggleTheme.systemExitMessage': '请到设置里选择固定的浅色或深色主题。',
+  'topTabs.toggleTheme.openSettings': '打开设置',
 
   // Custom Themes
   'terminal.customTheme.section': '自定义主题',
@@ -941,6 +999,22 @@ const zhCN: Messages = {
   'cloudSync.history.download': '下载',
   'cloudSync.history.resolved': '已解决',
   'cloudSync.history.error': '错误',
+  'cloudSync.revisionHistory.viewButton': '历史版本',
+  'cloudSync.revisionHistory.title': '主机库版本历史',
+  'cloudSync.revisionHistory.description': '浏览并恢复 Gist 修订历史中的旧版主机库数据。',
+  'cloudSync.revisionHistory.empty': '未找到修订记录。',
+  'cloudSync.revisionHistory.current': '当前版本',
+  'cloudSync.revisionHistory.revision': '修订',
+  'cloudSync.revisionHistory.revisionPreview': '修订内容',
+  'cloudSync.revisionHistory.device': '设备',
+  'cloudSync.revisionHistory.hosts': '主机',
+  'cloudSync.revisionHistory.keys': '密钥',
+  'cloudSync.revisionHistory.snippets': '代码片段',
+  'cloudSync.revisionHistory.identities': '身份',
+  'cloudSync.revisionHistory.restoreButton': '恢复此版本',
+  'cloudSync.revisionHistory.restored': '已从选中的修订恢复主机库数据。',
+  'cloudSync.revisionHistory.revisionNotFound': '修订未找到或不包含主机库数据。',
+  'cloudSync.revisionHistory.decryptFailed': '无法解密此修订。可能是使用了不同的主密钥加密的。',
   'cloudSync.changeKey.title': '更改主密钥',
   'cloudSync.changeKey.current': '当前主密钥',
   'cloudSync.changeKey.new': '新的主密钥',
@@ -1210,6 +1284,8 @@ const zhCN: Messages = {
   'settings.terminal.themeModal.darkThemes': '深色主题',
   'settings.terminal.themeModal.lightThemes': '浅色主题',
   '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.section.font': '字体',
   'settings.terminal.section.cursor': '光标',
   'settings.terminal.section.keyboard': '键盘',
@@ -1280,6 +1356,14 @@ const zhCN: Messages = {
   'settings.terminal.scrollback.rows': '行数 *',
   'settings.terminal.keywordHighlight.title': '关键字高亮',
   'settings.terminal.keywordHighlight.resetColors': '重置为默认颜色',
+  'settings.terminal.keywordHighlight.addCustom': '添加自定义规则',
+  'settings.terminal.keywordHighlight.editCustom': '编辑规则',
+  'settings.terminal.keywordHighlight.labelField': '标签与颜色',
+  'settings.terminal.keywordHighlight.labelPlaceholder': '标签（如 Down）',
+  'settings.terminal.keywordHighlight.patternField': '正则表达式',
+  'settings.terminal.keywordHighlight.patternPlaceholder': '正则表达式（如 \\bdown\\b）',
+  'settings.terminal.keywordHighlight.invalidPattern': '无效的正则表达式',
+  'settings.terminal.keywordHighlight.preview': '预览',
   'settings.terminal.section.localShell': '本地 Shell',
   'settings.terminal.localShell.shell': 'Shell 可执行文件',
   'settings.terminal.localShell.shell.desc': 'Shell 可执行文件的路径（例如 /bin/zsh、pwsh.exe）。留空使用系统默认。',
@@ -1287,6 +1371,11 @@ const zhCN: Messages = {
   'settings.terminal.localShell.shell.detected': '检测到',
   'settings.terminal.localShell.shell.notFound': '未找到 Shell 可执行文件',
   'settings.terminal.localShell.shell.isDirectory': '路径是目录，不是可执行文件',
+  'settings.terminal.localShell.shell.default': '系统默认',
+  'settings.terminal.localShell.shell.custom': '自定义...',
+  'settings.terminal.localShell.shell.customPath': 'Shell 可执行文件路径',
+  'settings.terminal.localShell.shell.commonPaths': '常用路径',
+  'settings.terminal.localShell.shell.pathValid': '路径有效',
   'settings.terminal.localShell.startDir': '起始目录',
   'settings.terminal.localShell.startDir.desc': '打开本地终端时的起始目录。留空使用用户主目录。',
   'settings.terminal.localShell.startDir.placeholder': '用户主目录',
@@ -1305,7 +1394,7 @@ const zhCN: Messages = {
   // Settings > Terminal > Rendering
   'settings.terminal.section.rendering': '渲染',
   'settings.terminal.rendering.renderer': '渲染器',
-  'settings.terminal.rendering.renderer.desc': '选择终端渲染技术。自动模式会在低内存设备上使用 Canvas。更改将在新终端会话中生效。',
+  'settings.terminal.rendering.renderer.desc': '选择终端渲染技术。自动模式会在低内存设备上使用 DOM 渲染。更改将在新终端会话中生效。',
   'settings.terminal.rendering.auto': '自动',
 
   // Settings > Terminal > Autocomplete
@@ -1608,10 +1697,7 @@ const zhCN: Messages = {
   'keyboard.interactive.enterResponse': '输入响应',
   'keyboard.interactive.submit': '提交',
   'keyboard.interactive.verifying': '验证中...',
-  'keyboard.interactive.fill': '填入',
-  'keyboard.interactive.fillSaved': '填入已保存的密码',
-  'keyboard.interactive.useSaved': '使用已保存',
-  'keyboard.interactive.useSavedPassword': '使用已保存的密码',
+  'keyboard.interactive.savePassword': '保存密码',
 
   // Passphrase Modal for encrypted SSH keys
   'passphrase.title': 'SSH 密钥密码',
@@ -1691,10 +1777,26 @@ const zhCN: Messages = {
   'ai.claude.customPathPlaceholder': '例如 /usr/local/bin/claude',
   'ai.claude.check': '检查',
 
+  // AI GitHub Copilot CLI
+  'ai.copilot.title': 'GitHub Copilot CLI',
+  'ai.copilot.description': '通过 ACP over stdio（`copilot --acp --stdio`）接入 GitHub Copilot CLI。检测到后即可作为外部编程 Agent 使用。',
+  'ai.copilot.detecting': '检测中...',
+  'ai.copilot.detected': '已检测到',
+  'ai.copilot.notFound': '未找到',
+  'ai.copilot.path': '路径：',
+  'ai.copilot.notFoundHint': '在 PATH 中未找到 copilot。请安装或在下方指定可执行文件路径。',
+  'ai.copilot.customPathPlaceholder': '例如 /usr/local/bin/copilot',
+  'ai.copilot.check': '检查',
+
   // AI Default Agent
   'ai.defaultAgent': '默认 Agent',
   'ai.defaultAgent.description': '创建新 AI 会话时使用的 Agent',
   'ai.defaultAgent.catty': 'Catty（内置）',
+  'ai.toolAccess.title': '工具接入',
+  'ai.toolAccess.mode': 'Netcatty 接入模式',
+  'ai.toolAccess.description': '选择外部 ACP Agent 访问 Netcatty 会话的方式。MCP 会暴露内置服务器，Skills + CLI 会引导 Agent 读取本地 Skill 并调用 Netcatty CLI。',
+  'ai.toolAccess.mode.mcp': 'MCP',
+  'ai.toolAccess.mode.skills': 'Skills + CLI',
 
   // AI Chat
   'ai.chat.noProvider': '尚未配置 AI 提供商。请前往 **设置 → AI → 提供商** 添加并启用一个提供商。',
@@ -1771,7 +1873,7 @@ const zhCN: Messages = {
   // AI Safety Settings
   'ai.safety.title': '安全',
   'ai.safety.permissionMode': '权限模式',
-  'ai.safety.permissionMode.description': '控制 AI 与终端的交互方式。观察者模式通过 MCP Server 阻止所有写操作，对内置和 ACP Agent 均生效。确认模式对 ACP Agent 仅为建议性（ACP Agent 有自己的工具审批流程）。',
+  'ai.safety.permissionMode.description': '控制 AI 与终端的交互方式。观察者模式会通过 Netcatty 阻止所有写操作，对内置和 ACP Agent 均生效。确认模式对 ACP Agent 仅为建议性（ACP Agent 有自己的工具审批流程）。',
   'ai.safety.permissionMode.observer': '观察者 - 只读，禁止操作',
   'ai.safety.permissionMode.confirm': '确认 - 操作前询问',
   'ai.safety.permissionMode.autonomous': '自主 - 自由执行',
@@ -1781,7 +1883,7 @@ const zhCN: Messages = {
   'ai.safety.maxIterations': '最大迭代次数',
   'ai.safety.maxIterations.description': '防止 AI 失控执行的最大工具调用循环次数。ACP Agent 可能有自己的内部迭代限制，以其为准。',
   'ai.safety.blocklist': '命令黑名单',
-  'ai.safety.blocklist.description': '用于拦截危险命令的正则表达式。通过 MCP Server 对内置和 ACP Agent 均生效。',
+  'ai.safety.blocklist.description': '用于拦截危险命令的正则表达式。通过 Netcatty 执行层对内置和 ACP Agent 均生效。',
   'ai.safety.blocklist.placeholder': '正则表达式...',
   'ai.safety.blocklist.reset': '恢复默认',
   'ai.safety.blocklist.add': '添加规则',

application/state/customThemeStore.ts

@@ -75,7 +75,6 @@ class CustomThemeStore {
                 if (payload.key === STORAGE_KEY_CUSTOM_THEMES) {
                     // Another window changed custom themes — reload from localStorage
                     this.loadFromStorage();
-                    this.notify();
                 }
             });
         } catch {
@@ -129,6 +128,13 @@ class CustomThemeStore {
         this.notify();
         this.broadcastChange();
     };
+
+    replaceThemes = (themes: TerminalTheme[]) => {
+        this.themes = themes.map((theme) => ({ ...theme, colors: { ...theme.colors }, isCustom: true }));
+        this.saveToStorage();
+        this.notify();
+        this.broadcastChange();
+    };
 }
 
 // Singleton
@@ -172,5 +178,9 @@ export const useCustomThemeActions = () => {
         customThemeStore.deleteTheme(id);
     }, []);
 
-    return { addTheme, updateTheme, deleteTheme };
+    const replaceThemes = useCallback((themes: TerminalTheme[]) => {
+        customThemeStore.replaceThemes(themes);
+    }, []);
+
+    return { addTheme, updateTheme, deleteTheme, replaceThemes };
 };

application/state/fontStore.ts

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

application/state/sftp/useSftpPaneActions.ts

@@ -28,6 +28,7 @@ interface UseSftpPaneActionsParams {
   listRemoteFiles: (sftpId: string, path: string, encoding?: SftpFilenameEncoding) => Promise<SftpFileEntry[]>;
   handleSessionError: (side: "left" | "right", error: Error) => void;
   isSessionError: (err: unknown) => boolean;
+  clearSelectionsExcept: (target: { side: "left" | "right"; tabId: string } | null) => void;
   dirCacheTtlMs: number;
 }
 
@@ -78,6 +79,7 @@ export const useSftpPaneActions = ({
   listRemoteFiles,
   handleSessionError,
   isSessionError,
+  clearSelectionsExcept,
   dirCacheTtlMs,
 }: UseSftpPaneActionsParams): UseSftpPaneActionsResult => {
   const normalizePathForCompare = useCallback((path: string): string => {
@@ -465,6 +467,10 @@ export const useSftpPaneActions = ({
 
   const toggleSelection = useCallback(
     (side: "left" | "right", fileName: string, multiSelect: boolean) => {
+      const activeTabId = (side === "left" ? leftTabsRef : rightTabsRef).current.activeTabId;
+      if (activeTabId) {
+        clearSelectionsExcept({ side, tabId: activeTabId });
+      }
       updateActiveTab(side, (prev) => {
         const newSelection = new Set(multiSelect ? prev.selectedFiles : []);
         if (newSelection.has(fileName)) {
@@ -475,11 +481,15 @@ export const useSftpPaneActions = ({
         return { ...prev, selectedFiles: newSelection };
       });
     },
-    [updateActiveTab],
+    [updateActiveTab, clearSelectionsExcept, leftTabsRef, rightTabsRef],
   );
 
   const rangeSelect = useCallback(
     (side: "left" | "right", fileNames: string[]) => {
+      const activeTabId = (side === "left" ? leftTabsRef : rightTabsRef).current.activeTabId;
+      if (activeTabId) {
+        clearSelectionsExcept({ side, tabId: activeTabId });
+      }
       const newSelection = new Set<string>();
       for (const name of fileNames) {
         if (name && name !== "..") {
@@ -489,7 +499,7 @@ export const useSftpPaneActions = ({
 
       updateActiveTab(side, (prev) => ({ ...prev, selectedFiles: newSelection }));
     },
-    [updateActiveTab],
+    [updateActiveTab, clearSelectionsExcept, leftTabsRef, rightTabsRef],
   );
 
   const clearSelection = useCallback((side: "left" | "right") => {

application/state/sftp/useSftpTabsState.ts

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

application/state/useAIState.ts

@@ -5,6 +5,7 @@ import {
   STORAGE_KEY_AI_ACTIVE_PROVIDER,
   STORAGE_KEY_AI_ACTIVE_MODEL,
   STORAGE_KEY_AI_PERMISSION_MODE,
+  STORAGE_KEY_AI_TOOL_INTEGRATION_MODE,
   STORAGE_KEY_AI_HOST_PERMISSIONS,
   STORAGE_KEY_AI_EXTERNAL_AGENTS,
   STORAGE_KEY_AI_DEFAULT_AGENT,
@@ -19,6 +20,7 @@ import {
 import type {
   AISession,
   AIPermissionMode,
+  AIToolIntegrationMode,
   ProviderConfig,
   HostAIPermission,
   ExternalAgentConfig,
@@ -29,8 +31,17 @@ import type {
 import { DEFAULT_COMMAND_BLOCKLIST } from '../../infrastructure/ai/types';
 
 /** Typed accessor for the Electron IPC bridge exposed on `window.netcatty`. */
+interface AIBridge {
+  aiAcpCleanup?: (chatSessionId: string) => Promise<{ ok: boolean }>;
+  aiMcpSetPermissionMode?: (mode: AIPermissionMode) => Promise<unknown> | unknown;
+  aiMcpSetToolIntegrationMode?: (mode: AIToolIntegrationMode) => Promise<unknown> | unknown;
+  aiMcpSetCommandBlocklist?: (blocklist: string[]) => Promise<unknown> | unknown;
+  aiMcpSetCommandTimeout?: (timeout: number) => Promise<unknown> | unknown;
+  aiMcpSetMaxIterations?: (maxIterations: number) => Promise<unknown> | unknown;
+}
+
 function getAIBridge() {
-  return (window as unknown as { netcatty?: Record<string, (...args: unknown[]) => unknown> }).netcatty;
+  return (window as unknown as { netcatty?: AIBridge }).netcatty;
 }
 
 const AI_STATE_CHANGED_EVENT = 'netcatty:ai-state-changed';
@@ -192,6 +203,10 @@ export function useAIState() {
     if (stored === 'observer' || stored === 'confirm' || stored === 'autonomous') return stored;
     return 'confirm';
   });
+  const [toolIntegrationMode, setToolIntegrationModeRaw] = useState<AIToolIntegrationMode>(() => {
+    const stored = localStorageAdapter.readString(STORAGE_KEY_AI_TOOL_INTEGRATION_MODE);
+    return stored === 'skills' ? 'skills' : 'mcp';
+  });
   const [hostPermissions, setHostPermissionsRaw] = useState<HostAIPermission[]>(() =>
     localStorageAdapter.read<HostAIPermission[]>(STORAGE_KEY_AI_HOST_PERMISSIONS) ?? []
   );
@@ -252,7 +267,7 @@ export function useAIState() {
     let changed = false;
     const nextActiveSessionIdMap: Record<string, string | null> = {};
 
-    for (const [scopeKey, sessionId] of Object.entries(activeSessionIdMap)) {
+    for (const [scopeKey, sessionId] of Object.entries(activeSessionIdMap) as Array<[string, string | null]>) {
       const nextSessionId = sessionId && validSessionIds.has(sessionId) ? sessionId : null;
       nextActiveSessionIdMap[scopeKey] = nextSessionId;
       if (nextSessionId !== sessionId) {
@@ -330,6 +345,13 @@ export function useAIState() {
     });
   }, []);
 
+  const setToolIntegrationMode = useCallback((mode: AIToolIntegrationMode) => {
+    setToolIntegrationModeRaw(mode);
+    localStorageAdapter.writeString(STORAGE_KEY_AI_TOOL_INTEGRATION_MODE, mode);
+    const bridge = getAIBridge();
+    bridge?.aiMcpSetToolIntegrationMode?.(mode);
+  }, []);
+
   const setExternalAgents = useCallback((value: ExternalAgentConfig[] | ((prev: ExternalAgentConfig[]) => ExternalAgentConfig[])) => {
     setExternalAgentsRaw(prev => {
       const next = typeof value === 'function' ? value(prev) : value;
@@ -396,6 +418,15 @@ export function useAIState() {
             }
             break;
           }
+          case STORAGE_KEY_AI_TOOL_INTEGRATION_MODE:
+            {
+              const mode = localStorageAdapter.readString(STORAGE_KEY_AI_TOOL_INTEGRATION_MODE) === 'skills'
+                ? 'skills'
+                : 'mcp';
+              setToolIntegrationModeRaw(mode);
+              getAIBridge()?.aiMcpSetToolIntegrationMode?.(mode);
+            }
+            break;
           case STORAGE_KEY_AI_EXTERNAL_AGENTS: {
             const agents = localStorageAdapter.read<ExternalAgentConfig[]>(STORAGE_KEY_AI_EXTERNAL_AGENTS);
             if (agents != null && !Array.isArray(agents)) {
@@ -511,8 +542,17 @@ export function useAIState() {
     bridge?.aiMcpSetCommandTimeout?.(initialTimeout);
     const initialMaxIter = localStorageAdapter.readNumber(STORAGE_KEY_AI_MAX_ITERATIONS) ?? 20;
     bridge?.aiMcpSetMaxIterations?.(initialMaxIter);
-    const initialPermMode = localStorageAdapter.readString(STORAGE_KEY_AI_PERMISSION_MODE) ?? 'confirm';
+    const storedPermMode = localStorageAdapter.readString(STORAGE_KEY_AI_PERMISSION_MODE);
+    const initialPermMode: AIPermissionMode =
+      storedPermMode === 'observer' || storedPermMode === 'confirm' || storedPermMode === 'autonomous'
+        ? storedPermMode
+        : 'confirm';
     bridge?.aiMcpSetPermissionMode?.(initialPermMode);
+    const initialToolMode: AIToolIntegrationMode =
+      localStorageAdapter.readString(STORAGE_KEY_AI_TOOL_INTEGRATION_MODE) === 'skills'
+        ? 'skills'
+        : 'mcp';
+    bridge?.aiMcpSetToolIntegrationMode?.(initialToolMode);
   }, []);
 
   // ── Session CRUD ──
@@ -819,6 +859,8 @@ export function useAIState() {
     // Permission model
     globalPermissionMode,
     setGlobalPermissionMode,
+    toolIntegrationMode,
+    setToolIntegrationMode,
     hostPermissions,
     setHostPermissions,
 

application/state/useApplicationBackend.ts

@@ -15,15 +15,15 @@ export type SshAgentStatus = {
 
 export const useApplicationBackend = () => {
   const openExternal = useCallback(async (url: string) => {
-    try {
-      const bridge = netcattyBridge.get();
-      if (bridge?.openExternal) {
-        await bridge.openExternal(url);
-        return;
-      }
-    } catch {
-      // Ignore and fall back below
+    const bridge = netcattyBridge.get();
+    if (bridge?.openExternal) {
+      // Bridge resolves on success (either via system browser or in-app
+      // fallback window) and rejects only when both paths fail. Let the
+      // rejection propagate so callers can present a user-facing message.
+      await bridge.openExternal(url);
+      return;
     }
+    // Fallback for non-Electron environments (tests, dev server, etc.).
     window.open(url, "_blank", "noopener,noreferrer");
   }, []);
 

application/state/useAutoSync.ts

@@ -22,6 +22,32 @@ import { localStorageAdapter } from '../../infrastructure/persistence/localStora
 import { getEffectiveKnownHosts } from '../../infrastructure/syncHelpers';
 import { notify } from '../notification';
 
+/**
+ * Check whether a sync payload has any meaningful user data. Covers all
+ * synced entity arrays so that edge cases (e.g. user has 0 hosts but 1
+ * port forwarding rule) are not mistakenly treated as "empty".
+ */
+function isPayloadEffectivelyEmpty(payload: SyncPayload): boolean {
+  // Check all synced entity arrays.
+  const hasEntities =
+    (payload.hosts?.length ?? 0) > 0 ||
+    (payload.keys?.length ?? 0) > 0 ||
+    (payload.snippets?.length ?? 0) > 0 ||
+    (payload.identities?.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 false;
+  // Also consider settings: if any key has a defined value, the user has
+  // customized something worth preserving.
+  if (payload.settings && Object.values(payload.settings).some((v) => v !== undefined)) {
+    return false;
+  }
+  return true;
+}
+
 interface AutoSyncConfig {
   // Data to sync
   hosts: SyncPayload['hosts'];
@@ -32,6 +58,7 @@ interface AutoSyncConfig {
   snippetPackages?: SyncPayload['snippetPackages'];
   portForwardingRules?: SyncPayload['portForwardingRules'];
   knownHosts?: SyncPayload['knownHosts'];
+  groupConfigs?: SyncPayload['groupConfigs'];
   /** Opaque token that changes whenever a synced setting changes. */
   settingsVersion?: number;
 
@@ -56,10 +83,27 @@ export const useAutoSync = (config: AutoSyncConfig) => {
   const syncTimeoutRef = useRef<NodeJS.Timeout | null>(null);
   const lastSyncedDataRef = useRef<string>('');
   const hasCheckedRemoteRef = useRef(false);
+  /** True once checkRemoteVersion has completed (success or failure). Until
+   *  this is set, the debounced auto-sync effect will not fire, preventing
+   *  an empty local vault from racing ahead and overwriting a non-empty
+   *  cloud vault before the startup pull has run. See #679. */
+  const remoteCheckDoneRef = useRef(false);
   const isInitializedRef = useRef(false);
   const isSyncRunningRef = useRef(false);
   const skipNextSyncRef = useRef(false);
 
+  // State for the empty-vault-vs-cloud confirmation dialog (Fix D).
+  // When checkRemoteVersion detects that the local vault is empty but
+  // the cloud has data, it pauses and exposes this state so the root
+  // component can render a confirmation dialog.
+  const [emptyVaultConflict, setEmptyVaultConflict] = useState<{
+    remotePayload: SyncPayload;
+    hostCount: number;
+    keyCount: number;
+    snippetCount: number;
+  } | null>(null);
+  const emptyVaultResolveRef = useRef<((action: 'restore' | 'keep-empty') => void) | null>(null);
+
   // Listen for SFTP bookmark changes to trigger auto-sync
   const [bookmarksVersion, setBookmarksVersion] = useState(0);
   useEffect(() => {
@@ -95,6 +139,7 @@ export const useAutoSync = (config: AutoSyncConfig) => {
       snippetPackages: config.snippetPackages,
       portForwardingRules: effectivePFRules,
       knownHosts: effectiveKnownHosts,
+      groupConfigs: config.groupConfigs,
     };
   }, [
     config.hosts,
@@ -105,6 +150,7 @@ export const useAutoSync = (config: AutoSyncConfig) => {
     config.snippetPackages,
     config.portForwardingRules,
     config.knownHosts,
+    config.groupConfigs,
   ]);
 
   // Build sync payload
@@ -170,6 +216,16 @@ export const useAutoSync = (config: AutoSyncConfig) => {
         throw new Error(t('sync.credentialsUnavailable'));
       }
 
+      // Prevent pushing an empty vault to cloud. This is almost always
+      // a sign that the local state was lost (update, import failure,
+      // storage corruption) rather than a deliberate "delete everything".
+      // We only block auto-sync — manual trigger from Settings can still
+      // push if the user explicitly wants to.
+      if (isPayloadEffectivelyEmpty(payload) && trigger === 'auto') {
+        console.warn('[AutoSync] Blocked: refusing to auto-sync an empty vault to cloud');
+        return;
+      }
+
       const results = await sync.syncNow(payload);
 
       // Apply merged payloads first (before checking for failures) so local
@@ -231,18 +287,53 @@ export const useAutoSync = (config: AutoSyncConfig) => {
       const remotePayload = await sync.downloadFromProvider(connectedProvider);
 
       if (remotePayload && remotePayload.syncedAt > state.localUpdatedAt) {
-        const { mergeSyncPayloads } = await import('../../domain/syncMerge');
         const localPayload = buildPayload();
+        const localIsEmpty = isPayloadEffectivelyEmpty(localPayload);
+        const remoteHasData = !isPayloadEffectivelyEmpty(remotePayload);
+
+        // If local vault is empty but cloud has data, this almost certainly
+        // means the user's data was lost (update, storage corruption, etc.).
+        // Pause and ask the user what to do instead of silently merging.
+        if (localIsEmpty && remoteHasData) {
+          const userAction = await new Promise<'restore' | 'keep-empty'>((resolve) => {
+            emptyVaultResolveRef.current = resolve;
+            setEmptyVaultConflict({
+              remotePayload,
+              hostCount: remotePayload.hosts?.length ?? 0,
+              keyCount: remotePayload.keys?.length ?? 0,
+              snippetCount: remotePayload.snippets?.length ?? 0,
+            });
+          });
+          setEmptyVaultConflict(null);
+          emptyVaultResolveRef.current = null;
+
+          if (userAction === 'restore') {
+            config.onApplyPayload(remotePayload);
+            skipNextSyncRef.current = true;
+            notify.success(t('sync.autoSync.restoredMessage'), t('sync.autoSync.restoredTitle'));
+          } else {
+            // User chose to keep the empty vault. Don't apply remote data.
+            // The next auto-sync will eventually push the empty state if
+            // the user makes another edit.
+            notify.info(t('sync.autoSync.keptLocalMessage'), t('sync.autoSync.keptLocalTitle'));
+          }
+          return;
+        }
+
+        const { mergeSyncPayloads } = await import('../../domain/syncMerge');
         const mergeResult = mergeSyncPayloads(base, localPayload, remotePayload);
 
         config.onApplyPayload(mergeResult.payload);
-        // Don't save base or skip auto-sync — let the data-change effect
-        // naturally trigger an upload of the merged payload (which will
-        // go through syncAllProviders and save base on success).
+        // Prevent the data-change effect from immediately re-uploading the
+        // merged payload — the merge already incorporated both sides. The
+        // next deliberate edit by the user will trigger a normal sync.
+        skipNextSyncRef.current = true;
         notify.success(t('sync.autoSync.syncedMessage'), t('sync.autoSync.syncedTitle'));
       }
     } catch (error) {
       console.error('[AutoSync] Failed to check remote version:', error);
+    } finally {
+      remoteCheckDoneRef.current = true;
     }
   }, [sync, config, buildPayload, t]);
   
@@ -252,7 +343,15 @@ export const useAutoSync = (config: AutoSyncConfig) => {
     if (!sync.hasAnyConnectedProvider || !sync.autoSyncEnabled || !sync.isUnlocked) {
       return;
     }
-    
+
+    // Don't auto-sync until the startup remote check has completed.
+    // Without this gate, an empty local vault can push to the cloud
+    // before checkRemoteVersion even runs, overwriting a non-empty
+    // remote vault — the exact bug described in #679.
+    if (!remoteCheckDoneRef.current) {
+      return;
+    }
+
     // Skip initial render
     if (!isInitializedRef.current) {
       isInitializedRef.current = true;
@@ -310,19 +409,32 @@ export const useAutoSync = (config: AutoSyncConfig) => {
     }
   }, [sync.hasAnyConnectedProvider, sync.isUnlocked, checkRemoteVersion]);
   
-  // Reset check flag when provider disconnects
+  // Reset check flags when provider disconnects
   useEffect(() => {
     if (!sync.hasAnyConnectedProvider) {
       hasCheckedRemoteRef.current = false;
+      remoteCheckDoneRef.current = false;
     }
   }, [sync.hasAnyConnectedProvider]);
   
+  const resolveEmptyVaultConflict = useCallback((action: 'restore' | 'keep-empty') => {
+    // Guard: resolve only once (prevents double-click from entering an
+    // inconsistent state). The ref is nulled immediately so subsequent
+    // calls are no-ops.
+    const resolve = emptyVaultResolveRef.current;
+    if (!resolve) return;
+    emptyVaultResolveRef.current = null;
+    resolve(action);
+  }, []);
+
   return {
     syncNow,
     buildPayload,
     isSyncing: sync.isSyncing,
     isConnected: sync.hasAnyConnectedProvider,
     autoSyncEnabled: sync.autoSyncEnabled,
+    emptyVaultConflict,
+    resolveEmptyVaultConflict,
   };
 };
 

application/state/useCloudSync.ts

@@ -90,7 +90,21 @@ export interface CloudSyncHook {
   syncToProvider: (provider: CloudProvider, payload: SyncPayload) => Promise<SyncResult>;
   downloadFromProvider: (provider: CloudProvider) => Promise<SyncPayload | null>;
   resolveConflict: (resolution: ConflictResolution) => Promise<SyncPayload | null>;
-  
+
+  // Gist Revision History
+  getGistRevisionHistory: () => Promise<Array<{ version: string; date: Date }>>;
+  downloadGistRevision: (sha: string) => Promise<{
+    payload: SyncPayload;
+    meta: import('../../domain/sync').SyncFileMeta;
+    preview: {
+      hostCount: number;
+      keyCount: number;
+      snippetCount: number;
+      identityCount: number;
+      portForwardingRuleCount: number;
+    };
+  } | null>;
+
   // Settings
   setAutoSync: (enabled: boolean, intervalMinutes?: number) => void;
   setDeviceName: (name: string) => void;
@@ -475,6 +489,10 @@ export const useCloudSync = (): CloudSyncHook => {
     syncToProvider: syncToProviderWithUnlock,
     downloadFromProvider: downloadFromProviderWithUnlock,
     resolveConflict: resolveConflictWithUnlock,
+
+    // Gist Revision History (#679)
+    getGistRevisionHistory: manager.getGistRevisionHistory.bind(manager),
+    downloadGistRevision: manager.downloadGistRevision.bind(manager),
     
     // Settings
     setAutoSync,

application/state/useImmersiveMode.ts

@@ -144,6 +144,7 @@ function applyImmersiveStyle(css: string, isDark: boolean, bg: string) {
 
 function removeImmersiveStyle() {
   document.getElementById(STYLE_ID)?.remove();
+  delete document.documentElement.dataset.immersiveTheme;
 }
 
 // ---------------------------------------------------------------------------
@@ -151,12 +152,10 @@ function removeImmersiveStyle() {
 // ---------------------------------------------------------------------------
 
 export function useImmersiveMode({
-  isImmersive,
   activeTabId,
   activeTerminalTheme,
   restoreOriginalTheme,
 }: {
-  isImmersive: boolean;
   activeTabId: string;
   activeTerminalTheme: TerminalTheme | null;
   restoreOriginalTheme: () => void;
@@ -170,18 +169,19 @@ export function useImmersiveMode({
 
   // APPLY: useLayoutEffect — runs before paint, O(1) Map lookup, single DOM write
   useLayoutEffect(() => {
-    if (isImmersive && isTerminalTab && activeTerminalTheme) {
+    if (isTerminalTab && activeTerminalTheme) {
       const fp = themeFingerprint(activeTerminalTheme);
       if (appliedFpRef.current === fp) return;
       overrideActiveRef.current = true;
       appliedFpRef.current = fp;
       applyImmersiveStyle(getImmersiveCss(activeTerminalTheme), activeTerminalTheme.type === 'dark', activeTerminalTheme.colors.background);
+      document.documentElement.dataset.immersiveTheme = fp;
     }
-  }, [isImmersive, isTerminalTab, activeTerminalTheme]);
+  }, [isTerminalTab, activeTerminalTheme]);
 
   // RESTORE: useEffect — runs after paint, with fade overlay
   useEffect(() => {
-    if (isImmersive && isTerminalTab && activeTerminalTheme) return;
+    if (isTerminalTab && activeTerminalTheme) return;
     if (!overrideActiveRef.current) return;
     overrideActiveRef.current = false;
     appliedFpRef.current = null;
@@ -198,7 +198,7 @@ export function useImmersiveMode({
     });
     const fallback = setTimeout(() => { if (overlay.parentNode) overlay.remove(); }, 400);
     return () => { clearTimeout(fallback); if (overlay.parentNode) overlay.remove(); };
-  }, [isImmersive, isTerminalTab, activeTerminalTheme, restoreOriginalTheme]);
+  }, [isTerminalTab, activeTerminalTheme, restoreOriginalTheme]);
 
   // Cleanup on unmount
   useEffect(() => {

application/state/usePortForwardingAutoStart.ts

@@ -4,7 +4,8 @@
  * when the application starts, not when the user navigates to the port forwarding page.
  */
 import { useCallback, useEffect, useRef } from "react";
-import { Host, Identity, PortForwardingRule, SSHKey } from "../../domain/models";
+import { GroupConfig, Host, Identity, PortForwardingRule, SSHKey } from "../../domain/models";
+import { resolveGroupDefaults, applyGroupDefaults } from "../../domain/groupConfig";
 import { STORAGE_KEY_PORT_FORWARDING } from "../../infrastructure/config/storageKeys";
 import { localStorageAdapter } from "../../infrastructure/persistence/localStorageAdapter";
 import {
@@ -19,6 +20,7 @@ export interface UsePortForwardingAutoStartOptions {
   hosts: Host[];
   keys: SSHKey[];
   identities: Identity[];
+  groupConfigs: GroupConfig[];
 }
 
 /**
@@ -29,11 +31,13 @@ export const usePortForwardingAutoStart = ({
   hosts,
   keys,
   identities,
+  groupConfigs,
 }: UsePortForwardingAutoStartOptions): void => {
   const autoStartExecutedRef = useRef(false);
   const hostsRef = useRef<Host[]>(hosts);
   const keysRef = useRef<SSHKey[]>(keys);
   const identitiesRef = useRef<Identity[]>(identities);
+  const groupConfigsRef = useRef<GroupConfig[]>(groupConfigs);
 
   const isHostAuthReady = useCallback((host: Host, seen = new Set<string>()): boolean => {
     if (!host || seen.has(host.id)) return true;
@@ -73,6 +77,16 @@ export const usePortForwardingAutoStart = ({
     identitiesRef.current = identities;
   }, [identities]);
 
+  useEffect(() => {
+    groupConfigsRef.current = groupConfigs;
+  }, [groupConfigs]);
+
+  const resolveEffectiveHost = useCallback((host: Host): Host => {
+    if (!host.group) return host;
+    const defaults = resolveGroupDefaults(host.group, groupConfigsRef.current);
+    return applyGroupDefaults(host, defaults);
+  }, []);
+
   // Set up the reconnect callback
   useEffect(() => {
     const handleReconnect = async (
@@ -89,11 +103,12 @@ export const usePortForwardingAutoStart = ({
         return { success: false, error: "Rule or host not found" };
       }
 
-      const host = hostsRef.current.find((h) => h.id === rule.hostId);
-      if (!host) {
+      const rawHost = hostsRef.current.find((h) => h.id === rule.hostId);
+      if (!rawHost) {
         return { success: false, error: "Host not found" };
       }
 
+      const host = resolveEffectiveHost(rawHost);
       return startPortForward(rule, host, hostsRef.current, keysRef.current, identitiesRef.current, onStatusChange, true);
     };
 
@@ -101,7 +116,7 @@ export const usePortForwardingAutoStart = ({
     return () => {
       setReconnectCallback(null);
     };
-  }, []);
+  }, [resolveEffectiveHost]);
 
   // Auto-start rules on app launch
   useEffect(() => {
@@ -146,8 +161,9 @@ export const usePortForwardingAutoStart = ({
 
       // Start each auto-start rule
       for (const rule of autoStartRules) {
-        const host = hosts.find((h) => h.id === rule.hostId);
-        if (host) {
+        const rawHost = hosts.find((h) => h.id === rule.hostId);
+        if (rawHost) {
+          const host = resolveEffectiveHost(rawHost);
           void startPortForward(
             rule,
             host,
@@ -180,5 +196,5 @@ export const usePortForwardingAutoStart = ({
     };
 
     void runAutoStart();
-  }, [hosts, identities, isHostAuthReady, keys]);
+  }, [hosts, identities, isHostAuthReady, keys, resolveEffectiveHost]);
 };

application/state/useSessionState.ts

@@ -40,18 +40,26 @@ export const useSessionState = () => {
 
   const createLocalTerminal = useCallback((options?: {
     shellType?: TerminalSession['shellType'];
+    shell?: string;
+    shellArgs?: string[];
+    shellName?: string;
+    shellIcon?: string;
   }) => {
     const sessionId = crypto.randomUUID();
     const localHostId = `local-${sessionId}`;
     const newSession: TerminalSession = {
       id: sessionId,
       hostId: localHostId,
-      hostLabel: 'Local Terminal',
+      hostLabel: options?.shellName || 'Local Terminal',
       hostname: 'localhost',
       username: 'local',
       status: 'connecting',
       protocol: 'local',
       shellType: options?.shellType,
+      localShell: options?.shell,
+      localShellArgs: options?.shellArgs,
+      localShellName: options?.shellName,
+      localShellIcon: options?.shellIcon,
     };
     setSessions(prev => [...prev, newSession]);
     setActiveTabId(sessionId);
@@ -451,6 +459,10 @@ export const useSessionState = () => {
           moshEnabled: session.moshEnabled,
           shellType: nextShellType,
           charset: session.charset,
+          localShell: session.localShell,
+          localShellArgs: session.localShellArgs,
+          localShellName: session.localShellName,
+          localShellIcon: session.localShellIcon,
         };
 
         // Add pane to existing workspace
@@ -483,6 +495,10 @@ export const useSessionState = () => {
         moshEnabled: session.moshEnabled,
         shellType: nextShellType,
         charset: session.charset,
+        localShell: session.localShell,
+        localShellArgs: session.localShellArgs,
+        localShellName: session.localShellName,
+        localShellIcon: session.localShellIcon,
       };
 
       const hint: SplitHint = {
@@ -659,6 +675,10 @@ export const useSessionState = () => {
         shellType: nextShellType,
         charset: session.charset,
         serialConfig: session.serialConfig,
+        localShell: session.localShell,
+        localShellArgs: session.localShellArgs,
+        localShellName: session.localShellName,
+        localShellIcon: session.localShellIcon,
       };
 
       setActiveTabId(newSession.id);

application/state/useSettingsState.ts

@@ -4,6 +4,7 @@ import {
   STORAGE_KEY_COLOR,
   STORAGE_KEY_SYNC,
   STORAGE_KEY_TERM_THEME,
+  STORAGE_KEY_TERM_FOLLOW_APP_THEME,
   STORAGE_KEY_THEME,
   STORAGE_KEY_TERM_FONT_FAMILY,
   STORAGE_KEY_TERM_FONT_SIZE,
@@ -33,10 +34,11 @@ import {
   STORAGE_KEY_GLOBAL_HOTKEY_ENABLED,
   STORAGE_KEY_AUTO_UPDATE_ENABLED,
   STORAGE_KEY_WORKSPACE_FOCUS_STYLE,
-  STORAGE_KEY_IMMERSIVE_MODE,
+
 } from '../../infrastructure/config/storageKeys';
 import { DEFAULT_UI_LOCALE, resolveSupportedLocale } from '../../infrastructure/config/i18n';
 import { TERMINAL_THEMES } from '../../infrastructure/config/terminalThemes';
+import { getTerminalThemeForUiTheme } from '../../domain/terminalAppearance';
 import { customThemeStore, useCustomThemes } from '../state/customThemeStore';
 import { DEFAULT_FONT_SIZE } from '../../infrastructure/config/fonts';
 import { DARK_UI_THEMES, LIGHT_UI_THEMES, UiThemeTokens, getUiThemeById } from '../../infrastructure/config/uiThemes';
@@ -125,7 +127,7 @@ const applyThemeTokens = (
   accentOverride: string,
 ) => {
   const root = window.document.documentElement;
-  // If immersive mode is active (style tag present), it owns the dark/light class — don't override
+  // If immersive override is active (style tag present), it owns the dark/light class — don't override
   if (!document.getElementById('netcatty-immersive-override')) {
     root.classList.remove('light', 'dark');
     root.classList.add(resolvedTheme);
@@ -195,6 +197,17 @@ export const useSettingsState = () => {
   });
   const [syncConfig, setSyncConfig] = useState<SyncConfig | null>(() => localStorageAdapter.read<SyncConfig>(STORAGE_KEY_SYNC));
   const [terminalThemeId, setTerminalThemeId] = useState<string>(() => localStorageAdapter.readString(STORAGE_KEY_TERM_THEME) || DEFAULT_TERMINAL_THEME);
+  const [followAppTerminalTheme, setFollowAppTerminalThemeState] = useState<boolean>(() => {
+    const stored = localStorageAdapter.readString(STORAGE_KEY_TERM_FOLLOW_APP_THEME);
+    if (stored !== null) return stored === 'true';
+    // First time seeing this key. For genuinely fresh installs (no existing
+    // terminal theme in storage) default ON so the terminal matches the app
+    // theme out of the box. For upgrades from an older version (existing
+    // terminal theme present) default OFF to avoid silently overriding the
+    // user's manual choice.
+    const isUpgrade = !!localStorageAdapter.readString(STORAGE_KEY_TERM_THEME);
+    return !isUpgrade;
+  });
   const [terminalFontFamilyId, setTerminalFontFamilyId] = useState<string>(() => localStorageAdapter.readString(STORAGE_KEY_TERM_FONT_FAMILY) || DEFAULT_FONT_FAMILY);
   const [terminalFontSize, setTerminalFontSize] = useState<number>(() => localStorageAdapter.readNumber(STORAGE_KEY_TERM_FONT_SIZE) || DEFAULT_FONT_SIZE);
   const [uiLanguage, setUiLanguage] = useState<UILanguage>(() => {
@@ -340,20 +353,6 @@ export const useSettingsState = () => {
     }
   }, []);
 
-  const [immersiveMode, setImmersiveModeState] = useState<boolean>(() => {
-    const stored = localStorageAdapter.readString(STORAGE_KEY_IMMERSIVE_MODE);
-    if (stored === null || stored === '') {
-      // Persist default so collectSyncableSettings() can include it
-      localStorageAdapter.writeString(STORAGE_KEY_IMMERSIVE_MODE, 'true');
-      return true;
-    }
-    return stored === 'true';
-  });
-  const setImmersiveMode = useCallback((enabled: boolean) => {
-    setImmersiveModeState(enabled);
-    localStorageAdapter.writeString(STORAGE_KEY_IMMERSIVE_MODE, String(enabled));
-    notifySettingsChanged(STORAGE_KEY_IMMERSIVE_MODE, enabled);
-  }, [notifySettingsChanged]);
 
   const setSftpTransferConcurrency = useCallback((value: number) => {
     const clamped = Math.max(1, Math.min(16, Math.round(value)));
@@ -465,21 +464,13 @@ export const useSettingsState = () => {
     const storedDefaultViewMode = readStoredString(STORAGE_KEY_SFTP_DEFAULT_VIEW_MODE);
     if (storedDefaultViewMode === 'list' || storedDefaultViewMode === 'tree') setSftpDefaultViewMode(storedDefaultViewMode);
 
-    // Immersive mode
-    const storedImmersive = readStoredString(STORAGE_KEY_IMMERSIVE_MODE);
-    if (storedImmersive === 'true' || storedImmersive === 'false') {
-      const val = storedImmersive === 'true';
-      setImmersiveModeState(val);
-      notifySettingsChanged(STORAGE_KEY_IMMERSIVE_MODE, val);
-    }
-
     // Workspace focus style
     const storedFocusStyle = readStoredString(STORAGE_KEY_WORKSPACE_FOCUS_STYLE);
     if (storedFocusStyle === 'dim' || storedFocusStyle === 'border') setWorkspaceFocusStyleState(storedFocusStyle);
 
     // Custom terminal themes
     customThemeStore.loadFromStorage();
-  }, [syncAppearanceFromStorage, syncCustomCssFromStorage, setTerminalSettings, notifySettingsChanged]);
+  }, [syncAppearanceFromStorage, syncCustomCssFromStorage, setTerminalSettings]);
 
   useLayoutEffect(() => {
     const tokens = getUiThemeById(resolvedTheme, resolvedTheme === 'dark' ? darkUiThemeId : lightUiThemeId).tokens;
@@ -561,6 +552,10 @@ export const useSettingsState = () => {
       if (key === STORAGE_KEY_TERM_THEME && typeof value === 'string') {
         setTerminalThemeId(value);
       }
+      if (key === STORAGE_KEY_TERM_FOLLOW_APP_THEME) {
+        const next = value === true || value === 'true';
+        setFollowAppTerminalThemeState((prev) => (prev === next ? prev : next));
+      }
       if (key === STORAGE_KEY_TERM_FONT_FAMILY && typeof value === 'string') {
         setTerminalFontFamilyId(value);
       }
@@ -625,9 +620,6 @@ export const useSettingsState = () => {
           setSftpDefaultViewMode((prev) => (prev === value ? prev : value));
         }
       }
-      if (key === STORAGE_KEY_IMMERSIVE_MODE && typeof value === 'boolean') {
-        setImmersiveModeState((prev) => (prev === value ? prev : value));
-      }
       if (key === STORAGE_KEY_WORKSPACE_FOCUS_STYLE && (value === 'dim' || value === 'border')) {
         setWorkspaceFocusStyleState((prev) => (prev === value ? prev : value));
       }
@@ -667,20 +659,20 @@ export const useSettingsState = () => {
   const settingsSnapshotRef = useRef({
     theme, lightUiThemeId, darkUiThemeId, accentMode, customAccent,
     customCSS, uiFontFamilyId, hotkeyScheme, uiLanguage,
-    terminalThemeId, terminalFontFamilyId, terminalFontSize,
+    terminalThemeId, followAppTerminalTheme, terminalFontFamilyId, terminalFontSize,
     sftpDoubleClickBehavior, sftpAutoSync, sftpShowHiddenFiles,
     sftpUseCompressedUpload, sftpAutoOpenSidebar, sftpDefaultViewMode,
     editorWordWrap, sessionLogsEnabled, sessionLogsDir, sessionLogsFormat,
-    globalHotkeyEnabled, autoUpdateEnabled, immersiveMode,
+    globalHotkeyEnabled, autoUpdateEnabled,
   });
   settingsSnapshotRef.current = {
     theme, lightUiThemeId, darkUiThemeId, accentMode, customAccent,
     customCSS, uiFontFamilyId, hotkeyScheme, uiLanguage,
-    terminalThemeId, terminalFontFamilyId, terminalFontSize,
+    terminalThemeId, followAppTerminalTheme, terminalFontFamilyId, terminalFontSize,
     sftpDoubleClickBehavior, sftpAutoSync, sftpShowHiddenFiles,
     sftpUseCompressedUpload, sftpAutoOpenSidebar, sftpDefaultViewMode,
     editorWordWrap, sessionLogsEnabled, sessionLogsDir, sessionLogsFormat,
-    globalHotkeyEnabled, autoUpdateEnabled, immersiveMode,
+    globalHotkeyEnabled, autoUpdateEnabled,
   };
 
   // Listen for storage changes from other windows (cross-window sync)
@@ -757,6 +749,13 @@ export const useSettingsState = () => {
           setTerminalThemeId(e.newValue);
         }
       }
+      // Sync follow-app-theme toggle from other windows
+      if (e.key === STORAGE_KEY_TERM_FOLLOW_APP_THEME && e.newValue) {
+        const next = e.newValue === 'true';
+        if (next !== s.followAppTerminalTheme) {
+          setFollowAppTerminalThemeState(next);
+        }
+      }
       // Sync terminal font family from other windows
       if (e.key === STORAGE_KEY_TERM_FONT_FAMILY && e.newValue) {
         if (e.newValue !== s.terminalFontFamilyId) {
@@ -849,13 +848,6 @@ export const useSettingsState = () => {
           setAutoUpdateEnabled(newValue);
         }
       }
-      // Sync immersive mode from other windows
-      if (e.key === STORAGE_KEY_IMMERSIVE_MODE && e.newValue !== null) {
-        const newValue = e.newValue === 'true';
-        if (newValue !== s.immersiveMode) {
-          setImmersiveModeState(newValue);
-        }
-      }
       // Sync workspace focus style from other windows
       if (e.key === STORAGE_KEY_WORKSPACE_FOCUS_STYLE && e.newValue !== null) {
         if (e.newValue === 'dim' || e.newValue === 'border') {
@@ -881,6 +873,12 @@ export const useSettingsState = () => {
     notifySettingsChanged(STORAGE_KEY_TERM_THEME, terminalThemeId);
   }, [terminalThemeId, notifySettingsChanged]);
 
+  useEffect(() => {
+    localStorageAdapter.writeString(STORAGE_KEY_TERM_FOLLOW_APP_THEME, String(followAppTerminalTheme));
+    if (!persistMountedRef.current) return;
+    notifySettingsChanged(STORAGE_KEY_TERM_FOLLOW_APP_THEME, String(followAppTerminalTheme));
+  }, [followAppTerminalTheme, notifySettingsChanged]);
+
   useEffect(() => {
     localStorageAdapter.writeString(STORAGE_KEY_TERM_FONT_FAMILY, terminalFontFamilyId);
     if (!persistMountedRef.current) return;
@@ -1148,12 +1146,21 @@ export const useSettingsState = () => {
   // Subscribe to custom theme changes so editing in-place triggers re-render
   const customThemes = useCustomThemes();
 
-  const currentTerminalTheme = useMemo(
-    () => TERMINAL_THEMES.find(t => t.id === terminalThemeId)
+  const currentTerminalTheme = useMemo(() => {
+    // When "Follow Application Theme" is enabled, pick the terminal theme
+    // whose background matches the active UI theme preset.
+    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) return found;
+      }
+    }
+    return TERMINAL_THEMES.find(t => t.id === terminalThemeId)
       || customThemes.find(t => t.id === terminalThemeId)
-      || TERMINAL_THEMES[0],
-    [terminalThemeId, customThemes]
-  );
+      || TERMINAL_THEMES[0];
+  }, [terminalThemeId, customThemes, followAppTerminalTheme, resolvedTheme, lightUiThemeId, darkUiThemeId]);
 
   const updateTerminalSetting = useCallback(<K extends keyof TerminalSettings>(
     key: K,
@@ -1188,6 +1195,8 @@ export const useSettingsState = () => {
     setUiLanguage,
     terminalThemeId,
     setTerminalThemeId,
+    followAppTerminalTheme,
+    setFollowAppTerminalTheme: setFollowAppTerminalThemeState,
     currentTerminalTheme,
     terminalFontFamilyId,
     setTerminalFontFamilyId,
@@ -1247,8 +1256,6 @@ export const useSettingsState = () => {
     setGlobalHotkeyEnabled,
     rehydrateAllFromStorage,
     reapplyCurrentTheme,
-    immersiveMode,
-    setImmersiveMode,
     workspaceFocusStyle,
     setWorkspaceFocusStyle,
     // Opaque version that changes when any synced setting changes, used by useAutoSync.
@@ -1259,7 +1266,7 @@ export const useSettingsState = () => {
       terminalThemeId, terminalFontFamilyId, terminalFontSize, terminalSettings,
       customKeyBindings, editorWordWrap,
       sftpDoubleClickBehavior, sftpAutoSync, sftpShowHiddenFiles, sftpUseCompressedUpload, sftpAutoOpenSidebar, sftpDefaultViewMode,
-      customThemes, immersiveMode, workspaceFocusStyle,
+      customThemes, workspaceFocusStyle,
     ]),
   };
 };

application/state/useSftpState.ts

@@ -57,6 +57,7 @@ export const useSftpState = (
     getActivePane,
     updateTab,
     updateActiveTab,
+    clearSelectionsExcept,
     setTabShowHiddenFiles,
     addTab,
     closeTab,
@@ -235,6 +236,7 @@ export const useSftpState = (
     listRemoteFiles,
     handleSessionError,
     isSessionError,
+    clearSelectionsExcept,
     dirCacheTtlMs: DIR_CACHE_TTL_MS,
   });
 
@@ -339,6 +341,7 @@ export const useSftpState = (
     toggleSelection,
     rangeSelect,
     clearSelection,
+    clearSelectionsExcept,
     selectAll,
     setFilter,
     setFilenameEncoding,
@@ -392,6 +395,7 @@ export const useSftpState = (
     toggleSelection,
     rangeSelect,
     clearSelection,
+    clearSelectionsExcept,
     selectAll,
     setFilter,
     setFilenameEncoding,
@@ -448,6 +452,8 @@ export const useSftpState = (
     toggleSelection: (...args: Parameters<typeof toggleSelection>) => methodsRef.current.toggleSelection(...args),
     rangeSelect: (...args: Parameters<typeof rangeSelect>) => methodsRef.current.rangeSelect(...args),
     clearSelection: (...args: Parameters<typeof clearSelection>) => methodsRef.current.clearSelection(...args),
+    clearSelectionsExcept: (...args: Parameters<typeof clearSelectionsExcept>) =>
+      methodsRef.current.clearSelectionsExcept(...args),
     selectAll: (...args: Parameters<typeof selectAll>) => methodsRef.current.selectAll(...args),
     setFilter: (...args: Parameters<typeof setFilter>) => methodsRef.current.setFilter(...args),
     setFilenameEncoding: (...args: Parameters<typeof setFilenameEncoding>) =>

application/state/useStoredBoolean.ts

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

application/state/useTerminalBackend.ts

@@ -128,6 +128,22 @@ export const useTerminalBackend = () => {
     return bridge.getSessionPwd(sessionId);
   }, []);
 
+  const getSessionRemoteInfo = useCallback(async (sessionId: string) => {
+    const bridge = netcattyBridge.get();
+    if (!bridge?.getSessionRemoteInfo) {
+      return { success: false, error: 'getSessionRemoteInfo unavailable' };
+    }
+    return bridge.getSessionRemoteInfo(sessionId);
+  }, []);
+
+  const getSessionDistroInfo = useCallback(async (sessionId: string) => {
+    const bridge = netcattyBridge.get();
+    if (!bridge?.getSessionDistroInfo) {
+      return { success: false, error: 'getSessionDistroInfo unavailable' };
+    }
+    return bridge.getSessionDistroInfo(sessionId);
+  }, []);
+
   const getServerStats = useCallback(async (sessionId: string) => {
     const bridge = netcattyBridge.get();
     if (!bridge?.getServerStats) return { success: false, error: 'getServerStats unavailable' };
@@ -150,6 +166,8 @@ export const useTerminalBackend = () => {
     listSerialPorts,
     execCommand,
     getSessionPwd,
+    getSessionRemoteInfo,
+    getSessionDistroInfo,
     getServerStats,
     writeToSession,
     resizeSession,

application/state/useVaultState.ts

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

application/syncPayload.ts

@@ -8,6 +8,7 @@
  */
 
 import type {
+  GroupConfig,
   Host,
   Identity,
   KnownHost,
@@ -41,7 +42,7 @@ import {
   STORAGE_KEY_SFTP_AUTO_OPEN_SIDEBAR,
   STORAGE_KEY_SFTP_GLOBAL_BOOKMARKS,
   STORAGE_KEY_CUSTOM_THEMES,
-  STORAGE_KEY_IMMERSIVE_MODE,
+  STORAGE_KEY_SHOW_RECENT_HOSTS,
 } from '../infrastructure/config/storageKeys';
 
 // ---------------------------------------------------------------------------
@@ -57,6 +58,7 @@ export interface SyncableVaultData {
   customGroups: string[];
   snippetPackages?: string[];
   knownHosts: KnownHost[];
+  groupConfigs?: GroupConfig[];
 }
 
 /** Callbacks used by `applySyncPayload` to import data into local state. */
@@ -168,9 +170,9 @@ export function collectSyncableSettings(): SyncPayload['settings'] {
   const globalBookmarks = localStorageAdapter.read<SftpBookmark[]>(STORAGE_KEY_SFTP_GLOBAL_BOOKMARKS);
   if (globalBookmarks && Array.isArray(globalBookmarks)) settings.sftpGlobalBookmarks = globalBookmarks;
 
-  // Immersive mode
-  const immersive = localStorageAdapter.readString(STORAGE_KEY_IMMERSIVE_MODE);
-  if (immersive === 'true' || immersive === 'false') settings.immersiveMode = immersive === 'true';
+
+  const showRecent = localStorageAdapter.readBoolean(STORAGE_KEY_SHOW_RECENT_HOSTS);
+  if (showRecent != null) settings.showRecentHosts = showRecent;
 
   return Object.keys(settings).length > 0 ? settings : undefined;
 }
@@ -234,8 +236,8 @@ function applySyncableSettings(settings: NonNullable<SyncPayload['settings']>):
   // SFTP Bookmarks (global only)
   if (settings.sftpGlobalBookmarks != null) localStorageAdapter.write(STORAGE_KEY_SFTP_GLOBAL_BOOKMARKS, settings.sftpGlobalBookmarks);
 
-  // Immersive mode
-  if (settings.immersiveMode != null) localStorageAdapter.writeString(STORAGE_KEY_IMMERSIVE_MODE, String(settings.immersiveMode));
+  // Immersive mode (legacy — always enabled, ignore incoming value)
+  if (settings.showRecentHosts != null) localStorageAdapter.writeBoolean(STORAGE_KEY_SHOW_RECENT_HOSTS, settings.showRecentHosts);
 }
 
 // ---------------------------------------------------------------------------
@@ -261,6 +263,7 @@ export function buildSyncPayload(
     customGroups: vault.customGroups,
     snippetPackages: vault.snippetPackages,
     knownHosts: vault.knownHosts,
+    groupConfigs: vault.groupConfigs,
     portForwardingRules,
     settings: collectSyncableSettings(),
     syncedAt: Date.now(),
@@ -294,6 +297,9 @@ export function applySyncPayload(
   if (payload.knownHosts !== undefined) {
     vaultImport.knownHosts = payload.knownHosts;
   }
+  if (Array.isArray(payload.groupConfigs)) {
+    vaultImport.groupConfigs = payload.groupConfigs;
+  }
 
   importers.importVaultData(JSON.stringify(vaultImport));
 

components/AIChatSidePanel.tsx

@@ -22,6 +22,7 @@ import { useWindowControls } from '../application/state/useWindowControls';
 import { useFileUpload } from '../application/state/useFileUpload';
 import type {
   AIPermissionMode,
+  AIToolIntegrationMode,
   AISession,
   AISessionScope,
   ChatMessage,
@@ -38,11 +39,29 @@ import AgentSelector from './ai/AgentSelector';
 import ChatInput from './ai/ChatInput';
 import ChatMessageList from './ai/ChatMessageList';
 import ConversationExport from './ai/ConversationExport';
-import { useAIChatStreaming, getNetcattyBridge } from './ai/hooks/useAIChatStreaming';
+import {
+  useAIChatStreaming,
+  getNetcattyBridge,
+  type DefaultTargetSessionHint,
+} from './ai/hooks/useAIChatStreaming';
 import { clearAllPendingApprovals } from '../infrastructure/ai/shared/approvalGate';
 import { useConversationExport } from './ai/hooks/useConversationExport';
 import type { ExecutorContext } from '../infrastructure/ai/cattyAgent/executor';
 
+function isCopilotAgentConfig(agent?: ExternalAgentConfig): boolean {
+  if (!agent) return false;
+  const tokens = [
+    agent.id,
+    agent.name,
+    agent.icon,
+    agent.command,
+    agent.acpCommand,
+  ]
+    .filter((value): value is string => typeof value === 'string' && value.length > 0)
+    .map((value) => value.split('/').pop()?.toLowerCase() ?? value.toLowerCase());
+  return tokens.some((token) => token.includes('copilot'));
+}
+
 // -------------------------------------------------------------------
 // Props
 // -------------------------------------------------------------------
@@ -74,6 +93,7 @@ interface AIChatSidePanelProps {
 
   // Agent info
   defaultAgentId: string;
+  toolIntegrationMode: AIToolIntegrationMode;
   externalAgents: ExternalAgentConfig[];
   setExternalAgents?: (value: ExternalAgentConfig[] | ((prev: ExternalAgentConfig[]) => ExternalAgentConfig[])) => void;
   agentModelMap: Record<string, string>;
@@ -195,6 +215,7 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
   activeProviderId,
   activeModelId,
   defaultAgentId,
+  toolIntegrationMode,
   externalAgents,
   setExternalAgents,
   agentModelMap,
@@ -226,6 +247,7 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
 
   const [showHistory, setShowHistory] = useState(false);
   const [currentAgentId, setCurrentAgentId] = useState(defaultAgentId);
+  const [runtimeAgentModelPresets, setRuntimeAgentModelPresets] = useState<Record<string, ReturnType<typeof getAgentModelPresets>>>({});
 
   const { files, addFiles, removeFile, clearFiles } = useFileUpload();
   const { openSettingsWindow } = useWindowControls();
@@ -290,6 +312,29 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
     return historySessions[0] ?? null;
   }, [sessions, activeSessionIdForScope, historySessions, scopeType, scopeTargetId, scopeHostIds, activeTerminalTargetIds]);
 
+  const defaultTargetSession = useMemo<DefaultTargetSessionHint | undefined>(() => {
+    const connectedSessions = terminalSessions.filter((session) => session.connected !== false);
+
+    if (scopeType === 'terminal' && scopeTargetId) {
+      const target = terminalSessions.find((session) => session.sessionId === scopeTargetId);
+      if (target) {
+        return {
+          ...target,
+          source: 'scope-target',
+        };
+      }
+    }
+
+    if (connectedSessions.length === 1) {
+      return {
+        ...connectedSessions[0],
+        source: 'only-connected-in-scope',
+      };
+    }
+
+    return undefined;
+  }, [terminalSessions, scopeType, scopeTargetId]);
+
   const activeSessionId = activeSession?.id ?? activeSessionIdForScope;
   const isStreaming = activeSessionId ? streamingSessionIds.has(activeSessionId) : false;
 
@@ -431,9 +476,53 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
     () => currentAgentId !== 'catty' ? externalAgents.find(a => a.id === currentAgentId) : undefined,
     [currentAgentId, externalAgents],
   );
+  const isCopilotExternalAgent = useMemo(
+    () => isCopilotAgentConfig(currentAgentConfig),
+    [currentAgentConfig],
+  );
+
+  const agentModelMapRef = useRef(agentModelMap);
+  agentModelMapRef.current = agentModelMap;
+
+  useEffect(() => {
+    if (!currentAgentConfig?.acpCommand) return;
+    if (!isCopilotExternalAgent) return;
+
+    const bridge = getNetcattyBridge();
+    if (!bridge?.aiAcpListModels) return;
+
+    let cancelled = false;
+    void bridge.aiAcpListModels(
+      currentAgentConfig.acpCommand,
+      currentAgentConfig.acpArgs || [],
+      undefined,
+      undefined,
+      `models_${currentAgentId}`,
+    ).then((result) => {
+      if (cancelled || !result?.ok || !Array.isArray(result.models)) return;
+      const knownModelIds = new Set(result.models.map((model) => model.id));
+      setRuntimeAgentModelPresets((prev) => ({
+        ...prev,
+        [currentAgentId]: result.models ?? [],
+      }));
+      const storedModelId = agentModelMapRef.current[currentAgentId];
+      if (result.currentModelId && (!storedModelId || !knownModelIds.has(storedModelId))) {
+        setAgentModel(currentAgentId, result.currentModelId);
+      }
+    }).catch((err) => {
+      if (!cancelled) {
+        console.warn('[AIChatSidePanel] Failed to load ACP agent models:', err);
+      }
+    });
+
+    return () => {
+      cancelled = true;
+    };
+  }, [currentAgentConfig, currentAgentId, isCopilotExternalAgent, setAgentModel]);
+
   const agentModelPresets = useMemo(
-    () => getAgentModelPresets(currentAgentConfig?.command),
-    [currentAgentConfig?.command],
+    () => runtimeAgentModelPresets[currentAgentId] ?? getAgentModelPresets(currentAgentConfig?.command),
+    [currentAgentConfig?.command, currentAgentId, runtimeAgentModelPresets],
   );
 
   // Per-agent model: recall last selection or use first preset as default
@@ -593,7 +682,9 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
     const assistantMsgId = generateId();
     addMessageToSession(sessionId, {
       id: assistantMsgId, role: 'assistant', content: '', timestamp: Date.now(),
-      model: isExternalAgent ? (agentConfig?.name || 'external') : (activeModelId || activeProvider?.defaultModel || ''),
+      model: isExternalAgent
+        ? (selectedAgentModel || agentConfig?.name || 'external')
+        : (activeModelId || activeProvider?.defaultModel || ''),
       providerId: isExternalAgent ? undefined : activeProvider?.providerId,
     });
 
@@ -613,8 +704,10 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
           updateExternalSessionId: updateSessionExternalSessionId,
           historyMessages: buildAcpHistoryMessages(currentSession?.messages ?? []),
           terminalSessions,
+          defaultTargetSession,
           providers,
           selectedAgentModel,
+          toolIntegrationMode,
         });
       } catch (err) {
         reportStreamError(sessionId, abortController.signal, err);
@@ -650,8 +743,9 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
     ensureSession, addMessageToSession, updateMessageById, updateLastMessage,
     setStreamingForScope, setInputValue, clearFiles,
     sendToExternalAgent, sendToCattyAgent, reportStreamError, autoTitleSession, t,
-    abortControllersRef, terminalSessions, providers, selectedAgentModel, updateSessionExternalSessionId,
+    abortControllersRef, terminalSessions, defaultTargetSession, providers, selectedAgentModel, updateSessionExternalSessionId,
     scopeType, scopeTargetId, scopeLabel, globalPermissionMode, commandBlocklist, webSearchConfig, buildExecutorContextForScope,
+    toolIntegrationMode,
   ]);
 
   const handleStop = useCallback(() => {
@@ -711,7 +805,7 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
   if (!isVisible) return null;
 
   return (
-    <div className="flex flex-col h-full bg-background">
+    <div className="flex flex-col h-full bg-background" data-section="ai-chat-panel">
       {/* ── Header ── */}
       <div className="px-2.5 py-1.5 flex items-center justify-between border-b border-border/50 shrink-0">
         <AgentSelector

components/CloudSyncSettings.tsx

@@ -22,6 +22,7 @@ import {
     Github,
     Key,
     Loader2,
+    History,
     RefreshCw,
     Settings,
     Server,
@@ -285,6 +286,7 @@ interface ProviderCardProps {
     onCancelConnect?: () => void;
     onDisconnect: () => void;
     onSync: () => void;
+    extraActions?: React.ReactNode;
 }
 
 const ProviderCard: React.FC<ProviderCardProps> = ({
@@ -303,6 +305,7 @@ const ProviderCard: React.FC<ProviderCardProps> = ({
     onCancelConnect,
     onDisconnect,
     onSync,
+    extraActions,
 }) => {
     const { t } = useI18n();
     const formatLastSync = (timestamp?: number): string => {
@@ -395,6 +398,7 @@ const ProviderCard: React.FC<ProviderCardProps> = ({
                             )}
                             {t('cloudSync.provider.sync')}
                         </Button>
+                        {extraActions}
                         {onEdit && (
                             <Button
                                 size="sm"
@@ -715,6 +719,20 @@ const SyncDashboard: React.FC<SyncDashboardProps> = ({
     // Conflict modal
     const [showConflictModal, setShowConflictModal] = useState(false);
 
+    // Gist revision history (#679)
+    const [showHistoryModal, setShowHistoryModal] = useState(false);
+    const [historyRevisions, setHistoryRevisions] = useState<Array<{ version: string; date: Date }>>([]);
+    const [historyLoading, setHistoryLoading] = useState(false);
+    const [historyPreview, setHistoryPreview] = useState<{
+      sha: string;
+      payload: SyncPayload;
+      preview: { hostCount: number; keyCount: number; snippetCount: number; identityCount: number; portForwardingRuleCount: number };
+      deviceName?: string;
+      version?: number;
+    } | null>(null);
+    const [historyPreviewLoading, setHistoryPreviewLoading] = useState(false);
+    const [historyError, setHistoryError] = useState<string | null>(null);
+
     // Change master key dialog
     const [showChangeKeyDialog, setShowChangeKeyDialog] = useState(false);
     const [currentMasterKey, setCurrentMasterKey] = useState('');
@@ -1030,6 +1048,60 @@ const SyncDashboard: React.FC<SyncDashboardProps> = ({
         }
     };
 
+    // -- Gist revision history handlers --
+
+    const handleOpenHistory = async () => {
+        setShowHistoryModal(true);
+        setHistoryLoading(true);
+        setHistoryError(null);
+        setHistoryPreview(null);
+        setHistoryRevisions([]);
+        try {
+            const revisions = await sync.getGistRevisionHistory();
+            setHistoryRevisions(revisions);
+        } catch (err) {
+            setHistoryError(err instanceof Error ? err.message : t('common.unknownError'));
+        } finally {
+            setHistoryLoading(false);
+        }
+    };
+
+    const handlePreviewRevision = async (sha: string) => {
+        setHistoryPreviewLoading(true);
+        setHistoryError(null);
+        try {
+            const result = await sync.downloadGistRevision(sha);
+            if (result) {
+                setHistoryPreview({
+                    sha,
+                    payload: result.payload,
+                    preview: result.preview,
+                    deviceName: result.meta.deviceName,
+                    version: result.meta.version,
+                });
+            } else {
+                setHistoryError(t('cloudSync.revisionHistory.revisionNotFound'));
+            }
+        } catch {
+            // Decrypt failures can manifest as various error types:
+            // "Decryption failed", OperationError, "unable to authenticate
+            // data", AES-GCM tag mismatch, etc. Show the friendly message
+            // for any error originating from the decrypt step; network
+            // errors would have been caught by the fetch layer already.
+            setHistoryError(t('cloudSync.revisionHistory.decryptFailed'));
+        } finally {
+            setHistoryPreviewLoading(false);
+        }
+    };
+
+    const handleRestoreRevision = () => {
+        if (!historyPreview) return;
+        onApplyPayload(historyPreview.payload);
+        toast.success(t('cloudSync.revisionHistory.restored'));
+        setShowHistoryModal(false);
+        setHistoryPreview(null);
+    };
+
     return (
         <div className="space-y-6">
             {/* Header with status */}
@@ -1091,6 +1163,14 @@ const SyncDashboard: React.FC<SyncDashboardProps> = ({
                         onConnect={handleConnectGitHub}
                         onDisconnect={() => sync.disconnectProvider('github')}
                         onSync={() => handleSync('github')}
+                        extraActions={
+                            isProviderReadyForSync(sync.providers.github) ? (
+                                <Button size="sm" variant="ghost" onClick={handleOpenHistory} className="gap-1">
+                                    <History size={14} />
+                                    {t('cloudSync.revisionHistory.viewButton')}
+                                </Button>
+                            ) : undefined
+                        }
                     />
 
                     <ProviderCard
@@ -1291,6 +1371,113 @@ const SyncDashboard: React.FC<SyncDashboardProps> = ({
                 onClose={() => setShowConflictModal(false)}
             />
 
+            {/* Gist Revision History Modal (#679) */}
+            <Dialog open={showHistoryModal} onOpenChange={setShowHistoryModal}>
+                <DialogContent className="sm:max-w-[520px] max-h-[80vh] overflow-hidden flex flex-col z-[70]">
+                    <DialogHeader>
+                        <DialogTitle className="flex items-center gap-2">
+                            <History size={18} />
+                            {t('cloudSync.revisionHistory.title')}
+                        </DialogTitle>
+                        <DialogDescription>{t('cloudSync.revisionHistory.description')}</DialogDescription>
+                    </DialogHeader>
+
+                    {historyError && (
+                        <div className="rounded-lg bg-red-500/10 border border-red-500/20 p-3 text-sm text-red-500">
+                            {historyError}
+                        </div>
+                    )}
+
+                    {historyLoading ? (
+                        <div className="flex items-center justify-center py-8">
+                            <Loader2 size={24} className="animate-spin text-muted-foreground" />
+                        </div>
+                    ) : historyPreview ? (
+                        // Preview of a selected revision
+                        <div className="space-y-4 overflow-y-auto flex-1 min-h-0">
+                            <div className="rounded-lg border p-4 space-y-2">
+                                <div className="text-sm font-medium">{t('cloudSync.revisionHistory.revisionPreview')}</div>
+                                {historyPreview.deviceName && (
+                                    <div className="text-xs text-muted-foreground">
+                                        {t('cloudSync.revisionHistory.device')}: {historyPreview.deviceName}
+                                        {historyPreview.version != null && ` · v${historyPreview.version}`}
+                                    </div>
+                                )}
+                                <div className="grid grid-cols-2 gap-2 text-sm">
+                                    <div className="flex justify-between px-2 py-1 bg-muted/30 rounded">
+                                        <span className="text-muted-foreground">{t('cloudSync.revisionHistory.hosts')}</span>
+                                        <span className="font-medium">{historyPreview.preview.hostCount}</span>
+                                    </div>
+                                    <div className="flex justify-between px-2 py-1 bg-muted/30 rounded">
+                                        <span className="text-muted-foreground">{t('cloudSync.revisionHistory.keys')}</span>
+                                        <span className="font-medium">{historyPreview.preview.keyCount}</span>
+                                    </div>
+                                    <div className="flex justify-between px-2 py-1 bg-muted/30 rounded">
+                                        <span className="text-muted-foreground">{t('cloudSync.revisionHistory.snippets')}</span>
+                                        <span className="font-medium">{historyPreview.preview.snippetCount}</span>
+                                    </div>
+                                    <div className="flex justify-between px-2 py-1 bg-muted/30 rounded">
+                                        <span className="text-muted-foreground">{t('cloudSync.revisionHistory.identities')}</span>
+                                        <span className="font-medium">{historyPreview.preview.identityCount}</span>
+                                    </div>
+                                </div>
+                            </div>
+                            <DialogFooter className="gap-2">
+                                <Button variant="outline" onClick={() => setHistoryPreview(null)}>
+                                    {t('common.back')}
+                                </Button>
+                                <Button onClick={handleRestoreRevision} className="gap-1">
+                                    <Download size={14} />
+                                    {t('cloudSync.revisionHistory.restoreButton')}
+                                </Button>
+                            </DialogFooter>
+                        </div>
+                    ) : (
+                        // Revision list
+                        <div className="overflow-y-auto flex-1 min-h-0 -mx-1">
+                            {historyRevisions.length === 0 ? (
+                                <div className="text-sm text-muted-foreground text-center py-8">
+                                    {t('cloudSync.revisionHistory.empty')}
+                                </div>
+                            ) : (
+                                <div className="space-y-1 px-1">
+                                    {historyRevisions.map((rev, index) => (
+                                        <button
+                                            key={rev.version}
+                                            onClick={() => handlePreviewRevision(rev.version)}
+                                            disabled={historyPreviewLoading}
+                                            className={cn(
+                                                "w-full flex items-center justify-between p-2.5 rounded-lg text-left text-sm transition-colors",
+                                                "hover:bg-accent border border-transparent hover:border-border",
+                                                index === 0 && "bg-primary/5 border-primary/20",
+                                            )}
+                                        >
+                                            <div>
+                                                <div className="font-medium">
+                                                    {index === 0 ? t('cloudSync.revisionHistory.current') : `${t('cloudSync.revisionHistory.revision')} #${historyRevisions.length - index}`}
+                                                </div>
+                                                <div className="text-xs text-muted-foreground">
+                                                    {rev.date.toLocaleString()}
+                                                </div>
+                                            </div>
+                                            <div className="text-xs text-muted-foreground font-mono">
+                                                {rev.version.slice(0, 7)}
+                                            </div>
+                                        </button>
+                                    ))}
+                                </div>
+                            )}
+                        </div>
+                    )}
+
+                    {historyPreviewLoading && (
+                        <div className="absolute inset-0 bg-background/50 flex items-center justify-center rounded-lg">
+                            <Loader2 size={24} className="animate-spin" />
+                        </div>
+                    )}
+                </DialogContent>
+            </Dialog>
+
             <Dialog open={showWebdavDialog} onOpenChange={setShowWebdavDialog}>
                 <DialogContent className="sm:max-w-[460px] max-h-[80vh] overflow-y-auto z-[70]">
                     <DialogHeader>

components/DistroAvatar.tsx

@@ -22,6 +22,16 @@ export const DISTRO_LOGOS: Record<string, string> = {
   macos: "/distro/macos.svg",
   windows: "/distro/windows.svg",
   linux: "/distro/linux.svg",
+  // Network device vendors — auto-detected from the SSH server
+  // identification string (see domain/host.ts `detectVendorFromSshVersion`).
+  cisco: "/distro/cisco.svg",
+  juniper: "/distro/juniper.svg",
+  huawei: "/distro/huawei.svg",
+  hpe: "/distro/hpe.svg",
+  mikrotik: "/distro/mikrotik.svg",
+  fortinet: "/distro/fortinet.svg",
+  paloalto: "/distro/paloalto.svg",
+  zyxel: "/distro/zyxel.svg",
 };
 
 export const DISTRO_COLORS: Record<string, string> = {
@@ -42,6 +52,15 @@ export const DISTRO_COLORS: Record<string, string> = {
   macos: "bg-[#333333]",
   windows: "bg-[#0078D4]",
   linux: "bg-[#333333]",
+  // Network device vendor brand colors
+  cisco: "bg-[#1BA0D7]",
+  juniper: "bg-[#0A6EB4]",
+  huawei: "bg-[#CF0A2C]",
+  hpe: "bg-[#01A982]",
+  mikrotik: "bg-[#293239]",
+  fortinet: "bg-[#EE3124]",
+  paloalto: "bg-[#FA582D]",
+  zyxel: "bg-[#00497A]",
   default: "bg-slate-600",
 };
 
@@ -65,8 +84,8 @@ const DistroAvatarInner: React.FC<DistroAvatarProps> = ({
 
   // Size variants - all use rounded corners for consistency
   const sizeClasses = {
-    sm: "h-6 w-6 rounded-md",
-    md: "h-11 w-11 rounded-xl",
+    sm: "h-6 w-6 rounded",
+    md: "h-11 w-11 rounded-lg",
     lg: "h-14 w-14 rounded-xl",
   };
   const iconSizes = {
@@ -98,7 +117,7 @@ const DistroAvatarInner: React.FC<DistroAvatarProps> = ({
       <div
         className={cn(
           containerClass,
-          "flex items-center justify-center border border-border/40 overflow-hidden",
+          "flex items-center justify-center overflow-hidden",
           bg,
           className,
         )}

components/HostDetailsPanel.tsx

@@ -31,7 +31,12 @@ import {
 import React, { useEffect, useMemo, useState, useCallback } from "react";
 import { useI18n } from "../application/i18n/I18nProvider";
 import { useApplicationBackend } from "../application/state/useApplicationBackend";
-import { getEffectiveHostDistro, LINUX_DISTRO_OPTIONS } from "../domain/host";
+import { resolveGroupDefaults, resolveGroupTerminalThemeId } from "../domain/groupConfig";
+import {
+  getEffectiveHostDistro,
+  LINUX_DISTRO_OPTIONS,
+  NETWORK_DEVICE_OPTIONS,
+} from "../domain/host";
 import { customThemeStore } from "../application/state/customThemeStore";
 import {
   clearHostFontSizeOverride,
@@ -43,7 +48,7 @@ import {
 } from "../domain/terminalAppearance";
 import { MIN_FONT_SIZE, MAX_FONT_SIZE } from "../infrastructure/config/fonts";
 import { cn } from "../lib/utils";
-import { EnvVar, Host, Identity, ManagedSource, ProxyConfig, SSHKey } from "../types";
+import { EnvVar, GroupConfig, Host, Identity, ManagedSource, ProxyConfig, SSHKey } from "../types";
 import { DISTRO_COLORS, DISTRO_LOGOS } from "./DistroAvatar";
 import { DistroAvatar } from "./DistroAvatar";
 import ThemeSelectPanel from "./ThemeSelectPanel";
@@ -51,6 +56,7 @@ import {
   AsidePanel,
   AsidePanelContent,
   AsidePanelFooter,
+  type AsidePanelLayout,
 } from "./ui/aside-panel";
 import { Badge } from "./ui/badge";
 import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from "./ui/tooltip";
@@ -82,7 +88,10 @@ type SubPanel =
   | "theme-select"
   | "telnet-theme-select";
 
-const LINUX_DISTRO_OPTION_IDS = [...LINUX_DISTRO_OPTIONS];
+const LINUX_DISTRO_OPTION_IDS = [
+  ...LINUX_DISTRO_OPTIONS,
+  ...NETWORK_DEVICE_OPTIONS,
+];
 
 interface HostDetailsPanelProps {
   initialData?: Host | null;
@@ -99,6 +108,9 @@ interface HostDetailsPanelProps {
   onCancel: () => void;
   onCreateGroup?: (groupPath: string) => void; // Callback to create a new group
   onCreateTag?: (tag: string) => void; // Callback to create a new tag
+  groupDefaults?: Partial<import('../domain/models').GroupConfig>;
+  groupConfigs?: GroupConfig[];
+  layout?: AsidePanelLayout;
 }
 
 const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
@@ -116,6 +128,9 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
   onCancel,
   onCreateGroup,
   onCreateTag,
+  groupDefaults,
+  groupConfigs = [],
+  layout = "overlay",
 }) => {
   const { t } = useI18n();
   const { checkSshAgent } = useApplicationBackend();
@@ -126,13 +141,13 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         id: crypto.randomUUID(),
         label: "",
         hostname: "",
-        port: 22,
-        username: "root",
+        port: groupDefaults?.port ? undefined : 22,
+        username: groupDefaults?.username ? "" : "root",
         protocol: "ssh",
         tags: [],
         os: "linux",
         authMethod: "password",
-        charset: "UTF-8",
+        charset: groupDefaults?.charset ? undefined : "UTF-8",
         distroMode: "auto",
         createdAt: Date.now(),
         group: defaultGroup || undefined, // Pre-fill with current navigation group
@@ -199,9 +214,17 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
     setForm((prev) => ({ ...prev, [key]: value }));
   };
 
+  const effectiveGroupDefaults = useMemo(() => {
+    const currentGroupPath = form.group || defaultGroup;
+    if (currentGroupPath && groupConfigs.length > 0) {
+      return resolveGroupDefaults(currentGroupPath, groupConfigs);
+    }
+    return groupDefaults;
+  }, [defaultGroup, form.group, groupConfigs, groupDefaults]);
+
   const effectiveThemeId = useMemo(
-    () => resolveHostTerminalThemeId(form, terminalThemeId),
-    [form, terminalThemeId],
+    () => resolveHostTerminalThemeId(form, resolveGroupTerminalThemeId(effectiveGroupDefaults, terminalThemeId)),
+    [effectiveGroupDefaults, form, terminalThemeId],
   );
   const effectiveFontSize = useMemo(
     () => resolveHostTerminalFontSize(form, terminalFontSize),
@@ -282,12 +305,10 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
   };
 
   const removeHostFromChain = (index: number) => {
-    setForm((prev) => ({
-      ...prev,
-      hostChain: {
-        hostIds: (prev.hostChain?.hostIds || []).filter((_, i) => i !== index),
-      },
-    }));
+    setForm((prev) => {
+      const ids = (prev.hostChain?.hostIds || []).filter((_, i) => i !== index);
+      return { ...prev, hostChain: ids.length > 0 ? { hostIds: ids } : undefined };
+    });
   };
 
   const clearHostChain = useCallback(() => {
@@ -313,12 +334,10 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
   };
 
   const removeEnvVar = (index: number) => {
-    setForm((prev) => ({
-      ...prev,
-      environmentVariables: (prev.environmentVariables || []).filter(
-        (_, i) => i !== index,
-      ),
-    }));
+    setForm((prev) => {
+      const filtered = (prev.environmentVariables || []).filter((_, i) => i !== index);
+      return { ...prev, environmentVariables: filtered.length > 0 ? filtered : undefined };
+    });
   };
 
   const handleSubmit = () => {
@@ -363,7 +382,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
       label: finalLabel,
       group: finalGroup,
       tags: form.tags || [],
-      port: form.port || 22,
+      port: form.port ?? (groupDefaults?.port ? undefined : 22),
       // Clear password if savePassword is explicitly set to false
       password: form.savePassword === false ? undefined : form.password,
       managedSourceId: finalManagedSourceId,
@@ -504,6 +523,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         onSave={handleCreateGroup}
         onBack={() => setActiveSubPanel("none")}
         onCancel={onCancel}
+        layout={layout}
       />
     );
   }
@@ -516,6 +536,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         onClearProxy={clearProxyConfig}
         onBack={() => setActiveSubPanel("none")}
         onCancel={onCancel}
+        layout={layout}
       />
     );
   }
@@ -533,6 +554,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         onClearChain={clearHostChain}
         onBack={() => setActiveSubPanel("none")}
         onCancel={onCancel}
+        layout={layout}
       />
     );
   }
@@ -561,6 +583,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         }}
         onBack={() => setActiveSubPanel("none")}
         onCancel={onCancel}
+        layout={layout}
       />
     );
   }
@@ -572,12 +595,17 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         open={true}
         selectedThemeId={effectiveThemeId}
         onSelect={(themeId) => {
+          if (themeId === effectiveThemeId && !hasEffectiveThemeOverride) {
+            setActiveSubPanel("none");
+            return;
+          }
           setForm((prev) => ({ ...prev, theme: themeId, themeOverride: true }));
           setActiveSubPanel("none");
         }}
         onClose={onCancel}
         onBack={() => setActiveSubPanel("none")}
         showBackButton={true}
+        layout={layout}
       />
     );
   }
@@ -616,6 +644,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
         onClose={onCancel}
         onBack={() => setActiveSubPanel("none")}
         showBackButton={true}
+        layout={layout}
       />
     );
   }
@@ -626,6 +655,8 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
       open={true}
       onClose={onCancel}
       width="w-[420px]"
+      layout={layout}
+      dataSection="host-details-panel"
       title={
         initialData ? t("hostDetails.title.details") : t("hostDetails.title.new")
       }
@@ -752,8 +783,9 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
               <div className="ml-auto w-1/2 min-w-0 flex items-center gap-2 justify-end">
                 <Input
                   type="number"
-                  value={form.port}
-                  onChange={(e) => update("port", Number(e.target.value))}
+                  value={form.port ?? ""}
+                  onChange={(e) => update("port", e.target.value ? Number(e.target.value) : undefined)}
+                  placeholder={groupDefaults?.port ? String(groupDefaults.port) : "22"}
                   className="h-8 flex-1 min-w-0 text-center"
                 />
                 <span className="text-xs text-muted-foreground">
@@ -805,7 +837,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                 if (!hasIdentities) {
                   return (
                     <Input
-                      placeholder={t("hostDetails.username.placeholder")}
+                      placeholder={groupDefaults?.username || t("hostDetails.username.placeholder")}
                       value={form.username}
                       onChange={(e) => update("username", e.target.value)}
                       className="h-10"
@@ -824,7 +856,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                     <PopoverTrigger asChild>
                       <div className="relative">
                         <Input
-                          placeholder={t("hostDetails.username.placeholder")}
+                          placeholder={groupDefaults?.username || t("hostDetails.username.placeholder")}
                           value={form.username}
                           onChange={(e) => {
                             const next = e.target.value;
@@ -1263,18 +1295,20 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
               {t("hostDetails.sftp.sudo.passwordWarning")}
             </p>
           )}
-          <div className="space-y-1">
-            <div className="text-sm font-medium">
-              {t("hostDetails.sftp.encoding")}
-            </div>
-            <div className="text-xs text-muted-foreground">
-              {t("hostDetails.sftp.encoding.desc")}
+          <div className="flex items-center justify-between gap-4">
+            <div className="space-y-0.5">
+              <div className="text-sm font-medium">
+                {t("hostDetails.sftp.encoding")}
+              </div>
+              <div className="text-xs text-muted-foreground">
+                {t("hostDetails.sftp.encoding.desc")}
+              </div>
             </div>
             <Select
               value={form.sftpEncoding || "auto"}
               onValueChange={(val) => update("sftpEncoding", val as Host["sftpEncoding"])}
             >
-              <SelectTrigger className="h-8">
+              <SelectTrigger className="h-8 w-28">
                 <SelectValue placeholder={t("sftp.encoding.label")} />
               </SelectTrigger>
               <SelectContent>
@@ -1286,6 +1320,111 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
           </div>
         </Card>
 
+        {form.os === "linux" && (
+          <Card className="p-3 space-y-3 bg-card border-border/80">
+            <div className="flex items-center gap-2">
+              <img src="/distro/linux.svg" alt="Linux" className="h-3.5 w-3.5 opacity-70 dark:invert" />
+              <p className="text-xs font-semibold">{t("hostDetails.distro.title")}</p>
+            </div>
+            <p className="text-xs text-muted-foreground">{t("hostDetails.distro.desc")}</p>
+
+            <div className="grid gap-2 md:grid-cols-2">
+              <div className="space-y-1">
+                <span className="text-xs text-muted-foreground">{t("hostDetails.distro.mode")}</span>
+                <Select
+                  value={form.distroMode || "auto"}
+                  onValueChange={(val) => handleDistroModeChange(val as "auto" | "manual")}
+                >
+                  <SelectTrigger className="h-8" aria-label={t("hostDetails.distro.mode")}>
+                    <span className="truncate whitespace-nowrap pr-2 text-left">
+                      {form.distroMode === "manual"
+                        ? t("hostDetails.distro.mode.manual")
+                        : t("hostDetails.distro.mode.auto")}
+                    </span>
+                  </SelectTrigger>
+                  <SelectContent>
+                    <SelectItem value="auto">{t("hostDetails.distro.mode.auto")}</SelectItem>
+                    <SelectItem value="manual">{t("hostDetails.distro.mode.manual")}</SelectItem>
+                  </SelectContent>
+                </Select>
+              </div>
+
+              {form.distroMode === "manual" ? (
+                <div className="space-y-1">
+                  <span className="text-xs text-muted-foreground">{t("hostDetails.distro.manualLabel")}</span>
+                  <Select
+                    value={form.manualDistro}
+                    onValueChange={(val) => update("manualDistro", val)}
+                  >
+                    <SelectTrigger className="h-8" aria-label={t("hostDetails.distro.manualLabel")}>
+                      {(() => {
+                        const selectedOption = distroOptions.find((option) => option.value === form.manualDistro);
+                        return selectedOption ? (
+                          <div className="flex min-w-0 items-center gap-2 pr-2">
+                            <div
+                              className={cn(
+                                "flex h-4 w-4 shrink-0 items-center justify-center overflow-hidden rounded-[2px]",
+                                selectedOption.bgClass,
+                              )}
+                            >
+                              {selectedOption.icon ? (
+                                <img
+                                  src={selectedOption.icon}
+                                  alt={selectedOption.label}
+                                  className="h-3 w-3 object-contain invert brightness-0"
+                                />
+                              ) : (
+                                <div className="h-2 w-2 rounded-full bg-white/70" />
+                              )}
+                            </div>
+                            <span className="truncate whitespace-nowrap">{selectedOption.label}</span>
+                          </div>
+                        ) : (
+                          <SelectValue placeholder={t("hostDetails.distro.unknown")} />
+                        );
+                      })()}
+                    </SelectTrigger>
+                    <SelectContent className="min-w-[14rem]">
+                      {distroOptions.map((option) => (
+                        <SelectItem key={option.value} value={option.value}>
+                          <div className="flex items-center gap-2">
+                            <div
+                              className={cn(
+                                "flex h-4 w-4 shrink-0 items-center justify-center overflow-hidden rounded-[2px]",
+                                option.bgClass,
+                              )}
+                            >
+                              {option.icon ? (
+                                <img
+                                  src={option.icon}
+                                  alt={option.label}
+                                  className="h-3 w-3 object-contain invert brightness-0"
+                                />
+                              ) : (
+                                <div className="h-2 w-2 rounded-full bg-white/70" />
+                              )}
+                            </div>
+                            <span className="whitespace-nowrap">{option.label}</span>
+                          </div>
+                        </SelectItem>
+                      ))}
+                    </SelectContent>
+                  </Select>
+                </div>
+              ) : (
+                <div className="space-y-1">
+                  <span className="text-xs text-muted-foreground">{t("hostDetails.distro.detectedLabel")}</span>
+                  <div className="flex h-8 items-center rounded-md border border-border/60 bg-background/50 px-3 text-sm">
+                    {effectiveFormDistro
+                      ? getDistroOptionLabel(effectiveFormDistro)
+                      : t("hostDetails.distro.unknown")}
+                  </div>
+                </div>
+              )}
+            </div>
+          </Card>
+        )}
+
         <Card className="p-3 space-y-3 bg-card border-border/80">
           <div className="flex items-center gap-2">
             <Palette size={14} className="text-muted-foreground" />
@@ -1294,113 +1433,6 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
             </p>
           </div>
 
-          {form.os === "linux" && (
-            <div className="space-y-2 rounded-lg border border-border/70 bg-secondary/30 p-3">
-              <div className="flex items-start gap-2">
-                <Globe size={14} className="mt-0.5 text-muted-foreground" />
-                <div className="space-y-0.5">
-                  <p className="text-xs font-semibold">{t("hostDetails.distro.title")}</p>
-                  <p className="text-xs text-muted-foreground">{t("hostDetails.distro.desc")}</p>
-                </div>
-              </div>
-
-              <div className="grid gap-2 md:grid-cols-2">
-                <div className="space-y-1">
-                  <span className="text-xs text-muted-foreground">{t("hostDetails.distro.mode")}</span>
-                  <Select
-                    value={form.distroMode || "auto"}
-                    onValueChange={(val) => handleDistroModeChange(val as "auto" | "manual")}
-                  >
-                    <SelectTrigger className="h-8" aria-label={t("hostDetails.distro.mode")}>
-                      <span className="truncate whitespace-nowrap pr-2 text-left">
-                        {form.distroMode === "manual"
-                          ? t("hostDetails.distro.mode.manual")
-                          : t("hostDetails.distro.mode.auto")}
-                      </span>
-                    </SelectTrigger>
-                    <SelectContent>
-                      <SelectItem value="auto">{t("hostDetails.distro.mode.auto")}</SelectItem>
-                      <SelectItem value="manual">{t("hostDetails.distro.mode.manual")}</SelectItem>
-                    </SelectContent>
-                  </Select>
-                </div>
-
-                {form.distroMode === "manual" ? (
-                  <div className="space-y-1">
-                    <span className="text-xs text-muted-foreground">{t("hostDetails.distro.manualLabel")}</span>
-                    <Select
-                      value={form.manualDistro}
-                      onValueChange={(val) => update("manualDistro", val)}
-                    >
-                      <SelectTrigger className="h-8" aria-label={t("hostDetails.distro.manualLabel")}>
-                        {(() => {
-                          const selectedOption = distroOptions.find((option) => option.value === form.manualDistro);
-                          return selectedOption ? (
-                            <div className="flex min-w-0 items-center gap-2 pr-2">
-                              <div
-                                className={cn(
-                                  "flex h-4 w-4 shrink-0 items-center justify-center overflow-hidden rounded-[2px]",
-                                  selectedOption.bgClass,
-                                )}
-                              >
-                                {selectedOption.icon ? (
-                                  <img
-                                    src={selectedOption.icon}
-                                    alt={selectedOption.label}
-                                    className="h-3 w-3 object-contain invert brightness-0"
-                                  />
-                                ) : (
-                                  <div className="h-2 w-2 rounded-full bg-white/70" />
-                                )}
-                              </div>
-                              <span className="truncate whitespace-nowrap">{selectedOption.label}</span>
-                            </div>
-                          ) : (
-                            <SelectValue placeholder={t("hostDetails.distro.unknown")} />
-                          );
-                        })()}
-                      </SelectTrigger>
-                      <SelectContent className="min-w-[14rem]">
-                        {distroOptions.map((option) => (
-                          <SelectItem key={option.value} value={option.value}>
-                            <div className="flex items-center gap-2">
-                              <div
-                                className={cn(
-                                  "flex h-4 w-4 shrink-0 items-center justify-center overflow-hidden rounded-[2px]",
-                                  option.bgClass,
-                                )}
-                              >
-                                {option.icon ? (
-                                  <img
-                                    src={option.icon}
-                                    alt={option.label}
-                                    className="h-3 w-3 object-contain invert brightness-0"
-                                  />
-                                ) : (
-                                  <div className="h-2 w-2 rounded-full bg-white/70" />
-                                )}
-                              </div>
-                              <span className="whitespace-nowrap">{option.label}</span>
-                            </div>
-                          </SelectItem>
-                        ))}
-                      </SelectContent>
-                    </Select>
-                  </div>
-                ) : (
-                  <div className="space-y-1">
-                    <span className="text-xs text-muted-foreground">{t("hostDetails.distro.detectedLabel")}</span>
-                    <div className="flex h-8 items-center rounded-md border border-border/60 bg-background/50 px-3 text-sm">
-                      {effectiveFormDistro
-                        ? getDistroOptionLabel(effectiveFormDistro)
-                        : t("hostDetails.distro.unknown")}
-                    </div>
-                  </div>
-                )}
-              </div>
-            </div>
-          )}
-
           {/* SSH Theme Selection */}
           <button
             type="button"
@@ -1606,6 +1638,17 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
               </p>
             </div>
           )}
+          <div className="flex items-center justify-between">
+            <p className="text-xs text-muted-foreground">{t("hostDetails.backspaceBehavior")}</p>
+            <select
+              className="h-8 rounded-md border border-input bg-background px-2 text-xs"
+              value={form.backspaceBehavior ?? ""}
+              onChange={(e) => update("backspaceBehavior", e.target.value || undefined)}
+            >
+              <option value="">{t("hostDetails.backspaceBehavior.default")}</option>
+              <option value="ctrl-h">^H (0x08)</option>
+            </select>
+          </div>
         </Card>
 
         {/* Proxy via Hosts (Jump Hosts / ProxyJump) */}
@@ -1755,7 +1798,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                 className="text-muted-foreground hover:text-destructive flex-shrink-0 ml-auto"
                 onClick={(e) => {
                   e.stopPropagation();
-                  setForm((prev) => ({ ...prev, environmentVariables: [] }));
+                  setForm((prev) => ({ ...prev, environmentVariables: undefined }));
                 }}
               />
             </button>
@@ -1778,7 +1821,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
             <p className="text-xs font-semibold">{t("hostDetails.startupCommand")}</p>
           </div>
           <Textarea
-            placeholder={t("hostDetails.startupCommand.placeholder")}
+            placeholder={groupDefaults?.startupCommand || t("hostDetails.startupCommand.placeholder")}
             value={form.startupCommand || ""}
             onChange={(e) => update("startupCommand", e.target.value)}
             className="min-h-[80px] font-mono text-sm"
@@ -1842,7 +1885,7 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
 
             {/* Telnet Charset */}
             <Input
-              placeholder={t("hostDetails.charset.placeholder")}
+              placeholder={groupDefaults?.charset || t("hostDetails.charset.placeholder")}
               value={form.charset || "UTF-8"}
               onChange={(e) => update("charset", e.target.value)}
               className="h-10"

components/HostTreeView.tsx

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

components/KeyboardInteractiveModal.tsx

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

components/KeychainManager.tsx

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

components/LogView.tsx

@@ -36,19 +36,35 @@ const LogViewComponent: React.FC<LogViewProps> = ({
     const [isReady, setIsReady] = useState(false);
     const [themeModalOpen, setThemeModalOpen] = useState(false);
     const [isExporting, setIsExporting] = useState(false);
+    const [previewTheme, setPreviewTheme] = useState<TerminalTheme | null>(null);
 
     // Subscribe to custom theme changes so editing triggers re-render
     const customThemes = useCustomThemes();
+    const explicitThemeId = useMemo(() => {
+        if (!log.themeId) return undefined;
+        const exists = TERMINAL_THEMES.some((theme) => theme.id === log.themeId)
+            || customThemes.some((theme) => theme.id === log.themeId);
+        return exists ? log.themeId : undefined;
+    }, [customThemes, log.themeId]);
+
+    useEffect(() => {
+        if (log.themeId && !explicitThemeId) {
+            onUpdateLog(log.id, { themeId: undefined });
+        }
+    }, [explicitThemeId, log.id, log.themeId, onUpdateLog]);
 
     // Use log's saved theme/fontSize or fall back to defaults
     const currentTheme = useMemo(() => {
-        if (log.themeId) {
-            return TERMINAL_THEMES.find(t => t.id === log.themeId)
-                || customThemes.find(t => t.id === log.themeId)
+        if (previewTheme) {
+            return previewTheme;
+        }
+        if (explicitThemeId) {
+            return TERMINAL_THEMES.find(t => t.id === explicitThemeId)
+                || customThemes.find(t => t.id === explicitThemeId)
                 || defaultTerminalTheme;
         }
         return defaultTerminalTheme;
-    }, [log.themeId, defaultTerminalTheme, customThemes]);
+    }, [customThemes, defaultTerminalTheme, explicitThemeId, previewTheme]);
 
     const currentFontSize = log.fontSize ?? defaultFontSize;
 
@@ -69,6 +85,12 @@ const LogViewComponent: React.FC<LogViewProps> = ({
         onUpdateLog(log.id, { themeId });
     }, [log.id, onUpdateLog]);
 
+    useEffect(() => {
+        if (!themeModalOpen) {
+            setPreviewTheme(null);
+        }
+    }, [themeModalOpen]);
+
     // Handle font size change
     const handleFontSizeChange = useCallback((fontSize: number) => {
         onUpdateLog(log.id, { fontSize });
@@ -295,10 +317,13 @@ const LogViewComponent: React.FC<LogViewProps> = ({
             <ThemeCustomizeModal
                 open={themeModalOpen}
                 onClose={() => setThemeModalOpen(false)}
-                currentThemeId={currentTheme.id}
+                currentThemeId={explicitThemeId}
+                displayThemeId={currentTheme.id}
                 currentFontSize={currentFontSize}
                 onThemeChange={handleThemeChange}
+                onThemeReset={() => onUpdateLog(log.id, { themeId: undefined })}
                 onFontSizeChange={handleFontSizeChange}
+                onPreviewThemeChange={setPreviewTheme}
             />
         </div>
     );

components/PortForwardingNew.tsx

@@ -14,12 +14,14 @@ import React, { useCallback, useState } from "react";
 import { useI18n } from "../application/i18n/I18nProvider";
 import { usePortForwardingState } from "../application/state/usePortForwardingState";
 import {
+  GroupConfig,
   Host,
   ManagedSource,
   PortForwardingRule,
   PortForwardingType,
   SSHKey,
 } from "../domain/models";
+import { resolveGroupDefaults, applyGroupDefaults } from "../domain/groupConfig";
 import { cn } from "../lib/utils";
 import SelectHostPanel from "./SelectHostPanel";
 import {
@@ -66,6 +68,7 @@ interface PortForwardingProps {
   identities?: import('../domain/models').Identity[];
   customGroups: string[];
   managedSources?: ManagedSource[];
+  groupConfigs?: GroupConfig[];
   onNewHost?: () => void;
   onSaveHost?: (host: Host) => void;
   onCreateGroup?: (groupPath: string) => void;
@@ -77,6 +80,7 @@ const PortForwarding: React.FC<PortForwardingProps> = ({
   identities = [],
   customGroups: _customGroups,
   managedSources = [],
+  groupConfigs = [],
   onNewHost: _onNewHost,
   onSaveHost,
   onCreateGroup: _onCreateGroup,
@@ -113,8 +117,8 @@ const PortForwarding: React.FC<PortForwardingProps> = ({
   // Start a port forwarding tunnel
   const handleStartTunnel = useCallback(
     async (rule: PortForwardingRule) => {
-      const _host = hosts.find((h) => h.id === rule.hostId);
-      if (!_host) {
+      const _rawHost = hosts.find((h) => h.id === rule.hostId);
+      if (!_rawHost) {
         setRuleStatus(rule.id, "error", t("pf.error.hostNotFound"));
         toast.error(
           t("pf.error.hostNotFound"),
@@ -123,6 +127,10 @@ const PortForwarding: React.FC<PortForwardingProps> = ({
         return;
       }
 
+      const _host = _rawHost.group
+        ? applyGroupDefaults(_rawHost, resolveGroupDefaults(_rawHost.group, groupConfigs))
+        : _rawHost;
+
       setPendingOperations((prev) => new Set([...prev, rule.id]));
       let errorShown = false;
 
@@ -161,7 +169,7 @@ const PortForwarding: React.FC<PortForwardingProps> = ({
         });
       }
     },
-    [hosts, identities, keys, setRuleStatus, startTunnel, t],
+    [hosts, identities, keys, groupConfigs, setRuleStatus, startTunnel, t],
   );
 
   // Stop a port forwarding tunnel

components/QuickAddSnippetDialog.tsx

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

components/QuickSwitcher.tsx

@@ -10,9 +10,10 @@ import React, { memo, useCallback, useEffect, useMemo, useRef, useState } from "
 import { useI18n } from "../application/i18n/I18nProvider";
 import { Host, TerminalSession, Workspace } from "../types";
 import { KeyBinding } from "../domain/models";
+import { useDiscoveredShells, getShellIconPath, isMonochromeShellIcon } from "../lib/useDiscoveredShells";
 
 type QuickSwitcherItem = {
-  type: "host" | "tab" | "workspace" | "action";
+  type: "host" | "tab" | "workspace" | "action" | "shell";
   id: string;
   data?: Host | TerminalSession | Workspace;
 };
@@ -66,7 +67,7 @@ interface QuickSwitcherProps {
   onSelect: (host: Host) => void;
   onSelectTab: (tabId: string) => void;
   onClose: () => void;
-  onCreateLocalTerminal?: () => void;
+  onCreateLocalTerminal?: (shell?: { command: string; args?: string[]; name?: string; icon?: string }) => void;
   // onCreateWorkspace removed - feature not currently used
   keyBindings?: KeyBinding[];
 }
@@ -85,6 +86,18 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
   keyBindings,
 }) => {
   const { t } = useI18n();
+  const discoveredShells = useDiscoveredShells();
+
+  const filteredShells = useMemo(() => {
+    const list = !query.trim()
+      ? discoveredShells
+      : discoveredShells.filter(
+          (s) => s.name.toLowerCase().includes(query.toLowerCase()) || s.id.toLowerCase().includes(query.toLowerCase())
+        );
+    // Default shell first
+    return [...list].sort((a, b) => (a.isDefault === b.isDefault ? 0 : a.isDefault ? -1 : 1));
+  }, [discoveredShells, query]);
+
   // Get hotkey display strings
   const getHotkeyLabel = useCallback((actionId: string) => {
     const binding = keyBindings?.find(k => k.id === actionId);
@@ -155,13 +168,23 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
       workspaces.forEach((w) =>
         items.push({ type: "workspace", id: w.id, data: w }),
       );
-      // Quick connect actions
-      items.push({ type: "action", id: "local-terminal" });
+      // Local shells (or fallback action if discovery not ready)
+      if (filteredShells.length > 0) {
+        filteredShells.forEach((shell) =>
+          items.push({ type: "shell", id: shell.id }),
+        );
+      } else {
+        items.push({ type: "action", id: "local-terminal" });
+      }
     } else {
       // Recent connections only
       results.forEach((host) =>
         items.push({ type: "host", id: host.id, data: host }),
       );
+      // Also include matching shells in search results
+      filteredShells.forEach((shell) =>
+        items.push({ type: "shell", id: shell.id }),
+      );
     }
 
     // Build index map for O(1) lookup
@@ -171,7 +194,7 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
     });
 
     return { flatItems: items, itemIndexMap: indexMap };
-  }, [showCategorized, results, orphanSessions, workspaces]);
+  }, [showCategorized, results, orphanSessions, workspaces, filteredShells]);
 
   // O(1) index lookup
   const getItemIndex = useCallback((type: string, id: string) => {
@@ -210,6 +233,14 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
           onClose();
         }
         break;
+      case "shell": {
+        const shell = discoveredShells.find(s => s.id === item.id);
+        if (shell && onCreateLocalTerminal) {
+          onCreateLocalTerminal({ command: shell.command, args: shell.args, name: shell.name, icon: shell.icon });
+          onClose();
+        }
+        break;
+      }
     }
   };
 
@@ -369,21 +400,60 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
               })}
             </div>
 
-            {/* Quick connect section */}
-            <div>
-              <div className="px-4 py-1.5">
-                <span className="text-xs font-medium text-muted-foreground">
-                  Quick connect
-                </span>
+            {/* Local Shells section */}
+            {/* Local Shells or fallback Local Terminal */}
+            {filteredShells.length > 0 ? (
+              <div>
+                <div className="px-4 py-1.5">
+                  <span className="text-xs font-medium text-muted-foreground">
+                    {t("qs.localShells")}
+                  </span>
+                </div>
+                {filteredShells.map((shell) => {
+                  const idx = getItemIndex("shell", shell.id);
+                  const isSelected = idx === selectedIndex;
+                  return (
+                    <div
+                      key={shell.id}
+                      className={`flex items-center gap-3 px-4 py-2.5 cursor-pointer transition-colors ${
+                        isSelected ? "bg-primary/15" : "hover:bg-muted/50"
+                      }`}
+                      onClick={() => {
+                        if (onCreateLocalTerminal) {
+                          onCreateLocalTerminal({ command: shell.command, args: shell.args, name: shell.name, icon: shell.icon });
+                          onClose();
+                        }
+                      }}
+                      onMouseEnter={() => setSelectedIndex(idx)}
+                    >
+                      <img
+                        src={getShellIconPath(shell.icon)}
+                        alt={shell.name}
+                        className={`h-6 w-6 shrink-0${isMonochromeShellIcon(shell.icon) ? " dark:invert" : ""}`}
+                      />
+                      <span className="text-sm font-medium">{shell.name}</span>
+                      {shell.isDefault && (
+                        <span className="text-[10px] text-muted-foreground bg-muted px-1.5 py-0.5 rounded">
+                          {t("qs.default")}
+                        </span>
+                      )}
+                    </div>
+                  );
+                })}
               </div>
-
-              {/* Local Terminal */}
-              {onCreateLocalTerminal && (
+            ) : onCreateLocalTerminal && (
+              <div>
+                <div className="px-4 py-1.5">
+                  <span className="text-xs font-medium text-muted-foreground">
+                    {t("qs.localShells")}
+                  </span>
+                </div>
                 <div
-                  className={`flex items-center gap-3 px-4 py-2.5 cursor-pointer transition-colors ${getItemIndex("action", "local-terminal") === selectedIndex
-                    ? "bg-primary/15"
-                    : "hover:bg-muted/50"
-                    }`}
+                  className={`flex items-center gap-3 px-4 py-2.5 cursor-pointer transition-colors ${
+                    getItemIndex("action", "local-terminal") === selectedIndex
+                      ? "bg-primary/15"
+                      : "hover:bg-muted/50"
+                  }`}
                   onClick={() => {
                     onCreateLocalTerminal();
                     onClose();
@@ -397,10 +467,8 @@ const QuickSwitcherInner: React.FC<QuickSwitcherProps> = ({
                   </div>
                   <span className="text-sm font-medium">{t("qs.localTerminal")}</span>
                 </div>
-              )}
-
-              {/* Serial removed (not supported) */}
-            </div>
+              </div>
+            )}
           </div>
         </ScrollArea>
       </div>

components/ScriptsSidePanel.tsx

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

components/SelectHostPanel.tsx

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

components/SerialHostDetailsPanel.tsx

@@ -17,6 +17,7 @@ import {
   AsidePanel,
   AsidePanelContent,
   AsidePanelFooter,
+  type AsidePanelLayout,
 } from './ui/aside-panel';
 
 interface SerialPort {
@@ -35,6 +36,7 @@ interface SerialHostDetailsPanelProps {
   groups?: string[];
   onSave: (host: Host) => void;
   onCancel: () => void;
+  layout?: AsidePanelLayout;
 }
 
 const BAUD_RATES = [300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600];
@@ -49,6 +51,7 @@ export const SerialHostDetailsPanel: React.FC<SerialHostDetailsPanelProps> = ({
   groups = [],
   onSave,
   onCancel,
+  layout = 'overlay',
 }) => {
   const { t } = useI18n();
   const terminalBackend = useTerminalBackend();
@@ -164,6 +167,8 @@ export const SerialHostDetailsPanel: React.FC<SerialHostDetailsPanelProps> = ({
       title={t('serial.edit.title')}
       subtitle={initialData.label}
       className="z-40"
+      layout={layout}
+      dataSection="serial-host-details-panel"
     >
       <AsidePanelContent>
         {/* Label */}

components/SettingsApplicationTab.tsx

@@ -96,6 +96,18 @@ export default function SettingsApplicationTab({ updateState, checkNow, openRele
     };
   }, [getApplicationInfo]);
 
+  const handleOpenExternal = async (url: string) => {
+    try {
+      await openExternal(url);
+    } catch (err) {
+      console.warn("[SettingsApplicationTab] openExternal failed:", err);
+      toast.error(
+        t("settings.application.openExternal.failedBody"),
+        t("settings.application.openExternal.failedTitle"),
+      );
+    }
+  };
+
   const handleCheckForUpdates = async () => {
     // In demo mode, allow checking even for dev builds
     if (!isUpdateDemoMode && (!appInfo.version || appInfo.version === '0.0.0')) {
@@ -198,25 +210,25 @@ export default function SettingsApplicationTab({ updateState, checkNow, openRele
               icon={<Bug size={18} />}
               title={t("settings.application.reportProblem")}
               subtitle={t("settings.application.reportProblem.subtitle")}
-              onClick={() => void openExternal(issueUrl)}
+              onClick={() => void handleOpenExternal(issueUrl)}
             />
             <ActionRow
               icon={<MessageCircle size={18} />}
               title={t("settings.application.community")}
               subtitle={t("settings.application.community.subtitle")}
-              onClick={() => void openExternal(discussionsUrl)}
+              onClick={() => void handleOpenExternal(discussionsUrl)}
             />
             <ActionRow
               icon={<Github size={18} />}
               title="GitHub"
               subtitle={t("settings.application.github.subtitle")}
-              onClick={() => void openExternal(REPO_URL)}
+              onClick={() => void handleOpenExternal(REPO_URL)}
             />
             <ActionRow
               icon={<Newspaper size={18} />}
               title={t("settings.application.whatsNew")}
               subtitle={t("settings.application.whatsNew.subtitle")}
-              onClick={() => void openExternal(releasesUrl)}
+              onClick={() => void handleOpenExternal(releasesUrl)}
             />
           </div>
         </div>

components/SettingsPage.tsx

@@ -56,6 +56,8 @@ const SettingsTerminalTabContainer: React.FC<{ settings: SettingsState }> = ({ s
         <SettingsTerminalTab
             terminalThemeId={settings.terminalThemeId}
             setTerminalThemeId={settings.setTerminalThemeId}
+            followAppTerminalTheme={settings.followAppTerminalTheme}
+            setFollowAppTerminalTheme={settings.setFollowAppTerminalTheme}
             terminalFontFamilyId={settings.terminalFontFamilyId}
             setTerminalFontFamilyId={settings.setTerminalFontFamilyId}
             terminalFontSize={settings.terminalFontSize}
@@ -86,6 +88,8 @@ const SettingsAITabContainer: React.FC = () => {
                     setActiveModelId={aiState.setActiveModelId}
                     globalPermissionMode={aiState.globalPermissionMode}
                     setGlobalPermissionMode={aiState.setGlobalPermissionMode}
+                    toolIntegrationMode={aiState.toolIntegrationMode}
+                    setToolIntegrationMode={aiState.setToolIntegrationMode}
                     externalAgents={aiState.externalAgents}
                     setExternalAgents={aiState.setExternalAgents}
                     defaultAgentId={aiState.defaultAgentId}
@@ -113,6 +117,7 @@ const SettingsSyncTabWithVault: React.FC<{ onSettingsApplied?: () => void }> = (
         customGroups,
         snippetPackages,
         knownHosts,
+        groupConfigs,
         importDataFromString,
         clearVaultData,
     } = useVaultState();
@@ -132,8 +137,8 @@ const SettingsSyncTabWithVault: React.FC<{ onSettingsApplied?: () => void }> = (
     );
 
     const vault = useMemo(
-        () => ({ hosts, keys, identities, snippets, customGroups, snippetPackages, knownHosts }),
-        [hosts, keys, identities, snippets, customGroups, snippetPackages, knownHosts],
+        () => ({ hosts, keys, identities, snippets, customGroups, snippetPackages, knownHosts, groupConfigs }),
+        [hosts, keys, identities, snippets, customGroups, snippetPackages, knownHosts, groupConfigs],
     );
 
     return (
@@ -154,10 +159,6 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
     const { updateState, checkNow, installUpdate, openReleasePage, startDownload, isUpdateDemoMode } = useUpdateCheck({ autoUpdateEnabled: settings.autoUpdateEnabled });
     const [activeTab, setActiveTab] = useState("application");
     const [mountedTabs, setMountedTabs] = useState(() => new Set(["application"]));
-    const isImmersive = settings.immersiveMode;
-    const toggleImmersive = useCallback(() => {
-        settings.setImmersiveMode(!isImmersive);
-    }, [settings, isImmersive]);
 
     useEffect(() => {
         notifyRendererReady();
@@ -285,8 +286,6 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                             setUiLanguage={settings.setUiLanguage}
                             customCSS={settings.customCSS}
                             setCustomCSS={settings.setCustomCSS}
-                            isImmersive={isImmersive}
-                            onToggleImmersive={toggleImmersive}
                         />
                     )}
 

components/SftpSidePanel.tsx

@@ -33,6 +33,7 @@ import { useSftpViewPaneCallbacks } from "./sftp/hooks/useSftpViewPaneCallbacks"
 import { useSftpViewTabs } from "./sftp/hooks/useSftpViewTabs";
 import { useSftpKeyboardShortcuts } from "./sftp/hooks/useSftpKeyboardShortcuts";
 import { sftpFocusStore } from "./sftp/hooks/useSftpFocusedPane";
+import { keepOnlyPaneSelections } from "./sftp/hooks/selectionScope";
 import { KeyBinding, HotkeyScheme } from "../domain/models";
 
 interface SftpSidePanelProps {
@@ -130,12 +131,14 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
   const autoSyncRef = useRef(sftpAutoSync);
   autoSyncRef.current = sftpAutoSync;
   const panelRootRef = useRef<HTMLDivElement>(null);
+  const dialogActionScopeIdRef = useRef(`sftp-side-panel:${crypto.randomUUID()}`);
   const [hasPaneFocus, setHasPaneFocus] = useState(false);
 
   useSftpKeyboardShortcuts({
     keyBindings,
     hotkeyScheme,
     sftpRef,
+    dialogActionScopeId: dialogActionScopeIdRef.current,
     isActive: isVisible && hasPaneFocus,
   });
 
@@ -149,10 +152,19 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
     sftpRef.current.setShowHiddenFiles("left", paneId, !pane.showHiddenFiles);
   }, []);
 
+  const syncFocusedSelection = useCallback((tabId: string | null) => {
+    if (tabId) {
+      keepOnlyPaneSelections(sftpRef.current, { side: "left", tabId });
+      return;
+    }
+    keepOnlyPaneSelections(sftpRef.current, null);
+  }, []);
+
   const handlePaneFocus = useCallback(() => {
     sftpFocusStore.setFocusedSide("left");
     setHasPaneFocus(true);
-  }, []);
+    syncFocusedSelection(sftpRef.current.getActiveTabId("left"));
+  }, [syncFocusedSelection]);
 
   // NOTE: We intentionally do NOT sync to activeTabStore here.
   // activeTabStore is a global singleton shared with SftpView.
@@ -161,19 +173,30 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
   useEffect(() => {
     if (!isVisible) {
       setHasPaneFocus(false);
+      syncFocusedSelection(null);
     }
-  }, [isVisible]);
+  }, [isVisible, syncFocusedSelection]);
 
   useEffect(() => {
     if (!isVisible) return;
 
     const handlePointerDown = (event: PointerEvent) => {
       const target = event.target as Node | null;
+      const elementTarget = target instanceof Element ? target : null;
+      const isPortalInteraction = !!elementTarget?.closest(
+        '#netcatty-context-menu-root, [role="dialog"], [data-radix-popper-content-wrapper]',
+      );
+      if (isPortalInteraction) {
+        return;
+      }
+
       if (panelRootRef.current?.contains(target)) {
         sftpFocusStore.setFocusedSide("left");
         setHasPaneFocus(true);
+        syncFocusedSelection(sftpRef.current.getActiveTabId("left"));
       } else {
         setHasPaneFocus(false);
+        syncFocusedSelection(null);
       }
     };
 
@@ -181,7 +204,7 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
     return () => {
       document.removeEventListener("pointerdown", handlePointerDown, true);
     };
-  }, [isVisible]);
+  }, [isVisible, syncFocusedSelection]);
 
   const {
     leftCallbacks,
@@ -599,10 +622,12 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
                 <SftpPaneView
                   side="left"
                   pane={pane}
+                  dialogActionScopeId={dialogActionScopeIdRef.current}
                   isPaneFocused={isVisible && hasPaneFocus}
                   sftpDefaultViewMode={sftpDefaultViewMode}
                   showHeader
                   showEmptyHeader
+                  forceActive
                   onToggleShowHiddenFiles={() => handleToggleHiddenFiles(pane.id)}
                   onGoToTerminalCwd={onGetTerminalCwd ? handleGoToTerminalCwd : undefined}
                 />
@@ -646,6 +671,8 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
           handleSaveTextFile={handleSaveTextFile}
           editorWordWrap={editorWordWrap}
           setEditorWordWrap={setEditorWordWrap}
+          hotkeyScheme={hotkeyScheme}
+          keyBindings={keyBindings}
           showFileOpenerDialog={showFileOpenerDialog}
           setShowFileOpenerDialog={setShowFileOpenerDialog}
           fileOpenerTarget={fileOpenerTarget}
@@ -675,6 +702,8 @@ const sidePanelAreEqual = (prev: SftpSidePanelProps, next: SftpSidePanelProps):
   prev.sftpAutoSync === next.sftpAutoSync &&
   prev.sftpShowHiddenFiles === next.sftpShowHiddenFiles &&
   prev.sftpUseCompressedUpload === next.sftpUseCompressedUpload &&
+  prev.hotkeyScheme === next.hotkeyScheme &&
+  prev.keyBindings === next.keyBindings &&
   prev.editorWordWrap === next.editorWordWrap &&
   prev.setEditorWordWrap === next.setEditorWordWrap &&
   prev.onGetTerminalCwd === next.onGetTerminalCwd &&

components/SftpView.tsx

@@ -25,6 +25,7 @@ import { useRenderTracker } from "../lib/useRenderTracker";
 import { cn } from "../lib/utils";
 import { useInstantThemeSwitch } from "../lib/useInstantThemeSwitch";
 import { Host, Identity, SSHKey } from "../types";
+import { resolveGroupDefaults, applyGroupDefaults } from "../domain/groupConfig";
 import { useSftpFileAssociations } from "../application/state/useSftpFileAssociations";
 import { toast } from "./ui/toast";
 
@@ -40,6 +41,8 @@ import { useSftpViewPaneCallbacks } from "./sftp/hooks/useSftpViewPaneCallbacks"
 import { useSftpViewTabs } from "./sftp/hooks/useSftpViewTabs";
 import { useSftpKeyboardShortcuts } from "./sftp/hooks/useSftpKeyboardShortcuts";
 import { sftpFocusStore, SftpFocusedSide, useSftpFocusedSide } from "./sftp/hooks/useSftpFocusedPane";
+import { keepOnlyActivePaneSelections, keepOnlyPaneSelections } from "./sftp/hooks/selectionScope";
+
 
 // Wrapper component that subscribes to activeTabId for CSS visibility
 // This isolates the activeTabId subscription - only this component re-renders on tab switch
@@ -49,6 +52,7 @@ interface SftpViewProps {
   hosts: Host[];
   keys: SSHKey[];
   identities: Identity[];
+  groupConfigs?: import('../domain/models').GroupConfig[];
   updateHosts: (hosts: Host[]) => void;
   sftpDefaultViewMode: "list" | "tree";
   sftpDoubleClickBehavior: "open" | "transfer";
@@ -65,6 +69,7 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
   hosts,
   keys,
   identities,
+  groupConfigs = [],
   updateHosts,
   sftpDefaultViewMode,
   sftpDoubleClickBehavior,
@@ -79,6 +84,7 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
   const { t } = useI18n();
   const isActive = useIsSftpActive();
   const rootRef = useRef<HTMLDivElement>(null);
+  const dialogActionScopeIdRef = useRef("sftp-main-view");
 
   useInstantThemeSwitch(rootRef);
 
@@ -101,7 +107,17 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
     defaultShowHiddenFiles: sftpShowHiddenFiles,
   }), [fileWatchHandlers, sftpUseCompressedUpload, sftpShowHiddenFiles]);
 
-  const sftp = useSftpState(hosts, keys, identities, sftpOptions);
+  // Pre-resolve group defaults so SFTP connections inherit group config
+  const effectiveHosts = useMemo(() =>
+    hosts.map(h => {
+      if (!h.group) return h;
+      const defaults = resolveGroupDefaults(h.group, groupConfigs);
+      return applyGroupDefaults(h, defaults);
+    }),
+    [hosts, groupConfigs],
+  );
+
+  const sftp = useSftpState(effectiveHosts, keys, identities, sftpOptions);
 
   // Get backend helpers for file downloads and local filesystem writes.
   const {
@@ -132,6 +148,7 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
     keyBindings,
     hotkeyScheme,
     sftpRef,
+    dialogActionScopeId: dialogActionScopeIdRef.current,
     isActive,
   });
 
@@ -139,8 +156,18 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
   const focusedSide = useSftpFocusedSide();
 
   // Handle pane focus when clicking on a pane container
-  const handlePaneFocus = useCallback((side: SftpFocusedSide) => {
+  // Clear the opposite side's selection so file operations only affect the focused pane
+  const handlePaneFocus = useCallback((side: SftpFocusedSide, targetTabId?: string) => {
+    const prevSide = sftpFocusStore.getFocusedSide();
     sftpFocusStore.setFocusedSide(side);
+    if (prevSide !== side) {
+      if (targetTabId) {
+        keepOnlyPaneSelections(sftpRef.current, { side, tabId: targetTabId });
+      } else {
+        // Focus side changed — clear other panes but keep the newly focused pane intact.
+        keepOnlyActivePaneSelections(sftpRef.current, side);
+      }
+    }
   }, []);
 
   const handleToggleHiddenFiles = useCallback((side: "left" | "right", paneId: string) => {
@@ -255,6 +282,26 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
     handleHostSelectRight,
   } = useSftpViewTabs({ sftp, sftpRef });
 
+  const handleAddTabLeftWithFocus = useCallback(() => {
+    const tabId = handleAddTabLeft();
+    handlePaneFocus("left", tabId);
+  }, [handleAddTabLeft, handlePaneFocus]);
+
+  const handleAddTabRightWithFocus = useCallback(() => {
+    const tabId = handleAddTabRight();
+    handlePaneFocus("right", tabId);
+  }, [handleAddTabRight, handlePaneFocus]);
+
+  const handleSelectTabLeftWithFocus = useCallback((tabId: string) => {
+    handleSelectTabLeft(tabId);
+    handlePaneFocus("left", tabId);
+  }, [handlePaneFocus, handleSelectTabLeft]);
+
+  const handleSelectTabRightWithFocus = useCallback((tabId: string) => {
+    handleSelectTabRight(tabId);
+    handlePaneFocus("right", tabId);
+  }, [handlePaneFocus, handleSelectTabRight]);
+
   return (
     <SftpContextProvider
       hosts={hosts}
@@ -295,9 +342,9 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
               <SftpTabBar
                 tabs={leftTabsInfo}
                 side="left"
-                onSelectTab={handleSelectTabLeft}
+                onSelectTab={handleSelectTabLeftWithFocus}
                 onCloseTab={handleCloseTabLeft}
-                onAddTab={handleAddTabLeft}
+                onAddTab={handleAddTabLeftWithFocus}
                 onReorderTabs={handleReorderTabsLeft}
                 onMoveTabToOtherSide={handleMoveTabFromRightToLeft}
               />
@@ -313,6 +360,7 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
                   <SftpPaneView
                     side="left"
                     pane={pane}
+                    dialogActionScopeId={dialogActionScopeIdRef.current}
                     isPaneFocused={focusedSide === "left"}
                     sftpDefaultViewMode={sftpDefaultViewMode}
                     showHeader
@@ -354,9 +402,9 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
               <SftpTabBar
                 tabs={rightTabsInfo}
                 side="right"
-                onSelectTab={handleSelectTabRight}
+                onSelectTab={handleSelectTabRightWithFocus}
                 onCloseTab={handleCloseTabRight}
-                onAddTab={handleAddTabRight}
+                onAddTab={handleAddTabRightWithFocus}
                 onReorderTabs={handleReorderTabsRight}
                 onMoveTabToOtherSide={handleMoveTabFromLeftToRight}
               />
@@ -372,6 +420,7 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
                   <SftpPaneView
                     side="right"
                     pane={pane}
+                    dialogActionScopeId={dialogActionScopeIdRef.current}
                     isPaneFocused={focusedSide === "right"}
                     sftpDefaultViewMode={sftpDefaultViewMode}
                     showHeader
@@ -418,6 +467,8 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
           handleSaveTextFile={handleSaveTextFile}
           editorWordWrap={editorWordWrap}
           setEditorWordWrap={setEditorWordWrap}
+          hotkeyScheme={hotkeyScheme}
+          keyBindings={keyBindings}
           showFileOpenerDialog={showFileOpenerDialog}
           setShowFileOpenerDialog={setShowFileOpenerDialog}
           fileOpenerTarget={fileOpenerTarget}
@@ -435,6 +486,7 @@ const sftpViewAreEqual = (prev: SftpViewProps, next: SftpViewProps): boolean =>
   prev.hosts === next.hosts &&
   prev.keys === next.keys &&
   prev.identities === next.identities &&
+  prev.groupConfigs === next.groupConfigs &&
   prev.sftpDefaultViewMode === next.sftpDefaultViewMode &&
   prev.sftpDoubleClickBehavior === next.sftpDoubleClickBehavior &&
   prev.sftpAutoSync === next.sftpAutoSync &&

components/SnippetsManager.tsx

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

components/Terminal.tsx

@@ -28,6 +28,7 @@ import {
 import {
   resolveHostTerminalThemeId,
 } from "../domain/terminalAppearance";
+import { classifyDistroId } from "../domain/host";
 import { resolveHostAuth } from "../domain/sshAuth";
 import { useTerminalBackend } from "../application/state/useTerminalBackend";
 import KnownHostConfirmDialog, { HostKeyInfo } from "./KnownHostConfirmDialog";
@@ -44,8 +45,10 @@ import { TerminalToolbar } from "./terminal/TerminalToolbar";
 import { TerminalComposeBar } from "./terminal/TerminalComposeBar";
 import { TerminalContextMenu } from "./terminal/TerminalContextMenu";
 import { TerminalSearchBar } from "./terminal/TerminalSearchBar";
+import { ZmodemProgressIndicator } from "./terminal/ZmodemProgressIndicator";
+import { useZmodemTransfer } from "./terminal/hooks/useZmodemTransfer";
 import { createTerminalSessionStarters, type PendingAuth } from "./terminal/runtime/createTerminalSessionStarters";
-import { createXTermRuntime, type XTermRuntime } from "./terminal/runtime/createXTermRuntime";
+import { createXTermRuntime, primaryFontFamily, type XTermRuntime } from "./terminal/runtime/createXTermRuntime";
 import { XTERM_PERFORMANCE_CONFIG } from "../infrastructure/config/xtermPerformance";
 import { useTerminalSearch } from "./terminal/hooks/useTerminalSearch";
 import { useTerminalContextActions } from "./terminal/hooks/useTerminalContextActions";
@@ -120,6 +123,7 @@ interface TerminalProps {
   fontFamilyId: string;
   fontSize: number;
   terminalTheme: TerminalTheme;
+  followAppTerminalTheme?: boolean;
   terminalSettings?: TerminalSettings;
   sessionId: string;
   startupCommand?: string;
@@ -194,6 +198,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   fontFamilyId,
   fontSize,
   terminalTheme,
+  followAppTerminalTheme = false,
   terminalSettings,
   sessionId,
   startupCommand,
@@ -254,6 +259,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   isVisibleRef.current = isVisible;
   const pendingOutputScrollRef = useRef(false);
   const lastFittedSizeRef = useRef<{ width: number; height: number } | null>(null);
+  const fontWeightFixupDoneRef = useRef(false);
 
   useEffect(() => {
     if (xtermRuntimeRef.current) {
@@ -327,6 +333,23 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const statusRef = useRef<TerminalSession["status"]>(status);
   statusRef.current = status;
 
+  // Work around xterm.js WebGL renderer bug: glyphs rendered via the constructor
+  // look different from dynamically-set ones. After text appears on screen (status
+  // becomes "connected"), do a fontWeight round-trip to normalize the rendering.
+  useEffect(() => {
+    if (status !== 'connected' || fontWeightFixupDoneRef.current || !termRef.current) return;
+    fontWeightFixupDoneRef.current = true;
+    const timer = setTimeout(() => {
+      if (!termRef.current) return;
+      // Re-read the current weight at fire time to avoid stale closures
+      const w = termRef.current.options.fontWeight;
+      if (w === 'normal' || w === 400) return;
+      termRef.current.options.fontWeight = 'normal';
+      termRef.current.options.fontWeight = w;
+    }, 200);
+    return () => clearTimeout(timer);
+  }, [status]);
+
   const [chainProgress, setChainProgress] = useState<{
     currentHop: number;
     totalHops: number;
@@ -490,16 +513,58 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const isLocalConnection = host.protocol === "local";
   const isSerialConnection = host.protocol === "serial";
 
-  // Server stats (CPU, Memory, Disk) — only for Linux/macOS
+  // 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';
+  const isSupportedOs =
+    !isNetworkDevice &&
+    (host.os === 'linux' || host.os === 'macos' || detectedDeviceClass === 'linux-like');
   const { stats: serverStats } = useServerStats({
     sessionId,
     enabled: terminalSettings?.showServerStats ?? true,
     refreshInterval: terminalSettings?.serverStatsRefreshInterval ?? 5,
-    isSupportedOs: host.os === 'linux' || host.os === 'macos',
+    isSupportedOs,
     isConnected: status === 'connected',
     isVisible,
   });
 
+  const zmodem = useZmodemTransfer(sessionId);
+
+  const zmodemToastedRef = useRef(false);
+  useEffect(() => {
+    if (zmodem.active) {
+      zmodemToastedRef.current = false;
+      return;
+    }
+    if (zmodemToastedRef.current) return;
+    if (zmodem.error) {
+      zmodemToastedRef.current = true;
+      toast.error(zmodem.error, 'ZMODEM');
+    } else if (zmodem.filename) {
+      zmodemToastedRef.current = true;
+      toast.success(
+        `${zmodem.transferType === 'upload' ? 'Uploaded' : 'Downloaded'}: ${zmodem.filename}`,
+        'ZMODEM',
+      );
+    }
+  }, [zmodem.active, zmodem.error, zmodem.filename, zmodem.transferType]);
+
   useEffect(() => {
     if (!error) {
       lastToastedErrorRef.current = null;
@@ -553,10 +618,15 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const customThemes = useCustomThemes();
   const hasFontSizeOverride = host.fontSizeOverride === true || (host.fontSizeOverride === undefined && host.fontSize != null);
   const hasFontFamilyOverride = host.fontFamilyOverride === true || (host.fontFamilyOverride === undefined && !!host.fontFamily);
+  const hasFontWeightOverride = host.fontWeightOverride === true || (host.fontWeightOverride === undefined && host.fontWeight != null);
   const effectiveFontSize = useMemo(
     () => (hasFontSizeOverride && host.fontSize != null ? host.fontSize : fontSize),
     [fontSize, hasFontSizeOverride, host.fontSize],
   );
+  const effectiveFontWeight = useMemo(
+    () => (hasFontWeightOverride && host.fontWeight != null ? host.fontWeight : (terminalSettings?.fontWeight ?? 400)),
+    [terminalSettings?.fontWeight, hasFontWeightOverride, host.fontWeight],
+  );
   const resolvedFontFamily = useMemo(() => {
     const hostFontId = hasFontFamilyOverride && host.fontFamily
       ? host.fontFamily
@@ -566,6 +636,10 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   }, [availableFonts, fontFamilyId, hasFontFamilyOverride, host.fontFamily]);
 
   const effectiveTheme = useMemo(() => {
+    // When "Follow Application Theme" is on and there's no active
+    // preview, skip per-host overrides — all terminals should use the
+    // UI-matched theme passed via terminalTheme prop.
+    if (followAppTerminalTheme && !themePreviewId) return terminalTheme;
     const themeId = themePreviewId ?? resolveHostTerminalThemeId(
       { theme: host.theme, themeOverride: host.themeOverride } as Pick<Host, 'theme' | 'themeOverride'>,
       terminalTheme.id,
@@ -576,7 +650,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       if (hostTheme) return hostTheme;
     }
     return terminalTheme;
-  }, [customThemes, host.theme, host.themeOverride, terminalTheme, themePreviewId]);
+  }, [customThemes, followAppTerminalTheme, host.theme, host.themeOverride, terminalTheme, themePreviewId]);
 
   const resolvedChainHosts =
     chainHosts;
@@ -900,6 +974,9 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       termRef.current.options.theme = {
         ...effectiveTheme.colors,
         selectionBackground: effectiveTheme.colors.selection,
+        scrollbarSliderBackground: effectiveTheme.colors.foreground + '33',
+        scrollbarSliderHoverBackground: effectiveTheme.colors.foreground + '66',
+        scrollbarSliderActiveBackground: effectiveTheme.colors.foreground + '80',
       };
     }
   }, [effectiveTheme]);
@@ -913,7 +990,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         termRef.current.options.cursorStyle = terminalSettings.cursorShape;
         termRef.current.options.cursorBlink = terminalSettings.cursorBlink;
         termRef.current.options.scrollback = terminalSettings.scrollback;
-        termRef.current.options.fontWeight = terminalSettings.fontWeight as
+        termRef.current.options.fontWeight = effectiveFontWeight as
           | 100
           | 200
           | 300
@@ -928,10 +1005,10 @@ const TerminalComponent: React.FC<TerminalProps> = ({
           if (typeof document === "undefined" || !document.fonts?.check) {
             return terminalSettings.fontWeightBold;
           }
-          const weightSpec = `${terminalSettings.fontWeightBold} ${effectiveFontSize}px ${fontFamily}`;
+          const weightSpec = `${terminalSettings.fontWeightBold} ${effectiveFontSize}px ${primaryFontFamily(fontFamily)}`;
           return document.fonts.check(weightSpec)
             ? terminalSettings.fontWeightBold
-            : terminalSettings.fontWeight;
+            : effectiveFontWeight;
         })();
 
         termRef.current.options.fontWeightBold = resolvedFontWeightBold as
@@ -966,7 +1043,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         lastFittedSizeRef.current = null;
       }
     }
-  }, [effectiveFontSize, resolvedFontFamily, terminalSettings]);
+  }, [effectiveFontSize, effectiveFontWeight, resolvedFontFamily, terminalSettings]);
 
   useEffect(() => {
     if (!isVisible) return;
@@ -1015,10 +1092,10 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         if (terminalSettings && termRef.current) {
           const fontFamily = termRef.current.options?.fontFamily || "";
           if (typeof document !== "undefined" && document.fonts?.check) {
-            const weightSpec = `${terminalSettings.fontWeightBold} ${effectiveFontSize}px ${fontFamily}`;
+            const weightSpec = `${terminalSettings.fontWeightBold} ${effectiveFontSize}px ${primaryFontFamily(fontFamily)}`;
             const resolvedBold = document.fonts.check(weightSpec)
               ? terminalSettings.fontWeightBold
-              : terminalSettings.fontWeight;
+              : effectiveFontWeight;
             termRef.current.options.fontWeightBold = resolvedBold as
               | 100
               | 200
@@ -1049,7 +1126,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     return () => {
       cancelled = true;
     };
-  }, [effectiveFontSize, resizeSession, terminalSettings]);
+  }, [effectiveFontSize, effectiveFontWeight, resizeSession, terminalSettings]);
 
   useEffect(() => {
     if (!isVisible || !containerRef.current || !fitAddonRef.current) return;
@@ -1086,12 +1163,38 @@ const TerminalComponent: React.FC<TerminalProps> = ({
 
   useEffect(() => {
     if (!isVisible || !fitAddonRef.current) return;
-    const timer = setTimeout(() => {
+    // Fit twice: once after initial layout (100ms) and again after layout settles
+    // (350ms) to handle race conditions during split operations where the container
+    // dimensions may not be final on the first pass.
+    const timer1 = setTimeout(() => {
       safeFit({ requireVisible: true });
     }, 100);
-    return () => clearTimeout(timer);
+    const timer2 = setTimeout(() => {
+      safeFit({ force: true, requireVisible: true });
+    }, 350);
+    return () => { clearTimeout(timer1); clearTimeout(timer2); };
   }, [inWorkspace, isVisible]);
 
+  // When search bar opens/closes, re-fit terminal and maintain scroll position
+  useEffect(() => {
+    const term = termRef.current;
+    if (!term || !fitAddonRef.current) return;
+    const buffer = term.buffer.active;
+    const wasAtBottom = buffer.viewportY >= buffer.baseY;
+    const prevViewportY = buffer.viewportY;
+    const timer = setTimeout(() => {
+      safeFit({ force: true, requireVisible: true });
+      requestAnimationFrame(() => {
+        if (wasAtBottom) {
+          term.scrollToBottom();
+        } else {
+          term.scrollToLine(prevViewportY);
+        }
+      });
+    }, 0);
+    return () => clearTimeout(timer);
+  }, [isSearchOpen]);
+
   useEffect(() => {
     const shouldAutoFocus = isVisible && termRef.current && (!inWorkspace || isFocusMode);
     if (shouldAutoFocus) {
@@ -1355,6 +1458,10 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const handleRetry = () => {
     if (!termRef.current) return;
     cleanupSession();
+    // Reset terminal state: disable mouse tracking modes and clear screen so
+    // stale SGR mouse sequences don't leak into the new session as text input.
+    termRef.current.write('\x1b[?1000l\x1b[?1002l\x1b[?1003l\x1b[?1006l');
+    termRef.current.reset();
     auth.resetForRetry();
     terminalDataCapturedRef.current = false;
     hasRunStartupCommandRef.current = false;
@@ -1549,7 +1656,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         )}
         <div className="absolute left-0 right-0 top-0 z-20 pointer-events-none">
           <div
-            className="flex items-center gap-1 px-2 py-0.5 backdrop-blur-md pointer-events-auto min-w-0 border-b-[0.5px]"
+            className="flex items-center gap-1 px-2 py-0.5 backdrop-blur-md pointer-events-auto min-w-0"
             style={{
               backgroundColor: 'var(--terminal-ui-bg)',
               color: 'var(--terminal-ui-fg)',
@@ -1937,7 +2044,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         >
           <div
             ref={containerRef}
-            className="absolute inset-x-0 bottom-0"
+            className="xterm-container absolute inset-x-0 bottom-0"
             style={{
               top: isSearchOpen ? "64px" : "30px",
               paddingLeft: 6,
@@ -1963,6 +2070,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                 containerRef={containerRef}
                 onRequestReposition={autocomplete.repositionPopup}
                 searchBarOffset={isSearchOpen ? 64 : 30}
+                onDismiss={autocompleteClosePopup}
               />,
               document.body,
             )
@@ -2047,6 +2155,22 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                 }}
               />
             )}
+
+          {/* ZMODEM transfer progress indicator */}
+          {zmodem.active && (
+            <div className="absolute bottom-4 right-4 z-[25] pointer-events-auto">
+              <ZmodemProgressIndicator
+                transferType={zmodem.transferType}
+                filename={zmodem.filename}
+                transferred={zmodem.transferred}
+                total={zmodem.total}
+                fileIndex={zmodem.fileIndex}
+                fileCount={zmodem.fileCount}
+                finalizing={zmodem.finalizing}
+                onCancel={zmodem.cancel}
+              />
+            </div>
+          )}
         </div>
 
         {/* Compose Bar (solo sessions only; workspace uses TerminalLayer's global bar) */}

components/TerminalLayer.tsx

@@ -14,12 +14,15 @@ import { KeyBinding, TerminalSettings } from '../domain/models';
 import {
   clearHostFontFamilyOverride,
   clearHostFontSizeOverride,
+  clearHostFontWeightOverride,
   clearHostThemeOverride,
   hasHostFontFamilyOverride,
   hasHostFontSizeOverride,
+  hasHostFontWeightOverride,
   hasHostThemeOverride,
   resolveHostTerminalFontFamilyId,
   resolveHostTerminalFontSize,
+  resolveHostTerminalFontWeight,
   resolveHostTerminalThemeId,
 } from '../domain/terminalAppearance';
 import { cn, normalizeLineEndings } from '../lib/utils';
@@ -29,7 +32,8 @@ import { useStoredNumber } from '../application/state/useStoredNumber';
 import { STORAGE_KEY_SIDE_PANEL_WIDTH } from '../infrastructure/config/storageKeys';
 import { buildCacheKey } from '../application/state/sftp/sharedRemoteHostCache';
 import type { DropEntry } from '../lib/sftpFileUtils';
-import { Host, Identity, KnownHost, SSHKey, Snippet, TerminalSession, TerminalTheme, Workspace, WorkspaceNode } from '../types';
+import { GroupConfig, Host, Identity, KnownHost, SSHKey, Snippet, TerminalSession, TerminalTheme, Workspace, WorkspaceNode } from '../types';
+import { resolveGroupDefaults, applyGroupDefaults } from '../domain/groupConfig';
 import { DistroAvatar } from './DistroAvatar';
 import Terminal from './Terminal';
 import { SftpSidePanel } from './SftpSidePanel';
@@ -309,6 +313,7 @@ const AIChatPanelsHostInner: React.FC<AIChatPanelsHostProps> = ({
               activeProviderId={aiState.activeProviderId}
               activeModelId={aiState.activeModelId}
               defaultAgentId={aiState.defaultAgentId}
+              toolIntegrationMode={aiState.toolIntegrationMode}
               externalAgents={aiState.externalAgents}
               setExternalAgents={aiState.setExternalAgents}
               agentModelMap={aiState.agentModelMap}
@@ -338,6 +343,7 @@ AIChatPanelsHost.displayName = 'AIChatPanelsHost';
 
 interface TerminalLayerProps {
   hosts: Host[];
+  groupConfigs: GroupConfig[];
   keys: SSHKey[];
   identities: Identity[];
   snippets: Snippet[];
@@ -347,6 +353,7 @@ interface TerminalLayerProps {
   knownHosts?: KnownHost[];
   draggingSessionId: string | null;
   terminalTheme: TerminalTheme;
+  followAppTerminalTheme?: boolean;
   terminalSettings?: TerminalSettings;
   terminalFontFamilyId: string;
   fontSize?: number;
@@ -356,6 +363,7 @@ interface TerminalLayerProps {
   onUpdateTerminalThemeId?: (themeId: string) => void;
   onUpdateTerminalFontFamilyId?: (fontFamilyId: string) => void;
   onUpdateTerminalFontSize?: (fontSize: number) => void;
+  onUpdateTerminalFontWeight?: (fontWeight: number) => void;
   onCloseSession: (sessionId: string, e?: React.MouseEvent) => void;
   onUpdateSessionStatus: (sessionId: string, status: TerminalSession['status']) => void;
   onUpdateHostDistro: (hostId: string, distro: string) => void;
@@ -391,6 +399,7 @@ interface TerminalLayerProps {
 
 const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
   hosts,
+  groupConfigs,
   keys,
   identities,
   snippets,
@@ -400,6 +409,7 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
   knownHosts = [],
   draggingSessionId,
   terminalTheme,
+  followAppTerminalTheme = false,
   terminalSettings,
   terminalFontFamilyId,
   fontSize = 14,
@@ -409,6 +419,7 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
   onUpdateTerminalThemeId,
   onUpdateTerminalFontFamilyId,
   onUpdateTerminalFontSize,
+  onUpdateTerminalFontWeight,
   onCloseSession,
   onUpdateSessionStatus,
   onUpdateHostDistro,
@@ -770,8 +781,14 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
   const sessionHostsMap = useMemo(() => {
     const map = new Map<string, Host>();
     for (const session of sessions) {
-      const existingHost = hostMap.get(session.hostId);
-      if (existingHost) {
+      const rawHost = hostMap.get(session.hostId);
+      if (rawHost) {
+        // Apply group config defaults so Terminal sees the merged host
+        const groupDefaults = rawHost.group
+          ? resolveGroupDefaults(rawHost.group, groupConfigs)
+          : {};
+        const existingHost = applyGroupDefaults(rawHost, groupDefaults);
+
         const protocol = session.protocol ?? existingHost.protocol;
         const port = session.port ?? existingHost.port;
         const moshEnabled = session.moshEnabled ?? existingHost.moshEnabled;
@@ -804,11 +821,15 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
           protocol: session.protocol ?? 'local' as const,
           moshEnabled: session.moshEnabled,
           charset: session.charset,
+          localShell: session.localShell,
+          localShellArgs: session.localShellArgs,
+          localShellName: session.localShellName,
+          localShellIcon: session.localShellIcon,
         });
       }
     }
     return map;
-  }, [sessions, hostMap]);
+  }, [sessions, hostMap, groupConfigs]);
   const sessionChainHostsMap = useMemo(() => {
     const map = new Map<string, Host[]>();
     for (const session of sessions) {
@@ -817,12 +838,19 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
       map.set(
         session.id,
         host.hostChain.hostIds
-          .map((hostId) => hostMap.get(hostId))
+          .map((hostId) => {
+            const rawChainHost = hostMap.get(hostId);
+            if (!rawChainHost) return undefined;
+            const chainGroupDefaults = rawChainHost.group
+              ? resolveGroupDefaults(rawChainHost.group, groupConfigs)
+              : {};
+            return applyGroupDefaults(rawChainHost, chainGroupDefaults);
+          })
           .filter((value): value is Host => Boolean(value)),
       );
     }
     return map;
-  }, [sessions, sessionHostsMap, hostMap]);
+  }, [sessions, sessionHostsMap, hostMap, groupConfigs]);
 
   const validTerminalTabIds = useMemo(() => {
     const ids = new Set<string>();
@@ -1354,6 +1382,17 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
   const isFocusedHostLocal = useMemo(() => {
     return focusedHost?.protocol === 'local' || !!focusedHost?.id?.startsWith('local-');
   }, [focusedHost]);
+  // Hosts not in the persisted hostMap (e.g. quick-connect) are ephemeral —
+  // sidebar appearance changes should update global settings, not per-host overrides.
+  const isFocusedHostEphemeral = useMemo(() => {
+    if (isFocusedHostLocal) return true;
+    if (!focusedHost) return true;
+    return !hostMap.has(focusedHost.id);
+  }, [focusedHost, isFocusedHostLocal, hostMap]);
+  const rawFocusedHost = useMemo(() => {
+    if (!focusedHost) return null;
+    return hostMap.get(focusedHost.id) ?? null;
+  }, [focusedHost, hostMap]);
   const previewTargetSessionId = activeWorkspace?.focusedSessionId ?? activeSession?.id ?? null;
   const activeThemePreviewId = themePreview.targetSessionId === previewTargetSessionId
     ? themePreview.themeId
@@ -1366,9 +1405,13 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
   const focusedThemeOverridden = hasHostThemeOverride(focusedHost);
   const focusedFontFamilyOverridden = hasHostFontFamilyOverride(focusedHost);
   const focusedFontSizeOverridden = hasHostFontSizeOverride(focusedHost);
+  const focusedFontWeight = resolveHostTerminalFontWeight(focusedHost, terminalSettings?.fontWeight ?? 400);
+  const focusedFontWeightOverridden = hasHostFontWeightOverride(focusedHost);
+  const visibleFocusedThemeId = followAppTerminalTheme ? terminalTheme.id : focusedThemeId;
+  const previewedOrVisibleThemeId = activeThemePreviewId ?? visibleFocusedThemeId;
   const activeTopTabsThemeId = activeSidePanelTab === 'theme' && previewTargetSessionId
-    ? (activeThemePreviewId ?? focusedThemeId)
-    : null;
+    ? previewedOrVisibleThemeId
+    : (isVisible ? visibleFocusedThemeId : null);
   const appliedPreviewSessionRef = useRef<string | null>(null);
   const customThemes = useCustomThemes();
   const applyTerminalPreviewVars = useCallback((sessionId: string | null, themeId: string | null) => {
@@ -1460,9 +1503,27 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
   }, [activeTopTabsThemeId, applyTopTabsPreviewVars]);
 
   useEffect(() => {
+    if (!followAppTerminalTheme) return;
+    if (themeCommitTimerRef.current) {
+      clearTimeout(themeCommitTimerRef.current);
+      themeCommitTimerRef.current = null;
+    }
+    const appliedSessionId = appliedPreviewSessionRef.current;
+    if (appliedSessionId) {
+      clearTerminalPreviewVars(appliedSessionId);
+      appliedPreviewSessionRef.current = null;
+    }
+    clearTopTabsPreviewVars();
+    if (themePreview.targetSessionId || themePreview.themeId) {
+      setThemePreview({ targetSessionId: null, themeId: null });
+    }
+  }, [followAppTerminalTheme, themePreview.targetSessionId, themePreview.themeId]);
+
+  useEffect(() => {
+    const panelOpen = activeSidePanelTab === 'theme' && !!previewTargetSessionId;
     const shouldKeepPreview =
-      activeSidePanelTab === 'theme' &&
-      !!previewTargetSessionId &&
+      panelOpen &&
+      themePreview.targetSessionId === previewTargetSessionId &&
       !!themePreview.targetSessionId &&
       !!themePreview.themeId;
 
@@ -1473,8 +1534,6 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
       clearTerminalPreviewVars(appliedSessionId);
       appliedPreviewSessionRef.current = null;
     }
-    clearTopTabsPreviewVars();
-
     if (themePreview.targetSessionId || themePreview.themeId) {
       setThemePreview({ targetSessionId: null, themeId: null });
     }
@@ -1484,14 +1543,14 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
     if (
       themePreview.targetSessionId === previewTargetSessionId &&
       themePreview.themeId &&
-      themePreview.themeId === focusedThemeId
+      themePreview.themeId === visibleFocusedThemeId
     ) {
       setThemePreview({ targetSessionId: null, themeId: null });
     }
-  }, [focusedThemeId, previewTargetSessionId, themePreview]);
+  }, [previewTargetSessionId, themePreview, visibleFocusedThemeId]);
 
   const handleThemeChangeForFocusedSession = useCallback((themeId: string) => {
-    if (!focusedHost || themeId === focusedThemeId) return;
+    if (!focusedHost || themeId === previewedOrVisibleThemeId) return;
     applyTerminalPreviewVars(previewTargetSessionId, themeId);
     applyTopTabsPreviewVars(themeId);
     setThemePreview({ targetSessionId: previewTargetSessionId, themeId });
@@ -1500,14 +1559,16 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
     }
     themeCommitTimerRef.current = setTimeout(() => {
       startTransition(() => {
-        if (isFocusedHostLocal) {
+        if (isFocusedHostEphemeral) {
           onUpdateTerminalThemeId?.(themeId);
           return;
         }
-        onUpdateHost({ ...focusedHost, theme: themeId, themeOverride: true });
+        if (rawFocusedHost) {
+          onUpdateHost({ ...rawFocusedHost, theme: themeId, themeOverride: true });
+        }
       });
     }, 160);
-  }, [applyTerminalPreviewVars, applyTopTabsPreviewVars, focusedHost, focusedThemeId, isFocusedHostLocal, onUpdateTerminalThemeId, onUpdateHost, previewTargetSessionId]);
+  }, [applyTerminalPreviewVars, applyTopTabsPreviewVars, focusedHost, isFocusedHostEphemeral, onUpdateTerminalThemeId, onUpdateHost, previewTargetSessionId, previewedOrVisibleThemeId, rawFocusedHost]);
 
   const handleThemeResetForFocusedSession = useCallback(() => {
     if (themeCommitTimerRef.current) {
@@ -1515,41 +1576,64 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
     }
     clearTerminalPreviewVars(previewTargetSessionId);
     setThemePreview({ targetSessionId: null, themeId: null });
-    if (!focusedHost || isFocusedHostLocal) return;
-    onUpdateHost(clearHostThemeOverride(focusedHost));
-  }, [focusedHost, isFocusedHostLocal, onUpdateHost, previewTargetSessionId]);
+    if (!focusedHost || isFocusedHostEphemeral || !rawFocusedHost) return;
+    onUpdateHost(clearHostThemeOverride(rawFocusedHost));
+  }, [focusedHost, isFocusedHostEphemeral, onUpdateHost, previewTargetSessionId, rawFocusedHost]);
 
   const handleFontFamilyChangeForFocusedSession = useCallback((fontFamilyId: string) => {
     if (!focusedHost || fontFamilyId === focusedFontFamilyId) return;
     startTransition(() => {
-      if (isFocusedHostLocal) {
+      if (isFocusedHostEphemeral) {
         onUpdateTerminalFontFamilyId?.(fontFamilyId);
         return;
       }
       onUpdateHost({ ...focusedHost, fontFamily: fontFamilyId, fontFamilyOverride: true });
     });
-  }, [focusedHost, focusedFontFamilyId, isFocusedHostLocal, onUpdateTerminalFontFamilyId, onUpdateHost]);
+  }, [focusedHost, focusedFontFamilyId, isFocusedHostEphemeral, onUpdateTerminalFontFamilyId, onUpdateHost]);
 
   const handleFontFamilyResetForFocusedSession = useCallback(() => {
-    if (!focusedHost || isFocusedHostLocal) return;
+    if (!focusedHost || isFocusedHostEphemeral) return;
     onUpdateHost(clearHostFontFamilyOverride(focusedHost));
-  }, [focusedHost, isFocusedHostLocal, onUpdateHost]);
+  }, [focusedHost, isFocusedHostEphemeral, onUpdateHost]);
 
   const handleFontSizeChangeForFocusedSession = useCallback((newFontSize: number) => {
     if (!focusedHost || newFontSize === focusedFontSize) return;
     startTransition(() => {
-      if (isFocusedHostLocal) {
+      if (isFocusedHostEphemeral) {
         onUpdateTerminalFontSize?.(newFontSize);
         return;
       }
       onUpdateHost({ ...focusedHost, fontSize: newFontSize, fontSizeOverride: true });
     });
-  }, [focusedHost, focusedFontSize, isFocusedHostLocal, onUpdateTerminalFontSize, onUpdateHost]);
+  }, [focusedHost, focusedFontSize, isFocusedHostEphemeral, onUpdateTerminalFontSize, onUpdateHost]);
 
   const handleFontSizeResetForFocusedSession = useCallback(() => {
-    if (!focusedHost || isFocusedHostLocal) return;
+    if (!focusedHost || isFocusedHostEphemeral) return;
     onUpdateHost(clearHostFontSizeOverride(focusedHost));
-  }, [focusedHost, isFocusedHostLocal, onUpdateHost]);
+  }, [focusedHost, isFocusedHostEphemeral, onUpdateHost]);
+
+  const handleFontWeightChangeForFocusedSession = useCallback((newFontWeight: number) => {
+    if (!focusedHost || newFontWeight === focusedFontWeight) return;
+    startTransition(() => {
+      if (isFocusedHostEphemeral) {
+        onUpdateTerminalFontWeight?.(newFontWeight);
+        return;
+      }
+      // Prefer raw (un-merged) host to avoid flattening group defaults
+      const rawHost = hostMap.get(focusedHost.id);
+      if (rawHost) {
+        onUpdateHost({ ...rawHost, fontWeight: newFontWeight, fontWeightOverride: true });
+      }
+    });
+  }, [focusedHost, focusedFontWeight, isFocusedHostEphemeral, onUpdateTerminalFontWeight, onUpdateHost, hostMap]);
+
+  const handleFontWeightResetForFocusedSession = useCallback(() => {
+    if (!focusedHost || isFocusedHostEphemeral) return;
+    const rawHost = hostMap.get(focusedHost.id);
+    if (rawHost) {
+      onUpdateHost(clearHostFontWeightOverride(rawHost));
+    }
+  }, [focusedHost, isFocusedHostEphemeral, onUpdateHost, hostMap]);
 
   // Keep MCP/ACP approval IPC listener alive for the entire terminal lifecycle.
   // Must live here (TerminalLayer), not inside the AI panel subtree, so closing
@@ -1644,11 +1728,11 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
   }, []);
 
   const resolvedPreviewTheme = useMemo(() => {
-    const themeId = activeThemePreviewId ?? focusedThemeId;
+    const themeId = previewedOrVisibleThemeId;
     return TERMINAL_THEMES.find((theme) => theme.id === themeId)
       || customThemes.find((theme) => theme.id === themeId)
       || terminalTheme;
-  }, [activeThemePreviewId, customThemes, focusedThemeId, terminalTheme]);
+  }, [customThemes, previewedOrVisibleThemeId, terminalTheme]);
   const sessionLogConfig = useMemo(
     () =>
       sessionLogsEnabled && sessionLogsDir
@@ -1764,7 +1848,10 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
     if (!activeWorkspace || !isFocusMode) return null;
 
     return (
-      <div className="w-56 flex-shrink-0 bg-secondary/50 border-r border-border/50 flex flex-col">
+      <div
+        className="w-56 flex-shrink-0 bg-secondary/50 border-r border-border/50 flex flex-col"
+        data-section="terminal-workspace-sidebar"
+      >
         {/* Header with view toggle */}
         <div className="h-10 flex items-center justify-between px-3 border-b border-border/50">
           <span className="text-xs font-medium text-muted-foreground">
@@ -1835,6 +1922,7 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
       <div
         ref={workspaceOuterRef}
         className="absolute inset-0 bg-background flex flex-col"
+        data-section="terminal-workspace"
         style={{
           visibility: isTerminalLayerVisible ? 'visible' : 'hidden',
           pointerEvents: isTerminalLayerVisible ? 'auto' : 'none',
@@ -2016,20 +2104,25 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
                   {activeSidePanelTab === 'theme' && (
                     <div className="absolute inset-0 z-10">
                       <ThemeSidePanel
-                        currentThemeId={activeThemePreviewId ?? focusedThemeId}
+                        followAppTerminalTheme={followAppTerminalTheme}
+                        currentThemeId={previewedOrVisibleThemeId}
                         globalThemeId={terminalTheme.id}
                         currentFontFamilyId={focusedFontFamilyId}
                         globalFontFamilyId={terminalFontFamilyId}
                         currentFontSize={focusedFontSize}
+                        currentFontWeight={focusedFontWeight}
                         canResetTheme={focusedThemeOverridden}
                         canResetFontFamily={focusedFontFamilyOverridden}
                         canResetFontSize={focusedFontSizeOverridden}
+                        canResetFontWeight={focusedFontWeightOverridden}
                         onThemeChange={handleThemeChangeForFocusedSession}
                         onThemeReset={handleThemeResetForFocusedSession}
                         onFontFamilyChange={handleFontFamilyChangeForFocusedSession}
                         onFontFamilyReset={handleFontFamilyResetForFocusedSession}
                         onFontSizeChange={handleFontSizeChangeForFocusedSession}
                         onFontSizeReset={handleFontSizeResetForFocusedSession}
+                        onFontWeightChange={handleFontWeightChangeForFocusedSession}
+                        onFontWeightReset={handleFontWeightResetForFocusedSession}
                         previewColors={resolvedPreviewTheme.colors}
                       />
                     </div>
@@ -2171,6 +2264,7 @@ const TerminalLayerInner: React.FC<TerminalLayerProps> = ({
                   fontFamilyId={terminalFontFamilyId}
                   fontSize={fontSize}
                   terminalTheme={terminalTheme}
+                  followAppTerminalTheme={followAppTerminalTheme}
                   terminalSettings={terminalSettings}
                   sessionId={session.id}
                   startupCommand={session.startupCommand}

components/TextEditorModal.tsx

@@ -20,6 +20,7 @@ loader.config({ paths: { vs: monacoBasePath } });
 
 import { useI18n } from '../application/i18n/I18nProvider';
 import { useClipboardBackend } from '../application/state/useClipboardBackend';
+import { HotkeyScheme, KeyBinding, matchesKeyBinding } from '../domain/models';
 import { getLanguageId, getLanguageName, getSupportedLanguages } from '../lib/sftpFileUtils';
 import { Button } from './ui/button';
 import { Dialog, DialogContent, DialogHeader, DialogTitle } from './ui/dialog';
@@ -34,6 +35,8 @@ interface TextEditorModalProps {
   onSave: (content: string) => Promise<void>;
   editorWordWrap: boolean;
   onToggleWordWrap: () => void;
+  hotkeyScheme: HotkeyScheme;
+  keyBindings: KeyBinding[];
 }
 
 // Map our language IDs to Monaco language IDs
@@ -122,12 +125,38 @@ const hslToHex = (hslString: string): string => {
   return `#${toHex(r)}${toHex(g)}${toHex(b)}`;
 };
 
-// Get background color from CSS variable
-const getBackgroundColor = (): string => {
-  const bgValue = getComputedStyle(document.documentElement)
-    .getPropertyValue('--background')
+// Read a CSS custom-property and convert from HSL to hex
+const getCssColor = (varName: string, fallback: string): string => {
+  const value = getComputedStyle(document.documentElement)
+    .getPropertyValue(varName)
     .trim();
-  return bgValue ? hslToHex(bgValue) : '#1e1e1e';
+  return value ? hslToHex(value) : fallback;
+};
+
+interface EditorColors {
+  bg: string;
+  fg: string;
+  primary: string;
+  card: string;
+  mutedFg: string;
+  border: string;
+}
+
+/** Read all UI CSS variables that matter for the Monaco theme. */
+const getEditorColors = (isDark: boolean): EditorColors => ({
+  bg: getCssColor('--background', isDark ? '#1e1e1e' : '#ffffff'),
+  fg: getCssColor('--foreground', isDark ? '#d4d4d4' : '#1e1e1e'),
+  primary: getCssColor('--primary', isDark ? '#569cd6' : '#0078d4'),
+  card: getCssColor('--card', isDark ? '#252526' : '#f3f3f3'),
+  mutedFg: getCssColor('--muted-foreground', isDark ? '#858585' : '#858585'),
+  border: getCssColor('--border', isDark ? '#3c3c3c' : '#d4d4d4'),
+});
+
+/** Build a fingerprint string so we can detect immersive-mode color changes cheaply. */
+const getThemeSignal = (): string => {
+  const root = document.documentElement;
+  return root.dataset.immersiveTheme
+    ?? getComputedStyle(root).getPropertyValue('--background').trim();
 };
 
 export const TextEditorModal: React.FC<TextEditorModalProps> = ({
@@ -138,6 +167,8 @@ export const TextEditorModal: React.FC<TextEditorModalProps> = ({
   onSave,
   editorWordWrap,
   onToggleWordWrap,
+  hotkeyScheme,
+  keyBindings,
 }) => {
   const { t } = useI18n();
   const { readClipboardText: readClipboardTextFromBridge } = useClipboardBackend();
@@ -158,49 +189,64 @@ export const TextEditorModal: React.FC<TextEditorModalProps> = ({
     document.documentElement.classList.contains('dark')
   );
 
-  // Track background color for custom theme
-  const [bgColor, setBgColor] = useState(() => getBackgroundColor());
+  // Track a signal that changes whenever immersive-mode or base theme colors change
+  const [themeSignal, setThemeSignal] = useState(() => getThemeSignal());
 
   // Custom theme name
   const customThemeName = isDarkTheme ? 'netcatty-dark' : 'netcatty-light';
 
-  // Define and update custom Monaco themes based on UI background color
+  // Define and update custom Monaco themes — syncs with immersive-mode / base UI colors
   useEffect(() => {
     if (!monaco) return;
 
-    // Define dark theme with custom background
+    const colors = getEditorColors(isDarkTheme);
+
+    const themeColors: Record<string, string> = {
+      'editor.background': colors.bg,
+      'editor.foreground': colors.fg,
+      'editorCursor.foreground': colors.primary,
+      'editor.selectionBackground': colors.primary + '40',
+      'editor.inactiveSelectionBackground': colors.primary + '25',
+      'editorLineNumber.foreground': colors.mutedFg,
+      'editorLineNumber.activeForeground': colors.fg,
+      'editor.lineHighlightBackground': colors.fg + '08',
+      'editorWidget.background': colors.card,
+      'editorWidget.foreground': colors.fg,
+      'editorWidget.border': colors.border,
+      'input.background': colors.card,
+      'input.foreground': colors.fg,
+      'input.border': colors.border,
+    };
+
     monaco.editor.defineTheme('netcatty-dark', {
       base: 'vs-dark',
       inherit: true,
       rules: [],
-      colors: {
-        'editor.background': bgColor,
-      },
+      colors: themeColors,
     });
 
-    // Define light theme with custom background
     monaco.editor.defineTheme('netcatty-light', {
       base: 'vs',
       inherit: true,
       rules: [],
-      colors: {
-        'editor.background': bgColor,
-      },
+      colors: themeColors,
     });
 
-    // Apply the current theme
     monaco.editor.setTheme(customThemeName);
-  }, [monaco, isDarkTheme, bgColor, customThemeName]);
+  }, [monaco, isDarkTheme, themeSignal, customThemeName]);
 
-  // Listen for theme changes via MutationObserver on <html> class and style
+  // Listen for theme changes via MutationObserver on <html> class, style, and immersive data attr
   useEffect(() => {
     const root = document.documentElement;
     const updateTheme = () => {
       setIsDarkTheme(root.classList.contains('dark'));
-      setBgColor(getBackgroundColor());
+      setThemeSignal(getThemeSignal());
     };
     const observer = new MutationObserver(updateTheme);
-    observer.observe(root, { attributes: true, attributeFilter: ['class', 'style'] });
+    observer.observe(root, {
+      attributes: true,
+      attributeFilter: ['class', 'style', 'data-immersive-theme'],
+    });
     return () => observer.disconnect();
   }, []);
 
@@ -216,6 +262,11 @@ export const TextEditorModal: React.FC<TextEditorModalProps> = ({
     setHasChanges(content !== initialContent);
   }, [content, initialContent]);
 
+  const closeTabBinding = useMemo(
+    () => keyBindings.find((binding) => binding.action === 'closeTab'),
+    [keyBindings],
+  );
+
   const handleSave = useCallback(async () => {
     if (saving) return;
     setSaving(true);
@@ -347,8 +398,33 @@ export const TextEditorModal: React.FC<TextEditorModalProps> = ({
       }
       void handlePasteRef.current();
     });
+
+    editor.focus();
   }, []);
 
+  useEffect(() => {
+    if (!open) return;
+
+    const frame = window.requestAnimationFrame(() => {
+      editorRef.current?.focus();
+    });
+
+    return () => window.cancelAnimationFrame(frame);
+  }, [open]);
+
+  const handleDialogKeyDownCapture = useCallback((e: React.KeyboardEvent<HTMLDivElement>) => {
+    if (hotkeyScheme === 'disabled' || !closeTabBinding) return;
+
+    const isMac = hotkeyScheme === 'mac';
+    const keyStr = isMac ? closeTabBinding.mac : closeTabBinding.pc;
+    if (!matchesKeyBinding(e.nativeEvent, keyStr, isMac)) return;
+
+    e.preventDefault();
+    e.stopPropagation();
+    e.nativeEvent.stopPropagation();
+    handleClose();
+  }, [closeTabBinding, handleClose, hotkeyScheme]);
+
   // Trigger search dialog
   const handleSearch = useCallback(() => {
     if (editorRef.current) {
@@ -370,7 +446,12 @@ export const TextEditorModal: React.FC<TextEditorModalProps> = ({
 
   return (
     <Dialog open={open} onOpenChange={(isOpen) => !isOpen && handleClose()}>
-      <DialogContent className="max-w-5xl h-[85vh] flex flex-col p-0 gap-0" hideCloseButton>
+      <DialogContent
+        className="max-w-5xl h-[85vh] flex flex-col p-0 gap-0"
+        hideCloseButton
+        data-hotkey-close-tab="true"
+        onKeyDownCapture={handleDialogKeyDownCapture}
+      >
         {/* Header */}
         <DialogHeader className="px-4 py-3 border-b border-border/60 flex-shrink-0">
           <div className="flex items-center justify-between gap-4">

components/ThemeList.tsx

@@ -0,0 +1,161 @@
+/**
+ * Shared theme list component used by both ThemeSelectPanel and ThemeSelectModal
+ */
+import React, { memo, useMemo } from 'react';
+import { Check } from 'lucide-react';
+import { useI18n } from '../application/i18n/I18nProvider';
+import { TERMINAL_THEMES, USER_VISIBLE_TERMINAL_THEMES, isUiMatchTerminalThemeId } from '../infrastructure/config/terminalThemes';
+import { useCustomThemes } from '../application/state/customThemeStore';
+import { cn } from '../lib/utils';
+import { TerminalTheme } from '../types';
+
+// Memoized theme item component
+export const ThemeItem = memo(({
+    theme,
+    isSelected,
+    onSelect
+}: {
+    theme: TerminalTheme;
+    isSelected: boolean;
+    onSelect: (id: string) => void;
+}) => (
+    <button
+        onClick={() => onSelect(theme.id)}
+        className={cn(
+            'w-full flex items-center gap-3 px-3 py-2.5 text-left transition-all',
+            isSelected
+                ? 'bg-primary/10'
+                : 'hover:bg-muted'
+        )}
+    >
+        {/* Color swatch preview */}
+        <div
+            className="w-12 h-8 rounded-[4px] flex-shrink-0 flex flex-col justify-center items-start pl-1.5 gap-0.5 border border-border/50"
+            style={{ backgroundColor: theme.colors.background }}
+        >
+            <div className="h-1 w-4 rounded-full" style={{ backgroundColor: theme.colors.green }} />
+            <div className="h-1 w-6 rounded-full" style={{ backgroundColor: theme.colors.blue }} />
+            <div className="h-1 w-3 rounded-full" style={{ backgroundColor: theme.colors.yellow }} />
+        </div>
+        <div className="flex-1 min-w-0">
+            <div className={cn('text-sm font-medium truncate', isSelected ? 'text-primary' : 'text-foreground')}>
+                {theme.name}
+            </div>
+            <div className="text-[10px] text-muted-foreground capitalize">{theme.type}</div>
+        </div>
+        {isSelected && (
+            <Check size={16} className="text-primary flex-shrink-0" />
+        )}
+    </button>
+));
+ThemeItem.displayName = 'ThemeItem';
+
+interface ThemeListProps {
+    selectedThemeId: string;
+    onSelect: (themeId: string) => void;
+}
+
+export const ThemeList: React.FC<ThemeListProps> = ({ selectedThemeId, onSelect }) => {
+    const { t } = useI18n();
+    const customThemes = useCustomThemes();
+    const deletedSelectedTheme = useMemo(
+        () => (selectedThemeId
+            && !isUiMatchTerminalThemeId(selectedThemeId)
+            && !TERMINAL_THEMES.some((theme) => theme.id === selectedThemeId)
+            && !customThemes.some((theme) => theme.id === selectedThemeId)
+            ? selectedThemeId
+            : null),
+        [customThemes, selectedThemeId],
+    );
+    const hiddenSelectedTheme = useMemo(
+        () => (isUiMatchTerminalThemeId(selectedThemeId)
+            ? TERMINAL_THEMES.find(theme => theme.id === selectedThemeId) || null
+            : null),
+        [selectedThemeId],
+    );
+
+    const { darkThemes, lightThemes } = useMemo(() => {
+        const dark = USER_VISIBLE_TERMINAL_THEMES.filter(t => t.type === 'dark');
+        const light = USER_VISIBLE_TERMINAL_THEMES.filter(t => t.type === 'light');
+        return { darkThemes: dark, lightThemes: light };
+    }, []);
+
+    return (
+        <>
+            {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">
+                        {t('terminal.hiddenTheme.title')}
+                    </div>
+                    <div className="text-sm font-medium text-foreground">{hiddenSelectedTheme.name}</div>
+                    <div className="text-[11px] text-muted-foreground mt-1">
+                        {t('terminal.hiddenTheme.desc')}
+                    </div>
+                </div>
+            )}
+            {deletedSelectedTheme && (
+                <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">
+                        Missing Theme
+                    </div>
+                    <div className="text-sm font-medium text-foreground">{deletedSelectedTheme}</div>
+                    <div className="text-[11px] text-muted-foreground mt-1">
+                        This custom theme is no longer available. Pick another theme to replace it.
+                    </div>
+                </div>
+            )}
+            {/* Dark Themes Section */}
+            <div className="mb-4">
+                <div className="text-[10px] uppercase tracking-wider text-muted-foreground mb-2 font-semibold px-3">
+                    {t('settings.terminal.themeModal.darkThemes')}
+                </div>
+                <div className="space-y-1">
+                    {darkThemes.map(theme => (
+                        <ThemeItem
+                            key={theme.id}
+                            theme={theme}
+                            isSelected={selectedThemeId === theme.id}
+                            onSelect={onSelect}
+                        />
+                    ))}
+                </div>
+            </div>
+
+            {/* Light Themes Section */}
+            <div>
+                <div className="text-[10px] uppercase tracking-wider text-muted-foreground mb-2 font-semibold px-3">
+                    {t('settings.terminal.themeModal.lightThemes')}
+                </div>
+                <div className="space-y-1">
+                    {lightThemes.map(theme => (
+                        <ThemeItem
+                            key={theme.id}
+                            theme={theme}
+                            isSelected={selectedThemeId === theme.id}
+                            onSelect={onSelect}
+                        />
+                    ))}
+                </div>
+            </div>
+
+            {/* Custom Themes Section */}
+            {customThemes.length > 0 && (
+                <div className="mt-4">
+                    <div className="text-[10px] uppercase tracking-wider text-muted-foreground mb-2 font-semibold px-3">
+                        {t('terminal.customTheme.section')}
+                    </div>
+                    <div className="space-y-1">
+                        {customThemes.map(theme => (
+                            <ThemeItem
+                                key={theme.id}
+                                theme={theme}
+                                isSelected={selectedThemeId === theme.id}
+                                onSelect={onSelect}
+                            />
+                        ))}
+                    </div>
+                </div>
+            )}
+        </>
+    );
+};

components/ThemeSelectPanel.tsx

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

components/TopTabs.tsx

@@ -10,6 +10,7 @@ import { getEffectiveHostDistro } from '../domain/host';
 import { cn } from '../lib/utils';
 import { Host, TerminalSession, Workspace } from '../types';
 import { DISTRO_LOGOS, DISTRO_COLORS } from './DistroAvatar';
+import { getShellIconPath, isMonochromeShellIcon } from '../lib/useDiscoveredShells';
 import { Button } from './ui/button';
 import { ContextMenu, ContextMenuContent, ContextMenuItem, ContextMenuTrigger } from './ui/context-menu';
 import { SyncStatusButton } from './SyncStatusButton';
@@ -20,6 +21,7 @@ const dragRegionNoSelect = { WebkitAppRegion: 'drag', userSelect: 'none' } as Re
 
 interface TopTabsProps {
   theme: 'dark' | 'light';
+  followAppTerminalTheme?: boolean;
   hosts: Host[];
   sessions: TerminalSession[];
   orphanSessions: TerminalSession[];
@@ -54,7 +56,7 @@ const localOsId = (() => {
 })();
 
 // Lightweight OS/distro icon for session tabs — matches DistroAvatar "sm" style
-const SessionTabIcon: React.FC<{ host: Host | undefined; isActive: boolean; protocol?: string }> = memo(({ host, isActive, protocol }) => {
+const SessionTabIcon: React.FC<{ host: Host | undefined; isActive: boolean; protocol?: string; shellIcon?: string }> = memo(({ host, isActive, protocol, shellIcon }) => {
   const boxBase = "shrink-0 h-4 w-4 rounded flex items-center justify-center";
   const iconSize = "h-2.5 w-2.5";
   const fallbackStyle = { color: isActive ? 'var(--top-tabs-accent, hsl(var(--accent)))' : 'var(--top-tabs-muted, hsl(var(--muted-foreground)))' };
@@ -68,8 +70,19 @@ const SessionTabIcon: React.FC<{ host: Host | undefined; isActive: boolean; prot
     );
   }
 
-  // Local protocol → OS-specific icon (protocol may be undefined for local sessions)
+  // Local protocol → shell-specific icon if available, else OS-specific icon
   if (protocol === 'local' || host?.protocol === 'local' || (!protocol && !host)) {
+    // Use shell icon from discovery when available
+    const iconId = shellIcon || host?.localShellIcon;
+    if (iconId) {
+      return (
+        <img
+          src={getShellIconPath(iconId)}
+          alt={iconId}
+          className={cn("shrink-0 h-4 w-4 object-contain", isMonochromeShellIcon(iconId) && "dark:invert")}
+        />
+      );
+    }
     const logo = DISTRO_LOGOS[localOsId];
     const bg = DISTRO_COLORS[localOsId] || DISTRO_COLORS.default;
     if (logo) {
@@ -215,6 +228,7 @@ WindowControls.displayName = 'WindowControls';
 
 const TopTabsInner: React.FC<TopTabsProps> = ({
   theme,
+  followAppTerminalTheme = false,
   hosts,
   sessions,
   orphanSessions,
@@ -522,7 +536,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
                 {activeTabId === session.id && (
                   <div
                     className="absolute top-0 left-0 right-0 h-[2px]"
-                    style={{ backgroundColor: 'var(--top-tabs-fg, hsl(var(--foreground)))' }}
+                    style={{ backgroundColor: 'var(--top-tabs-accent, hsl(var(--accent)))' }}
                   />
                 )}
                 {/* Drop indicator line - before */}
@@ -540,7 +554,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
                   />
                 )}
                 <div className="flex items-center gap-2 min-w-0 flex-1">
-                  <SessionTabIcon host={hostMap.get(session.hostId)} isActive={activeTabId === session.id} protocol={session.protocol} />
+                  <SessionTabIcon host={hostMap.get(session.hostId)} isActive={activeTabId === session.id} protocol={session.protocol} shellIcon={session.localShellIcon} />
                   <span className="truncate">{session.hostLabel}</span>
                   <div className="flex-shrink-0">{sessionStatusDot(session.status, hasActivity)}</div>
                 </div>
@@ -621,7 +635,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
                 {isActive && (
                   <div
                     className="absolute top-0 left-0 right-0 h-[2px]"
-                    style={{ backgroundColor: 'var(--top-tabs-fg, hsl(var(--foreground)))' }}
+                    style={{ backgroundColor: 'var(--top-tabs-accent, hsl(var(--accent)))' }}
                   />
                 )}
                 {/* Drop indicator line - before */}
@@ -753,6 +767,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
   return (
     <div
       data-top-tabs-root
+      data-section="top-tabs"
       className="relative w-full bg-secondary app-drag"
       style={{
         ...dragRegionNoSelect,
@@ -923,7 +938,7 @@ const TopTabsInner: React.FC<TopTabsProps> = ({
             className="h-6 w-6 app-no-drag"
             style={{ color: 'var(--top-tabs-muted, hsl(var(--muted-foreground)))' }}
             onClick={onToggleTheme}
-            disabled={isImmersiveActive}
+            disabled={isImmersiveActive && !followAppTerminalTheme}
             title="Toggle theme"
           >
             {theme === 'dark' ? <Sun size={16} /> : <Moon size={16} />}
@@ -952,6 +967,8 @@ const topTabsAreEqual = (prev: TopTabsProps, next: TopTabsProps): boolean => {
     prev.isMacClient === next.isMacClient &&
     prev.onOpenSettings === next.onOpenSettings &&
     prev.onSyncNow === next.onSyncNow &&
+    prev.onToggleTheme === next.onToggleTheme &&
+    prev.followAppTerminalTheme === next.followAppTerminalTheme &&
     prev.isImmersiveActive === next.isImmersiveActive
   );
 };

components/TrayPanel.tsx

@@ -10,6 +10,7 @@ import { I18nProvider } from "../application/i18n/I18nProvider";
 import { useSettingsState } from "../application/state/useSettingsState";
 import { useTrayPanelBackend } from "../application/state/useTrayPanelBackend";
 import { useActiveTabId } from "../application/state/activeTabStore";
+import { resolveGroupDefaults, applyGroupDefaults } from "../domain/groupConfig";
 import { X, Maximize2, ChevronRight, ChevronDown, Power } from "lucide-react";
 import { AppLogo } from "./AppLogo";
 
@@ -116,7 +117,7 @@ const TrayPanelContent: React.FC = () => {
     onTrayPanelMenuData,
   } = useTrayPanelBackend();
 
-  const { hosts, keys, identities } = useVaultState();
+  const { hosts, keys, identities, groupConfigs } = useVaultState();
   useSessionState();
   const { rules: portForwardingRules, startTunnel, stopTunnel } = usePortForwardingState();
   const activeTabId = useActiveTabId();
@@ -326,14 +327,17 @@ const TrayPanelContent: React.FC = () => {
                     disabled={isConnecting}
                     title={label}
                     onClick={() => {
-                      const host = rule.hostId ? hosts.find((h) => h.id === rule.hostId) : undefined;
-                      if (!host) {
+                      const rawHost = rule.hostId ? hosts.find((h) => h.id === rule.hostId) : undefined;
+                      if (!rawHost) {
                         toast.error(t("pf.error.hostNotFound"));
                         return;
                       }
                       if (isActive) {
                         void stopTunnel(rule.id);
                       } else {
+                        const host = rawHost.group
+                          ? applyGroupDefaults(rawHost, resolveGroupDefaults(rawHost.group, groupConfigs))
+                          : rawHost;
                         void startTunnel(rule, host, hosts, keys, identities, (status, error) => {
                           if (status === "error" && error) toast.error(error);
                         }, rule.autoStart);

components/ai/AgentIconBadge.tsx

@@ -11,6 +11,7 @@ type AgentLike = {
 
 type AgentIconKey =
   | 'catty'
+  | 'copilot'
   | 'openai'
   | 'claude'
   | 'anthropic'
@@ -20,7 +21,7 @@ type AgentIconKey =
   | 'openrouter'
   | 'zed'
   | 'atom'
-| 'terminal'
+  | 'terminal'
   | 'plus';
 
 type AgentIconVisual = {
@@ -35,6 +36,11 @@ const AGENT_ICON_VISUALS: Record<AgentIconKey, AgentIconVisual> = {
     badgeClassName: 'border-violet-500/20 bg-violet-500/10',
     imageClassName: 'object-contain dark:brightness-0 dark:invert opacity-90',
   },
+  copilot: {
+    src: '/ai/agents/copilot.svg',
+    badgeClassName: 'border-zinc-300 bg-white',
+    imageClassName: 'object-contain brightness-0',
+  },
   openai: {
     src: '/ai/providers/openai.svg',
     badgeClassName: 'border-emerald-500/22 bg-emerald-500/12',
@@ -115,6 +121,9 @@ function getAgentIconKey(agent: AgentLike | 'add-more'): AgentIconKey {
   if (tokens.some((token) => token.includes('claude'))) {
     return 'claude';
   }
+  if (tokens.some((token) => token.includes('copilot'))) {
+    return 'copilot';
+  }
   if (tokens.some((token) => token.includes('anthropic'))) {
     return 'anthropic';
   }
@@ -160,7 +169,8 @@ export const AgentIconBadge: React.FC<{
   variant?: 'plain' | 'badge';
   className?: string;
 }> = ({ agent, size = 'md', variant = 'badge', className }) => {
-  const visual = AGENT_ICON_VISUALS[getAgentIconKey(agent)];
+  const iconKey = getAgentIconKey(agent);
+  const visual = AGENT_ICON_VISUALS[iconKey];
   const badgeSize =
     size === 'xs'
       ? 'h-4 w-4 rounded-sm'

components/ai/AgentSelector.tsx

@@ -9,6 +9,10 @@ import { ChevronDown, RefreshCw, Plus, Settings } from 'lucide-react';
 import React, { useCallback, useMemo, useState } from 'react';
 import { cn } from '../../lib/utils';
 import { useI18n } from '../../application/i18n/I18nProvider';
+import {
+  isSettingsManagedDiscoveredAgent,
+  matchesManagedAgentConfig,
+} from '../../infrastructure/ai/managedAgents';
 import type { AgentInfo, ExternalAgentConfig, DiscoveredAgent } from '../../infrastructure/ai/types';
 import AgentIconBadge from './AgentIconBadge';
 import {
@@ -140,7 +144,12 @@ const AgentSelector: React.FC<AgentSelectorProps> = ({
   const unconfiguredDiscovered = useMemo(
     () =>
       discoveredAgents.filter(
-        (da) => !externalAgents.some((ea) => ea.command === da.command || ea.command === da.path),
+        (da) => {
+          if (isSettingsManagedDiscoveredAgent(da)) {
+            return !externalAgents.some((ea) => matchesManagedAgentConfig(ea, da.command));
+          }
+          return !externalAgents.some((ea) => ea.command === da.command || ea.command === da.path);
+        },
       ),
     [discoveredAgents, externalAgents],
   );

components/ai/ChatMessageList.tsx

@@ -238,8 +238,13 @@ const ChatMessageList: React.FC<ChatMessageListProps> = ({ messages, isStreaming
                       </MessageResponse>
                 )}
 
-                {/* Tool calls */}
-                {message.toolCalls?.map((tc) => {
+                {/* Pending tool calls from the *last* assistant message are rendered
+                    after all tool-result messages (see below) for chronological order.
+                    Unresolved tool calls from earlier or cancelled messages are shown
+                    inline — as interrupted, or with approval controls if still pending. */}
+                {(message !== lastAssistantMessage || message.executionStatus === 'cancelled') && message.toolCalls?.filter((tc) =>
+                  !resolvedToolCallIds.has(tc.id),
+                ).map((tc) => {
                   const isPending = pendingApprovals.has(tc.id);
                   const resolved = resolvedApprovals.get(tc.id);
                   const approvalStatus = isPending
@@ -249,14 +254,12 @@ const ChatMessageList: React.FC<ChatMessageListProps> = ({ messages, isStreaming
                       : resolved === false
                         ? 'denied' as const
                         : undefined;
-
                   return (
                     <ToolCall
                       key={tc.id}
                       name={tc.name}
                       args={tc.arguments}
-                      isLoading={isThisStreaming && message.executionStatus === 'running' && !isPending}
-                      isInterrupted={message.executionStatus === 'cancelled' && !resolvedToolCallIds.has(tc.id)}
+                      isInterrupted={!isPending}
                       approvalStatus={approvalStatus}
                       onApprove={() => handleApprove(tc.id)}
                       onReject={() => handleReject(tc.id)}
@@ -290,6 +293,33 @@ const ChatMessageList: React.FC<ChatMessageListProps> = ({ messages, isStreaming
           );
         })}
 
+        {/* Pending tool calls from the last assistant message — rendered here
+            (after all tool-result messages) so they appear at the bottom. */}
+        {lastAssistantMessage?.toolCalls?.filter((tc) =>
+          !resolvedToolCallIds.has(tc.id) && lastAssistantMessage.executionStatus !== 'cancelled',
+        ).map((tc) => {
+          const isPending = pendingApprovals.has(tc.id);
+          const resolved = resolvedApprovals.get(tc.id);
+          const approvalStatus = isPending
+            ? 'pending' as const
+            : resolved === true
+              ? 'approved' as const
+              : resolved === false
+                ? 'denied' as const
+                : undefined;
+          return (
+            <ToolCall
+              key={tc.id}
+              name={tc.name}
+              args={tc.arguments}
+              isLoading={isStreaming && lastAssistantMessage.executionStatus === 'running' && !isPending}
+              approvalStatus={approvalStatus}
+              onApprove={() => handleApprove(tc.id)}
+              onReject={() => handleReject(tc.id)}
+            />
+          );
+        })}
+
         {/* Standalone MCP/ACP approval requests (not tied to SDK tool calls) */}
         {Array.from(pendingApprovals.entries())
           .filter((entry) => entry[0].startsWith('mcp_approval_') && (!activeSessionId || entry[1].chatSessionId === activeSessionId))

components/ai/hooks/useAIChatStreaming.ts

@@ -14,6 +14,7 @@ import React, { useCallback, useEffect, useRef, useState } from 'react';
 import { streamText, stepCountIs, type ModelMessage } from 'ai';
 import type {
   AIPermissionMode,
+  AIToolIntegrationMode,
   AISession,
   ChatMessage,
   ChatMessageAttachment,
@@ -112,6 +113,13 @@ export interface PanelBridge extends NetcattyBridge {
   aiSyncProviders?: (providers: Array<{ id: string; providerId: string; apiKey?: string; baseURL?: string; enabled: boolean }>) => Promise<{ ok: boolean }>;
   aiSyncWebSearch?: (apiHost: string | null, apiKey: string | null) => Promise<{ ok: boolean }>;
   aiMcpUpdateSessions?: (sessions: TerminalSessionInfo[], chatSessionId?: string) => Promise<unknown>;
+  aiAcpListModels?: (
+    acpCommand: string,
+    acpArgs?: string[],
+    cwd?: string,
+    providerId?: string,
+    chatSessionId?: string,
+  ) => Promise<{ ok: boolean; models?: Array<{ id: string; name: string; description?: string }>; currentModelId?: string | null; error?: string }>;
   aiAcpCleanup?: (chatSessionId: string) => Promise<{ ok: boolean }>;
   [key: string]: ((...args: unknown[]) => unknown) | undefined;
 }
@@ -130,6 +138,10 @@ export interface TerminalSessionInfo {
   connected: boolean;
 }
 
+export interface DefaultTargetSessionHint extends TerminalSessionInfo {
+  source: 'scope-target' | 'only-connected-in-scope';
+}
+
 /** Typed accessor for the netcatty bridge on the window object. */
 export function getNetcattyBridge(): PanelBridge | undefined {
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
@@ -235,8 +247,10 @@ export interface SendToExternalContext {
   updateExternalSessionId?: (sessionId: string, externalSessionId: string | undefined) => void;
   historyMessages?: Array<{ role: 'user' | 'assistant'; content: string }>;
   terminalSessions: TerminalSessionInfo[];
+  defaultTargetSession?: DefaultTargetSessionHint;
   providers: ProviderConfig[];
   selectedAgentModel?: string;
+  toolIntegrationMode: AIToolIntegrationMode;
 }
 
 // -------------------------------------------------------------------
@@ -628,6 +642,8 @@ export function useAIChatStreaming({
         context.existingSessionId,
         context.historyMessages,
         attachedImages.length > 0 ? attachedImages : undefined,
+        context.toolIntegrationMode,
+        context.defaultTargetSession,
       );
     } else {
       // Fallback: spawn as raw process

components/host-details/ChainPanel.tsx

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

components/host-details/CreateGroupPanel.tsx

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

components/host-details/EnvVarsPanel.tsx

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

components/host-details/ProxyPanel.tsx

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

components/port-forwarding/WizardContent.tsx

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

components/settings/ThemeSelectModal.tsx

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

components/settings/tabs/SettingsAITab.tsx

@@ -8,16 +8,21 @@
  *   - SafetySettings
  */
 import { Bot, Globe } from "lucide-react";
-import React, { useCallback, useEffect, useMemo, useState } from "react";
+import React, { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import type {
   AIPermissionMode,
   AIProviderId,
+  AIToolIntegrationMode,
   ExternalAgentConfig,
   ProviderConfig,
   WebSearchConfig,
 } from "../../../infrastructure/ai/types";
+import {
+  getManagedAgentStoredPath,
+  matchesManagedAgentConfig,
+  type ManagedAgentKey,
+} from "../../../infrastructure/ai/managedAgents";
 import { PROVIDER_PRESETS } from "../../../infrastructure/ai/types";
-import { useAgentDiscovery } from "../../../application/state/useAgentDiscovery";
 import { useI18n } from "../../../application/i18n/I18nProvider";
 import { TabsContent } from "../../ui/tabs";
 import { Select, SettingRow } from "../settings-ui";
@@ -38,6 +43,7 @@ import { ProviderCard } from "./ai/ProviderCard";
 import { AddProviderDropdown } from "./ai/AddProviderDropdown";
 import { CodexConnectionCard } from "./ai/CodexConnectionCard";
 import { ClaudeCodeCard } from "./ai/ClaudeCodeCard";
+import { CopilotCliCard } from "./ai/CopilotCliCard";
 import { SafetySettings } from "./ai/SafetySettings";
 import { WebSearchSettings } from "./ai/WebSearchSettings";
 
@@ -56,6 +62,8 @@ interface SettingsAITabProps {
   setActiveModelId: (id: string) => void;
   globalPermissionMode: AIPermissionMode;
   setGlobalPermissionMode: (mode: AIPermissionMode) => void;
+  toolIntegrationMode: AIToolIntegrationMode;
+  setToolIntegrationMode: (mode: AIToolIntegrationMode) => void;
   externalAgents: ExternalAgentConfig[];
   setExternalAgents: (value: ExternalAgentConfig[] | ((prev: ExternalAgentConfig[]) => ExternalAgentConfig[])) => void;
   defaultAgentId: string;
@@ -70,6 +78,54 @@ interface SettingsAITabProps {
   setWebSearchConfig: (config: WebSearchConfig | null) => void;
 }
 
+function areExternalAgentListsEqual(
+  left: ExternalAgentConfig[],
+  right: ExternalAgentConfig[],
+): boolean {
+  if (left.length !== right.length) return false;
+  return left.every((agent, index) => JSON.stringify(agent) === JSON.stringify(right[index]));
+}
+
+function buildManagedAgentState(
+  prevAgents: ExternalAgentConfig[],
+  defaultAgentId: string,
+  agentKey: ManagedAgentKey,
+  pathInfo: AgentPathInfo | null,
+): { agents: ExternalAgentConfig[]; defaultAgentId: string } {
+  const managedId = `discovered_${agentKey}`;
+  const managedAgents = prevAgents.filter((agent) => matchesManagedAgentConfig(agent, agentKey));
+  const otherAgents = prevAgents.filter((agent) => !matchesManagedAgentConfig(agent, agentKey));
+  const storedPath = getManagedAgentStoredPath(prevAgents, agentKey);
+
+  if (!pathInfo?.available || !pathInfo.path) {
+    return {
+      agents: storedPath ? prevAgents : otherAgents,
+      defaultAgentId: storedPath
+        ? defaultAgentId
+        : managedAgents.some((agent) => agent.id === defaultAgentId)
+          ? "catty"
+          : defaultAgentId,
+    };
+  }
+
+  const existingManaged = managedAgents.find((agent) => agent.id === managedId);
+  const defaults = AGENT_DEFAULTS[agentKey];
+  const nextManagedAgent: ExternalAgentConfig = {
+    ...existingManaged,
+    ...defaults,
+    id: managedId,
+    command: pathInfo.path,
+    enabled: managedAgents.length === 0 ? true : managedAgents.some((agent) => agent.enabled),
+  };
+
+  return {
+    agents: [...otherAgents, nextManagedAgent],
+    defaultAgentId: managedAgents.some((agent) => agent.id === defaultAgentId)
+      ? managedId
+      : defaultAgentId,
+  };
+}
+
 // ---------------------------------------------------------------------------
 // Main Tab Component
 // ---------------------------------------------------------------------------
@@ -85,6 +141,8 @@ const SettingsAITab: React.FC<SettingsAITabProps> = ({
   setActiveModelId,
   globalPermissionMode,
   setGlobalPermissionMode,
+  toolIntegrationMode,
+  setToolIntegrationMode,
   externalAgents,
   setExternalAgents,
   defaultAgentId,
@@ -113,58 +171,44 @@ const SettingsAITab: React.FC<SettingsAITabProps> = ({
   const [claudePathInfo, setClaudePathInfo] = useState<AgentPathInfo | null>(null);
   const [claudeCustomPath, setClaudeCustomPath] = useState("");
   const [isResolvingClaude, setIsResolvingClaude] = useState(false);
+  const initialManagedPathsRef = useRef<{
+    codex: string;
+    claude: string;
+    copilot: string;
+  } | null>(null);
+  if (!initialManagedPathsRef.current) {
+    initialManagedPathsRef.current = {
+      codex: getManagedAgentStoredPath(externalAgents, "codex") ?? "",
+      claude: getManagedAgentStoredPath(externalAgents, "claude") ?? "",
+      copilot: getManagedAgentStoredPath(externalAgents, "copilot") ?? "",
+    };
+  }
 
-  const {
-    discoveredAgents,
-    isDiscovering,
-    enableAgent,
-  } = useAgentDiscovery(externalAgents, setExternalAgents);
+  const [copilotPathInfo, setCopilotPathInfo] = useState<AgentPathInfo | null>(null);
+  const [copilotCustomPath, setCopilotCustomPath] = useState("");
+  const [isResolvingCopilot, setIsResolvingCopilot] = useState(false);
 
-  // Derive path info from discovery results
-  useEffect(() => {
-    if (isDiscovering) return;
+  // Ref to read current defaultAgentId without adding it as a dependency.
+  const defaultAgentIdRef = useRef(defaultAgentId);
+  defaultAgentIdRef.current = defaultAgentId;
 
-    const codex = discoveredAgents.find((a) => a.command === "codex");
-    setCodexPathInfo(
-      codex
-        ? { path: codex.path, version: codex.version, available: true }
-        : { path: null, version: null, available: false },
-    );
-
-    const claude = discoveredAgents.find((a) => a.command === "claude");
-    setClaudePathInfo(
-      claude
-        ? { path: claude.path, version: claude.version, available: true }
-        : { path: null, version: null, available: false },
-    );
-  }, [isDiscovering, discoveredAgents]);
-
-  // Auto-register discovered agents in externalAgents
-  useEffect(() => {
-    if (isDiscovering || discoveredAgents.length === 0) return;
-
-    setExternalAgents((prev) => {
-      const agentsToRegister: ExternalAgentConfig[] = [];
-
-      for (const da of discoveredAgents) {
-        if (da.command !== "codex" && da.command !== "claude") continue;
-        const agentId = `discovered_${da.command}`;
-        if (prev.some((ea) => ea.id === agentId)) continue;
-        agentsToRegister.push(enableAgent(da));
-      }
-
-      return agentsToRegister.length > 0 ? [...prev, ...agentsToRegister] : prev;
-    });
-  }, [isDiscovering, discoveredAgents, enableAgent, setExternalAgents]);
-
-  // Validate a custom path for an agent
-  const handleCheckCustomPath = useCallback(async (agentKey: "codex" | "claude") => {
+  const resolveAgentPath = useCallback(async (
+    agentKey: ManagedAgentKey,
+    customPath = "",
+  ) => {
     const bridge = getBridge();
-    if (!bridge?.aiResolveCli) return;
+    if (!bridge?.aiResolveCli) return null;
 
-    const customPath = agentKey === "codex" ? codexCustomPath : claudeCustomPath;
-    const setInfo = agentKey === "codex" ? setCodexPathInfo : setClaudePathInfo;
-    const setResolving = agentKey === "codex" ? setIsResolvingCodex : setIsResolvingClaude;
+    const setInfo = agentKey === "codex"
+      ? setCodexPathInfo
+      : agentKey === "claude"
+        ? setClaudePathInfo
+        : setCopilotPathInfo;
+    const setResolving = agentKey === "codex"
+      ? setIsResolvingCodex
+      : agentKey === "claude"
+        ? setIsResolvingClaude
+        : setIsResolvingCopilot;
 
     setResolving(true);
     try {
@@ -174,32 +218,48 @@ const SettingsAITab: React.FC<SettingsAITabProps> = ({
       });
       setInfo(result);
 
-      // Register/update in externalAgents if valid
-      if (result.available && result.path) {
-        const agentId = `discovered_${agentKey}`;
-        const defaults = AGENT_DEFAULTS[agentKey];
-        setExternalAgents((prev) => {
-          const idx = prev.findIndex((a) => a.id === agentId);
-          const config: ExternalAgentConfig = {
-            id: agentId,
-            command: result.path!,
-            enabled: true,
-            ...defaults,
-          };
-          if (idx >= 0) {
-            const updated = [...prev];
-            updated[idx] = { ...updated[idx], command: result.path! };
-            return updated;
-          }
-          return [...prev, config];
-        });
+      // Consolidate managed agent entries using the callback form of
+      // setExternalAgents so we never depend on externalAgents directly.
+      // All three agents resolve concurrently on mount — React runs
+      // state updater callbacks sequentially, so updating the ref inside
+      // ensures later calls see earlier defaultAgentId changes.
+      let nextDefaultId: string | null = null;
+      setExternalAgents((prev) => {
+        const state = buildManagedAgentState(prev, defaultAgentIdRef.current, agentKey, result);
+        if (state.defaultAgentId !== defaultAgentIdRef.current) {
+          nextDefaultId = state.defaultAgentId;
+          defaultAgentIdRef.current = state.defaultAgentId;
+        }
+        return areExternalAgentListsEqual(prev, state.agents) ? prev : state.agents;
+      });
+      if (nextDefaultId !== null) {
+        setDefaultAgentId(nextDefaultId);
       }
+
+      return result;
     } catch (err) {
       console.error("Path resolution failed:", err);
+      return null;
     } finally {
       setResolving(false);
     }
-  }, [codexCustomPath, claudeCustomPath, setExternalAgents]);
+  }, [setExternalAgents, setDefaultAgentId]);
+
+  useEffect(() => {
+    void resolveAgentPath("codex", initialManagedPathsRef.current?.codex ?? "");
+    void resolveAgentPath("claude", initialManagedPathsRef.current?.claude ?? "");
+    void resolveAgentPath("copilot", initialManagedPathsRef.current?.copilot ?? "");
+  }, [resolveAgentPath]);
+
+  // Validate a custom path for an agent
+  const handleCheckCustomPath = useCallback(async (agentKey: ManagedAgentKey) => {
+    const customPath = agentKey === "codex"
+      ? codexCustomPath
+      : agentKey === "claude"
+        ? claudeCustomPath
+        : copilotCustomPath;
+    await resolveAgentPath(agentKey, customPath);
+  }, [claudeCustomPath, codexCustomPath, copilotCustomPath, resolveAgentPath]);
 
   // Add a new provider from preset
   const handleAddProvider = useCallback(
@@ -457,7 +517,7 @@ const SettingsAITab: React.FC<SettingsAITabProps> = ({
 
             <CodexConnectionCard
               pathInfo={codexPathInfo}
-              isResolvingPath={isDiscovering || isResolvingCodex}
+              isResolvingPath={isResolvingCodex}
               customPath={codexCustomPath}
               onCustomPathChange={setCodexCustomPath}
               onRecheckPath={() => void handleCheckCustomPath("codex")}
@@ -483,13 +543,29 @@ const SettingsAITab: React.FC<SettingsAITabProps> = ({
 
             <ClaudeCodeCard
               pathInfo={claudePathInfo}
-              isResolvingPath={isDiscovering || isResolvingClaude}
+              isResolvingPath={isResolvingClaude}
               customPath={claudeCustomPath}
               onCustomPathChange={setClaudeCustomPath}
               onRecheckPath={() => void handleCheckCustomPath("claude")}
             />
           </div>
 
+          {/* -- GitHub Copilot CLI Section -- */}
+          <div className="space-y-4">
+            <div className="flex items-center gap-2">
+              <ProviderIconBadge providerId="copilot" size="sm" />
+              <h3 className="text-base font-medium">{t('ai.copilot.title')}</h3>
+            </div>
+
+            <CopilotCliCard
+              pathInfo={copilotPathInfo}
+              isResolvingPath={isResolvingCopilot}
+              customPath={copilotCustomPath}
+              onCustomPathChange={setCopilotCustomPath}
+              onRecheckPath={() => void handleCheckCustomPath("copilot")}
+            />
+          </div>
+
           {/* -- Default Agent Section -- */}
           {agentOptions.length > 1 && (
             <div className="space-y-4">
@@ -507,13 +583,37 @@ const SettingsAITab: React.FC<SettingsAITabProps> = ({
                     value={defaultAgentId}
                     options={agentOptions}
                     onChange={setDefaultAgentId}
-                    className="w-48"
+                    className="w-64"
                   />
                 </SettingRow>
               </div>
             </div>
           )}
 
+          <div className="space-y-4">
+            <div className="flex items-center gap-2">
+              <Bot size={18} className="text-muted-foreground" />
+              <h3 className="text-base font-medium">{t('ai.toolAccess.title')}</h3>
+            </div>
+
+            <div className="bg-muted/30 rounded-lg p-4">
+              <SettingRow
+                label={t('ai.toolAccess.mode')}
+                description={t('ai.toolAccess.description')}
+              >
+                <Select
+                  value={toolIntegrationMode}
+                  options={[
+                    { value: 'mcp', label: t('ai.toolAccess.mode.mcp') },
+                    { value: 'skills', label: t('ai.toolAccess.mode.skills') },
+                  ]}
+                  onChange={(value) => setToolIntegrationMode(value as AIToolIntegrationMode)}
+                  className="w-48"
+                />
+              </SettingRow>
+            </div>
+          </div>
+
           {/* -- Web Search Section -- */}
           <WebSearchSettings
             webSearchConfig={webSearchConfig}

components/settings/tabs/SettingsAppearanceTab.tsx

@@ -7,6 +7,8 @@ import { SUPPORTED_UI_LOCALES } from "../../../infrastructure/config/i18n";
 import { cn } from "../../../lib/utils";
 import { SectionHeader, SettingsTabContent, SettingRow, Toggle, Select } from "../settings-ui";
 import { FontSelect } from "../FontSelect";
+import { STORAGE_KEY_SHOW_RECENT_HOSTS } from "../../../infrastructure/config/storageKeys";
+import { useStoredBoolean } from "../../../application/state/useStoredBoolean";
 
 export default function SettingsAppearanceTab(props: {
   theme: "dark" | "light" | "system";
@@ -25,8 +27,6 @@ export default function SettingsAppearanceTab(props: {
   setUiLanguage: (language: string) => void;
   customCSS: string;
   setCustomCSS: (css: string) => void;
-  isImmersive?: boolean;
-  onToggleImmersive?: () => void;
 }) {
   const { t } = useI18n();
   const availableUIFonts = useAvailableUIFonts();
@@ -47,10 +47,13 @@ export default function SettingsAppearanceTab(props: {
     setUiLanguage,
     customCSS,
     setCustomCSS,
-    isImmersive,
-    onToggleImmersive,
   } = props;
 
+  const [showRecentHosts, setShowRecentHosts] = useStoredBoolean(
+    STORAGE_KEY_SHOW_RECENT_HOSTS,
+    true,
+  );
+
   const getHslStyle = useCallback((hsl: string) => ({ backgroundColor: `hsl(${hsl})` }), []);
 
   const hexToHsl = useCallback((hex: string) => {
@@ -258,16 +261,13 @@ export default function SettingsAppearanceTab(props: {
         </SettingRow>
       </div>
 
-      <SectionHeader title={t("settings.appearance.immersiveMode")} />
+      <SectionHeader title={t("settings.vault.title")} />
       <div className="space-y-0 divide-y divide-border rounded-lg border bg-card px-4">
         <SettingRow
-          label={t("settings.appearance.immersiveMode")}
-          description={t("settings.appearance.immersiveMode.desc")}
+          label={t('settings.vault.showRecentHosts')}
+          description={t('settings.vault.showRecentHostsDesc')}
         >
-          <Toggle
-            checked={!!isImmersive}
-            onChange={() => onToggleImmersive?.()}
-          />
+          <Toggle checked={showRecentHosts} onChange={setShowRecentHosts} />
         </SettingRow>
       </div>
 

components/settings/tabs/SettingsTerminalTab.tsx

@@ -7,14 +7,16 @@ import type {
   TerminalEmulationType,
   TerminalSettings,
 } from "../../../domain/models";
-import { DEFAULT_KEYWORD_HIGHLIGHT_RULES } from "../../../domain/models";
+import { DEFAULT_KEYWORD_HIGHLIGHT_RULES, type KeywordHighlightRule } from "../../../domain/models";
 import { useI18n } from "../../../application/i18n/I18nProvider";
 import { MAX_FONT_SIZE, MIN_FONT_SIZE, type TerminalFont } from "../../../infrastructure/config/fonts";
 import { TERMINAL_THEMES } from "../../../infrastructure/config/terminalThemes";
 import { customThemeStore, useCustomThemes } from "../../../application/state/customThemeStore";
 import { parseItermcolors } from "../../../infrastructure/parsers/itermcolorsParser";
 import { cn } from "../../../lib/utils";
+import { useDiscoveredShells } from "../../../lib/useDiscoveredShells";
 import { Button } from "../../ui/button";
+import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle } from "../../ui/dialog";
 import { Input } from "../../ui/input";
 import { Label } from "../../ui/label";
 import { SectionHeader, Select, SettingsTabContent, SettingRow, Toggle } from "../settings-ui";
@@ -23,6 +25,193 @@ import { TerminalFontSelect } from "../TerminalFontSelect";
 import { CustomThemeModal } from "../../terminal/CustomThemeModal";
 import type { TerminalTheme } from "../../../domain/models";
 
+// Keyword highlight rules editor for global settings
+const DEFAULT_NEW_RULE_COLOR = '#F87171';
+
+const AddCustomRuleDialog: React.FC<{
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  editRule?: KeywordHighlightRule | null;
+  onAdd: (rule: KeywordHighlightRule) => void;
+}> = ({ open, onOpenChange, editRule, onAdd }) => {
+  const { t } = useI18n();
+  const [label, setLabel] = useState('');
+  const [pattern, setPattern] = useState('');
+  const [color, setColor] = useState(DEFAULT_NEW_RULE_COLOR);
+  const [patternError, setPatternError] = useState<string | null>(null);
+
+  const reset = () => { setLabel(''); setPattern(''); setColor(DEFAULT_NEW_RULE_COLOR); setPatternError(null); };
+
+  // Populate form when editing
+  useEffect(() => {
+    if (open && editRule) {
+      setLabel(editRule.label);
+      setPattern(editRule.patterns[0] || '');
+      setColor(editRule.color);
+      setPatternError(null);
+    } else if (!open) {
+      reset();
+    }
+  }, [open, editRule]);
+
+  const handleSubmit = () => {
+    if (!label.trim() || !pattern.trim()) return;
+    try { new RegExp(pattern, 'gi'); } catch {
+      setPatternError(t('settings.terminal.keywordHighlight.invalidPattern'));
+      return;
+    }
+    // When editing, replace only the first pattern and keep any additional ones
+    const patterns = editRule
+      ? [pattern, ...editRule.patterns.slice(1)]
+      : [pattern];
+    onAdd({ id: editRule?.id ?? crypto.randomUUID(), label: label.trim(), patterns, color, enabled: editRule?.enabled ?? true });
+    reset();
+    onOpenChange(false);
+  };
+
+  return (
+    <Dialog open={open} onOpenChange={(v) => { if (!v) reset(); onOpenChange(v); }}>
+      <DialogContent className="sm:max-w-[400px]">
+        <DialogHeader>
+          <DialogTitle>{editRule ? t('settings.terminal.keywordHighlight.editCustom') : t('settings.terminal.keywordHighlight.addCustom')}</DialogTitle>
+        </DialogHeader>
+        <div className="space-y-3 py-2">
+          <div className="space-y-1.5">
+            <Label className="text-xs">{t('settings.terminal.keywordHighlight.labelField')}</Label>
+            <div className="flex gap-2">
+              <Input
+                placeholder={t('settings.terminal.keywordHighlight.labelPlaceholder')}
+                value={label}
+                onChange={(e) => setLabel(e.target.value)}
+                className="flex-1"
+              />
+              <label className="relative flex-shrink-0">
+                <input type="color" value={color} onChange={(e) => setColor(e.target.value)} className="sr-only" />
+                <span className="block w-9 h-9 rounded-md cursor-pointer border border-border/50 hover:border-border" style={{ backgroundColor: color }} />
+              </label>
+            </div>
+          </div>
+          <div className="space-y-1.5">
+            <Label className="text-xs">{t('settings.terminal.keywordHighlight.patternField')}</Label>
+            <Input
+              placeholder={t('settings.terminal.keywordHighlight.patternPlaceholder')}
+              value={pattern}
+              onChange={(e) => { setPattern(e.target.value); if (patternError) setPatternError(null); }}
+              onKeyDown={(e) => { if (e.key === 'Enter') handleSubmit(); }}
+              className={cn("font-mono", patternError && "border-destructive")}
+            />
+            {patternError && <div className="text-xs text-destructive">{patternError}</div>}
+          </div>
+          {label.trim() && pattern.trim() && !patternError && (
+            <div className="flex items-center gap-2 p-2 rounded-md bg-muted/50">
+              <span className="text-xs text-muted-foreground">{t('settings.terminal.keywordHighlight.preview')}:</span>
+              <span className="text-sm font-medium" style={{ color }}>{label}</span>
+            </div>
+          )}
+        </div>
+        <DialogFooter>
+          <Button variant="outline" onClick={() => { reset(); onOpenChange(false); }}>{t('common.cancel')}</Button>
+          <Button onClick={handleSubmit} disabled={!label.trim() || !pattern.trim()}>{editRule ? t('common.save') : t('common.add')}</Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+};
+
+const KeywordHighlightRulesEditor: React.FC<{
+  rules: KeywordHighlightRule[];
+  onChange: (rules: KeywordHighlightRule[]) => void;
+}> = ({ rules, onChange }) => {
+  const { t } = useI18n();
+  const [addDialogOpen, setAddDialogOpen] = useState(false);
+  const [editingRule, setEditingRule] = useState<KeywordHighlightRule | null>(null);
+
+  const isBuiltIn = (id: string) => DEFAULT_KEYWORD_HIGHLIGHT_RULES.some((r) => r.id === id);
+
+  return (
+    <div className="space-y-2.5">
+      {rules.map((rule) => {
+        const custom = !isBuiltIn(rule.id);
+        return (
+          <div key={rule.id} className="flex items-center gap-2 group">
+            <div className="flex-1 min-w-0 flex items-center gap-1.5">
+              <span className={cn("text-sm truncate", !rule.enabled && "text-muted-foreground line-through")} style={rule.enabled ? { color: rule.color } : undefined}>
+                {rule.label}
+              </span>
+              {custom && (
+                <>
+                  <Pencil
+                    size={10}
+                    className="flex-shrink-0 opacity-0 group-hover:opacity-100 transition-opacity text-muted-foreground cursor-pointer"
+                    onClick={() => { setEditingRule(rule); setAddDialogOpen(true); }}
+                  />
+                  <Trash2
+                    size={10}
+                    className="flex-shrink-0 opacity-0 group-hover:opacity-100 transition-opacity text-muted-foreground cursor-pointer"
+                    onClick={() => onChange(rules.filter((r) => r.id !== rule.id))}
+                  />
+                </>
+              )}
+            </div>
+            <label className="relative flex-shrink-0">
+              <input
+                type="color"
+                value={rule.color}
+                onChange={(e) => onChange(rules.map((r) => r.id === rule.id ? { ...r, color: e.target.value } : r))}
+                className="sr-only"
+              />
+              <span
+                className="block w-8 h-5 rounded cursor-pointer border border-border/50 hover:border-border transition-colors"
+                style={{ backgroundColor: rule.color }}
+              />
+            </label>
+          </div>
+        );
+      })}
+
+      <div className="flex pt-2 mt-2 border-t border-border/50">
+        <Button
+          variant="ghost"
+          size="sm"
+          className="flex-1 text-muted-foreground hover:text-foreground"
+          onClick={() => setAddDialogOpen(true)}
+        >
+          <Plus size={14} className="mr-1.5" />
+          {t('settings.terminal.keywordHighlight.addCustom')}
+        </Button>
+        <Button
+          variant="ghost"
+          size="sm"
+          className="flex-1 text-muted-foreground hover:text-foreground"
+          onClick={() => {
+            onChange(rules.map((rule) => {
+              const def = DEFAULT_KEYWORD_HIGHLIGHT_RULES.find((r) => r.id === rule.id);
+              return def ? { ...rule, color: def.color } : rule;
+            }));
+          }}
+        >
+          <RotateCcw size={14} className="mr-1.5" />
+          {t("settings.terminal.keywordHighlight.resetColors")}
+        </Button>
+      </div>
+
+      <AddCustomRuleDialog
+        open={addDialogOpen}
+        onOpenChange={(v) => { setAddDialogOpen(v); if (!v) setEditingRule(null); }}
+        editRule={editingRule}
+        onAdd={(rule) => {
+          if (editingRule) {
+            onChange(rules.map((r) => r.id === editingRule.id ? rule : r));
+          } else {
+            onChange([...rules, rule]);
+          }
+          setEditingRule(null);
+        }}
+      />
+    </div>
+  );
+};
+
 // Theme preview button component
 const ThemePreviewButton: React.FC<{
   theme: (typeof TERMINAL_THEMES)[0];
@@ -74,6 +263,8 @@ const ThemePreviewButton: React.FC<{
 export default function SettingsTerminalTab(props: {
   terminalThemeId: string;
   setTerminalThemeId: (id: string) => void;
+  followAppTerminalTheme: boolean;
+  setFollowAppTerminalTheme: (value: boolean) => void;
   terminalFontFamilyId: string;
   setTerminalFontFamilyId: (id: string) => void;
   terminalFontSize: number;
@@ -90,6 +281,8 @@ export default function SettingsTerminalTab(props: {
   const {
     terminalThemeId,
     setTerminalThemeId,
+    followAppTerminalTheme,
+    setFollowAppTerminalTheme,
     terminalFontFamilyId,
     setTerminalFontFamilyId,
     terminalFontSize,
@@ -106,6 +299,20 @@ export default function SettingsTerminalTab(props: {
   const [defaultShell, setDefaultShell] = useState<string>("");
   const [shellValidation, setShellValidation] = useState<{ valid: boolean; message?: string } | null>(null);
   const [dirValidation, setDirValidation] = useState<{ valid: boolean; message?: string } | null>(null);
+
+  const discoveredShells = useDiscoveredShells();
+  const [showCustomShellInput, setShowCustomShellInput] = useState(() => {
+    if (!terminalSettings.localShell) return false;
+    return !discoveredShells.some(s => s.id === terminalSettings.localShell);
+  });
+  const [customShellModalOpen, setCustomShellModalOpen] = useState(false);
+  const [customShellDraft, setCustomShellDraft] = useState("");
+
+  // Update showCustomShellInput once discovered shells load
+  useEffect(() => {
+    if (!terminalSettings.localShell) return;
+    setShowCustomShellInput(!discoveredShells.some(s => s.id === terminalSettings.localShell));
+  }, [discoveredShells, terminalSettings.localShell]);
   const [themeModalOpen, setThemeModalOpen] = useState(false);
 
   // Subscribe to custom theme changes so editing in-place triggers re-render
@@ -210,7 +417,7 @@ export default function SettingsTerminalTab(props: {
     }
   }, []);
 
-  // Validate shell path when it changes
+  // Validate shell path when it changes (only for custom paths, not discovered shell ids)
   useEffect(() => {
     const bridge = (window as unknown as { netcatty?: NetcattyBridge }).netcatty;
     const shellPath = terminalSettings.localShell;
@@ -220,6 +427,12 @@ export default function SettingsTerminalTab(props: {
       return;
     }
 
+    // Skip validation for discovered shell ids — only validate custom paths
+    if (discoveredShells.some(s => s.id === shellPath)) {
+      setShellValidation(null);
+      return;
+    }
+
     if (!bridge?.validatePath) {
       setShellValidation(null);
       return;
@@ -240,7 +453,7 @@ export default function SettingsTerminalTab(props: {
     }, 300);
 
     return () => clearTimeout(timeoutId);
-  }, [terminalSettings.localShell, t]);
+  }, [terminalSettings.localShell, discoveredShells, t]);
 
   // Validate directory path when it changes
   useEffect(() => {
@@ -282,11 +495,24 @@ export default function SettingsTerminalTab(props: {
   return (
     <SettingsTabContent value="terminal">
       <SectionHeader title={t("settings.terminal.section.theme")} />
-      <ThemePreviewButton
-        theme={currentTheme}
-        onClick={() => setThemeModalOpen(true)}
-        buttonLabel={t("settings.terminal.theme.selectButton")}
-      />
+      <div className="rounded-lg border bg-card px-4">
+        <SettingRow
+          label={t("settings.terminal.theme.followApp")}
+          description={t("settings.terminal.theme.followApp.desc")}
+        >
+          <Toggle
+            checked={followAppTerminalTheme}
+            onChange={setFollowAppTerminalTheme}
+          />
+        </SettingRow>
+      </div>
+      {!followAppTerminalTheme && (
+        <ThemePreviewButton
+          theme={currentTheme}
+          onClick={() => setThemeModalOpen(true)}
+          buttonLabel={t("settings.terminal.theme.selectButton")}
+        />
+      )}
 
       <ThemeSelectModal
         open={themeModalOpen}
@@ -694,47 +920,10 @@ export default function SettingsTerminalTab(props: {
           />
         </div>
         {terminalSettings.keywordHighlightEnabled && (
-          <div className="space-y-2.5">
-            {terminalSettings.keywordHighlightRules.map((rule) => (
-              <div key={rule.id} className="flex items-center justify-between">
-                <span className="text-sm" style={{ color: rule.color }}>
-                  {rule.label}
-                </span>
-                <label className="relative">
-                  <input
-                    type="color"
-                    value={rule.color}
-                    onChange={(e) => {
-                      const newRules = terminalSettings.keywordHighlightRules.map((r) =>
-                        r.id === rule.id ? { ...r, color: e.target.value } : r,
-                      );
-                      updateTerminalSetting("keywordHighlightRules", newRules);
-                    }}
-                    className="sr-only"
-                  />
-                  <span
-                    className="block w-10 h-6 rounded-md cursor-pointer border border-border/50 hover:border-border transition-colors"
-                    style={{ backgroundColor: rule.color }}
-                  />
-                </label>
-              </div>
-            ))}
-            <Button
-              variant="ghost"
-              size="sm"
-              className="w-full mt-3 text-muted-foreground hover:text-foreground"
-              onClick={() => {
-                const resetRules = terminalSettings.keywordHighlightRules.map((rule) => {
-                  const defaultRule = DEFAULT_KEYWORD_HIGHLIGHT_RULES.find((r) => r.id === rule.id);
-                  return defaultRule ? { ...rule, color: defaultRule.color } : rule;
-                });
-                updateTerminalSetting("keywordHighlightRules", resetRules);
-              }}
-            >
-              <RotateCcw size={14} className="mr-2" />
-              {t("settings.terminal.keywordHighlight.resetColors")}
-            </Button>
-          </div>
+          <KeywordHighlightRulesEditor
+            rules={terminalSettings.keywordHighlightRules}
+            onChange={(rules) => updateTerminalSetting("keywordHighlightRules", rules)}
+          />
         )}
       </div>
 
@@ -745,24 +934,43 @@ export default function SettingsTerminalTab(props: {
           description={t("settings.terminal.localShell.shell.desc")}
         >
           <div className="flex flex-col gap-1 items-end">
-            <Input
-              value={terminalSettings.localShell}
-              placeholder={t("settings.terminal.localShell.shell.placeholder")}
-              onChange={(e) => updateTerminalSetting("localShell", e.target.value)}
-              className={cn(
-                "w-48",
-                shellValidation && !shellValidation.valid && "border-destructive focus-visible:ring-destructive"
-              )}
-            />
-            {defaultShell && !terminalSettings.localShell && (
-              <span className="text-xs text-muted-foreground">
-                {t("settings.terminal.localShell.shell.detected")}: {defaultShell}
+            <select
+              className="h-9 w-48 rounded-md border border-input bg-background px-3 text-sm"
+              value={
+                showCustomShellInput
+                  ? "__custom__"
+                  : terminalSettings.localShell || ""
+              }
+              onChange={(e) => {
+                const value = e.target.value;
+                if (value === "__custom__") {
+                  setCustomShellDraft(terminalSettings.localShell || "");
+                  setCustomShellModalOpen(true);
+                } else {
+                  setShowCustomShellInput(false);
+                  updateTerminalSetting("localShell", value);
+                }
+              }}
+            >
+              <option value="">
+                {t("settings.terminal.localShell.shell.default")}
+                {defaultShell ? ` (${defaultShell.split(/[/\\]/).pop()})` : ""}
+              </option>
+              {discoveredShells.map((shell) => (
+                <option key={shell.id} value={shell.id}>
+                  {shell.name}
+                </option>
+              ))}
+              <option value="__custom__">{t("settings.terminal.localShell.shell.custom")}</option>
+            </select>
+            {showCustomShellInput && (
+              <span className="text-xs text-muted-foreground truncate max-w-48">
+                {terminalSettings.localShell}
               </span>
             )}
-            {shellValidation && !shellValidation.valid && shellValidation.message && (
-              <span className="text-xs text-destructive flex items-center gap-1">
-                <AlertCircle size={12} />
-                {shellValidation.message}
+            {!showCustomShellInput && defaultShell && !terminalSettings.localShell && (
+              <span className="text-xs text-muted-foreground">
+                {t("settings.terminal.localShell.shell.detected")}: {defaultShell}
               </span>
             )}
           </div>
@@ -862,9 +1070,9 @@ export default function SettingsTerminalTab(props: {
             options={[
               { value: "auto", label: t("settings.terminal.rendering.auto") },
               { value: "webgl", label: "WebGL" },
-              { value: "canvas", label: "Canvas" },
+              { value: "dom", label: "DOM" },
             ]}
-            onChange={(v) => updateTerminalSetting("rendererType", v as "auto" | "webgl" | "canvas")}
+            onChange={(v) => updateTerminalSetting("rendererType", v as "auto" | "webgl" | "dom")}
             className="w-32"
           />
         </SettingRow>
@@ -919,6 +1127,73 @@ export default function SettingsTerminalTab(props: {
           />
         </SettingRow>
       </div>
+      {/* Custom Shell Modal */}
+      <Dialog open={customShellModalOpen} onOpenChange={setCustomShellModalOpen}>
+        <DialogContent className="sm:max-w-[480px]">
+          <DialogHeader>
+            <DialogTitle>{t("settings.terminal.localShell.shell.custom")}</DialogTitle>
+          </DialogHeader>
+          <div className="space-y-4 py-2">
+            <div className="space-y-2">
+              <label className="text-sm font-medium">{t("settings.terminal.localShell.shell.customPath")}</label>
+              <Input
+                value={customShellDraft}
+                placeholder={t("settings.terminal.localShell.shell.placeholder")}
+                onChange={(e) => setCustomShellDraft(e.target.value)}
+                className="w-full"
+                autoFocus
+              />
+              {shellValidation && !shellValidation.valid && shellValidation.message && (
+                <span className="text-xs text-destructive flex items-center gap-1">
+                  <AlertCircle size={12} />
+                  {shellValidation.message}
+                </span>
+              )}
+              {shellValidation?.valid && (
+                <span className="text-xs text-emerald-600 dark:text-emerald-400 flex items-center gap-1">
+                  ✓ {t("settings.terminal.localShell.shell.pathValid")}
+                </span>
+              )}
+            </div>
+            <div className="space-y-1.5">
+              <label className="text-xs text-muted-foreground">{t("settings.terminal.localShell.shell.commonPaths")}</label>
+              <div className="flex flex-wrap gap-1.5">
+                {["/bin/bash", "/bin/zsh", "/usr/bin/fish", "/bin/sh", "powershell.exe", "pwsh.exe", "cmd.exe"].map((p) => (
+                  <button
+                    key={p}
+                    type="button"
+                    onClick={() => setCustomShellDraft(p)}
+                    className="text-xs px-2 py-1 rounded-md border border-border bg-muted/50 hover:bg-muted transition-colors"
+                  >
+                    {p}
+                  </button>
+                ))}
+              </div>
+            </div>
+          </div>
+          <DialogFooter>
+            <button
+              type="button"
+              onClick={() => setCustomShellModalOpen(false)}
+              className="px-3 py-1.5 text-sm rounded-md border border-border hover:bg-muted transition-colors"
+            >
+              {t("common.cancel")}
+            </button>
+            <button
+              type="button"
+              onClick={() => {
+                updateTerminalSetting("localShell", customShellDraft);
+                setShowCustomShellInput(true);
+                setCustomShellModalOpen(false);
+              }}
+              disabled={!customShellDraft.trim()}
+              className="px-3 py-1.5 text-sm rounded-md bg-primary text-primary-foreground hover:bg-primary/90 transition-colors disabled:opacity-50"
+            >
+              {t("common.save")}
+            </button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
     </SettingsTabContent>
   );
 }

components/settings/tabs/ai/CopilotCliCard.tsx

@@ -0,0 +1,87 @@
+import React from "react";
+import { RefreshCw } from "lucide-react";
+import { useI18n } from "../../../../application/i18n/I18nProvider";
+import { Button } from "../../../ui/button";
+import { cn } from "../../../../lib/utils";
+import type { AgentPathInfo } from "./types";
+import { ProviderIconBadge } from "./ProviderIconBadge";
+
+export const CopilotCliCard: React.FC<{
+  pathInfo: AgentPathInfo | null;
+  isResolvingPath: boolean;
+  customPath: string;
+  onCustomPathChange: (path: string) => void;
+  onRecheckPath: () => void;
+}> = ({
+  pathInfo,
+  isResolvingPath,
+  customPath,
+  onCustomPathChange,
+  onRecheckPath,
+}) => {
+  const { t } = useI18n();
+  const found = pathInfo?.available;
+
+  const statusText = isResolvingPath
+    ? t('ai.copilot.detecting')
+    : found
+      ? t('ai.copilot.detected')
+      : t('ai.copilot.notFound');
+
+  const statusClassName = isResolvingPath
+    ? "text-muted-foreground"
+    : found
+      ? "text-emerald-500"
+      : "text-amber-500";
+
+  return (
+    <div className="rounded-lg border border-border/60 bg-muted/20 p-4 space-y-3">
+      <div className="flex items-start justify-between gap-4">
+        <div className="min-w-0">
+          <div className="flex items-center gap-2">
+            <ProviderIconBadge providerId="copilot" size="sm" />
+            <span className="text-sm font-medium">{t('ai.copilot.title')}</span>
+          </div>
+          <p className="text-xs text-muted-foreground mt-2 leading-5">
+            {t('ai.copilot.description')}
+          </p>
+        </div>
+        <div className={cn("text-xs font-medium shrink-0", statusClassName)}>
+          {statusText}
+        </div>
+      </div>
+
+      {found ? (
+        <div className="flex items-center gap-2 text-xs">
+          <span className="text-muted-foreground">{t('ai.copilot.path')}</span>
+          <span className="font-mono text-foreground truncate">{pathInfo.path}</span>
+          {pathInfo.version && (
+            <>
+              <span className="text-muted-foreground">|</span>
+              <span className="text-muted-foreground">{pathInfo.version}</span>
+            </>
+          )}
+        </div>
+      ) : !isResolvingPath ? (
+        <div className="space-y-2">
+          <p className="text-xs text-amber-500">
+            {t('ai.copilot.notFoundHint')}
+          </p>
+          <div className="flex items-center gap-2">
+            <input
+              type="text"
+              value={customPath}
+              onChange={(e) => onCustomPathChange(e.target.value)}
+              placeholder={t('ai.copilot.customPathPlaceholder')}
+              className="flex-1 h-8 rounded-md border border-input bg-background px-3 text-sm font-mono placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
+            />
+            <Button variant="outline" size="sm" onClick={onRecheckPath} disabled={!customPath.trim()}>
+              <RefreshCw size={14} className="mr-1.5" />
+              {t('ai.copilot.check')}
+            </Button>
+          </div>
+        </div>
+      ) : null}
+    </div>
+  );
+};

components/settings/tabs/ai/ProviderIconBadge.tsx

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

components/settings/tabs/ai/index.ts

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

components/settings/tabs/ai/types.ts

@@ -82,6 +82,13 @@ export const AGENT_DEFAULTS: Record<string, Omit<ExternalAgentConfig, "id" | "co
     acpCommand: "claude-agent-acp",
     acpArgs: [],
   },
+  copilot: {
+    name: "GitHub Copilot CLI",
+    args: ["-p", "{prompt}"],
+    icon: "copilot",
+    acpCommand: "copilot",
+    acpArgs: ["--acp", "--stdio"],
+  },
 };
 
 // ---------------------------------------------------------------------------
@@ -108,12 +115,13 @@ export function normalizeCodexBridgeError(error: unknown): string {
 // Provider icon helper
 // ---------------------------------------------------------------------------
 
-export type SettingsIconId = AIProviderId | "claude";
+export type SettingsIconId = AIProviderId | "claude" | "copilot";
 
 export const SETTINGS_ICON_PATHS: Record<SettingsIconId, string> = {
   openai: "/ai/providers/openai.svg",
   anthropic: "/ai/providers/anthropic.svg",
   claude: "/ai/agents/claude.svg",
+  copilot: "/ai/agents/copilot.svg",
   google: "/ai/providers/google.svg",
   ollama: "/ai/providers/ollama.svg",
   openrouter: "/ai/providers/openrouter.svg",
@@ -124,6 +132,7 @@ export const SETTINGS_ICON_COLORS: Record<SettingsIconId, string> = {
   openai: "bg-emerald-600",
   anthropic: "bg-orange-600",
   claude: "bg-orange-600",
+  copilot: "border border-zinc-300 bg-white",
   google: "bg-blue-600",
   ollama: "bg-purple-600",
   openrouter: "bg-pink-600",

components/sftp/SftpContext.tsx

@@ -21,6 +21,7 @@ export interface SftpTransferSource {
 export interface SftpPaneCallbacks {
     onConnect: (host: Host | "local") => void;
     onDisconnect: () => void;
+    onPrepareSelection: () => void;
     onNavigateTo: (path: string) => void;
     onNavigateUp: () => void;
     onRefresh: () => void;

components/sftp/SftpFileRow.tsx

@@ -76,8 +76,10 @@ const SftpFileRowInner: React.FC<SftpFileRowProps> = ({
             onClick={handleSelect}
             onDoubleClick={handleOpen}
             className={cn(
-                "px-4 py-2 items-center cursor-pointer text-sm hover:bg-accent/50",
-                isSelectionVisible && "bg-accent text-accent-foreground",
+                "px-4 py-2 items-center cursor-pointer text-sm",
+                isSelectionVisible
+                    ? "bg-accent text-accent-foreground hover:bg-accent"
+                    : "hover:bg-accent/50",
                 isDragOver && isNavDir && "bg-primary/25 ring-1 ring-primary/50"
             )}
             style={{ display: 'grid', gridTemplateColumns: buildSftpColumnTemplate(columnWidths) }}
@@ -130,6 +132,8 @@ const SftpFileRowInner: React.FC<SftpFileRowProps> = ({
 const areEqual = (prev: SftpFileRowProps, next: SftpFileRowProps): boolean => {
     if (prev.index !== next.index) return false;
     if (prev.isSelected !== next.isSelected) return false;
+    // Only re-render for showSelectionHighlight changes when the row is actually selected
+    if (prev.isSelected && prev.showSelectionHighlight !== next.showSelectionHighlight) return false;
     if (prev.isDragOver !== next.isDragOver) return false;
     if (prev.columnWidths.name !== next.columnWidths.name) return false;
     if (prev.columnWidths.modified !== next.columnWidths.modified) return false;

components/sftp/SftpOverlays.tsx

@@ -2,6 +2,7 @@ import React from "react";
 import type { Host, SftpFileEntry } from "../../types";
 import type { FileOpenerType, SystemAppInfo } from "../../lib/sftpFileUtils";
 import type { useSftpState } from "../../application/state/useSftpState";
+import type { HotkeyScheme, KeyBinding } from "../../domain/models";
 import FileOpenerDialog from "../FileOpenerDialog";
 import TextEditorModal from "../TextEditorModal";
 import { SftpConflictDialog, SftpHostPicker, SftpPermissionsDialog } from "./index";
@@ -35,6 +36,8 @@ interface SftpOverlaysProps {
   handleSaveTextFile: (content: string) => Promise<void>;
   editorWordWrap: boolean;
   setEditorWordWrap: (enabled: boolean) => void;
+  hotkeyScheme: HotkeyScheme;
+  keyBindings: KeyBinding[];
   showFileOpenerDialog: boolean;
   setShowFileOpenerDialog: (open: boolean) => void;
   fileOpenerTarget: { file: SftpFileEntry; side: "left" | "right"; fullPath: string } | null;
@@ -69,6 +72,8 @@ export const SftpOverlays: React.FC<SftpOverlaysProps> = React.memo(({
   handleSaveTextFile,
   editorWordWrap,
   setEditorWordWrap,
+  hotkeyScheme,
+  keyBindings,
   showFileOpenerDialog,
   setShowFileOpenerDialog,
   fileOpenerTarget,
@@ -139,6 +144,8 @@ export const SftpOverlays: React.FC<SftpOverlaysProps> = React.memo(({
         onSave={handleSaveTextFile}
         editorWordWrap={editorWordWrap}
         onToggleWordWrap={() => setEditorWordWrap(!editorWordWrap)}
+        hotkeyScheme={hotkeyScheme}
+        keyBindings={keyBindings}
       />
 
       {/* File Opener Dialog */}

components/sftp/SftpPaneDialogs.tsx

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

components/sftp/SftpPaneTreeView.tsx

@@ -44,7 +44,7 @@ import { getParentPath, joinPath } from '../../application/state/sftp/utils';
 import { buildSftpColumnTemplate, filterHiddenFiles, formatBytes, formatDate, getFileIcon, isNavigableDirectory, sortSftpEntries, type ColumnWidths, type SortField, type SortOrder } from './utils';
 import type { SftpTransferSource } from './SftpContext';
 import { sftpTreeSelectionStore, useSftpTreeSelectionState } from './hooks/useSftpTreeSelectionStore';
-import { sftpTreeEnterStore } from './hooks/useSftpKeyboardShortcuts';
+import { sftpKeyboardSelectionStore, sftpTreeEnterStore } from './hooks/useSftpKeyboardShortcuts';
 import { useI18n } from '../../application/i18n/I18nProvider';
 import { isKnownBinaryFile } from '../../lib/sftpFileUtils';
 
@@ -55,6 +55,7 @@ type NodeDescriptor =
 interface SftpPaneTreeViewProps {
   pane: SftpPane;
   side: 'left' | 'right';
+  onPrepareSelection: () => void;
   onLoadChildren: (path: string) => Promise<SftpFileEntry[]>;
   onMoveEntriesToPath: (sourcePaths: string[], targetPath: string) => Promise<void>;
   onNavigateUp: () => void;
@@ -126,8 +127,10 @@ const TreeNode = React.memo<TreeNodeProps>(({
   return (
     <div
       className={cn(
-        'grid items-center gap-x-1 px-2 cursor-pointer select-none hover:bg-accent/50 text-sm',
-        isSelected && 'bg-accent text-accent-foreground',
+        'grid items-center gap-x-1 px-2 cursor-pointer select-none text-sm',
+        isSelected
+          ? 'bg-accent text-accent-foreground hover:bg-accent'
+          : 'hover:bg-accent/50',
         isDragOver && 'ring-2 ring-primary/50 ring-inset bg-primary/10',
       )}
       style={{ gridTemplateColumns: columnTemplate, height: TREE_ROW_HEIGHT }}
@@ -257,6 +260,7 @@ interface ContextTarget {
 export const SftpPaneTreeView = React.memo<SftpPaneTreeViewProps>(({
   pane,
   side,
+  onPrepareSelection,
   onLoadChildren,
   onMoveEntriesToPath,
   onNavigateUp,
@@ -368,12 +372,21 @@ export const SftpPaneTreeView = React.memo<SftpPaneTreeViewProps>(({
   const [rootEntries, setRootEntries] = useState<SftpFileEntry[]>(pane.files ?? []);
   const [resolvedRootPath, setResolvedRootPath] = useState(pane.connection?.currentPath ?? '');
 
+  useEffect(() => {
+    if (selectedPaths.size === 0) {
+      lastClickedPathRef.current = null;
+      sftpKeyboardSelectionStore.clear(pane.id);
+    }
+  }, [pane.id, selectedPaths.size]);
+
   const onOpenEntryRef = useRef(onOpenEntry);
   onOpenEntryRef.current = onOpenEntry;
   const onNavigateUpRef = useRef(onNavigateUp);
   onNavigateUpRef.current = onNavigateUp;
   const onNavigateToRef = useRef(onNavigateTo);
   onNavigateToRef.current = onNavigateTo;
+  const onPrepareSelectionRef = useRef(onPrepareSelection);
+  onPrepareSelectionRef.current = onPrepareSelection;
   const onMoveEntriesToPathRef = useRef(onMoveEntriesToPath);
   onMoveEntriesToPathRef.current = onMoveEntriesToPath;
   const onDragStartRef = useRef(onDragStart);
@@ -508,6 +521,7 @@ export const SftpPaneTreeView = React.memo<SftpPaneTreeViewProps>(({
       invalidateTreeCache();
       dispatchTreePaths({ type: 'RESET' });
       sftpTreeSelectionStore.clearSelection(pane.id);
+      sftpKeyboardSelectionStore.clear(pane.id);
       lastClickedPathRef.current = null;
     }
   }, [pane.connection?.currentPath, pane.connection?.id, pane.id, invalidateTreeCache]);
@@ -556,11 +570,11 @@ export const SftpPaneTreeView = React.memo<SftpPaneTreeViewProps>(({
     focusTreeContainer();
 
     const state = treeSelectionStateRef.current;
+    const currentIdx = state.visibleIndexByPath.get(entryPath) ?? -1;
     const nextSelection: string[] = (() => {
       if (e.shiftKey && lastClickedPathRef.current) {
         const items = state.visibleItems;
         const lastIdx = state.visibleIndexByPath.get(lastClickedPathRef.current) ?? -1;
-        const currentIdx = state.visibleIndexByPath.get(entryPath) ?? -1;
         if (lastIdx !== -1 && currentIdx !== -1) {
           const parentPath = getParentPath(entryPath);
           const start = Math.min(lastIdx, currentIdx);
@@ -582,7 +596,16 @@ export const SftpPaneTreeView = React.memo<SftpPaneTreeViewProps>(({
       return [entryPath];
     })();
 
+    onPrepareSelectionRef.current();
     sftpTreeSelectionStore.setSelection(pane.id, nextSelection);
+    if (currentIdx !== -1) {
+      if (e.shiftKey && lastClickedPathRef.current) {
+        const anchorIdx = state.visibleIndexByPath.get(lastClickedPathRef.current) ?? currentIdx;
+        sftpKeyboardSelectionStore.set(pane.id, anchorIdx, currentIdx);
+      } else {
+        sftpKeyboardSelectionStore.set(pane.id, currentIdx, currentIdx);
+      }
+    }
 
     lastClickedPathRef.current = entryPath;
   }, [focusTreeContainer, pane.id]);
@@ -610,23 +633,33 @@ export const SftpPaneTreeView = React.memo<SftpPaneTreeViewProps>(({
 
       const delta = e.key === 'ArrowDown' ? 1 : -1;
       const currentSelected = [...selectedPathsRef.current];
-      let currentIdx = -1;
-      if (currentSelected.length === 1) {
-        currentIdx = state.visibleIndexByPath.get(currentSelected[0]) ?? -1;
+      let { anchor: anchorIdx, focus: focusIdx } = sftpKeyboardSelectionStore.get(pane.id);
+      if (currentSelected.length === 0) {
+        anchorIdx = e.shiftKey ? 0 : -1;
+        focusIdx = -1;
+      } else {
+        const focusPath = items[focusIdx]?.path;
+        if (!focusPath || !state.selectedPaths.has(focusPath)) {
+          focusIdx = state.visibleIndexByPath.get(currentSelected[currentSelected.length - 1]) ?? 0;
+          anchorIdx = focusIdx;
+          sftpKeyboardSelectionStore.set(pane.id, anchorIdx, focusIdx);
+        }
       }
 
-      let nextIdx = currentIdx + delta;
+      let nextIdx = focusIdx + delta;
       if (nextIdx < 0) nextIdx = 0;
       if (nextIdx >= items.length) nextIdx = items.length - 1;
 
+      onPrepareSelectionRef.current();
       if (e.shiftKey && currentSelected.length > 0) {
-        const anchorIdx = currentIdx >= 0 ? currentIdx : 0;
         const start = Math.min(anchorIdx, nextIdx);
         const end = Math.max(anchorIdx, nextIdx);
         const paths = items.slice(start, end + 1).map((item) => item.path);
         sftpTreeSelectionStore.setSelection(pane.id, paths);
+        sftpKeyboardSelectionStore.set(pane.id, anchorIdx, nextIdx);
       } else {
         sftpTreeSelectionStore.setSelection(pane.id, [items[nextIdx].path]);
+        sftpKeyboardSelectionStore.set(pane.id, nextIdx, nextIdx);
       }
 
       lastClickedPathRef.current = items[nextIdx].path;

components/sftp/SftpPaneView.tsx

@@ -67,25 +67,31 @@ SftpPaneWrapper.displayName = "SftpPaneWrapper";
 interface SftpPaneViewProps {
   side: "left" | "right";
   pane: SftpPane;
+  dialogActionScopeId: string;
   isPaneFocused: boolean;
   sftpDefaultViewMode: 'list' | 'tree';
   showHeader?: boolean;
   showEmptyHeader?: boolean;
   onToggleShowHiddenFiles?: () => void;
   onGoToTerminalCwd?: () => void;
+  /** When true, treat this pane as always active (used by SftpSidePanel which manages visibility itself) */
+  forceActive?: boolean;
 }
 
 const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
   side,
   pane,
+  dialogActionScopeId,
   isPaneFocused,
   sftpDefaultViewMode,
   showHeader = true,
   showEmptyHeader = true,
   onToggleShowHiddenFiles,
   onGoToTerminalCwd,
+  forceActive,
 }) => {
-  const isActive = true;
+  const activeTabId = useActiveTabId(side);
+  const isActive = forceActive || (activeTabId ? pane.id === activeTabId : true);
 
   const callbacks = useSftpPaneCallbacks(side);
   const { draggedFiles, onDragStart, onDragEnd } = useSftpDrag();
@@ -354,7 +360,7 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
     ],
   );
 
-  useSftpDialogActionHandler(side, dialogActionHandlers);
+  useSftpDialogActionHandler(side, dialogActionScopeId, dialogActionHandlers, isActive);
 
   const handleSortWithTransition = (field: typeof sortField) => {
     startTransition(() => handleSort(field));
@@ -495,6 +501,7 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
           <SftpPaneTreeView
             pane={pane}
             side={side}
+            onPrepareSelection={callbacks.onPrepareSelection}
             onLoadChildren={callbacks.onListDirectory}
             onMoveEntriesToPath={handleMoveEntriesToPath}
             onNavigateUp={callbacks.onNavigateUp}
@@ -573,6 +580,8 @@ const SftpPaneViewInner: React.FC<SftpPaneViewProps> = ({
 
       <SftpPaneDialogs
         t={t}
+        hostLabel={pane.connection?.hostLabel}
+        currentPath={pane.connection?.currentPath}
         showNewFolderDialog={showNewFolderDialog}
         setShowNewFolderDialog={setShowNewFolderDialog}
         newFolderName={newFolderName}
@@ -621,6 +630,7 @@ const sftpPaneViewAreEqual = (
 ): boolean => {
   if (prev.pane !== next.pane) return false;
   if (prev.side !== next.side) return false;
+  if (prev.dialogActionScopeId !== next.dialogActionScopeId) return false;
   if (prev.isPaneFocused !== next.isPaneFocused) return false;
   if (prev.showHeader !== next.showHeader) return false;
   if (prev.showEmptyHeader !== next.showEmptyHeader) return false;

components/sftp/SftpTabBar.tsx

@@ -214,6 +214,22 @@ const SftpTabBarInner: React.FC<SftpTabBarProps> = ({
     [onCloseTab],
   );
 
+  const handleSelectTabClick = useCallback(
+    (e: React.MouseEvent, tabId: string) => {
+      e.stopPropagation();
+      onSelectTab(tabId);
+    },
+    [onSelectTab],
+  );
+
+  const handleAddTabClick = useCallback(
+    (e: React.MouseEvent) => {
+      e.stopPropagation();
+      onAddTab();
+    },
+    [onAddTab],
+  );
+
   // Cross-pane drag handlers
   const handleCrossPaneDragOver = useCallback(
     (e: React.DragEvent) => {
@@ -302,7 +318,7 @@ const SftpTabBarInner: React.FC<SftpTabBarProps> = ({
               <div
                 key={tab.id}
                 data-tab-id={tab.id}
-                onClick={() => onSelectTab(tab.id)}
+                onClick={(e) => handleSelectTabClick(e, tab.id)}
                 draggable
                 onDragStart={(e) => handleTabDragStart(e, tab.id)}
                 onDragEnd={handleTabDragEnd}
@@ -379,7 +395,7 @@ const SftpTabBarInner: React.FC<SftpTabBarProps> = ({
       {/* Add tab button */}
       <button
         className="px-2 flex items-center justify-center text-muted-foreground hover:text-foreground hover:bg-[linear-gradient(135deg,_hsl(var(--accent)_/_0.18),_hsl(var(--primary)_/_0.18))] transition-all duration-150 border-l border-border/40 cursor-pointer"
-        onClick={onAddTab}
+        onClick={handleAddTabClick}
         title={t("sftp.tabs.addTab")}
       >
         <Plus size={14} />
@@ -418,4 +434,3 @@ const sftpTabBarAreEqual = (
 
 export const SftpTabBar = memo(SftpTabBarInner, sftpTabBarAreEqual);
 SftpTabBar.displayName = "SftpTabBar";
-

components/sftp/hooks/selectionScope.ts

@@ -0,0 +1,37 @@
+import type { SftpStateApi } from "../../../application/state/useSftpState";
+import { sftpTreeSelectionStore } from "./useSftpTreeSelectionStore";
+
+export interface SftpSelectionTarget {
+  side: "left" | "right";
+  tabId: string;
+}
+
+export const keepOnlyPaneSelections = (
+  sftp: SftpStateApi,
+  target: SftpSelectionTarget | null,
+) => {
+  sftp.clearSelectionsExcept(target);
+  const paneIds = [
+    ...sftp.leftTabs.tabs.map((tab) => tab.id),
+    ...sftp.rightTabs.tabs.map((tab) => tab.id),
+  ];
+  for (const paneId of paneIds) {
+    if (target?.tabId === paneId) continue;
+    sftpTreeSelectionStore.clearSelection(paneId);
+  }
+};
+
+export const keepOnlyActivePaneSelections = (
+  sftp: SftpStateApi,
+  side: "left" | "right",
+): SftpSelectionTarget | null => {
+  const tabId = sftp.getActiveTabId(side);
+  if (!tabId) {
+    keepOnlyPaneSelections(sftp, null);
+    return null;
+  }
+
+  const target = { side, tabId } as const;
+  keepOnlyPaneSelections(sftp, target);
+  return target;
+};

components/sftp/hooks/useSftpDialogAction.ts

@@ -13,6 +13,7 @@ type SftpDialogActionType = "rename" | "delete" | "newFolder" | "newFile" | null
 interface SftpDialogAction {
   type: SftpDialogActionType;
   targetSide: SftpFocusedSide;
+  targetScopeId: string;
   targetFiles?: string[]; // For rename (single file) or delete (multiple files)
   timestamp: number; // To distinguish different triggers of the same action
 }
@@ -37,13 +38,14 @@ export const sftpDialogActionStore = {
   /**
    * Trigger a dialog action
    */
-  trigger: (type: SftpDialogActionType, targetFiles?: string[]) => {
+  trigger: (type: SftpDialogActionType, targetScopeId: string, targetFiles?: string[]) => {
     if (!type) {
       dialogAction = null;
     } else {
       dialogAction = {
         type,
         targetSide: sftpFocusStore.getFocusedSide(),
+        targetScopeId,
         targetFiles,
         timestamp: Date.now(),
       };
@@ -82,17 +84,19 @@ export const useSftpDialogAction = (): SftpDialogAction | null => {
  */
 export const useSftpDialogActionHandler = (
   side: SftpFocusedSide,
+  scopeId: string,
   handlers: {
     onRename?: (fileName: string) => void;
     onDelete?: (fileNames: string[]) => void;
     onNewFolder?: () => void;
     onNewFile?: () => void;
-  }
+  },
+  isActive = true
 ) => {
   const action = useSftpDialogAction();
 
   useEffect(() => {
-    if (!action || action.targetSide !== side) return;
+    if (!action || action.targetSide !== side || action.targetScopeId !== scopeId || !isActive) return;
 
     // Handle the action and clear it
     switch (action.type) {
@@ -116,5 +120,5 @@ export const useSftpDialogActionHandler = (
 
     // Clear the action after handling
     sftpDialogActionStore.clear();
-  }, [action, side, handlers]);
+  }, [action, side, scopeId, handlers, isActive]);
 };

components/sftp/hooks/useSftpKeyboardShortcuts.ts

@@ -14,6 +14,7 @@ import { sftpFocusStore } from "./useSftpFocusedPane";
 import { sftpDialogActionStore } from "./useSftpDialogAction";
 import { sftpTreeSelectionStore } from "./useSftpTreeSelectionStore";
 import { sftpListOrderStore } from "./useSftpListOrderStore";
+import { keepOnlyPaneSelections } from "./selectionScope";
 import type { SftpStateApi } from "../../../application/state/useSftpState";
 import { filterHiddenFiles, isNavigableDirectory } from "../index";
 import type { SftpFileEntry } from "../../../types";
@@ -72,13 +73,15 @@ export const sftpTreeEnterStore = {
 // indices per pane so Shift+Arrow extends correctly.
 const _kbSelectionState = new Map<string, { anchor: number; focus: number }>();
 
-function getKbSelection(paneId: string) {
-  return _kbSelectionState.get(paneId) ?? { anchor: 0, focus: 0 };
-}
-
-function setKbSelection(paneId: string, anchor: number, focus: number) {
-  _kbSelectionState.set(paneId, { anchor, focus });
-}
+export const sftpKeyboardSelectionStore = {
+  get: (paneId: string) => _kbSelectionState.get(paneId) ?? { anchor: 0, focus: 0 },
+  set: (paneId: string, anchor: number, focus: number) => {
+    _kbSelectionState.set(paneId, { anchor, focus });
+  },
+  clear: (paneId: string) => {
+    _kbSelectionState.delete(paneId);
+  },
+};
 
 // Basic navigation keys that work even when custom hotkeys are disabled.
 const BASIC_NAV_KEYS: Record<string, string> = {
@@ -90,6 +93,7 @@ interface UseSftpKeyboardShortcutsParams {
   keyBindings: KeyBinding[];
   hotkeyScheme: "disabled" | "mac" | "pc";
   sftpRef: MutableRefObject<SftpStateApi>;
+  dialogActionScopeId: string;
   isActive: boolean;
 }
 
@@ -115,6 +119,7 @@ export const useSftpKeyboardShortcuts = ({
   keyBindings,
   hotkeyScheme,
   sftpRef,
+  dialogActionScopeId,
   isActive,
 }: UseSftpKeyboardShortcutsParams) => {
   const handleKeyDown = useCallback(
@@ -134,6 +139,12 @@ export const useSftpKeyboardShortcuts = ({
         return;
       }
 
+      // Skip when a dialog or overlay is open to prevent SFTP shortcuts from
+      // firing while interacting with unrelated dialogs (e.g. settings, confirm).
+      if (document.querySelector('[role="dialog"][data-state="open"]')) {
+        return;
+      }
+
       // ── Arrow Up/Down: move selection ────────────────────────────────
       if ((e.key === 'ArrowUp' || e.key === 'ArrowDown') && !e.ctrlKey && !e.metaKey && !e.altKey) {
         const sftp = sftpRef.current;
@@ -155,29 +166,35 @@ export const useSftpKeyboardShortcuts = ({
 
           // Resolve current focus position from tracked state, falling back
           // to the actual selection when out of sync (e.g. after mouse click).
-          let { anchor: anchorIdx, focus: focusIdx } = getKbSelection(pane.id);
+          let { anchor: anchorIdx, focus: focusIdx } = sftpKeyboardSelectionStore.get(pane.id);
           const currentSelected = Array.from(pane.selectedFiles) as string[];
-          // If the tracked focus doesn't match the actual selection, re-sync
-          if (currentSelected.length >= 1 && !currentSelected.includes(listItems[focusIdx])) {
+          if (currentSelected.length === 0) {
+            // No selection: start from before the list so the first arrow press lands on item 0.
+            // For Shift+Arrow, anchor at 0 so range selection starts from the first item.
+            anchorIdx = e.shiftKey ? 0 : -1;
+            focusIdx = -1;
+          } else if (!currentSelected.includes(listItems[focusIdx])) {
+            // Tracked focus doesn't match actual selection, re-sync
             focusIdx = listItems.indexOf(currentSelected[currentSelected.length - 1]);
             if (focusIdx < 0) focusIdx = 0;
             anchorIdx = focusIdx;
-            setKbSelection(pane.id, anchorIdx, focusIdx);
+            sftpKeyboardSelectionStore.set(pane.id, anchorIdx, focusIdx);
           }
 
           let nextIdx = focusIdx + delta;
           if (nextIdx < 0) nextIdx = 0;
           if (nextIdx >= listItems.length) nextIdx = listItems.length - 1;
 
+          keepOnlyPaneSelections(sftp, { side: focusedSide, tabId: pane.id });
           if (e.shiftKey) {
             // Shift+Arrow: extend range from anchor to new focus
             const start = Math.min(anchorIdx, nextIdx);
             const end = Math.max(anchorIdx, nextIdx);
             sftp.rangeSelect(focusedSide, listItems.slice(start, end + 1));
-            setKbSelection(pane.id, anchorIdx, nextIdx);
+            sftpKeyboardSelectionStore.set(pane.id, anchorIdx, nextIdx);
           } else {
             sftp.rangeSelect(focusedSide, [listItems[nextIdx]]);
-            setKbSelection(pane.id, nextIdx, nextIdx);
+            sftpKeyboardSelectionStore.set(pane.id, nextIdx, nextIdx);
           }
           return;
         }
@@ -191,26 +208,35 @@ export const useSftpKeyboardShortcuts = ({
           const currentSelected = [...treeState.selectedPaths];
 
           // Use tracked state, re-sync if needed
-          let { anchor: anchorIdx, focus: focusIdx } = getKbSelection(pane.id);
-          if (currentSelected.length >= 1 && items[focusIdx]?.path !== currentSelected[currentSelected.length - 1]) {
-            focusIdx = treeState.visibleIndexByPath.get(currentSelected[currentSelected.length - 1]) ?? 0;
-            anchorIdx = focusIdx;
-            setKbSelection(pane.id, anchorIdx, focusIdx);
+          let { anchor: anchorIdx, focus: focusIdx } = sftpKeyboardSelectionStore.get(pane.id);
+          if (currentSelected.length === 0) {
+            // No selection: start from before the list so the first arrow press lands on item 0.
+            // For Shift+Arrow, anchor at 0 so range selection starts from the first item.
+            anchorIdx = e.shiftKey ? 0 : -1;
+            focusIdx = -1;
+          } else {
+            const focusPath = items[focusIdx]?.path;
+            if (!focusPath || !treeState.selectedPaths.has(focusPath)) {
+              focusIdx = treeState.visibleIndexByPath.get(currentSelected[currentSelected.length - 1]) ?? 0;
+              anchorIdx = focusIdx;
+              sftpKeyboardSelectionStore.set(pane.id, anchorIdx, focusIdx);
+            }
           }
 
           let nextIdx = focusIdx + delta;
           if (nextIdx < 0) nextIdx = 0;
           if (nextIdx >= items.length) nextIdx = items.length - 1;
 
+          keepOnlyPaneSelections(sftp, { side: focusedSide, tabId: pane.id });
           if (e.shiftKey) {
             const start = Math.min(anchorIdx, nextIdx);
             const end = Math.max(anchorIdx, nextIdx);
             const paths = items.slice(start, end + 1).map(item => item.path);
             sftpTreeSelectionStore.setSelection(pane.id, paths);
-            setKbSelection(pane.id, anchorIdx, nextIdx);
+            sftpKeyboardSelectionStore.set(pane.id, anchorIdx, nextIdx);
           } else {
             sftpTreeSelectionStore.setSelection(pane.id, [items[nextIdx].path]);
-            setKbSelection(pane.id, nextIdx, nextIdx);
+            sftpKeyboardSelectionStore.set(pane.id, nextIdx, nextIdx);
           }
           return;
         }
@@ -350,8 +376,10 @@ export const useSftpKeyboardShortcuts = ({
           if (!clipboard || clipboard.files.length === 0) return;
 
           // Use startTransfer to paste files from source to current pane
-          // The transfer direction is determined by clipboard sourceSide and current focusedSide
-          if (clipboard.sourceSide !== focusedSide) {
+          // Allow paste when source and target are different connections, even on the same side
+          const isSameConnection = clipboard.sourceSide === focusedSide
+            && clipboard.sourceConnectionId === pane.connection.id;
+          if (!isSameConnection) {
             const sourceTabs = clipboard.sourceSide === "left" ? sftp.leftTabs.tabs : sftp.rightTabs.tabs;
             const sourcePane = sourceTabs.find((tab) => tab.connection?.id === clipboard.sourceConnectionId);
 
@@ -439,6 +467,7 @@ export const useSftpKeyboardShortcuts = ({
 
         case "sftpSelectAll": {
           if (treeSelectionState.visibleItems.length > 0) {
+            keepOnlyPaneSelections(sftp, { side: focusedSide, tabId: pane.id });
             sftpTreeSelectionStore.selectAllVisible(pane.id);
             break;
           }
@@ -458,33 +487,38 @@ export const useSftpKeyboardShortcuts = ({
           const allFileNames = visibleFiles
             .filter((f) => f.name !== "..")
             .map((f) => f.name);
+          keepOnlyPaneSelections(sftp, { side: focusedSide, tabId: pane.id });
           sftp.rangeSelect(focusedSide, allFileNames);
           break;
         }
 
         case "sftpRename": {
           if (treeActionSelection.length === 1) {
-            sftpDialogActionStore.trigger("rename", [treeActionSelection[0].path]);
+            sftpDialogActionStore.trigger("rename", dialogActionScopeId, [treeActionSelection[0].path]);
             break;
           }
 
           // Trigger rename for the first selected file
           const selectedFiles = Array.from(pane.selectedFiles) as string[];
           if (selectedFiles.length !== 1) return;
-          sftpDialogActionStore.trigger("rename", selectedFiles);
+          sftpDialogActionStore.trigger("rename", dialogActionScopeId, selectedFiles);
           break;
         }
 
         case "sftpDelete": {
           if (treeActionSelection.length > 0) {
-            sftpDialogActionStore.trigger("delete", treeActionSelection.map((entry) => entry.path));
+            sftpDialogActionStore.trigger(
+              "delete",
+              dialogActionScopeId,
+              treeActionSelection.map((entry) => entry.path),
+            );
             break;
           }
 
           // Delete selected files
           const selectedFiles = Array.from(pane.selectedFiles) as string[];
           if (selectedFiles.length === 0) return;
-          sftpDialogActionStore.trigger("delete", selectedFiles);
+          sftpDialogActionStore.trigger("delete", dialogActionScopeId, selectedFiles);
           break;
         }
 
@@ -496,7 +530,7 @@ export const useSftpKeyboardShortcuts = ({
 
         case "sftpNewFolder": {
           // Create new folder
-          sftpDialogActionStore.trigger("newFolder");
+          sftpDialogActionStore.trigger("newFolder", dialogActionScopeId);
           break;
         }
 
@@ -559,7 +593,7 @@ export const useSftpKeyboardShortcuts = ({
         }
       }
     },
-    [hotkeyScheme, isActive, keyBindings, sftpRef]
+    [dialogActionScopeId, hotkeyScheme, isActive, keyBindings, sftpRef]
   );
 
   useEffect(() => {

components/sftp/hooks/useSftpPaneDragAndSelect.ts

@@ -1,4 +1,4 @@
-import React, { useCallback, useRef, useState } from "react";
+import React, { useCallback, useEffect, useRef, useState } from "react";
 import type { SftpFileEntry } from "../../../types";
 import type { SftpPaneCallbacks, SftpDragCallbacks, SftpTransferSource } from "../SftpContext";
 import { isNavigableDirectory } from "../index";
@@ -67,6 +67,12 @@ export const useSftpPaneDragAndSelect = ({
   const onUploadRef = useRef(onUploadExternalFiles);
   onUploadRef.current = onUploadExternalFiles;
 
+  useEffect(() => {
+    if (pane.selectedFiles.size === 0) {
+      lastSelectedIndexRef.current = null;
+    }
+  }, [pane.selectedFiles.size]);
+
   const getSamePaneDragPaths = useCallback((): string[] | null => {
     const dragged = draggedFilesRef.current;
     if (!dragged || dragged.length === 0) return null;

components/sftp/hooks/useSftpTreeSelectionStore.ts

@@ -99,6 +99,17 @@ export const sftpTreeSelectionStore = {
     setPaneState(paneId, (state) => ({ ...state, selectedPaths: EMPTY_PATHS }));
   },
 
+  clearAllExcept: (paneIdsToKeep?: Iterable<string>) => {
+    const keep = new Set(paneIdsToKeep ?? []);
+    Array.from(paneStates.keys()).forEach((paneId) => {
+      if (keep.has(paneId)) return;
+      setPaneState(paneId, (state) => {
+        if (state.selectedPaths.size === 0) return state;
+        return { ...state, selectedPaths: EMPTY_PATHS };
+      });
+    });
+  },
+
   selectAllVisible: (paneId: string) => {
     setPaneState(paneId, (state) => ({
       ...state,

components/sftp/hooks/useSftpViewPaneActions.ts

@@ -2,6 +2,7 @@ import { useCallback, useMemo, useState } from "react";
 import type { MutableRefObject } from "react";
 import type { SftpStateApi } from "../../../application/state/useSftpState";
 import type { SftpDragCallbacks, SftpTransferSource } from "../SftpContext";
+import { keepOnlyActivePaneSelections } from "./selectionScope";
 
 interface UseSftpViewPaneActionsParams {
   sftpRef: MutableRefObject<SftpStateApi>;
@@ -14,6 +15,8 @@ interface UseSftpViewPaneActionsResult {
   onConnectRight: (host: Parameters<SftpStateApi["connect"]>[1]) => void;
   onDisconnectLeft: () => void;
   onDisconnectRight: () => void;
+  onPrepareSelectionLeft: () => void;
+  onPrepareSelectionRight: () => void;
   onNavigateToLeft: (path: string) => void;
   onNavigateToRight: (path: string) => void;
   onNavigateUpLeft: () => void;
@@ -126,6 +129,12 @@ export const useSftpViewPaneActions = ({
   );
   const onDisconnectLeft = useCallback(() => sftpRef.current.disconnect("left"), [sftpRef]);
   const onDisconnectRight = useCallback(() => sftpRef.current.disconnect("right"), [sftpRef]);
+  const onPrepareSelectionLeft = useCallback(() => {
+    keepOnlyActivePaneSelections(sftpRef.current, "left");
+  }, [sftpRef]);
+  const onPrepareSelectionRight = useCallback(() => {
+    keepOnlyActivePaneSelections(sftpRef.current, "right");
+  }, [sftpRef]);
   const onNavigateToLeft = useCallback(
     (path: string) => sftpRef.current.navigateTo("left", path),
     [sftpRef],
@@ -151,20 +160,32 @@ export const useSftpViewPaneActions = ({
     [sftpRef],
   );
   const onToggleSelectionLeft = useCallback(
-    (name: string, multi: boolean) => sftpRef.current.toggleSelection("left", name, multi),
-    [sftpRef],
+    (name: string, multi: boolean) => {
+      onPrepareSelectionLeft();
+      sftpRef.current.toggleSelection("left", name, multi);
+    },
+    [onPrepareSelectionLeft, sftpRef],
   );
   const onToggleSelectionRight = useCallback(
-    (name: string, multi: boolean) => sftpRef.current.toggleSelection("right", name, multi),
-    [sftpRef],
+    (name: string, multi: boolean) => {
+      onPrepareSelectionRight();
+      sftpRef.current.toggleSelection("right", name, multi);
+    },
+    [onPrepareSelectionRight, sftpRef],
   );
   const onRangeSelectLeft = useCallback(
-    (fileNames: string[]) => sftpRef.current.rangeSelect("left", fileNames),
-    [sftpRef],
+    (fileNames: string[]) => {
+      onPrepareSelectionLeft();
+      sftpRef.current.rangeSelect("left", fileNames);
+    },
+    [onPrepareSelectionLeft, sftpRef],
   );
   const onRangeSelectRight = useCallback(
-    (fileNames: string[]) => sftpRef.current.rangeSelect("right", fileNames),
-    [sftpRef],
+    (fileNames: string[]) => {
+      onPrepareSelectionRight();
+      sftpRef.current.rangeSelect("right", fileNames);
+    },
+    [onPrepareSelectionRight, sftpRef],
   );
   const onClearSelectionLeft = useCallback(() => sftpRef.current.clearSelection("left"), [sftpRef]);
   const onClearSelectionRight = useCallback(() => sftpRef.current.clearSelection("right"), [sftpRef]);
@@ -266,6 +287,8 @@ export const useSftpViewPaneActions = ({
     onConnectRight,
     onDisconnectLeft,
     onDisconnectRight,
+    onPrepareSelectionLeft,
+    onPrepareSelectionRight,
     onNavigateToLeft,
     onNavigateToRight,
     onNavigateUpLeft,

components/sftp/hooks/useSftpViewPaneCallbacks.ts

@@ -140,6 +140,7 @@ export const useSftpViewPaneCallbacks = ({
     () => ({
       onConnect: paneActions.onConnectLeft,
       onDisconnect: paneActions.onDisconnectLeft,
+      onPrepareSelection: paneActions.onPrepareSelectionLeft,
       onNavigateTo: paneActions.onNavigateToLeft,
       onNavigateUp: paneActions.onNavigateUpLeft,
       onRefresh: paneActions.onRefreshLeft,
@@ -176,6 +177,7 @@ export const useSftpViewPaneCallbacks = ({
     () => ({
       onConnect: paneActions.onConnectRight,
       onDisconnect: paneActions.onDisconnectRight,
+      onPrepareSelection: paneActions.onPrepareSelectionRight,
       onNavigateTo: paneActions.onNavigateToRight,
       onNavigateUp: paneActions.onNavigateUpRight,
       onRefresh: paneActions.onRefreshRight,

components/sftp/hooks/useSftpViewTabs.ts

@@ -21,8 +21,8 @@ interface UseSftpViewTabsResult {
   setShowHostPickerRight: React.Dispatch<React.SetStateAction<boolean>>;
   setHostSearchLeft: React.Dispatch<React.SetStateAction<string>>;
   setHostSearchRight: React.Dispatch<React.SetStateAction<string>>;
-  handleAddTabLeft: () => void;
-  handleAddTabRight: () => void;
+  handleAddTabLeft: () => string;
+  handleAddTabRight: () => string;
   handleCloseTabLeft: (tabId: string) => void;
   handleCloseTabRight: (tabId: string) => void;
   handleSelectTabLeft: (tabId: string) => void;
@@ -42,13 +42,15 @@ export const useSftpViewTabs = ({ sftp, sftpRef }: UseSftpViewTabsParams): UseSf
   const [hostSearchRight, setHostSearchRight] = useState("");
 
   const handleAddTabLeft = useCallback(() => {
-    sftpRef.current.addTab("left");
+    const tabId = sftpRef.current.addTab("left");
     setShowHostPickerLeft(true);
+    return tabId;
   }, [sftpRef]);
 
   const handleAddTabRight = useCallback(() => {
-    sftpRef.current.addTab("right");
+    const tabId = sftpRef.current.addTab("right");
     setShowHostPickerRight(true);
+    return tabId;
   }, [sftpRef]);
 
   const handleCloseTabLeft = useCallback((tabId: string) => {

components/terminal/TerminalContextMenu.tsx

@@ -75,21 +75,26 @@ export const TerminalContextMenu: React.FC<TerminalContextMenuProps> = ({
   const splitVShortcut = getShortcut('split-vertical');
   const clearShortcut = getShortcut('clear-buffer');
 
-  const showContextMenu = rightClickBehavior === 'context-menu' && !isAlternateScreen;
-
+  // Handle right-click: intercept for paste/select-word unless Shift is held
+  // or rightClickBehavior is 'context-menu'. The ContextMenuTrigger stays always
+  // enabled so Shift+Right-Click opens the menu on the first click.
   const handleRightClick = useCallback(
     (e: React.MouseEvent) => {
       // In alternate screen (tmux, vim, etc.), let the terminal application
       // handle right-click natively to avoid conflicting menus
-      if (isAlternateScreen) return;
-
-      if (rightClickBehavior === 'paste') {
+      if (isAlternateScreen) {
         e.preventDefault();
-        e.stopPropagation();
+        return;
+      }
+
+      // Shift+Right-Click or context-menu mode: let Radix open the menu
+      if (e.shiftKey || rightClickBehavior === 'context-menu') return;
+
+      // Paste / select-word: intercept and prevent the context menu
+      e.preventDefault();
+      if (rightClickBehavior === 'paste') {
         onPaste?.();
       } else if (rightClickBehavior === 'select-word') {
-        e.preventDefault();
-        e.stopPropagation();
         onSelectWord?.();
       }
     },
@@ -102,12 +107,11 @@ export const TerminalContextMenu: React.FC<TerminalContextMenuProps> = ({
     <ContextMenu>
       <ContextMenuTrigger
         asChild
-        disabled={!showContextMenu}
-        onContextMenu={!showContextMenu ? handleRightClick : undefined}
+        onContextMenu={handleRightClick}
       >
         {children}
       </ContextMenuTrigger>
-      {showContextMenu && (
+      {!isAlternateScreen && (
         <ContextMenuContent className="w-56">
           <ContextMenuItem onClick={onCopy} disabled={!hasSelection}>
             <Copy size={14} className="mr-2" />

components/terminal/ThemeCustomizeModal.tsx

@@ -15,7 +15,7 @@ import { createPortal } from 'react-dom';
 import { Check, Download, Minus, Palette, Pencil, Plus, Sparkles, Type, X } from 'lucide-react';
 import { useI18n } from '../../application/i18n/I18nProvider';
 import { useAvailableFonts } from '../../application/state/fontStore';
-import { TERMINAL_THEMES, TerminalThemeConfig } from '../../infrastructure/config/terminalThemes';
+import { TERMINAL_THEMES, TerminalThemeConfig, USER_VISIBLE_TERMINAL_THEMES, isUiMatchTerminalThemeId } from '../../infrastructure/config/terminalThemes';
 import { DEFAULT_FONT_SIZE, MIN_FONT_SIZE, MAX_FONT_SIZE, TerminalFont } from '../../infrastructure/config/fonts';
 import { useCustomThemes, useCustomThemeActions } from '../../application/state/customThemeStore';
 import { parseItermcolors } from '../../infrastructure/parsers/itermcolorsParser';
@@ -125,16 +125,21 @@ interface ThemeCustomizeModalProps {
     open: boolean;
     onClose: () => void;
     currentThemeId?: string;
+    displayThemeId?: string;
     currentFontFamilyId?: string;
     currentFontSize?: number;
     /** Called immediately when user selects a theme (for real-time preview) */
     onThemeChange?: (themeId: string) => void;
+    /** Called when the theme should return to inherited/default state */
+    onThemeReset?: () => void;
     /** Called immediately when user selects a font (for real-time preview) */
     onFontFamilyChange?: (fontFamilyId: string) => void;
     /** Called immediately when user changes font size (for real-time preview) */
     onFontSizeChange?: (fontSize: number) => void;
     /** Called when user clicks Save to persist settings */
     onSave?: () => void;
+    /** Optional live preview callback for consumers that render outside this modal */
+    onPreviewThemeChange?: (theme: TerminalTheme | null) => void;
 }
 
 // Memoized preview component to avoid re-rendering on every state change
@@ -261,26 +266,39 @@ const TerminalPreview = memo(({
 ));
 TerminalPreview.displayName = 'TerminalPreview';
 
+const cloneTheme = (theme: TerminalTheme): TerminalTheme => ({
+    ...theme,
+    colors: { ...theme.colors },
+    isCustom: true,
+});
+
+const serializeTheme = (theme: TerminalTheme): string => JSON.stringify(theme);
+
 export const ThemeCustomizeModal: React.FC<ThemeCustomizeModalProps> = ({
     open,
     onClose,
-    currentThemeId = 'termius-dark',
+    currentThemeId,
+    displayThemeId,
     currentFontFamilyId = 'menlo',
     currentFontSize = DEFAULT_FONT_SIZE,
     onThemeChange,
+    onThemeReset,
     onFontFamilyChange,
     onFontSizeChange,
     onSave,
+    onPreviewThemeChange,
 }) => {
     const { t } = useI18n();
     const availableFonts = useAvailableFonts();
     const customThemes = useCustomThemes();
     const { addTheme, updateTheme, deleteTheme } = useCustomThemeActions();
 
+    const resolvedThemeId = currentThemeId ?? displayThemeId ?? TERMINAL_THEMES[0].id;
     const [activeTab, setActiveTab] = useState<TabType>('theme');
-    const [selectedTheme, setSelectedTheme] = useState(currentThemeId);
+    const [selectedTheme, setSelectedTheme] = useState(resolvedThemeId);
     const [selectedFont, setSelectedFont] = useState(currentFontFamilyId);
     const [fontSize, setFontSize] = useState(currentFontSize);
+    const [draftCustomThemes, setDraftCustomThemes] = useState<TerminalTheme[]>(() => customThemes.map(cloneTheme));
 
     // Custom theme editor state
     const [editingTheme, setEditingTheme] = useState<TerminalTheme | null>(null);
@@ -293,30 +311,37 @@ export const ThemeCustomizeModal: React.FC<ThemeCustomizeModalProps> = ({
         font: currentFontFamilyId,
         fontSize: currentFontSize,
     });
+    const originalCustomThemesRef = useRef<TerminalTheme[]>([]);
+    const wasOpenRef = useRef(false);
 
     // Combine built-in + custom themes
     const allThemes = useMemo(
-        () => [...TERMINAL_THEMES, ...customThemes],
-        [customThemes]
+        () => [...TERMINAL_THEMES, ...draftCustomThemes],
+        [draftCustomThemes]
     );
 
     // Sync state when modal opens
     useEffect(() => {
-        if (open) {
+        if (open && !wasOpenRef.current) {
             // Store original values for potential cancel
             originalValuesRef.current = {
                 theme: currentThemeId,
                 font: currentFontFamilyId,
                 fontSize: currentFontSize,
             };
+            originalCustomThemesRef.current = customThemes.map((theme) => ({
+                ...cloneTheme(theme),
+            }));
             // Initialize selected values
-            setSelectedTheme(currentThemeId);
+            setSelectedTheme(resolvedThemeId);
             setSelectedFont(currentFontFamilyId);
             setFontSize(currentFontSize);
+            setDraftCustomThemes(customThemes.map(cloneTheme));
             setEditingTheme(null);
             setIsNewTheme(false);
         }
-    }, [open, currentThemeId, currentFontFamilyId, currentFontSize]);
+        wasOpenRef.current = open;
+    }, [open, currentThemeId, resolvedThemeId, currentFontFamilyId, currentFontSize, customThemes]);
 
     const currentFont = useMemo(
         (): TerminalFont => availableFonts.find(f => f.id === selectedFont) || availableFonts[0],
@@ -326,6 +351,16 @@ export const ThemeCustomizeModal: React.FC<ThemeCustomizeModalProps> = ({
         () => editingTheme || allThemes.find(t => t.id === selectedTheme) || TERMINAL_THEMES[0],
         [selectedTheme, allThemes, editingTheme]
     );
+    const hiddenSelectedTheme = useMemo(
+        () => (isUiMatchTerminalThemeId(selectedTheme)
+            ? TERMINAL_THEMES.find((theme) => theme.id === selectedTheme) || null
+            : null),
+        [selectedTheme]
+    );
+
+    useEffect(() => {
+        onPreviewThemeChange?.(open ? currentTheme : null);
+    }, [currentTheme, onPreviewThemeChange, open]);
 
     // Handle theme selection - apply immediately for real-time preview
     const handleThemeSelect = useCallback((themeId: string) => {
@@ -379,7 +414,7 @@ export const ThemeCustomizeModal: React.FC<ThemeCustomizeModalProps> = ({
             const xml = reader.result as string;
             const parsed = parseItermcolors(xml, name);
             if (parsed) {
-                addTheme(parsed);
+                setDraftCustomThemes((prev) => [...prev, cloneTheme(parsed)]);
                 setSelectedTheme(parsed.id);
                 onThemeChange?.(parsed.id);
                 setActiveTab('theme');
@@ -394,16 +429,16 @@ export const ThemeCustomizeModal: React.FC<ThemeCustomizeModalProps> = ({
         reader.readAsText(file);
         // Reset file input so the same file can be re-imported
         e.target.value = '';
-    }, [addTheme, onThemeChange, t]);
+    }, [onThemeChange, t]);
 
     const handleEditTheme = useCallback((themeId: string) => {
-        const theme = customThemes.find(t => t.id === themeId);
+        const theme = draftCustomThemes.find(t => t.id === themeId);
         if (theme) {
             setEditingTheme({ ...theme, colors: { ...theme.colors } });
             setIsNewTheme(false);
             setActiveTab('custom');
         }
-    }, [customThemes]);
+    }, [draftCustomThemes]);
 
 
     const handleEditorBack = useCallback(() => {
@@ -412,40 +447,63 @@ export const ThemeCustomizeModal: React.FC<ThemeCustomizeModalProps> = ({
     }, []);
 
     const handleEditorDelete = useCallback((themeId: string) => {
-        deleteTheme(themeId);
+        setDraftCustomThemes((prev) => prev.filter((theme) => theme.id !== themeId));
         if (selectedTheme === themeId) {
-            setSelectedTheme(TERMINAL_THEMES[0].id);
-            onThemeChange?.(TERMINAL_THEMES[0].id);
+            const originalThemeId = originalValuesRef.current.theme;
+            const fallbackThemeId = originalThemeId && originalThemeId !== themeId
+                ? originalThemeId
+                : (displayThemeId && displayThemeId !== themeId ? displayThemeId : USER_VISIBLE_TERMINAL_THEMES[0].id);
+            setSelectedTheme(fallbackThemeId);
+            if (originalThemeId == null && displayThemeId && displayThemeId !== themeId) {
+                onThemeReset?.();
+            } else {
+                onThemeChange?.(fallbackThemeId);
+            }
         }
         setEditingTheme(null);
         setIsNewTheme(false);
-    }, [deleteTheme, selectedTheme, onThemeChange]);
+    }, [displayThemeId, onThemeChange, onThemeReset, selectedTheme]);
 
     // Save: just close (changes are already applied)
     const handleSave = useCallback(() => {
-        // If editing a custom theme, save it first
-        if (editingTheme) {
-            if (isNewTheme) {
-                addTheme(editingTheme);
-                setSelectedTheme(editingTheme.id);
-                onThemeChange?.(editingTheme.id);
-            } else {
-                updateTheme(editingTheme.id, editingTheme);
+        const originalThemes = originalCustomThemesRef.current;
+        const originalMap = new Map(originalThemes.map((theme) => [theme.id, theme]));
+        const draftMap = new Map(draftCustomThemes.map((theme) => [theme.id, theme]));
+
+        for (const [id, originalTheme] of originalMap) {
+            if (!draftMap.has(id)) {
+                deleteTheme(id);
+                continue;
+            }
+            const nextTheme = draftMap.get(id)!;
+            if (serializeTheme(originalTheme) !== serializeTheme(nextTheme)) {
+                updateTheme(id, nextTheme);
             }
         }
+
+        for (const [id, draftTheme] of draftMap) {
+            if (!originalMap.has(id)) {
+                addTheme(draftTheme);
+            }
+        }
+
         onSave?.();
         onClose();
-    }, [editingTheme, isNewTheme, addTheme, updateTheme, onSave, onClose, onThemeChange]);
+    }, [addTheme, deleteTheme, draftCustomThemes, onClose, onSave, updateTheme]);
 
     // Cancel: revert to original values
     const handleCancel = useCallback(() => {
         const original = originalValuesRef.current;
         // Revert all changes
-        onThemeChange?.(original.theme);
+        if (original.theme) {
+            onThemeChange?.(original.theme);
+        } else {
+            onThemeReset?.();
+        }
         onFontFamilyChange?.(original.font);
         onFontSizeChange?.(original.fontSize);
         onClose();
-    }, [onThemeChange, onFontFamilyChange, onFontSizeChange, onClose]);
+    }, [onThemeChange, onThemeReset, onFontFamilyChange, onFontSizeChange, onClose]);
 
     // Handle ESC key - same as cancel, but skip when child editor is open
     useEffect(() => {
@@ -465,7 +523,7 @@ export const ThemeCustomizeModal: React.FC<ThemeCustomizeModalProps> = ({
     if (!open) return null;
 
     // Separate built-in and custom themes for display in the theme list
-    const builtinThemes = TERMINAL_THEMES;
+    const builtinThemes = USER_VISIBLE_TERMINAL_THEMES;
 
     const modalContent = (
         <div
@@ -541,6 +599,17 @@ export const ThemeCustomizeModal: React.FC<ThemeCustomizeModalProps> = ({
                             <div className="flex-1 min-h-0 overflow-y-auto p-2">
                                 {activeTab === 'theme' && (
                                     <div className="space-y-1">
+                                        {hiddenSelectedTheme && (
+                                            <div className="rounded-lg border border-border/60 bg-muted/30 px-3 py-2.5 mb-2">
+                                                <div className="text-[10px] uppercase tracking-wider text-muted-foreground mb-1 font-semibold">
+                                                    {t('terminal.hiddenTheme.title')}
+                                                </div>
+                                                <div className="text-xs font-medium text-foreground">{hiddenSelectedTheme.name}</div>
+                                                <div className="text-[10px] text-muted-foreground mt-1">
+                                                    {t('terminal.hiddenTheme.desc')}
+                                                </div>
+                                            </div>
+                                        )}
                                         {/* Built-in themes */}
                                         {builtinThemes.map(theme => (
                                             <ThemeItem
@@ -551,12 +620,12 @@ export const ThemeCustomizeModal: React.FC<ThemeCustomizeModalProps> = ({
                                             />
                                         ))}
                                         {/* Custom themes section */}
-                                        {customThemes.length > 0 && (
+                                        {draftCustomThemes.length > 0 && (
                                             <>
                                                 <div className="text-[9px] uppercase tracking-wider text-muted-foreground mt-3 mb-1.5 px-1 font-semibold">
                                                     {t('terminal.customTheme.section')}
                                                 </div>
-                                                {customThemes.map(theme => (
+                                                {draftCustomThemes.map(theme => (
                                                     <ThemeItem
                                                         key={theme.id}
                                                         theme={theme}
@@ -617,12 +686,12 @@ export const ThemeCustomizeModal: React.FC<ThemeCustomizeModalProps> = ({
                                         />
 
                                         {/* Custom themes list */}
-                                        {customThemes.length > 0 && (
+                                        {draftCustomThemes.length > 0 && (
                                             <>
                                                 <div className="text-[9px] uppercase tracking-wider text-muted-foreground mt-3 mb-1 px-1 font-semibold">
                                                     {t('terminal.customTheme.yourThemes')}
                                                 </div>
-                                                {customThemes.map(theme => (
+                                                {draftCustomThemes.map(theme => (
                                                     <ThemeItem
                                                         key={theme.id}
                                                         theme={theme}
@@ -717,12 +786,16 @@ export const ThemeCustomizeModal: React.FC<ThemeCustomizeModalProps> = ({
                     theme={editingTheme}
                     isNew={isNewTheme}
                     onSave={(theme) => {
+                        setDraftCustomThemes((prev) => {
+                            if (isNewTheme) {
+                                return [...prev, cloneTheme(theme)];
+                            }
+                            return prev.map((entry) => entry.id === theme.id ? cloneTheme(theme) : entry);
+                        });
                         if (isNewTheme) {
-                            addTheme(theme);
                             setSelectedTheme(theme.id);
                             onThemeChange?.(theme.id);
                         } else {
-                            updateTheme(theme.id, theme);
                             if (selectedTheme === theme.id) {
                                 onThemeChange?.(theme.id);
                             }

components/terminal/ThemeSidePanel.tsx

@@ -6,11 +6,11 @@
  * Changes apply in real-time.
  */
 
-import React, { memo, useCallback, useMemo, useRef, useState } from 'react';
+import React, { memo, useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import { Check, Download, Minus, Palette, Pencil, Plus, Sparkles, Type } from 'lucide-react';
 import { useI18n } from '../../application/i18n/I18nProvider';
 import { useAvailableFonts } from '../../application/state/fontStore';
-import { TERMINAL_THEMES, TerminalThemeConfig } from '../../infrastructure/config/terminalThemes';
+import { TERMINAL_THEMES, TerminalThemeConfig, USER_VISIBLE_TERMINAL_THEMES, isUiMatchTerminalThemeId } from '../../infrastructure/config/terminalThemes';
 import { MIN_FONT_SIZE, MAX_FONT_SIZE, TerminalFont } from '../../infrastructure/config/fonts';
 import { useCustomThemes, useCustomThemeActions } from '../../application/state/customThemeStore';
 import { parseItermcolors } from '../../infrastructure/parsers/itermcolorsParser';
@@ -126,20 +126,25 @@ const FontItem = memo(({
 FontItem.displayName = 'FontItem';
 
 interface ThemeSidePanelProps {
+  followAppTerminalTheme?: boolean;
   currentThemeId: string;
   globalThemeId: string;
   currentFontFamilyId: string;
   globalFontFamilyId: string;
   currentFontSize: number;
+  currentFontWeight: number;
   canResetTheme?: boolean;
   canResetFontFamily?: boolean;
   canResetFontSize?: boolean;
+  canResetFontWeight?: boolean;
   onThemeChange: (themeId: string) => void;
   onThemeReset?: () => void;
   onFontFamilyChange: (fontFamilyId: string) => void;
   onFontFamilyReset?: () => void;
   onFontSizeChange: (fontSize: number) => void;
   onFontSizeReset?: () => void;
+  onFontWeightChange: (fontWeight: number) => void;
+  onFontWeightReset?: () => void;
   isVisible?: boolean;
   previewColors?: {
     background: string;
@@ -148,20 +153,25 @@ interface ThemeSidePanelProps {
 }
 
 const ThemeSidePanelInner: React.FC<ThemeSidePanelProps> = ({
+  followAppTerminalTheme = false,
   currentThemeId,
   globalThemeId,
   currentFontFamilyId,
   globalFontFamilyId,
   currentFontSize,
+  currentFontWeight,
   canResetTheme = false,
   canResetFontFamily = false,
   canResetFontSize = false,
+  canResetFontWeight = false,
   onThemeChange,
   onThemeReset,
   onFontFamilyChange,
   onFontFamilyReset,
   onFontSizeChange,
   onFontSizeReset,
+  onFontWeightChange,
+  onFontWeightReset,
   isVisible = true,
   previewColors,
 }) => {
@@ -170,7 +180,7 @@ const ThemeSidePanelInner: React.FC<ThemeSidePanelProps> = ({
   const customThemes = useCustomThemes();
   const { addTheme, updateTheme, deleteTheme } = useCustomThemeActions();
 
-  const [activeTab, setActiveTab] = useState<TabType>('theme');
+  const [activeTab, setActiveTab] = useState<TabType>(followAppTerminalTheme ? 'font' : 'theme');
   const [editingTheme, setEditingTheme] = useState<TerminalTheme | null>(null);
   const [isNewTheme, setIsNewTheme] = useState(false);
   const fileInputRef = useRef<HTMLInputElement>(null);
@@ -183,6 +193,12 @@ const ThemeSidePanelInner: React.FC<ThemeSidePanelProps> = ({
     () => allThemes.find((theme) => theme.id === globalThemeId) || TERMINAL_THEMES[0],
     [allThemes, globalThemeId],
   );
+  const hiddenSelectedTheme = useMemo(
+    () => (isUiMatchTerminalThemeId(currentThemeId)
+      ? TERMINAL_THEMES.find((theme) => theme.id === currentThemeId) || null
+      : null),
+    [currentThemeId],
+  );
   const globalFont = useMemo(
     () => availableFonts.find((font) => font.id === globalFontFamilyId) || availableFonts[0],
     [availableFonts, globalFontFamilyId],
@@ -256,9 +272,27 @@ const ThemeSidePanelInner: React.FC<ThemeSidePanelProps> = ({
     setIsNewTheme(false);
   }, [deleteTheme, currentThemeId, onThemeChange]);
 
+  const themeEditingLocked = followAppTerminalTheme;
+
+  useEffect(() => {
+    if (themeEditingLocked && activeTab !== 'font') {
+      setActiveTab('font');
+    }
+  }, [activeTab, themeEditingLocked]);
+
+  useEffect(() => {
+    if (!themeEditingLocked || !editingTheme) return;
+    setEditingTheme(null);
+    setIsNewTheme(false);
+  }, [editingTheme, themeEditingLocked]);
+
   if (!isVisible) return null;
 
-  const builtinThemes = TERMINAL_THEMES;
+  const builtinThemes = USER_VISIBLE_TERMINAL_THEMES;
+
+  const footerLabel = themeEditingLocked
+    ? `${availableFonts.find(f => f.id === currentFontFamilyId)?.name ?? currentFontFamilyId} • ${currentFontSize}px • ${currentFontWeight}`
+    : `${allThemes.find(t => t.id === currentThemeId)?.name ?? currentThemeId} • ${availableFonts.find(f => f.id === currentFontFamilyId)?.name ?? currentFontFamilyId} • ${currentFontSize}px • ${currentFontWeight}`;
   const panelVars = {
     ['--terminal-panel-bg' as never]: previewColors?.background ?? 'var(--background)',
     ['--terminal-panel-fg' as never]: previewColors?.foreground ?? 'var(--foreground)',
@@ -281,17 +315,19 @@ const ThemeSidePanelInner: React.FC<ThemeSidePanelProps> = ({
       >
         {/* Tab Bar */}
         <div className="flex p-1.5 gap-0.5 shrink-0 border-b" style={{ borderColor: 'var(--terminal-panel-border)' }}>
-          <button
-            onClick={() => { setActiveTab('theme'); setEditingTheme(null); }}
-            className="flex-1 flex items-center justify-center gap-1 px-1.5 py-1.5 rounded-md text-[11px] font-medium transition-all"
-            style={{
-              backgroundColor: activeTab === 'theme' ? 'var(--terminal-panel-active)' : 'transparent',
-              color: activeTab === 'theme' ? 'var(--terminal-panel-fg)' : 'var(--terminal-panel-muted)',
-            }}
-          >
-            <Palette size={12} />
-            {t('terminal.themeModal.tab.theme')}
-          </button>
+          {!themeEditingLocked && (
+            <button
+              onClick={() => { setActiveTab('theme'); setEditingTheme(null); }}
+              className="flex-1 flex items-center justify-center gap-1 px-1.5 py-1.5 rounded-md text-[11px] font-medium transition-all"
+              style={{
+                backgroundColor: activeTab === 'theme' ? 'var(--terminal-panel-active)' : 'transparent',
+                color: activeTab === 'theme' ? 'var(--terminal-panel-fg)' : 'var(--terminal-panel-muted)',
+              }}
+            >
+              <Palette size={12} />
+              {t('terminal.themeModal.tab.theme')}
+            </button>
+          )}
           <button
             onClick={() => setActiveTab('font')}
             className="flex-1 flex items-center justify-center gap-1 px-1.5 py-1.5 rounded-md text-[11px] font-medium transition-all"
@@ -303,24 +339,37 @@ const ThemeSidePanelInner: React.FC<ThemeSidePanelProps> = ({
             <Type size={12} />
             {t('terminal.themeModal.tab.font')}
           </button>
-          <button
-            onClick={() => setActiveTab('custom')}
-            className="flex-1 flex items-center justify-center gap-1 px-1.5 py-1.5 rounded-md text-[11px] font-medium transition-all"
-            style={{
-              backgroundColor: activeTab === 'custom' ? 'var(--terminal-panel-active)' : 'transparent',
-              color: activeTab === 'custom' ? 'var(--terminal-panel-fg)' : 'var(--terminal-panel-muted)',
-            }}
-          >
-            <Sparkles size={12} />
-            {t('terminal.themeModal.tab.custom')}
-          </button>
+          {!themeEditingLocked && (
+            <button
+              onClick={() => setActiveTab('custom')}
+              className="flex-1 flex items-center justify-center gap-1 px-1.5 py-1.5 rounded-md text-[11px] font-medium transition-all"
+              style={{
+                backgroundColor: activeTab === 'custom' ? 'var(--terminal-panel-active)' : 'transparent',
+                color: activeTab === 'custom' ? 'var(--terminal-panel-fg)' : 'var(--terminal-panel-muted)',
+              }}
+            >
+              <Sparkles size={12} />
+              {t('terminal.themeModal.tab.custom')}
+            </button>
+          )}
         </div>
 
         {/* List Content */}
         <ScrollArea className="flex-1 min-h-0">
           <div className="py-1">
-            {activeTab === 'theme' && (
+            {!themeEditingLocked && activeTab === 'theme' && (
               <div>
+                {hiddenSelectedTheme && (
+                  <div className="mx-2 mb-2 rounded-lg border px-3 py-2.5" style={{ borderColor: 'var(--terminal-panel-border)', backgroundColor: 'var(--terminal-panel-hover)' }}>
+                    <div className="text-[10px] uppercase tracking-wider mb-1 font-semibold" style={{ color: 'var(--terminal-panel-muted)' }}>
+                      {t('terminal.hiddenTheme.title')}
+                    </div>
+                    <div className="text-xs font-medium">{hiddenSelectedTheme.name}</div>
+                    <div className="text-[10px] mt-1" style={{ color: 'var(--terminal-panel-muted)' }}>
+                      {t('terminal.hiddenTheme.desc')}
+                    </div>
+                  </div>
+                )}
                 {builtinThemes.map(theme => (
                   <ThemeItem
                     key={theme.id}
@@ -383,7 +432,7 @@ const ThemeSidePanelInner: React.FC<ThemeSidePanelProps> = ({
                 )}
               </div>
             )}
-            {activeTab === 'custom' && !editingTheme && (
+            {!themeEditingLocked && activeTab === 'custom' && !editingTheme && (
               <div>
                 <button
                   onClick={handleNewTheme}
@@ -497,10 +546,69 @@ const ThemeSidePanelInner: React.FC<ThemeSidePanelProps> = ({
           </div>
         )}
 
+        {themeEditingLocked && canResetTheme && (
+          <div className="p-2.5 border-t shrink-0" style={{ borderColor: 'var(--terminal-panel-border)' }}>
+            <div className="flex items-center justify-between gap-2">
+              <div className="text-[9px] uppercase tracking-wider font-semibold" style={{ color: 'var(--terminal-panel-muted)' }}>
+                {t('terminal.themeModal.globalTheme')}
+              </div>
+              <button
+                onClick={onThemeReset}
+                className="text-[10px] font-medium hover:opacity-80 transition-opacity"
+                style={{ color: 'var(--terminal-panel-fg)' }}
+              >
+                {t('common.useGlobal')}
+              </button>
+            </div>
+          </div>
+        )}
+
+        {/* Font Weight Control (only in font tab) */}
+        {activeTab === 'font' && (
+          <div className="p-2.5 border-t shrink-0" style={{ borderColor: 'var(--terminal-panel-border)' }}>
+            <div className="flex items-center justify-between gap-2 mb-1.5">
+              <div className="text-[9px] uppercase tracking-wider font-semibold" style={{ color: 'var(--terminal-panel-muted)' }}>
+                {t('terminal.themeModal.fontWeight')}
+              </div>
+              {canResetFontWeight && (
+                <button
+                  onClick={onFontWeightReset}
+                  className="text-[10px] font-medium hover:opacity-80 transition-opacity"
+                  style={{ color: 'var(--terminal-panel-fg)' }}
+                >
+                  {t('common.useGlobal')}
+                </button>
+              )}
+            </div>
+            <div className="flex items-center gap-2 rounded-lg p-1.5" style={{ backgroundColor: 'var(--terminal-panel-hover)' }}>
+              <select
+                value={currentFontWeight}
+                onChange={(e) => onFontWeightChange(Number(e.target.value))}
+                className="flex-1 h-7 rounded-md border text-xs px-2 cursor-pointer"
+                style={{
+                  backgroundColor: 'var(--terminal-panel-bg)',
+                  color: 'var(--terminal-panel-fg)',
+                  borderColor: 'var(--terminal-panel-border)',
+                }}
+              >
+                <option value={100}>100 Thin</option>
+                <option value={200}>200 ExtraLight</option>
+                <option value={300}>300 Light</option>
+                <option value={400}>400 Normal</option>
+                <option value={500}>500 Medium</option>
+                <option value={600}>600 SemiBold</option>
+                <option value={700}>700 Bold</option>
+                <option value={800}>800 ExtraBold</option>
+                <option value={900}>900 Black</option>
+              </select>
+            </div>
+          </div>
+        )}
+
         {/* Current selection info */}
         <div className="px-2.5 py-1.5 border-t shrink-0" style={{ borderColor: 'var(--terminal-panel-border)' }}>
           <div className="text-[9px] truncate" style={{ color: 'var(--terminal-panel-muted)' }}>
-            {allThemes.find(t => t.id === currentThemeId)?.name ?? currentThemeId} • {availableFonts.find(f => f.id === currentFontFamilyId)?.name ?? currentFontFamilyId} • {currentFontSize}px
+            {footerLabel}
           </div>
         </div>
       </div>

components/terminal/ZmodemProgressIndicator.tsx

@@ -0,0 +1,79 @@
+import { ArrowDownToLine, ArrowUpFromLine, X } from 'lucide-react';
+import React from 'react';
+
+interface ZmodemProgressIndicatorProps {
+  transferType: 'upload' | 'download' | null;
+  filename: string | null;
+  transferred: number;
+  total: number;
+  fileIndex: number;
+  fileCount: number;
+  finalizing: boolean;
+  onCancel: () => void;
+}
+
+function formatBytes(bytes: number): string {
+  if (bytes <= 0) return '0 B';
+  const k = 1024;
+  const sizes = ['B', 'KB', 'MB', 'GB', 'TB'];
+  const i = Math.min(Math.floor(Math.log(bytes) / Math.log(k)), sizes.length - 1);
+  return `${(bytes / Math.pow(k, i)).toFixed(1)} ${sizes[i]}`;
+}
+
+export const ZmodemProgressIndicator: React.FC<ZmodemProgressIndicatorProps> = ({
+  transferType,
+  filename,
+  transferred,
+  total,
+  fileIndex,
+  fileCount,
+  finalizing,
+  onCancel,
+}) => {
+  const percent = total > 0 ? Math.min(100, Math.round((transferred / total) * 100)) : 0;
+  const Icon = transferType === 'upload' ? ArrowUpFromLine : ArrowDownToLine;
+  const label = finalizing ? 'Waiting for remote...' : transferType === 'upload' ? 'Uploading' : 'Downloading';
+  const fileInfo = fileCount > 0 ? ` (${fileIndex + 1}/${fileCount})` : '';
+
+  return (
+    <div
+      className="flex items-center gap-2.5 px-3 py-2 rounded-lg shadow-lg backdrop-blur-sm min-w-[240px] max-w-[360px]"
+      style={{
+        backgroundColor: 'color-mix(in srgb, var(--terminal-ui-bg, #000000) 90%, transparent)',
+        border: '1px solid color-mix(in srgb, var(--terminal-ui-fg, #ffffff) 15%, var(--terminal-ui-bg, #000000))',
+        color: 'var(--terminal-ui-fg, #ffffff)',
+      }}
+      onClick={(e) => e.stopPropagation()}
+      onMouseDown={(e) => e.stopPropagation()}
+    >
+      <Icon className="h-4 w-4 flex-shrink-0 opacity-60" />
+      <div className="flex-1 min-w-0">
+        <div className="flex items-center justify-between gap-2 mb-1">
+          <span className="text-xs font-medium truncate">
+            {filename || label}{fileInfo}
+          </span>
+          <span className="text-[10px] opacity-60 flex-shrink-0">{percent}%</span>
+        </div>
+        <div className="w-full h-1 rounded-full overflow-hidden" style={{ backgroundColor: 'color-mix(in srgb, var(--terminal-ui-fg, #ffffff) 10%, transparent)' }}>
+          <div
+            className="h-full rounded-full transition-all duration-150"
+            style={{
+              width: `${percent}%`,
+              backgroundColor: transferType === 'upload' ? '#3b82f6' : '#22c55e',
+            }}
+          />
+        </div>
+        <div className="text-[10px] opacity-50 mt-0.5">
+          {formatBytes(transferred)} / {formatBytes(total)}
+        </div>
+      </div>
+      <button
+        onClick={onCancel}
+        className="flex-shrink-0 p-1 rounded transition-colors hover:bg-white/10"
+        title="Cancel transfer (Ctrl+C)"
+      >
+        <X className="h-3.5 w-3.5 opacity-60" />
+      </button>
+    </div>
+  );
+};

components/terminal/autocomplete/AutocompletePopup.tsx

@@ -48,6 +48,8 @@ interface AutocompletePopupProps {
   onRequestReposition?: () => void;
   /** Offset from top of container to terminal content area (toolbar + search bar) */
   searchBarOffset?: number;
+  /** Called when user clicks outside the popup to dismiss it */
+  onDismiss?: () => void;
 }
 
 const SOURCE_LABELS: Record<SuggestionSource, { label: string; fullLabel: string; fallbackColor: string }> = {
@@ -105,7 +107,9 @@ const AutocompletePopup: React.FC<AutocompletePopupProps> = ({
   containerRef,
   onRequestReposition,
   searchBarOffset: _searchBarOffset = 30,
+  onDismiss,
 }) => {
+  const wrapperRef = useRef<HTMLDivElement>(null);
   const listRef = useRef<HTMLDivElement>(null);
   const selectedRef = useRef<HTMLDivElement>(null);
   const [hoveredIndex, setHoveredIndex] = useState(-1);
@@ -148,6 +152,18 @@ const AutocompletePopup: React.FC<AutocompletePopupProps> = ({
     };
   }, [containerRef, onRequestReposition, visible]);
 
+  // Dismiss popup when clicking outside
+  useEffect(() => {
+    if (!visible || !onDismiss) return;
+    const handlePointerDown = (e: PointerEvent) => {
+      if (wrapperRef.current && !wrapperRef.current.contains(e.target as Node)) {
+        onDismiss();
+      }
+    };
+    document.addEventListener("pointerdown", handlePointerDown);
+    return () => document.removeEventListener("pointerdown", handlePointerDown);
+  }, [visible, onDismiss]);
+
   if (!visible || suggestions.length === 0) return null;
 
   const bg = themeColors?.background ?? "#1e1e2e";
@@ -217,6 +233,7 @@ const AutocompletePopup: React.FC<AutocompletePopupProps> = ({
 
   return (
     <div
+      ref={wrapperRef}
       style={{
         position: "fixed",
         left: `${clampedLeft}px`,

components/terminal/autocomplete/useTerminalAutocomplete.ts

@@ -943,15 +943,15 @@ function resolveAutocompleteCwd(
   if (os === "windows") return fallbackCwd;
 
   const normalizedWord = currentWord.trim().replace(/^['"]/, "");
-  const isRelativePathWord = normalizedWord.length > 0 &&
-    !normalizedWord.startsWith("/") &&
-    !normalizedWord.startsWith("~/") &&
-    !normalizedWord.startsWith("-");
 
-  if (!isRelativePathWord) {
+  // Absolute or home-relative paths don't depend on cwd
+  if (normalizedWord.startsWith("/") || normalizedWord.startsWith("~/")) {
     return fallbackCwd;
   }
 
+  // For empty word (e.g. "cd ") and relative paths, try prompt-based cwd
+  // extraction which reflects the current visible prompt — more up-to-date
+  // than fallbackCwd when OSC 7 is not supported.
   const promptCwd = extractPosixCwdFromPrompt(promptText);
   return chooseAutocompleteCwd(promptCwd, fallbackCwd);
 }
@@ -963,15 +963,16 @@ function chooseAutocompleteCwd(
   if (!promptCwd) return fallbackCwd;
   if (!fallbackCwd) return promptCwd;
 
-  if (promptCwd.startsWith("/")) {
+  // Prompt cwd is extracted from the currently visible prompt, so it tracks
+  // directory changes even when OSC 7 is not supported. Prefer it over
+  // fallbackCwd (which may be stale from initial connection) whenever it
+  // looks like a usable path.
+  if (promptCwd.startsWith("/") || promptCwd === "~" || promptCwd.startsWith("~/")) {
     return promptCwd;
   }
 
-  if (promptCwd === "~" || promptCwd.startsWith("~/")) {
-    return fallbackCwd;
-  }
-
-  return promptCwd;
+  // Bare directory name (e.g. "xunlong") can't be used as a path — fallback
+  return fallbackCwd;
 }
 
 function extractPosixCwdFromPrompt(promptText: string): string | undefined {

components/terminal/clearTerminalViewport.ts

@@ -0,0 +1,85 @@
+import type { Terminal as XTerm } from "@xterm/xterm";
+
+type CsiParam = number | number[];
+type InternalTerminal = XTerm & {
+  _core?: {
+    scroll?: (eraseAttr: unknown, isWrapped?: boolean) => void;
+    _inputHandler?: {
+      _eraseAttrData?: () => unknown;
+    };
+  };
+};
+
+const getVisibleContentRowCount = (term: XTerm): number => {
+  const buffer = term.buffer.active;
+  if (buffer.type !== "normal") {
+    return 0;
+  }
+
+  const baseY = buffer.baseY;
+  for (let row = term.rows - 1; row >= 0; row--) {
+    const line = buffer.getLine(baseY + row);
+    if (!line) {
+      continue;
+    }
+    if (line.translateToString(true).length > 0) {
+      return row + 1;
+    }
+  }
+
+  return 0;
+};
+
+export const preserveTerminalViewportInScrollback = (term: XTerm): void => {
+  const rowsToPreserve = getVisibleContentRowCount(term);
+  if (rowsToPreserve <= 0) {
+    return;
+  }
+
+  const internal = term as InternalTerminal;
+  const scroll = internal._core?.scroll;
+  const eraseAttr = internal._core?._inputHandler?._eraseAttrData?.();
+
+  if (typeof scroll !== "function" || eraseAttr === undefined) {
+    return;
+  }
+
+  for (let row = 0; row < rowsToPreserve; row++) {
+    scroll.call(internal._core, eraseAttr, false);
+  }
+};
+
+export const clearTerminalViewport = (term: XTerm): void => {
+  const buffer = term.buffer.active;
+  if (buffer.type !== "normal") return;
+
+  const cursorY = buffer.cursorY;
+  const cursorX = buffer.cursorX;
+
+  if (cursorY === 0 && buffer.baseY === 0) return;
+
+  const internal = term as InternalTerminal;
+  const scroll = internal._core?.scroll;
+  const eraseAttr = internal._core?._inputHandler?._eraseAttrData?.();
+
+  if (typeof scroll !== "function" || eraseAttr === undefined) return;
+
+  // Push lines above cursor into scrollback so they are preserved.
+  // After cursorY scrolls the prompt line shifts to active-screen row 0.
+  for (let i = 0; i < cursorY; i++) {
+    scroll.call(internal._core, eraseAttr, false);
+  }
+
+  // Clear everything below the prompt and reposition the cursor on it.
+  // CSI coordinates are 1-indexed.
+  const col = cursorX + 1;
+  term.write(`\x1b[2;1H\x1b[J\x1b[1;${col}H`, () => {
+    term.scrollToBottom();
+  });
+};
+
+export const isEraseScrollbackSequence = (params: CsiParam[]): boolean =>
+  params.length > 0 && params[0] === 3;
+
+export const isEraseViewportSequence = (params: CsiParam[]): boolean =>
+  params.length > 0 && params[0] === 2;

components/terminal/hooks/useServerStats.ts

@@ -89,11 +89,23 @@ export function useServerStats({
   const hasFetchedRef = useRef(false);
   const connectedAtRef = useRef(0);
   const fetchGenerationRef = useRef(0);
+  // Auto-disable polling after a few consecutive failures. This covers
+  // hosts the banner classifier could not identify (e.g. Juniper JUNOS,
+  // Arista EOS, Cisco NX-OS — all of which advertise themselves as
+  // OpenSSH but do not support the POSIX stats shell command). Without
+  // this, the hook would keep retrying forever and generate an AAA
+  // session log every refresh interval.
+  const CONSECUTIVE_FAILURE_LIMIT = 3;
+  const consecutiveFailuresRef = useRef(0);
+  const givenUpRef = useRef(false);
 
   const fetchStats = useCallback(async () => {
     if (!enabled || !isSupportedOs || !isConnected || !isVisible || !sessionId) {
       return;
     }
+    if (givenUpRef.current) {
+      return;
+    }
 
     const bridge = netcattyBridge.get();
     if (!bridge?.getServerStats) {
@@ -104,6 +116,21 @@ export function useServerStats({
     setIsLoading(true);
     setError(null);
 
+    const markFailure = (message: string) => {
+      consecutiveFailuresRef.current += 1;
+      setError(message);
+      if (consecutiveFailuresRef.current >= CONSECUTIVE_FAILURE_LIMIT) {
+        // Stop polling this session. The caller's useEffect sees the
+        // givenUp flag via the next render cycle and we also clear the
+        // interval locally so no further ticks fire.
+        givenUpRef.current = true;
+        if (intervalRef.current) {
+          clearInterval(intervalRef.current);
+          intervalRef.current = null;
+        }
+      }
+    };
+
     try {
       const result = await bridge.getServerStats(sessionId);
 
@@ -112,6 +139,7 @@ export function useServerStats({
 
       if (result.success && result.stats) {
         hasFetchedRef.current = true;
+        consecutiveFailuresRef.current = 0;
         setStats({
           cpu: result.stats.cpu,
           cpuCores: result.stats.cpuCores,
@@ -134,11 +162,17 @@ export function useServerStats({
           lastUpdated: Date.now(),
         });
       } else if (result.error) {
-        setError(result.error);
+        markFailure(result.error);
+      } else {
+        // Response was not marked as success but has no error — treat as
+        // a soft failure. This happens e.g. when the stats shell pipeline
+        // returns a parse failure on a host that isn't a typical Linux
+        // distro (JUNOS, NX-OS, EOS).
+        markFailure('No stats returned');
       }
     } catch (err) {
       if (isMountedRef.current && generation === fetchGenerationRef.current) {
-        setError(err instanceof Error ? err.message : 'Unknown error');
+        markFailure(err instanceof Error ? err.message : 'Unknown error');
       }
     } finally {
       if (isMountedRef.current && generation === fetchGenerationRef.current) {
@@ -147,6 +181,15 @@ export function useServerStats({
     }
   }, [sessionId, enabled, isSupportedOs, isConnected, isVisible]);
 
+  // When the session changes (e.g., same tab reconnects to a different host
+  // while staying connected), reset the failure counter. Without this, a
+  // JUNOS session that tripped the counter would permanently suppress
+  // polling even after the tab reconnects to a Linux host.
+  useEffect(() => {
+    consecutiveFailuresRef.current = 0;
+    givenUpRef.current = false;
+  }, [sessionId]);
+
   // Initial fetch and periodic refresh
   useEffect(() => {
     isMountedRef.current = true;
@@ -158,9 +201,13 @@ export function useServerStats({
     }
 
     if (!enabled || !isSupportedOs || !isConnected) {
-      // Reset stats and fetch state when disabled or not connected
+      // Reset stats and fetch state when disabled or not connected.
+      // Also reset the give-up flag so that a reconnect (possibly to a
+      // different host at the same sessionId slot) gets a fresh chance.
       hasFetchedRef.current = false;
       connectedAtRef.current = 0;
+      consecutiveFailuresRef.current = 0;
+      givenUpRef.current = false;
 
       setStats({
         cpu: null,
@@ -222,15 +269,23 @@ export function useServerStats({
     // (e.g., tab was hidden while connected and is now becoming visible).
     const connectionAge = Date.now() - connectedAtRef.current;
     const needsWarmup = !hasFetchedRef.current && connectionAge < 2000;
-    const initialTimer = setTimeout(fetchStats, needsWarmup ? 2000 : 0);
+    // If we already gave up on this session (exceeded the consecutive
+    // failure limit), don't even schedule new timers on effect reruns
+    // such as visibility/tab-focus/settings changes. The cleanup at
+    // disconnect/sessionId change clears the flag for a fresh attempt.
+    const initialTimer = givenUpRef.current
+      ? null
+      : setTimeout(fetchStats, needsWarmup ? 2000 : 0);
 
     // Set up periodic refresh
     const intervalMs = Math.max(5, refreshInterval) * 1000; // Minimum 5 seconds
-    intervalRef.current = setInterval(fetchStats, intervalMs);
+    if (!givenUpRef.current) {
+      intervalRef.current = setInterval(fetchStats, intervalMs);
+    }
 
     return () => {
       isMountedRef.current = false;
-      clearTimeout(initialTimer);
+      if (initialTimer) clearTimeout(initialTimer);
       if (intervalRef.current) {
         clearInterval(intervalRef.current);
         intervalRef.current = null;

components/terminal/hooks/useTerminalContextActions.ts

@@ -3,6 +3,7 @@ import { useCallback } from "react";
 import type { RefObject } from "react";
 import { logger } from "../../../lib/logger";
 import { normalizeLineEndings, wrapBracketedPaste } from "../../../lib/utils";
+import { clearTerminalViewport } from "../clearTerminalViewport";
 
 type TerminalBackendWriteApi = {
   writeToSession: (sessionId: string, data: string) => void;
@@ -65,7 +66,7 @@ export const useTerminalContextActions = ({
   const onClear = useCallback(() => {
     const term = termRef.current;
     if (!term) return;
-    term.clear();
+    clearTerminalViewport(term);
   }, [termRef]);
 
   const onSelectWord = useCallback(() => {

components/terminal/hooks/useZmodemTransfer.ts

@@ -0,0 +1,102 @@
+import { useCallback, useEffect, useRef, useState } from 'react';
+import { netcattyBridge } from '../../../infrastructure/services/netcattyBridge';
+
+export interface ZmodemTransferState {
+  active: boolean;
+  transferType: 'upload' | 'download' | null;
+  filename: string | null;
+  transferred: number;
+  total: number;
+  fileIndex: number;
+  fileCount: number;
+  finalizing: boolean;
+  error: string | null;
+}
+
+const initialState: ZmodemTransferState = {
+  active: false,
+  transferType: null,
+  filename: null,
+  transferred: 0,
+  total: 0,
+  fileIndex: 0,
+  fileCount: 0,
+  finalizing: false,
+  error: null,
+};
+
+export function useZmodemTransfer(sessionId: string | null) {
+  const [state, setState] = useState<ZmodemTransferState>(initialState);
+  const disposeRef = useRef<(() => void) | null>(null);
+
+  const disposeExitRef = useRef<(() => void) | null>(null);
+
+  useEffect(() => {
+    if (!sessionId) return;
+
+    const bridge = netcattyBridge.get();
+    if (!bridge?.onZmodemEvent) return;
+
+    disposeRef.current = bridge.onZmodemEvent(sessionId, (event) => {
+      switch (event.type) {
+        case 'detect':
+          setState({
+            active: true,
+            transferType: event.transferType ?? null,
+            filename: null,
+            transferred: 0,
+            total: 0,
+            fileIndex: 0,
+            fileCount: 0,
+            error: null,
+          });
+          break;
+        case 'progress':
+          setState((prev) => ({
+            ...prev,
+            active: true,
+            transferType: event.transferType ?? prev.transferType,
+            filename: event.filename ?? prev.filename,
+            transferred: event.transferred ?? prev.transferred,
+            total: event.total ?? prev.total,
+            fileIndex: event.fileIndex ?? prev.fileIndex,
+            fileCount: event.fileCount ?? prev.fileCount,
+            finalizing: !!((event as Record<string, unknown>).finalizing),
+          }));
+          break;
+        case 'complete':
+          setState((prev) => ({ ...prev, active: false }));
+          break;
+        case 'error':
+          setState((prev) => ({
+            ...prev,
+            active: false,
+            error: event.error ?? 'Unknown error',
+          }));
+          break;
+      }
+    });
+
+    // If the session exits mid-transfer (disconnect, shell exit, etc.),
+    // reset state so the progress indicator doesn't stay stuck.
+    disposeExitRef.current = bridge.onSessionExit(sessionId, () => {
+      setState(initialState);
+    });
+
+    return () => {
+      disposeRef.current?.();
+      disposeRef.current = null;
+      disposeExitRef.current?.();
+      disposeExitRef.current = null;
+      setState(initialState);
+    };
+  }, [sessionId]);
+
+  const cancel = useCallback(() => {
+    if (!sessionId) return;
+    const bridge = netcattyBridge.get();
+    bridge?.cancelZmodem?.(sessionId);
+  }, [sessionId]);
+
+  return { ...state, cancel };
+}

components/terminal/runtime/createTerminalSessionStarters.ts

@@ -10,9 +10,23 @@ import {
   sanitizeCredentialValue,
 } from "../../../domain/credentials";
 import { resolveHostAuth } from "../../../domain/sshAuth";
+import { detectVendorFromSshVersion } from "../../../domain/host";
 
-/** Timeout of distro detection task */
-const DISTRO_DETECT_TIMEOUT = 8000; // ms
+/**
+ * Per-connection token for stale-timer detection. The renderer reuses the
+ * same sessionId across reconnects within a tab, so comparing sessionIds
+ * cannot distinguish "the current attempt" from "a previous attempt on
+ * the same slot". We assign each startSSH call a fresh token object and
+ * store it in this module-local map, keyed by sessionId. A timer that
+ * was scheduled under an older token will see a different value here and
+ * bail out. The map entry for a sessionId is overwritten on each new
+ * connect and stays around until the app exits — since there is only one
+ * entry per active session, the memory cost is negligible.
+ */
+const connectionTokensBySessionId = new Map<string, object>();
+
+const isConnectionTokenCurrent = (sessionId: string, token: object): boolean =>
+  connectionTokensBySessionId.get(sessionId) === token;
 
 type TerminalBackendApi = {
   backendAvailable: () => boolean;
@@ -38,6 +52,17 @@ type TerminalBackendApi = {
     stdout?: string;
     stderr?: string;
   }>;
+  getSessionRemoteInfo?: (sessionId: string) => Promise<{
+    success: boolean;
+    remoteSshVersion?: string;
+    error?: string;
+  }>;
+  getSessionDistroInfo?: (sessionId: string) => Promise<{
+    success: boolean;
+    stdout?: string;
+    stderr?: string;
+    error?: string;
+  }>;
   onSessionData: (sessionId: string, cb: (data: string) => void) => () => void;
   onSessionExit: (
     sessionId: string,
@@ -172,7 +197,7 @@ const attachSessionToTerminal = (
   term: XTerm,
   id: string,
   opts?: {
-    onExitMessage?: (evt: { exitCode?: number; signal?: number }) => string;
+    onExitMessage?: (evt: { exitCode?: number; signal?: number; error?: string; reason?: string }) => string;
     onConnected?: () => void;
     // For serial: convert lone LF to CRLF to avoid "staircase effect"
     convertLfToCrlf?: boolean;
@@ -209,6 +234,9 @@ const attachSessionToTerminal = (
 
   ctx.disposeExitRef.current = ctx.terminalBackend.onSessionExit(id, (evt) => {
     ctx.updateStatus("disconnected");
+    if (evt.error) {
+      ctx.setError(evt.error);
+    }
     term.writeln(opts?.onExitMessage?.(evt) ?? "\r\n[session closed]");
 
     if (ctx.onTerminalDataCapture && ctx.serializeAddonRef.current) {
@@ -220,32 +248,73 @@ const attachSessionToTerminal = (
       }
     }
 
+    // Clean up the connection token for this sessionId so stale timers
+    // that haven't fired yet will fail the isConnectionTokenCurrent check
+    // (previously they would see the old token still in the map and pass).
+    connectionTokensBySessionId.delete(ctx.sessionId);
+
     ctx.onSessionExit?.(ctx.sessionId, evt);
   });
 };
 
 const runDistroDetection = async (
   ctx: TerminalSessionStartersContext,
-  auth: { username: string; password?: string; key?: SSHKey; passphrase?: string },
+  sessionId: string,
+  connectionToken: object,
 ) => {
-  if (!ctx.terminalBackend.execAvailable()) return;
+  // Stale-session guard: the renderer reuses ctx.sessionId across
+  // reconnects in the same tab, so comparing sessionIds is not enough.
+  // We compare against a per-connection token instead; if a newer
+  // connect attempt has run, it will have replaced the token in the
+  // module-level map and this check will fail. Repeated after every
+  // await because the session can change during an async call.
+  const isStillCurrent = () => isConnectionTokenCurrent(sessionId, connectionToken);
+
+  if (!isStillCurrent()) return;
+
+  // Step 1: try to classify from the SSH server identification string
+  // captured at handshake time. This is free (no extra channel) and
+  // reliably identifies most network-device vendors (Cisco IOS, Huawei
+  // VRP, HPE Comware, MikroTik, Fortinet, etc.) so we can skip the
+  // POSIX-shell probe entirely for those hosts — which otherwise fails
+  // and, on devices like Cisco / Juniper with AAA logging, generates an
+  // extra session log entry per connect.
   try {
-    const res = await ctx.terminalBackend.execCommand({
-      hostname: ctx.host.hostname,
-      username: auth.username || "root",
-      port: ctx.host.port || 22,
-      password: auth.password,
-      privateKey: auth.key?.privateKey,
-      passphrase: auth.passphrase ?? auth.key?.passphrase,
-      command: "cat /etc/os-release 2>/dev/null || uname -a",
-      timeout: DISTRO_DETECT_TIMEOUT,
-    });
-    const data = `${res.stdout || ""}\n${res.stderr || ""}`;
-    const idMatch = data.match(/^ID="?([\w-]+)"?$/im);
-    const distro = idMatch
-      ? idMatch[1]
-      : (data.split(/\s+/)[0] || "").toLowerCase();
-    if (distro) ctx.onOsDetected?.(ctx.host.id, distro);
+    if (ctx.terminalBackend.getSessionRemoteInfo && sessionId) {
+      const info = await ctx.terminalBackend.getSessionRemoteInfo(sessionId);
+      if (!isStillCurrent()) return;
+      const vendor = detectVendorFromSshVersion(info?.remoteSshVersion);
+      if (vendor) {
+        ctx.onOsDetected?.(ctx.host.id, vendor);
+        return;
+      }
+    }
+  } catch (err) {
+    logger.warn("SSH banner vendor detection failed", err);
+  }
+
+  if (!isStillCurrent()) return;
+
+  // Step 2: unknown or generic OpenSSH/Dropbear — fall back to the
+  // /etc/os-release probe to pick a distro-specific icon. We deliberately
+  // use `getSessionDistroInfo` which runs the probe on the *existing*
+  // SSH connection's exec channel instead of spinning up a brand new
+  // SSH client the way `execCommand` would. That saves a full handshake
+  // round-trip on every connect, and on OpenSSH-fronted network devices
+  // that we couldn't identify from the banner (JUNOS, NX-OS, EOS) it
+  // avoids one extra AAA session log entry per connect.
+  try {
+    if (ctx.terminalBackend.getSessionDistroInfo && sessionId) {
+      const res = await ctx.terminalBackend.getSessionDistroInfo(sessionId);
+      if (!isStillCurrent()) return;
+      if (!res?.success) return;
+      const data = `${res.stdout || ""}\n${res.stderr || ""}`;
+      const idMatch = data.match(/^ID="?([\w-]+)"?$/im);
+      const distro = idMatch
+        ? idMatch[1]
+        : (data.split(/\s+/)[0] || "").toLowerCase();
+      if (distro) ctx.onOsDetected?.(ctx.host.id, distro);
+    }
   } catch (err) {
     logger.warn("OS probe failed", err);
   }
@@ -296,8 +365,6 @@ export const createTerminalSessionStarters = (ctx: TerminalSessionStartersContex
     const effectivePassphrase = sanitizeCredentialValue(resolvedAuth.passphrase);
     const hasEncryptedPrimaryPassword = isEncryptedCredentialPlaceholder(resolvedAuth.password);
     const hasEncryptedPrimaryKey = isEncryptedCredentialPlaceholder(key?.privateKey);
-    let usedKey: SSHKey | undefined;
-    let usedPassword: string | undefined;
 
     const isAuthError = (err: unknown): boolean => {
       if (!(err instanceof Error)) return false;
@@ -569,7 +636,6 @@ export const createTerminalSessionStarters = (ctx: TerminalSessionStartersContex
       if (hasKeyMaterial) {
         try {
           id = await startAttempt({ key });
-          usedKey = key;
         } catch (err) {
           if (isAuthError(err) && hasPassword) {
             ctx.setProgressLogs((prev) => [
@@ -577,14 +643,12 @@ export const createTerminalSessionStarters = (ctx: TerminalSessionStartersContex
               "Key auth failed. Trying password...",
             ]);
             id = await startAttempt({ password: effectivePassword });
-            usedPassword = effectivePassword;
           } else {
             throw err;
           }
         }
       } else {
         id = await startAttempt({ password: effectivePassword });
-        usedPassword = effectivePassword;
       }
 
       if (unsubscribeChainProgress) unsubscribeChainProgress();
@@ -611,17 +675,20 @@ export const createTerminalSessionStarters = (ctx: TerminalSessionStartersContex
         }, 600);
       }
 
-      // Run OS detection only after successful connection
-      setTimeout(
-        () =>
-          void runDistroDetection(ctx, {
-            username: effectiveUsername,
-            password: usedPassword,
-            key: usedKey,
-            passphrase: effectivePassphrase,
-          }),
-        600,
-      );
+      // Run OS detection only after successful connection. Mint a fresh
+      // token for this specific connection attempt and register it as
+      // the current one for this sessionId slot; any previous timer
+      // scheduled against an earlier token will see the replacement
+      // and bail out. The detection function re-checks the token after
+      // every async await so a reconnect mid-probe is also caught.
+      {
+        const connectionToken = {};
+        connectionTokensBySessionId.set(id, connectionToken);
+        setTimeout(() => {
+          if (!isConnectionTokenCurrent(id, connectionToken)) return;
+          void runDistroDetection(ctx, id, connectionToken);
+        }, 600);
+      }
     } catch (err) {
       const message = err instanceof Error ? err.message : String(err);
       const authError = isAuthError(err);
@@ -761,15 +828,21 @@ export const createTerminalSessionStarters = (ctx: TerminalSessionStartersContex
     }
 
     try {
-      // Get local shell configuration from terminal settings
-      const localShell = ctx.terminalSettings?.localShell;
+      // Per-session shell (from QuickSwitcher discovery or split/copy) takes priority.
+      // The global terminalSettings.localShell may contain a shell ID (e.g., "wsl-ubuntu")
+      // which was already resolved to command+args and stored on the session object by App.tsx.
+      // Only pass shell/shellArgs when we have concrete per-session values;
+      // otherwise omit them so the backend uses its own default shell detection.
+      const sessionShell = ctx.host.localShell;
+      const sessionShellArgs = ctx.host.localShellArgs;
       const localStartDir = ctx.terminalSettings?.localStartDir;
 
       const id = await ctx.terminalBackend.startLocalSession({
         sessionId: ctx.sessionId,
         cols: term.cols,
         rows: term.rows,
-        shell: localShell,
+        shell: sessionShell || undefined,
+        shellArgs: sessionShellArgs || undefined,
         cwd: localStartDir,
         env: {
           TERM: ctx.terminalSettings?.terminalEmulationType ?? "xterm-256color",

components/terminal/runtime/createXTermRuntime.ts

@@ -1,7 +1,7 @@
 import { FitAddon } from "@xterm/addon-fit";
 import { SearchAddon } from "@xterm/addon-search";
 import { SerializeAddon } from "@xterm/addon-serialize";
-import { Unicode11Addon } from "@xterm/addon-unicode11";
+import { UnicodeGraphemesAddon } from "@xterm/addon-unicode-graphemes";
 import { WebLinksAddon } from "@xterm/addon-web-links";
 import { WebglAddon } from "@xterm/addon-webgl";
 import { Terminal as XTerm } from "@xterm/xterm";
@@ -26,10 +26,17 @@ import {
 import {
   resolveHostTerminalFontFamilyId,
   resolveHostTerminalFontSize,
+  resolveHostTerminalFontWeight,
 } from "../../../domain/terminalAppearance";
 import { logger } from "../../../lib/logger";
 import { isMacPlatform, normalizeLineEndings, wrapBracketedPaste } from "../../../lib/utils";
 import { netcattyBridge } from "../../../infrastructure/services/netcattyBridge";
+import {
+  clearTerminalViewport,
+  isEraseViewportSequence,
+  isEraseScrollbackSequence,
+  preserveTerminalViewportInScrollback,
+} from "../clearTerminalViewport";
 import type {
   Host,
   KeyBinding,
@@ -128,6 +135,21 @@ const detectPlatform = (): XTermPlatform => {
   return "darwin";
 };
 
+/**
+ * Extract the primary font family from a CSS font-family string that may
+ * include fallback fonts.  `document.fonts.check` returns `false` when *any*
+ * listed font is still loading, so passing the entire CJK fallback stack
+ * causes false negatives during early terminal creation – which in turn makes
+ * `fontWeightBold` fall back to the normal weight and renders bold text too
+ * thin.
+ */
+export const primaryFontFamily = (fontFamily: string): string => {
+  // Split on commas that are NOT inside quotes to handle font names like "Foo, Bar"
+  const match = fontFamily.match(/^(?:"[^"]*"|'[^']*'|[^,])+/);
+  const first = match?.[0]?.trim();
+  return first || fontFamily;
+};
+
 export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime => {
   const platform = detectPlatform();
   const deviceMemoryGb =
@@ -162,7 +184,7 @@ export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime
   const cursorBlink = settings?.cursorBlink ?? true;
   const scrollback = settings?.scrollback ?? 10000;
   const drawBoldTextInBrightColors = settings?.drawBoldInBrightColors ?? true;
-  const fontWeight = settings?.fontWeight ?? 400;
+  const fontWeight = resolveHostTerminalFontWeight(ctx.host, settings?.fontWeight ?? 400);
   const fontWeightBold = settings?.fontWeightBold ?? 700;
   const lineHeight = 1 + (settings?.linePadding ?? 0) / 10;
   const minimumContrastRatio = settings?.minimumContrastRatio ?? 1;
@@ -179,7 +201,7 @@ export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime
     if (typeof document === "undefined" || !document.fonts?.check) {
       return fontWeightBold;
     }
-    const weightSpec = `${fontWeightBold} ${effectiveFontSize}px ${fontFamily}`;
+    const weightSpec = `${fontWeightBold} ${effectiveFontSize}px ${primaryFontFamily(fontFamily)}`;
     return document.fonts.check(weightSpec) ? fontWeightBold : fontWeight;
   })();
 
@@ -188,6 +210,8 @@ export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime
     ...(windowsPty ? { windowsPty } : {}),
     // Override ignoreBracketedPasteMode if user explicitly disables bracketed paste
     ignoreBracketedPasteMode: settings?.disableBracketedPaste ?? performanceConfig.options.ignoreBracketedPasteMode,
+    // Rescale glyphs that would visually overlap into the next cell (CJK compliance)
+    rescaleOverlappingGlyphs: true,
     fontSize: effectiveFontSize,
     fontFamily,
     fontWeight: fontWeight as
@@ -230,6 +254,10 @@ export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime
     theme: {
       ...ctx.terminalTheme.colors,
       selectionBackground: ctx.terminalTheme.colors.selection,
+      // Scrollbar theming (xterm 6.0) — derive from foreground color
+      scrollbarSliderBackground: ctx.terminalTheme.colors.foreground + '33', // 20% opacity
+      scrollbarSliderHoverBackground: ctx.terminalTheme.colors.foreground + '66', // 40% opacity
+      scrollbarSliderActiveBackground: ctx.terminalTheme.colors.foreground + '80', // 50% opacity
     },
   });
 
@@ -307,19 +335,19 @@ export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime
       webglLoaded = true;
     } catch (webglErr) {
       logger.warn(
-        "[XTerm] WebGL addon failed, using canvas renderer. Error:",
+        "[XTerm] WebGL addon failed, using DOM renderer. Error:",
         webglErr instanceof Error ? webglErr.message : webglErr,
       );
     }
   } else {
     logger.info(
-      "[XTerm] Skipping WebGL addon (canvas preferred for macOS profile or low-memory devices)",
+      "[XTerm] Skipping WebGL addon (DOM preferred for low-memory devices)",
     );
   }
 
   scopedWindow.__xtermWebGLLoaded = webglLoaded;
-  scopedWindow.__xtermRendererPreference = performanceConfig.preferCanvasRenderer
-    ? "canvas"
+  scopedWindow.__xtermRendererPreference = performanceConfig.preferDOMRenderer
+    ? "dom"
     : "webgl";
 
   const webLinksAddon = new WebLinksAddon((event, uri) => {
@@ -354,9 +382,10 @@ export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime
   });
   term.loadAddon(webLinksAddon);
 
-  // Enable Unicode 11 for better Nerd Fonts / Powerline / CJK character width handling
-  term.loadAddon(new Unicode11Addon());
-  term.unicode.activeVersion = '11';
+  // Enable Unicode graphemes for accurate CJK / emoji / Nerd Font character width handling
+  const unicodeGraphemes = new UnicodeGraphemesAddon();
+  term.loadAddon(unicodeGraphemes);
+  term.unicode.activeVersion = '15-graphemes';
 
   logRenderer();
 
@@ -475,7 +504,7 @@ export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime
           break;
         }
         case "clearBuffer": {
-          term.clear();
+          clearTerminalViewport(term);
           break;
         }
         case "searchTerminal": {
@@ -562,7 +591,12 @@ export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime
         }
       } else {
         // Character mode (default): send immediately
-        ctx.terminalBackend.writeToSession(id, data);
+        // When backspaceBehavior is configured, remap the Backspace key output
+        let outData = data;
+        if (data === "\x7f" && ctx.host.backspaceBehavior === "ctrl-h") {
+          outData = "\x08";
+        }
+        ctx.terminalBackend.writeToSession(id, outData);
 
         // Local echo for serial connections only when explicitly enabled
         if (ctx.host.protocol === "serial" && ctx.serialLocalEcho) {
@@ -579,7 +613,9 @@ export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime
       }
 
       if (ctx.isBroadcastEnabledRef.current && ctx.onBroadcastInputRef.current) {
-        ctx.onBroadcastInputRef.current(data, ctx.sessionId);
+        // Use remapped data so broadcast peers also receive the correct byte
+        const broadcastData = (data === "\x7f" && ctx.host.backspaceBehavior === "ctrl-h") ? "\x08" : data;
+        ctx.onBroadcastInputRef.current(broadcastData, ctx.sessionId);
       }
 
       scrollToBottomAfterInput(data);
@@ -611,6 +647,17 @@ export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime
   // OSC 7 format: \x1b]7;file://hostname/path\x07 or \x1b]7;file://hostname/path\x1b\\
   let currentCwd: string | undefined = undefined;
 
+  const eraseScrollbackDisposable = term.parser.registerCsiHandler({ final: "J" }, (params) => {
+    if (isEraseViewportSequence(params)) {
+      preserveTerminalViewportInScrollback(term);
+      return false;
+    }
+    if (!isEraseScrollbackSequence(params)) {
+      return false;
+    }
+    return true;
+  });
+
   // Register OSC 7 handler using xterm.js parser
   // OSC 7 is the standard way for shells to report the current working directory
   const osc7Disposable = term.parser.registerOscHandler(7, (data) => {
@@ -733,6 +780,7 @@ export const createXTermRuntime = (ctx: CreateXTermRuntimeContext): XTermRuntime
     dispose: () => {
       cleanupMiddleClick?.();
       keywordHighlighter.dispose();
+      eraseScrollbackDisposable.dispose();
       osc7Disposable.dispose();
       osc52Disposable.dispose();
       try {

components/ui/aside-panel.tsx

@@ -1,5 +1,5 @@
 import { ArrowLeft, MoreVertical, X } from 'lucide-react';
-import React, { createContext, ReactNode, useCallback, useContext, useState } from 'react';
+import React, { createContext, ReactNode, useCallback, useContext, useMemo, useState } from 'react';
 import { cn } from '../../lib/utils';
 import { Popover, PopoverContent, PopoverTrigger } from './popover';
 import { ScrollArea } from './scroll-area';
@@ -44,6 +44,12 @@ interface AsidePanelProps {
     children: ReactNode;
     className?: string;
     width?: string;
+    layout?: AsidePanelLayout;
+    /**
+     * Optional stable identifier emitted as `data-section` on the panel
+     * root. Used as a targeting hook for Custom CSS (Settings → Appearance).
+     */
+    dataSection?: string;
 }
 
 interface AsidePanelHeaderProps {
@@ -101,8 +107,8 @@ export const AsidePanelContent: React.FC<{ children: ReactNode; className?: stri
     className,
 }) => {
     return (
-        <ScrollArea className={cn("flex-1 min-w-0", className)}>
-            <div className="p-4 space-y-4 min-w-0 overflow-x-hidden">
+        <ScrollArea className={cn("flex-1 min-w-0 [&>[data-radix-scroll-area-viewport]>div]:!block [&>[data-radix-scroll-area-viewport]>div]:!min-w-0", className)}>
+            <div className="p-4 space-y-4 min-w-0 overflow-hidden">
                 {children}
             </div>
         </ScrollArea>
@@ -171,14 +177,40 @@ interface AsidePanelStackProps {
     initialItem: AsideContentItem;
     className?: string;
     width?: string;
+    layout?: AsidePanelLayout;
+    /**
+     * Optional stable identifier emitted as `data-section` on the panel
+     * root. Used as a targeting hook for Custom CSS.
+     */
+    dataSection?: string;
 }
 
+export type AsidePanelLayout = 'overlay' | 'inline';
+
+const resolveInlineWidth = (width: string) => {
+    const arbitraryWidthMatch = width.match(/w-\[(.+)\]/);
+    if (arbitraryWidthMatch) {
+        return arbitraryWidthMatch[1];
+    }
+
+    switch (width) {
+        case 'w-full':
+            return '100%';
+        case 'w-screen':
+            return '100vw';
+        default:
+            return '380px';
+    }
+};
+
 export const AsidePanelStack: React.FC<AsidePanelStackProps> = ({
     open,
     onClose,
     initialItem,
     className,
     width = 'w-[380px]',
+    layout = 'overlay',
+    dataSection,
 }) => {
     const [stack, setStack] = useState<AsideContentItem[]>([initialItem]);
 
@@ -205,6 +237,13 @@ export const AsidePanelStack: React.FC<AsidePanelStackProps> = ({
 
     const currentItem = stack[stack.length - 1];
     const canGoBack = stack.length > 1;
+    const inlineWidth = useMemo(() => resolveInlineWidth(width), [width]);
+    const inlineStyle = layout === 'inline'
+        ? ({
+            width: inlineWidth,
+            ['--aside-inline-width' as string]: inlineWidth,
+        } as React.CSSProperties)
+        : undefined;
 
     // Reset stack when panel closes/opens
     React.useEffect(() => {
@@ -218,10 +257,14 @@ export const AsidePanelStack: React.FC<AsidePanelStackProps> = ({
     return (
         <AsidePanelContext.Provider value={{ push, pop, replace, clear, canGoBack, currentItem }}>
             <div className={cn(
-                "absolute right-0 top-0 bottom-0 max-w-full border-l border-border/60 bg-background z-30 flex flex-col app-no-drag overflow-hidden",
-                width,
+                layout === 'inline'
+                    ? "relative split-panel-enter shrink-0 h-full min-h-0 max-w-full border-l border-border/60 bg-background z-30 flex flex-col app-no-drag overflow-hidden shadow-[-16px_0_32px_hsl(var(--foreground)/0.08)]"
+                    : "absolute right-0 top-0 bottom-0 max-w-full border-l border-border/60 bg-background z-30 flex flex-col app-no-drag overflow-hidden",
+                layout === 'overlay' && width,
                 className
-            )}>
+            )}
+            style={inlineStyle}
+            data-section={dataSection}>
                 <AsidePanelHeader
                     title={currentItem.title}
                     subtitle={currentItem.subtitle}
@@ -248,15 +291,29 @@ export const AsidePanel: React.FC<AsidePanelProps> = ({
     children,
     className,
     width = 'w-[380px]',
+    layout = 'overlay',
+    dataSection,
 }) => {
     if (!open) return null;
 
+    const inlineWidth = resolveInlineWidth(width);
+    const inlineStyle = layout === 'inline'
+        ? ({
+            width: inlineWidth,
+            ['--aside-inline-width' as string]: inlineWidth,
+        } as React.CSSProperties)
+        : undefined;
+
     return (
         <div className={cn(
-            "absolute right-0 top-0 bottom-0 max-w-full border-l border-border/60 bg-background z-30 flex flex-col app-no-drag overflow-hidden",
-            width,
+            layout === 'inline'
+                ? "relative split-panel-enter shrink-0 h-full min-h-0 max-w-full border-l border-border/60 bg-background z-30 flex flex-col app-no-drag overflow-hidden shadow-[-16px_0_32px_hsl(var(--foreground)/0.08)]"
+                : "absolute right-0 top-0 bottom-0 max-w-full border-l border-border/60 bg-background z-30 flex flex-col app-no-drag overflow-hidden",
+            layout === 'overlay' && width,
             className
-        )}>
+        )}
+        style={inlineStyle}
+        data-section={dataSection}>
             {title && (
                 <AsidePanelHeader
                     title={title}

components/ui/dialog.tsx

@@ -48,8 +48,19 @@ const DialogContent = React.forwardRef<
         {...props}
       >
         {children}
+        <DialogPrimitive.Close
+          data-dialog-close="true"
+          tabIndex={-1}
+          aria-hidden="true"
+          className="sr-only"
+        >
+          {t("common.close")}
+        </DialogPrimitive.Close>
         {!hideCloseButton && (
-          <DialogPrimitive.Close className="absolute right-4 top-4 rounded-md p-1 transition-all hover:bg-muted hover:text-foreground focus:outline-none focus:ring-2 focus:ring-ring disabled:pointer-events-none text-muted-foreground">
+          <DialogPrimitive.Close
+            data-dialog-close="true"
+            className="absolute right-4 top-4 rounded-md p-1 transition-all hover:bg-muted hover:text-foreground focus:outline-none focus:ring-2 focus:ring-ring disabled:pointer-events-none text-muted-foreground"
+          >
             <X className="h-4 w-4" />
             <span className="sr-only">{t("common.close")}</span>
           </DialogPrimitive.Close>

domain/credentials.ts

@@ -88,5 +88,17 @@ export const findSyncPayloadEncryptedCredentialPaths = (
     }
   });
 
+  payload.groupConfigs?.forEach((config, index) => {
+    if (isEncryptedCredentialPlaceholder(config.password)) {
+      issues.push(`groupConfigs[${index}].password`);
+    }
+    if (isEncryptedCredentialPlaceholder(config.telnetPassword)) {
+      issues.push(`groupConfigs[${index}].telnetPassword`);
+    }
+    if (isEncryptedCredentialPlaceholder(config.proxyConfig?.password)) {
+      issues.push(`groupConfigs[${index}].proxyConfig.password`);
+    }
+  });
+
   return issues;
 };

domain/groupConfig.ts

@@ -0,0 +1,80 @@
+import type { GroupConfig, Host } from './models';
+
+/**
+ * Resolve merged group defaults by walking the ancestor chain.
+ * For group "A/B/C", merges configs from A, A/B, A/B/C (child overrides parent).
+ */
+export function resolveGroupDefaults(
+  groupPath: string,
+  groupConfigs: GroupConfig[],
+): Partial<GroupConfig> {
+  const configMap = new Map(groupConfigs.map((c) => [c.path, c]));
+  const parts = groupPath.split('/').filter(Boolean);
+  const merged: Record<string, unknown> = {};
+
+  for (let i = 0; i < parts.length; i++) {
+    const ancestorPath = parts.slice(0, i + 1).join('/');
+    const config = configMap.get(ancestorPath);
+    if (config) {
+      for (const [key, value] of Object.entries(config)) {
+        if (
+          (key === 'theme' && config.themeOverride === false) ||
+          (key === 'fontFamily' && config.fontFamilyOverride === false) ||
+          (key === 'fontSize' && config.fontSizeOverride === false) ||
+          (key === 'fontWeight' && config.fontWeightOverride === false)
+        ) {
+          continue;
+        }
+        if (key !== 'path' && value !== undefined) {
+          merged[key] = value;
+        }
+      }
+      if (config.themeOverride === false) {
+        delete merged.themeOverride;
+      }
+      if (config.fontFamilyOverride === false) {
+        delete merged.fontFamilyOverride;
+      }
+      if (config.fontSizeOverride === false) {
+        delete merged.fontSizeOverride;
+      }
+      if (config.fontWeightOverride === false) {
+        delete merged.fontWeightOverride;
+      }
+    }
+  }
+  return merged as Partial<GroupConfig>;
+}
+
+const INHERITABLE_KEYS: (keyof GroupConfig)[] = [
+  'username', 'password', 'savePassword', 'authMethod', 'identityId', 'identityFileId', 'identityFilePaths',
+  'port', 'protocol', 'agentForwarding', 'proxyConfig', 'hostChain', 'startupCommand',
+  'legacyAlgorithms', 'environmentVariables', 'charset', 'moshEnabled', 'moshServerPath',
+  'telnetEnabled', 'telnetPort', 'telnetUsername', 'telnetPassword',
+  'theme', 'themeOverride', 'fontFamily', 'fontFamilyOverride', 'fontSize', 'fontSizeOverride', 'fontWeight', 'fontWeightOverride',
+  'backspaceBehavior',
+];
+
+/**
+ * Apply group defaults to a host. Only fills in fields the host doesn't already have.
+ * Returns a new host object — does NOT mutate the original.
+ */
+export function applyGroupDefaults(host: Host, groupDefaults: Partial<GroupConfig>): Host {
+  const effective = { ...host };
+  for (const key of INHERITABLE_KEYS) {
+    const hostValue = (host as unknown as Record<string, unknown>)[key];
+    const groupValue = (groupDefaults as unknown as Record<string, unknown>)[key];
+    if ((hostValue === undefined || hostValue === '' || hostValue === null) && groupValue !== undefined) {
+      (effective as unknown as Record<string, unknown>)[key] = groupValue;
+    }
+  }
+  return effective;
+}
+
+export function resolveGroupTerminalThemeId(
+  groupDefaults: Partial<GroupConfig> | undefined,
+  fallbackThemeId: string,
+): string {
+  if (!groupDefaults) return fallbackThemeId;
+  return groupDefaults.theme || fallbackThemeId;
+}

domain/host.ts

@@ -17,6 +17,26 @@ export const LINUX_DISTRO_OPTIONS = [
   'kali',
 ] as const;
 
+/**
+ * Known network-device vendor IDs that Netcatty can detect from the SSH
+ * server identification string. When a host is classified as one of these,
+ * features that assume a POSIX shell (e.g. the periodic server stats poll)
+ * are disabled, because the stats command would either be rejected outright
+ * or generate one AAA session log per poll on the remote device.
+ */
+export const NETWORK_DEVICE_OPTIONS = [
+  'cisco',
+  'juniper',
+  'huawei',
+  'hpe',
+  'mikrotik',
+  'fortinet',
+  'paloalto',
+  'zyxel',
+] as const;
+
+export type NetworkDeviceVendor = typeof NETWORK_DEVICE_OPTIONS[number];
+
 export const normalizeDistroId = (value?: string) => {
   const v = (value || '').toLowerCase().trim();
   if (!v) return '';
@@ -33,10 +53,87 @@ export const normalizeDistroId = (value?: string) => {
   if (v.includes('almalinux')) return 'almalinux';
   if (v.includes('oracle')) return 'oracle';
   if (v.includes('kali')) return 'kali';
+  // Network device vendor IDs may arrive here after detection — preserve them.
+  if ((NETWORK_DEVICE_OPTIONS as readonly string[]).includes(v)) return v;
   if (v === 'linux' || v.includes('linux')) return 'linux';
   return '';
 };
 
+/**
+ * Parse the SSH server identification string (the `software` portion of
+ * `SSH-<protocol>-<software>\r\n`, exposed by ssh2 as `conn._remoteVer`)
+ * and return a normalized network-device vendor ID, or '' if the ident
+ * does not match a known vendor.
+ *
+ * Matching patterns are sourced from the Nmap nmap-service-probes
+ * database (match lines beginning with `match ssh m|^SSH-`), cross-
+ * referenced with the ssh-audit project's software.py and vendor docs.
+ * Only rules whose pattern can be reproduced from those sources are
+ * included here.
+ *
+ * Empty string means "use the fallback linux/macos detection path" —
+ * that is what happens for OpenSSH, Dropbear, JUNOS, Cisco NX-OS, and
+ * Arista EOS, all of which either are POSIX systems or present as
+ * plain `OpenSSH_*` with no distinct vendor marker.
+ */
+export const detectVendorFromSshVersion = (softwareVersion?: string): '' | NetworkDeviceVendor => {
+  const s = (softwareVersion || '').trim();
+  if (!s) return '';
+
+  // Cisco family — IOS, IOS XA, Wireless LAN Controller
+  if (/^Cisco[-_]/i.test(s)) return 'cisco';
+  if (/^CiscoIOS_/i.test(s)) return 'cisco';
+  if (/^CISCO_WLC\b/.test(s)) return 'cisco';
+  // Note: `IPSSH-*` is used by both Cisco and 3Com devices (per Nmap
+  // `match ssh m|^SSH-([\d.]+)-IPSSH-([\d.]+)\|`), so we cannot map it
+  // to a specific vendor icon from the banner alone. Users who want a
+  // custom icon for such devices can set one via the Host Details
+  // manual distro override. The stats-polling gate is still handled
+  // correctly via `host.deviceType === 'network'`.
+
+  // Juniper NetScreen firewall (JUNOS itself uses OpenSSH and is caught
+  // by the fallback failure-counter path in useServerStats).
+  if (/^NetScreen\b/.test(s)) return 'juniper';
+
+  // Huawei VRP and related products
+  if (/^HUAWEI[-_]/i.test(s)) return 'huawei';
+  if (/^VRP-/i.test(s)) return 'huawei';
+
+  // HPE / H3C — Comware switches, Integrated Lights-Out (iLO), legacy 3Com
+  if (/^Comware-/i.test(s)) return 'hpe';
+  if (/^3Com\s*OS/i.test(s)) return 'hpe';
+  if (/^mpSSH_/i.test(s)) return 'hpe';
+
+  // MikroTik RouterOS
+  if (/^ROSSSH\b/.test(s)) return 'mikrotik';
+
+  // Fortinet FortiOS / FortiGate
+  if (/^FortiSSH_/i.test(s)) return 'fortinet';
+
+  // Palo Alto Networks PAN-OS
+  if (/^PaloAltoNetworks[_-]/i.test(s)) return 'paloalto';
+
+  // ZyXEL ZyWALL
+  if (/^Zyxel\s*SSH/i.test(s)) return 'zyxel';
+
+  return '';
+};
+
+/**
+ * Classify a distro/vendor ID into a high-level device class. Features that
+ * assume a POSIX shell (periodic stats polling, /etc/os-release probing, etc.)
+ * should only run when this returns `linux-like`.
+ */
+export type DeviceClass = 'linux-like' | 'network-device' | 'other';
+
+export const classifyDistroId = (distroId?: string): DeviceClass => {
+  const v = (distroId || '').toLowerCase().trim();
+  if (!v) return 'other';
+  if ((NETWORK_DEVICE_OPTIONS as readonly string[]).includes(v)) return 'network-device';
+  if ((LINUX_DISTRO_OPTIONS as readonly string[]).includes(v)) return 'linux-like';
+  return 'other';
+};
+
 export const getEffectiveHostDistro = (
   host?: Pick<Host, 'distro' | 'manualDistro' | 'distroMode'> | null,
 ) => {

domain/models.ts

@@ -62,7 +62,7 @@ export interface Host {
   id: string;
   label: string;
   hostname: string;
-  port: number;
+  port?: number;
   username: string;
   // Optional reference to a reusable identity (username + auth) stored in Keychain.
   identityId?: string;
@@ -95,6 +95,8 @@ export interface Host {
   fontFamilyOverride?: boolean; // Explicitly override the global terminal font family for this host
   fontSize?: number; // Terminal font size for this host (pt)
   fontSizeOverride?: boolean; // Explicitly override the global terminal font size for this host
+  fontWeight?: number; // Terminal font weight for this host (100-900)
+  fontWeightOverride?: boolean; // Explicitly override the global terminal font weight for this host
   distro?: string; // detected distro id (e.g., ubuntu, debian)
   distroMode?: 'auto' | 'manual'; // whether distro icon comes from detection or manual override
   manualDistro?: string; // manually selected distro id when distroMode='manual'
@@ -117,9 +119,20 @@ export interface Host {
   keywordHighlightEnabled?: boolean;
   // Legacy SSH algorithm support for older network equipment (switches, routers)
   legacyAlgorithms?: boolean;
+  // What the Backspace key sends: undefined = xterm default (no interception), 'ctrl-h' = ^H (0x08)
+  backspaceBehavior?: 'ctrl-h';
   // Local SSH key file paths (from SSH config IdentityFile or user-added)
   // Resolved at connection time — the app reads the file content when connecting.
   identityFilePaths?: string[];
+  // Pin host to top of All hosts view for quick access
+  pinned?: boolean;
+  // Timestamp of last successful connection, used for Recently Connected section
+  lastConnectedAt?: number;
+  // Per-session shell override for local terminals (from shell discovery)
+  localShell?: string;
+  localShellArgs?: string[];
+  localShellName?: string;
+  localShellIcon?: string;
 }
 
 export type KeyType = 'RSA' | 'ECDSA' | 'ED25519';
@@ -178,6 +191,42 @@ export interface GroupNode {
   totalHostCount?: number;
 }
 
+/** Default configuration for a group. Hosts in this group inherit these values when not explicitly set. */
+export interface GroupConfig {
+  path: string;
+  username?: string;
+  password?: string;
+  savePassword?: boolean;
+  authMethod?: 'password' | 'key' | 'certificate';
+  identityId?: string;
+  identityFileId?: string;
+  identityFilePaths?: string[];
+  port?: number;
+  protocol?: 'ssh' | 'telnet';
+  agentForwarding?: boolean;
+  proxyConfig?: ProxyConfig;
+  hostChain?: HostChainConfig;
+  startupCommand?: string;
+  legacyAlgorithms?: boolean;
+  environmentVariables?: EnvVar[];
+  charset?: string;
+  moshEnabled?: boolean;
+  moshServerPath?: string;
+  telnetEnabled?: boolean;
+  telnetPort?: number;
+  telnetUsername?: string;
+  telnetPassword?: string;
+  theme?: string;
+  themeOverride?: boolean;
+  fontFamily?: string;
+  fontFamilyOverride?: boolean;
+  fontSize?: number;
+  fontSizeOverride?: boolean;
+  fontWeight?: number;
+  fontWeightOverride?: boolean;
+  backspaceBehavior?: 'ctrl-h';
+}
+
 export interface SyncConfig {
   gistId: string;
   githubToken: string;
@@ -451,7 +500,7 @@ export interface TerminalSettings {
   osc52Clipboard: 'off' | 'write-only' | 'read-write' | 'prompt'; // OSC-52 clipboard access: off, write-only (default), read-write, or prompt on read
 
   // Rendering
-  rendererType: 'auto' | 'webgl' | 'canvas'; // Terminal renderer: auto (detect based on hardware), webgl, or canvas
+  rendererType: 'auto' | 'webgl' | 'dom'; // Terminal renderer: auto (detect based on hardware), webgl, or dom
 
   // Autocomplete
   autocompleteEnabled: boolean; // Enable terminal command autocomplete
@@ -527,8 +576,14 @@ export const normalizeTerminalSettings = (
     ...(settings ?? {}),
   };
 
+  // Migrate legacy 'canvas' renderer to 'dom' (canvas removed in xterm.js 6.0)
+  const rendererType = (mergedSettings.rendererType as string) === 'canvas'
+    ? 'dom' as const
+    : mergedSettings.rendererType;
+
   return {
     ...mergedSettings,
+    rendererType,
     autocompleteGhostText: mergedSettings.autocompletePopupMenu
       ? false
       : mergedSettings.autocompleteGhostText,
@@ -626,6 +681,10 @@ export interface TerminalSession {
   charset?: string; // Connection-time charset override (e.g. for quick-connect serial)
   // Serial-specific connection settings
   serialConfig?: SerialConfig;
+  localShell?: string;       // Shell command for local terminals (from discovery)
+  localShellArgs?: string[]; // Shell args for local terminals (from discovery)
+  localShellName?: string;   // Display name for local shell (e.g., "Zsh", "Ubuntu (WSL)")
+  localShellIcon?: string;   // Icon identifier for local shell (e.g., "zsh", "ubuntu")
 }
 
 export interface RemoteFile {