fix #1013: stop ghost text from drawing over untracked echoed input (#1042)

Inline (ghost-text) suggestions render suggestion.substring(trackedInput.length)
after the cursor, where trackedInput is a client-side reconstruction of the
command line (buffer heuristics + keystroke prediction, to mask SSH echo
latency). On hosts with non-standard echo — hardware bastion hosts / network OS
like `ecOS#` (#1013, previously #756 / #906) — that reconstruction drifts and
the ghost gets painted over characters the user already typed (`int` + ghost
`terface` -> `intterface`).

Add a fail-safe consistency check: on each post-echo render, if the real
terminal line before the cursor contains the tracked input followed by more
untracked, non-whitespace characters (reality is AHEAD of what we tracked),
hide the ghost instead of drawing it over real text. SSH echo latency is the
opposite case (the line is a prefix-behind of the tracked input) and is
deliberately not flagged, so the ghost stays responsive on slow links. The
check is ASCII-only (wide-char column mapping is ambiguous) and fail-open, so
it can only ever suppress a ghost that would otherwise corrupt — never change
correct behaviour.

This converts the recurring "ghost shows already-typed characters" bug into
"ghost simply doesn't show" on devices we can't track reliably.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

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

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

.github/workflows/build.yml

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

App.tsx

@@ -28,7 +28,12 @@ import { upsertKnownHost } from './domain/knownHosts';
 import { materializeHostProxyProfile } from './domain/proxyProfiles';
 import { resolveHostAuth } from './domain/sshAuth';
 import { isEncryptedCredentialPlaceholder } from './domain/credentials';
-import { applyCustomAccentToTerminalTheme, resolveHostTerminalThemeId } from './domain/terminalAppearance';
+import {
+  applyCustomAccentToTerminalTheme,
+  mergeTerminalHostUpdate,
+  resolveHostTerminalThemeId,
+} from './domain/terminalAppearance';
+import { selectConnectionLogForTerminalDataCapture } from './domain/connectionLog';
 import { collectSessionIds } from './domain/workspace';
 import { resolveCloseIntent } from './application/state/resolveCloseIntent';
 import { resolveSnippetsShortcutIntent } from './application/state/resolveSnippetsShortcutIntent';
@@ -55,6 +60,7 @@ import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, D
 import { Input } from './components/ui/input';
 import { Label } from './components/ui/label';
 import { ToastProvider, toast } from './components/ui/toast';
+import { TooltipProvider } from './components/ui/tooltip';
 import { VaultView, VaultSection } from './components/VaultView';
 import { QuickAddSnippetDialog } from './components/QuickAddSnippetDialog';
 import { AddToWorkspaceDialog } from './components/workspace/AddToWorkspaceDialog';
@@ -176,12 +182,22 @@ const TerminalLayerMount: React.FC<TerminalLayerProps> = (props) => {
 
   useEffect(() => {
     if (shouldMount) return;
-    // Warm up the terminal layer shortly after first paint to reduce latency when opening a session.
-    const id = window.setTimeout(() => setShouldMount(true), 1200);
+    type IdleWindow = Window & {
+      requestIdleCallback?: (callback: () => void, options?: { timeout: number }) => number;
+      cancelIdleCallback?: (id: number) => void;
+    };
+    const idleWindow = window as IdleWindow;
+    if (typeof idleWindow.requestIdleCallback === "function") {
+      const id = idleWindow.requestIdleCallback(() => setShouldMount(true), { timeout: 5000 });
+      return () => idleWindow.cancelIdleCallback?.(id);
+    }
+    const id = window.setTimeout(() => setShouldMount(true), 5000);
     return () => window.clearTimeout(id);
   }, [shouldMount]);
 
-  if (!shouldMount) return null;
+  const shouldRender = shouldMount || isVisible;
+
+  if (!shouldRender) return null;
 
   return (
     <Suspense fallback={null}>
@@ -300,6 +316,16 @@ function App({ settings }: { settings: SettingsState }) {
   keysRef.current = keys;
   const knownHostsRef = useRef(knownHosts);
   knownHostsRef.current = knownHosts;
+  // Bridge the gap while useVaultState hydrates: its async init awaits
+  // hosts/keys/identities/proxyProfiles decryption before reading knownHosts,
+  // so the state is briefly [] at boot even when localStorage has entries.
+  // Any SSH connect during that window (manual click or restored session)
+  // would otherwise see no trusted hosts and prompt for fingerprint
+  // re-confirmation. Mirrors the same fallback already used by sync payloads.
+  const effectiveKnownHosts = useMemo(
+    () => getEffectiveKnownHosts(knownHosts) ?? [],
+    [knownHosts],
+  );
 
   const {
     sessions,
@@ -335,6 +361,7 @@ function App({ settings }: { settings: SettingsState }) {
     splitSession,
     toggleWorkspaceViewMode,
     setWorkspaceFocusedSession,
+    reorderWorkspaceSessions,
     moveFocusInWorkspace,
     runSnippet,
     orphanSessions,
@@ -629,7 +656,7 @@ function App({ settings }: { settings: SettingsState }) {
       const effectiveHost = resolveEffectiveHost(host);
       void startTunnel(rule, effectiveHost, hosts.map(resolveEffectiveHost), keys, identities, (status, error) => {
         if (status === "error" && error) toast.error(error);
-      }, rule.autoStart);
+      }, rule.autoStart, terminalSettings);
       return;
     }
 
@@ -836,6 +863,7 @@ function App({ settings }: { settings: SettingsState }) {
     identities,
     proxyProfiles,
     groupConfigs,
+    terminalSettings,
   });
 
   // Sync tray menu data + handle tray actions
@@ -1703,6 +1731,12 @@ function App({ settings }: { settings: SettingsState }) {
     }
   }, [updateSessionStatus, updateHostLastConnected]);
 
+  const handleUpdateHostFromTerminal = useCallback((host: Host) => {
+    updateHosts(hosts.map((h) => (
+      h.id === host.id ? mergeTerminalHostUpdate(h, host) : h
+    )));
+  }, [hosts, updateHosts]);
+
   // Wrapper to create serial session with logging
   const handleConnectSerial = useCallback((config: SerialConfig, options?: { charset?: string }) => {
     const { username, hostname } = systemInfoRef.current;
@@ -1729,15 +1763,10 @@ function App({ settings }: { settings: SettingsState }) {
     if (IS_DEV) console.log('[handleTerminalDataCapture] Session', session);
     if (IS_DEV) console.log('[handleTerminalDataCapture] All logs:', connectionLogs.map(l => ({ id: l.id, sessionId: l.sessionId, hostname: l.hostname, endTime: l.endTime, hasTerminalData: !!l.terminalData })));
 
-    // Prefer the persisted sessionId because the session may already have been
-    // removed from state by the time the terminal unmount cleanup runs.
-    const matchingLog = connectionLogs
-      .filter((log) => {
-        if (log.endTime || log.terminalData) return false;
-        if (log.sessionId) return log.sessionId === sessionId;
-        return !!session && log.hostname === session.hostname;
-      })
-      .sort((a, b) => b.startTime - a.startTime)[0];
+    const matchingLog = selectConnectionLogForTerminalDataCapture(
+      connectionLogs,
+      { sessionId, hostname: session?.hostname },
+    );
 
     if (IS_DEV) console.log('[handleTerminalDataCapture] Matching log', matchingLog);
 
@@ -1995,11 +2024,11 @@ function App({ settings }: { settings: SettingsState }) {
             snippets={snippets}
             snippetPackages={snippetPackages}
             customGroups={customGroups}
-            knownHosts={knownHosts}
+            knownHosts={effectiveKnownHosts}
             shellHistory={shellHistory}
             connectionLogs={connectionLogs}
             managedSources={managedSources}
-            sessions={sessions}
+            sessionCount={sessions.length}
             hotkeyScheme={hotkeyScheme}
             keyBindings={keyBindings}
             terminalThemeId={terminalThemeId}
@@ -2035,6 +2064,7 @@ function App({ settings }: { settings: SettingsState }) {
             showOnlyUngroupedHostsInRoot={settings.showOnlyUngroupedHostsInRoot}
             navigateToSection={navigateToSection}
             onNavigateToSectionHandled={() => setNavigateToSection(null)}
+            terminalSettings={terminalSettings}
           />
         </VaultViewContainer>
 
@@ -2054,6 +2084,7 @@ function App({ settings }: { settings: SettingsState }) {
           keyBindings={keyBindings}
           editorWordWrap={editorWordWrap}
           setEditorWordWrap={setEditorWordWrap}
+          terminalSettings={terminalSettings}
         />
 
         <TerminalLayerMount
@@ -2066,7 +2097,7 @@ function App({ settings }: { settings: SettingsState }) {
           snippetPackages={snippetPackages}
           sessions={sessions}
           workspaces={workspaces}
-          knownHosts={knownHosts}
+          knownHosts={effectiveKnownHosts}
           draggingSessionId={draggingSessionId}
           terminalTheme={currentTerminalTheme}
           followAppTerminalTheme={followAppTerminalTheme}
@@ -2085,7 +2116,7 @@ function App({ settings }: { settings: SettingsState }) {
           onCloseSession={closeSession}
           onUpdateSessionStatus={handleSessionStatusChange}
           onUpdateHostDistro={updateHostDistro}
-          onUpdateHost={(host) => updateHosts(hosts.map(h => h.id === host.id ? host : h))}
+          onUpdateHost={handleUpdateHostFromTerminal}
           onAddKnownHost={handleAddKnownHost}
           onCommandExecuted={(command, hostId, hostLabel, sessionId) => {
             addShellHistoryEntry({ command, hostId, hostLabel, sessionId });
@@ -2100,6 +2131,7 @@ function App({ settings }: { settings: SettingsState }) {
           onSetDraggingSessionId={setDraggingSessionId}
           onToggleWorkspaceViewMode={toggleWorkspaceViewMode}
           onSetWorkspaceFocusedSession={setWorkspaceFocusedSession}
+          onReorderWorkspaceSessions={reorderWorkspaceSessions}
           onSplitSession={splitSessionWithCurrentShell}
           isBroadcastEnabled={isBroadcastEnabled}
           onToggleBroadcast={toggleBroadcast}
@@ -2423,7 +2455,9 @@ function AppWithProviders() {
   return (
     <I18nProvider locale={settings.uiLanguage}>
       <ToastProvider>
-        <App settings={settings} />
+        <TooltipProvider delayDuration={300}>
+          <App settings={settings} />
+        </TooltipProvider>
       </ToastProvider>
     </I18nProvider>
   );

application/i18n/locales/en.ts

@@ -273,6 +273,17 @@ const en: Messages = {
   'settings.terminal.section.keywordHighlight': 'Keyword highlighting',
   'settings.terminal.font.family': 'Font',
   'settings.terminal.font.family.desc': 'Terminal font family',
+  'settings.terminal.font.cjk': 'CJK font',
+  'settings.terminal.font.cjk.desc': 'Font used for Chinese / Japanese / Korean characters; "Auto" picks one based on the primary font',
+  'settings.terminal.font.cjk.option.auto': 'Auto · paired with the primary font',
+  'settings.terminal.font.cjk.option.sarasaSC': 'Sarasa Mono SC (Iosevka + Source Han SC)',
+  'settings.terminal.font.cjk.option.sarasaTC': 'Sarasa Mono TC (Iosevka + Source Han TC)',
+  'settings.terminal.font.cjk.option.mapleCN': 'Maple Mono CN',
+  'settings.terminal.font.cjk.option.sourceHan': 'Source Han Mono SC',
+  'settings.terminal.font.cjk.option.notoCJK': 'Noto Sans Mono CJK SC',
+  'settings.terminal.font.cjk.option.lxgwWenkai': 'LXGW WenKai Mono',
+  'settings.terminal.font.cjk.option.simSun': 'SimSun',
+  'settings.terminal.font.cjk.option.legacy': '{font} · not recommended (proportional font)',
   'settings.terminal.font.size': 'Font size',
   'settings.terminal.font.size.desc': 'Terminal text size',
   'settings.terminal.font.weight': 'Font weight',
@@ -312,6 +323,9 @@ const en: Messages = {
   'settings.terminal.behavior.preserveSelectionOnInput': 'Keep selection while typing',
   'settings.terminal.behavior.preserveSelectionOnInput.desc':
     'Don\'t clear mouse-selected text when typing — useful for selecting a path then pasting it after a command prefix like `sz `.',
+  'settings.terminal.behavior.forcePromptNewLine': 'Prompt on a new line',
+  'settings.terminal.behavior.forcePromptNewLine.desc':
+    'When the final line of command output is not terminated by a newline, move the recognized shell prompt to the next visual line.',
   'settings.terminal.behavior.osc52Clipboard': 'OSC-52 clipboard',
   'settings.terminal.behavior.osc52Clipboard.desc':
     'Allow remote programs (tmux, vim, etc.) to access the local clipboard via OSC-52 escape sequences.',
@@ -347,12 +361,16 @@ 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.resetDefaults': 'Reset built-ins to defaults',
+  'settings.terminal.keywordHighlight.resetBuiltIn': 'Restore default label and patterns',
   'settings.terminal.keywordHighlight.addCustom': 'Add Custom Rule',
   'settings.terminal.keywordHighlight.editCustom': 'Edit Rule',
+  'settings.terminal.keywordHighlight.editBuiltIn': 'Edit Built-in Rule',
   'settings.terminal.keywordHighlight.labelField': 'Label & Color',
   'settings.terminal.keywordHighlight.labelPlaceholder': 'Label (e.g., Down)',
-  'settings.terminal.keywordHighlight.patternField': 'Regex Pattern',
-  'settings.terminal.keywordHighlight.patternPlaceholder': 'Regex (e.g., \\bdown\\b)',
+  'settings.terminal.keywordHighlight.patternField': 'Regex Patterns',
+  'settings.terminal.keywordHighlight.patternPlaceholder': 'One regex per line (e.g., \\bdown\\b)',
+  'settings.terminal.keywordHighlight.patternHint': 'One regex per line. Patterns are matched case-insensitively with the global flag.',
   'settings.terminal.keywordHighlight.invalidPattern': 'Invalid regex pattern',
   'settings.terminal.keywordHighlight.preview': 'Preview',
   'settings.terminal.section.localShell': 'Local Shell',
@@ -374,7 +392,9 @@ const en: Messages = {
   'settings.terminal.localShell.startDir.isFile': 'Path is a file, not a directory',
   'settings.terminal.section.connection': 'Connection',
   'settings.terminal.connection.keepaliveInterval': 'Keepalive Interval',
-  'settings.terminal.connection.keepaliveInterval.desc': 'How often (in seconds) to send SSH-level keepalive packets to server. Set to 0 to disable.',
+  'settings.terminal.connection.keepaliveInterval.desc': 'How often (in seconds) to send SSH-level keepalive packets. Set to 0 to disable globally — note that individual hosts can override this in their own settings.',
+  'settings.terminal.connection.keepaliveCountMax': 'Max unanswered keepalives',
+  'settings.terminal.connection.keepaliveCountMax.desc': 'Unanswered keepalives before the connection is declared dead. Higher values are more forgiving of brief network glitches and SSH servers that respond slowly.',
   'settings.terminal.connection.x11Display': 'X11 display',
   'settings.terminal.connection.x11Display.desc': 'Optional local display address for X11 forwarding. Leave empty to use the system default.',
   'settings.terminal.connection.x11Display.placeholder': 'Auto (:0 or DISPLAY)',
@@ -802,6 +822,11 @@ const en: Messages = {
   'sftp.transfers.collapseChildList': 'Hide',
   'sftp.transfers.retryAction': 'Retry',
   'sftp.transfers.dismissAction': 'Dismiss',
+  'sftp.transfers.openTargetFolder': 'Open target folder',
+  'sftp.transfers.openTargetFolderError': 'Could not open target folder',
+  'sftp.transfers.copyTargetPath': 'Copy target path',
+  'sftp.transfers.copyTargetPathSuccess': 'Target path copied',
+  'sftp.transfers.copyTargetPathError': 'Could not copy target path',
   'sftp.transfers.resizeNameColumn': 'Resize file name column',
   'sftp.transfers.dragToResize': 'Drag to resize',
   'sftp.goUp': 'Go up',
@@ -1119,6 +1144,12 @@ 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.section.keepalive': 'Keepalive',
+  'hostDetails.keepalive.override': 'Override global keepalive',
+  'hostDetails.keepalive.desc': 'Use a custom keepalive policy for this host instead of the global setting. Useful for older routers or switches whose SSH server does not reply to keepalive@openssh.com requests — set interval to 0 to disable keepalive entirely on this host.',
+  'hostDetails.keepalive.interval': 'Interval (seconds)',
+  'hostDetails.keepalive.countMax': 'Max unanswered keepalives',
+  'hostDetails.keepalive.disabledHint': 'Interval = 0 disables keepalive for this host. The session will rely on TCP-level timeouts to detect a dead connection.',
   'hostDetails.backspaceBehavior': 'Backspace Behavior',
   'hostDetails.backspaceBehavior.default': 'Default',
   'hostDetails.jumpHosts': 'Proxy via Hosts',
@@ -1263,6 +1294,10 @@ const en: Messages = {
   'terminal.toolbar.hostHighlight.clearAll': 'Clear All',
   'terminal.toolbar.hostHighlight.changeColor': 'Change highlight color for',
   'terminal.toolbar.hostHighlight.selectColor': 'Select color for new rule',
+  'terminal.statusbar.copyHostname.label': 'Copy host address',
+  'terminal.statusbar.copyHostname.tooltip': 'Copy host address ({hostname})',
+  'terminal.statusbar.copyHostname.toast': 'Copied host address: {hostname}',
+  'terminal.statusbar.copyHostname.error': 'Failed to copy host address to clipboard',
   'terminal.serverStats.cpu': 'CPU Usage',
   'terminal.serverStats.cpuCores': 'CPU Core Usage',
   'terminal.serverStats.memory': 'Memory Usage',
@@ -1296,6 +1331,7 @@ const en: Messages = {
   'terminal.menu.paste': 'Paste',
   'terminal.menu.pasteSelection': 'Paste Selection',
   'terminal.menu.selectAll': 'Select All',
+  'terminal.menu.reconnect': 'Reconnect',
   'terminal.menu.splitHorizontal': 'Split Horizontal',
   'terminal.menu.splitVertical': 'Split Vertical',
   'terminal.menu.clearBuffer': 'Clear Buffer',
@@ -1899,7 +1935,7 @@ const en: Messages = {
 
   // AI Claude Code
   'ai.claude.title': 'Claude Code',
-  'ai.claude.description': "Anthropic's agentic coding assistant. Uses claude-agent-acp for ACP protocol streaming.",
+  'ai.claude.description': "Anthropic's agentic coding assistant. Requires the system Claude Code CLI.",
   'ai.claude.detecting': 'Detecting...',
   'ai.claude.detected': 'Detected',
   'ai.claude.notFound': 'Not found',
@@ -2031,6 +2067,32 @@ const en: Messages = {
   'ai.safety.blocklist.reset': 'Reset to defaults',
   'ai.safety.blocklist.add': 'Add pattern',
   'ai.safety.note': 'Command Blocklist, Command Timeout, and Observer mode are enforced at the MCP Server level, applying to all agent types. Confirm mode and Max Iterations are fully enforced for the built-in agent; ACP agents may have their own internal controls for these settings.',
+
+  // Unified tooltips for terminal workspace and top tabs (issue #954)
+  'terminal.layer.addTerminal': 'Add Terminal',
+  'terminal.layer.switchToSplitView': 'Switch to Split View',
+  'terminal.layer.sftp': 'SFTP',
+  'terminal.layer.scripts': 'Scripts',
+  'terminal.layer.theme': 'Theme',
+  'terminal.layer.aiChat': 'AI Chat',
+  'terminal.layer.movePanelLeft': 'Move panel to left',
+  'terminal.layer.movePanelRight': 'Move panel to right',
+  'terminal.layer.closePanel': 'Close panel',
+  'topTabs.openQuickSwitcher': 'Open quick switcher',
+  'topTabs.moreTabs': 'More tabs',
+  'topTabs.aiAssistant': 'AI Assistant',
+  'topTabs.toggleTheme': 'Toggle theme',
+  'topTabs.openSettings': 'Open Settings',
+  'ai.chat.sessionHistory': 'Session history',
+  'ai.chat.attach': 'Attach',
+  'ai.chat.collapse': 'Collapse',
+  'ai.chat.expand': 'Expand',
+  'ai.chat.enableAgent': 'Enable {name}',
+  'zmodem.waitingForRemote': 'Waiting for remote...',
+  'zmodem.uploading': 'Uploading',
+  'zmodem.downloading': 'Downloading',
+  'zmodem.cancelTransfer': 'Cancel transfer (Ctrl+C)',
+  'settings.shortcuts.resetToDefault': 'Reset to default',
 };
 
 export default en;

application/i18n/locales/zh-CN.ts

@@ -586,6 +586,11 @@ const zhCN: Messages = {
   'sftp.transfers.collapseChildList': '收起',
   'sftp.transfers.retryAction': '重试',
   'sftp.transfers.dismissAction': '移除',
+  'sftp.transfers.openTargetFolder': '打开目标目录',
+  'sftp.transfers.openTargetFolderError': '无法打开目标目录',
+  'sftp.transfers.copyTargetPath': '复制目标路径',
+  'sftp.transfers.copyTargetPathSuccess': '已复制目标路径',
+  'sftp.transfers.copyTargetPathError': '无法复制目标路径',
   'sftp.transfers.resizeNameColumn': '调整文件名列宽',
   'sftp.transfers.dragToResize': '拖拽调整高度',
   'sftp.goUp': '上一级',
@@ -748,6 +753,12 @@ 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.section.keepalive': '会话保活',
+  'hostDetails.keepalive.override': '为此主机单独配置',
+  'hostDetails.keepalive.desc': '为该主机使用专属的保活策略，而不是跟随全局设置。适用于不响应 keepalive@openssh.com 请求的老旧路由器 / 交换机——将间隔设为 0 可对该主机彻底关闭保活。',
+  'hostDetails.keepalive.interval': '间隔（秒）',
+  'hostDetails.keepalive.countMax': '最大无响应保活次数',
+  'hostDetails.keepalive.disabledHint': '间隔为 0 时该主机不发送保活包，仅依赖 TCP 层超时检测断连。',
   'hostDetails.backspaceBehavior': 'Backspace 行为',
   'hostDetails.backspaceBehavior.default': '默认',
   'hostDetails.jumpHosts': '通过主机代理',
@@ -857,6 +868,10 @@ const zhCN: Messages = {
   'terminal.toolbar.hostHighlight.clearAll': '清除全部',
   'terminal.toolbar.hostHighlight.changeColor': '更改高亮颜色',
   'terminal.toolbar.hostHighlight.selectColor': '选择新规则的颜色',
+  'terminal.statusbar.copyHostname.label': '复制主机地址',
+  'terminal.statusbar.copyHostname.tooltip': '复制主机地址（{hostname}）',
+  'terminal.statusbar.copyHostname.toast': '已复制主机地址：{hostname}',
+  'terminal.statusbar.copyHostname.error': '复制主机地址失败',
   'terminal.serverStats.cpu': 'CPU 使用率',
   'terminal.serverStats.cpuCores': 'CPU 核心使用率',
   'terminal.serverStats.memory': '内存使用',
@@ -890,6 +905,7 @@ const zhCN: Messages = {
   'terminal.menu.paste': '粘贴',
   'terminal.menu.pasteSelection': '粘贴选中文本',
   'terminal.menu.selectAll': '全选',
+  'terminal.menu.reconnect': '重新连接',
   'terminal.menu.splitHorizontal': '水平分屏',
   'terminal.menu.splitVertical': '垂直分屏',
   'terminal.menu.clearBuffer': '清空缓冲区',
@@ -1402,6 +1418,17 @@ const zhCN: Messages = {
   'settings.terminal.section.keywordHighlight': '关键字高亮',
   'settings.terminal.font.family': '字体',
   'settings.terminal.font.family.desc': '终端字体',
+  'settings.terminal.font.cjk': '中文 / CJK 字体',
+  'settings.terminal.font.cjk.desc': '用于渲染中 / 日 / 韩字符的字体；"Auto" 会按主字体智能搭配',
+  'settings.terminal.font.cjk.option.auto': 'Auto · 按主字体智能搭配',
+  'settings.terminal.font.cjk.option.sarasaSC': 'Sarasa Mono SC （更纱黑体 简）',
+  'settings.terminal.font.cjk.option.sarasaTC': 'Sarasa Mono TC （更纱黑体 繁）',
+  'settings.terminal.font.cjk.option.mapleCN': 'Maple Mono CN',
+  'settings.terminal.font.cjk.option.sourceHan': 'Source Han Mono SC （思源等宽）',
+  'settings.terminal.font.cjk.option.notoCJK': 'Noto Sans Mono CJK SC',
+  'settings.terminal.font.cjk.option.lxgwWenkai': 'LXGW WenKai Mono （霞鹜文楷等宽）',
+  'settings.terminal.font.cjk.option.simSun': 'SimSun （宋体）',
+  'settings.terminal.font.cjk.option.legacy': '{font} · 不推荐（非等宽字体）',
   'settings.terminal.font.size': '字体大小',
   'settings.terminal.font.size.desc': '终端文字大小',
   'settings.terminal.font.weight': '字重',
@@ -1438,6 +1465,9 @@ const zhCN: Messages = {
   'settings.terminal.behavior.preserveSelectionOnInput': '输入时保留选区',
   'settings.terminal.behavior.preserveSelectionOnInput.desc':
     '键盘输入时不清除鼠标选中的文本，方便选中路径后输入 `sz ` 之类命令再粘贴。',
+  'settings.terminal.behavior.forcePromptNewLine': '提示符另起一行',
+  'settings.terminal.behavior.forcePromptNewLine.desc':
+    '当命令输出的最后一行未以换行符结束时，将识别到的 shell 提示符移动到下一行显示。',
   'settings.terminal.behavior.osc52Clipboard': 'OSC-52 剪贴板',
   'settings.terminal.behavior.osc52Clipboard.desc':
     '允许远程程序（tmux、vim 等）通过 OSC-52 转义序列访问本地剪贴板。',
@@ -1469,12 +1499,16 @@ 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.resetDefaults': '把内置规则恢复为默认',
+  'settings.terminal.keywordHighlight.resetBuiltIn': '恢复内置标签与正则',
   'settings.terminal.keywordHighlight.addCustom': '添加自定义规则',
   'settings.terminal.keywordHighlight.editCustom': '编辑规则',
+  'settings.terminal.keywordHighlight.editBuiltIn': '编辑内置规则',
   'settings.terminal.keywordHighlight.labelField': '标签与颜色',
   'settings.terminal.keywordHighlight.labelPlaceholder': '标签（如 Down）',
   'settings.terminal.keywordHighlight.patternField': '正则表达式',
-  'settings.terminal.keywordHighlight.patternPlaceholder': '正则表达式（如 \\bdown\\b）',
+  'settings.terminal.keywordHighlight.patternPlaceholder': '每行一个正则（如 \\bdown\\b）',
+  'settings.terminal.keywordHighlight.patternHint': '每行一个正则。匹配忽略大小写，全局匹配。',
   'settings.terminal.keywordHighlight.invalidPattern': '无效的正则表达式',
   'settings.terminal.keywordHighlight.preview': '预览',
   'settings.terminal.section.localShell': '本地 Shell',
@@ -1496,7 +1530,9 @@ const zhCN: Messages = {
   'settings.terminal.localShell.startDir.isFile': '路径是文件，不是目录',
   'settings.terminal.section.connection': '连接',
   'settings.terminal.connection.keepaliveInterval': '会话保持间隔',
-  'settings.terminal.connection.keepaliveInterval.desc': '向服务器发送 SSH 级别保活数据包的频率（秒）。设为 0 表示禁用。',
+  'settings.terminal.connection.keepaliveInterval.desc': '向服务器发送 SSH 保活数据包的频率（秒）。设为 0 表示全局禁用——单个主机可在自己的设置里覆盖此值。',
+  'settings.terminal.connection.keepaliveCountMax': '最大无响应保活次数',
+  'settings.terminal.connection.keepaliveCountMax.desc': '判定连接死亡前允许的无响应保活次数。值越大对短暂网络抖动和响应慢的 SSH 服务越宽容。',
   'settings.terminal.connection.x11Display': 'X11 显示地址',
   'settings.terminal.connection.x11Display.desc': '可选的本机 X11 显示地址。留空则使用系统默认值。',
   'settings.terminal.connection.x11Display.placeholder': '自动（:0 或 DISPLAY）',
@@ -1908,7 +1944,7 @@ const zhCN: Messages = {
 
   // AI Claude Code
   'ai.claude.title': 'Claude Code',
-  'ai.claude.description': 'Anthropic 的智能编程助手。使用 claude-agent-acp 进行 ACP 协议流式传输。',
+  'ai.claude.description': 'Anthropic 的智能编程助手。需要系统中已安装 Claude Code CLI。',
   'ai.claude.detecting': '检测中...',
   'ai.claude.detected': '已检测到',
   'ai.claude.notFound': '未找到',
@@ -2040,6 +2076,32 @@ const zhCN: Messages = {
   'ai.safety.blocklist.reset': '恢复默认',
   'ai.safety.blocklist.add': '添加规则',
   'ai.safety.note': '命令黑名单、命令超时和观察者模式通过 MCP Server 层强制执行，对所有 Agent 类型生效。确认模式和最大迭代次数对内置 Agent 完全强制执行；ACP Agent 可能有自己的内部控制。',
+
+  // 统一终端工作区和顶部标签的 tooltip 文案 (issue #954)
+  'terminal.layer.addTerminal': '添加终端',
+  'terminal.layer.switchToSplitView': '切换到分屏视图',
+  'terminal.layer.sftp': '文件传输',
+  'terminal.layer.scripts': '脚本',
+  'terminal.layer.theme': '主题',
+  'terminal.layer.aiChat': 'AI 助手',
+  'terminal.layer.movePanelLeft': '面板移至左侧',
+  'terminal.layer.movePanelRight': '面板移至右侧',
+  'terminal.layer.closePanel': '关闭面板',
+  'topTabs.openQuickSwitcher': '打开快速切换',
+  'topTabs.moreTabs': '更多标签页',
+  'topTabs.aiAssistant': 'AI 助手',
+  'topTabs.toggleTheme': '切换主题',
+  'topTabs.openSettings': '打开设置',
+  'ai.chat.sessionHistory': '会话历史',
+  'ai.chat.attach': '附件',
+  'ai.chat.collapse': '收起',
+  'ai.chat.expand': '展开',
+  'ai.chat.enableAgent': '启用 {name}',
+  'zmodem.waitingForRemote': '等待远端...',
+  'zmodem.uploading': '上传中',
+  'zmodem.downloading': '下载中',
+  'zmodem.cancelTransfer': '取消传输 (Ctrl+C)',
+  'settings.shortcuts.resetToDefault': '重置为默认',
 };
 
 export default zhCN;

application/i18n/messages.ts

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

application/state/activeTabStore.ts

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

application/state/editorTabStore.ts

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

application/state/fontStore.ts

@@ -1,6 +1,7 @@
 import { useSyncExternalStore } from 'react';
 import { TERMINAL_FONTS, type TerminalFont } from '../../infrastructure/config/fonts';
-import { getMonospaceFonts } from '../../lib/localFonts';
+import { getAllSystemFontFamilies, getMonospaceFonts } from '../../lib/localFonts';
+import { setSystemFamilies } from '../../lib/fontAvailability';
 
 /**
  * Global font store - singleton pattern using useSyncExternalStore
@@ -60,7 +61,14 @@ class FontStore {
     this.setState({ isLoading: true, error: null });
 
     try {
-      const localFonts = await getMonospaceFonts();
+      // Populate the authoritative installed-family set used by
+      // fontAvailability.isFontInstalled. Runs in parallel with the
+      // monospace-only query (both share an underlying cache).
+      const [localFonts, systemFamilies] = await Promise.all([
+        getMonospaceFonts(),
+        getAllSystemFontFamilies(),
+      ]);
+      setSystemFamilies(systemFamilies);
       
       // Combine default fonts with local fonts, deduplicate by id
       const fontMap = new Map<string, TerminalFont>();

application/state/resolveTerminalSessionExitIntent.test.ts

@@ -0,0 +1,18 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+import { resolveTerminalSessionExitIntent } from "./resolveTerminalSessionExitIntent.ts";
+
+test("backend exited events keep the tab and mark it disconnected", () => {
+  assert.deepEqual(
+    resolveTerminalSessionExitIntent({ reason: "exited", exitCode: 0 }),
+    { kind: "markDisconnected" },
+  );
+});
+
+test("backend timeout events keep the tab and mark it disconnected", () => {
+  assert.deepEqual(
+    resolveTerminalSessionExitIntent({ reason: "timeout", error: "idle timeout" }),
+    { kind: "markDisconnected" },
+  );
+});

application/state/resolveTerminalSessionExitIntent.ts

@@ -0,0 +1,17 @@
+export type TerminalSessionExitEvent = {
+  exitCode?: number;
+  signal?: number;
+  error?: string;
+  reason?: "exited" | "error" | "timeout" | "closed";
+};
+
+export type TerminalSessionExitIntent =
+  | { kind: "markDisconnected" };
+
+export function resolveTerminalSessionExitIntent(
+  _evt: TerminalSessionExitEvent,
+): TerminalSessionExitIntent {
+  // Backend exits can be remote idle timeouts, shell termination, or transport closes.
+  // Explicit user closes bypass this policy and call the close-session path directly.
+  return { kind: "markDisconnected" };
+}

application/state/sftp/bookmarkHelpers.ts

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

application/state/sftp/globalSftpBookmarks.ts

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

application/state/sftp/types.ts

@@ -64,4 +64,10 @@ export interface SftpStateOptions {
   useCompressedUpload?: boolean;
   defaultShowHiddenFiles?: boolean;
   autoConnectLocalOnMount?: boolean;
+  /**
+   * Global SSH keepalive settings, forwarded through to per-SFTP-connection
+   * keepalive resolution so a host that has opted into its own override
+   * is honored for SFTP browsing too (not just the terminal session).
+   */
+  terminalSettings?: { keepaliveInterval: number; keepaliveCountMax: number };
 }

application/state/sftp/useSftpConnections.ts

@@ -11,6 +11,7 @@ interface UseSftpConnectionsParams {
   hosts: Host[];
   keys: SSHKey[];
   identities: Identity[];
+  terminalSettings?: { keepaliveInterval: number; keepaliveCountMax: number };
   leftTabsRef: MutableRefObject<{ tabs: SftpPane[]; activeTabId: string | null }>;
   rightTabsRef: MutableRefObject<{ tabs: SftpPane[]; activeTabId: string | null }>;
   leftTabs: { tabs: SftpPane[] };
@@ -44,6 +45,7 @@ export const useSftpConnections = ({
   hosts,
   keys,
   identities,
+  terminalSettings,
   leftTabsRef,
   rightTabsRef,
   leftTabs,
@@ -65,7 +67,7 @@ export const useSftpConnections = ({
   createEmptyPane,
   autoConnectLocalOnMount = true,
 }: UseSftpConnectionsParams): UseSftpConnectionsResult => {
-  const getHostCredentials = useSftpHostCredentials({ hosts, keys, identities });
+  const getHostCredentials = useSftpHostCredentials({ hosts, keys, identities, terminalSettings });
   const { listLocalFiles, listRemoteFiles } = useSftpDirectoryListing();
 
   const connect = useCallback(

application/state/sftp/useSftpHostCredentials.ts

@@ -1,12 +1,19 @@
 import { useCallback } from "react";
-import type { Host, Identity, SSHKey } from "../../../domain/models";
+import type { Host, Identity, SSHKey, TerminalSettings } from "../../../domain/models";
 import { isEncryptedCredentialPlaceholder, sanitizeCredentialValue } from "../../../domain/credentials";
 import { resolveBridgeKeyAuth, resolveHostAuth } from "../../../domain/sshAuth";
+import { resolveHostKeepalive } from "../../../domain/host";
+
+// Fallback used when no global TerminalSettings are wired through (older
+// call sites or tests). Matches DEFAULT_TERMINAL_SETTINGS so behavior is
+// identical whether or not the caller passes settings.
+const FALLBACK_KEEPALIVE = { keepaliveInterval: 30, keepaliveCountMax: 10 };
 
 interface UseSftpHostCredentialsParams {
   hosts: Host[];
   keys: SSHKey[];
   identities: Identity[];
+  terminalSettings?: Pick<TerminalSettings, 'keepaliveInterval' | 'keepaliveCountMax'>;
 }
 
 export const buildSftpHostCredentials = ({
@@ -14,7 +21,9 @@ export const buildSftpHostCredentials = ({
   hosts,
   keys,
   identities,
+  terminalSettings,
 }: UseSftpHostCredentialsParams & { host: Host }): NetcattySSHOptions => {
+  const globalKeepalive = terminalSettings ?? FALLBACK_KEEPALIVE;
   if (host.proxyProfileId && !host.proxyConfig) {
     throw new Error(`Saved proxy for host "${host.label || host.hostname}" is missing. Open host settings and select a valid proxy.`);
   }
@@ -79,6 +88,7 @@ export const buildSftpHostCredentials = ({
       ) {
         throw new Error(`Saved credentials for jump host "${jumpHost.label || jumpHost.hostname}" cannot be decrypted on this device. Open host settings and re-enter them.`);
       }
+      const hopKeepalive = resolveHostKeepalive(jumpHost, globalKeepalive);
       return {
         hostname: jumpHost.hostname,
         port: jumpHost.port || 22,
@@ -101,6 +111,8 @@ export const buildSftpHostCredentials = ({
           }
           : undefined,
         identityFilePaths: jumpKeyAuth.identityFilePaths,
+        keepaliveInterval: hopKeepalive.interval,
+        keepaliveCountMax: hopKeepalive.countMax,
       };
     });
   }
@@ -129,6 +141,7 @@ export const buildSftpHostCredentials = ({
     throw new Error("Saved credentials cannot be decrypted on this device. Open host settings and re-enter them.");
   }
 
+  const targetKeepalive = resolveHostKeepalive(host, globalKeepalive);
   return {
     hostname: host.hostname,
     username: resolved.username,
@@ -144,6 +157,8 @@ export const buildSftpHostCredentials = ({
     jumpHosts: jumpHosts && jumpHosts.length > 0 ? jumpHosts : undefined,
     sudo: host.sftpSudo,
     identityFilePaths: keyAuth.identityFilePaths,
+    keepaliveInterval: targetKeepalive.interval,
+    keepaliveCountMax: targetKeepalive.countMax,
   };
 };
 
@@ -151,8 +166,9 @@ export const useSftpHostCredentials = ({
   hosts,
   keys,
   identities,
+  terminalSettings,
 }: UseSftpHostCredentialsParams) =>
   useCallback(
-    (host: Host): NetcattySSHOptions => buildSftpHostCredentials({ host, hosts, keys, identities }),
-    [hosts, identities, keys],
+    (host: Host): NetcattySSHOptions => buildSftpHostCredentials({ host, hosts, keys, identities, terminalSettings }),
+    [hosts, identities, keys, terminalSettings],
   );

application/state/sftp/utils.test.ts

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

application/state/sftp/utils.ts

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

application/state/useAgentDiscovery.ts

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

application/state/useAutoSync.ts

@@ -19,11 +19,11 @@ import { isProviderReadyForSync, type CloudProvider, type SyncPayload } from '..
 import {
   SYNCABLE_SETTING_STORAGE_KEYS,
   collectSyncableSettings,
+  getEffectivePortForwardingRulesForSync,
   hasMeaningfulCloudSyncData,
 } from '../syncPayload';
 import { readInterruptedVaultApply } from '../localVaultBackups';
 import {
-  STORAGE_KEY_PORT_FORWARDING,
   STORAGE_KEY_VAULT_RESTORE_IN_PROGRESS_UNTIL,
 } from '../../infrastructure/config/storageKeys';
 import {
@@ -156,21 +156,6 @@ export const useAutoSync = (config: AutoSyncConfig) => {
   }, []);
 
   const getSyncSnapshot = useCallback(() => {
-    let effectivePFRules = config.portForwardingRules;
-    if (!effectivePFRules || effectivePFRules.length === 0) {
-      const stored = localStorageAdapter.read<SyncPayload['portForwardingRules']>(
-        STORAGE_KEY_PORT_FORWARDING,
-      );
-      if (stored && Array.isArray(stored) && stored.length > 0) {
-        effectivePFRules = stored.map((rule) => ({
-          ...rule,
-          status: 'inactive' as const,
-          error: undefined,
-          lastUsedAt: undefined,
-        }));
-      }
-    }
-
     return {
       hosts: config.hosts,
       keys: config.keys,
@@ -179,7 +164,7 @@ export const useAutoSync = (config: AutoSyncConfig) => {
       snippets: config.snippets,
       customGroups: config.customGroups,
       snippetPackages: config.snippetPackages,
-      portForwardingRules: effectivePFRules,
+      portForwardingRules: getEffectivePortForwardingRulesForSync(config.portForwardingRules),
       groupConfigs: config.groupConfigs,
     };
   }, [

application/state/useGlobalHotkeys.ts

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

application/state/usePortForwardingAutoStart.ts

@@ -24,6 +24,7 @@ export interface UsePortForwardingAutoStartOptions {
   identities: Identity[];
   proxyProfiles: ProxyProfile[];
   groupConfigs: GroupConfig[];
+  terminalSettings?: { keepaliveInterval: number; keepaliveCountMax: number };
 }
 
 const AUTO_START_PROXY_NOT_READY_ERROR = "Proxy or jump host configuration is not ready";
@@ -103,6 +104,7 @@ export const usePortForwardingAutoStart = ({
   identities,
   proxyProfiles,
   groupConfigs,
+  terminalSettings,
 }: UsePortForwardingAutoStartOptions): void => {
   const autoStartExecutedRef = useRef(false);
   const hostsRef = useRef<Host[]>(hosts);
@@ -110,6 +112,8 @@ export const usePortForwardingAutoStart = ({
   const identitiesRef = useRef<Identity[]>(identities);
   const proxyProfilesRef = useRef<ProxyProfile[]>(proxyProfiles);
   const groupConfigsRef = useRef<GroupConfig[]>(groupConfigs);
+  const terminalSettingsRef = useRef(terminalSettings);
+  terminalSettingsRef.current = terminalSettings;
 
   const isHostAuthReady = useCallback((host: Host, seen = new Set<string>()): boolean => {
     if (!host || seen.has(host.id)) return true;
@@ -238,7 +242,7 @@ export const usePortForwardingAutoStart = ({
       }
 
       const host = resolveEffectiveHost(rawHost);
-      return startPortForward(rule, host, resolveEffectiveHosts(hostsRef.current), keysRef.current, identitiesRef.current, onStatusChange, true);
+      return startPortForward(rule, host, resolveEffectiveHosts(hostsRef.current), keysRef.current, identitiesRef.current, onStatusChange, true, terminalSettingsRef.current);
     };
 
     setReconnectCallback(handleReconnect);
@@ -304,6 +308,10 @@ export const usePortForwardingAutoStart = ({
             updateStoredRuleStatus(rule.id, status, error);
           },
           true, // Enable reconnect for auto-start rules
+          // Read via ref so adjusting global keepalive after launch doesn't
+          // re-trigger the auto-start effect (its dep array is intentionally
+          // stable to fire once on vault init).
+          terminalSettingsRef.current,
         );
       }
     };

application/state/usePortForwardingState.ts

@@ -68,6 +68,7 @@ export interface UsePortForwardingStateResult {
     identities: Identity[],
     onStatusChange?: (status: PortForwardingRule["status"], error?: string) => void,
     enableReconnect?: boolean,
+    terminalSettings?: { keepaliveInterval: number; keepaliveCountMax: number },
   ) => Promise<{ success: boolean; error?: string }>;
   stopTunnel: (
     ruleId: string,
@@ -387,11 +388,12 @@ export const usePortForwardingState = (): UsePortForwardingStateResult => {
         error?: string,
       ) => void,
       enableReconnect = false,
+      terminalSettings?: { keepaliveInterval: number; keepaliveCountMax: number },
     ) => {
       return startPortForward(rule, host, hosts, keys, identities, (status, error) => {
         setRuleStatus(rule.id, status, error);
         onStatusChange?.(status, error ?? undefined);
-      }, enableReconnect);
+      }, enableReconnect, terminalSettings);
     },
     [setRuleStatus],
   );

application/state/useSessionState.ts

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

application/state/useSettingsState.ts

@@ -51,7 +51,7 @@ import {
 } from '../../domain/customKeyBindings';
 import { applyCustomAccentToTerminalTheme, getTerminalThemeForUiTheme } from '../../domain/terminalAppearance';
 import { customThemeStore, useCustomThemes } from '../state/customThemeStore';
-import { DEFAULT_FONT_SIZE } from '../../infrastructure/config/fonts';
+import { DEFAULT_FONT_SIZE, isDeprecatedPrimaryFontId } from '../../infrastructure/config/fonts';
 import { DARK_UI_THEMES, LIGHT_UI_THEMES, UiThemeTokens, getUiThemeById } from '../../infrastructure/config/uiThemes';
 import { UI_FONTS, DEFAULT_UI_FONT_ID } from '../../infrastructure/config/uiFonts';
 import { uiFontStore, useUIFontsLoaded } from './uiFontStore';
@@ -71,6 +71,28 @@ const DEFAULT_ACCENT_MODE: 'theme' | 'custom' = 'theme';
 const DEFAULT_CUSTOM_ACCENT = '221.2 83.2% 53.3%';
 const DEFAULT_TERMINAL_THEME = 'netcatty-dark';
 const DEFAULT_FONT_FAMILY = 'menlo';
+
+/**
+ * Migrate any terminal font id arriving from storage / IPC / sync to a
+ * safe value. If `raw` is a deprecated proportional id (pingfang-sc,
+ * microsoft-yahei, comic-sans-ms), persist the rewrite back to
+ * localStorage so subsequent ingest paths and cloud-sync uploads stop
+ * carrying it. Used by every place that reads STORAGE_KEY_TERM_FONT_FAMILY
+ * — initial useState init, rehydrateAllFromStorage, IPC notifySettings
+ * change listener, and cross-window storage event listener — so a
+ * single point of truth keeps deprecated ids from re-entering state.
+ *
+ * Returns null when there's nothing to apply (raw is empty); callers
+ * fall back to DEFAULT_FONT_FAMILY in that case.
+ */
+function migrateIncomingTerminalFontId(raw: string | null | undefined): string | null {
+  if (!raw) return null;
+  if (isDeprecatedPrimaryFontId(raw)) {
+    localStorageAdapter.writeString(STORAGE_KEY_TERM_FONT_FAMILY, DEFAULT_FONT_FAMILY);
+    return DEFAULT_FONT_FAMILY;
+  }
+  return raw;
+}
 // Auto-detect default hotkey scheme based on platform
 const DEFAULT_HOTKEY_SCHEME: HotkeyScheme =
   typeof navigator !== 'undefined' && /Mac|iPhone|iPad|iPod/i.test(navigator.platform)
@@ -232,7 +254,10 @@ export const useSettingsState = () => {
     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 [terminalFontFamilyId, setTerminalFontFamilyId] = useState<string>(() => {
+    const stored = localStorageAdapter.readString(STORAGE_KEY_TERM_FONT_FAMILY);
+    return migrateIncomingTerminalFontId(stored) ?? DEFAULT_FONT_FAMILY;
+  });
   const [terminalFontSize, setTerminalFontSize] = useState<number>(() => localStorageAdapter.readNumber(STORAGE_KEY_TERM_FONT_SIZE) || DEFAULT_FONT_SIZE);
   const [uiLanguage, setUiLanguage] = useState<UILanguage>(() => {
     const stored = readStoredString(STORAGE_KEY_UI_LANGUAGE);
@@ -512,7 +537,8 @@ export const useSettingsState = () => {
     const storedTermTheme = readStoredString(STORAGE_KEY_TERM_THEME);
     if (storedTermTheme) setTerminalThemeId(storedTermTheme);
     const storedTermFont = readStoredString(STORAGE_KEY_TERM_FONT_FAMILY);
-    if (storedTermFont) setTerminalFontFamilyId(storedTermFont);
+    const migratedTermFont = migrateIncomingTerminalFontId(storedTermFont);
+    if (migratedTermFont) setTerminalFontFamilyId(migratedTermFont);
     const storedTermSize = localStorageAdapter.readNumber(STORAGE_KEY_TERM_FONT_SIZE);
     if (storedTermSize != null) setTerminalFontSize(storedTermSize);
     const storedTermSettings = readStoredString(STORAGE_KEY_TERM_SETTINGS);
@@ -648,7 +674,8 @@ export const useSettingsState = () => {
         setFollowAppTerminalThemeState((prev) => (prev === next ? prev : next));
       }
       if (key === STORAGE_KEY_TERM_FONT_FAMILY && typeof value === 'string') {
-        setTerminalFontFamilyId(value);
+        const migrated = migrateIncomingTerminalFontId(value);
+        if (migrated) setTerminalFontFamilyId(migrated);
       }
       if (key === STORAGE_KEY_TERM_FONT_SIZE && typeof value === 'number') {
         setTerminalFontSize(value);
@@ -844,8 +871,9 @@ export const useSettingsState = () => {
       }
       // Sync terminal font family from other windows
       if (e.key === STORAGE_KEY_TERM_FONT_FAMILY && e.newValue) {
-        if (e.newValue !== s.terminalFontFamilyId) {
-          setTerminalFontFamilyId(e.newValue);
+        const migrated = migrateIncomingTerminalFontId(e.newValue);
+        if (migrated && migrated !== s.terminalFontFamilyId) {
+          setTerminalFontFamilyId(migrated);
         }
       }
       // Sync terminal font size from other windows

application/state/useSftpBackend.ts

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

application/state/useSftpState.ts

@@ -174,6 +174,7 @@ export const useSftpState = (
     hosts,
     keys,
     identities,
+    terminalSettings: options?.terminalSettings,
     leftTabsRef,
     rightTabsRef,
     leftTabs,

application/state/useVaultState.ts

@@ -1,5 +1,7 @@
 import { useCallback, useEffect, useRef, useState } from "react";
 import { normalizeDistroId, sanitizeHost } from "../../domain/host";
+import { sanitizeGroupConfig } from "../../domain/groupConfig";
+import { normalizeKnownHosts } from "../../domain/knownHosts";
 import {
   ConnectionLog,
   GroupConfig,
@@ -240,9 +242,15 @@ export const useVaultState = () => {
   }, []);
 
   const updateGroupConfigs = useCallback((data: GroupConfig[]) => {
-    setGroupConfigs(data);
+    // Sanitize on the write path too — applySyncPayload / importVaultData
+    // route legacy payloads through here, and without this step a saved
+    // pingfang-sc / comic-sans-ms override from an older client would
+    // sit in memory and re-persist with `fontFamilyOverride: true` until
+    // the next reload. Mirrors updateHosts → sanitizeHost.
+    const cleaned = data.map(sanitizeGroupConfig);
+    setGroupConfigs(cleaned);
     const ver = ++groupConfigsWriteVersion.current;
-    return encryptGroupConfigs(data).then((enc) => {
+    return encryptGroupConfigs(cleaned).then((enc) => {
       if (ver === groupConfigsWriteVersion.current)
         localStorageAdapter.write(STORAGE_KEY_GROUP_CONFIGS, enc);
     });
@@ -498,11 +506,22 @@ export const useVaultState = () => {
         if (savedGroups) setCustomGroups(savedGroups);
         if (savedSnippetPackages) setSnippetPackages(savedSnippetPackages);
 
-        // Load known hosts
+        // Load known hosts. Records imported from `~/.ssh/known_hosts` and
+        // records saved by older builds may be missing the `fingerprint` /
+        // `keyType` fields the verifier compares against; backfill them now
+        // so the next SSH connect can match without falling into the brittle
+        // re-derivation path that caused the repeated "fingerprint changed"
+        // warnings in #972.
         const savedKnownHosts = localStorageAdapter.read<KnownHost[]>(
           STORAGE_KEY_KNOWN_HOSTS,
         );
-        if (savedKnownHosts) setKnownHosts(savedKnownHosts);
+        if (savedKnownHosts) {
+          const normalized = normalizeKnownHosts(savedKnownHosts);
+          setKnownHosts(normalized);
+          if (normalized !== savedKnownHosts) {
+            localStorageAdapter.write(STORAGE_KEY_KNOWN_HOSTS, normalized);
+          }
+        }
 
         // Load shell history
         const savedShellHistory = localStorageAdapter.read<ShellHistoryEntry[]>(
@@ -528,8 +547,9 @@ export const useVaultState = () => {
           const gcVer = ++groupConfigsWriteVersion.current;
           const decryptedGC = await decryptGroupConfigs(savedGroupConfigs);
           if (gcVer === groupConfigsWriteVersion.current) {
-            setGroupConfigs(decryptedGC);
-            encryptGroupConfigs(decryptedGC).then((enc) => {
+            const sanitizedGC = decryptedGC.map(sanitizeGroupConfig);
+            setGroupConfigs(sanitizedGC);
+            encryptGroupConfigs(sanitizedGC).then((enc) => {
               if (gcVer === groupConfigsWriteVersion.current)
                 localStorageAdapter.write(STORAGE_KEY_GROUP_CONFIGS, enc);
             });
@@ -630,7 +650,7 @@ export const useVaultState = () => {
 
       if (key === STORAGE_KEY_KNOWN_HOSTS) {
         const next = safeParse<KnownHost[]>(event.newValue) ?? [];
-        setKnownHosts(next);
+        setKnownHosts(normalizeKnownHosts(next));
         return;
       }
 
@@ -659,7 +679,7 @@ export const useVaultState = () => {
         const writeAtStart = groupConfigsWriteVersion.current;
         decryptGroupConfigs(next).then((dec) => {
           if (seq === groupConfigsReadSeq.current && writeAtStart === groupConfigsWriteVersion.current)
-            setGroupConfigs(dec);
+            setGroupConfigs(dec.map(sanitizeGroupConfig));
         });
         return;
       }

application/syncPayload.test.ts

@@ -561,6 +561,75 @@ test("applySyncPayload waits for async vault imports", async () => {
   assert.equal(finished, true);
 });
 
+test("buildSyncPayload includes fallbackFont when present in TERM_SETTINGS", () => {
+  localStorage.setItem(
+    storageKeys.STORAGE_KEY_TERM_SETTINGS,
+    JSON.stringify({ scrollback: 5000, fallbackFont: "PingFang SC", fontLigatures: true }),
+  );
+
+  const payload = buildSyncPayload(vault());
+  const termSettings = (payload.settings?.terminalSettings ?? {}) as Record<string, unknown>;
+  assert.equal(termSettings.fallbackFont, "PingFang SC");
+});
+
+test("buildSyncPayload omits fallbackFont when TERM_SETTINGS does not set it", () => {
+  localStorage.setItem(
+    storageKeys.STORAGE_KEY_TERM_SETTINGS,
+    JSON.stringify({ scrollback: 5000, fontLigatures: true }),
+  );
+
+  const payload = buildSyncPayload(vault());
+  const termSettings = (payload.settings?.terminalSettings ?? {}) as Record<string, unknown>;
+  assert.equal("fallbackFont" in termSettings, false);
+});
+
+test("applySyncPayload writes incoming fallbackFont into local TERM_SETTINGS", async () => {
+  const payload: SyncPayload = {
+    hosts: [],
+    keys: [],
+    identities: [],
+    snippets: [],
+    customGroups: [],
+    syncedAt: 1,
+    settings: { terminalSettings: { fallbackFont: "Sarasa Mono SC" } },
+  };
+
+  await applySyncPayload(payload, {
+    importVaultData: () => {},
+  });
+
+  const raw = localStorage.getItem(storageKeys.STORAGE_KEY_TERM_SETTINGS);
+  assert.ok(raw, "TERM_SETTINGS should be written");
+  const parsed = JSON.parse(raw!);
+  assert.equal(parsed.fallbackFont, "Sarasa Mono SC");
+});
+
+test("applySyncPayload from legacy client (no fallbackFont) preserves local value", async () => {
+  localStorage.setItem(
+    storageKeys.STORAGE_KEY_TERM_SETTINGS,
+    JSON.stringify({ scrollback: 5000, fallbackFont: "Microsoft YaHei UI" }),
+  );
+
+  const payload: SyncPayload = {
+    hosts: [],
+    keys: [],
+    identities: [],
+    snippets: [],
+    customGroups: [],
+    syncedAt: 1,
+    settings: { terminalSettings: { scrollback: 9999 } },
+  };
+
+  await applySyncPayload(payload, {
+    importVaultData: () => {},
+  });
+
+  const raw = localStorage.getItem(storageKeys.STORAGE_KEY_TERM_SETTINGS);
+  const parsed = JSON.parse(raw!);
+  assert.equal(parsed.fallbackFont, "Microsoft YaHei UI", "legacy payload must not wipe local fallbackFont");
+  assert.equal(parsed.scrollback, 9999);
+});
+
 test("applyLocalVaultPayload restores known hosts from local backups", async () => {
   let imported: Record<string, unknown> | null = null;
   const payload: SyncPayload = {

application/syncPayload.ts

@@ -18,7 +18,12 @@ import type {
   Snippet,
   SSHKey,
 } from '../domain/models';
-import type { SyncPayload } from '../domain/sync';
+import {
+  CLOUD_SYNC_PAYLOAD_ENTITY_KEYS,
+  SYNC_PAYLOAD_ENTITY_KEYS,
+  hasSyncPayloadEntityData,
+  type SyncPayload,
+} from '../domain/sync';
 import {
   nextCustomKeyBindingsSyncVersion,
   parseCustomKeyBindingsStorageRecord,
@@ -26,7 +31,7 @@ import {
 } from '../domain/customKeyBindings';
 import { isEncryptedCredentialPlaceholder } from '../domain/credentials';
 import { localStorageAdapter } from '../infrastructure/persistence/localStorageAdapter';
-import { rehydrateGlobalBookmarks } from '../components/sftp/hooks/useGlobalSftpBookmarks';
+import { rehydrateGlobalSftpBookmarks } from './state/sftp/globalSftpBookmarks';
 import {
   STORAGE_KEY_THEME,
   STORAGE_KEY_UI_THEME_LIGHT,
@@ -67,6 +72,7 @@ import {
   STORAGE_KEY_AI_MAX_ITERATIONS,
   STORAGE_KEY_AI_AGENT_MODEL_MAP,
   STORAGE_KEY_AI_WEB_SEARCH,
+  STORAGE_KEY_PORT_FORWARDING,
 } from '../infrastructure/config/storageKeys';
 
 // ---------------------------------------------------------------------------
@@ -94,19 +100,7 @@ export interface SyncableVaultData {
  * protecting or syncing.
  */
 export function hasMeaningfulSyncData(payload: SyncPayload): boolean {
-  const hasEntities =
-    (payload.hosts?.length ?? 0) > 0 ||
-    (payload.keys?.length ?? 0) > 0 ||
-    (payload.snippets?.length ?? 0) > 0 ||
-    (payload.identities?.length ?? 0) > 0 ||
-    (payload.proxyProfiles?.length ?? 0) > 0 ||
-    (payload.customGroups?.length ?? 0) > 0 ||
-    (payload.snippetPackages?.length ?? 0) > 0 ||
-    (payload.portForwardingRules?.length ?? 0) > 0 ||
-    (payload.knownHosts?.length ?? 0) > 0 ||
-    (payload.groupConfigs?.length ?? 0) > 0;
-
-  if (hasEntities) return true;
+  if (hasSyncPayloadEntityData(payload, SYNC_PAYLOAD_ENTITY_KEYS)) return true;
 
   return Boolean(
     payload.settings && Object.values(payload.settings).some((value) => value !== undefined),
@@ -118,24 +112,39 @@ export function hasMeaningfulSyncData(payload: SyncPayload): boolean {
  * Local-only trust records are intentionally ignored.
  */
 export function hasMeaningfulCloudSyncData(payload: SyncPayload): boolean {
-  const hasEntities =
-    (payload.hosts?.length ?? 0) > 0 ||
-    (payload.keys?.length ?? 0) > 0 ||
-    (payload.snippets?.length ?? 0) > 0 ||
-    (payload.identities?.length ?? 0) > 0 ||
-    (payload.proxyProfiles?.length ?? 0) > 0 ||
-    (payload.customGroups?.length ?? 0) > 0 ||
-    (payload.snippetPackages?.length ?? 0) > 0 ||
-    (payload.portForwardingRules?.length ?? 0) > 0 ||
-    (payload.groupConfigs?.length ?? 0) > 0;
-
-  if (hasEntities) return true;
+  if (hasSyncPayloadEntityData(payload, CLOUD_SYNC_PAYLOAD_ENTITY_KEYS)) return true;
 
   return Boolean(
     payload.settings && Object.values(payload.settings).some((value) => value !== undefined),
   );
 }
 
+export function sanitizePortForwardingRulesForSync(
+  rules: PortForwardingRule[] | undefined,
+): PortForwardingRule[] | undefined {
+  if (!rules) return rules;
+  return rules.map((rule) => ({
+    ...rule,
+    status: 'inactive' as const,
+    error: undefined,
+    lastUsedAt: undefined,
+  }));
+}
+
+export function getEffectivePortForwardingRulesForSync(
+  rules: PortForwardingRule[] | undefined,
+): PortForwardingRule[] | undefined {
+  let effectiveRules = rules;
+  if (!effectiveRules || effectiveRules.length === 0) {
+    const stored = localStorageAdapter.read<PortForwardingRule[]>(STORAGE_KEY_PORT_FORWARDING);
+    if (Array.isArray(stored) && stored.length > 0) {
+      effectiveRules = stored;
+    }
+  }
+
+  return sanitizePortForwardingRulesForSync(effectiveRules);
+}
+
 /** Callbacks used by `applySyncPayload` to import data into local state. */
 interface SyncPayloadImporters {
   /** Import vault data. Cloud sync excludes local-only known hosts by default. */
@@ -159,8 +168,8 @@ const SYNCABLE_TERMINAL_KEYS = [
   'smoothScrolling',
   'rightClickBehavior', 'copyOnSelect', 'middleClickPaste', 'wordSeparators',
   'linkModifier', 'keywordHighlightEnabled', 'keywordHighlightRules',
-  'keepaliveInterval', 'disableBracketedPaste', 'clearWipesScrollback',
-  'preserveSelectionOnInput', 'osc52Clipboard', 'showServerStats',
+  'keepaliveInterval', 'keepaliveCountMax', 'disableBracketedPaste', 'clearWipesScrollback',
+  'preserveSelectionOnInput', 'forcePromptNewLine', 'osc52Clipboard', 'showServerStats',
   'serverStatsRefreshInterval', 'rendererType',
   'autocompleteEnabled', 'autocompleteGhostText', 'autocompletePopupMenu',
   'autocompleteDebounceMs', 'autocompleteMinChars', 'autocompleteMaxSuggestions',
@@ -550,7 +559,7 @@ export function buildSyncPayload(
     customGroups: vault.customGroups,
     snippetPackages: vault.snippetPackages,
     groupConfigs: vault.groupConfigs,
-    portForwardingRules,
+    portForwardingRules: sanitizePortForwardingRulesForSync(portForwardingRules),
     settings: collectSyncableSettings(),
     syncedAt: Date.now(),
   };
@@ -611,7 +620,7 @@ function applyPayload(
     if (payload.settings) {
       applySyncableSettings(payload.settings);
       // Rehydrate in-memory bookmark snapshot after localStorage was updated
-      if (payload.settings.sftpGlobalBookmarks != null) rehydrateGlobalBookmarks();
+      if (payload.settings.sftpGlobalBookmarks != null) rehydrateGlobalSftpBookmarks();
       importers.onSettingsApplied?.();
     }
   });

components/AIChatSidePanel.tsx

@@ -38,6 +38,7 @@ import { matchesManagedAgentConfig } from '../infrastructure/ai/managedAgents';
 import { useAgentDiscovery } from '../application/state/useAgentDiscovery';
 import { Button } from './ui/button';
 import { ScrollArea } from './ui/scroll-area';
+import { Tooltip, TooltipContent, TooltipTrigger } from './ui/tooltip';
 import AgentSelector from './ai/AgentSelector';
 import ChatInput from './ai/ChatInput';
 import ChatMessageList from './ai/ChatMessageList';
@@ -636,6 +637,7 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
       undefined,
       undefined,
       `models_${currentAgentId}`,
+      currentAgentConfig.env,
     ).then((result) => {
       if (cancelled || !result?.ok || !Array.isArray(result.models)) return;
       // If the probe came back empty, drop any stale cached catalog for this
@@ -1035,24 +1037,32 @@ const AIChatSidePanelInner: React.FC<AIChatSidePanelProps> = ({
             session={activeSession}
             onExport={handleExport}
           />
-          <Button
-            variant="ghost"
-            size="icon"
-            className="h-7 w-7 rounded-md text-muted-foreground/62 hover:bg-white/[0.05] hover:text-foreground"
-            onClick={() => setShowHistory(!showHistory)}
-            title="Session history"
-          >
-            <History size={14} />
-          </Button>
-          <Button
-            variant="ghost"
-            size="icon"
-            className="h-7 w-7 rounded-md text-primary/82 hover:bg-primary/[0.10] hover:text-primary"
-            onClick={handleNewChat}
-            title="New chat"
-          >
-            <Plus size={15} />
-          </Button>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <Button
+                variant="ghost"
+                size="icon"
+                className="h-7 w-7 rounded-md text-muted-foreground/62 hover:bg-white/[0.05] hover:text-foreground"
+                onClick={() => setShowHistory(!showHistory)}
+              >
+                <History size={14} />
+              </Button>
+            </TooltipTrigger>
+            <TooltipContent>{t('ai.chat.sessionHistory')}</TooltipContent>
+          </Tooltip>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <Button
+                variant="ghost"
+                size="icon"
+                className="h-7 w-7 rounded-md text-primary/82 hover:bg-primary/[0.10] hover:text-primary"
+                onClick={handleNewChat}
+              >
+                <Plus size={15} />
+              </Button>
+            </TooltipTrigger>
+            <TooltipContent>{t('ai.chat.newChat')}</TooltipContent>
+          </Tooltip>
         </div>
       </div>
 
@@ -1199,13 +1209,17 @@ const SessionHistoryDrawer: React.FC<SessionHistoryDrawerProps> = ({
                     <span className={SESSION_HISTORY_ROW_CLASSNAMES.time}>
                       {timeStr}
                     </span>
-                    <button
-                      onClick={(e) => onDelete(e, session.id)}
-                      className={SESSION_HISTORY_ROW_CLASSNAMES.deleteButton}
-                      title="Delete"
-                    >
-                      <Trash2 size={12} />
-                    </button>
+                    <Tooltip>
+                      <TooltipTrigger asChild>
+                        <button
+                          onClick={(e) => onDelete(e, session.id)}
+                          className={SESSION_HISTORY_ROW_CLASSNAMES.deleteButton}
+                        >
+                          <Trash2 size={12} />
+                        </button>
+                      </TooltipTrigger>
+                      <TooltipContent>{t('common.delete')}</TooltipContent>
+                    </Tooltip>
                   </div>
                 </div>
               );

components/CloudSyncSettings.tsx

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

components/ConnectionLogsManager.tsx

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

components/FileOpenerDialog.tsx

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

components/GroupDetailsPanel.tsx

@@ -51,9 +51,11 @@ import { Combobox } from "./ui/combobox";
 import { Dropdown, DropdownContent, DropdownTrigger } from "./ui/dropdown";
 import { Input } from "./ui/input";
 import { Popover, PopoverContent, PopoverTrigger } from "./ui/popover";
+import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "./ui/select";
 import { TerminalFontSelect } from "./settings/TerminalFontSelect";
 import { useAvailableFonts } from "../application/state/fontStore";
 import { toast } from "./ui/toast";
+import { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
 
 type SubPanel = "none" | "proxy" | "chain" | "env-vars" | "theme-select";
 
@@ -814,29 +816,33 @@ const GroupDetailsPanel: React.FC<GroupDetailsPanelProps> = ({
                       }
                     }}
                   />
-                  <Button
-                    variant="secondary"
-                    size="icon"
-                    className="h-8 w-8 shrink-0"
-                    title={t("hostDetails.credential.browseKeyFile")}
-                    onClick={async () => {
-                      const bridge = (window as unknown as { netcatty?: NetcattyBridge }).netcatty;
-                      if (!bridge?.selectFile) return;
-                      const filePath = await bridge.selectFile(
-                        "Select SSH Private Key",
-                        undefined,
-                        [{ name: "All Files", extensions: ["*"] }]
-                      );
-                      if (filePath) {
-                        const paths = [...(form.identityFilePaths || []), filePath];
-                        update("identityFilePaths", paths);
-                        update("identityFileId", undefined);
-                        update("authMethod", "key");
-                      }
-                    }}
-                  >
-                    <FolderOpen size={14} />
-                  </Button>
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <Button
+                        variant="secondary"
+                        size="icon"
+                        className="h-8 w-8 shrink-0"
+                        onClick={async () => {
+                          const bridge = (window as unknown as { netcatty?: NetcattyBridge }).netcatty;
+                          if (!bridge?.selectFile) return;
+                          const filePath = await bridge.selectFile(
+                            "Select SSH Private Key",
+                            undefined,
+                            [{ name: "All Files", extensions: ["*"] }]
+                          );
+                          if (filePath) {
+                            const paths = [...(form.identityFilePaths || []), filePath];
+                            update("identityFilePaths", paths);
+                            update("identityFileId", undefined);
+                            update("authMethod", "key");
+                          }
+                        }}
+                      >
+                        <FolderOpen size={14} />
+                      </Button>
+                    </TooltipTrigger>
+                    <TooltipContent>{t("hostDetails.credential.browseKeyFile")}</TooltipContent>
+                  </Tooltip>
                   <Button
                     variant="ghost"
                     size="icon"
@@ -871,16 +877,20 @@ const GroupDetailsPanel: React.FC<GroupDetailsPanelProps> = ({
             />
 
             {/* Backspace behavior */}
-            <div className="flex items-center justify-between">
+            <div className="flex items-center justify-between gap-2">
               <p className="text-xs text-muted-foreground">{t("hostDetails.backspaceBehavior")}</p>
-              <select
-                className="h-8 rounded-md border border-input bg-background px-2 text-xs"
-                value={form.backspaceBehavior ?? ""}
-                onChange={(e) => update("backspaceBehavior", e.target.value || undefined)}
+              <Select
+                value={form.backspaceBehavior ?? "default"}
+                onValueChange={(v) => update("backspaceBehavior", v === "default" ? undefined : v)}
               >
-                <option value="">{t("hostDetails.backspaceBehavior.default")}</option>
-                <option value="ctrl-h">^H (0x08)</option>
-              </select>
+                <SelectTrigger className="h-8 w-auto text-xs">
+                  <SelectValue />
+                </SelectTrigger>
+                <SelectContent>
+                  <SelectItem value="default">{t("hostDetails.backspaceBehavior.default")}</SelectItem>
+                  <SelectItem value="ctrl-h">^H (0x08)</SelectItem>
+                </SelectContent>
+              </Select>
             </div>
 
             {/* Proxy */}
@@ -895,14 +905,19 @@ const GroupDetailsPanel: React.FC<GroupDetailsPanelProps> = ({
               </div>
               <div className="flex min-w-0 items-center gap-2">
                 {(form.proxyConfig?.host || form.proxyProfileId) && (
-                  <div title={proxySummaryLabel} className="min-w-0">
-                    <Badge
-                      variant="secondary"
-                      className="max-w-[160px] truncate text-xs"
-                    >
-                      {proxySummaryLabel}
-                    </Badge>
-                  </div>
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <div className="min-w-0 cursor-default">
+                        <Badge
+                          variant="secondary"
+                          className="max-w-[160px] truncate text-xs"
+                        >
+                          {proxySummaryLabel}
+                        </Badge>
+                      </div>
+                    </TooltipTrigger>
+                    <TooltipContent>{proxySummaryLabel}</TooltipContent>
+                  </Tooltip>
                 )}
                 <ChevronRight size={14} className="text-muted-foreground" />
               </div>

components/HostDetailsPanel.proxyProfile.test.tsx

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

components/HostDetailsPanel.tsx

@@ -8,6 +8,7 @@ import {
   FolderPlus,
   Forward,
   Globe,
+  HeartPulse,
   Key,
   KeyRound,
   Link2,
@@ -937,15 +938,19 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                     {selectedIdentity.label}
                   </div>
                 </div>
-                <Button
-                  variant="ghost"
-                  size="icon"
-                  className="h-8 w-8 shrink-0"
-                  onClick={clearIdentity}
-                  title={t("common.clear")}
-                >
-                  <X size={14} />
-                </Button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className="h-8 w-8 shrink-0"
+                      onClick={clearIdentity}
+                    >
+                      <X size={14} />
+                    </Button>
+                  </TooltipTrigger>
+                  <TooltipContent>{t("common.clear")}</TooltipContent>
+                </Tooltip>
               </div>
             ) : form.identityId ? (
               <div className="flex items-center gap-2 h-10 px-3 rounded-md border border-border/70 bg-secondary/60">
@@ -955,15 +960,19 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                     {t("hostDetails.identity.missing")}
                   </div>
                 </div>
-                <Button
-                  variant="ghost"
-                  size="icon"
-                  className="h-8 w-8 shrink-0"
-                  onClick={clearIdentity}
-                  title={t("common.clear")}
-                >
-                  <X size={14} />
-                </Button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className="h-8 w-8 shrink-0"
+                      onClick={clearIdentity}
+                    >
+                      <X size={14} />
+                    </Button>
+                  </TooltipTrigger>
+                  <TooltipContent>{t("common.clear")}</TooltipContent>
+                </Tooltip>
               </div>
             ) : (
               (() => {
@@ -1018,29 +1027,33 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                           }}
                           className="h-10 pr-9"
                         />
-                        <button
-                          type="button"
-                          className="absolute right-2 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground transition-colors"
-                          onClick={() => {
-                            setIdentitySuggestionsOpen((prev) => {
-                              if (prev) return false;
-                              const q = (form.username || "")
-                                .toLowerCase()
-                                .trim();
-                              const matches = q
-                                ? identities.filter(
-                                  (i) =>
-                                    i.label.toLowerCase().includes(q) ||
-                                    i.username.toLowerCase().includes(q),
-                                )
-                                : identities;
-                              return matches.length > 0;
-                            });
-                          }}
-                          title={t("hostDetails.identity.suggestions")}
-                        >
-                          <ChevronDown size={16} />
-                        </button>
+                        <Tooltip>
+                          <TooltipTrigger asChild>
+                            <button
+                              type="button"
+                              className="absolute right-2 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground transition-colors"
+                              onClick={() => {
+                                setIdentitySuggestionsOpen((prev) => {
+                                  if (prev) return false;
+                                  const q = (form.username || "")
+                                    .toLowerCase()
+                                    .trim();
+                                  const matches = q
+                                    ? identities.filter(
+                                      (i) =>
+                                        i.label.toLowerCase().includes(q) ||
+                                        i.username.toLowerCase().includes(q),
+                                    )
+                                    : identities;
+                                  return matches.length > 0;
+                                });
+                              }}
+                            >
+                              <ChevronDown size={16} />
+                            </button>
+                          </TooltipTrigger>
+                          <TooltipContent>{t("hostDetails.identity.suggestions")}</TooltipContent>
+                        </Tooltip>
                       </div>
                     </PopoverTrigger>
                     <PopoverContent
@@ -1122,14 +1135,18 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                   onChange={(e) => update("password", e.target.value)}
                   className="h-10 pr-10"
                 />
-                <button
-                  type="button"
-                  onClick={() => setShowPassword(!showPassword)}
-                  className="absolute right-2 top-1/2 -translate-y-1/2 p-1 text-muted-foreground hover:text-foreground transition-colors"
-                  title={showPassword ? t("hostDetails.password.hide") : t("hostDetails.password.show")}
-                >
-                  {showPassword ? <EyeOff size={16} /> : <Eye size={16} />}
-                </button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <button
+                      type="button"
+                      onClick={() => setShowPassword(!showPassword)}
+                      className="absolute right-2 top-1/2 -translate-y-1/2 p-1 text-muted-foreground hover:text-foreground transition-colors"
+                    >
+                      {showPassword ? <EyeOff size={16} /> : <Eye size={16} />}
+                    </button>
+                  </TooltipTrigger>
+                  <TooltipContent>{showPassword ? t("hostDetails.password.hide") : t("hostDetails.password.show")}</TooltipContent>
+                </Tooltip>
               </div>
             )}
 
@@ -1152,9 +1169,14 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                 {form.identityFilePaths.map((keyPath, idx) => (
                   <div key={idx} className="flex items-center gap-2 p-2 rounded-md bg-secondary/50 border border-border/60 overflow-hidden">
                     <FileKey size={14} className="text-primary shrink-0" />
-                    <span className="text-xs w-0 flex-1 truncate font-mono" title={keyPath}>
-                      {keyPath}
-                    </span>
+                    <Tooltip>
+                      <TooltipTrigger asChild>
+                        <span className="text-xs w-0 flex-1 truncate font-mono cursor-default">
+                          {keyPath}
+                        </span>
+                      </TooltipTrigger>
+                      <TooltipContent>{keyPath}</TooltipContent>
+                    </Tooltip>
                     <Button
                       variant="ghost"
                       size="icon"
@@ -1365,26 +1387,30 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
                         }
                       }}
                     />
-                    <Button
-                      variant="secondary"
-                      size="icon"
-                      className="h-8 w-8 shrink-0"
-                      title={t("hostDetails.credential.browseKeyFile")}
-                      onClick={async () => {
-                        const bridge = (window as unknown as { netcatty?: NetcattyBridge }).netcatty;
-                        if (!bridge?.selectFile) return;
-                        const filePath = await bridge.selectFile(
-                          "Select SSH Private Key",
-                          undefined,
-                          [{ name: "All Files", extensions: ["*"] }]
-                        );
-                        if (filePath) {
-                          addLocalKeyFilePath(filePath);
-                        }
-                      }}
-                    >
-                      <FolderOpen size={14} />
-                    </Button>
+                    <Tooltip>
+                      <TooltipTrigger asChild>
+                        <Button
+                          variant="secondary"
+                          size="icon"
+                          className="h-8 w-8 shrink-0"
+                          onClick={async () => {
+                            const bridge = (window as unknown as { netcatty?: NetcattyBridge }).netcatty;
+                            if (!bridge?.selectFile) return;
+                            const filePath = await bridge.selectFile(
+                              "Select SSH Private Key",
+                              undefined,
+                              [{ name: "All Files", extensions: ["*"] }]
+                            );
+                            if (filePath) {
+                              addLocalKeyFilePath(filePath);
+                            }
+                          }}
+                        >
+                          <FolderOpen size={14} />
+                        </Button>
+                      </TooltipTrigger>
+                      <TooltipContent>{t("hostDetails.credential.browseKeyFile")}</TooltipContent>
+                    </Tooltip>
                     <Button
                       variant="ghost"
                       size="icon"
@@ -1793,19 +1819,89 @@ const HostDetailsPanel: React.FC<HostDetailsPanelProps> = ({
               </p>
             </div>
           )}
-          <div className="flex items-center justify-between">
+          <div className="flex items-center justify-between gap-2">
             <p className="text-xs text-muted-foreground">{t("hostDetails.backspaceBehavior")}</p>
-            <select
-              className="h-8 rounded-md border border-input bg-background px-2 text-xs"
-              value={form.backspaceBehavior ?? ""}
-              onChange={(e) => update("backspaceBehavior", e.target.value || undefined)}
+            <Select
+              value={form.backspaceBehavior ?? "default"}
+              onValueChange={(v) => update("backspaceBehavior", v === "default" ? undefined : v)}
             >
-              <option value="">{t("hostDetails.backspaceBehavior.default")}</option>
-              <option value="ctrl-h">^H (0x08)</option>
-            </select>
+              <SelectTrigger className="h-8 w-auto text-xs">
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="default">{t("hostDetails.backspaceBehavior.default")}</SelectItem>
+                <SelectItem value="ctrl-h">^H (0x08)</SelectItem>
+              </SelectContent>
+            </Select>
           </div>
         </Card>
 
+        {/* Per-host keepalive override */}
+        <Card className="p-3 space-y-2 bg-card border-border/80">
+          <div className="flex items-center gap-2">
+            <HeartPulse size={14} className="text-muted-foreground" />
+            <p className="text-xs font-semibold">{t("hostDetails.section.keepalive")}</p>
+          </div>
+          <ToggleRow
+            label={t("hostDetails.keepalive.override")}
+            enabled={!!form.keepaliveOverride}
+            onToggle={() => {
+              const next = !form.keepaliveOverride;
+              update("keepaliveOverride", next);
+              // Seed sensible per-host defaults the first time the user
+              // turns the override on so the inputs aren't empty.
+              if (next) {
+                if (form.keepaliveInterval == null) update("keepaliveInterval", 0);
+                if (form.keepaliveCountMax == null) update("keepaliveCountMax", 3);
+              }
+            }}
+          />
+          <p className="text-xs text-muted-foreground break-words">
+            {t("hostDetails.keepalive.desc")}
+          </p>
+          {form.keepaliveOverride && (
+            <div className="space-y-2 pt-1">
+              <div className="flex items-center justify-between gap-2">
+                <p className="text-xs text-muted-foreground">{t("hostDetails.keepalive.interval")}</p>
+                <input
+                  type="number"
+                  min={0}
+                  max={3600}
+                  className="h-8 w-24 rounded-md border border-input bg-background px-2 text-xs"
+                  value={form.keepaliveInterval ?? 0}
+                  onChange={(e) => {
+                    const v = parseInt(e.target.value, 10);
+                    if (!Number.isFinite(v)) return;
+                    if (v < 0 || v > 3600) return;
+                    update("keepaliveInterval", v);
+                  }}
+                />
+              </div>
+              <div className="flex items-center justify-between gap-2">
+                <p className="text-xs text-muted-foreground">{t("hostDetails.keepalive.countMax")}</p>
+                <input
+                  type="number"
+                  min={1}
+                  max={100}
+                  className="h-8 w-24 rounded-md border border-input bg-background px-2 text-xs"
+                  value={form.keepaliveCountMax ?? 3}
+                  onChange={(e) => {
+                    const v = parseInt(e.target.value, 10);
+                    if (!Number.isFinite(v)) return;
+                    if (v < 1 || v > 100) return;
+                    update("keepaliveCountMax", v);
+                  }}
+                />
+              </div>
+              {(form.keepaliveInterval ?? 0) === 0 && (
+                <p className="text-xs text-muted-foreground break-words pl-1">
+                  {t("hostDetails.keepalive.disabledHint")}
+                </p>
+              )}
+            </div>
+          )}
+        </Card>
+
         {/* Proxy via Hosts (Jump Hosts / ProxyJump) */}
         <Card className="p-3 space-y-2 bg-card border-border/80">
           <div className="flex items-center justify-between">

components/KeychainManager.tsx

@@ -54,6 +54,7 @@ import { Input } from "./ui/input";
 import { Label } from "./ui/label";
 import { Textarea } from "./ui/textarea";
 import { toast } from "./ui/toast";
+import { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
 
 // Import utilities and components from keychain module
 import {
@@ -1168,9 +1169,14 @@ echo $3 >> "$FILE"`);
                     </Label>
                     <div className="flex items-center gap-2 p-2 rounded-md bg-secondary/50 border border-border/60">
                       <FileKey size={14} className="text-primary shrink-0" />
-                      <span className="text-xs font-mono truncate" title={draftKey.filePath}>
-                        {draftKey.filePath}
-                      </span>
+                      <Tooltip>
+                        <TooltipTrigger asChild>
+                          <span className="text-xs font-mono truncate cursor-default">
+                            {draftKey.filePath}
+                          </span>
+                        </TooltipTrigger>
+                        <TooltipContent>{draftKey.filePath}</TooltipContent>
+                      </Tooltip>
                     </div>
                   </div>
                 )}

components/KnownHostsManager.tsx

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

components/LogView.tsx

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

components/PortForwardingNew.tsx

@@ -75,6 +75,7 @@ interface PortForwardingProps {
   onNewHost?: () => void;
   onSaveHost?: (host: Host) => void;
   onCreateGroup?: (groupPath: string) => void;
+  terminalSettings?: { keepaliveInterval: number; keepaliveCountMax: number };
 }
 
 const PortForwarding: React.FC<PortForwardingProps> = ({
@@ -88,6 +89,7 @@ const PortForwarding: React.FC<PortForwardingProps> = ({
   onNewHost: _onNewHost,
   onSaveHost,
   onCreateGroup: _onCreateGroup,
+  terminalSettings,
 }) => {
   const { t } = useI18n();
   const {
@@ -169,6 +171,7 @@ const PortForwarding: React.FC<PortForwardingProps> = ({
             }
           },
           rule.autoStart, // Enable reconnect for auto-start rules
+          terminalSettings,
         );
         // Show error from result only if not already shown
         if (!result.success && result.error && !errorShown) {
@@ -186,7 +189,7 @@ const PortForwarding: React.FC<PortForwardingProps> = ({
         });
       }
     },
-    [hosts, identities, keys, resolveEffectiveHost, setRuleStatus, startTunnel, t],
+    [hosts, identities, keys, resolveEffectiveHost, setRuleStatus, startTunnel, t, terminalSettings],
   );
 
   // Stop a port forwarding tunnel

components/QuickSwitcher.tsx

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

components/ScriptsSidePanel.tsx

@@ -249,15 +249,19 @@ const ScriptsSidePanelInner: React.FC<ScriptsSidePanelProps> = ({
             className="h-7 pl-7 text-xs bg-muted/30 border-none"
           />
         </div>
-        <button
-          type="button"
-          onClick={handleAddSnippet}
-          title={t('snippets.action.newSnippet')}
-          aria-label={t('snippets.action.newSnippet')}
-          className="shrink-0 h-7 w-7 flex items-center justify-center rounded-md text-muted-foreground hover:text-foreground hover:bg-muted/60 transition-colors"
-        >
-          <Plus size={14} />
-        </button>
+        <Tooltip>
+          <TooltipTrigger asChild>
+            <button
+              type="button"
+              onClick={handleAddSnippet}
+              aria-label={t('snippets.action.newSnippet')}
+              className="shrink-0 h-7 w-7 flex items-center justify-center rounded-md text-muted-foreground hover:text-foreground hover:bg-muted/60 transition-colors"
+            >
+              <Plus size={14} />
+            </button>
+          </TooltipTrigger>
+          <TooltipContent>{t('snippets.action.newSnippet')}</TooltipContent>
+        </Tooltip>
       </div>
 
       {/* Content */}

components/SerialConnectModal.tsx

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

components/SerialHostDetailsPanel.tsx

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

components/SettingsPage.tsx

@@ -12,6 +12,7 @@ import { useWindowControls } from "../application/state/useWindowControls";
 import { useUpdateCheck } from "../application/state/useUpdateCheck";
 import { useAIState } from "../application/state/useAIState";
 import { I18nProvider, useI18n } from "../application/i18n/I18nProvider";
+import { sanitizePortForwardingRulesForSync } from "../application/syncPayload";
 import SettingsApplicationTab from "./SettingsApplicationTab";
 import SettingsAppearanceTab from "./settings/tabs/SettingsAppearanceTab";
 import SettingsFileAssociationsTab from "./settings/tabs/SettingsFileAssociationsTab";
@@ -20,6 +21,7 @@ import SettingsTerminalTab from "./settings/tabs/SettingsTerminalTab";
 import SettingsSystemTab from "./settings/tabs/SettingsSystemTab";
 const SettingsAITab = React.lazy(() => import("./settings/tabs/SettingsAITab"));
 import { Tabs, TabsList, TabsTrigger } from "./ui/tabs";
+import { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
 
 const isMac = typeof navigator !== "undefined" && /Mac|iPhone|iPad/.test(navigator.platform);
 
@@ -49,6 +51,11 @@ type SettingsState = ReturnType<typeof useSettingsState>;
 
 const SettingsSyncTab = React.lazy(() => import("./settings/tabs/SettingsSyncTab"));
 
+const settingsTabTriggerClassName =
+    "w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors overflow-hidden";
+const settingsTabIconClassName = "shrink-0";
+const settingsTabLabelClassName = "min-w-0 truncate";
+
 const SettingsTerminalTabContainer: React.FC<{ settings: SettingsState }> = ({ settings }) => {
     const availableFonts = useAvailableFonts();
 
@@ -127,13 +134,7 @@ const SettingsSyncTabWithVault: React.FC<{ onSettingsApplied?: () => void }> = (
 
     // Strip transient runtime fields before passing to sync
     const portForwardingRulesForSync = useMemo(
-        () =>
-            portForwardingRules.map((rule) => ({
-                ...rule,
-                status: "inactive" as const,
-                error: undefined,
-                lastUsedAt: undefined,
-            })),
+        () => sanitizePortForwardingRulesForSync(portForwardingRules) ?? [],
         [portForwardingRules],
     );
 
@@ -187,13 +188,17 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                 <div className="flex items-center justify-between px-4 py-2">
                     <h1 className="text-lg font-semibold">{t("settings.title")}</h1>
                     {!isMac && (
-                        <button
-                            onClick={handleClose}
-                            className="app-no-drag w-8 h-8 flex items-center justify-center rounded-md hover:bg-destructive/20 hover:text-destructive transition-colors text-muted-foreground"
-                            title={t("common.close")}
-                        >
-                            <X size={16} />
-                        </button>
+                        <Tooltip>
+                            <TooltipTrigger asChild>
+                                <button
+                                    onClick={handleClose}
+                                    className="app-no-drag w-8 h-8 flex items-center justify-center rounded-md hover:bg-destructive/20 hover:text-destructive transition-colors text-muted-foreground"
+                                >
+                                    <X size={16} />
+                                </button>
+                            </TooltipTrigger>
+                            <TooltipContent>{t("common.close")}</TooltipContent>
+                        </Tooltip>
                     )}
                 </div>
             </div>
@@ -208,51 +213,59 @@ const SettingsPageContent: React.FC<{ settings: SettingsState }> = ({ settings }
                     <TabsList className="flex flex-col h-auto bg-transparent gap-1 p-0 justify-start">
                         <TabsTrigger
                             value="application"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <AppWindow size={14} /> {t("settings.tab.application")}
+                            <AppWindow size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>{t("settings.tab.application")}</span>
                         </TabsTrigger>
                         <TabsTrigger
                             value="appearance"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <Palette size={14} /> {t("settings.tab.appearance")}
+                            <Palette size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>{t("settings.tab.appearance")}</span>
                         </TabsTrigger>
                         <TabsTrigger
                             value="terminal"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <TerminalSquare size={14} /> {t("settings.tab.terminal")}
+                            <TerminalSquare size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>{t("settings.tab.terminal")}</span>
                         </TabsTrigger>
                         <TabsTrigger
                             value="shortcuts"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <Keyboard size={14} /> {t("settings.tab.shortcuts")}
+                            <Keyboard size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>{t("settings.tab.shortcuts")}</span>
                         </TabsTrigger>
                         <TabsTrigger
                             value="file-associations"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <FileType size={14} /> {t("settings.tab.sftpFileAssociations")}
+                            <FileType size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>{t("settings.tab.sftpFileAssociations")}</span>
                         </TabsTrigger>
                         <TabsTrigger
                             value="ai"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <Sparkles size={14} /> AI
+                            <Sparkles size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>AI</span>
                         </TabsTrigger>
                         <TabsTrigger
                             value="sync"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <Cloud size={14} /> {t("settings.tab.syncCloud")}
+                            <Cloud size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>{t("settings.tab.syncCloud")}</span>
                         </TabsTrigger>
                         <TabsTrigger
                             value="system"
-                            className="w-full justify-start gap-2 px-3 py-2 text-sm data-[state=active]:bg-background hover:bg-background/60 rounded-md transition-colors"
+                            className={settingsTabTriggerClassName}
                         >
-                            <HardDrive size={14} /> {t("settings.tab.system")}
+                            <HardDrive size={14} className={settingsTabIconClassName} />
+                            <span className={settingsTabLabelClassName}>{t("settings.tab.system")}</span>
                         </TabsTrigger>
                     </TabsList>
                 </div>

components/SftpSidePanel.tsx

@@ -19,13 +19,14 @@ import { editorTabStore } from "../application/state/editorTabStore";
 import { releaseEditorTabSaveCoordinator } from "../application/state/editorTabSave";
 import { useSftpBackend } from "../application/state/useSftpBackend";
 import { useSftpFileAssociations } from "../application/state/useSftpFileAssociations";
-import { getParentPath } from "../application/state/sftp/utils";
+import { getParentPath, isConcreteTransferTargetPath } from "../application/state/sftp/utils";
 import { buildCacheKey } from "../application/state/sftp/sharedRemoteHostCache";
 import { logger } from "../lib/logger";
 import type { DropEntry } from "../lib/sftpFileUtils";
 import { Host, Identity, SSHKey } from "../types";
 import type { TransferTask } from "../types";
 import { toast } from "./ui/toast";
+import { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
 import { DistroAvatar } from "./DistroAvatar";
 
 import { SftpPaneView } from "./sftp/SftpPaneView";
@@ -71,6 +72,7 @@ interface SftpSidePanelProps {
   setEditorWordWrap: (value: boolean) => void;
   onGetTerminalCwd?: () => Promise<string | null>;
   onRequestTerminalFocus?: () => void;
+  terminalSettings?: { keepaliveInterval: number; keepaliveCountMax: number };
 }
 
 const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
@@ -98,6 +100,7 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
   setEditorWordWrap,
   onGetTerminalCwd,
   onRequestTerminalFocus,
+  terminalSettings,
 }) => {
   const { t } = useI18n();
   const hostWriteSource = writableHosts ?? hosts;
@@ -119,7 +122,8 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
     useCompressedUpload: sftpUseCompressedUpload,
     defaultShowHiddenFiles: sftpShowHiddenFiles,
     autoConnectLocalOnMount: false,
-  }), [fileWatchHandlers, sftpUseCompressedUpload, sftpShowHiddenFiles]);
+    terminalSettings,
+  }), [fileWatchHandlers, sftpUseCompressedUpload, sftpShowHiddenFiles, terminalSettings]);
 
   const sftp = useSftpState(hosts, keys, identities, sftpOptions);
   const {
@@ -130,6 +134,8 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
     mkdirLocal,
     deleteLocalFile,
     listLocalDir,
+    listDrives,
+    openPath,
   } = useSftpBackend();
 
   const sftpRef = useRef(sftp);
@@ -293,6 +299,7 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
     startStreamTransfer,
     getSftpIdForConnection: sftp.getSftpIdForConnection,
     listLocalFiles: listLocalDir,
+    listDrives,
   });
 
   const {
@@ -570,18 +577,35 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
 
   const handleRevealTransferTarget = useCallback(
     async (task: TransferTask) => {
+      if (!isConcreteTransferTargetPath(task)) return;
       const connection = sftpRef.current.leftPane.connection;
+      const revealPath = task.isDirectory ? task.targetPath : getParentPath(task.targetPath);
+
+      if (task.targetConnectionId === "local") {
+        try {
+          const result = await openPath(revealPath);
+          if (result.success) return;
+        } catch {
+          // Show the localized error below.
+        }
+        toast.error(t("sftp.transfers.openTargetFolderError"), "SFTP");
+        return;
+      }
+
       if (!connection || connection.isLocal) return;
 
-      const revealPath = task.isDirectory ? task.targetPath : getParentPath(task.targetPath);
       await sftpRef.current.navigateTo("left", revealPath, { force: true });
     },
-    [],
+    [openPath, t],
   );
 
   const canRevealTransferTarget = useCallback(
     (task: TransferTask) => {
       if (task.status !== "completed") return false;
+      if (!isConcreteTransferTargetPath(task)) return false;
+      if (task.targetConnectionId === "local") {
+        return true;
+      }
       if (task.direction !== "upload" && task.direction !== "remote-to-remote") return false;
 
       const connection = sftp.leftPane.connection;
@@ -602,6 +626,24 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
     [sftp.leftPane.connection],
   );
 
+  const canCopyTransferTargetPath = useCallback(
+    (task: TransferTask) => task.status === "completed" && isConcreteTransferTargetPath(task),
+    [],
+  );
+
+  const handleCopyTransferTargetPath = useCallback(
+    async (task: TransferTask) => {
+      if (!isConcreteTransferTargetPath(task)) return;
+      try {
+        await navigator.clipboard.writeText(task.targetPath);
+        toast.success(t("sftp.transfers.copyTargetPathSuccess"), "SFTP");
+      } catch {
+        toast.error(t("sftp.transfers.copyTargetPathError"), "SFTP");
+      }
+    },
+    [t],
+  );
+
   // When the auto-connect effect defers a switch (active transfers or open
   // editor), the panel still operates on the current connection, not
   // activeHost.  Use the connected host for the header so the label matches
@@ -648,18 +690,22 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
                 size="sm"
                 className="h-5 w-5 rounded-sm shrink-0"
               />
-              <div
-                className="min-w-0 flex-1 max-w-[calc(100%-1.75rem)] text-[11px] leading-5 truncate"
-                title={`${displayHost.label} · ${(displayHost.username || "root")}@${formatHostPort(displayHost.hostname, displayHost.port || 22)}`}
-              >
-                <span className="font-medium">
-                  {displayHost.label}
-                </span>
-                <span className="mx-1 text-muted-foreground">·</span>
-                <span className="font-mono text-muted-foreground">
-                  {(displayHost.username || "root")}@{displayHost.hostname}:{displayHost.port || 22}
-                </span>
-              </div>
+              <Tooltip>
+                <TooltipTrigger asChild>
+                  <div className="min-w-0 flex-1 max-w-[calc(100%-1.75rem)] text-[11px] leading-5 truncate cursor-default">
+                    <span className="font-medium">
+                      {displayHost.label}
+                    </span>
+                    <span className="mx-1 text-muted-foreground">·</span>
+                    <span className="font-mono text-muted-foreground">
+                      {(displayHost.username || "root")}@{displayHost.hostname}:{displayHost.port || 22}
+                    </span>
+                  </div>
+                </TooltipTrigger>
+                <TooltipContent>
+                  {`${displayHost.label} · ${(displayHost.username || "root")}@${formatHostPort(displayHost.hostname, displayHost.port || 22)}`}
+                </TooltipContent>
+              </Tooltip>
             </div>
           </div>
         )}
@@ -696,6 +742,8 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
           allTransfers={sftp.transfers}
           canRevealTransferTarget={canRevealTransferTarget}
           onRevealTransferTarget={handleRevealTransferTarget}
+          canCopyTransferTargetPath={canCopyTransferTargetPath}
+          onCopyTransferTargetPath={handleCopyTransferTargetPath}
         />
       </div>
 
@@ -705,6 +753,10 @@ const SftpSidePanelInner: React.FC<SftpSidePanelProps> = ({
           sftp={sftp}
           visibleTransfers={visibleTransfers}
           showTransferQueue={false}
+          canRevealTransferTarget={canRevealTransferTarget}
+          onRevealTransferTarget={handleRevealTransferTarget}
+          canCopyTransferTargetPath={canCopyTransferTargetPath}
+          onCopyTransferTargetPath={handleCopyTransferTargetPath}
           showHostPickerLeft={showHostPickerLeft}
           showHostPickerRight={showHostPickerRight}
           hostSearchLeft={hostSearchLeft}
@@ -767,7 +819,11 @@ const sidePanelAreEqual = (prev: SftpSidePanelProps, next: SftpSidePanelProps):
   prev.onGetTerminalCwd === next.onGetTerminalCwd &&
   prev.onRequestTerminalFocus === next.onRequestTerminalFocus &&
   prev.initialLocation?.hostId === next.initialLocation?.hostId &&
-  prev.initialLocation?.path === next.initialLocation?.path;
+  prev.initialLocation?.path === next.initialLocation?.path &&
+  // Only the keepalive fields of terminalSettings affect SFTP connection
+  // resolution today; compare them directly rather than the whole object.
+  prev.terminalSettings?.keepaliveInterval === next.terminalSettings?.keepaliveInterval &&
+  prev.terminalSettings?.keepaliveCountMax === next.terminalSettings?.keepaliveCountMax;
 
 export const SftpSidePanel = memo(SftpSidePanelInner, sidePanelAreEqual);
 SftpSidePanel.displayName = "SftpSidePanel";

components/SftpTransferItem.test.tsx

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

components/SftpView.tsx

@@ -19,12 +19,13 @@ import { useI18n } from "../application/i18n/I18nProvider";
 import { useIsSftpActive } from "../application/state/activeTabStore";
 import { useSftpState } from "../application/state/useSftpState";
 import { useSftpBackend } from "../application/state/useSftpBackend";
+import { getParentPath, isConcreteTransferTargetPath } from "../application/state/sftp/utils";
 import { HotkeyScheme, KeyBinding } from "../domain/models";
 import { logger } from "../lib/logger";
 import { useRenderTracker } from "../lib/useRenderTracker";
 import { cn } from "../lib/utils";
 import { useInstantThemeSwitch } from "../lib/useInstantThemeSwitch";
-import { Host, Identity, ProxyProfile, SSHKey } from "../types";
+import { Host, Identity, ProxyProfile, SSHKey, TransferTask } from "../types";
 import { resolveGroupDefaults, applyGroupDefaults } from "../domain/groupConfig";
 import { materializeHostProxyProfile } from "../domain/proxyProfiles";
 import { useSftpFileAssociations } from "../application/state/useSftpFileAssociations";
@@ -66,6 +67,7 @@ interface SftpViewProps {
   keyBindings: KeyBinding[];
   editorWordWrap: boolean;
   setEditorWordWrap: (enabled: boolean) => void;
+  terminalSettings?: { keepaliveInterval: number; keepaliveCountMax: number };
 }
 
 const SftpViewInner: React.FC<SftpViewProps> = ({
@@ -84,6 +86,7 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
   keyBindings,
   editorWordWrap,
   setEditorWordWrap,
+  terminalSettings,
 }) => {
   const { t } = useI18n();
   const isActive = useIsSftpActive();
@@ -109,7 +112,8 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
     ...fileWatchHandlers,
     useCompressedUpload: sftpUseCompressedUpload,
     defaultShowHiddenFiles: sftpShowHiddenFiles,
-  }), [fileWatchHandlers, sftpUseCompressedUpload, sftpShowHiddenFiles]);
+    terminalSettings,
+  }), [fileWatchHandlers, sftpUseCompressedUpload, sftpShowHiddenFiles, terminalSettings]);
 
   // Pre-resolve group defaults so SFTP connections inherit group config
   const effectiveHosts = useMemo(() => {
@@ -133,6 +137,8 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
     mkdirLocal,
     deleteLocalFile,
     listLocalDir,
+    listDrives,
+    openPath,
   } = useSftpBackend();
 
   // Store sftp in a ref so callbacks can access the latest instance
@@ -259,6 +265,7 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
     startStreamTransfer,
     getSftpIdForConnection: sftp.getSftpIdForConnection,
     listLocalFiles: listLocalDir,
+    listDrives,
   });
 
   const visibleTransfers = useMemo(
@@ -266,6 +273,75 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
     [sftp.transfers],
   );
 
+  const getTransferTargetDirectory = useCallback(
+    (task: TransferTask) => (task.isDirectory ? task.targetPath : getParentPath(task.targetPath)),
+    [],
+  );
+
+  const findRemoteTransferTargetTab = useCallback((task: TransferTask) => {
+    const state = sftpRef.current;
+    for (const side of ["left", "right"] as const) {
+      const tabs = side === "left" ? state.leftTabs.tabs : state.rightTabs.tabs;
+      const pane = tabs.find((tab) => tab.connection?.id === task.targetConnectionId);
+      if (pane?.connection && !pane.connection.isLocal) {
+        return { side, tabId: pane.id };
+      }
+    }
+    return null;
+  }, []);
+
+  const canRevealTransferTarget = useCallback(
+    (task: TransferTask) => {
+      if (task.status !== "completed") return false;
+      if (!isConcreteTransferTargetPath(task)) return false;
+      if (task.targetConnectionId === "local") {
+        return true;
+      }
+      return !!findRemoteTransferTargetTab(task);
+    },
+    [findRemoteTransferTargetTab],
+  );
+
+  const handleRevealTransferTarget = useCallback(
+    async (task: TransferTask) => {
+      if (!isConcreteTransferTargetPath(task)) return;
+      const targetDirectory = getTransferTargetDirectory(task);
+      if (task.targetConnectionId === "local") {
+        try {
+          const result = await openPath(targetDirectory);
+          if (result.success) return;
+        } catch {
+          // Show the localized error below.
+        }
+        toast.error(t("sftp.transfers.openTargetFolderError"), "SFTP");
+        return;
+      }
+
+      const targetTab = findRemoteTransferTargetTab(task);
+      if (!targetTab) return;
+      await sftpRef.current.navigateTo(targetTab.side, targetDirectory, { force: true, tabId: targetTab.tabId });
+    },
+    [findRemoteTransferTargetTab, getTransferTargetDirectory, openPath, t],
+  );
+
+  const canCopyTransferTargetPath = useCallback(
+    (task: TransferTask) => task.status === "completed" && isConcreteTransferTargetPath(task),
+    [],
+  );
+
+  const handleCopyTransferTargetPath = useCallback(
+    async (task: TransferTask) => {
+      if (!isConcreteTransferTargetPath(task)) return;
+      try {
+        await navigator.clipboard.writeText(task.targetPath);
+        toast.success(t("sftp.transfers.copyTargetPathSuccess"), "SFTP");
+      } catch {
+        toast.error(t("sftp.transfers.copyTargetPathError"), "SFTP");
+      }
+    },
+    [t],
+  );
+
   const containerStyle: React.CSSProperties = isActive
     ? {}
     : {
@@ -470,6 +546,10 @@ const SftpViewInner: React.FC<SftpViewProps> = ({
           hosts={effectiveHosts}
           sftp={sftp}
           visibleTransfers={visibleTransfers}
+          canRevealTransferTarget={canRevealTransferTarget}
+          onRevealTransferTarget={handleRevealTransferTarget}
+          canCopyTransferTargetPath={canCopyTransferTargetPath}
+          onCopyTransferTargetPath={handleCopyTransferTargetPath}
           showHostPickerLeft={showHostPickerLeft}
           showHostPickerRight={showHostPickerRight}
           hostSearchLeft={hostSearchLeft}
@@ -521,7 +601,12 @@ const sftpViewAreEqual = (prev: SftpViewProps, next: SftpViewProps): boolean =>
   prev.hotkeyScheme === next.hotkeyScheme &&
   prev.keyBindings === next.keyBindings &&
   prev.editorWordWrap === next.editorWordWrap &&
-  prev.setEditorWordWrap === next.setEditorWordWrap;
+  prev.setEditorWordWrap === next.setEditorWordWrap &&
+  // Only the keepalive fields of terminalSettings affect SFTP connection
+  // resolution today; compare them directly rather than the whole object
+  // so unrelated terminal-setting changes don't tear the panel down.
+  prev.terminalSettings?.keepaliveInterval === next.terminalSettings?.keepaliveInterval &&
+  prev.terminalSettings?.keepaliveCountMax === next.terminalSettings?.keepaliveCountMax;
 
 export const SftpView = memo(SftpViewInner, sftpViewAreEqual);
 SftpView.displayName = "SftpView";

components/SnippetsManager.tsx

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

components/SyncStatusButton.tsx

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

components/Terminal.tsx

@@ -3,7 +3,7 @@ import { FitAddon } from "@xterm/addon-fit";
 import { SerializeAddon } from "@xterm/addon-serialize";
 import { SearchAddon } from "@xterm/addon-search";
 import "@xterm/xterm/css/xterm.css";
-import { Cpu, HardDrive, Maximize2, MemoryStick, Radio, ArrowDownToLine, ArrowUpFromLine } from "lucide-react";
+import { Cpu, Copy, HardDrive, Maximize2, MemoryStick, Radio, ArrowDownToLine, ArrowUpFromLine } from "lucide-react";
 import React, { memo, useCallback, useEffect, useLayoutEffect, useMemo, useRef, useState } from "react";
 import ReactDOM from "react-dom";
 import { useI18n } from "../application/i18n/I18nProvider";
@@ -35,8 +35,10 @@ import { useTerminalBackend } from "../application/state/useTerminalBackend";
 // SFTPModal removed - SFTP is now handled by SftpSidePanel in TerminalLayer
 import { Button } from "./ui/button";
 import { HoverCard, HoverCardContent, HoverCardTrigger } from "./ui/hover-card";
+import { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
 import { toast } from "./ui/toast";
 import { useAvailableFonts } from "../application/state/fontStore";
+import { composeFontFamilyStack, type SupportedPlatform } from "../infrastructure/config/cjkFonts";
 import { TERMINAL_THEMES } from "../infrastructure/config/terminalThemes";
 import { useCustomThemes } from "../application/state/customThemeStore";
 
@@ -48,10 +50,16 @@ import { TerminalComposeBar } from "./terminal/TerminalComposeBar";
 import { TerminalContextMenu } from "./terminal/TerminalContextMenu";
 import { TerminalSearchBar } from "./terminal/TerminalSearchBar";
 import { ZmodemProgressIndicator } from "./terminal/ZmodemProgressIndicator";
+import { createReplaySafeTerminalLogSanitizer } from "./terminal/replaySafeTerminalLog";
 import { useZmodemTransfer } from "./terminal/hooks/useZmodemTransfer";
 import { createTerminalSessionStarters, type PendingAuth } from "./terminal/runtime/createTerminalSessionStarters";
 import { createXTermRuntime, primaryFontFamily, type XTermRuntime } from "./terminal/runtime/createXTermRuntime";
 import { applyUserCursorPreference } from "./terminal/runtime/cursorPreference";
+import {
+  createPromptLineBreakState,
+  type PromptLineBreakState,
+} from "./terminal/runtime/promptLineBreak";
+import { recordTerminalCommandExecution } from "./terminal/runtime/terminalCommandExecution";
 import { shouldPreserveTerminalFocusOnMouseDown } from "./terminal/toolbarFocus";
 import { preserveTerminalViewportInScrollback } from "./terminal/clearTerminalViewport";
 import { XTERM_PERFORMANCE_CONFIG } from "../infrastructure/config/xtermPerformance";
@@ -61,6 +69,9 @@ import { useTerminalAuthState } from "./terminal/hooks/useTerminalAuthState";
 import { useServerStats } from "./terminal/hooks/useServerStats";
 import { extractDropEntries, getPathForFile, DropEntry } from "../lib/sftpFileUtils";
 import { useTerminalAutocomplete, AutocompletePopup } from "./terminal/autocomplete";
+import { createTerminalCwdTracker, resolvePreferredTerminalCwd } from "./terminal/sftpCwd";
+
+const MAX_CONNECTION_LOG_DATA_CHARS = 1_000_000;
 
 /**
  * Extract unique root paths from drop entries for local terminal path insertion.
@@ -161,6 +172,7 @@ interface TerminalProps {
     pendingUploadEntries?: DropEntry[],
     sourceSessionId?: string,
   ) => void;
+  onTerminalCwdChange?: (sessionId: string, cwd: string | null) => void;
   onOpenScripts?: () => void;
   onOpenTheme?: () => void;
   isBroadcastEnabled?: boolean;
@@ -251,6 +263,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   onSplitHorizontal,
   onSplitVertical,
   onOpenSftp,
+  onTerminalCwdChange,
   onOpenScripts,
   onOpenTheme,
   isBroadcastEnabled,
@@ -271,6 +284,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const serializeAddonRef = useRef<SerializeAddon | null>(null);
   const searchAddonRef = useRef<SearchAddon | null>(null);
   const xtermRuntimeRef = useRef<XTermRuntime | null>(null);
+  const terminalCwdTracker = useMemo(() => createTerminalCwdTracker(), []);
   const knownCwdRef = useRef<string | undefined>(undefined);
   const disposeDataRef = useRef<(() => void) | null>(null);
   const disposeExitRef = useRef<(() => void) | null>(null);
@@ -283,8 +297,11 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   // cancelled retry can't fire a startNewSession after the fact.
   const retryTokenRef = useRef<symbol | null>(null);
   const terminalDataCapturedRef = useRef(false);
+  const terminalLogDataRef = useRef("");
+  const terminalLogSanitizerRef = useRef(createReplaySafeTerminalLogSanitizer());
   const onTerminalDataCaptureRef = useRef(onTerminalDataCapture);
   const commandBufferRef = useRef<string>("");
+  const promptLineBreakStateRef = useRef<PromptLineBreakState>(createPromptLineBreakState());
   const [hasMouseTracking, setHasMouseTracking] = useState(false);
   const mouseTrackingRef = useRef(false);
   const serialLineBufferRef = useRef<string>("");
@@ -298,6 +315,32 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const lastFittedSizeRef = useRef<{ width: number; height: number } | null>(null);
   const fontWeightFixupDoneRef = useRef(false);
 
+  const captureTerminalLogData = useCallback((data: string) => {
+    const replaySafeData = terminalLogSanitizerRef.current.append(data);
+    if (!replaySafeData) return;
+    terminalLogDataRef.current += replaySafeData;
+    if (terminalLogDataRef.current.length > MAX_CONNECTION_LOG_DATA_CHARS) {
+      terminalLogDataRef.current = terminalLogDataRef.current.slice(-MAX_CONNECTION_LOG_DATA_CHARS);
+    }
+  }, []);
+
+  const finalizeTerminalLogData = useCallback(() => {
+    const replaySafeData = terminalLogSanitizerRef.current.finish();
+    if (replaySafeData) {
+      terminalLogDataRef.current += replaySafeData;
+      if (terminalLogDataRef.current.length > MAX_CONNECTION_LOG_DATA_CHARS) {
+        terminalLogDataRef.current = terminalLogDataRef.current.slice(-MAX_CONNECTION_LOG_DATA_CHARS);
+      }
+    }
+    return terminalLogDataRef.current;
+  }, []);
+
+  const writeLocalTerminalData = useCallback((data: string) => {
+    if (!data) return;
+    captureTerminalLogData(data);
+    termRef.current?.write(data);
+  }, [captureTerminalLogData]);
+
   useEffect(() => {
     if (xtermRuntimeRef.current) {
       // Merge global rules with host-level rules
@@ -435,20 +478,20 @@ const TerminalComponent: React.FC<TerminalProps> = ({
             const line = serialLineBufferRef.current + "\r";
             terminalBackend.writeToSession(id, line);
             serialLineBufferRef.current = "";
-            if (serialConfig?.localEcho) termRef.current?.write("\r\n");
+            if (serialConfig?.localEcho) writeLocalTerminalData("\r\n");
           } else if (ch === "\x15") {
             if (serialConfig?.localEcho && serialLineBufferRef.current.length > 0) {
-              termRef.current?.write("\b \b".repeat(serialLineBufferRef.current.length));
+              writeLocalTerminalData("\b \b".repeat(serialLineBufferRef.current.length));
             }
             serialLineBufferRef.current = "";
           } else if (ch === "\b" || ch === "\x7f") {
             if (serialLineBufferRef.current.length > 0) {
               serialLineBufferRef.current = serialLineBufferRef.current.slice(0, -1);
-              if (serialConfig?.localEcho) termRef.current?.write("\b \b");
+              if (serialConfig?.localEcho) writeLocalTerminalData("\b \b");
             }
           } else if (ch.charCodeAt(0) >= 32) {
             serialLineBufferRef.current += ch;
-            if (serialConfig?.localEcho) termRef.current?.write(ch);
+            if (serialConfig?.localEcho) writeLocalTerminalData(ch);
           }
         }
         // Still update commandBuffer and broadcast for serial line mode
@@ -458,9 +501,9 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         terminalBackend.writeToSession(id, text);
         for (const ch of text) {
           if (ch === "\r") {
-            termRef.current?.write("\r\n");
+            writeLocalTerminalData("\r\n");
           } else if (ch.charCodeAt(0) >= 32) {
-            termRef.current?.write(ch);
+            writeLocalTerminalData(ch);
           }
         }
       } else {
@@ -475,9 +518,14 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       // Update command buffer for onCommandExecuted tracking
       for (const ch of text) {
         if (ch === "\r" || ch === "\n") {
-          const cmd = commandBufferRef.current.trim();
-          if (cmd && onCommandExecuted) onCommandExecuted(cmd, host.id, host.label, sessionId);
-          commandBufferRef.current = "";
+          const rawCommand = commandBufferRef.current;
+          recordTerminalCommandExecution(rawCommand, {
+            host,
+            sessionId,
+            onCommandExecuted,
+            commandBufferRef,
+            promptLineBreakStateRef,
+          }, termRef.current);
         } else if (ch === "\x15") {
           // Ctrl+U: clear line — reset command buffer (fuzzy match sends this)
           commandBufferRef.current = "";
@@ -508,7 +556,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     } : undefined,
     onAcceptText: (text) => autocompleteAcceptTextRef.current?.(text),
     protocol: host.protocol,
-    getCwd: () => knownCwdRef.current ?? xtermRuntimeRef.current?.currentCwd,
+    getCwd: () => terminalCwdTracker.getRendererCwd() ?? knownCwdRef.current,
   });
 
   // Wire up autocomplete handler refs so createXTermRuntime can use them
@@ -517,9 +565,25 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   autocompleteRepositionRef.current = autocomplete.repositionPopup;
   const autocompleteClosePopup = autocomplete.closePopup;
 
-  useEffect(() => {
+  const resolveSftpInitialPath = useCallback(async (): Promise<string | undefined> => {
+    const cwd = await resolvePreferredTerminalCwd({
+      rendererCwd: terminalCwdTracker.getRendererCwd(),
+      sessionId: sessionRef.current,
+      getSessionPwd: (id) => terminalBackend.getSessionPwd(id),
+    });
+    return cwd ?? undefined;
+  }, [terminalBackend, terminalCwdTracker]);
+
+  const clearTerminalCwd = useCallback(() => {
+    terminalCwdTracker.clearRendererCwd();
     knownCwdRef.current = undefined;
-  }, [sessionId, host.id]);
+    onTerminalCwdChange?.(sessionId, null);
+  }, [onTerminalCwdChange, sessionId, terminalCwdTracker]);
+
+  useEffect(() => {
+    clearTerminalCwd();
+    return clearTerminalCwd;
+  }, [clearTerminalCwd, host.id]);
 
   useEffect(() => {
     if (host.protocol === "local" || host.protocol === "serial" || host.protocol === "telnet") {
@@ -532,7 +596,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       if (!sessionRef.current) return;
       try {
         const result = await terminalBackend.getSessionPwd(sessionRef.current);
-        if (!cancelled && result.success && result.cwd) {
+        if (!cancelled && !terminalCwdTracker.getRendererCwd() && result.success && result.cwd) {
           knownCwdRef.current = result.cwd;
         }
       } catch {
@@ -544,7 +608,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       cancelled = true;
       clearTimeout(timer);
     };
-  }, [host.protocol, status, terminalBackend]);
+  }, [host.protocol, status, terminalBackend, terminalCwdTracker]);
 
   useEffect(() => {
     if (!isVisible) {
@@ -709,8 +773,20 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       ? host.fontFamily
       : fontFamilyId;
     const resolvedFontId = hostFontId || "menlo";
-    return (availableFonts.find((f) => f.id === resolvedFontId) || availableFonts[0]).family;
-  }, [availableFonts, fontFamilyId, hasFontFamilyOverride, host.fontFamily]);
+    const selectedFont = availableFonts.find((f) => f.id === resolvedFontId) || availableFonts[0];
+    const platform: SupportedPlatform =
+      typeof navigator !== "undefined" && /Mac/i.test(navigator.platform)
+        ? "darwin"
+        : typeof navigator !== "undefined" && /Win/i.test(navigator.platform)
+          ? "win32"
+          : "linux";
+    return composeFontFamilyStack({
+      primaryFamily: selectedFont.family,
+      userFallback: terminalSettings?.fallbackFont ?? "",
+      latinFontId: resolvedFontId,
+      platform,
+    });
+  }, [availableFonts, fontFamilyId, hasFontFamilyOverride, host.fontFamily, terminalSettings?.fallbackFont]);
 
   const effectiveTheme = useMemo(() => {
     // When "Follow Application Theme" is on and there's no active
@@ -740,12 +816,15 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     hasConnectedRef.current = next === "connected";
     onStatusChange?.(sessionId, next);
   };
+
   const handleTerminalDataCaptureOnce = useCallback((capturedSessionId: string, data: string) => {
     const captureHandler = onTerminalDataCaptureRef.current;
     if (!captureHandler || terminalDataCapturedRef.current) return;
     terminalDataCapturedRef.current = true;
-    captureHandler(capturedSessionId, data);
-  }, []);
+    const replaySafeLogData = finalizeTerminalLogData();
+    const capturedData = replaySafeLogData || data;
+    captureHandler(capturedSessionId, capturedData);
+  }, [finalizeTerminalLogData]);
 
   const cleanupSession = () => {
     disposeDataRef.current?.();
@@ -797,6 +876,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     fitAddonRef,
     serializeAddonRef,
     pendingAuthRef,
+    promptLineBreakStateRef,
     updateStatus,
     setStatus,
     setError,
@@ -808,6 +888,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     setChainProgress,
     t,
     onSessionAttached: (id: string) => {
+      clearTerminalCwd();
       // SSH: always sync. Its backend starts in utf-8 regardless of
       // host.charset, so the push is what keeps the UI state aligned
       // across reconnects — including localhost SSH targets, hence
@@ -831,8 +912,12 @@ const TerminalComponent: React.FC<TerminalProps> = ({
         setSessionEncoding(id, terminalEncodingRef.current);
       }
     },
-    onSessionExit,
+    onSessionExit: (closedSessionId, evt) => {
+      clearTerminalCwd();
+      onSessionExit?.(closedSessionId, evt);
+    },
     onTerminalDataCapture: handleTerminalDataCaptureOnce,
+    onTerminalLogData: captureTerminalLogData,
     onOsDetected,
     onCommandExecuted,
     sessionLog,
@@ -842,6 +927,8 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   useEffect(() => {
     let disposed = false;
     terminalDataCapturedRef.current = false;
+    terminalLogDataRef.current = "";
+    terminalLogSanitizerRef.current = createReplaySafeTerminalLogSanitizer();
     setError(null);
     hasConnectedRef.current = false;
     pendingOutputScrollRef.current = false;
@@ -849,6 +936,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     setShowLogs(false);
     setIsCancelling(false);
     setIsDisconnectedDialogDismissed(false);
+    promptLineBreakStateRef.current = createPromptLineBreakState();
 
     const boot = async () => {
       try {
@@ -873,13 +961,17 @@ const TerminalComponent: React.FC<TerminalProps> = ({
           statusRef,
           onCommandExecuted,
           commandBufferRef,
+          promptLineBreakStateRef,
           setIsSearchOpen,
           // Serial-specific options
           serialLocalEcho: serialConfig?.localEcho,
           serialLineMode: serialConfig?.lineMode,
           serialLineBufferRef,
+          onTerminalLogData: captureTerminalLogData,
           onCwdChange: (cwd: string) => {
+            terminalCwdTracker.setRendererCwd(cwd);
             knownCwdRef.current = cwd;
+            onTerminalCwdChange?.(sessionId, cwd);
           },
           onOsc52ReadRequest: handleOsc52ReadRequest,
           // Autocomplete integration
@@ -1381,14 +1473,32 @@ const TerminalComponent: React.FC<TerminalProps> = ({
     if (!el) return;
 
     const handleContextMenuCapture = (e: MouseEvent) => {
-      if (mouseTrackingRef.current) {
-        e.preventDefault();
-        e.stopImmediatePropagation();
+      if (!mouseTrackingRef.current) return;
+      if (statusRef.current !== 'connected') return;
+      e.preventDefault();
+      e.stopImmediatePropagation();
+
+      // stopImmediatePropagation blocks the event from reaching React's
+      // bubble-phase root listener, so the onContextMenu handler in
+      // TerminalContextMenu (which dispatches paste / select-word) never
+      // fires inside a mouse-tracking TUI. Without dispatching the user's
+      // chosen action here, right-click paste silently stops working in
+      // opencode, tmux with `mouse on`, vim with `set mouse=a`, etc. (#941).
+      // Middle-click still works because its auxclick listener lives in
+      // createXTermRuntime and isn't gated by mouseTracking.
+      const behavior = terminalSettingsRef.current?.rightClickBehavior;
+      if (behavior === 'paste') {
+        void terminalContextActionsRef.current?.onPaste?.();
+      } else if (behavior === 'select-word') {
+        terminalContextActionsRef.current?.onSelectWord?.();
       }
+      // 'context-menu' is intentionally not handled — Radix opens the
+      // menu via its own pointerdown listener, which our capture handler
+      // does not intercept.
     };
 
     const handleMouseUpCapture = (e: MouseEvent) => {
-      if (e.button === 2 && mouseTrackingRef.current) {
+      if (e.button === 2 && mouseTrackingRef.current && statusRef.current === 'connected') {
         e.stopImmediatePropagation();
       }
     };
@@ -1475,12 +1585,19 @@ const TerminalComponent: React.FC<TerminalProps> = ({
 
   const terminalContextActions = useTerminalContextActions({
     termRef,
+    sourceSessionId: sessionId,
     sessionRef,
-    terminalBackend,
     onHasSelectionChange: setHasSelection,
-    disableBracketedPasteRef,
     scrollOnPasteRef,
+    isBroadcastEnabledRef,
+    onBroadcastInputRef,
   });
+  // Kept fresh on every render so the mouseTracking capture handler at
+  // handleContextMenuCapture (which is bound once per sessionId) can
+  // still invoke the latest paste / select-word callbacks without
+  // re-binding on every action identity change. See #941.
+  const terminalContextActionsRef = useRef(terminalContextActions);
+  terminalContextActionsRef.current = terminalContextActions;
 
   const handleSetTerminalEncoding = (encoding: 'utf-8' | 'gb18030') => {
     setTerminalEncoding(encoding);
@@ -1493,17 +1610,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
   const handleOpenSFTP = async () => {
     if (onOpenSftp) {
       // Delegate to parent (TerminalLayer) for shared SFTP side panel
-      let initialPath: string | undefined = undefined;
-      if (sessionRef.current) {
-        try {
-          const result = await terminalBackend.getSessionPwd(sessionRef.current);
-          if (result.success && result.cwd) {
-            initialPath = result.cwd;
-          }
-        } catch {
-          // Silently fail
-        }
-      }
+      const initialPath = await resolveSftpInitialPath();
       onOpenSftp(host, initialPath, undefined, sessionId);
       return;
     }
@@ -1716,17 +1823,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       } else {
         // Remote terminal: Trigger SFTP upload via parent
         if (onOpenSftp) {
-          let initialPath: string | undefined = undefined;
-          if (sessionRef.current) {
-            try {
-              const result = await terminalBackend.getSessionPwd(sessionRef.current);
-              if (result.success && result.cwd) {
-                initialPath = result.cwd;
-              }
-            } catch {
-              // Silently fail
-            }
-          }
+          const initialPath = await resolveSftpInitialPath();
           onOpenSftp(host, initialPath, dropEntries, sessionId);
         }
       }
@@ -1785,6 +1882,8 @@ const TerminalComponent: React.FC<TerminalProps> = ({
       onSelectWord={terminalContextActions.onSelectWord}
       onSplitHorizontal={onSplitHorizontal}
       onSplitVertical={onSplitVertical}
+      isReconnectable={status === "disconnected"}
+      onReconnect={handleRetry}
       onClose={inWorkspace ? () => onCloseSession?.(sessionId) : undefined}
     >
       <div
@@ -1842,6 +1941,27 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                   statusDotTone,
                 )}
               />
+              {host.protocol !== "local" && host.hostname && host.hostname !== "localhost" && (
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <button
+                      type="button"
+                      className="ml-0.5 p-0.5 rounded hover:bg-[color:var(--terminal-toolbar-btn-hover)] transition-colors opacity-60 hover:opacity-100 flex-shrink-0"
+                      onClick={() => {
+                        void navigator.clipboard.writeText(host.hostname).then(() => {
+                          toast.success(t("terminal.statusbar.copyHostname.toast", { hostname: host.hostname }));
+                        }).catch(() => {
+                          toast.error(t("terminal.statusbar.copyHostname.error"));
+                        });
+                      }}
+                      aria-label={t("terminal.statusbar.copyHostname.label")}
+                    >
+                      <Copy size={10} />
+                    </button>
+                  </TooltipTrigger>
+                  <TooltipContent side="bottom">{t("terminal.statusbar.copyHostname.tooltip", { hostname: host.hostname })}</TooltipContent>
+                </Tooltip>
+              )}
             </div>
             {/* Server Stats Display */}
             {terminalSettings?.showServerStats && status === 'connected' && serverStats.lastUpdated && (
@@ -1851,7 +1971,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                   <HoverCardTrigger asChild>
                     <button
                       className="flex items-center gap-0.5 hover:opacity-100 opacity-80 transition-opacity cursor-pointer flex-shrink-0"
-                      title={t("terminal.serverStats.cpu")}
+                      aria-label={t("terminal.serverStats.cpu")}
                     >
                       <Cpu size={10} className="flex-shrink-0" />
                       <span>
@@ -1920,7 +2040,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                   <HoverCardTrigger asChild>
                     <button
                       className="flex items-center gap-0.5 hover:opacity-100 opacity-80 transition-opacity cursor-pointer flex-shrink-0"
-                      title={t("terminal.serverStats.memory")}
+                      aria-label={t("terminal.serverStats.memory")}
                     >
                       <MemoryStick size={10} className="flex-shrink-0" />
                       <span>
@@ -1942,12 +2062,11 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                       {serverStats.memTotal !== null && (
                         <div className="space-y-1.5">
                           <div className="w-full h-3 bg-muted rounded overflow-hidden flex">
-                            {/* Used (green) */}
+                            {/* Used (green) — exact value shown in legend below */}
                             {serverStats.memUsed !== null && serverStats.memUsed > 0 && (
                               <div
                                 className="h-full bg-emerald-500"
                                 style={{ width: `${(serverStats.memUsed / serverStats.memTotal) * 100}%` }}
-                                title={`${t("terminal.serverStats.memUsed")}: ${(serverStats.memUsed / 1024).toFixed(1)}G`}
                               />
                             )}
                             {/* Buffers (blue) */}
@@ -1955,7 +2074,6 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                               <div
                                 className="h-full bg-blue-500"
                                 style={{ width: `${(serverStats.memBuffers / serverStats.memTotal) * 100}%` }}
-                                title={`${t("terminal.serverStats.memBuffers")}: ${(serverStats.memBuffers / 1024).toFixed(1)}G`}
                               />
                             )}
                             {/* Cached (amber/orange) */}
@@ -1963,7 +2081,6 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                               <div
                                 className="h-full bg-amber-500"
                                 style={{ width: `${(serverStats.memCached / serverStats.memTotal) * 100}%` }}
-                                title={`${t("terminal.serverStats.memCached")}: ${(serverStats.memCached / 1024).toFixed(1)}G`}
                               />
                             )}
                           </div>
@@ -1997,7 +2114,6 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                               <div
                                 className="h-full bg-rose-500"
                                 style={{ width: `${(serverStats.swapUsed / serverStats.swapTotal) * 100}%` }}
-                                title={`${t("terminal.serverStats.swapUsed")}: ${(serverStats.swapUsed / 1024).toFixed(1)}G`}
                               />
                             )}
                           </div>
@@ -2030,9 +2146,14 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                                     style={{ width: `${Math.min(100, proc.memPercent * 2)}%` }}
                                   />
                                 </div>
-                                <span className="flex-shrink-0 font-mono truncate max-w-[140px]" title={proc.command}>
-                                  {proc.command.split('/').pop()?.split(' ')[0] || proc.command}
-                                </span>
+                                <Tooltip>
+                                  <TooltipTrigger asChild>
+                                    <span className="flex-shrink-0 font-mono truncate max-w-[140px] cursor-default">
+                                      {proc.command.split('/').pop()?.split(' ')[0] || proc.command}
+                                    </span>
+                                  </TooltipTrigger>
+                                  <TooltipContent>{proc.command}</TooltipContent>
+                                </Tooltip>
                               </div>
                             ))}
                           </div>
@@ -2046,7 +2167,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                   <HoverCardTrigger asChild>
                     <button
                       className="flex items-center gap-0.5 hover:opacity-100 opacity-80 transition-opacity cursor-pointer flex-shrink-0"
-                      title={t("terminal.serverStats.disk")}
+                      aria-label={t("terminal.serverStats.disk")}
                     >
                       <HardDrive size={10} className="flex-shrink-0" />
                       <span className={cn(
@@ -2074,9 +2195,14 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                           {serverStats.disks.map((disk, index) => (
                             <div key={index} className="flex flex-col gap-1 min-w-[180px]">
                               <div className="flex items-center justify-between gap-4">
-                                <span className="text-[10px] text-muted-foreground font-mono truncate max-w-[120px]" title={disk.mountPoint}>
-                                  {disk.mountPoint}
-                                </span>
+                                <Tooltip>
+                                  <TooltipTrigger asChild>
+                                    <span className="text-[10px] text-muted-foreground font-mono truncate max-w-[120px] cursor-default">
+                                      {disk.mountPoint}
+                                    </span>
+                                  </TooltipTrigger>
+                                  <TooltipContent>{disk.mountPoint}</TooltipContent>
+                                </Tooltip>
                                 <span className={cn(
                                   "text-[11px] font-medium whitespace-nowrap",
                                   disk.percent >= 90 ? "text-red-400" : disk.percent >= 80 ? "text-amber-400" : "text-emerald-400"
@@ -2108,7 +2234,7 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                     <HoverCardTrigger asChild>
                       <button
                         className="flex items-center gap-1 hover:opacity-100 opacity-80 transition-opacity cursor-pointer flex-shrink-0"
-                        title={t("terminal.serverStats.network")}
+                        aria-label={t("terminal.serverStats.network")}
                       >
                         <ArrowDownToLine size={9} className="flex-shrink-0 text-emerald-400" />
                         <span>{formatNetSpeed(serverStats.netRxSpeed)}</span>
@@ -2152,40 +2278,48 @@ const TerminalComponent: React.FC<TerminalProps> = ({
             <div className="flex-1" />
             <div className="flex items-center gap-0.5 flex-shrink-0">
               {inWorkspace && onToggleBroadcast && (
-                <Button
-                  variant="secondary"
-                  size="icon"
-                  className={cn(
-                    "h-6 w-6 p-0 shadow-none border-none text-[color:var(--terminal-toolbar-fg)]",
-                    "bg-transparent hover:bg-transparent",
-                    isBroadcastEnabled && "text-green-500",
-                  )}
-                  onClick={onToggleBroadcast}
-                  title={
-                    isBroadcastEnabled
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <Button
+                      variant="secondary"
+                      size="icon"
+                      className={cn(
+                        "h-6 w-6 p-0 shadow-none border-none text-[color:var(--terminal-toolbar-fg)]",
+                        "bg-transparent hover:bg-transparent",
+                        isBroadcastEnabled && "text-green-500",
+                      )}
+                      onClick={onToggleBroadcast}
+                      aria-label={
+                        isBroadcastEnabled
+                          ? t("terminal.toolbar.broadcastDisable")
+                          : t("terminal.toolbar.broadcastEnable")
+                      }
+                    >
+                      <Radio size={12} />
+                    </Button>
+                  </TooltipTrigger>
+                  <TooltipContent side="bottom">
+                    {isBroadcastEnabled
                       ? t("terminal.toolbar.broadcastDisable")
-                      : t("terminal.toolbar.broadcastEnable")
-                  }
-                  aria-label={
-                    isBroadcastEnabled
-                      ? t("terminal.toolbar.broadcastDisable")
-                      : t("terminal.toolbar.broadcastEnable")
-                  }
-                >
-                  <Radio size={12} />
-                </Button>
+                      : t("terminal.toolbar.broadcastEnable")}
+                  </TooltipContent>
+                </Tooltip>
               )}
               {inWorkspace && !isFocusMode && onExpandToFocus && (
-                <Button
-                  variant="secondary"
-                  size="icon"
-                  className="h-6 w-6 p-0 shadow-none border-none text-[color:var(--terminal-toolbar-fg)] bg-transparent hover:bg-transparent"
-                  onClick={onExpandToFocus}
-                  title={t("terminal.toolbar.focusMode")}
-                  aria-label={t("terminal.toolbar.focusMode")}
-                >
-                  <Maximize2 size={12} />
-                </Button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <Button
+                      variant="secondary"
+                      size="icon"
+                      className="h-6 w-6 p-0 shadow-none border-none text-[color:var(--terminal-toolbar-fg)] bg-transparent hover:bg-transparent"
+                      onClick={onExpandToFocus}
+                      aria-label={t("terminal.toolbar.focusMode")}
+                    >
+                      <Maximize2 size={12} />
+                    </Button>
+                  </TooltipTrigger>
+                  <TooltipContent side="bottom">{t("terminal.toolbar.focusMode")}</TooltipContent>
+                </Tooltip>
               )}
               {renderControls({ showClose: inWorkspace })}
             </div>

components/TerminalLayer.memo.test.tsx

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

components/TextEditorModal.tsx

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

components/ThemeList.tsx

@@ -10,7 +10,7 @@ import { cn } from '../lib/utils';
 import { TerminalTheme } from '../types';
 
 // Memoized theme item component
-export const ThemeItem = memo(({
+const ThemeItem = memo(({
     theme,
     isSelected,
     onSelect

components/TrafficDiagram.tsx

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

components/TrayPanel.tsx

@@ -4,6 +4,7 @@ import { useSessionState } from "../application/state/useSessionState";
 import { usePortForwardingState } from "../application/state/usePortForwardingState";
 import { useVaultState } from "../application/state/useVaultState";
 import { toast } from "./ui/toast";
+import { Tooltip, TooltipContent, TooltipTrigger } from "./ui/tooltip";
 import { cn } from "../lib/utils";
 import { useI18n } from "../application/i18n/I18nProvider";
 import { I18nProvider } from "../application/i18n/I18nProvider";
@@ -78,28 +79,31 @@ const WorkspaceGroup: React.FC<{
       {expanded && (
         <div className="ml-4 mt-0.5 space-y-0.5">
           {sessions.map((s) => (
-            <button
-              key={s.id}
-              title={s.hostLabel || s.label}
-              onClick={() => {
-                // Jump to session (using session id)
-                void jumpToSession(s.id);
-              }}
-              className={cn(
-                "w-full text-left px-2 py-1 rounded hover:bg-muted flex items-center justify-between text-sm",
-                s.status === "connected" ? "" : "text-muted-foreground",
-                activeTabId === s.id ? "bg-muted/60" : "",
-              )}
-            >
-              <span className="flex items-center gap-2 min-w-0">
-                <StatusDot
-                  status={s.status === "connected" ? "success" : s.status === "connecting" ? "warning" : "error"}
-                  spinning={s.status === "connecting"}
-                />
-                <span className="truncate">{s.hostLabel || s.label}</span>
-              </span>
-              <span className="ml-2 text-xs text-muted-foreground">{t(`tray.status.${s.status}`)}</span>
-            </button>
+            <Tooltip key={s.id}>
+              <TooltipTrigger asChild>
+                <button
+                  onClick={() => {
+                    // Jump to session (using session id)
+                    void jumpToSession(s.id);
+                  }}
+                  className={cn(
+                    "w-full text-left px-2 py-1 rounded hover:bg-muted flex items-center justify-between text-sm",
+                    s.status === "connected" ? "" : "text-muted-foreground",
+                    activeTabId === s.id ? "bg-muted/60" : "",
+                  )}
+                >
+                  <span className="flex items-center gap-2 min-w-0">
+                    <StatusDot
+                      status={s.status === "connected" ? "success" : s.status === "connecting" ? "warning" : "error"}
+                      spinning={s.status === "connecting"}
+                    />
+                    <span className="truncate">{s.hostLabel || s.label}</span>
+                  </span>
+                  <span className="ml-2 text-xs text-muted-foreground">{t(`tray.status.${s.status}`)}</span>
+                </button>
+              </TooltipTrigger>
+              <TooltipContent>{s.hostLabel || s.label}</TooltipContent>
+            </Tooltip>
           ))}
         </div>
       )}
@@ -107,7 +111,11 @@ const WorkspaceGroup: React.FC<{
   );
 };
 
-const TrayPanelContent: React.FC = () => {
+interface TrayPanelContentProps {
+  terminalSettings?: { keepaliveInterval: number; keepaliveCountMax: number };
+}
+
+const TrayPanelContent: React.FC<TrayPanelContentProps> = ({ terminalSettings }) => {
   const { t } = useI18n();
   const {
     hideTrayPanel,
@@ -215,17 +223,20 @@ const TrayPanelContent: React.FC = () => {
           <span className="text-sm font-medium">Netcatty</span>
         </div>
         <div className="flex items-center gap-1">
-          <button
-            className="p-1 rounded hover:bg-muted text-muted-foreground hover:text-foreground"
-            onClick={handleOpenMain}
-            title={t("tray.openMainWindow")}
-          >
-            <Maximize2 size={14} />
-          </button>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <button
+                className="p-1 rounded hover:bg-muted text-muted-foreground hover:text-foreground"
+                onClick={handleOpenMain}
+              >
+                <Maximize2 size={14} />
+              </button>
+            </TooltipTrigger>
+            <TooltipContent>{t("tray.openMainWindow")}</TooltipContent>
+          </Tooltip>
           <button
             className="p-1 rounded hover:bg-muted text-muted-foreground hover:text-foreground"
             onClick={handleClose}
-            title="Close"
           >
             <X size={14} />
           </button>
@@ -273,27 +284,30 @@ const TrayPanelContent: React.FC = () => {
                 ))}
                 {/* Solo sessions */}
                 {soloSessions.map((s) => (
-                  <button
-                    key={s.id}
-                    title={s.hostLabel || s.label}
-                    onClick={() => {
-                      void jumpToSession(s.id);
-                    }}
-                    className={cn(
-                      "w-full text-left px-2 py-1.5 rounded hover:bg-muted flex items-center justify-between",
-                      s.status === "connected" ? "" : "text-muted-foreground",
-                      activeTabId === s.id ? "bg-muted" : "",
-                    )}
-                  >
-                    <span className="flex items-center gap-2 min-w-0">
-                      <StatusDot
-                        status={s.status === "connected" ? "success" : s.status === "connecting" ? "warning" : "error"}
-                        spinning={s.status === "connecting"}
-                      />
-                      <span className="truncate">{s.hostLabel || s.label}</span>
-                    </span>
-                    <span className="ml-2 text-xs text-muted-foreground">{t(`tray.status.${s.status}`)}</span>
-                  </button>
+                  <Tooltip key={s.id}>
+                    <TooltipTrigger asChild>
+                      <button
+                        onClick={() => {
+                          void jumpToSession(s.id);
+                        }}
+                        className={cn(
+                          "w-full text-left px-2 py-1.5 rounded hover:bg-muted flex items-center justify-between",
+                          s.status === "connected" ? "" : "text-muted-foreground",
+                          activeTabId === s.id ? "bg-muted" : "",
+                        )}
+                      >
+                        <span className="flex items-center gap-2 min-w-0">
+                          <StatusDot
+                            status={s.status === "connected" ? "success" : s.status === "connecting" ? "warning" : "error"}
+                            spinning={s.status === "connecting"}
+                          />
+                          <span className="truncate">{s.hostLabel || s.label}</span>
+                        </span>
+                        <span className="ml-2 text-xs text-muted-foreground">{t(`tray.status.${s.status}`)}</span>
+                      </button>
+                    </TooltipTrigger>
+                    <TooltipContent>{s.hostLabel || s.label}</TooltipContent>
+                  </Tooltip>
                 ))}
               </div>
             </div>
@@ -303,16 +317,20 @@ const TrayPanelContent: React.FC = () => {
         {activeSession && (
           <div>
             <div className="px-2 py-1 text-xs text-muted-foreground">Current</div>
-            <Button
-              variant="ghost"
-              className="w-full justify-start px-2 h-8"
-              title={activeSession.hostLabel || activeSession.label}
-              onClick={() => {
-                void jumpToSession(activeSession.id);
-              }}
-            >
-              <span className="truncate">{activeSession.hostLabel || activeSession.label}</span>
-            </Button>
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button
+                  variant="ghost"
+                  className="w-full justify-start px-2 h-8"
+                  onClick={() => {
+                    void jumpToSession(activeSession.id);
+                  }}
+                >
+                  <span className="truncate">{activeSession.hostLabel || activeSession.label}</span>
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent>{activeSession.hostLabel || activeSession.label}</TooltipContent>
+            </Tooltip>
           </div>
         )}
 
@@ -328,55 +346,58 @@ const TrayPanelContent: React.FC = () => {
                   : `${rule.localPort} → ${rule.remoteHost}:${rule.remotePort}`);
 
                 return (
-                  <button
-                    key={rule.id}
-                    disabled={isConnecting}
-                    title={label}
-                    onClick={() => {
-                      const rawHost = rule.hostId ? hosts.find((h) => h.id === rule.hostId) : undefined;
-                      if (!rawHost) {
-                        toast.error(t("pf.error.hostNotFound"));
-                        return;
-                      }
-                      if (isActive) {
-                        void stopTunnel(rule.id);
-                      } else {
-                        const resolveEffectiveHost = (host: Host) => {
-                          const withGroupDefaults = host.group
-                            ? applyGroupDefaults(host, resolveGroupDefaults(host.group, groupConfigs, { validProxyProfileIds: proxyProfileIdSet }), { validProxyProfileIds: proxyProfileIdSet })
-                            : applyGroupDefaults(host, {}, { validProxyProfileIds: proxyProfileIdSet });
-                          return materializeHostProxyProfile(withGroupDefaults, proxyProfiles);
-                        };
-                        const host = resolveEffectiveHost(rawHost);
-                        void startTunnel(rule, host, hosts.map(resolveEffectiveHost), keys, identities, (status, error) => {
-                          if (status === "error" && error) toast.error(error);
-                        }, rule.autoStart);
-                      }
-                    }}
-                    className={cn(
-                      "w-full text-left px-2 py-1.5 rounded hover:bg-muted flex items-center justify-between",
-                      isConnecting ? "opacity-60" : "",
-                    )}
-                  >
-                    <span className="flex items-center gap-2 min-w-0">
-                      <StatusDot
-                        status={
-                          rule.status === "active"
-                            ? "success"
-                            : rule.status === "connecting"
-                              ? "warning"
-                              : rule.status === "error"
-                                ? "error"
-                                : "neutral"
-                        }
-                        spinning={rule.status === "connecting"}
-                      />
-                      <span className="truncate">{label}</span>
-                    </span>
-                    <span className="ml-2 text-xs text-muted-foreground">
-                      {t(`tray.status.${rule.status}`)}
-                    </span>
-                  </button>
+                  <Tooltip key={rule.id}>
+                    <TooltipTrigger asChild>
+                      <button
+                        disabled={isConnecting}
+                        onClick={() => {
+                          const rawHost = rule.hostId ? hosts.find((h) => h.id === rule.hostId) : undefined;
+                          if (!rawHost) {
+                            toast.error(t("pf.error.hostNotFound"));
+                            return;
+                          }
+                          if (isActive) {
+                            void stopTunnel(rule.id);
+                          } else {
+                            const resolveEffectiveHost = (host: Host) => {
+                              const withGroupDefaults = host.group
+                                ? applyGroupDefaults(host, resolveGroupDefaults(host.group, groupConfigs, { validProxyProfileIds: proxyProfileIdSet }), { validProxyProfileIds: proxyProfileIdSet })
+                                : applyGroupDefaults(host, {}, { validProxyProfileIds: proxyProfileIdSet });
+                              return materializeHostProxyProfile(withGroupDefaults, proxyProfiles);
+                            };
+                            const host = resolveEffectiveHost(rawHost);
+                            void startTunnel(rule, host, hosts.map(resolveEffectiveHost), keys, identities, (status, error) => {
+                              if (status === "error" && error) toast.error(error);
+                            }, rule.autoStart, terminalSettings);
+                          }
+                        }}
+                        className={cn(
+                          "w-full text-left px-2 py-1.5 rounded hover:bg-muted flex items-center justify-between",
+                          isConnecting ? "opacity-60" : "",
+                        )}
+                      >
+                        <span className="flex items-center gap-2 min-w-0">
+                          <StatusDot
+                            status={
+                              rule.status === "active"
+                                ? "success"
+                                : rule.status === "connecting"
+                                  ? "warning"
+                                  : rule.status === "error"
+                                    ? "error"
+                                    : "neutral"
+                            }
+                            spinning={rule.status === "connecting"}
+                          />
+                          <span className="truncate">{label}</span>
+                        </span>
+                        <span className="ml-2 text-xs text-muted-foreground">
+                          {t(`tray.status.${rule.status}`)}
+                        </span>
+                      </button>
+                    </TooltipTrigger>
+                    <TooltipContent>{label}</TooltipContent>
+                  </Tooltip>
                 );
               })}
             </div>
@@ -411,7 +432,7 @@ const TrayPanel: React.FC = () => {
   const settings = useSettingsState();
   return (
     <I18nProvider locale={settings.uiLanguage}>
-      <TrayPanelContent />
+      <TrayPanelContent terminalSettings={settings.terminalSettings} />
     </I18nProvider>
   );
 };

components/VaultView.sortPersistence.test.tsx

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

components/VaultView.tsx

@@ -35,6 +35,7 @@ import React, { Suspense, lazy, memo, startTransition, useCallback, useEffect, u
 import { useI18n } from "../application/i18n/I18nProvider";
 import { useStoredViewMode } from "../application/state/useStoredViewMode";
 import { useStoredBoolean } from "../application/state/useStoredBoolean";
+import { useStoredString } from "../application/state/useStoredString";
 import { useTreeExpandedState } from "../application/state/useTreeExpandedState";
 import { sanitizeCredentialValue } from "../domain/credentials";
 import { resolveGroupDefaults, applyGroupDefaults } from "../domain/groupConfig";
@@ -50,6 +51,7 @@ import { upsertKnownHost } from "../domain/knownHosts";
 import { importVaultHostsFromText, exportHostsToCsvWithStats } from "../domain/vaultImport";
 import type { VaultImportFormat } from "../domain/vaultImport";
 import {
+  STORAGE_KEY_VAULT_HOSTS_SORT_MODE,
   STORAGE_KEY_VAULT_HOSTS_TREE_EXPANDED,
   STORAGE_KEY_VAULT_HOSTS_VIEW_MODE,
   STORAGE_KEY_VAULT_SIDEBAR_COLLAPSED,
@@ -70,7 +72,6 @@ import {
   SSHKey,
   ShellHistoryEntry,
   Snippet,
-  TerminalSession,
 } from "../types";
 import { AppLogo } from "./AppLogo";
 import { DistroAvatar } from "./DistroAvatar";
@@ -122,6 +123,13 @@ type DropTarget =
   | { kind: "root" }
   | { kind: "group"; path: string };
 
+const isSortMode = (value: string): value is SortMode =>
+  value === "az" ||
+  value === "za" ||
+  value === "newest" ||
+  value === "oldest" ||
+  value === "group";
+
 // Props without isActive - it's now subscribed internally
 interface VaultViewProps {
   hosts: Host[];
@@ -135,7 +143,7 @@ interface VaultViewProps {
   shellHistory: ShellHistoryEntry[];
   connectionLogs: ConnectionLog[];
   managedSources: ManagedSource[];
-  sessions: TerminalSession[];
+  sessionCount: number;
   hotkeyScheme: HotkeyScheme;
   keyBindings: KeyBinding[];
   terminalThemeId: string;
@@ -172,6 +180,7 @@ interface VaultViewProps {
   // Optional: navigate to a specific section on mount or when changed
   navigateToSection?: VaultSection | null;
   onNavigateToSectionHandled?: () => void;
+  terminalSettings?: { keepaliveInterval: number; keepaliveCountMax: number };
 }
 
 const VaultViewInner: React.FC<VaultViewProps> = ({
@@ -186,7 +195,7 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
   shellHistory,
   connectionLogs,
   managedSources,
-  sessions,
+  sessionCount,
   hotkeyScheme,
   keyBindings,
   terminalThemeId,
@@ -222,6 +231,7 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
   showOnlyUngroupedHostsInRoot,
   navigateToSection,
   onNavigateToSectionHandled,
+  terminalSettings,
 }) => {
   const { t } = useI18n();
   const rootRef = useRef<HTMLDivElement>(null);
@@ -279,7 +289,11 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
     "grid",
   );
   const treeExpandedState = useTreeExpandedState(STORAGE_KEY_VAULT_HOSTS_TREE_EXPANDED);
-  const [sortMode, setSortMode] = useState<SortMode>("az");
+  const [sortMode, setSortMode] = useStoredString<SortMode>(
+    STORAGE_KEY_VAULT_HOSTS_SORT_MODE,
+    "az",
+    isSortMode,
+  );
   const [selectedTags, setSelectedTags] = useState<string[]>([]);
   const [selectedHostIds, setSelectedHostIds] = useState<Set<string>>(new Set());
   const [isMultiSelectMode, setIsMultiSelectMode] = useState(false);
@@ -1905,21 +1919,25 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
                 onChange={setSortMode}
                 className="h-10 w-10"
               />
-              <Button
-                variant={isMultiSelectMode ? "secondary" : "ghost"}
-                size="icon"
-                className="h-10 w-10"
-                onClick={() => {
-                  if (isMultiSelectMode) {
-                    clearHostSelection();
-                  } else {
-                    setIsMultiSelectMode(true);
-                  }
-                }}
-                title={t("vault.hosts.multiSelect")}
-              >
-                <CheckSquare size={16} />
-              </Button>
+              <Tooltip>
+                <TooltipTrigger asChild>
+                  <Button
+                    variant={isMultiSelectMode ? "secondary" : "ghost"}
+                    size="icon"
+                    className="h-10 w-10"
+                    onClick={() => {
+                      if (isMultiSelectMode) {
+                        clearHostSelection();
+                      } else {
+                        setIsMultiSelectMode(true);
+                      }
+                    }}
+                  >
+                    <CheckSquare size={16} />
+                  </Button>
+                </TooltipTrigger>
+                <TooltipContent>{t("vault.hosts.multiSelect")}</TooltipContent>
+              </Tooltip>
             </div>
             {/* New Host split button — collapses with an animation when the
                 host details / new-host aside panel is open, since the button
@@ -2227,6 +2245,12 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
                                 <ContextMenuItem onClick={() => handleEditHost(host)}>
                                   <Edit2 className="mr-2 h-4 w-4" /> {t('action.edit')}
                                 </ContextMenuItem>
+                                <ContextMenuItem onClick={() => handleDuplicateHost(host)}>
+                                  <Copy className="mr-2 h-4 w-4" /> {t('action.duplicate')}
+                                </ContextMenuItem>
+                                <ContextMenuItem onClick={() => handleCopyCredentials(host)}>
+                                  <ClipboardCopy className="mr-2 h-4 w-4" /> {t('vault.hosts.copyCredentials')}
+                                </ContextMenuItem>
                                 <ContextMenuItem onClick={() => toggleHostPinned(host.id)}>
                                   <Pin className="mr-2 h-4 w-4" /> {t('vault.hosts.unpin')}
                                 </ContextMenuItem>
@@ -2326,6 +2350,12 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
                                 <ContextMenuItem onClick={() => handleEditHost(host)}>
                                   <Edit2 className="mr-2 h-4 w-4" /> {t('action.edit')}
                                 </ContextMenuItem>
+                                <ContextMenuItem onClick={() => handleDuplicateHost(host)}>
+                                  <Copy className="mr-2 h-4 w-4" /> {t('action.duplicate')}
+                                </ContextMenuItem>
+                                <ContextMenuItem onClick={() => handleCopyCredentials(host)}>
+                                  <ClipboardCopy className="mr-2 h-4 w-4" /> {t('vault.hosts.copyCredentials')}
+                                </ContextMenuItem>
                                 <ContextMenuItem onClick={() => toggleHostPinned(host.id)}>
                                   <Pin className="mr-2 h-4 w-4" /> {host.pinned ? t('vault.hosts.unpin') : t('vault.hosts.pinToTop')}
                                 </ContextMenuItem>
@@ -2493,7 +2523,7 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
                         {t("vault.hosts.header.entries", { count: viewMode === "tree" ? treeViewHosts.length : visibleDisplayedHosts.length })}
                       </span>
                       <div className="bg-secondary/80 border border-border/70 rounded-md px-2 py-1 text-[11px]">
-                        {t("vault.hosts.header.live", { count: sessions.length })}
+                        {t("vault.hosts.header.live", { count: sessionCount })}
                       </div>
                     </div>
                   </div>
@@ -2946,6 +2976,7 @@ const VaultViewInner: React.FC<VaultViewProps> = ({
                 Array.from(new Set([...customGroups, groupPath])),
               )
             }
+            terminalSettings={terminalSettings}
           />
         )}
         {/* Always render KnownHostsManager but hide with CSS to prevent unmounting */}
@@ -3272,12 +3303,18 @@ export const vaultViewAreEqual = (
     prev.knownHosts === next.knownHosts &&
     prev.shellHistory === next.shellHistory &&
     prev.connectionLogs === next.connectionLogs &&
-    prev.sessions === next.sessions &&
+    prev.sessionCount === next.sessionCount &&
     prev.managedSources === next.managedSources &&
     prev.groupConfigs === next.groupConfigs &&
     prev.terminalThemeId === next.terminalThemeId &&
     prev.terminalFontSize === next.terminalFontSize &&
-    prev.navigateToSection === next.navigateToSection;
+    prev.navigateToSection === next.navigateToSection &&
+    // Only the keepalive fields of terminalSettings are forwarded to
+    // PortForwarding inside the vault, so compare them directly. Other
+    // terminal settings (fonts, themes, etc.) don't affect this subtree
+    // and we don't want to re-render for them.
+    prev.terminalSettings?.keepaliveInterval === next.terminalSettings?.keepaliveInterval &&
+    prev.terminalSettings?.keepaliveCountMax === next.terminalSettings?.keepaliveCountMax;
 
   return isEqual;
 };

components/ai-elements/message.tsx

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

components/ai-elements/prompt-input.tsx

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

components/ai-elements/streamdownCodeHighlighter.ts

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

components/ai-elements/tool-call.tsx

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

components/ai/AgentSelector.tsx

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

components/ai/ChatInput.tsx

@@ -22,6 +22,7 @@ import type { PromptInputStatus } from '../ai-elements/prompt-input';
 import { formatThinkingLabel } from '../../infrastructure/ai/types';
 import type { AgentModelPreset, AIPermissionMode, UploadedFile } from '../../infrastructure/ai/types';
 import { ScrollArea } from '../ui/scroll-area';
+import { Tooltip, TooltipContent, TooltipTrigger } from '../ui/tooltip';
 
 // Keep in sync with the popover's Tailwind max-width below.
 const MODEL_PICKER_MAX_WIDTH = 360;
@@ -415,24 +416,27 @@ const ChatInput: React.FC<ChatInputProps> = ({
             <div className="px-3 pt-3 pb-1.5">
               <div className="flex flex-wrap gap-2">
                 {selectedUserSkills.map((skill) => (
-                  <div
-                    key={skill.id}
-                    className={selectedSkillChipClassName}
-                    title={skill.description || skill.name || skill.slug}
-                  >
-                    <Package size={11} className="text-primary/72 shrink-0" />
-                    <span className="truncate max-w-[180px]">
-                      {skill.name && skill.name !== skill.slug ? skill.name : `/${skill.slug}`}
-                    </span>
-                    <button
-                      type="button"
-                      onClick={() => onRemoveUserSkill?.(skill.slug)}
-                      className="inline-flex h-4.5 w-4.5 items-center justify-center rounded-full text-foreground/42 hover:bg-primary/10 hover:text-foreground/72 transition-colors cursor-pointer"
-                      aria-label={`Remove skill ${skill.name || skill.slug}`}
-                    >
-                      <X size={9} />
-                    </button>
-                  </div>
+                  <Tooltip key={skill.id}>
+                    <TooltipTrigger asChild>
+                      <div
+                        className={selectedSkillChipClassName}
+                      >
+                        <Package size={11} className="text-primary/72 shrink-0" />
+                        <span className="truncate max-w-[180px]">
+                          {skill.name && skill.name !== skill.slug ? skill.name : `/${skill.slug}`}
+                        </span>
+                        <button
+                          type="button"
+                          onClick={() => onRemoveUserSkill?.(skill.slug)}
+                          className="inline-flex h-4.5 w-4.5 items-center justify-center rounded-full text-foreground/42 hover:bg-primary/10 hover:text-foreground/72 transition-colors cursor-pointer"
+                          aria-label={`Remove skill ${skill.name || skill.slug}`}
+                        >
+                          <X size={9} />
+                        </button>
+                      </div>
+                    </TooltipTrigger>
+                    <TooltipContent>{skill.description || skill.name || skill.slug}</TooltipContent>
+                  </Tooltip>
                 ))}
               </div>
             </div>
@@ -450,14 +454,18 @@ const ChatInput: React.FC<ChatInputProps> = ({
             ].filter(Boolean).join(' ')}
             maxLength={100000}
           />
-          <button
-            type="button"
-            onClick={() => setExpanded((e) => !e)}
-            className="absolute top-3.5 right-3 rounded-md p-1 text-muted-foreground/38 hover:text-muted-foreground/72 hover:bg-muted/25 transition-colors cursor-pointer"
-            title={expanded ? 'Collapse' : 'Expand'}
-          >
-            <Expand size={12} />
-          </button>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <button
+                type="button"
+                onClick={() => setExpanded((e) => !e)}
+                className="absolute top-3.5 right-3 rounded-md p-1 text-muted-foreground/38 hover:text-muted-foreground/72 hover:bg-muted/25 transition-colors cursor-pointer"
+              >
+                <Expand size={12} />
+              </button>
+            </TooltipTrigger>
+            <TooltipContent>{expanded ? t('ai.chat.collapse') : t('ai.chat.expand')}</TooltipContent>
+          </Tooltip>
         </div>
 
         {/* @ mention popover */}
@@ -557,25 +565,29 @@ const ChatInput: React.FC<ChatInputProps> = ({
         {/* Footer toolbar */}
         <PromptInputFooter className="gap-1.5 border-t-0 bg-transparent px-3 pb-2 pt-0">
           <PromptInputTools className="gap-1 flex-wrap">
-            <button
-              ref={attachBtnRef}
-              type="button"
-              onClick={() => {
-                if (!showAttachMenu) {
-                  const rect = attachBtnRef.current?.getBoundingClientRect();
-                  if (rect) setMenuPos({ left: rect.left, bottom: window.innerHeight - rect.top + 6 });
-                  setActiveMenu('attach');
-                } else {
-                  closeAllMenus();
-                }
-              }}
-              className={iconButtonClassName}
-              title="Attach"
-              aria-label="Attach file"
-              aria-expanded={showAttachMenu}
-            >
-              <Plus size={13} />
-            </button>
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <button
+                  ref={attachBtnRef}
+                  type="button"
+                  onClick={() => {
+                    if (!showAttachMenu) {
+                      const rect = attachBtnRef.current?.getBoundingClientRect();
+                      if (rect) setMenuPos({ left: rect.left, bottom: window.innerHeight - rect.top + 6 });
+                      setActiveMenu('attach');
+                    } else {
+                      closeAllMenus();
+                    }
+                  }}
+                  className={iconButtonClassName}
+                  aria-label={t('ai.chat.attach')}
+                  aria-expanded={showAttachMenu}
+                >
+                  <Plus size={13} />
+                </button>
+              </TooltipTrigger>
+              <TooltipContent>{t('ai.chat.attach')}</TooltipContent>
+            </Tooltip>
             {showAttachMenu && menuPos && createPortal(
               <>
                 <div className="fixed inset-0 z-[999]" onClick={closeAllMenus} />
@@ -743,33 +755,37 @@ const ChatInput: React.FC<ChatInputProps> = ({
             {/* Permission mode chip — only for Catty Agent */}
             {permissionMode && onPermissionModeChange && (
               <>
-                <button
-                  ref={permBtnRef}
-                  type="button"
-                  onClick={() => {
-                    if (!showPermPicker) {
-                      const rect = permBtnRef.current?.getBoundingClientRect();
-                      if (rect) setMenuPos({ left: rect.left, bottom: window.innerHeight - rect.top + 6 });
-                      setActiveMenu('perm');
-                    } else {
-                      closeAllMenus();
-                    }
-                  }}
-                  className={`${chipClassName} cursor-pointer hover:bg-muted/24 transition-colors`}
-                  title={t('ai.safety.permissionMode')}
-                  aria-label="Permission mode"
-                  aria-expanded={showPermPicker}
-                >
-                  {permissionMode === 'observer' && <Eye size={11} className="text-blue-400/70" />}
-                  {permissionMode === 'confirm' && <ShieldCheck size={11} className="text-yellow-400/70" />}
-                  {permissionMode === 'autonomous' && <Zap size={11} className="text-green-400/70" />}
-                  <span className="truncate max-w-[72px]">
-                    {permissionMode === 'observer' && t('ai.chat.permObserver')}
-                    {permissionMode === 'confirm' && t('ai.chat.permConfirm')}
-                    {permissionMode === 'autonomous' && t('ai.chat.permAuto')}
-                  </span>
-                  <ChevronDown size={9} className="text-muted-foreground/50" />
-                </button>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <button
+                      ref={permBtnRef}
+                      type="button"
+                      onClick={() => {
+                        if (!showPermPicker) {
+                          const rect = permBtnRef.current?.getBoundingClientRect();
+                          if (rect) setMenuPos({ left: rect.left, bottom: window.innerHeight - rect.top + 6 });
+                          setActiveMenu('perm');
+                        } else {
+                          closeAllMenus();
+                        }
+                      }}
+                      className={`${chipClassName} cursor-pointer hover:bg-muted/24 transition-colors`}
+                      aria-label={t('ai.safety.permissionMode')}
+                      aria-expanded={showPermPicker}
+                    >
+                      {permissionMode === 'observer' && <Eye size={11} className="text-blue-400/70" />}
+                      {permissionMode === 'confirm' && <ShieldCheck size={11} className="text-yellow-400/70" />}
+                      {permissionMode === 'autonomous' && <Zap size={11} className="text-green-400/70" />}
+                      <span className="truncate max-w-[72px]">
+                        {permissionMode === 'observer' && t('ai.chat.permObserver')}
+                        {permissionMode === 'confirm' && t('ai.chat.permConfirm')}
+                        {permissionMode === 'autonomous' && t('ai.chat.permAuto')}
+                      </span>
+                      <ChevronDown size={9} className="text-muted-foreground/50" />
+                    </button>
+                  </TooltipTrigger>
+                  <TooltipContent>{t('ai.safety.permissionMode')}</TooltipContent>
+                </Tooltip>
                 {showPermPicker && menuPos && createPortal(
                   <>
                     <div className="fixed inset-0 z-[999]" onClick={closeAllMenus} />

components/ai/ConversationExport.tsx

@@ -15,6 +15,7 @@ import {
   DropdownContent,
   DropdownTrigger,
 } from '../ui/dropdown';
+import { Tooltip, TooltipContent, TooltipTrigger } from '../ui/tooltip';
 
 interface ConversationExportProps {
   session: AISession | null;
@@ -45,32 +46,36 @@ const ConversationExport: React.FC<ConversationExportProps> = ({
 
   return (
     <Dropdown>
-      <DropdownTrigger asChild>
-        <Button
-          variant="ghost"
-          size="icon"
-          className={className ?? 'h-7 w-7 rounded-md text-muted-foreground/62 hover:bg-white/[0.05] hover:text-foreground'}
-          disabled={!hasMessages}
-          title={t('ai.chat.exportConversation')}
-        >
-          <Download size={14} />
-        </Button>
-      </DropdownTrigger>
+      <Tooltip>
+        <TooltipTrigger asChild>
+          <DropdownTrigger asChild>
+            <Button
+              variant="ghost"
+              size="icon"
+              className={className ?? 'h-7 w-7 rounded-md text-muted-foreground/70 hover:bg-accent/60 hover:text-foreground'}
+              disabled={!hasMessages}
+            >
+              <Download size={14} />
+            </Button>
+          </DropdownTrigger>
+        </TooltipTrigger>
+        <TooltipContent>{t('ai.chat.exportConversation')}</TooltipContent>
+      </Tooltip>
       <DropdownContent
         align="end"
         sideOffset={6}
-        className="w-40 rounded-xl border border-border/45 bg-[#111111]/98 p-1.5 text-foreground shadow-[0_20px_48px_rgba(0,0,0,0.48)] supports-[backdrop-filter]:bg-[#111111]/92 supports-[backdrop-filter]:backdrop-blur-sm"
+        className="w-40 rounded-xl border border-border/60 bg-popover p-1.5 text-popover-foreground shadow-lg supports-[backdrop-filter]:bg-popover/95 supports-[backdrop-filter]:backdrop-blur-sm"
       >
-        <div className="px-2 py-1 text-[10px] font-medium uppercase tracking-[0.16em] text-muted-foreground/48">
+        <div className="px-2 py-1 text-[10px] font-medium uppercase tracking-[0.16em] text-muted-foreground/70">
           {t('ai.chat.exportAs')}
         </div>
         {EXPORT_OPTIONS.map(({ format, labelKey, icon: Icon }) => (
           <button
             key={format}
             onClick={() => handleExport(format)}
-            className="w-full flex items-center gap-2 px-2 py-1.5 text-[13px] rounded-lg transition-colors cursor-pointer hover:bg-white/[0.04]"
+            className="w-full flex items-center gap-2 px-2 py-1.5 text-[13px] rounded-lg transition-colors cursor-pointer hover:bg-accent hover:text-accent-foreground"
           >
-            <Icon size={13} className="shrink-0 text-muted-foreground/70" />
+            <Icon size={13} className="shrink-0 text-muted-foreground" />
             <span>{t(labelKey)}</span>
           </button>
         ))}

components/ai/hooks/useAIChatStreaming.ts

@@ -143,6 +143,7 @@ export interface PanelBridge extends NetcattyBridge {
     cwd?: string,
     providerId?: string,
     chatSessionId?: string,
+    agentEnv?: Record<string, string>,
   ) => Promise<{ ok: boolean; models?: Array<{ id: string; name: string; description?: string; thinkingLevels?: string[] }>; currentModelId?: string | null; error?: string }>;
   aiAcpCleanup?: (chatSessionId: string) => Promise<{ ok: boolean }>;
   aiUserSkillsGetStatus?: () => Promise<{

components/ai/managedAgentState.test.ts

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

components/ai/streamdownCodeHighlighter.test.ts

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

components/editor/TextEditorPane.test.tsx

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

components/editor/TextEditorPane.tsx

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

components/keychain/IdentityPanel.tsx

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

components/keychain/index.ts

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

components/keychain/utils.ts

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

components/port-forwarding/NewFormPanel.tsx

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

components/port-forwarding/RuleCard.tsx

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

components/port-forwarding/index.ts

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

components/port-forwarding/utils.tsx

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

components/settings/TerminalCjkFontSelect.tsx

@@ -0,0 +1,153 @@
+import React, { useMemo, useSyncExternalStore } from 'react';
+import * as SelectPrimitive from '@radix-ui/react-select';
+import { Check, ChevronDown, ChevronUp } from 'lucide-react';
+import { cn } from '../../lib/utils';
+import { useI18n } from '../../application/i18n/I18nProvider';
+import {
+  getFontAvailabilityVersion,
+  isFontInstalled,
+  subscribeFontAvailability,
+} from '../../lib/fontAvailability';
+
+const AUTO_SENTINEL = '__auto__';
+
+interface CjkFontOption {
+  value: string;
+  /** i18n key looked up via t(). Use '' for the Auto sentinel. */
+  labelKey: string;
+}
+
+// Only true monospace CJK fonts. Proportional CJK fonts (PingFang SC,
+// Microsoft YaHei UI, Hiragino Sans GB) render at non-2x widths and
+// break terminal grid alignment — they are deliberately excluded here
+// even though they are the OS defaults.
+const OPTIONS: CjkFontOption[] = [
+  { value: '',                       labelKey: 'settings.terminal.font.cjk.option.auto' },
+  { value: 'Sarasa Mono SC',         labelKey: 'settings.terminal.font.cjk.option.sarasaSC' },
+  { value: 'Sarasa Mono TC',         labelKey: 'settings.terminal.font.cjk.option.sarasaTC' },
+  { value: 'Maple Mono CN',          labelKey: 'settings.terminal.font.cjk.option.mapleCN' },
+  { value: 'Source Han Mono SC',     labelKey: 'settings.terminal.font.cjk.option.sourceHan' },
+  { value: 'Noto Sans Mono CJK SC',  labelKey: 'settings.terminal.font.cjk.option.notoCJK' },
+  { value: 'LXGW WenKai Mono',       labelKey: 'settings.terminal.font.cjk.option.lxgwWenkai' },
+  { value: 'SimSun',                 labelKey: 'settings.terminal.font.cjk.option.simSun' },
+];
+
+interface Props {
+  value: string;
+  onChange: (next: string) => void;
+  className?: string;
+  disabled?: boolean;
+}
+
+export const TerminalCjkFontSelect: React.FC<Props> = ({
+  value,
+  onChange,
+  className,
+  disabled,
+}) => {
+  const { t } = useI18n();
+  const matchedOption = OPTIONS.find((o) => o.value === value);
+  const radixValue = value === '' ? AUTO_SENTINEL : (matchedOption?.value ?? value);
+  const triggerLabel = matchedOption
+    ? t(matchedOption.labelKey)
+    : value
+      ? t('settings.terminal.font.cjk.option.legacy', { font: value })
+      : value;
+
+  // Subscribe to font availability so the filter re-evaluates after the
+  // Local Font Access API populates the authoritative install set
+  // asynchronously (otherwise the dropdown would show stale availability
+  // until the user manually changed `value`).
+  const availabilityVersion = useSyncExternalStore(
+    subscribeFontAvailability,
+    getFontAvailabilityVersion,
+    getFontAvailabilityVersion,
+  );
+
+  // "Auto" is always present; concrete fonts only appear when installed;
+  // the currently-selected value (if any) is also always shown so users
+  // can see and clear their setting even on a machine without the font.
+  // Legacy selections (e.g. "PingFang SC" saved before we dropped
+  // proportional fonts) are appended as a synthetic option with a
+  // "not recommended" label so the user can see them and re-pick.
+  const visibleOptions = useMemo(() => {
+    // The version is read here only so eslint-react-hooks sees it
+    // used; in practice we depend on it to invalidate this memo when
+    // setSystemFamilies bumps it (isFontInstalled below reads module
+    // state, so we need an explicit signal).
+    void availabilityVersion;
+    const filtered: Array<{ value: string; label: string }> = OPTIONS.filter(
+      (opt) =>
+        opt.value === '' ||
+        opt.value === value ||
+        isFontInstalled(opt.value),
+    ).map((opt) => ({ value: opt.value, label: t(opt.labelKey) }));
+    if (value && !OPTIONS.some((o) => o.value === value)) {
+      filtered.push({
+        value,
+        label: t('settings.terminal.font.cjk.option.legacy', { font: value }),
+      });
+    }
+    return filtered;
+  }, [value, availabilityVersion, t]);
+
+  return (
+    <SelectPrimitive.Root
+      value={radixValue}
+      onValueChange={(next) => onChange(next === AUTO_SENTINEL ? '' : next)}
+      disabled={disabled}
+    >
+      <SelectPrimitive.Trigger
+        className={cn(
+          'flex h-9 items-center justify-between rounded-md border border-input bg-background px-3 py-1 text-sm shadow-sm transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50 [&>span]:line-clamp-1',
+          className,
+        )}
+      >
+        <SelectPrimitive.Value>
+          <span style={{ fontFamily: value ? `"${value}", monospace` : undefined }}>
+            {triggerLabel}
+          </span>
+        </SelectPrimitive.Value>
+        <SelectPrimitive.Icon asChild>
+          <ChevronDown className="ml-2 h-4 w-4 opacity-50" />
+        </SelectPrimitive.Icon>
+      </SelectPrimitive.Trigger>
+      <SelectPrimitive.Portal>
+        <SelectPrimitive.Content
+          className="z-[200000] max-h-80 min-w-[14rem] overflow-hidden rounded-md border bg-popover text-popover-foreground shadow-md data-[side=bottom]:translate-y-1 data-[side=left]:-translate-x-1 data-[side=right]:translate-x-1 data-[side=top]:-translate-y-1"
+          position="popper"
+          sideOffset={4}
+        >
+          <SelectPrimitive.ScrollUpButton className="flex cursor-default items-center justify-center py-1">
+            <ChevronUp className="h-4 w-4" />
+          </SelectPrimitive.ScrollUpButton>
+          <SelectPrimitive.Viewport className="p-1 h-[var(--radix-select-trigger-height)] w-full min-w-[var(--radix-select-trigger-width)]">
+            {visibleOptions.map((opt) => (
+              <SelectPrimitive.Item
+                key={opt.value || AUTO_SENTINEL}
+                value={opt.value || AUTO_SENTINEL}
+                className="relative flex w-full cursor-default select-none items-center rounded-sm py-1.5 pl-8 pr-2 text-sm outline-none focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50"
+              >
+                <span className="absolute left-2 flex h-3.5 w-3.5 items-center justify-center">
+                  <SelectPrimitive.ItemIndicator>
+                    <Check className="h-4 w-4" />
+                  </SelectPrimitive.ItemIndicator>
+                </span>
+                <SelectPrimitive.ItemText>
+                  <span style={{ fontFamily: opt.value ? `"${opt.value}", monospace` : undefined }}>
+                    {opt.label}
+                  </span>
+                </SelectPrimitive.ItemText>
+              </SelectPrimitive.Item>
+            ))}
+          </SelectPrimitive.Viewport>
+          <SelectPrimitive.ScrollDownButton className="flex cursor-default items-center justify-center py-1">
+            <ChevronDown className="h-4 w-4" />
+          </SelectPrimitive.ScrollDownButton>
+        </SelectPrimitive.Content>
+      </SelectPrimitive.Portal>
+    </SelectPrimitive.Root>
+  );
+};
+
+export default TerminalCjkFontSelect;

components/settings/TerminalFontSelect.tsx

@@ -1,7 +1,14 @@
-import React from 'react';
+import React, { useMemo, useSyncExternalStore } from 'react';
 import * as SelectPrimitive from '@radix-ui/react-select';
 import { Check, ChevronDown, ChevronUp } from 'lucide-react';
 import { cn } from '../../lib/utils';
+import {
+  extractPrimaryFamily,
+  getFontAvailabilityVersion,
+  hasAuthoritativeData,
+  isFontInstalled,
+  subscribeFontAvailability,
+} from '../../lib/fontAvailability';
 import type { TerminalFont } from '../../infrastructure/config/fonts';
 
 interface TerminalFontSelectProps {
@@ -21,6 +28,37 @@ export const TerminalFontSelect: React.FC<TerminalFontSelectProps> = ({
 }) => {
   const selectedFont = fonts.find(f => f.id === value);
 
+  // Subscribe to font availability so the filter re-evaluates after the
+  // Local Font Access API populates the authoritative install set
+  // asynchronously, even if the `fonts` prop ref hasn't changed.
+  const availabilityVersion = useSyncExternalStore(
+    subscribeFontAvailability,
+    getFontAvailabilityVersion,
+    getFontAvailabilityVersion,
+  );
+
+  // Hide fonts that aren't actually rendered on this machine so users
+  // don't pick a font and then see no visible change. The currently
+  // selected font is always shown so the user can read their setting.
+  //
+  // When the Local Font Access API has populated authoritative data,
+  // trust it: an empty or near-empty result means the user really has
+  // few monospace fonts (Layer 3 still gives at least one option via
+  // bundled Sarasa Mono SC). When canvas-only fallback is in play,
+  // we keep a safety net at length>=1 to avoid an empty dropdown if
+  // detection misfires.
+  const visibleFonts = useMemo(() => {
+    // Referenced so eslint-react-hooks sees the dep used; the real
+    // purpose is to invalidate this memo when setSystemFamilies bumps
+    // the version (isFontInstalled reads module state).
+    void availabilityVersion;
+    const filtered = fonts.filter(
+      (f) => f.id === value || isFontInstalled(extractPrimaryFamily(f.family)),
+    );
+    if (hasAuthoritativeData()) return filtered;
+    return filtered.length >= 1 ? filtered : fonts;
+  }, [fonts, value, availabilityVersion]);
+
   return (
     <SelectPrimitive.Root value={value} onValueChange={onChange} disabled={disabled}>
       <SelectPrimitive.Trigger
@@ -48,7 +86,7 @@ export const TerminalFontSelect: React.FC<TerminalFontSelectProps> = ({
             <ChevronUp className="h-4 w-4" />
           </SelectPrimitive.ScrollUpButton>
           <SelectPrimitive.Viewport className="p-1 h-[var(--radix-select-trigger-height)] w-full min-w-[var(--radix-select-trigger-width)]">
-            {fonts.map((font) => (
+            {visibleFonts.map((font) => (
               <SelectPrimitive.Item
                 key={font.id}
                 value={font.id}

components/settings/tabs/SettingsAppearanceTab.tsx

@@ -7,6 +7,7 @@ import { SUPPORTED_UI_LOCALES } from "../../../infrastructure/config/i18n";
 import { cn } from "../../../lib/utils";
 import { SectionHeader, SettingsTabContent, SettingRow, Toggle, Select } from "../settings-ui";
 import { FontSelect } from "../FontSelect";
+import { Tooltip, TooltipContent, TooltipTrigger } from "../../ui/tooltip";
 
 export default function SettingsAppearanceTab(props: {
   theme: "dark" | "light" | "system";
@@ -122,20 +123,23 @@ export default function SettingsAppearanceTab(props: {
   ) => (
     <div className="flex flex-wrap gap-2 justify-end">
       {options.map((preset) => (
-        <button
-          key={preset.id}
-          onClick={() => onChange(preset.id)}
-          className={cn(
-            "w-6 h-6 rounded-full flex items-center justify-center transition-all shadow-sm border border-border/70",
-            value === preset.id
-              ? "ring-2 ring-offset-2 ring-foreground scale-110"
-              : "hover:scale-105",
-          )}
-          style={getHslStyle(preset.tokens.background)}
-          title={preset.name}
-        >
-          {value === preset.id && <Check className="text-white drop-shadow-md" size={10} />}
-        </button>
+        <Tooltip key={preset.id}>
+          <TooltipTrigger asChild>
+            <button
+              onClick={() => onChange(preset.id)}
+              className={cn(
+                "w-6 h-6 rounded-full flex items-center justify-center transition-all shadow-sm border border-border/70",
+                value === preset.id
+                  ? "ring-2 ring-offset-2 ring-foreground scale-110"
+                  : "hover:scale-105",
+              )}
+              style={getHslStyle(preset.tokens.background)}
+            >
+              {value === preset.id && <Check className="text-white drop-shadow-md" size={10} />}
+            </button>
+          </TooltipTrigger>
+          <TooltipContent>{preset.name}</TooltipContent>
+        </Tooltip>
       ))}
     </div>
   );
@@ -212,42 +216,49 @@ export default function SettingsAppearanceTab(props: {
             <div className="text-sm font-medium">{t("settings.appearance.accentColor.custom")}</div>
             <div className="flex flex-wrap gap-2">
               {ACCENT_COLORS.map((c) => (
-                <button
-                  key={c.name}
-                  onClick={() => setCustomAccent(c.value)}
-                  className={cn(
-                    "w-6 h-6 rounded-full flex items-center justify-center transition-all shadow-sm",
-                    customAccent === c.value
-                      ? "ring-2 ring-offset-2 ring-foreground scale-110"
-                      : "hover:scale-105",
-                  )}
-                  style={getHslStyle(c.value)}
-                  title={c.name}
-                >
-                  {customAccent === c.value && <Check className="text-white drop-shadow-md" size={10} />}
-                </button>
+                <Tooltip key={c.name}>
+                  <TooltipTrigger asChild>
+                    <button
+                      onClick={() => setCustomAccent(c.value)}
+                      className={cn(
+                        "w-6 h-6 rounded-full flex items-center justify-center transition-all shadow-sm",
+                        customAccent === c.value
+                          ? "ring-2 ring-offset-2 ring-foreground scale-110"
+                          : "hover:scale-105",
+                      )}
+                      style={getHslStyle(c.value)}
+                    >
+                      {customAccent === c.value && <Check className="text-white drop-shadow-md" size={10} />}
+                    </button>
+                  </TooltipTrigger>
+                  <TooltipContent>{c.name}</TooltipContent>
+                </Tooltip>
               ))}
-              <label
-                className={cn(
-                  "w-6 h-6 rounded-full flex items-center justify-center transition-all shadow-sm cursor-pointer",
-                  "bg-gradient-to-br from-pink-500 via-purple-500 to-blue-500",
-                  !ACCENT_COLORS.some((c) => c.value === customAccent)
-                    ? "ring-2 ring-offset-2 ring-foreground scale-110"
-                    : "hover:scale-105",
-                )}
-                title={t("settings.appearance.customColor")}
-              >
-                <input
-                  type="color"
-                  className="sr-only"
-                  onChange={(e) => setCustomAccent(hexToHsl(e.target.value))}
-                />
-                {!ACCENT_COLORS.some((c) => c.value === customAccent) ? (
-                  <Check className="text-white drop-shadow-md" size={10} />
-                ) : (
-                  <Palette size={12} className="text-white drop-shadow-md" />
-                )}
-              </label>
+              <Tooltip>
+                <TooltipTrigger asChild>
+                  <label
+                    className={cn(
+                      "w-6 h-6 rounded-full flex items-center justify-center transition-all shadow-sm cursor-pointer",
+                      "bg-gradient-to-br from-pink-500 via-purple-500 to-blue-500",
+                      !ACCENT_COLORS.some((c) => c.value === customAccent)
+                        ? "ring-2 ring-offset-2 ring-foreground scale-110"
+                        : "hover:scale-105",
+                    )}
+                  >
+                    <input
+                      type="color"
+                      className="sr-only"
+                      onChange={(e) => setCustomAccent(hexToHsl(e.target.value))}
+                    />
+                    {!ACCENT_COLORS.some((c) => c.value === customAccent) ? (
+                      <Check className="text-white drop-shadow-md" size={10} />
+                    ) : (
+                      <Palette size={12} className="text-white drop-shadow-md" />
+                    )}
+                  </label>
+                </TooltipTrigger>
+                <TooltipContent>{t("settings.appearance.customColor")}</TooltipContent>
+              </Tooltip>
             </div>
           </div>
         )}

components/settings/tabs/SettingsFileAssociationsTab.tsx

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

components/settings/tabs/SettingsShortcutsTab.tsx

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

components/settings/tabs/SettingsSyncTab.tsx

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

components/settings/tabs/SettingsSystemTab.tsx

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

components/settings/tabs/SettingsTerminalTab.tsx

@@ -19,9 +19,12 @@ import { Button } from "../../ui/button";
 import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle } from "../../ui/dialog";
 import { Input } from "../../ui/input";
 import { Label } from "../../ui/label";
+import { Textarea } from "../../ui/textarea";
+import { Select as ShadcnSelect, SelectContent, SelectItem, SelectTrigger, SelectValue } from "../../ui/select";
 import { SectionHeader, Select, SettingsTabContent, SettingRow, Toggle } from "../settings-ui";
 import { ThemeSelectModal } from "../ThemeSelectModal";
 import { TerminalFontSelect } from "../TerminalFontSelect";
+import { TerminalCjkFontSelect } from "../TerminalCjkFontSelect";
 import { CustomThemeModal } from "../../terminal/CustomThemeModal";
 import type { TerminalTheme } from "../../../domain/models";
 
@@ -32,21 +35,25 @@ const AddCustomRuleDialog: React.FC<{
   open: boolean;
   onOpenChange: (open: boolean) => void;
   editRule?: KeywordHighlightRule | null;
+  isBuiltIn?: boolean;
   onAdd: (rule: KeywordHighlightRule) => void;
-}> = ({ open, onOpenChange, editRule, onAdd }) => {
+}> = ({ open, onOpenChange, editRule, isBuiltIn = false, onAdd }) => {
   const { t } = useI18n();
   const [label, setLabel] = useState('');
-  const [pattern, setPattern] = useState('');
+  // Multi-line text: one regex pattern per line. Built-in rules typically
+  // ship multiple patterns (e.g. several spellings of "error"), and the user
+  // is allowed to add as many as they like.
+  const [patternsText, setPatternsText] = useState('');
   const [color, setColor] = useState(DEFAULT_NEW_RULE_COLOR);
   const [patternError, setPatternError] = useState<string | null>(null);
 
-  const reset = () => { setLabel(''); setPattern(''); setColor(DEFAULT_NEW_RULE_COLOR); setPatternError(null); };
+  const reset = () => { setLabel(''); setPatternsText(''); setColor(DEFAULT_NEW_RULE_COLOR); setPatternError(null); };
 
   // Populate form when editing
   useEffect(() => {
     if (open && editRule) {
       setLabel(editRule.label);
-      setPattern(editRule.patterns[0] || '');
+      setPatternsText(editRule.patterns.join('\n'));
       setColor(editRule.color);
       setPatternError(null);
     } else if (!open) {
@@ -55,25 +62,43 @@ const AddCustomRuleDialog: React.FC<{
   }, [open, editRule]);
 
   const handleSubmit = () => {
-    if (!label.trim() || !pattern.trim()) return;
-    try { new RegExp(pattern, 'gi'); } catch {
-      setPatternError(t('settings.terminal.keywordHighlight.invalidPattern'));
-      return;
+    if (!label.trim()) return;
+    const patterns = patternsText
+      .split('\n')
+      .map((line) => line.trim())
+      .filter((line) => line.length > 0);
+    if (patterns.length === 0) return;
+    for (const p of patterns) {
+      try { new RegExp(p, 'gi'); } catch {
+        setPatternError(t('settings.terminal.keywordHighlight.invalidPattern'));
+        return;
+      }
     }
-    // When editing, replace only the first pattern and keep any additional ones
-    const patterns = editRule
-      ? [pattern, ...editRule.patterns.slice(1)]
-      : [pattern];
-    onAdd({ id: editRule?.id ?? crypto.randomUUID(), label: label.trim(), patterns, color, enabled: editRule?.enabled ?? true });
+    onAdd({
+      id: editRule?.id ?? crypto.randomUUID(),
+      label: label.trim(),
+      patterns,
+      color,
+      enabled: editRule?.enabled ?? true,
+      // Editing a built-in rule flips it into "user-customized" mode so the
+      // normalizer keeps the user's patterns across restarts.
+      customized: isBuiltIn ? true : editRule?.customized,
+    });
     reset();
     onOpenChange(false);
   };
 
+  const dialogTitleKey = editRule
+    ? (isBuiltIn
+      ? 'settings.terminal.keywordHighlight.editBuiltIn'
+      : 'settings.terminal.keywordHighlight.editCustom')
+    : 'settings.terminal.keywordHighlight.addCustom';
+
   return (
     <Dialog open={open} onOpenChange={(v) => { if (!v) reset(); onOpenChange(v); }}>
-      <DialogContent className="sm:max-w-[400px]">
+      <DialogContent className="sm:max-w-[440px]">
         <DialogHeader>
-          <DialogTitle>{editRule ? t('settings.terminal.keywordHighlight.editCustom') : t('settings.terminal.keywordHighlight.addCustom')}</DialogTitle>
+          <DialogTitle>{t(dialogTitleKey)}</DialogTitle>
         </DialogHeader>
         <div className="space-y-3 py-2">
           <div className="space-y-1.5">
@@ -93,16 +118,19 @@ const AddCustomRuleDialog: React.FC<{
           </div>
           <div className="space-y-1.5">
             <Label className="text-xs">{t('settings.terminal.keywordHighlight.patternField')}</Label>
-            <Input
+            <Textarea
               placeholder={t('settings.terminal.keywordHighlight.patternPlaceholder')}
-              value={pattern}
-              onChange={(e) => { setPattern(e.target.value); if (patternError) setPatternError(null); }}
-              onKeyDown={(e) => { if (e.key === 'Enter') handleSubmit(); }}
-              className={cn("font-mono", patternError && "border-destructive")}
+              value={patternsText}
+              onChange={(e) => { setPatternsText(e.target.value); if (patternError) setPatternError(null); }}
+              rows={Math.max(3, Math.min(10, patternsText.split('\n').length + 1))}
+              className={cn("font-mono text-xs", patternError && "border-destructive")}
             />
+            <p className="text-[11px] text-muted-foreground">
+              {t('settings.terminal.keywordHighlight.patternHint')}
+            </p>
             {patternError && <div className="text-xs text-destructive">{patternError}</div>}
           </div>
-          {label.trim() && pattern.trim() && !patternError && (
+          {label.trim() && patternsText.trim() && !patternError && (
             <div className="flex items-center gap-2 p-2 rounded-md bg-muted/50">
               <span className="text-xs text-muted-foreground">{t('settings.terminal.keywordHighlight.preview')}:</span>
               <span className="text-sm font-medium" style={{ color }}>{label}</span>
@@ -111,7 +139,7 @@ const AddCustomRuleDialog: React.FC<{
         </div>
         <DialogFooter>
           <Button variant="outline" onClick={() => { reset(); onOpenChange(false); }}>{t('common.cancel')}</Button>
-          <Button onClick={handleSubmit} disabled={!label.trim() || !pattern.trim()}>{editRule ? t('common.save') : t('common.add')}</Button>
+          <Button onClick={handleSubmit} disabled={!label.trim() || !patternsText.trim()}>{editRule ? t('common.save') : t('common.add')}</Button>
         </DialogFooter>
       </DialogContent>
     </Dialog>
@@ -131,26 +159,43 @@ const KeywordHighlightRulesEditor: React.FC<{
   return (
     <div className="space-y-2.5">
       {rules.map((rule) => {
-        const custom = !isBuiltIn(rule.id);
+        const builtIn = isBuiltIn(rule.id);
+        const customized = builtIn && rule.customized;
         return (
           <div key={rule.id} className="flex items-center gap-2 group">
             <div className="flex-1 min-w-0 flex items-center gap-1.5">
               <span className={cn("text-sm truncate", !rule.enabled && "text-muted-foreground line-through")} style={rule.enabled ? { color: rule.color } : undefined}>
                 {rule.label}
               </span>
-              {custom && (
-                <>
-                  <Pencil
-                    size={10}
-                    className="flex-shrink-0 opacity-0 group-hover:opacity-100 transition-opacity text-muted-foreground cursor-pointer"
-                    onClick={() => { setEditingRule(rule); setAddDialogOpen(true); }}
-                  />
-                  <Trash2
-                    size={10}
-                    className="flex-shrink-0 opacity-0 group-hover:opacity-100 transition-opacity text-muted-foreground cursor-pointer"
-                    onClick={() => onChange(rules.filter((r) => r.id !== rule.id))}
-                  />
-                </>
+              <Pencil
+                size={10}
+                className="flex-shrink-0 opacity-0 group-hover:opacity-100 transition-opacity text-muted-foreground cursor-pointer hover:text-foreground"
+                onClick={() => { setEditingRule(rule); setAddDialogOpen(true); }}
+              />
+              {!builtIn && (
+                <Trash2
+                  size={10}
+                  className="flex-shrink-0 opacity-0 group-hover:opacity-100 transition-opacity text-muted-foreground cursor-pointer hover:text-destructive"
+                  onClick={() => onChange(rules.filter((r) => r.id !== rule.id))}
+                />
+              )}
+              {customized && (
+                <RotateCcw
+                  size={10}
+                  className="flex-shrink-0 opacity-0 group-hover:opacity-100 transition-opacity text-muted-foreground cursor-pointer hover:text-foreground"
+                  aria-label={t('settings.terminal.keywordHighlight.resetBuiltIn')}
+                  onClick={() => {
+                    // Drop the user's customizations and restore the shipped
+                    // defaults for label/patterns. Color stays whatever the
+                    // user picked (color is the only built-in property they
+                    // can edit without flipping `customized`).
+                    const def = DEFAULT_KEYWORD_HIGHLIGHT_RULES.find((r) => r.id === rule.id);
+                    if (!def) return;
+                    onChange(rules.map((r) => r.id === rule.id
+                      ? { ...def, color: r.color, enabled: r.enabled, customized: false }
+                      : r));
+                  }}
+                />
               )}
             </div>
             <label className="relative flex-shrink-0">
@@ -184,14 +229,18 @@ const KeywordHighlightRulesEditor: React.FC<{
           size="sm"
           className="flex-1 text-muted-foreground hover:text-foreground"
           onClick={() => {
+            // Restore every built-in rule back to shipped defaults
+            // (label/patterns/color), drop customizations, and keep the user's
+            // custom rules untouched.
             onChange(rules.map((rule) => {
               const def = DEFAULT_KEYWORD_HIGHLIGHT_RULES.find((r) => r.id === rule.id);
-              return def ? { ...rule, color: def.color } : rule;
+              if (!def) return rule;
+              return { ...def, enabled: rule.enabled, customized: false };
             }));
           }}
         >
           <RotateCcw size={14} className="mr-1.5" />
-          {t("settings.terminal.keywordHighlight.resetColors")}
+          {t("settings.terminal.keywordHighlight.resetDefaults")}
         </Button>
       </div>
 
@@ -199,6 +248,7 @@ const KeywordHighlightRulesEditor: React.FC<{
         open={addDialogOpen}
         onOpenChange={(v) => { setAddDialogOpen(v); if (!v) setEditingRule(null); }}
         editRule={editingRule}
+        isBuiltIn={editingRule ? isBuiltIn(editingRule.id) : false}
         onAdd={(rule) => {
           if (editingRule) {
             onChange(rules.map((r) => r.id === editingRule.id ? rule : r));
@@ -615,6 +665,17 @@ export default function SettingsTerminalTab(props: {
           />
         </SettingRow>
 
+        <SettingRow
+          label={t("settings.terminal.font.cjk")}
+          description={t("settings.terminal.font.cjk.desc")}
+        >
+          <TerminalCjkFontSelect
+            value={terminalSettings.fallbackFont ?? ""}
+            onChange={(next) => updateTerminalSetting("fallbackFont", next)}
+            className="w-48"
+          />
+        </SettingRow>
+
         <SettingRow
           label={t("settings.terminal.font.size")}
           description={t("settings.terminal.font.size.desc")}
@@ -829,6 +890,13 @@ export default function SettingsTerminalTab(props: {
           <Toggle checked={terminalSettings.preserveSelectionOnInput ?? false} onChange={(v) => updateTerminalSetting("preserveSelectionOnInput", v)} />
         </SettingRow>
 
+        <SettingRow
+          label={t("settings.terminal.behavior.forcePromptNewLine")}
+          description={t("settings.terminal.behavior.forcePromptNewLine.desc")}
+        >
+          <Toggle checked={terminalSettings.forcePromptNewLine ?? false} onChange={(v) => updateTerminalSetting("forcePromptNewLine", v)} />
+        </SettingRow>
+
         <SettingRow
           label={t("settings.terminal.behavior.osc52Clipboard")}
           description={t("settings.terminal.behavior.osc52Clipboard.desc")}
@@ -948,35 +1016,41 @@ export default function SettingsTerminalTab(props: {
           description={t("settings.terminal.localShell.shell.desc")}
         >
           <div className="flex flex-col gap-1 items-end">
-            <select
-              className="h-9 w-48 rounded-md border border-input bg-background px-3 text-sm"
+            <ShadcnSelect
               value={
                 showCustomShellInput
                   ? "__custom__"
-                  : terminalSettings.localShell || ""
+                  : (terminalSettings.localShell || "__default__")
               }
-              onChange={(e) => {
-                const value = e.target.value;
+              onValueChange={(value) => {
                 if (value === "__custom__") {
                   setCustomShellDraft(terminalSettings.localShell || "");
                   setCustomShellModalOpen(true);
+                } else if (value === "__default__") {
+                  setShowCustomShellInput(false);
+                  updateTerminalSetting("localShell", "");
                 } else {
                   setShowCustomShellInput(false);
                   updateTerminalSetting("localShell", value);
                 }
               }}
             >
-              <option value="">
-                {t("settings.terminal.localShell.shell.default")}
-                {defaultShell ? ` (${defaultShell.split(/[/\\]/).pop()})` : ""}
-              </option>
-              {discoveredShells.map((shell) => (
-                <option key={shell.id} value={shell.id}>
-                  {shell.name}
-                </option>
-              ))}
-              <option value="__custom__">{t("settings.terminal.localShell.shell.custom")}</option>
-            </select>
+              <SelectTrigger className="h-9 w-48 text-sm">
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="__default__">
+                  {t("settings.terminal.localShell.shell.default")}
+                  {defaultShell ? ` (${defaultShell.split(/[/\\]/).pop()})` : ""}
+                </SelectItem>
+                {discoveredShells.map((shell) => (
+                  <SelectItem key={shell.id} value={shell.id}>
+                    {shell.name}
+                  </SelectItem>
+                ))}
+                <SelectItem value="__custom__">{t("settings.terminal.localShell.shell.custom")}</SelectItem>
+              </SelectContent>
+            </ShadcnSelect>
             {showCustomShellInput && (
               <span className="text-xs text-muted-foreground truncate max-w-48">
                 {terminalSettings.localShell}
@@ -1034,6 +1108,24 @@ export default function SettingsTerminalTab(props: {
             className="w-24"
           />
         </SettingRow>
+        <SettingRow
+          label={t("settings.terminal.connection.keepaliveCountMax")}
+          description={t("settings.terminal.connection.keepaliveCountMax.desc")}
+        >
+          <Input
+            type="number"
+            min={1}
+            max={100}
+            value={terminalSettings.keepaliveCountMax}
+            onChange={(e) => {
+              const val = parseInt(e.target.value) || 1;
+              if (val >= 1 && val <= 100) {
+                updateTerminalSetting("keepaliveCountMax", val);
+              }
+            }}
+            className="w-24"
+          />
+        </SettingRow>
         <SettingRow
           label={t("settings.terminal.connection.x11Display")}
           description={t("settings.terminal.connection.x11Display.desc")}

components/settings/tabs/ai/ModelSelector.tsx

@@ -3,6 +3,7 @@ import { Check, ChevronDown, RefreshCw } from "lucide-react";
 import type { AIProviderId } from "../../../../infrastructure/ai/types";
 import { useI18n } from "../../../../application/i18n/I18nProvider";
 import { Button } from "../../../ui/button";
+import { Tooltip, TooltipContent, TooltipTrigger } from "../../../ui/tooltip";
 import { cn } from "../../../../lib/utils";
 import type { FetchedModel } from "./types";
 import { getFetchBridge } from "./types";
@@ -120,16 +121,20 @@ export const ModelSelector: React.FC<{
           )}
         </div>
         {canFetch && (
-          <Button
-            variant="outline"
-            size="sm"
-            onClick={() => { setHasFetched(false); void fetchModels(); }}
-            disabled={isLoading}
-            className="shrink-0 px-2"
-            title={t('ai.providers.refreshModels')}
-          >
-            <RefreshCw size={14} className={isLoading ? "animate-spin" : ""} />
-          </Button>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <Button
+                variant="outline"
+                size="sm"
+                onClick={() => { setHasFetched(false); void fetchModels(); }}
+                disabled={isLoading}
+                className="shrink-0 px-2"
+              >
+                <RefreshCw size={14} className={isLoading ? "animate-spin" : ""} />
+              </Button>
+            </TooltipTrigger>
+            <TooltipContent>{t('ai.providers.refreshModels')}</TooltipContent>
+          </Tooltip>
         )}
       </div>
 

components/settings/tabs/ai/ProviderCard.tsx

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

components/settings/tabs/ai/index.ts

@@ -1,9 +0,0 @@
-export { ProviderIconBadge } from "./ProviderIconBadge";
-export { ModelSelector } from "./ModelSelector";
-export { ProviderConfigForm } from "./ProviderConfigForm";
-export { ProviderCard } from "./ProviderCard";
-export { AddProviderDropdown } from "./AddProviderDropdown";
-export { CodexConnectionCard } from "./CodexConnectionCard";
-export { ClaudeCodeCard } from "./ClaudeCodeCard";
-export { CopilotCliCard } from "./CopilotCliCard";
-export { SafetySettings } from "./SafetySettings";

components/settings/tabs/ai/managedAgentState.ts

@@ -47,11 +47,15 @@ export function buildManagedAgentState(
 
   const existingManaged = managedAgents.find((agent) => agent.id === managedId);
   const defaults = AGENT_DEFAULTS[agentKey];
+  const managedEnv = agentKey === "claude"
+    ? { ...(existingManaged?.env ?? {}), CLAUDE_CODE_EXECUTABLE: pathInfo.path }
+    : existingManaged?.env;
   const nextManagedAgent: ExternalAgentConfig = {
     ...existingManaged,
     ...defaults,
     id: managedId,
     command: pathInfo.path,
+    ...(managedEnv ? { env: managedEnv } : {}),
     enabled: managedAgents.length === 0 ? true : managedAgents.some((agent) => agent.enabled),
   };
 

components/sftp/SftpBreadcrumb.tsx

@@ -2,9 +2,11 @@
  * SFTP Breadcrumb navigation component
  */
 
-import { ChevronRight, Home, MoreHorizontal } from 'lucide-react';
-import React, { memo, useMemo } from 'react';
+import { ChevronDown, ChevronRight, Home, MoreHorizontal } from 'lucide-react';
+import React, { memo, useCallback, useMemo, useState } from 'react';
 import { useI18n } from '../../application/i18n/I18nProvider';
+import { Dropdown, DropdownContent, DropdownTrigger } from '../ui/dropdown';
+import { Tooltip, TooltipContent, TooltipTrigger } from '../ui/tooltip';
 import { cn } from '../../lib/utils';
 
 interface SftpBreadcrumbProps {
@@ -13,16 +15,31 @@ interface SftpBreadcrumbProps {
     onHome: () => void;
     /** Maximum number of visible path segments before truncation (default: 4) */
     maxVisibleParts?: number;
+    isLocal?: boolean;
+    onListDrives?: () => Promise<string[]>;
 }
 
-const SftpBreadcrumbInner: React.FC<SftpBreadcrumbProps> = ({ 
-    path, 
-    onNavigate, 
+const SftpBreadcrumbInner: React.FC<SftpBreadcrumbProps> = ({
+    path,
+    onNavigate,
     onHome,
-    maxVisibleParts = 4 
+    maxVisibleParts = 4,
+    isLocal,
+    onListDrives,
 }) => {
     const { t } = useI18n();
 
+    const [drives, setDrives] = useState<string[]>([]);
+    const [driveDropdownOpen, setDriveDropdownOpen] = useState(false);
+
+    const handleDriveDropdownOpen = useCallback(async (open: boolean) => {
+        setDriveDropdownOpen(open);
+        if (open && onListDrives) {
+            const result = await onListDrives();
+            setDrives(result);
+        }
+    }, [onListDrives]);
+
     // Handle both Windows (C:\path) and Unix (/path) style paths
     const isWindowsPath = /^[A-Za-z]:/.test(path);
     const separator = isWindowsPath ? /[\\/]/ : /\//;
@@ -70,52 +87,93 @@ const SftpBreadcrumbInner: React.FC<SftpBreadcrumbProps> = ({
         };
     }, [parts, maxVisibleParts]);
 
+    const showDriveDropdown = isWindowsPath && isLocal && !!onListDrives;
+
     return (
-        <div 
-            className="flex items-center gap-1 text-xs text-muted-foreground overflow-hidden"
-            title={path}
-        >
-            <button
-                onClick={onHome}
-                className="hover:text-foreground p-1 rounded hover:bg-secondary/60 shrink-0"
-                title={t("sftp.goHome")}
-            >
-                <Home size={12} />
-            </button>
-            <ChevronRight size={12} className="opacity-40 shrink-0" />
-            {visibleParts.map(({ part, originalIndex }, displayIdx) => {
-                const partPath = buildPath(originalIndex);
-                const isLast = originalIndex === parts.length - 1;
-                const showEllipsisBefore = needsTruncation && displayIdx === 1;
-                
-                return (
-                    <React.Fragment key={partPath}>
-                        {showEllipsisBefore && (
-                            <>
-                                <span
-                                    className="px-1 py-0.5 shrink-0 flex items-center text-muted-foreground cursor-default"
-                                    title={`${t("sftp.showHiddenPaths")}: ${hiddenParts.map(h => h.part).join(' > ')}`}
-                                >
-                                    <MoreHorizontal size={14} />
-                                </span>
-                                <ChevronRight size={12} className="opacity-40 shrink-0" />
-                            </>
-                        )}
-                        <button
-                            onClick={() => onNavigate(partPath)}
-                            className={cn(
-                                "hover:text-foreground px-1 py-0.5 rounded hover:bg-secondary/60 truncate max-w-[120px] shrink-0",
-                                isLast && "text-foreground font-medium"
-                            )}
-                            title={part}
-                        >
-                            {part}
-                        </button>
-                        {!isLast && <ChevronRight size={12} className="opacity-40 shrink-0" />}
-                    </React.Fragment>
-                );
-            })}
-        </div>
+        <Tooltip>
+            <TooltipTrigger asChild>
+                <div className="flex items-center gap-1 text-xs text-muted-foreground overflow-hidden cursor-default">
+                    <Tooltip>
+                        <TooltipTrigger asChild>
+                            <button
+                                onClick={onHome}
+                                className="hover:text-foreground p-1 rounded hover:bg-secondary/60 shrink-0"
+                            >
+                                <Home size={12} />
+                            </button>
+                        </TooltipTrigger>
+                        <TooltipContent>{t("sftp.goHome")}</TooltipContent>
+                    </Tooltip>
+                    <ChevronRight size={12} className="opacity-40 shrink-0" />
+                    {visibleParts.map(({ part, originalIndex }, displayIdx) => {
+                        const partPath = buildPath(originalIndex);
+                        const isLast = originalIndex === parts.length - 1;
+                        const showEllipsisBefore = needsTruncation && displayIdx === 1;
+
+                        return (
+                            <React.Fragment key={partPath}>
+                                {showEllipsisBefore && (
+                                    <>
+                                        <Tooltip>
+                                            <TooltipTrigger asChild>
+                                                <span className="px-1 py-0.5 shrink-0 flex items-center text-muted-foreground cursor-default">
+                                                    <MoreHorizontal size={14} />
+                                                </span>
+                                            </TooltipTrigger>
+                                            <TooltipContent>
+                                                {`${t("sftp.showHiddenPaths")}: ${hiddenParts.map(h => h.part).join(' > ')}`}
+                                            </TooltipContent>
+                                        </Tooltip>
+                                        <ChevronRight size={12} className="opacity-40 shrink-0" />
+                                    </>
+                                )}
+                                {originalIndex === 0 && showDriveDropdown ? (
+                                    <Dropdown open={driveDropdownOpen} onOpenChange={handleDriveDropdownOpen}>
+                                        <DropdownTrigger asChild>
+                                            <button className="hover:text-foreground px-1 py-0.5 rounded hover:bg-secondary/60 shrink-0 flex items-center gap-0.5">
+                                                {part}
+                                                <ChevronDown size={10} className="opacity-60" />
+                                            </button>
+                                        </DropdownTrigger>
+                                        <DropdownContent align="start" className="w-16 p-1">
+                                            {drives.map(drive => (
+                                                <button
+                                                    key={drive}
+                                                    onClick={() => { onNavigate(drive + '\\'); setDriveDropdownOpen(false); }}
+                                                    className={cn(
+                                                        "w-full text-left px-2 py-1 text-xs rounded hover:bg-secondary/60",
+                                                        drive === part && "bg-secondary font-medium"
+                                                    )}
+                                                >
+                                                    {drive}
+                                                </button>
+                                            ))}
+                                        </DropdownContent>
+                                    </Dropdown>
+                                ) : (
+                                    <Tooltip>
+                                        <TooltipTrigger asChild>
+                                            <button
+                                                onClick={() => onNavigate(partPath)}
+                                                className={cn(
+                                                    "hover:text-foreground px-1 py-0.5 rounded hover:bg-secondary/60 truncate max-w-[120px] shrink-0",
+                                                    isLast && "text-foreground font-medium"
+                                                )}
+                                            >
+                                                {part}
+                                            </button>
+                                        </TooltipTrigger>
+                                        <TooltipContent>{part}</TooltipContent>
+                                    </Tooltip>
+                                )}
+                                {!isLast && <ChevronRight size={12} className="opacity-40 shrink-0" />}
+                            </React.Fragment>
+                        );
+                    })}
+                </div>
+            </TooltipTrigger>
+            <TooltipContent>{path}</TooltipContent>
+        </Tooltip>
     );
 };
 

components/sftp/SftpContext.tsx

@@ -60,6 +60,7 @@ export interface SftpPaneCallbacks {
     // External folder upload from native directory picker.
     onUploadExternalFolder?: (targetPath?: string) => Promise<void>;
     onListDirectory: (path: string) => Promise<SftpFileEntry[]>;
+    onListDrives: () => Promise<string[]>;
 }
 
 export interface SftpDragCallbacks {
@@ -103,12 +104,6 @@ export const useActiveTabId = (side: "left" | "right"): string | null => {
     );
 };
 
-// Hook to check if a specific pane is active (for CSS control)
-export const useIsPaneActive = (side: "left" | "right", paneId: string): boolean => {
-    const activeTabId = useActiveTabId(side);
-    return activeTabId === paneId || (activeTabId === null && paneId !== null);
-};
-
 export interface SftpContextValue {
     // Hosts list for connection picker
     hosts: Host[];

components/sftp/SftpFileRow.tsx

@@ -4,6 +4,7 @@
 
 import { Folder, Link } from 'lucide-react';
 import React, { memo, useCallback } from 'react';
+import { Tooltip, TooltipContent, TooltipTrigger } from '../ui/tooltip';
 import { cn } from '../../lib/utils';
 import { SftpFileEntry } from '../../types';
 import { buildSftpColumnTemplate, ColumnWidths, formatBytes, formatDate, getFileIcon, isNavigableDirectory } from './utils';
@@ -106,17 +107,21 @@ const SftpFileRowInner: React.FC<SftpFileRowProps> = ({
                         />
                     )}
                 </div>
-                <span
-                    className={cn(
-                        "truncate",
-                        entry.type === 'symlink' && "italic pr-1",
-                        isSelectionVisible && "font-medium",
-                    )}
-                    title={entry.name}
-                >
-                    {entry.name}
-                    {entry.type === 'symlink' && <span className="sr-only"> (symbolic link)</span>}
-                </span>
+                <Tooltip>
+                    <TooltipTrigger asChild>
+                        <span
+                            className={cn(
+                                "truncate cursor-default",
+                                entry.type === 'symlink' && "italic pr-1",
+                                isSelectionVisible && "font-medium",
+                            )}
+                        >
+                            {entry.name}
+                            {entry.type === 'symlink' && <span className="sr-only"> (symbolic link)</span>}
+                        </span>
+                    </TooltipTrigger>
+                    <TooltipContent>{entry.name}</TooltipContent>
+                </Tooltip>
             </div>
             <span className={cn("text-xs truncate", isSelectionVisible ? "text-accent-foreground/85" : "text-muted-foreground")}>{modifiedLabel}</span>
             <span className={cn("text-xs truncate text-right", isSelectionVisible ? "text-accent-foreground/85" : "text-muted-foreground")}>

components/sftp/SftpOverlays.tsx

@@ -3,10 +3,13 @@ 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 type { TransferTask } from "../../types";
 import FileOpenerDialog from "../FileOpenerDialog";
 import TextEditorModal from "../TextEditorModal";
 import type { TextEditorModalSnapshot } from "../TextEditorModal";
-import { SftpConflictDialog, SftpHostPicker, SftpPermissionsDialog } from "./index";
+import { SftpConflictDialog } from "./SftpConflictDialog";
+import { SftpHostPicker } from "./SftpHostPicker";
+import { SftpPermissionsDialog } from "./SftpPermissionsDialog";
 import { SftpTransferQueue } from "./SftpTransferQueue";
 
 type SftpState = ReturnType<typeof useSftpState>;
@@ -16,6 +19,10 @@ interface SftpOverlaysProps {
   sftp: SftpState;
   visibleTransfers: SftpState["transfers"];
   showTransferQueue?: boolean;
+  canRevealTransferTarget?: (task: TransferTask) => boolean;
+  onRevealTransferTarget?: (task: TransferTask) => void | Promise<void>;
+  canCopyTransferTargetPath?: (task: TransferTask) => boolean;
+  onCopyTransferTargetPath?: (task: TransferTask) => void | Promise<void>;
   showHostPickerLeft: boolean;
   showHostPickerRight: boolean;
   hostSearchLeft: string;
@@ -54,6 +61,10 @@ export const SftpOverlays: React.FC<SftpOverlaysProps> = React.memo(({
   sftp,
   visibleTransfers,
   showTransferQueue = true,
+  canRevealTransferTarget,
+  onRevealTransferTarget,
+  canCopyTransferTargetPath,
+  onCopyTransferTargetPath,
   showHostPickerLeft,
   showHostPickerRight,
   hostSearchLeft,
@@ -111,7 +122,15 @@ export const SftpOverlays: React.FC<SftpOverlaysProps> = React.memo(({
       />
 
       {showTransferQueue && (
-        <SftpTransferQueue sftp={sftp} visibleTransfers={visibleTransfers} allTransfers={sftp.transfers} />
+        <SftpTransferQueue
+          sftp={sftp}
+          visibleTransfers={visibleTransfers}
+          allTransfers={sftp.transfers}
+          canRevealTransferTarget={canRevealTransferTarget}
+          onRevealTransferTarget={onRevealTransferTarget}
+          canCopyTransferTargetPath={canCopyTransferTargetPath}
+          onCopyTransferTargetPath={onCopyTransferTargetPath}
+        />
       )}
 
       <SftpConflictDialog

components/sftp/SftpPaneDialogs.tsx

@@ -12,7 +12,7 @@ import {
 import { Input } from "../ui/input";
 import { Label } from "../ui/label";
 import { getFileName, getParentPath } from "../../application/state/sftp/utils";
-import { SftpHostPicker } from "./index";
+import { SftpHostPicker } from "./SftpHostPicker";
 import type { Host } from "../../types";
 
 interface SftpPaneDialogsProps {

components/sftp/SftpPaneFileList.tsx

@@ -14,10 +14,9 @@ import type { SftpFileEntry } from "../../types";
 import type { SftpPane } from "../../application/state/sftp/types";
 import type { SftpTransferSource } from "./SftpContext";
 import { sftpListOrderStore } from "./hooks/useSftpListOrderStore";
-import { buildSftpColumnTemplate, type ColumnWidths, type SortField, type SortOrder } from "./utils";
-import { isNavigableDirectory } from "./index";
+import { buildSftpColumnTemplate, isNavigableDirectory, type ColumnWidths, type SortField, type SortOrder } from "./utils";
 import { isKnownBinaryFile } from "../../lib/sftpFileUtils";
-import { SftpFileRow } from "./index";
+import { SftpFileRow } from "./SftpFileRow";
 import {
   getSftpListUploadFilesTargetPath,
   getSftpUploadFilesLabelKey,

components/sftp/SftpPaneToolbar.tsx

@@ -6,7 +6,7 @@ import { Popover, PopoverClose, PopoverContent, PopoverTrigger } from "../ui/pop
 import { Dropdown, DropdownContent, DropdownTrigger } from "../ui/dropdown";
 import { cn } from "../../lib/utils";
 import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from "../ui/tooltip";
-import { SftpBreadcrumb } from "./index";
+import { SftpBreadcrumb } from "./SftpBreadcrumb";
 import type { SftpFilenameEncoding } from "../../types";
 import type { SftpPane } from "../../application/state/sftp/types";
 import type { SftpBookmark } from "../../domain/models";
@@ -55,6 +55,7 @@ interface SftpPaneToolbarProps {
   onGoToTerminalCwd?: () => void;
   viewMode: 'list' | 'tree';
   onSetViewMode: (mode: 'list' | 'tree') => void;
+  onListDrives?: () => Promise<string[]>;
 }
 
 // Prioritize breadcrumb path display. 6 action buttons need ~156px,
@@ -105,6 +106,7 @@ export const SftpPaneToolbar: React.FC<SftpPaneToolbarProps> = React.memo(({
   onGoToTerminalCwd,
   viewMode,
   onSetViewMode,
+  onListDrives,
 }) => {
   const outerRef = useRef<HTMLDivElement>(null);
   const [collapsed, setCollapsed] = useState(false);
@@ -475,20 +477,26 @@ export const SftpPaneToolbar: React.FC<SftpPaneToolbarProps> = React.memo(({
             )}
           </div>
         ) : (
-          <div
-            className="flex-1 min-w-0 cursor-text hover:bg-secondary/50 rounded px-1 transition-colors"
-            onDoubleClick={handlePathDoubleClick}
-            title={t("sftp.path.doubleClickToEdit")}
-          >
-            <SftpBreadcrumb
-              path={displayPath}
-              onNavigate={onNavigateTo}
-              onHome={() =>
-                pane.connection?.homeDir &&
-                onNavigateTo(pane.connection.homeDir)
-              }
-            />
-          </div>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <div
+                className="flex-1 min-w-0 cursor-text hover:bg-secondary/50 rounded px-1 transition-colors"
+                onDoubleClick={handlePathDoubleClick}
+              >
+                <SftpBreadcrumb
+                  path={displayPath}
+                  onNavigate={onNavigateTo}
+                  onHome={() =>
+                    pane.connection?.homeDir &&
+                    onNavigateTo(pane.connection.homeDir)
+                  }
+                  isLocal={!isRemote}
+                  onListDrives={onListDrives}
+                />
+              </div>
+            </TooltipTrigger>
+            <TooltipContent>{t("sftp.path.doubleClickToEdit")}</TooltipContent>
+          </Tooltip>
         )}
 
         {/* Bookmark button with dropdown */}
@@ -551,15 +559,19 @@ export const SftpPaneToolbar: React.FC<SftpPaneToolbarProps> = React.memo(({
                       {bm.global && (
                         <Globe size={10} className="shrink-0 text-primary" />
                       )}
-                      <button
-                        type="button"
-                        className="flex-1 text-left text-xs truncate font-mono"
-                        onClick={() => onNavigateToBookmark(bm.path)}
-                        title={bm.path}
-                      >
-                        {bm.label}
-                        <span className="ml-1.5 text-muted-foreground text-[10px]">{bm.path}</span>
-                      </button>
+                      <Tooltip>
+                        <TooltipTrigger asChild>
+                          <button
+                            type="button"
+                            className="flex-1 text-left text-xs truncate font-mono"
+                            onClick={() => onNavigateToBookmark(bm.path)}
+                          >
+                            {bm.label}
+                            <span className="ml-1.5 text-muted-foreground text-[10px]">{bm.path}</span>
+                          </button>
+                        </TooltipTrigger>
+                        <TooltipContent>{bm.path}</TooltipContent>
+                      </Tooltip>
                       <Button
                         variant="ghost"
                         size="icon"