chore(ui): remove code orphaned by the shortcut and plan-action cleanups

The eslint pass in release:prepare caught what the package-scoped checks
did not: Header's handleOpenContextPlan and servicesTabs lost their last
callers with the removed shortcuts, the settings-synced listeners no
longer need the DesktopSettings import, and the store's openContextPlan
action itself went unused once the plan surface was reachable only through
the digit switcher and the rail.

packages/ui/src/components/layout/Header.tsx

@@ -434,7 +434,6 @@ export const Header: React.FC = () => {
   const { t } = useI18n();
   const isSidebarOpen = useUIStore((state) => state.isSidebarOpen);
   const openContextOverview = useUIStore((state) => state.openContextOverview);
-  const openContextPlan = useUIStore((state) => state.openContextPlan);
   const closeContextPanel = useUIStore((state) => state.closeContextPanel);
   const shortcutOverrides = useUIStore((state) => state.shortcutOverrides);
   const sessionTabsEnabled = useUIStore((state) => state.sessionTabsEnabled);
@@ -1263,21 +1262,6 @@ export const Header: React.FC = () => {
   const isContextPanelActive = activeContextMode === 'context';
 
 
-  const handleOpenContextPlan = React.useCallback(() => {
-    const directory = normalize(openDirectory || '');
-    if (!directory) {
-      return;
-    }
-
-    const panelState = useUIStore.getState().contextPanelByDirectory[directory];
-    if (getActiveContextMode(panelState) === 'plan') {
-      closeContextPanel(directory);
-      return;
-    }
-
-    openContextPlan(directory);
-  }, [closeContextPanel, openContextPlan, openDirectory]);
-
 
   const desktopHeaderIconButtonClass = DESKTOP_HEADER_ICON_BUTTON_CLASS;
   // Left padding the header needs to clear the OS window controls (macOS
@@ -1448,16 +1432,6 @@ export const Header: React.FC = () => {
     return formatShortcutForDisplay(getEffectiveShortcutCombo(actionId, shortcutOverrides));
   }, [shortcutOverrides]);
 
-  // Desktop keeps instances only: quota and MCP now live in the work-status
-  // panel, which reports them per session rather than per window. The mobile
-  // menu below is untouched — it has no panel to defer to.
-  const servicesTabs = React.useMemo(() => {
-    const base: Array<{ value: 'instance' | 'usage' | 'mcp'; label: string; icon: React.ReactNode }> = [];
-    if (isDesktopApp) {
-      base.push({ value: 'instance', label: t('layout.services.instance'), icon: <Icon name="server" className="h-3.5 w-3.5" /> });
-    }
-    return base;
-  }, [isDesktopApp, t]);
 
 
   useKeybinds({

packages/ui/src/contexts/ThemeSystemContext.tsx

@@ -7,7 +7,6 @@ import React, {
 } from 'react';
 import { flushSync } from 'react-dom';
 import type { Theme, ThemeMode } from '@/types/theme';
-import type { DesktopSettings } from '@/lib/desktop';
 import { isDesktopLocalOriginActive, isDesktopShell as detectDesktopShell, isVSCodeRuntime } from '@/lib/desktop';
 import { setDesktopWindowTheme } from '@/lib/desktopNative';
 import { CSSVariableGenerator } from '@/lib/theme/cssGenerator';

packages/ui/src/stores/useOpenInAppsStore.ts

@@ -1,6 +1,6 @@
 import { create } from 'zustand';
 
-import { fetchDesktopInstalledApps, isDesktopLocalOriginActive, isDesktopShell, type DesktopSettings, type InstalledDesktopAppInfo } from '@/lib/desktop';
+import { fetchDesktopInstalledApps, isDesktopLocalOriginActive, isDesktopShell, type InstalledDesktopAppInfo } from '@/lib/desktop';
 import { OPEN_IN_APPS, DEFAULT_OPEN_IN_APP_ID, OPEN_IN_ALWAYS_AVAILABLE_APP_IDS, getOpenInAppById, getPlatformOpenInApp, type OpenInApp } from '@/lib/openInApps';
 import { type SettingsSyncedDetail, updateDesktopSettings } from '@/lib/persistence';
 

packages/ui/src/stores/useUIStore.ts

@@ -819,7 +819,6 @@ interface UIStore {
   openContextFile: (directory: string, filePath: string) => void;
   openContextFileAtLine: (directory: string, filePath: string, line: number, column?: number) => void;
   openContextOverview: (directory: string) => void;
-  openContextPlan: (directory: string) => void;
   openContextPreview: (directory: string, url: string) => void;
   openContextBrowser: (directory: string, url?: string, options?: { reveal?: boolean }) => void;
   openNewContextBrowserTab: (directory: string) => void;
@@ -1321,15 +1320,6 @@ export const useUIStore = create<UIStore>()(
           get().openContextPanelTab(normalizedDirectory, { mode: 'context' });
         },
 
-        openContextPlan: (directory) => {
-          const normalizedDirectory = normalizeDirectoryPath((directory || '').trim());
-          if (!normalizedDirectory) {
-            return;
-          }
-
-          get().openContextPanelTab(normalizedDirectory, { mode: 'plan' });
-        },
-
         openContextPreview: (directory, url) => {
           const normalizedDirectory = normalizeDirectoryPath((directory || '').trim());
           const normalizedUrl = (url || '').trim();