feat(ui): add collapsible persistent sidebar

src/components/common/CommandPalette.tsx

@@ -17,6 +17,7 @@ import {
   ChevronRight,
   Settings,
   Laptop,
+  PanelLeft,
 } from 'lucide-react'
 import { useTabStore } from '../../stores/tabStore'
 import { useSessionStore, useSnippetStore, useCommandPaletteStore, type Session } from '../../stores'
@@ -108,6 +109,15 @@ export function CommandPalette({
         icon: <Settings size={16} />,
         action: () => onOpenSettings(),
       },
+      {
+        id: 'cmd:toggle-sidebar',
+        type: 'command',
+        label: '折叠/展开侧栏',
+        description: '隐藏侧栏以专心操作终端',
+        shortcut: 'Ctrl+B',
+        icon: <PanelLeft size={16} />,
+        action: () => window.dispatchEvent(new CustomEvent('opsxshell:toggle-sidebar')),
+      },
       {
         id: 'cmd:new-tab',
         type: 'command',