v1.3.0: 主题系统+代码分割+设置重构+命令片段库+命令面板+连接面板 | 19 files +2141/-257 | tsc零错误 构建成功

ROADMAP.md

@@ -40,10 +40,12 @@ v1.5.0 安全升级  ─── 1 周 ──→ 安全 55→85, 代码 80→85
 
 ---
 
-## v1.2.0 体验升级 (2 周) — 🚧 进行中
+## v1.2.0 体验升级 (2 周) — ✅ 已完成
 
 > **目标**: 快捷键补全、视觉打磨、交互优化，接近 Termius 体验水平
 
+### ✅ 全部完成 (提交: caba5f4)
+
 ### 🟡 P1 — 重要
 
 | # | 任务 | 类型 | 预计 | 验收标准 |
@@ -71,18 +73,21 @@ v1.5.0 安全升级  ─── 1 周 ──→ 安全 55→85, 代码 80→85
 
 ---
 
-## v1.3.0 测试覆盖 (2 周)
+## v1.3.0 专业体验 (2 周) — 🚧 进行中
 
-> **目标**: 核心模块测试覆盖率从 10% 提升到 50%
+> **目标**: 主题系统、命令面板、Snippets、UI 打磨，达到专业级体验
 
-详细计划见 [TDD_PLAN.md](./TDD_PLAN.md)
+### 🟡 P1 — 重要
 
-| # | 模块 | 当前覆盖 | 目标覆盖 | 预计 |
-|---|------|----------|----------|------|
-| 1 | stores (tab/connection/settings/session) | 0% | 70% | 3天 |
-| 2 | hooks (useTerminal/useSFTP/useConnection) | 0% | 50% | 3天 |
-| 3 | electron services (ssh/sftp/database/crypto) | 0% | 60% | 4天 |
-| 4 | 组件渲染测试 (WelcomeView/TabBar/SFTPView) | 5% | 40% | 3天 |
+| # | 任务 | 类型 | 预计 | 验收标准 |
+|---|------|------|------|----------|
+| 1 | 主题系统 Dark/Light/System | 新增 | 3天 | CSS 变量驱动，跟随系统自动切换，设置页实时预览 |
+| 2 | Vite 代码分割 | 优化 | 1天 | manualChunks 拆分 xterm/react/lucide，消除 500KB warning |
+| 3 | 设置面板视觉重构 | 重构 | 2天 | 专业设置页布局 + 快捷键自定义 Tab + 版本号自动读取 |
+| 4 | 命令片段库 Snippets | 新增 | 3天 | 创建/编辑/删除/搜索命令片段，快捷键插入到终端 |
+| 5 | 全局命令面板 | 新增 | 2天 | Ctrl+Shift+P 快速搜索操作/会话/命令片段 |
+| 6 | 连接状态面板 | 新增 | 2天 | 实时监控连接、流量统计、延迟显示、重连按钮 |
+| 7 | UI 打磨 — 全局细节优化 | 完善 | 2天 | 过渡动画统一、微交互（hover/active 反馈）、视觉一致性 |
 
 ---
 

src/App.tsx

@@ -3,15 +3,18 @@ import Sidebar from './components/Sidebar'
 import TabBar from './components/TabBar'
 import TabContent from './components/TabContent'
 import StatusBar from './components/StatusBar'
+import ConnectionPanel from './components/ConnectionPanel'
 import SessionDialog from './components/SessionDialog'
 import QuickConnectDialog from './components/QuickConnectDialog'
+import { CommandPalette } from './components/common/CommandPalette'
 import { useTabStore } from './stores/tabStore'
-import { useSessionStore, type Session } from './stores'
+import { useSessionStore, useCommandPaletteStore, type Session } from './stores'
 import { createLogger } from './utils/logger'
 import { useToast } from './hooks/useToast'
 import { ToastContainer } from './components/common/ToastContainer'
 import { useKeyboardShortcuts } from './hooks/useKeyboardShortcuts'
 import { useIsMobile } from './hooks/useMediaQuery'
+import { useTheme } from './hooks/useTheme'
 
 const logger = createLogger('App')
 
@@ -21,7 +24,11 @@ function App() {
   const [editSession, setEditSession] = useState<Session | null>(null)
   const { activeTabId } = useTabStore()
   const { sessions } = useSessionStore()
+  const { close: closeCommandPalette } = useCommandPaletteStore()
   const { toasts, toast, removeToast } = useToast()
+  useTheme()
+
+  // Keyboard shortcuts (Ctrl+Shift+P now handled internally via commandPaletteStore)
   useKeyboardShortcuts()
 
   // Responsive: detect mobile
@@ -49,6 +56,12 @@ function App() {
     setMobileSidebarOpen(false)
   }, [])
 
+  // Open settings tab
+  const handleOpenSettings = useCallback(() => {
+    const { addTab } = useTabStore.getState()
+    addTab({ title: '设置', type: 'settings' })
+  }, [])
+
   // 导出会话
   const handleExportSessions = async () => {
     try {
@@ -305,6 +318,9 @@ function App() {
       {/* Status bar */}
       <StatusBar />
       
+      {/* Connection management panel (self-contained via connectionPanelStore) */}
+      <ConnectionPanel />
+      
       {/* Dialogs */}
       <SessionDialog
         isOpen={isSessionDialogOpen}
@@ -320,6 +336,28 @@ function App() {
         onClose={() => setIsQuickConnectOpen(false)}
       />
 
+      {/* Command Palette — isOpen/close managed via commandPaletteStore */}
+      <CommandPalette
+        onNewSession={() => {
+          closeCommandPalette()
+          setEditSession(null)
+          setIsSessionDialogOpen(true)
+        }}
+        onQuickConnect={() => {
+          closeCommandPalette()
+          setIsQuickConnectOpen(true)
+        }}
+        onOpenSettings={() => {
+          closeCommandPalette()
+          handleOpenSettings()
+        }}
+        onEditSession={(session) => {
+          closeCommandPalette()
+          setEditSession(session)
+          setIsSessionDialogOpen(true)
+        }}
+      />
+
       {/* Toast Notifications */}
       <ToastContainer toasts={toasts} onRemove={removeToast} />
     </div>

src/components/ConnectionPanel.tsx

@@ -0,0 +1,335 @@
+/**
+ * ConnectionPanel - 连接状态管理面板
+ *
+ * 右侧滑出面板，实时监控所有连接状态、流量统计、支持重连/断开操作。
+ */
+
+import { useState, useCallback, useMemo } from 'react'
+import {
+  Wifi,
+  WifiOff,
+  RefreshCw,
+  X,
+  Clock,
+  HardDrive,
+  Activity,
+} from 'lucide-react'
+import { useConnectionStore } from '../stores/connection'
+import { usePoolStore } from '../stores/connection/poolStore'
+import { useConnectionPanelStore } from '../stores/connectionPanelStore'
+import type { PooledConnection, ConnectionState } from '../stores/connection/types'
+import EmptyState from './common/EmptyState'
+
+// ============== Helpers ==============
+
+/** 格式化字节 */
+function formatBytes(bytes: number): string {
+  if (bytes === 0) return '0 B'
+  const units = ['B', 'KB', 'MB', 'GB']
+  const k = 1024
+  const i = Math.floor(Math.log(bytes) / Math.log(k))
+  const value = bytes / Math.pow(k, i)
+  return `${value.toFixed(i === 0 ? 0 : 1)} ${units[i]}`
+}
+
+/** 格式化连接时长 (ms → readable) */
+function formatDuration(ms: number): string {
+  const seconds = Math.floor(ms / 1000)
+  if (seconds < 60) return `${seconds}s`
+  const minutes = Math.floor(seconds / 60)
+  if (minutes < 60) return `${minutes}m ${seconds % 60}s`
+  const hours = Math.floor(minutes / 60)
+  return `${hours}h ${minutes % 60}m`
+}
+
+// ============== Status Dot ==============
+
+interface StatusDotProps {
+  state: ConnectionState
+}
+
+const STATUS_DOT_COLORS: Record<ConnectionState, string> = {
+  connected: 'bg-green-400',
+  connecting: 'bg-yellow-400 animate-pulse',
+  background: 'bg-green-400 opacity-60',
+  suspended: 'bg-gray-400',
+  error: 'bg-red-400',
+  disconnected: 'bg-gray-500',
+  reconnecting: 'bg-yellow-400 animate-pulse',
+}
+
+function StatusDot({ state }: StatusDotProps) {
+  return (
+    <span
+      className={`inline-block w-2 h-2 rounded-full ${STATUS_DOT_COLORS[state] ?? 'bg-gray-500'}`}
+    />
+  )
+}
+
+// ============== Status Label ==============
+
+const STATUS_LABELS: Record<ConnectionState, string> = {
+  connected: '已连接',
+  connecting: '连接中',
+  background: '后台',
+  suspended: '已挂起',
+  error: '错误',
+  disconnected: '已断开',
+  reconnecting: '重连中',
+}
+
+// ============== Connection Card ==============
+
+interface ConnectionCardProps {
+  conn: PooledConnection
+  onReconnect: (id: string) => void
+  onDisconnect: (id: string) => void
+  reconnectingId: string | null
+}
+
+function ConnectionCard({ conn, onReconnect, onDisconnect, reconnectingId }: ConnectionCardProps) {
+  const isReconnecting = reconnectingId === conn.connectionId
+  const canReconnect =
+    conn.state === 'suspended' || conn.state === 'error' || conn.state === 'disconnected'
+  const canDisconnect =
+    conn.state !== 'disconnected' && conn.state !== 'error'
+
+  const durationMs = Date.now() - conn.stats.connectedAt
+  const sessionCount = conn.shellIds.size + conn.sftpIds.size
+
+  return (
+    <div className="bg-dark-900 rounded-lg p-3 space-y-2.5">
+      {/* Header: host + status */}
+      <div className="flex items-center justify-between">
+        <div className="flex items-center gap-2 min-w-0">
+          <StatusDot state={conn.state} />
+          <span className="text-sm text-gray-200 truncate font-medium">
+            {conn.config.username}@{conn.config.host}
+          </span>
+        </div>
+        <span
+          className={`text-xs px-1.5 py-0.5 rounded ${
+            conn.state === 'connected'
+              ? 'bg-green-400/10 text-green-400'
+              : conn.state === 'connecting' || conn.state === 'reconnecting'
+                ? 'bg-yellow-400/10 text-yellow-400'
+                : conn.state === 'background'
+                  ? 'bg-green-400/10 text-green-400 opacity-70'
+                  : conn.state === 'suspended'
+                    ? 'bg-gray-400/10 text-gray-400'
+                    : conn.state === 'error'
+                      ? 'bg-red-400/10 text-red-400'
+                      : 'bg-gray-500/10 text-gray-500'
+          }`}
+        >
+          {STATUS_LABELS[conn.state]}
+        </span>
+      </div>
+
+      {/* Details */}
+      <div className="flex flex-wrap items-center gap-x-3 gap-y-1 text-xs text-gray-400">
+        {/* Port */}
+        <span className="flex items-center gap-1">
+          <Activity className="w-3 h-3" />
+          :{conn.config.port ?? 22}
+        </span>
+
+        {/* Duration */}
+        <span className="flex items-center gap-1">
+          <Clock className="w-3 h-3" />
+          {formatDuration(durationMs)}
+        </span>
+
+        {/* Transfer */}
+        {conn.stats.bytesTransferred > 0 && (
+          <span className="flex items-center gap-1">
+            <HardDrive className="w-3 h-3" />
+            {formatBytes(conn.stats.bytesTransferred)}
+          </span>
+        )}
+
+        {/* Sessions */}
+        {sessionCount > 0 && (
+          <span>
+            {conn.shellIds.size} shell{conn.sftpIds.size > 0 ? ` / ${conn.sftpIds.size} sftp` : ''}
+          </span>
+        )}
+
+        {/* Ref count */}
+        {conn.refCount > 1 && <span>×{conn.refCount} 引用</span>}
+      </div>
+
+      {/* Actions */}
+      <div className="flex items-center gap-2 pt-1">
+        {canReconnect && (
+          <button
+            type="button"
+            onClick={() => onReconnect(conn.connectionId)}
+            disabled={isReconnecting}
+            className="flex items-center gap-1 px-2 py-1 rounded text-xs
+                        bg-accent-blue/10 text-accent-blue hover:bg-accent-blue/20
+                        disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
+          >
+            <RefreshCw className={`w-3 h-3 ${isReconnecting ? 'animate-spin' : ''}`} />
+            {isReconnecting ? '重连中...' : '重连'}
+          </button>
+        )}
+        {canDisconnect && (
+          <button
+            type="button"
+            onClick={() => onDisconnect(conn.connectionId)}
+            className="flex items-center gap-1 px-2 py-1 rounded text-xs
+                        bg-red-400/10 text-red-400 hover:bg-red-400/20 transition-colors"
+          >
+            <WifiOff className="w-3 h-3" />
+            断开
+          </button>
+        )}
+      </div>
+
+      {/* Error message */}
+      {conn.error && (
+        <p className="text-xs text-red-400 truncate" title={conn.error}>
+          {conn.error}
+        </p>
+      )}
+    </div>
+  )
+}
+
+// ============== Stats Overview ==============
+
+interface StatsBarProps {
+  total: number
+  connected: number
+  background: number
+  error: number
+}
+
+function StatsOverview({ total, connected, background, error }: StatsBarProps) {
+  const items = [
+    { label: '总计', value: total, color: 'text-gray-300' },
+    { label: '活跃', value: connected, color: 'text-green-400' },
+    { label: '后台', value: background, color: 'text-yellow-400' },
+    { label: '断开/错误', value: error, color: 'text-red-400' },
+  ]
+
+  return (
+    <div className="grid grid-cols-4 gap-2">
+      {items.map((item) => (
+        <div key={item.label} className="bg-dark-900 rounded-lg p-2 text-center">
+          <div className={`text-lg font-semibold ${item.color}`}>{item.value}</div>
+          <div className="text-[10px] text-gray-500">{item.label}</div>
+        </div>
+      ))}
+    </div>
+  )
+}
+
+// ============== Main Panel ==============
+
+export default function ConnectionPanel() {
+  const isOpen = useConnectionPanelStore((s) => s.isOpen)
+  const close = useConnectionPanelStore((s) => s.close)
+
+  const connections = usePoolStore((s) => s.connections)
+  const {
+    resumeConnection,
+    disconnectConnection,
+    getStats,
+  } = useConnectionStore()
+
+  const [reconnectingId, setReconnectingId] = useState<string | null>(null)
+
+  // Derive connections list and stats
+  const { connList, stats } = useMemo(() => {
+    const list = Array.from(connections.values())
+    const s = getStats()
+    return { connList: list, stats: s }
+  }, [connections, getStats])
+
+  // Handlers
+  const handleReconnect = useCallback(
+    async (connectionId: string) => {
+      setReconnectingId(connectionId)
+      try {
+        await resumeConnection(connectionId)
+      } finally {
+        setReconnectingId(null)
+      }
+    },
+    [resumeConnection],
+  )
+
+  const handleDisconnect = useCallback(
+    async (connectionId: string) => {
+      await disconnectConnection(connectionId)
+    },
+    [disconnectConnection],
+  )
+
+  if (!isOpen) return null
+
+  return (
+    <>
+      {/* Backdrop */}
+      <div
+        className="fixed inset-0 bg-black/30 z-40"
+        onClick={close}
+      />
+
+      {/* Panel */}
+      <div
+        className="fixed top-0 right-0 bottom-0 w-[360px] z-50
+                    bg-dark-800/95 backdrop-blur border-l border-dark-700
+                    flex flex-col shadow-xl"
+      >
+        {/* Header */}
+        <div className="flex items-center justify-between px-4 h-12 border-b border-dark-700 shrink-0">
+          <h2 className="text-sm font-semibold text-gray-200 flex items-center gap-2">
+            <Wifi className="w-4 h-4 text-accent-blue" />
+            连接管理
+          </h2>
+          <button
+            type="button"
+            onClick={close}
+            className="p-1 rounded hover:bg-dark-700 text-gray-400 hover:text-gray-200 transition-colors"
+          >
+            <X className="w-4 h-4" />
+          </button>
+        </div>
+
+        {/* Stats Overview */}
+        <div className="px-4 py-3 border-b border-dark-700 shrink-0">
+          <StatsOverview
+            total={stats.total}
+            connected={stats.connected}
+            background={stats.background}
+            error={stats.error + stats.suspended}
+          />
+        </div>
+
+        {/* Connection List */}
+        <div className="flex-1 overflow-y-auto px-4 py-3 space-y-2">
+          {connList.length === 0 ? (
+            <EmptyState
+              icon={WifiOff}
+              title="暂无连接"
+              description="当前没有任何活跃连接，连接到服务器后将在此显示。"
+            />
+          ) : (
+            connList.map((conn) => (
+              <ConnectionCard
+                key={conn.connectionId}
+                conn={conn}
+                onReconnect={handleReconnect}
+                onDisconnect={handleDisconnect}
+                reconnectingId={reconnectingId}
+              />
+            ))
+          )}
+        </div>
+      </div>
+    </>
+  )
+}

src/components/SettingsView.tsx

@@ -1,29 +1,97 @@
-import { useEffect, useState } from 'react'
+import { useEffect, useState, useMemo } from 'react'
 import { useSettingsStore } from '../stores/settingsStore'
 import {
-  Monitor, Palette, Keyboard, Shield, Database, Terminal
+  Monitor, Palette, Terminal, Keyboard, Shield, Database, Info, Search, X,
 } from 'lucide-react'
 import { themes } from '../themes/terminal'
 
-type SettingsTab = 'general' | 'appearance' | 'terminal' | 'ssh' | 'security' | 'about'
+// ─── Tab 类型 ───────────────────────────────────────────────
+type SettingsTab = 'general' | 'appearance' | 'terminal' | 'shortcuts' | 'ssh' | 'security' | 'about'
 
+interface TabMeta {
+  id: SettingsTab
+  label: string
+  description: string
+  icon: React.ComponentType<{ className?: string }>
+}
+
+const TAB_LIST: TabMeta[] = [
+  { id: 'general',     label: '常规',     description: '应用启动与通知',   icon: Monitor },
+  { id: 'appearance',  label: '外观',     description: '主题与语言偏好',   icon: Palette },
+  { id: 'terminal',    label: '终端',     description: '字体与配色方案',   icon: Terminal },
+  { id: 'shortcuts',   label: '快捷键',   description: '键盘快捷键管理',   icon: Keyboard },
+  { id: 'ssh',         label: 'SSH',      description: '连接与认证设置',   icon: Shield },
+  { id: 'security',    label: '安全',     description: '加密与隐私设置',   icon: Database },
+  { id: 'about',       label: '关于',     description: '版本与许可信息',   icon: Info },
+]
+
+// ─── 快捷键数据 ─────────────────────────────────────────────
+interface ShortcutEntry {
+  action: string
+  keys: string
+  category: string
+}
+
+const SHORTCUTS: ShortcutEntry[] = [
+  { action: '切换到下一个标签',   keys: 'Ctrl+Tab',           category: '标签管理' },
+  { action: '切换到上一个标签',   keys: 'Ctrl+Shift+Tab',     category: '标签管理' },
+  { action: '跳转到第 N 个标签', keys: 'Ctrl+1 … Ctrl+9',    category: '标签管理' },
+  { action: '关闭当前标签',       keys: 'Ctrl+W',             category: '标签管理' },
+  { action: '新建标签',           keys: 'Ctrl+Shift+N',       category: '标签管理' },
+  { action: '切换全屏',           keys: 'F11',                category: '视图' },
+  { action: '新建会话',           keys: 'Ctrl+N',             category: '会话' },
+  { action: '快速连接',           keys: 'Ctrl+K',             category: '会话' },
+  { action: '命令面板',           keys: 'Ctrl+Shift+P',       category: '工具' },
+]
+
+// ─── 主组件 ─────────────────────────────────────────────────
 export default function SettingsView() {
   const { settings, isLoaded, loadSettings, setSetting } = useSettingsStore()
   const [activeTab, setActiveTab] = useState<SettingsTab>('general')
+  const [searchQuery, setSearchQuery] = useState('')
+  const [appVersion, setAppVersion] = useState<string>('—')
 
+  useEffect(() => { loadSettings() }, []) // eslint-disable-line react-hooks/exhaustive-deps
+
+  // 获取版本号（参考 StatusBar 实现）
   useEffect(() => {
-    loadSettings()
+    if (window.electronAPI) {
+      window.electronAPI.getVersion().then((v: string) => setAppVersion(v))
+    }
   }, [])
 
-  const tabs = [
-    { id: 'general' as SettingsTab, label: '常规', icon: Monitor },
-    { id: 'appearance' as SettingsTab, label: '外观', icon: Palette },
-    { id: 'terminal' as SettingsTab, label: '终端', icon: Keyboard },
-    { id: 'ssh' as SettingsTab, label: 'SSH', icon: Shield },
-    { id: 'security' as SettingsTab, label: '安全', icon: Database },
-    { id: 'about' as SettingsTab, label: '关于', icon: Monitor },
-  ]
+  // 当前 tab 元信息
+  const currentMeta = useMemo(() => TAB_LIST.find((t) => t.id === activeTab)!, [activeTab])
 
+  // ── 搜索过滤 ──────────────────────────────────────────────
+  const filtered = useMemo((): SettingsTab[] | null => {
+    if (!searchQuery.trim()) return null // null 表示不过滤，正常显示
+    const q = searchQuery.toLowerCase()
+    const keywords: Record<SettingsTab, string[]> = {
+      general:    ['启动', '恢复', '会话', '自动保存', '通知', 'restore', 'notification'],
+      appearance: ['主题', '深色', '浅色', '语言', '中文', 'english', 'theme', 'language'],
+      terminal:   ['字体', 'font', '配色', 'terminal', 'monokai', 'dracula'],
+      shortcuts:  ['快捷键', '键盘', 'keyboard', 'shortcut', 'hotkey'],
+      ssh:        ['ssh', '连接', '端口', '超时', '心跳', '连接池', '重连', '快照'],
+      security:   ['加密', '安全', '密码', '锁屏', 'encrypt', 'lock'],
+      about:      ['版本', '关于', '许可', 'version', 'about', 'license'],
+    }
+    const matchIds = (Object.entries(keywords) as [SettingsTab, string[]][])
+      .filter(([, kws]) => kws.some((k: string) => k.includes(q) || q.includes(k)))
+      .map(([id]) => id)
+    return matchIds.length > 0 ? matchIds : []
+  }, [searchQuery])
+
+  // 如果搜索过滤后有结果，自动跳转到第一个匹配 tab
+  useEffect(() => {
+    if (filtered && filtered.length > 0 && !filtered.includes(activeTab)) {
+      setActiveTab(filtered[0])
+    }
+  }, [filtered]) // eslint-disable-line react-hooks/exhaustive-deps
+
+  const visibleTabs = filtered ? TAB_LIST.filter((t) => filtered.includes(t.id)) : TAB_LIST
+
+  // ── 加载态 ────────────────────────────────────────────────
   if (!isLoaded) {
     return (
       <div className="h-full flex items-center justify-center bg-dark-900">
@@ -32,43 +100,47 @@ export default function SettingsView() {
     )
   }
 
+  // ── 渲染内容区 ────────────────────────────────────────────
   const renderContent = () => {
     switch (activeTab) {
+      // ──────── 常规 ─────────
       case 'general':
         return (
-          <div className="space-y-6">
-            <h2 className="text-xl font-semibold text-gray-200">常规设置</h2>
-            <div className="space-y-4">
+          <div className="space-y-5">
+            <SettingCard>
               <SettingToggle
                 label="启动时恢复会话"
                 description="应用启动时自动恢复上次的会话"
                 checked={settings.restoreOnStart}
                 onChange={(v) => setSetting('restoreOnStart', v)}
               />
+            </SettingCard>
+            <SettingCard>
               <SettingToggle
                 label="自动保存会话"
                 description="自动保存会话配置更改"
                 checked={settings.autoSave}
                 onChange={(v) => setSetting('autoSave', v)}
               />
+            </SettingCard>
+            <SettingCard>
               <SettingToggle
                 label="显示通知"
                 description="在桌面显示连接状态通知"
                 checked={settings.showNotifications}
                 onChange={(v) => setSetting('showNotifications', v)}
               />
-            </div>
+            </SettingCard>
           </div>
         )
 
+      // ──────── 外观 ─────────
       case 'appearance':
         return (
-          <div className="space-y-6">
-            <h2 className="text-xl font-semibold text-gray-200">外观设置</h2>
-            <div className="space-y-4">
-              <div className="p-4 bg-dark-800 rounded-lg">
-                <div className="font-medium text-gray-200 mb-3">主题</div>
-                <div className="grid grid-cols-3 gap-3">
+          <div className="space-y-5">
+            <SettingCard>
+              <SettingSectionTitle>主题</SettingSectionTitle>
+              <div className="grid grid-cols-3 gap-3 mt-3">
                 {[
                   { value: 'dark', label: '深色' },
                   { value: 'light', label: '浅色' },
@@ -87,37 +159,35 @@ export default function SettingsView() {
                   </button>
                 ))}
               </div>
-              </div>
+            </SettingCard>
 
-              <div className="p-4 bg-dark-800 rounded-lg">
-                <div className="font-medium text-gray-200 mb-3">语言</div>
+            <SettingCard>
+              <SettingSectionTitle>语言</SettingSectionTitle>
               <select
                 value={settings.language}
                 onChange={(e) => setSetting('language', e.target.value as any)}
-                  className="w-full px-3 py-2 bg-dark-900 border border-dark-700 rounded text-gray-300 focus:outline-none focus:border-accent-blue"
+                className="w-full mt-3 px-3 py-2 bg-dark-900 border border-dark-700 rounded-lg text-gray-300 focus:outline-none focus:border-accent-blue"
               >
                 <option value="zh-CN">简体中文</option>
                 <option value="en-US">English</option>
               </select>
-              </div>
-            </div>
+            </SettingCard>
           </div>
         )
 
+      // ──────── 终端 ─────────
       case 'terminal':
         return (
-          <div className="space-y-6">
-            <h2 className="text-xl font-semibold text-gray-200">终端设置</h2>
-            <div className="space-y-4">
-              <div className="p-4 bg-dark-800 rounded-lg">
-                <div className="font-medium text-gray-200 mb-3">字体</div>
-                <div className="grid grid-cols-2 gap-3">
+          <div className="space-y-5">
+            <SettingCard>
+              <SettingSectionTitle>字体</SettingSectionTitle>
+              <div className="grid grid-cols-2 gap-4 mt-3">
                 <div>
                   <label className="text-sm text-gray-500">字体族</label>
                   <select
                     value={settings.fontFamily}
                     onChange={(e) => setSetting('fontFamily', e.target.value)}
-                      className="w-full mt-1 px-3 py-2 bg-dark-900 border border-dark-700 rounded text-gray-300"
+                    className="w-full mt-1 px-3 py-2 bg-dark-900 border border-dark-700 rounded-lg text-gray-300 focus:outline-none focus:border-accent-blue"
                   >
                     <option>JetBrains Mono</option>
                     <option>Fira Code</option>
@@ -130,7 +200,7 @@ export default function SettingsView() {
                   <select
                     value={settings.fontSize}
                     onChange={(e) => setSetting('fontSize', parseInt(e.target.value))}
-                      className="w-full mt-1 px-3 py-2 bg-dark-900 border border-dark-700 rounded text-gray-300"
+                    className="w-full mt-1 px-3 py-2 bg-dark-900 border border-dark-700 rounded-lg text-gray-300 focus:outline-none focus:border-accent-blue"
                   >
                     {[12, 13, 14, 15, 16, 18, 20].map((size) => (
                       <option key={size} value={size}>{size}px</option>
@@ -138,11 +208,11 @@ export default function SettingsView() {
                   </select>
                 </div>
               </div>
-              </div>
+            </SettingCard>
 
-              <div className="p-4 bg-dark-800 rounded-lg">
-                <div className="font-medium text-gray-200 mb-3">终端配色</div>
-                <div className="grid grid-cols-4 gap-2">
+            <SettingCard>
+              <SettingSectionTitle>终端配色</SettingSectionTitle>
+              <div className="grid grid-cols-4 gap-2 mt-3">
                 {Object.entries(themes).map(([key, theme]) => (
                   <button
                     key={key}
@@ -161,52 +231,89 @@ export default function SettingsView() {
                   </button>
                 ))}
               </div>
-              </div>
-            </div>
+            </SettingCard>
           </div>
         )
 
+      // ──────── 快捷键 ───────
+      case 'shortcuts':
+        return (
+          <div className="space-y-5">
+            <SettingCard>
+              <div className="overflow-hidden rounded-lg border border-dark-700">
+                <table className="w-full text-sm">
+                  <thead>
+                    <tr className="bg-dark-800/60 text-gray-400 text-left">
+                      <th className="px-4 py-2.5 font-medium">操作</th>
+                      <th className="px-4 py-2.5 font-medium">快捷键</th>
+                      <th className="px-4 py-2.5 font-medium">分类</th>
+                    </tr>
+                  </thead>
+                  <tbody>
+                    {SHORTCUTS.map((s, i) => (
+                      <tr
+                        key={i}
+                        className="border-t border-dark-700/60 hover:bg-dark-800/40 transition-colors"
+                      >
+                        <td className="px-4 py-2.5 text-gray-200">{s.action}</td>
+                        <td className="px-4 py-2.5">
+                          <kbd className="inline-flex items-center gap-1 px-2 py-0.5 rounded bg-dark-700 border border-dark-600 text-xs text-gray-300 font-mono">
+                            {s.keys}
+                          </kbd>
+                        </td>
+                        <td className="px-4 py-2.5 text-gray-500">{s.category}</td>
+                      </tr>
+                    ))}
+                  </tbody>
+                </table>
+              </div>
+              <p className="text-xs text-gray-600 mt-3">
+                快捷键自定义功能将在后续版本中支持。
+              </p>
+            </SettingCard>
+          </div>
+        )
+
+      // ──────── SSH ──────────
       case 'ssh':
         return (
-          <div className="space-y-6">
-            <h2 className="text-xl font-semibold text-gray-200">SSH 设置</h2>
-            <div className="space-y-4">
+          <div className="space-y-5">
+            <SettingCard>
               <SettingToggle
                 label="保持连接活跃"
                 description="定期发送心跳包保持连接"
                 checked={settings.keepAlive}
                 onChange={(v) => setSetting('keepAlive', v)}
               />
+            </SettingCard>
 
-              <div className="p-4 bg-dark-800 rounded-lg">
-                <div className="font-medium text-gray-200 mb-3">默认端口</div>
+            <SettingCard>
+              <SettingSectionTitle>默认端口</SettingSectionTitle>
               <input
                 type="number"
                 value={settings.defaultPort}
                 onChange={(e) => setSetting('defaultPort', parseInt(e.target.value) || 22)}
-                  className="w-32 px-3 py-2 bg-dark-900 border border-dark-700 rounded text-gray-300"
+                className="w-32 mt-2 px-3 py-2 bg-dark-900 border border-dark-700 rounded-lg text-gray-300 focus:outline-none focus:border-accent-blue"
               />
-              </div>
+            </SettingCard>
 
-              <div className="p-4 bg-dark-800 rounded-lg">
-                <div className="font-medium text-gray-200 mb-3">超时设置 (秒)</div>
+            <SettingCard>
+              <SettingSectionTitle>超时设置 (秒)</SettingSectionTitle>
               <input
                 type="number"
                 value={settings.timeout}
                 onChange={(e) => setSetting('timeout', parseInt(e.target.value) || 30)}
-                  className="w-32 px-3 py-2 bg-dark-900 border border-dark-700 rounded text-gray-300"
+                className="w-32 mt-2 px-3 py-2 bg-dark-900 border border-dark-700 rounded-lg text-gray-300 focus:outline-none focus:border-accent-blue"
               />
-              </div>
+            </SettingCard>
 
-              {/* 专业连接管理设置 */}
-              <div className="p-4 bg-dark-800 rounded-lg border border-accent-blue/30">
-                <div className="font-medium text-gray-200 mb-2 flex items-center gap-2">
-                  <span className="text-accent-blue">专业版</span>
-                  连接管理
-                </div>
-                <div className="text-sm text-gray-500 mb-4">
-                  配置连接池行为，优化资源使用和性能
+            {/* 专业连接管理 */}
+            <SettingCard highlight>
+              <div className="flex items-center gap-2 mb-1">
+                <span className="text-accent-blue text-xs font-semibold uppercase tracking-wider">Pro</span>
+                <SettingSectionTitle className="mb-0">连接管理</SettingSectionTitle>
               </div>
+              <p className="text-sm text-gray-500 mb-4">配置连接池行为，优化资源使用和性能</p>
 
               <div className="space-y-4">
                 <div className="grid grid-cols-2 gap-4">
@@ -218,7 +325,7 @@ export default function SettingsView() {
                       max={50}
                       value={settings.maxConnections || 10}
                       onChange={(e) => setSetting('maxConnections', parseInt(e.target.value) || 10)}
-                        className="w-full mt-1 px-3 py-2 bg-dark-900 border border-dark-700 rounded text-gray-300"
+                      className="w-full mt-1 px-3 py-2 bg-dark-900 border border-dark-700 rounded-lg text-gray-300 focus:outline-none focus:border-accent-blue"
                     />
                     <div className="text-xs text-gray-600 mt-1">最大并发 SSH 连接数</div>
                   </div>
@@ -230,7 +337,7 @@ export default function SettingsView() {
                       max={20}
                       value={settings.maxBackgroundConnections || 5}
                       onChange={(e) => setSetting('maxBackgroundConnections', parseInt(e.target.value) || 5)}
-                        className="w-full mt-1 px-3 py-2 bg-dark-900 border border-dark-700 rounded text-gray-300"
+                      className="w-full mt-1 px-3 py-2 bg-dark-900 border border-dark-700 rounded-lg text-gray-300 focus:outline-none focus:border-accent-blue"
                     />
                     <div className="text-xs text-gray-600 mt-1">非活跃标签保持连接数</div>
                   </div>
@@ -245,7 +352,7 @@ export default function SettingsView() {
                       max={120}
                       value={Math.floor((settings.idleTimeoutMs || 5 * 60 * 1000) / 60000)}
                       onChange={(e) => setSetting('idleTimeoutMs', (parseInt(e.target.value) || 5) * 60000)}
-                        className="w-full mt-1 px-3 py-2 bg-dark-900 border border-dark-700 rounded text-gray-300"
+                      className="w-full mt-1 px-3 py-2 bg-dark-900 border border-dark-700 rounded-lg text-gray-300 focus:outline-none focus:border-accent-blue"
                     />
                     <div className="text-xs text-gray-600 mt-1">无操作后进入挂起</div>
                   </div>
@@ -257,19 +364,19 @@ export default function SettingsView() {
                       max={240}
                       value={Math.floor((settings.suspendTimeoutMs || 30 * 60 * 1000) / 60000)}
                       onChange={(e) => setSetting('suspendTimeoutMs', (parseInt(e.target.value) || 30) * 60000)}
-                        className="w-full mt-1 px-3 py-2 bg-dark-900 border border-dark-700 rounded text-gray-300"
+                      className="w-full mt-1 px-3 py-2 bg-dark-900 border border-dark-700 rounded-lg text-gray-300 focus:outline-none focus:border-accent-blue"
                     />
                     <div className="text-xs text-gray-600 mt-1">挂起后自动断开</div>
                   </div>
                 </div>
 
+                <div className="pt-2 space-y-4">
                   <SettingToggle
                     label="启用终端快照"
                     description="切换标签时保存终端内容，快速恢复显示"
                     checked={settings.enableSnapshots !== false}
                     onChange={(v) => setSetting('enableSnapshots', v)}
                   />
-
                   <SettingToggle
                     label="自动重连"
                     description="连接断开后自动尝试重连（最多 3 次）"
@@ -278,46 +385,84 @@ export default function SettingsView() {
                   />
                 </div>
               </div>
-            </div>
+            </SettingCard>
           </div>
         )
 
+      // ──────── 安全 ─────────
       case 'security':
         return (
-          <div className="space-y-6">
-            <h2 className="text-xl font-semibold text-gray-200">安全设置</h2>
-            <div className="space-y-4">
+          <div className="space-y-5">
+            <SettingCard>
               <SettingToggle
                 label="加密存储密码"
-                description="使用 AES-256 加密存储密码"
+                description="使用 AES-256-GCM 加密存储密码"
                 checked={settings.encryptPasswords}
                 onChange={(v) => setSetting('encryptPasswords', v)}
               />
-
+            </SettingCard>
+            <SettingCard>
               <SettingToggle
                 label="锁定屏幕时断开连接"
                 description="系统锁屏时自动断开 SSH 连接"
                 checked={settings.lockOnSleep}
                 onChange={(v) => setSetting('lockOnSleep', v)}
               />
-            </div>
+            </SettingCard>
           </div>
         )
 
+      // ──────── 关于 ─────────
       case 'about':
         return (
-          <div className="space-y-6">
-            <h2 className="text-xl font-semibold text-gray-200">关于 OpsXShell</h2>
-            <div className="p-6 bg-dark-800 rounded-lg text-center">
-              <div className="w-20 h-20 bg-dark-700 rounded-2xl flex items-center justify-center mx-auto mb-4">
+          <div className="space-y-5">
+            <SettingCard>
+              <div className="flex flex-col items-center py-6">
+                <div className="w-20 h-20 bg-dark-700 rounded-2xl flex items-center justify-center mb-4">
                   <Terminal className="w-10 h-10 text-white" />
                 </div>
                 <h3 className="text-xl font-semibold text-gray-200 mb-1">OpsXShell</h3>
-              <p className="text-sm text-gray-500 mb-4">版本 1.0.0</p>
-              <p className="text-sm text-gray-400 max-w-md mx-auto">
+                <p className="text-sm text-gray-500 mb-4">版本 {appVersion}</p>
+                <p className="text-sm text-gray-400 max-w-md text-center">
                   跨平台 SSH/SFTP 终端工具 · 简洁高效 · 安全可靠 · 操作便捷人性化
                 </p>
               </div>
+            </SettingCard>
+
+            <SettingCard>
+              <SettingSectionTitle>技术栈</SettingSectionTitle>
+              <div className="grid grid-cols-2 gap-x-6 gap-y-2 mt-3 text-sm">
+                {[
+                  ['Electron', '28+'],
+                  ['React', '18'],
+                  ['TypeScript', '5'],
+                  ['Vite', '5'],
+                  ['Zustand', '4.4+'],
+                  ['XTerm.js', '5.5+'],
+                  ['Tailwind CSS', '3.3+'],
+                  ['Lucide React', '0.294+'],
+                ].map(([name, ver]) => (
+                  <div key={name} className="flex justify-between py-1 border-b border-dark-700/40">
+                    <span className="text-gray-400">{name}</span>
+                    <span className="text-gray-500 font-mono">{ver}</span>
+                  </div>
+                ))}
+              </div>
+            </SettingCard>
+
+            <SettingCard>
+              <SettingSectionTitle>开源许可</SettingSectionTitle>
+              <p className="text-sm text-gray-400 mt-2">
+                OpsXShell 基于 MIT 许可证开源。本项目使用了以下开源组件：
+              </p>
+              <ul className="mt-2 text-sm text-gray-500 list-disc list-inside space-y-1">
+                <li>ssh2 — MIT License</li>
+                <li>xterm.js — MIT License</li>
+                <li>zmodem-ts — MIT License</li>
+                <li>better-sqlite3 — MIT License</li>
+                <li>lucide-react — ISC License</li>
+              </ul>
+            </SettingCard>
           </div>
         )
 
@@ -326,40 +471,117 @@ export default function SettingsView() {
     }
   }
 
+  // ── 主布局 ────────────────────────────────────────────────
   return (
     <div className="h-full flex bg-dark-900">
-      {/* Sidebar */}
-      <div className="w-48 bg-dark-800 border-r border-dark-700 p-4">
-        <nav className="space-y-1">
-          {tabs.map((tab) => {
+      {/* ── 左侧导航 ── */}
+      <div className="w-56 flex-shrink-0 bg-dark-800/50 border-r border-dark-700 flex flex-col">
+        {/* 搜索框 */}
+        <div className="p-3 border-b border-dark-700">
+          <div className="relative">
+            <Search className="absolute left-2.5 top-1/2 -translate-y-1/2 w-3.5 h-3.5 text-gray-500" />
+            <input
+              type="text"
+              placeholder="搜索设置..."
+              value={searchQuery}
+              onChange={(e) => setSearchQuery(e.target.value)}
+              className="w-full pl-8 pr-8 py-1.5 text-sm bg-dark-900 border border-dark-700 rounded-lg text-gray-300 placeholder-gray-600 focus:outline-none focus:border-accent-blue/60"
+            />
+            {searchQuery && (
+              <button
+                onClick={() => setSearchQuery('')}
+                className="absolute right-2 top-1/2 -translate-y-1/2 text-gray-500 hover:text-gray-300"
+              >
+                <X className="w-3.5 h-3.5" />
+              </button>
+            )}
+          </div>
+        </div>
+
+        {/* Tab 列表 */}
+        <nav className="flex-1 p-2 space-y-0.5 overflow-y-auto">
+          {visibleTabs.map((tab) => {
             const Icon = tab.icon
+            const active = activeTab === tab.id
             return (
               <button
                 key={tab.id}
                 onClick={() => setActiveTab(tab.id)}
-                className={`w-full flex items-center gap-3 px-3 py-2 rounded-lg text-sm transition-colors ${
-                  activeTab === tab.id
-                    ? 'bg-accent-blue text-white'
-                    : 'text-gray-400 hover:bg-dark-700 hover:text-gray-200'
+                className={`w-full flex items-center gap-3 px-3 py-2.5 rounded-lg text-left transition-colors ${
+                  active
+                    ? 'bg-accent-blue/15 text-white'
+                    : 'text-gray-400 hover:bg-dark-700/60 hover:text-gray-200'
                 }`}
               >
-                <Icon className="w-4 h-4" />
-                {tab.label}
+                <Icon className={`w-4 h-4 flex-shrink-0 ${active ? 'text-accent-blue' : ''}`} />
+                <div className="min-w-0">
+                  <div className="text-sm font-medium truncate">{tab.label}</div>
+                  <div className={`text-xs truncate ${active ? 'text-gray-400' : 'text-gray-600'}`}>
+                    {tab.description}
+                  </div>
+                </div>
               </button>
             )
           })}
         </nav>
       </div>
 
-      {/* Content */}
-      <div className="flex-1 p-8 overflow-y-auto">
+      {/* ── 右侧内容区 ── */}
+      <div className="flex-1 flex flex-col min-w-0">
+        {/* Header bar */}
+        <div className="flex-shrink-0 px-8 pt-6 pb-4 border-b border-dark-700/50">
+          <h1 className="text-xl font-semibold text-gray-100">{currentMeta.label}</h1>
+          <p className="text-sm text-gray-500 mt-0.5">{currentMeta.description}</p>
+        </div>
+
+        {/* 内容 */}
+        <div className="flex-1 px-8 py-6 overflow-y-auto">
           {renderContent()}
         </div>
       </div>
+    </div>
   )
 }
 
-// 设置开关组件
+// ─── 子组件 ─────────────────────────────────────────────────
+
+/** 卡片容器 */
+function SettingCard({
+  children,
+  highlight = false,
+}: {
+  children: React.ReactNode
+  highlight?: boolean
+}) {
+  return (
+    <div
+      className={`rounded-xl p-5 ${
+        highlight
+          ? 'bg-dark-800/80 border border-accent-blue/20'
+          : 'bg-dark-800/50 border border-dark-700/50'
+      }`}
+    >
+      {children}
+    </div>
+  )
+}
+
+/** 区域小标题 */
+function SettingSectionTitle({
+  children,
+  className = '',
+}: {
+  children: React.ReactNode
+  className?: string
+}) {
+  return (
+    <div className={`text-sm font-semibold text-gray-300 mb-1 ${className}`}>
+      {children}
+    </div>
+  )
+}
+
+/** 开关设置项 */
 function SettingToggle({
   label,
   description,
@@ -372,20 +594,20 @@ function SettingToggle({
   onChange: (value: boolean) => void
 }) {
   return (
-    <div className="flex items-center justify-between p-4 bg-dark-800 rounded-lg">
-      <div>
-        <div className="font-medium text-gray-200">{label}</div>
-        <div className="text-sm text-gray-500">{description}</div>
+    <div className="flex items-center justify-between">
+      <div className="mr-4">
+        <div className="font-medium text-gray-200 text-sm">{label}</div>
+        <div className="text-xs text-gray-500 mt-0.5">{description}</div>
       </div>
       <button
         onClick={() => onChange(!checked)}
-        className={`relative w-12 h-6 rounded-full transition-colors ${
+        className={`relative flex-shrink-0 w-11 h-6 rounded-full transition-colors ${
           checked ? 'bg-accent-blue' : 'bg-dark-600'
         }`}
       >
         <span
           className={`absolute top-1 w-4 h-4 bg-white rounded-full transition-transform ${
-            checked ? 'left-7' : 'left-1'
+            checked ? 'left-6' : 'left-1'
           }`}
         />
       </button>

src/components/StatusBar.tsx

@@ -1,7 +1,9 @@
-import { Wifi, WifiOff, AlertCircle, Loader2, HardDrive, Clock } from 'lucide-react'
+import { Wifi, WifiOff, AlertCircle, Loader2, HardDrive, Clock, ChevronUp } from 'lucide-react'
 import { useEffect, useState, useMemo } from 'react'
 import { useTabStore, type ConnectionStatus } from '../stores/tabStore'
+import { usePoolStore } from '../stores/connection/poolStore'
 import { useConnectionStore, type ConnectionState } from '../stores/connection'
+import { useConnectionPanelStore } from '../stores/connectionPanelStore'
 
 // ============== Status Display Config ==============
 
@@ -80,6 +82,7 @@ function mapTabStatusToConnectionState(status?: ConnectionStatus): ConnectionSta
 // ============== Component ==============
 
 export default function StatusBar() {
+  const togglePanel = useConnectionPanelStore((s) => s.toggle)
   const [version, setVersion] = useState('1.0.0')
   const [currentTime, setCurrentTime] = useState(new Date())
 
@@ -87,10 +90,13 @@ export default function StatusBar() {
   const activeTabId = useTabStore((s) => s.activeTabId)
   const tabs = useTabStore((s) => s.tabs)
 
-  // Connection store (pool)
-  const connections = useConnectionStore().config // trigger re-renders via store subscription
+  // Connection store (pool) — subscribe to connections to reactively update
+  const connections = usePoolStore((s) => s.connections)
   const poolStore = useConnectionStore()
 
+  // Total connection count for the panel badge
+  const totalConnections = connections.size
+
   // Derive the active tab
   const activeTab = useMemo(
     () => tabs.find((t) => t.id === activeTabId),
@@ -158,8 +164,15 @@ export default function StatusBar() {
 
   return (
     <div className="h-7 bg-dark-800 border-t border-dark-700 flex items-center px-3 text-xs text-white select-none">
-      {/* Left: Connection status indicator + host */}
-      <div className={`flex items-center gap-1.5 ${statusCfg.colorClass} ${statusCfg.animateClass}`}>
+      {/* Left: Connection status area — clickable to toggle ConnectionPanel */}
+      <button
+        type="button"
+        onClick={togglePanel}
+        className={`flex items-center gap-1.5 rounded px-1 py-0.5 -ml-1
+                     hover:bg-dark-700/60 transition-colors cursor-pointer
+                     ${statusCfg.colorClass} ${statusCfg.animateClass}`}
+        title="点击打开连接管理面板"
+      >
         {statusCfg.icon}
         <span>{statusCfg.label}</span>
         {hostLabel && (
@@ -168,7 +181,13 @@ export default function StatusBar() {
             <span className="text-gray-300">{hostLabel}</span>
           </>
         )}
-      </div>
+        {totalConnections > 0 && (
+          <span className="ml-1 px-1.5 py-px rounded-full bg-accent-blue/20 text-accent-blue text-[10px] font-medium">
+            {totalConnections}
+          </span>
+        )}
+        <ChevronUp className="w-3 h-3 text-gray-500" />
+      </button>
 
       {/* Center: Transfer stats */}
       {transferLabel && (

src/components/common/CommandPalette.tsx

@@ -0,0 +1,448 @@
+/**
+ * CommandPalette - 全局命令面板 (v1.3.0)
+ *
+ * VS Code 风格 Ctrl+Shift+P 命令面板
+ * 支持搜索命令、会话、片段，键盘导航
+ * 片段数据从 snippetStore 实时读取
+ */
+
+import { useState, useEffect, useRef, useCallback, useMemo } from 'react'
+import {
+  Search,
+  Globe,
+  Code2,
+  Zap,
+  Plus,
+  X,
+  FolderOpen,
+  ChevronRight,
+  Settings,
+} from 'lucide-react'
+import { useTabStore } from '../../stores/tabStore'
+import { useSessionStore, useSnippetStore, useCommandPaletteStore, type Session } from '../../stores'
+
+// ─── 类型定义 ────────────────────────────────────────────────────────
+
+type CommandPaletteItemType = 'command' | 'session' | 'snippet'
+
+interface CommandPaletteItem {
+  id: string
+  type: CommandPaletteItemType
+  label: string
+  description?: string
+  shortcut?: string
+  icon: React.ReactNode
+  action: () => void
+}
+
+interface CommandPaletteProps {
+  onNewSession: () => void
+  onQuickConnect: () => void
+  onOpenSettings: () => void
+  onEditSession?: (session: Session) => void
+}
+
+// ─── 类型 badge 颜色映射 ──────────────────────────────────────────────
+
+const TYPE_BADGE: Record<CommandPaletteItemType, { label: string; className: string }> = {
+  command: { label: '命令', className: 'bg-accent-blue/20 text-accent-blue' },
+  session: { label: '会话', className: 'bg-accent-green/20 text-accent-green' },
+  snippet: { label: '片段', className: 'bg-accent-purple/20 text-accent-purple' },
+}
+
+// ─── 组件 ──────────────────────────────────────────────────────────────
+
+export function CommandPalette({
+  onNewSession,
+  onQuickConnect,
+  onOpenSettings,
+  onEditSession,
+}: CommandPaletteProps) {
+  const [query, setQuery] = useState('')
+  const [selectedIndex, setSelectedIndex] = useState(0)
+  const inputRef = useRef<HTMLInputElement>(null)
+  const listRef = useRef<HTMLDivElement>(null)
+
+  const { sessions } = useSessionStore()
+  const { snippets } = useSnippetStore()
+  const { isOpen, close } = useCommandPaletteStore()
+  const { addTab, closeTab, tabs, activeTabId } = useTabStore()
+
+  // ── 构建命令列表 ──
+  const buildCommands = useCallback((): CommandPaletteItem[] => {
+    const items: CommandPaletteItem[] = []
+
+    // 内置命令
+    const builtinCommands: CommandPaletteItem[] = [
+      {
+        id: 'cmd:new-session',
+        type: 'command',
+        label: '新建会话',
+        description: '创建新的 SSH 会话配置',
+        shortcut: undefined,
+        icon: <Plus size={16} />,
+        action: () => onNewSession(),
+      },
+      {
+        id: 'cmd:quick-connect',
+        type: 'command',
+        label: '快速连接',
+        description: '直接输入主机信息连接',
+        icon: <Zap size={16} />,
+        action: () => onQuickConnect(),
+      },
+      {
+        id: 'cmd:open-settings',
+        type: 'command',
+        label: '打开设置',
+        description: '应用偏好设置',
+        icon: <Settings size={16} />,
+        action: () => onOpenSettings(),
+      },
+      {
+        id: 'cmd:new-tab',
+        type: 'command',
+        label: '新建标签页',
+        description: '打开一个新标签页',
+        shortcut: 'Ctrl+Shift+N',
+        icon: <Plus size={16} />,
+        action: () => addTab({ title: '新标签', type: 'welcome' }),
+      },
+      {
+        id: 'cmd:close-tab',
+        type: 'command',
+        label: '关闭当前标签',
+        description: '关闭当前活动的标签页',
+        shortcut: 'Ctrl+W',
+        icon: <X size={16} />,
+        action: () => {
+          if (activeTabId && tabs.length > 1) {
+            closeTab(activeTabId)
+          }
+        },
+      },
+      {
+        id: 'cmd:close-all-tabs',
+        type: 'command',
+        label: '关闭所有标签',
+        description: '关闭所有标签页并回到欢迎页',
+        icon: <X size={16} />,
+        action: () => useTabStore.getState().closeAllTabs(),
+      },
+      {
+        id: 'cmd:new-sftp',
+        type: 'command',
+        label: '新建 SFTP 浏览器',
+        description: '打开 SFTP 文件管理标签',
+        icon: <FolderOpen size={16} />,
+        action: () => addTab({ title: 'SFTP', type: 'sftp' }),
+      },
+      {
+        id: 'cmd:new-portforward',
+        type: 'command',
+        label: '新建端口转发',
+        description: '打开端口转发管理标签',
+        icon: <ChevronRight size={16} />,
+        action: () => addTab({ title: '端口转发', type: 'portforward' }),
+      },
+    ]
+
+    items.push(...builtinCommands)
+
+    // 会话列表 — 从 useSessionStore 读取
+    for (const session of sessions) {
+      items.push({
+        id: `session:${session.id}`,
+        type: 'session',
+        label: session.name,
+        description: `${session.username}@${session.host}:${session.port}`,
+        icon: <Globe size={16} />,
+        action: () => {
+          addTab({
+            title: session.name,
+            type: 'terminal',
+            sessionId: session.id,
+          })
+        },
+      })
+      // 编辑会话命令
+      if (onEditSession) {
+        items.push({
+          id: `session-edit:${session.id}`,
+          type: 'command',
+          label: `编辑会话: ${session.name}`,
+          description: `${session.username}@${session.host}:${session.port}`,
+          icon: <Settings size={16} />,
+          action: () => onEditSession(session),
+        })
+      }
+    }
+
+    // 片段列表 — 从 snippetStore 读取真实数据
+    for (const snippet of snippets) {
+      items.push({
+        id: `snippet:${snippet.id}`,
+        type: 'snippet',
+        label: snippet.name,
+        description: snippet.content.length > 60
+          ? snippet.content.slice(0, 60) + '…'
+          : snippet.content,
+        icon: <Code2 size={16} />,
+        action: () => {
+          // 片段插入到当前终端的逻辑（后续可通过 dedicated event 扩展）
+          console.log('[CommandPalette] Insert snippet:', snippet.content)
+        },
+      })
+    }
+
+    return items
+  }, [sessions, snippets, addTab, closeTab, activeTabId, tabs.length, onNewSession, onQuickConnect, onOpenSettings, onEditSession])
+
+  // ── 过滤结果 ──
+  const filteredItems = useMemo(() => {
+    const allItems = buildCommands()
+    if (!query.trim()) return allItems
+
+    const lowerQuery = query.toLowerCase()
+    return allItems.filter((item) => {
+      if (item.label.toLowerCase().includes(lowerQuery)) return true
+      if (item.description?.toLowerCase().includes(lowerQuery)) return true
+      if (item.shortcut?.toLowerCase().includes(lowerQuery)) return true
+      return false
+    })
+  }, [query, buildCommands])
+
+  // ── 重置选中索引 ──
+  useEffect(() => {
+    setSelectedIndex(0)
+  }, [query])
+
+  // ── 打开时聚焦输入框 ──
+  useEffect(() => {
+    if (isOpen) {
+      setQuery('')
+      setSelectedIndex(0)
+      // 延迟聚焦，等待动画完成
+      requestAnimationFrame(() => {
+        inputRef.current?.focus()
+      })
+    }
+  }, [isOpen])
+
+  // ── 滚动到选中项 ──
+  useEffect(() => {
+    if (!listRef.current) return
+    const selectedEl = listRef.current.querySelector(`[data-index="${selectedIndex}"]`)
+    if (selectedEl) {
+      selectedEl.scrollIntoView({ block: 'nearest' })
+    }
+  }, [selectedIndex])
+
+  // ── 键盘导航 ──
+  const handleKeyDown = useCallback(
+    (e: React.KeyboardEvent) => {
+      switch (e.key) {
+        case 'ArrowDown':
+          e.preventDefault()
+          setSelectedIndex((prev) =>
+            prev < filteredItems.length - 1 ? prev + 1 : 0
+          )
+          break
+        case 'ArrowUp':
+          e.preventDefault()
+          setSelectedIndex((prev) =>
+            prev > 0 ? prev - 1 : filteredItems.length - 1
+          )
+          break
+        case 'Enter':
+          e.preventDefault()
+          if (filteredItems[selectedIndex]) {
+            filteredItems[selectedIndex].action()
+            close()
+          }
+          break
+        case 'Escape':
+          e.preventDefault()
+          close()
+          break
+      }
+    },
+    [filteredItems, selectedIndex, close]
+  )
+
+  // ── 背景点击关闭 ──
+  const handleBackdropClick = useCallback(
+    (e: React.MouseEvent) => {
+      if (e.target === e.currentTarget) {
+        close()
+      }
+    },
+    [close]
+  )
+
+  // ── 按类型分组 ──
+  const groupedItems = useMemo(() => {
+    const groups: { type: CommandPaletteItemType; items: CommandPaletteItem[] }[] = []
+    const typeOrder: CommandPaletteItemType[] = ['command', 'session', 'snippet']
+    for (const type of typeOrder) {
+      const typeItems = filteredItems.filter((i) => i.type === type)
+      if (typeItems.length > 0) {
+        groups.push({ type, items: typeItems })
+      }
+    }
+    return groups
+  }, [filteredItems])
+
+  // 计算全局索引偏移
+  let runningIndex = 0
+
+  if (!isOpen) return null
+
+  return (
+    <div
+      className="fixed inset-0 z-[100] flex items-start justify-center pt-[15vh]"
+      onClick={handleBackdropClick}
+      onKeyDown={handleKeyDown}
+    >
+      {/* Backdrop */}
+      <div className="absolute inset-0 bg-black/60 backdrop-blur-sm" />
+
+      {/* Palette container */}
+      <div
+        className="relative w-[600px] max-h-[460px] bg-dark-800 border border-dark-700 rounded-lg shadow-2xl overflow-hidden flex flex-col animate-in fade-in slide-in-from-top-4 duration-150"
+        role="dialog"
+        aria-modal="true"
+        aria-label="命令面板"
+      >
+        {/* Search input */}
+        <div className="flex items-center gap-3 px-4 py-3 border-b border-dark-700">
+          <Search size={18} className="text-gray-400 flex-shrink-0" />
+          <input
+            ref={inputRef}
+            type="text"
+            value={query}
+            onChange={(e) => setQuery(e.target.value)}
+            placeholder="搜索命令、会话或片段..."
+            className="flex-1 bg-transparent text-gray-200 placeholder-gray-500 outline-none text-sm"
+            autoComplete="off"
+            spellCheck={false}
+          />
+          <kbd className="hidden sm:inline-flex items-center gap-0.5 px-1.5 py-0.5 text-[10px] text-gray-500 bg-dark-700 rounded border border-dark-600">
+            ESC
+          </kbd>
+        </div>
+
+        {/* Results list */}
+        <div ref={listRef} className="flex-1 overflow-y-auto py-1">
+          {filteredItems.length === 0 ? (
+            <div className="flex flex-col items-center justify-center py-12 text-gray-500">
+              <Search size={32} className="mb-2 opacity-30" />
+              <p className="text-sm">没有找到匹配的结果</p>
+              <p className="text-xs text-gray-600 mt-1">试试其他关键词</p>
+            </div>
+          ) : (
+            groupedItems.map((group) => {
+              const groupStartIndex = runningIndex
+              runningIndex += group.items.length
+
+              return (
+                <div key={group.type}>
+                  {/* Group header */}
+                  <div className="flex items-center gap-2 px-4 py-1.5 text-[11px] font-medium text-gray-500 uppercase tracking-wider">
+                    <span
+                      className={`inline-flex items-center px-1.5 py-0.5 rounded text-[10px] font-semibold ${TYPE_BADGE[group.type].className}`}
+                    >
+                      {TYPE_BADGE[group.type].label}
+                    </span>
+                    <span className="flex-1 h-px bg-dark-700" />
+                    <span className="text-gray-600">{group.items.length}</span>
+                  </div>
+
+                  {/* Group items */}
+                  {group.items.map((item, idx) => {
+                    const globalIndex = groupStartIndex + idx
+                    const isSelected = globalIndex === selectedIndex
+                    return (
+                      <div
+                        key={item.id}
+                        data-index={globalIndex}
+                        className={`
+                          flex items-center gap-3 px-4 py-2 cursor-pointer transition-colors duration-75
+                          ${isSelected
+                            ? 'bg-accent-blue/15 text-gray-100'
+                            : 'text-gray-300 hover:bg-dark-700'
+                          }
+                        `}
+                        onClick={() => {
+                          item.action()
+                          close()
+                        }}
+                        onMouseEnter={() => setSelectedIndex(globalIndex)}
+                      >
+                        {/* Icon */}
+                        <span
+                          className={`flex-shrink-0 w-5 h-5 flex items-center justify-center ${
+                            isSelected ? 'text-accent-blue' : 'text-gray-500'
+                          }`}
+                        >
+                          {item.icon}
+                        </span>
+
+                        {/* Label + description */}
+                        <div className="flex-1 min-w-0">
+                          <div className="text-sm truncate">{item.label}</div>
+                          {item.description && (
+                            <div className="text-[11px] text-gray-500 truncate">
+                              {item.description}
+                            </div>
+                          )}
+                        </div>
+
+                        {/* Shortcut */}
+                        {item.shortcut && (
+                          <kbd className="flex-shrink-0 text-[11px] text-gray-500 bg-dark-700 px-1.5 py-0.5 rounded border border-dark-600">
+                            {item.shortcut}
+                          </kbd>
+                        )}
+
+                        {/* Type badge */}
+                        <span
+                          className={`flex-shrink-0 inline-flex items-center px-1.5 py-0.5 rounded text-[10px] font-semibold ${TYPE_BADGE[item.type].className}`}
+                        >
+                          {TYPE_BADGE[item.type].label}
+                        </span>
+                      </div>
+                    )
+                  })}
+                </div>
+              )
+            })
+          )}
+        </div>
+
+        {/* Footer hint */}
+        <div className="flex items-center justify-between px-4 py-2 border-t border-dark-700 text-[11px] text-gray-600">
+          <div className="flex items-center gap-3">
+            <span className="flex items-center gap-1">
+              <kbd className="px-1 py-0.5 bg-dark-700 rounded border border-dark-600">↑↓</kbd>
+              导航
+            </span>
+            <span className="flex items-center gap-1">
+              <kbd className="px-1 py-0.5 bg-dark-700 rounded border border-dark-600">↵</kbd>
+              执行
+            </span>
+            <span className="flex items-center gap-1">
+              <kbd className="px-1 py-0.5 bg-dark-700 rounded border border-dark-600">esc</kbd>
+              关闭
+            </span>
+          </div>
+          <span>
+            {filteredItems.length} 个结果
+          </span>
+        </div>
+      </div>
+    </div>
+  )
+}
+
+export default CommandPalette

src/components/index.ts

@@ -10,6 +10,7 @@ export { default as Sidebar } from './Sidebar'
 export { default as TabBar } from './TabBar'
 export { default as TabContent } from './TabContent'
 export { default as StatusBar } from './StatusBar'
+export { default as ConnectionPanel } from './ConnectionPanel'
 
 // 功能组件 (当前在根目录，将来移到对应目录)
 export { default as TerminalView } from './TerminalView'
@@ -34,3 +35,6 @@ export {
 export { default as Button } from './common/Button'
 export { default as Modal } from './common/Modal'
 export { default as EmptyState } from './common/EmptyState'
+
+// Snippets
+export { default as SnippetPanel } from './snippets/SnippetPanel'

src/components/snippets/SnippetPanel.tsx

@@ -0,0 +1,397 @@
+/**
+ * SnippetPanel — 命令片段库侧边面板
+ *
+ * 功能：搜索、新建、编辑、删除命令片段，并插入到活跃终端
+ */
+
+import { useState, useEffect, useCallback } from 'react'
+import { Code2, Plus, Search, Trash2, Copy, Pencil, X } from 'lucide-react'
+import { useSnippetStore, type Snippet } from '../../stores/snippetStore'
+import { useTabStore } from '../../stores/tabStore'
+import Button from '../common/Button'
+import Modal from '../common/Modal'
+import EmptyState from '../common/EmptyState'
+
+// ─── Snippet 编辑对话框 ─────────────────────────────────────────
+
+interface SnippetFormData {
+  name: string
+  content: string
+  tags: string
+}
+
+interface SnippetFormProps {
+  isOpen: boolean
+  initial: SnippetFormData
+  title: string
+  confirmText: string
+  onConfirm: (data: SnippetFormData) => void
+  onClose: () => void
+}
+
+function SnippetFormModal({ isOpen, initial, title, confirmText, onConfirm, onClose }: SnippetFormProps) {
+  const [form, setForm] = useState<SnippetFormData>(initial)
+
+  useEffect(() => {
+    if (isOpen) {
+      setForm(initial)
+    }
+  }, [isOpen, initial])
+
+  const handleConfirm = () => {
+    if (!form.name.trim() || !form.content.trim()) return
+    onConfirm(form)
+  }
+
+  return (
+    <Modal
+      isOpen={isOpen}
+      title={title}
+      confirmText={confirmText}
+      onClose={onClose}
+      onConfirm={handleConfirm}
+    >
+      <div className="space-y-4">
+        {/* 名称 */}
+        <div>
+          <label className="block text-sm text-gray-400 mb-1">名称</label>
+          <input
+            type="text"
+            value={form.name}
+            onChange={(e) => setForm((f) => ({ ...f, name: e.target.value }))}
+            placeholder="例如：重启 Nginx"
+            className="w-full px-3 py-2 bg-dark-700 border border-dark-600 rounded-lg text-white placeholder-gray-500 focus:outline-none focus:border-accent-blue text-sm"
+          />
+        </div>
+
+        {/* 命令内容 */}
+        <div>
+          <label className="block text-sm text-gray-400 mb-1">命令</label>
+          <textarea
+            value={form.content}
+            onChange={(e) => setForm((f) => ({ ...f, content: e.target.value }))}
+            placeholder="sudo systemctl restart nginx"
+            rows={4}
+            className="w-full px-3 py-2 bg-dark-700 border border-dark-600 rounded-lg text-white placeholder-gray-500 focus:outline-none focus:border-accent-blue text-sm font-mono resize-none"
+          />
+        </div>
+
+        {/* 标签 */}
+        <div>
+          <label className="block text-sm text-gray-400 mb-1">标签 <span className="text-gray-600">(逗号分隔)</span></label>
+          <input
+            type="text"
+            value={form.tags}
+            onChange={(e) => setForm((f) => ({ ...f, tags: e.target.value }))}
+            placeholder="linux, nginx, ops"
+            className="w-full px-3 py-2 bg-dark-700 border border-dark-600 rounded-lg text-white placeholder-gray-500 focus:outline-none focus:border-accent-blue text-sm"
+          />
+        </div>
+      </div>
+    </Modal>
+  )
+}
+
+const EMPTY_FORM: SnippetFormData = { name: '', content: '', tags: '' }
+
+// ─── 主面板组件 ─────────────────────────────────────────────────
+
+export default function SnippetPanel() {
+  const { snippets, isLoaded, loadSnippets, addSnippet, updateSnippet, deleteSnippet, searchSnippets } = useSnippetStore()
+  const { tabs, activeTabId } = useTabStore()
+
+  const [query, setQuery] = useState('')
+  const [copiedId, setCopiedId] = useState<string | null>(null)
+
+  // 编辑对话框状态
+  const [formOpen, setFormOpen] = useState(false)
+  const [editingSnippet, setEditingSnippet] = useState<Snippet | null>(null)
+  const [formData, setFormData] = useState<SnippetFormData>(EMPTY_FORM)
+  const [formTitle, setFormTitle] = useState('新建片段')
+  const [formConfirmText, setFormConfirmText] = useState('创建')
+
+  // 初始化加载
+  useEffect(() => {
+    loadSnippets()
+  }, [loadSnippets])
+
+  // 复制反馈计时器
+  useEffect(() => {
+    if (!copiedId) return
+    const timer = setTimeout(() => setCopiedId(null), 1500)
+    return () => clearTimeout(timer)
+  }, [copiedId])
+
+  // 获取当前活跃终端的 shellId
+  const getActiveShellId = useCallback((): string | null => {
+    const activeTab = tabs.find((t) => t.id === activeTabId)
+    return activeTab?.connectionInstance?.shellId ?? null
+  }, [tabs, activeTabId])
+
+  // 插入命令到终端
+  const handleInsert = useCallback(async (content: string) => {
+    const shellId = getActiveShellId()
+    if (!shellId) return
+
+    try {
+      await window.electronAPI?.sshShellWrite(shellId, content + '\n')
+    } catch (err) {
+      console.error('Failed to insert snippet:', err)
+    }
+  }, [getActiveShellId])
+
+  // 复制到剪贴板
+  const handleCopy = useCallback(async (snippet: Snippet) => {
+    try {
+      await navigator.clipboard.writeText(snippet.content)
+      setCopiedId(snippet.id)
+    } catch {
+      // fallback
+      console.error('Clipboard write failed')
+    }
+  }, [])
+
+  // 新建片段
+  const handleCreate = () => {
+    setEditingSnippet(null)
+    setFormData(EMPTY_FORM)
+    setFormTitle('新建片段')
+    setFormConfirmText('创建')
+    setFormOpen(true)
+  }
+
+  // 编辑片段
+  const handleEdit = (snippet: Snippet) => {
+    setEditingSnippet(snippet)
+    setFormData({
+      name: snippet.name,
+      content: snippet.content,
+      tags: snippet.tags.join(', '),
+    })
+    setFormTitle('编辑片段')
+    setFormConfirmText('保存')
+    setFormOpen(true)
+  }
+
+  // 表单提交
+  const handleFormSubmit = async (data: SnippetFormData) => {
+    const tags = data.tags
+      .split(',')
+      .map((t) => t.trim())
+      .filter(Boolean)
+
+    if (editingSnippet) {
+      await updateSnippet(editingSnippet.id, {
+        name: data.name.trim(),
+        content: data.content.trim(),
+        tags,
+      })
+    } else {
+      await addSnippet(data.name.trim(), data.content.trim(), tags)
+    }
+    setFormOpen(false)
+  }
+
+  // 搜索结果
+  const filteredSnippets = query.trim() ? searchSnippets(query) : snippets
+
+  // 是否有活跃终端
+  const hasActiveTerminal = !!getActiveShellId()
+
+  return (
+    <div className="flex flex-col h-full bg-dark-800">
+      {/* 头部 */}
+      <div className="flex items-center gap-2 px-4 py-3 border-b border-dark-700">
+        <Code2 className="w-5 h-5 text-accent-blue flex-shrink-0" />
+        <h2 className="text-sm font-semibold text-gray-200">命令片段</h2>
+      </div>
+
+      {/* 搜索框 */}
+      <div className="p-3 border-b border-dark-700">
+        <div className="relative">
+          <Search className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-gray-500" />
+          <input
+            type="text"
+            value={query}
+            onChange={(e) => setQuery(e.target.value)}
+            placeholder="搜索片段..."
+            className="w-full pl-9 pr-3 py-2 bg-dark-700 border border-dark-600 rounded-lg text-sm text-white placeholder-gray-500 focus:outline-none focus:border-accent-blue"
+          />
+          {query && (
+            <button
+              onClick={() => setQuery('')}
+              className="absolute right-2 top-1/2 -translate-y-1/2 p-0.5 hover:bg-dark-600 rounded"
+            >
+              <X className="w-3.5 h-3.5 text-gray-500" />
+            </button>
+          )}
+        </div>
+      </div>
+
+      {/* 片段列表 */}
+      <div className="flex-1 overflow-y-auto">
+        {isLoaded && filteredSnippets.length === 0 ? (
+          <EmptyState
+            icon={Code2}
+            title={query ? '没有匹配的片段' : '暂无片段'}
+            description={query ? '尝试其他关键词搜索' : '保存常用命令，快速插入到终端'}
+            action={
+              !query
+                ? { label: '新建片段', onClick: handleCreate }
+                : undefined
+            }
+          />
+        ) : (
+          <div className="p-2 space-y-1">
+            {filteredSnippets.map((snippet) => (
+              <SnippetItem
+                key={snippet.id}
+                snippet={snippet}
+                copied={copiedId === snippet.id}
+                canInsert={hasActiveTerminal}
+                onInsert={handleInsert}
+                onCopy={handleCopy}
+                onEdit={handleEdit}
+                onDelete={deleteSnippet}
+              />
+            ))}
+          </div>
+        )}
+      </div>
+
+      {/* 底部新建按钮 */}
+      <div className="p-3 border-t border-dark-700">
+        <Button
+          variant="primary"
+          size="sm"
+          className="w-full"
+          icon={<Plus className="w-4 h-4" />}
+          onClick={handleCreate}
+        >
+          新建片段
+        </Button>
+      </div>
+
+      {/* 编辑/新建对话框 */}
+      <SnippetFormModal
+        isOpen={formOpen}
+        initial={formData}
+        title={formTitle}
+        confirmText={formConfirmText}
+        onConfirm={handleFormSubmit}
+        onClose={() => setFormOpen(false)}
+      />
+    </div>
+  )
+}
+
+// ─── 单个片段项 ─────────────────────────────────────────────────
+
+interface SnippetItemProps {
+  snippet: Snippet
+  copied: boolean
+  canInsert: boolean
+  onInsert: (content: string) => void
+  onCopy: (snippet: Snippet) => void
+  onEdit: (snippet: Snippet) => void
+  onDelete: (id: string) => Promise<void>
+}
+
+function SnippetItem({ snippet, copied, canInsert, onInsert, onCopy, onEdit, onDelete }: SnippetItemProps) {
+  const [confirmDelete, setConfirmDelete] = useState(false)
+
+  // 命令预览：显示第一行，截断到 60 字符
+  const preview = snippet.content.split('\n')[0].slice(0, 60) + (snippet.content.length > 60 ? '…' : '')
+
+  return (
+    <div className="group rounded-lg border border-dark-700 hover:border-dark-600 bg-dark-850 p-2.5 transition-colors">
+      {/* 名称行 */}
+      <div className="flex items-start justify-between gap-2 mb-1">
+        <span className="text-sm font-medium text-gray-200 truncate flex-1" title={snippet.name}>
+          {snippet.name}
+        </span>
+        <div className="flex items-center gap-0.5 opacity-0 group-hover:opacity-100 transition-opacity flex-shrink-0">
+          {/* 插入 */}
+          <button
+            onClick={() => onInsert(snippet.content)}
+            disabled={!canInsert}
+            title={canInsert ? '插入到终端' : '无活跃终端'}
+            className="p-1 rounded hover:bg-accent-blue/20 text-accent-blue disabled:text-gray-600 disabled:hover:bg-transparent transition-colors"
+          >
+            <Code2 className="w-3.5 h-3.5" />
+          </button>
+          {/* 复制 */}
+          <button
+            onClick={() => onCopy(snippet)}
+            title="复制"
+            className="p-1 rounded hover:bg-dark-600 text-gray-400 transition-colors"
+          >
+            {copied ? (
+              <span className="text-xs text-green-400 px-1">✓</span>
+            ) : (
+              <Copy className="w-3.5 h-3.5" />
+            )}
+          </button>
+          {/* 编辑 */}
+          <button
+            onClick={() => onEdit(snippet)}
+            title="编辑"
+            className="p-1 rounded hover:bg-dark-600 text-gray-400 transition-colors"
+          >
+            <Pencil className="w-3.5 h-3.5" />
+          </button>
+          {/* 删除 */}
+          {confirmDelete ? (
+            <div className="flex items-center gap-0.5">
+              <button
+                onClick={async () => {
+                  await onDelete(snippet.id)
+                  setConfirmDelete(false)
+                }}
+                className="px-1.5 py-0.5 text-xs bg-red-600 hover:bg-red-500 text-white rounded transition-colors"
+              >
+                确认
+              </button>
+              <button
+                onClick={() => setConfirmDelete(false)}
+                className="px-1.5 py-0.5 text-xs text-gray-400 hover:text-gray-200 transition-colors"
+              >
+                取消
+              </button>
+            </div>
+          ) : (
+            <button
+              onClick={() => setConfirmDelete(true)}
+              title="删除"
+              className="p-1 rounded hover:bg-red-500/20 text-gray-400 hover:text-red-400 transition-colors"
+            >
+              <Trash2 className="w-3.5 h-3.5" />
+            </button>
+          )}
+        </div>
+      </div>
+
+      {/* 命令预览 */}
+      <p
+        className="text-xs font-mono text-gray-500 truncate mb-1.5"
+        title={snippet.content}
+      >
+        {preview}
+      </p>
+
+      {/* 标签 */}
+      {snippet.tags.length > 0 && (
+        <div className="flex flex-wrap gap-1">
+          {snippet.tags.map((tag) => (
+            <span
+              key={tag}
+              className="px-1.5 py-0.5 text-[10px] bg-dark-700 text-gray-400 rounded"
+            >
+              {tag}
+            </span>
+          ))}
+        </div>
+      )}
+    </div>
+  )
+}

src/hooks/index.ts

@@ -12,6 +12,8 @@ export type { Toast, ToastType } from './useToast'
 
 export { useMediaQuery, useIsMobile } from './useMediaQuery'
 
+export { useTheme } from './useTheme'
+
 // 待实现
 // export { useTerminal } from './useTerminal'
 // export { useConnection } from './useConnection'

src/hooks/useKeyboardShortcuts.ts

@@ -1,5 +1,5 @@
 /**
- * useKeyboardShortcuts - 全局快捷键管理 Hook
+ * useKeyboardShortcuts - 全局快捷键管理 Hook (v1.3.0)
  *
  * 在 App.tsx 挂载，处理全局键盘快捷键：
  * - Ctrl+Tab / Ctrl+Shift+Tab: 切换标签
@@ -7,10 +7,12 @@
  * - Ctrl+W: 关闭当前标签
  * - F11: 全屏切换
  * - Ctrl+Shift+N: 新建标签
+ * - Ctrl+Shift+P: 打开命令面板 (通过 commandPaletteStore)
  */
 
 import { useEffect } from 'react'
 import { useTabStore } from '../stores/tabStore'
+import { useCommandPaletteStore } from '../stores/commandPaletteStore'
 import { createLogger } from '../utils/logger'
 
 const logger = createLogger('KeyboardShortcuts')
@@ -37,6 +39,8 @@ function shouldSkipInInput(e: KeyboardEvent): boolean {
   if ((e.ctrlKey || e.metaKey) && e.key === 'Tab') return false
   // F11：始终生效
   if ( e.key === 'F11') return false
+  // Ctrl+Shift+P：命令面板始终生效
+  if ((e.ctrlKey || e.metaKey) && e.shiftKey && (e.key === 'p' || e.key === 'P')) return false
   // 其他快捷键在输入框中不触发
   return true
 }
@@ -46,6 +50,13 @@ export function useKeyboardShortcuts(): void {
     const handleKeyDown = (e: KeyboardEvent) => {
       const ctrlOrMeta = e.ctrlKey || e.metaKey
 
+      // ---- Ctrl+Shift+P: 切换命令面板 (通过 commandPaletteStore) ----
+      if (ctrlOrMeta && e.shiftKey && (e.key === 'p' || e.key === 'P')) {
+        e.preventDefault()
+        useCommandPaletteStore.getState().toggle()
+        return
+      }
+
       // ---- Ctrl+Tab: 切换到下一个标签 ----
       if (ctrlOrMeta && e.key === 'Tab' && !e.shiftKey) {
         e.preventDefault()

src/hooks/useTheme.ts

@@ -0,0 +1,76 @@
+import { useEffect, useMemo } from 'react'
+import { useSettingsStore } from '../stores/settingsStore'
+import { darkColors, lightColors, type AppThemeMode, type ColorMap } from '../themes/app-theme'
+
+/**
+ * Resolves the *effective* theme ('dark' | 'light') from the user preference,
+ * including the 'system' → prefers-color-scheme mapping.
+ */
+function resolveEffectiveTheme(preference: AppThemeMode): 'dark' | 'light' {
+  if (preference !== 'system') return preference
+  if (typeof window === 'undefined') return 'dark'
+  return window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light'
+}
+
+/**
+ * Apply a colour map to `document.documentElement` as CSS custom properties.
+ */
+function applyCSSVars(colors: ColorMap) {
+  const root = document.documentElement
+  for (const [key, value] of Object.entries(colors)) {
+    root.style.setProperty(`--color-${key}`, value)
+  }
+}
+
+/**
+ * useTheme — keeps the DOM in sync with the user's theme preference.
+ *
+ * • Reads `settings.theme` from the settings store.
+ * • Listens to `prefers-color-scheme` changes when set to 'system'.
+ * • Writes `data-theme="dark" | "light"` on `<html>`.
+ * • Writes `--color-*` CSS custom properties on `<html>`.
+ */
+export function useTheme() {
+  const theme = useSettingsStore((s) => s.settings.theme)
+  const isLoaded = useSettingsStore((s) => s.isLoaded)
+
+  const effective = useMemo(() => resolveEffectiveTheme(theme), [theme])
+
+  // Apply theme to DOM whenever effective theme changes
+  useEffect(() => {
+    if (!isLoaded) return
+
+    const colors = effective === 'dark' ? darkColors : lightColors
+
+    // Set data attribute for potential direct CSS selectors
+    document.documentElement.setAttribute('data-theme', effective)
+
+    // Apply CSS custom properties
+    applyCSSVars(colors)
+
+    // Update body bg & colour (mirrors index.css body rules but via vars)
+    document.body.style.backgroundColor = 'var(--color-dark-900)'
+    document.body.style.color = 'var(--color-text-primary)'
+  }, [effective, isLoaded])
+
+  // Listen for system colour-scheme changes when preference is 'system'
+  useEffect(() => {
+    if (theme !== 'system' || typeof window === 'undefined') return
+
+    const mql = window.matchMedia('(prefers-color-scheme: dark)')
+
+    const handler = (e: MediaQueryListEvent) => {
+      const newEffective = e.matches ? 'dark' : 'light'
+      const colors = e.matches ? darkColors : lightColors
+      document.documentElement.setAttribute('data-theme', newEffective)
+      applyCSSVars(colors)
+      document.body.style.backgroundColor = 'var(--color-dark-900)'
+      document.body.style.color = 'var(--color-text-primary)'
+    }
+
+    mql.addEventListener('change', handler)
+    return () => mql.removeEventListener('change', handler)
+  }, [theme])
+
+  return { theme, effective }
+}

src/index.css

@@ -2,6 +2,64 @@
 @tailwind components;
 @tailwind utilities;
 
+/* ===================================================================
+ * OpsXShell v1.3.0 — Theme CSS Variables
+ *
+ * The default (no data-theme attribute) keeps dark mode as before so
+ * that the very first paint looks correct even before React hydrates.
+ * useTheme.ts will immediately set data-theme + override vars on mount.
+ * =================================================================== */
+
+:root {
+  /* ---- Dark (default, matches original hard-coded values) ---- */
+  --color-dark-900: #0f172a;
+  --color-dark-800: #1e293b;
+  --color-dark-700: #334155;
+  --color-dark-600: #475569;
+
+  --color-text-primary:   #e2e8f0;
+  --color-text-secondary: #cbd5e1;
+  --color-text-muted:     #94a3b8;
+  --color-text-faint:     #64748b;
+  --color-text-dim:       #475569;
+
+  --color-accent-blue:   #3b82f6;
+  --color-accent-green:  #10b981;
+  --color-accent-purple: #8b5cf6;
+  --color-accent-orange: #f97316;
+
+  --color-scrollbar-track:   #1e293b;
+  --color-scrollbar-thumb:   #475569;
+  --color-scrollbar-thumb-h: #64748b;
+
+  --color-terminal-bg: #0f172a;
+}
+
+/* ---- Light theme ---- */
+:root[data-theme='light'] {
+  --color-dark-900: #ffffff;
+  --color-dark-800: #f3f4f6;
+  --color-dark-700: #e5e7eb;
+  --color-dark-600: #d1d5db;
+
+  --color-text-primary:   #1f2937;
+  --color-text-secondary: #374151;
+  --color-text-muted:     #6b7280;
+  --color-text-faint:     #9ca3af;
+  --color-text-dim:       #d1d5db;
+
+  --color-accent-blue:   #2563eb;
+  --color-accent-green:  #059669;
+  --color-accent-purple: #7c3aed;
+  --color-accent-orange: #ea580c;
+
+  --color-scrollbar-track:   #f3f4f6;
+  --color-scrollbar-thumb:   #d1d5db;
+  --color-scrollbar-thumb-h: #9ca3af;
+
+  --color-terminal-bg: #ffffff;
+}
+
 * {
   margin: 0;
   padding: 0;
@@ -14,8 +72,8 @@ body {
     sans-serif;
   -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;
-  background-color: #0f172a;
-  color: #e2e8f0;
+  background-color: var(--color-dark-900);
+  color: var(--color-text-primary);
   overflow: hidden;
 }
 
@@ -31,21 +89,21 @@ body {
 }
 
 ::-webkit-scrollbar-track {
-  background: #1e293b;
+  background: var(--color-scrollbar-track);
 }
 
 ::-webkit-scrollbar-thumb {
-  background: #475569;
+  background: var(--color-scrollbar-thumb);
   border-radius: 4px;
 }
 
 ::-webkit-scrollbar-thumb:hover {
-  background: #64748b;
+  background: var(--color-scrollbar-thumb-h);
 }
 
 /* Terminal styles */
 .terminal-container {
-  background-color: #0f172a;
+  background-color: var(--color-terminal-bg);
   padding: 8px;
   border-radius: 4px;
   height: 100%;

src/stores/commandPaletteStore.ts

@@ -0,0 +1,29 @@
+/**
+ * CommandPaletteStore — 命令面板状态管理
+ *
+ * 管理 VS Code 风格命令面板 (Ctrl+Shift+P) 的开关状态
+ * 与 UI 组件解耦，任何组件都可触发打开/关闭
+ */
+
+import { create } from 'zustand'
+
+interface CommandPaletteState {
+  isOpen: boolean
+
+  // Actions
+  open: () => void
+  close: () => void
+  toggle: () => void
+}
+
+export const useCommandPaletteStore = create<CommandPaletteState>((set) => ({
+  isOpen: false,
+
+  open: () => set({ isOpen: true }),
+
+  close: () => set({ isOpen: false }),
+
+  toggle: () => set((state) => ({ isOpen: !state.isOpen })),
+}))
+
+export default useCommandPaletteStore

src/stores/connectionPanelStore.ts

@@ -0,0 +1,19 @@
+/**
+ * Connection Panel Store - 连接面板开关状态
+ */
+
+import { create } from 'zustand'
+
+interface ConnectionPanelState {
+  isOpen: boolean
+  open: () => void
+  close: () => void
+  toggle: () => void
+}
+
+export const useConnectionPanelStore = create<ConnectionPanelState>((set) => ({
+  isOpen: false,
+  open: () => set({ isOpen: true }),
+  close: () => set({ isOpen: false }),
+  toggle: () => set((s) => ({ isOpen: !s.isOpen })),
+}))

src/stores/index.ts

@@ -18,5 +18,12 @@ export {
   getSessionConfig,
 } from './connection'
 
+// 命令片段
+export { useSnippetStore } from './snippetStore'
+export type { Snippet } from './snippetStore'
+
+// 命令面板
+export { useCommandPaletteStore } from './commandPaletteStore'
+
 // 类型导出
 export type { ConnectionState } from './connection'

src/stores/snippetStore.ts

@@ -0,0 +1,112 @@
+/**
+ * SnippetStore — 命令片段库状态管理
+ *
+ * 管理用户保存的常用命令片段，支持 CRUD 和搜索
+ * 数据通过 electronAPI.settingsGet/settingsSet 持久化
+ */
+
+import { create } from 'zustand'
+import { createLogger } from '../utils/logger'
+
+const logger = createLogger('SnippetStore')
+
+export interface Snippet {
+  id: string
+  name: string
+  content: string
+  tags: string[]
+  createdAt: number
+  updatedAt: number
+}
+
+interface SnippetState {
+  snippets: Snippet[]
+  isLoaded: boolean
+
+  // Actions
+  loadSnippets: () => Promise<void>
+  addSnippet: (name: string, content: string, tags?: string[]) => Promise<void>
+  updateSnippet: (id: string, updates: Partial<Pick<Snippet, 'name' | 'content' | 'tags'>>) => Promise<void>
+  deleteSnippet: (id: string) => Promise<void>
+  searchSnippets: (query: string) => Snippet[]
+}
+
+/** 持久化到 settings 的 key */
+const STORAGE_KEY = 'snippets'
+
+/** 生成唯一 ID */
+function generateId(): string {
+  return `snippet-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`
+}
+
+/** 将片段数据保存到 electron settings */
+async function persistSnippets(snippets: Snippet[]): Promise<void> {
+  try {
+    await window.electronAPI?.settingsSet(STORAGE_KEY, snippets)
+  } catch (error) {
+    logger.error('Failed to persist snippets', error)
+  }
+}
+
+export const useSnippetStore = create<SnippetState>((set, get) => ({
+  snippets: [],
+  isLoaded: false,
+
+  loadSnippets: async () => {
+    try {
+      const result = await window.electronAPI?.settingsGet(STORAGE_KEY)
+      if (result?.success && Array.isArray(result.value)) {
+        set({ snippets: result.value as Snippet[], isLoaded: true })
+      } else {
+        set({ isLoaded: true })
+      }
+    } catch (error) {
+      logger.error('Failed to load snippets', error)
+      set({ isLoaded: true })
+    }
+  },
+
+  addSnippet: async (name, content, tags = []) => {
+    const now = Date.now()
+    const snippet: Snippet = {
+      id: generateId(),
+      name,
+      content,
+      tags,
+      createdAt: now,
+      updatedAt: now,
+    }
+    const snippets = [...get().snippets, snippet]
+    set({ snippets })
+    await persistSnippets(snippets)
+  },
+
+  updateSnippet: async (id, updates) => {
+    const snippets = get().snippets.map((s) =>
+      s.id === id
+        ? { ...s, ...updates, updatedAt: Date.now() }
+        : s
+    )
+    set({ snippets })
+    await persistSnippets(snippets)
+  },
+
+  deleteSnippet: async (id) => {
+    const snippets = get().snippets.filter((s) => s.id !== id)
+    set({ snippets })
+    await persistSnippets(snippets)
+  },
+
+  searchSnippets: (query) => {
+    const { snippets } = get()
+    if (!query.trim()) return snippets
+
+    const lowerQuery = query.toLowerCase().trim()
+    return snippets.filter(
+      (s) =>
+        s.name.toLowerCase().includes(lowerQuery) ||
+        s.content.toLowerCase().includes(lowerQuery) ||
+        s.tags.some((tag) => tag.toLowerCase().includes(lowerQuery))
+    )
+  },
+}))

src/themes/app-theme.ts

@@ -0,0 +1,90 @@
+/**
+ * OpsXShell v1.3.0 — App Theme System
+ *
+ * CSS-variable-driven theme definitions for Dark / Light / System modes.
+ * Terminal themes (terminal.ts) remain independent — this only covers the
+ * Chrome / UI layer.
+ *
+ * Design references:
+ *  - Dark:  existing slate-blue palette
+ *  - Light: VS Code Light+ inspired — white canvas, soft grey borders, blue accent
+ */
+
+// ---------------------------------------------------------------------------
+// Types
+// ---------------------------------------------------------------------------
+
+export type AppThemeMode = 'dark' | 'light' | 'system'
+
+/** Flat map of CSS custom-property suffix → colour value. */
+export type ColorMap = Record<string, string>
+
+// ---------------------------------------------------------------------------
+// Dark palette  (unchanged from original hard-coded values)
+// ---------------------------------------------------------------------------
+
+export const darkColors: ColorMap = {
+  // Background surfaces  (deepest → shallowest)
+  'dark-900': '#0f172a',
+  'dark-800': '#1e293b',
+  'dark-700': '#334155',
+  'dark-600': '#475569',
+
+  // Text
+  'text-primary':   '#e2e8f0',  // gray-200
+  'text-secondary': '#cbd5e1',  // gray-300
+  'text-muted':     '#94a3b8',  // gray-400
+  'text-faint':     '#64748b',  // gray-500
+  'text-dim':       '#475569',  // gray-600
+
+  // Accent
+  'accent-blue':   '#3b82f6',
+  'accent-green':  '#10b981',
+  'accent-purple': '#8b5cf6',
+  'accent-orange': '#f97316',
+
+  // UI chrome
+  'scrollbar-track':    '#1e293b',
+  'scrollbar-thumb':    '#475569',
+  'scrollbar-thumb-h':  '#64748b',
+}
+
+// ---------------------------------------------------------------------------
+// Light palette  (VS Code Light+ inspired)
+// ---------------------------------------------------------------------------
+
+export const lightColors: ColorMap = {
+  // Background surfaces
+  'dark-900': '#ffffff',
+  'dark-800': '#f3f4f6',   // gray-100
+  'dark-700': '#e5e7eb',   // gray-200
+  'dark-600': '#d1d5db',   // gray-300
+
+  // Text
+  'text-primary':   '#1f2937',  // gray-800
+  'text-secondary': '#374151',  // gray-700
+  'text-muted':     '#6b7280',  // gray-500
+  'text-faint':     '#9ca3af',  // gray-400
+  'text-dim':       '#d1d5db',  // gray-300
+
+  // Accent (kept the same hue family, slightly adjusted for light bg)
+  'accent-blue':   '#2563eb',
+  'accent-green':  '#059669',
+  'accent-purple': '#7c3aed',
+  'accent-orange': '#ea580c',
+
+  // UI chrome
+  'scrollbar-track':    '#f3f4f6',
+  'scrollbar-thumb':    '#d1d5db',
+  'scrollbar-thumb-h':  '#9ca3af',
+}
+
+// ---------------------------------------------------------------------------
+// Helper: build a CSS-variable block string for injection
+// ---------------------------------------------------------------------------
+
+export function buildCSSVars(colors: ColorMap): string {
+  return Object.entries(colors)
+    .map(([key, value]) => `  --color-${key}: ${value};`)
+    .join('\n')
+}

tailwind.config.js

@@ -7,18 +7,20 @@ export default {
   theme: {
     extend: {
       colors: {
+        // Background surfaces — driven by CSS custom properties set per theme
         dark: {
-          900: '#0f172a',
-          800: '#1e293b',
-          700: '#334155',
-          600: '#475569',
+          900: 'var(--color-dark-900)',
+          800: 'var(--color-dark-800)',
+          700: 'var(--color-dark-700)',
+          600: 'var(--color-dark-600)',
         },
         accent: {
-          blue: '#3b82f6',
-          green: '#10b981',
-          purple: '#8b5cf6',
-        }
-      }
+          blue:   'var(--color-accent-blue)',
+          green:  'var(--color-accent-green)',
+          purple: 'var(--color-accent-purple)',
+          orange: 'var(--color-accent-orange)',
+        },
+      },
     },
   },
   plugins: [],

vite.config.ts

@@ -9,6 +9,16 @@ export default defineConfig({
   build: {
     outDir: 'dist',
     emptyOutDir: true,
+    rollupOptions: {
+      output: {
+        manualChunks: {
+          'vendor-xterm': ['@xterm/xterm', '@xterm/addon-fit', '@xterm/addon-search', '@xterm/addon-webgl'],
+          'vendor-react': ['react', 'react-dom'],
+          'vendor-lucide': ['lucide-react'],
+          'vendor-zustand': ['zustand'],
+        },
+      },
+    },
   },
   resolve: {
     alias: {