feat(ui): 集成命令管理面板到 web 和 desktop

- 新增 CommandPanel 组件用于命令列表/搜索/CRUD
- 新增 CommandEditor 组件用于命令编辑/创建
- web/desktop 工具栏添加 Terminal 图标按钮
- 点击按钮打开命令管理面板

packages/web/src/pages/Chat.tsx

@@ -3,7 +3,7 @@
  */
 
 import { useEffect, useRef } from 'react';
-import { WifiOff, MessageSquare, Settings, FolderOpen } from 'lucide-react';
+import { WifiOff, MessageSquare, Settings, FolderOpen, Terminal } from 'lucide-react';
 import { motion, AnimatePresence } from 'framer-motion';
 import {
   useChat,
@@ -22,6 +22,7 @@ interface ChatPageProps {
   showFileBrowser?: boolean;
   onToggleFileBrowser?: () => void;
   onOpenConfig?: () => void;
+  onOpenCommands?: () => void;
 }
 
 export function ChatPage({
@@ -32,6 +33,7 @@ export function ChatPage({
   showFileBrowser,
   onToggleFileBrowser,
   onOpenConfig,
+  onOpenCommands,
 }: ChatPageProps) {
   const {
     messages,
@@ -126,8 +128,21 @@ export function ChatPage({
           <ConnectionStatus />
 
           {/* 工具栏按钮 */}
-          {(onOpenConfig || onToggleFileBrowser) && (
+          {(onOpenConfig || onToggleFileBrowser || onOpenCommands) && (
             <div className="flex items-center gap-1.5 border-l border-gray-600 pl-3">
+              {/* 命令按钮 */}
+              {onOpenCommands && (
+                <motion.button
+                  whileHover={{ scale: 1.1 }}
+                  whileTap={{ scale: 0.9 }}
+                  onClick={onOpenCommands}
+                  className="p-1.5 rounded-lg text-gray-400 hover:text-gray-200 hover:bg-gray-700 transition-colors"
+                  title="Commands"
+                >
+                  <Terminal size={20} />
+                </motion.button>
+              )}
+
               {/* 配置按钮 */}
               {onOpenConfig && (
                 <motion.button