feat: initialize ZCLAW project with core systems and Tauri desktop

- Created backend core systems:
  - Remote Execution System (远程执行系统)
  - Task Orchestration Engine (任务编排引擎)
  - Persistent Memory System (持续记忆系统)
  - Proactive Service System (主动服务系统)

- Created Tauri desktop app:
  - Three-column layout based on AutoClaw design
  - React + TypeScript + Tailwind CSS
  - Zustand state management
  - Lucide React icons

- Components:
  - Sidebar (Agent list, IM channels, scheduled tasks)
  - ChatArea (Chat interface with message bubbles)
  - RightPanel (Task progress, statistics, next actions)

Next: Test Tauri dev server and integrate with OpenClaw backend

desktop/src/components/ChatArea.tsx

@@ -0,0 +1,112 @@
+import { useState } from 'react';
+import { useChatStore } from '../store/chatStore';
+import { Send, Paperclip, ChevronDown } from 'lucide-react';
+
+export function ChatArea() {
+  const { messages, currentAgent, addMessage } = useChatStore();
+  const [input, setInput] = useState('');
+
+  const sendMessage = () => {
+    if (!input.trim()) return;
+
+    const userMessage = {
+      id: Date.now().toString(),
+      role: 'user' as const,
+      content: input,
+      timestamp: new Date(),
+    };
+
+    addMessage(userMessage);
+    setInput('');
+
+    // TODO: 调用后端 API
+    setTimeout(() => {
+      const aiMessage = {
+        id: (Date.now() + 1).toString(),
+        role: 'assistant' as const,
+        content: '收到你的消息了！正在处理中...',
+        timestamp: new Date(),
+      };
+      addMessage(aiMessage);
+    }, 1000);
+  };
+
+  return (
+    <>
+      {/* 顶部标题栏 */}
+      <div className="h-14 border-b border-gray-100 flex items-center justify-between px-6 flex-shrink-0">
+        <div className="flex items-center gap-2">
+          <h2 className="font-semibold text-gray-900">{currentAgent?.name || 'ZCLAW'}</h2>
+          <span className="text-xs text-gray-400 flex items-center gap-1">
+            <span className="w-1.5 h-1.5 bg-green-400 rounded-full"></span>
+            在线
+          </span>
+        </div>
+      </div>
+
+      {/* 聊天内容区 */}
+      <div className="flex-1 overflow-y-auto custom-scrollbar p-6 space-y-6">
+        {messages.length === 0 && (
+          <div className="text-center text-gray-400 py-20">
+            <p className="text-lg mb-2">欢迎使用 ZCLAW 🦞</p>
+            <p className="text-sm">发送消息开始对话</p>
+          </div>
+        )}
+        
+        {messages.map((message) => (
+          <div
+            key={message.id}
+            className={lex gap-4 }
+          >
+            <div
+              className={w-8 h-8 rounded-lg flex items-center justify-center flex-shrink-0 }
+            >
+              {message.role === 'user' ? '用' : '🦞'}
+            </div>
+            <div className={message.role === 'user' ? 'max-w-2xl' : 'flex-1 max-w-3xl'}>
+              <div className={message.role === 'user' ? 'chat-bubble-user p-4 shadow-md' : 'chat-bubble-assistant p-4 shadow-sm'}>
+                <p className="leading-relaxed text-gray-700">{message.content}</p>
+              </div>
+            </div>
+          </div>
+        ))}
+      </div>
+
+      {/* 底部输入区 */}
+      <div className="border-t border-gray-100 p-4 bg-white">
+        <div className="max-w-4xl mx-auto">
+          <div className="relative flex items-end gap-2 bg-gray-50 rounded-2xl border border-gray-200 p-2 focus-within:border-orange-300 focus-within:ring-2 focus-within:ring-orange-100 transition-all">
+            <button className="p-2 text-gray-400 hover:text-gray-600 rounded-lg">
+              <Paperclip className="w-5 h-5" />
+            </button>
+            <div className="flex-1 py-2">
+              <input
+                type="text"
+                value={input}
+                onChange={(e) => setInput(e.target.value)}
+                onKeyPress={(e) => e.key === 'Enter' && sendMessage()}
+                placeholder="发送给 ZCLAW"
+                className="w-full bg-transparent border-none focus:outline-none text-gray-700 placeholder-gray-400"
+              />
+            </div>
+            <div className="flex items-center gap-2 pr-2 pb-1">
+              <button className="flex items-center gap-1 px-2 py-1 text-xs text-gray-500 hover:bg-gray-200 rounded-md transition-colors">
+                <span>glm5</span>
+                <ChevronDown className="w-3 h-3" />
+              </button>
+              <button
+                onClick={sendMessage}
+                className="w-8 h-8 bg-gray-900 text-white rounded-full flex items-center justify-center hover:bg-gray-800 transition-colors"
+              >
+                <Send className="w-4 h-4" />
+              </button>
+            </div>
+          </div>
+          <div className="text-center mt-2 text-xs text-gray-400">
+            Agent 在本地运行，内容由 AI 生成
+          </div>
+        </div>
+      </div>
+    </>
+  );
+}