diff --git a/src/App.tsx b/src/App.tsx
index 75583cb..b2feab3 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,123 +1,19 @@
-import { useEffect, useMemo, useState } from 'react'
-import axios from 'axios'
-import { io, Socket } from 'socket.io-client'
-import './App.css'
-
-type Health = { ok: boolean; service: string; database?: string }
-type MessageItem = {
-  messageId: string
-  seq: number
-  content: string
-  createdAt: string
-  isDeleted?: boolean
-}
-
-const API_BASE = import.meta.env.VITE_GUILD_API_BASE ?? 'http://localhost:7002/api'
-const SOCKET_BASE = import.meta.env.VITE_GUILD_SOCKET_BASE ?? 'http://localhost:7002/realtime'
-const API_KEY = import.meta.env.VITE_API_KEY ?? 'change-me-api-key'
-
-function App() {
-  const [health, setHealth] = useState<Health | null>(null)
-  const [channelId, setChannelId] = useState('')
-  const [messages, setMessages] = useState<MessageItem[]>([])
-  const [content, setContent] = useState('')
-  const [socketState, setSocketState] = useState<'offline' | 'online'>('offline')
-
-  const client = useMemo(
-    () =>
-      axios.create({
-        baseURL: API_BASE,
-        headers: { 'x-api-key': API_KEY },
-      }),
-    [],
-  )
-
-  useEffect(() => {
-    client.get('/healthz').then((res) => setHealth(res.data)).catch(() => setHealth(null))
-  }, [client])
-
-  useEffect(() => {
-    if (!channelId) return
-
-    const socket: Socket = io(SOCKET_BASE, {
-      transports: ['websocket'],
-      auth: { apiKey: API_KEY, userId: 'frontend-user' },
-      extraHeaders: { 'x-api-key': API_KEY },
-    })
-
-    socket.on('connect', () => {
-      setSocketState('online')
-      socket.emit('join_channel', { channelId })
-    })
-
-    socket.on('disconnect', () => setSocketState('offline'))
-    socket.on('message.created', (m) => setMessages((prev) => [...prev, m]))
-    socket.on('message.updated', (m) =>
-      setMessages((prev) => prev.map((x) => (x.messageId === m.messageId ? m : x))),
-    )
-    socket.on('message.deleted', (m) =>
-      setMessages((prev) =>
-        prev.map((x) => (x.messageId === m.messageId ? { ...x, isDeleted: true, content: '[deleted]' } : x)),
-      ),
-    )
-
-    return () => {
-      socket.emit('leave_channel', { channelId })
-      socket.disconnect()
-      setSocketState('offline')
-    }
-  }, [channelId])
-
-  async function pullMessages() {
-    if (!channelId) return
-    const res = await client.get(`/channels/${channelId}/messages`, {
-      params: { seq_from: 1, seq_to: 999999, limit: 100 },
-    })
-    setMessages(res.data.items ?? [])
-  }
-
-  async function sendMessage() {
-    if (!channelId || !content.trim()) return
-    await client.post(`/channels/${channelId}/messages`, {
-      content,
-      authorUserId: 'frontend-user',
-    })
-    setContent('')
-  }
+import { Navigate, Route, Routes } from 'react-router-dom'
+import AppLayout from './layouts/AppLayout'
+import ChatPage from './pages/ChatPage'
+import LoginPage from './pages/LoginPage'
+import WorkspacePage from './pages/WorkspacePage'
 
+export default function App() {
   return (
-    <main className="app">
-      <h1>Fabric Frontend</h1>
-      <p>Health: {health ? `${health.service} (${health.database ?? 'ok'})` : 'unavailable'}</p>
-      <p>Socket: {socketState}</p>
-
-      <section className="row">
-        <input
-          value={channelId}
-          onChange={(e) => setChannelId(e.target.value)}
-          placeholder="Channel ID"
-        />
-        <button onClick={pullMessages}>拉取消息</button>
-      </section>
-
-      <section className="row">
-        <input
-          value={content}
-          onChange={(e) => setContent(e.target.value)}
-          placeholder="输入消息"
-        />
-        <button onClick={sendMessage}>发送</button>
-      </section>
-
-      <ul className="messages">
-        {messages.map((m) => (
-          <li key={m.messageId}>
-            <span>#{m.seq}</span> <span>{m.content}</span>
-          </li>
-        ))}
-      </ul>
-    </main>
+    <Routes>
+      <Route path="/" element={<AppLayout />}>
+        <Route index element={<Navigate to="/workspace" replace />} />
+        <Route path="workspace" element={<WorkspacePage />} />
+        <Route path="chat" element={<ChatPage />} />
+        <Route path="login" element={<LoginPage />} />
+      </Route>
+      <Route path="*" element={<Navigate to="/workspace" replace />} />
+    </Routes>
   )
 }
-
-export default App
diff --git a/src/layouts/AppLayout.tsx b/src/layouts/AppLayout.tsx
new file mode 100644
index 0000000..a7142e3
--- /dev/null
+++ b/src/layouts/AppLayout.tsx
@@ -0,0 +1,19 @@
+import { Link, Outlet } from 'react-router-dom'
+
+export default function AppLayout() {
+  return (
+    <div style={{ display: 'grid', gridTemplateColumns: '220px 1fr', minHeight: '100vh' }}>
+      <aside style={{ borderRight: '1px solid #ddd', padding: 16 }}>
+        <h3>Fabric</h3>
+        <nav style={{ display: 'grid', gap: 8 }}>
+          <Link to="/workspace">工作台</Link>
+          <Link to="/chat">聊天</Link>
+          <Link to="/login">登录</Link>
+        </nav>
+      </aside>
+      <main style={{ padding: 16 }}>
+        <Outlet />
+      </main>
+    </div>
+  )
+}
diff --git a/src/main.tsx b/src/main.tsx
index bef5202..ade9d64 100644
--- a/src/main.tsx
+++ b/src/main.tsx
@@ -1,10 +1,13 @@
 import { StrictMode } from 'react'
 import { createRoot } from 'react-dom/client'
+import { BrowserRouter } from 'react-router-dom'
 import './index.css'
 import App from './App.tsx'
 
 createRoot(document.getElementById('root')!).render(
   <StrictMode>
-    <App />
+    <BrowserRouter>
+      <App />
+    </BrowserRouter>
   </StrictMode>,
 )
diff --git a/src/pages/ChatPage.tsx b/src/pages/ChatPage.tsx
new file mode 100644
index 0000000..61e825e
--- /dev/null
+++ b/src/pages/ChatPage.tsx
@@ -0,0 +1,8 @@
+export default function ChatPage() {
+  return (
+    <section>
+      <h2>聊天</h2>
+      <p>下一步接入消息拉取/发送/编辑/删除与实时订阅。</p>
+    </section>
+  )
+}
diff --git a/src/pages/LoginPage.tsx b/src/pages/LoginPage.tsx
new file mode 100644
index 0000000..262f3e3
--- /dev/null
+++ b/src/pages/LoginPage.tsx
@@ -0,0 +1,8 @@
+export default function LoginPage() {
+  return (
+    <section>
+      <h2>登录</h2>
+      <p>下一步接入 Center 登录与 token 管理。</p>
+    </section>
+  )
+}
diff --git a/src/pages/WorkspacePage.tsx b/src/pages/WorkspacePage.tsx
new file mode 100644
index 0000000..a9a6e26
--- /dev/null
+++ b/src/pages/WorkspacePage.tsx
@@ -0,0 +1,8 @@
+export default function WorkspacePage() {
+  return (
+    <section>
+      <h2>工作台</h2>
+      <p>这里会展示 Guild/Channel 概览与会话入口。</p>
+    </section>
+  )
+}