diff --git a/web/package.json b/web/package.json
index ec2eb84..0684586 100644
--- a/web/package.json
+++ b/web/package.json
@@ -13,7 +13,9 @@
     "@vue-office/excel": "^1.7.14",
     "echarts": "^6.0.0",
     "element-plus": "^2.13.3",
+    "lucide-vue-next": "^0.577.0",
     "marked": "^17.0.4",
+    "monaco-editor": "^0.55.1",
     "papaparse": "^5.5.3",
     "pinia": "^2.1.7",
     "vue": "^3.4.21",
@@ -28,6 +30,7 @@
     "tailwindcss": "^3.4.3",
     "typescript": "^5.4.3",
     "vite": "^5.2.8",
+    "vite-plugin-monaco-editor": "^1.1.0",
     "vue-tsc": "^2.0.7"
   }
 }
diff --git a/web/src/App.vue b/web/src/App.vue
index e38e239..648c573 100644
--- a/web/src/App.vue
+++ b/web/src/App.vue
@@ -5,7 +5,7 @@ import { ElConfigProvider } from 'element-plus'
 import Sidebar from '@/components/Sidebar.vue'
 
 const route = useRoute()
-const showSidebar = computed(() => route.path !== '/')
+const showSidebar = computed(() => route.path !== '/login' && route.path !== '/' && route.path !== '/signup')
 </script>
 
 <template>
diff --git a/web/src/components/Sidebar.vue b/web/src/components/Sidebar.vue
index 880685f..b1635d3 100644
--- a/web/src/components/Sidebar.vue
+++ b/web/src/components/Sidebar.vue
@@ -1,16 +1,33 @@
 <script setup lang="ts">
 import { computed, ref, onMounted } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
-import { ElMessageBox } from 'element-plus'
 import { fetchKnowledgeBases } from '@/views/knowledge/useKnowledge'
 import { useDatabase } from '@/views/database/useDatabase'
+import { useAuth } from '@/composables/useAuth'
 
 // 下拉菜单展开状态
 const userDropdownVisible = ref(false)
 
+// 退出确认弹窗状态
+const showLogoutConfirm = ref(false)
+
 const router = useRouter()
 const route = useRoute()
 
+// 获取当前用户信息
+const { getUser, logout: authLogout } = useAuth()
+const currentUser = ref(getUser())
+
+// 计算用户首字母缩写
+const userInitials = computed(() => {
+  const name = currentUser.value?.username || currentUser.value?.name || 'User'
+  const parts = name.split(' ')
+  if (parts.length >= 2) {
+    return (parts[0][0] + parts[1][0]).toUpperCase()
+  }
+  return name.substring(0, 2).toUpperCase()
+})
+
 // 获取 Knowledge 数量
 const knowledgeCount = ref(0)
 const fetchKnowledgeCount = async () => {
@@ -60,11 +77,11 @@ const group3 = computed(() => [
   { name: 'Memory', icon: 'fa-brain', path: '/memory' },
 ])
 
-// 第4组: Dashboard, Account, Settings
+// 第4组: Dashboard, Models, Logs
 const group4 = computed(() => [
   { name: 'Dashboard', icon: 'fa-gauge', path: '/dashboard' },
-  { name: 'Account', icon: 'fa-user', path: '/account' },
-  { name: 'Settings', icon: 'fa-gear', path: '/settings' },
+  { name: 'Models', icon: 'fa-brain', path: '/settings' },
+  { name: 'Logs', icon: 'fa-file-lines', path: '/logs' },
 ])
 
 const activeMenu = computed(() => {
@@ -83,31 +100,43 @@ const navigateTo = (item: MenuItem) => {
   }
 }
 
+// 通知设置弹窗状态
+const showNotificationSettings = ref(false)
+
 // 用户菜单操作
 const handleUserCommand = (command: string) => {
   switch (command) {
-    case 'settings':
-      // 全局设置
-      router.push('/settings')
+    case 'notifications':
+      // 通知设置
+      showNotificationSettings.value = true
+      break
+    case 'account':
+      // 账户设置
+      router.push('/account')
       break
     case 'userManagement':
       // 用户管理
       router.push('/user-management')
       break
     case 'logout':
-      // 退出登录
-      ElMessageBox.confirm('确定要退出登录吗？', '提示', {
-        confirmButtonText: '确定',
-        cancelButtonText: '取消',
-        type: 'warning',
-      }).then(() => {
-        // 清除登录状态
-        localStorage.removeItem('token')
-        router.push('/login')
-      }).catch(() => {})
+      // 退出登录 - 显示自定义确认弹窗
+      showLogoutConfirm.value = true
       break
   }
 }
+
+// 确认退出登录
+const confirmLogout = () => {
+  showLogoutConfirm.value = false
+  userDropdownVisible.value = false
+  authLogout()
+  router.push('/login')
+}
+
+// 取消退出
+const cancelLogout = () => {
+  showLogoutConfirm.value = false
+}
 </script>
 
 <template>
@@ -186,7 +215,7 @@ const handleUserCommand = (command: string) => {
         <!-- 分隔线3 -->
         <li class="my-4 border-t border-dark-500"></li>
 
-        <!-- 第4组: Dashboard, Account, Settings -->
+        <!-- 第4组: Dashboard, Notifications, Account, Model Settings, Logs -->
         <li v-for="item in group4" :key="item.name">
           <a
             href="javascript:void(0)"
@@ -198,11 +227,6 @@ const handleUserCommand = (command: string) => {
               <i :class="['fa-solid', item.icon, 'w-5', 'text-center']"></i>
               <span>{{ item.name }}</span>
             </div>
-            <div v-if="item.name === 'Settings'" class="flex gap-1">
-              <span class="w-2 h-2 rounded-full bg-primary-orange"></span>
-              <span class="w-2 h-2 rounded-full bg-yellow-500"></span>
-              <span class="w-2 h-2 rounded-full bg-gray-500"></span>
-            </div>
           </a>
         </li>
       </ul>
@@ -210,65 +234,218 @@ const handleUserCommand = (command: string) => {
 
     <!-- 底部用户信息 -->
     <div class="border-t border-dark-500">
-      <el-dropdown trigger="click" @command="handleUserCommand" class="user-dropdown" @visible-change="(v: boolean) => userDropdownVisible = v">
-        <div class="w-full flex items-center justify-between cursor-pointer hover:bg-dark-600 px-4 py-3 transition-colors">
+      <div class="relative">
+        <div
+          class="w-full flex items-center justify-between cursor-pointer hover:bg-dark-600 px-4 py-3 transition-colors"
+          @click="userDropdownVisible = !userDropdownVisible"
+        >
           <div class="flex items-center gap-3">
-            <img src="https://picsum.photos/id/64/40/40" alt="User Avatar" class="w-8 h-8 rounded-full object-cover">
+            <div class="w-8 h-8 rounded-full bg-gradient-to-br from-primary-orange to-red-500 flex items-center justify-center text-white font-medium text-xs">
+              {{ userInitials }}
+            </div>
             <div class="min-w-0">
-              <div class="font-medium text-sm text-gray-300 truncate">Alex Smith</div>
-              <div class="text-xs text-gray-500 truncate">alex@gmail.com</div>
+              <div class="font-medium text-sm text-gray-200 truncate">{{ currentUser?.username || currentUser?.name || 'User' }}</div>
+              <div class="text-xs text-gray-500 truncate">{{ currentUser?.email || 'user@example.com' }}</div>
             </div>
           </div>
           <i :class="['fa-solid', userDropdownVisible ? 'fa-chevron-up' : 'fa-chevron-down', 'text-xs', 'text-gray-500']"></i>
         </div>
-        <template #dropdown>
-          <el-dropdown-menu>
-            <el-dropdown-item command="settings">
-              <i class="fa-solid fa-gear w-4 text-center"></i>
-              Settings
-            </el-dropdown-item>
-            <el-dropdown-item command="userManagement">
-              <i class="fa-solid fa-user w-4 text-center"></i>
-              Users
-            </el-dropdown-item>
-            <el-dropdown-item divided command="logout">
-              <i class="fa-solid fa-arrow-right-from-bracket w-4 text-center"></i>
-              Sign Out
-            </el-dropdown-item>
-          </el-dropdown-menu>
-        </template>
-      </el-dropdown>
+
+        <!-- 简洁下拉弹窗 -->
+        <Transition name="dropdown-fade">
+          <div v-if="userDropdownVisible" class="user-dropdown-panel" @click.stop>
+            <div class="dropdown-menu">
+              <div class="menu-item" @click="handleUserCommand('notifications')">
+                <i class="fa-solid fa-bell text-gray-400"></i>
+                <span class="text-gray-300">Notifications</span>
+              </div>
+
+              <div class="menu-item" @click="handleUserCommand('account')">
+                <i class="fa-solid fa-user text-gray-400"></i>
+                <span class="text-gray-300">Account</span>
+              </div>
+
+              <div class="menu-item">
+                <i class="fa-solid fa-circle-question text-gray-400"></i>
+                <span class="text-gray-300">Help & Support</span>
+              </div>
+            </div>
+
+            <div class="dropdown-divider"></div>
+
+            <div class="dropdown-footer">
+              <div class="menu-item logout" @click="handleUserCommand('logout')">
+                <i class="fa-solid fa-arrow-right-from-bracket text-gray-400"></i>
+                <span class="text-gray-300">Sign Out</span>
+              </div>
+            </div>
+          </div>
+        </Transition>
+      </div>
+
+      <!-- 点击外部关闭 -->
+      <div v-if="userDropdownVisible" class="fixed inset-0 z-40" @click="userDropdownVisible = false"></div>
     </div>
   </aside>
+
+  <!-- 退出确认弹窗 -->
+  <Teleport to="body">
+    <Transition name="fade">
+      <div v-if="showLogoutConfirm" class="fixed inset-0 bg-black/60 flex items-center justify-center z-50" @click="cancelLogout">
+        <div class="bg-dark-700 rounded-xl w-full max-w-sm border border-dark-500 shadow-2xl" @click.stop>
+          <div class="p-6 text-center">
+            <div class="w-14 h-14 rounded-full bg-red-500/20 flex items-center justify-center mx-auto mb-4">
+              <i class="fa-solid fa-arrow-right-from-bracket text-red-400 text-xl"></i>
+            </div>
+            <h3 class="text-lg font-semibold text-white mb-2">Sign Out</h3>
+            <p class="text-gray-400 text-sm">Are you sure you want to sign out?</p>
+          </div>
+          <div class="flex border-t border-dark-500">
+            <button @click="cancelLogout" class="flex-1 py-3 text-gray-400 hover:text-white hover:bg-dark-600 transition-colors">
+              Cancel
+            </button>
+            <button @click="confirmLogout" class="flex-1 py-3 text-red-400 hover:bg-red-500/10 transition-colors border-l border-dark-500">
+              Sign Out
+            </button>
+          </div>
+        </div>
+      </div>
+    </Transition>
+  </Teleport>
+
+  <!-- 通知设置弹窗 -->
+  <Teleport to="body">
+    <Transition name="fade">
+      <div v-if="showNotificationSettings" class="fixed inset-0 bg-black/60 flex items-center justify-center z-50" @click="showNotificationSettings = false">
+        <div class="bg-dark-700 rounded-xl w-full max-w-md border border-dark-500 shadow-2xl" @click.stop>
+          <div class="flex items-center justify-between p-5 border-b border-dark-500">
+            <h3 class="text-lg font-semibold">Notification Settings</h3>
+            <button @click="showNotificationSettings = false" class="text-gray-400 hover:text-white transition-colors">
+              <i class="fa-solid fa-xmark text-xl"></i>
+            </button>
+          </div>
+          <div class="p-5 space-y-4">
+            <div class="flex items-center justify-between py-3 border-b border-dark-500">
+              <div>
+                <div class="font-medium text-white">Email Notifications</div>
+                <div class="text-sm text-gray-400">Receive email for important updates</div>
+              </div>
+              <label class="relative inline-flex items-center cursor-pointer">
+                <input type="checkbox" class="sr-only peer" checked>
+                <div class="w-11 h-6 bg-dark-500 peer-focus:outline-none rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-primary-orange"></div>
+              </label>
+            </div>
+            <div class="flex items-center justify-between py-3 border-b border-dark-500">
+              <div>
+                <div class="font-medium text-white">Push Notifications</div>
+                <div class="text-sm text-gray-400">Receive push notifications in browser</div>
+              </div>
+              <label class="relative inline-flex items-center cursor-pointer">
+                <input type="checkbox" class="sr-only peer" checked>
+                <div class="w-11 h-6 bg-dark-500 peer-focus:outline-none rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-primary-orange"></div>
+              </label>
+            </div>
+            <div class="flex items-center justify-between py-3 border-b border-dark-500">
+              <div>
+                <div class="font-medium text-white">System Alerts</div>
+                <div class="text-sm text-gray-400">Get notified about system events</div>
+              </div>
+              <label class="relative inline-flex items-center cursor-pointer">
+                <input type="checkbox" class="sr-only peer" checked>
+                <div class="w-11 h-6 bg-dark-500 peer-focus:outline-none rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-primary-orange"></div>
+              </label>
+            </div>
+            <div class="flex items-center justify-between py-3">
+              <div>
+                <div class="font-medium text-white">Agent Updates</div>
+                <div class="text-sm text-gray-400">Notifications about agent activities</div>
+              </div>
+              <label class="relative inline-flex items-center cursor-pointer">
+                <input type="checkbox" class="sr-only peer">
+                <div class="w-11 h-6 bg-dark-500 peer-focus:outline-none rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-primary-orange"></div>
+              </label>
+            </div>
+          </div>
+          <div class="flex items-center justify-end gap-3 p-5 border-t border-dark-500">
+            <button @click="showNotificationSettings = false" class="px-4 py-2 rounded-lg bg-primary-orange text-white hover:bg-orange-600 transition-colors">
+              Save Changes
+            </button>
+          </div>
+        </div>
+      </div>
+    </Transition>
+  </Teleport>
 </template>
 
 <style>
-.user-dropdown {
-  width: 100%;
-}
-.user-dropdown .el-dropdown-menu {
-  background-color: #262626;
-  border: none;
-  padding: 6px;
+/* 用户下拉弹窗 */
+.user-dropdown-panel {
+  position: absolute;
+  bottom: 100%;
+  left: 0;
+  right: 0;
+  margin-bottom: 8px;
+  background: #1f1f1f;
+  border: 1px solid #404040;
   border-radius: 10px;
-  min-width: 200px;
+  overflow: hidden;
+  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
+  z-index: 50;
 }
-.user-dropdown .el-dropdown-menu__item {
-  color: white;
-  padding: 8px 14px;
-  border-radius: 6px;
-  font-size: 13px;
+
+.dropdown-menu {
+  padding: 6px;
+}
+
+.menu-item {
   display: flex;
   align-items: center;
   gap: 10px;
+  padding: 8px 12px;
+  border-radius: 6px;
+  cursor: pointer;
+  transition: all 0.15s ease;
+  font-size: 13px;
 }
-.user-dropdown .el-dropdown-menu__item:hover {
-  background-color: #F97316;
-  color: white;
+
+.menu-item:hover {
+  background: #333;
 }
-.user-dropdown .el-dropdown-menu__item--divided {
-  border-top: 1px solid #404040;
-  margin-top: 4px;
-  padding-top: 8px;
+
+.dropdown-divider {
+  height: 1px;
+  background: #333;
+  margin: 4px 8px;
+}
+
+.dropdown-footer {
+  padding: 6px;
+}
+
+.menu-item.logout:hover {
+  background: rgba(239, 68, 68, 0.15);
+}
+
+/* 下拉动画 */
+.dropdown-fade-enter-active,
+.dropdown-fade-leave-active {
+  transition: all 0.15s ease;
+}
+
+.dropdown-fade-enter-from,
+.dropdown-fade-leave-to {
+  opacity: 0;
+  transform: translateY(5px);
+}
+
+/* 退出确认弹窗动画 */
+.fade-enter-active,
+.fade-leave-active {
+  transition: all 0.2s ease;
+}
+
+.fade-enter-from,
+.fade-leave-to {
+  opacity: 0;
 }
 </style>
diff --git a/web/src/main.ts b/web/src/main.ts
index 4fd5cd6..9b5e920 100644
--- a/web/src/main.ts
+++ b/web/src/main.ts
@@ -1,4 +1,4 @@
-import { createApp } from 'vue'
+import { createApp, type Component } from 'vue'
 import { createPinia } from 'pinia'
 import ElementPlus from 'element-plus'
 import 'element-plus/dist/index.css'
@@ -6,8 +6,18 @@ import router from './router'
 import './assets/styles/index.css'
 import App from './App.vue'
 
+// 全局注册 Lucide 图标
+import * as iconModule from 'lucide-vue-next'
+
 const app = createApp(App)
 
+// 注册所有图标为全局组件（过滤非组件）
+for (const [name, icon] of Object.entries(iconModule)) {
+  if (typeof icon === 'object' && icon !== null && 'render' in icon) {
+    app.component(name, icon as Component)
+  }
+}
+
 app.use(createPinia())
 app.use(router)
 app.use(ElementPlus)
diff --git a/web/src/router/index.ts b/web/src/router/index.ts
index c8372e9..4f5059d 100644
--- a/web/src/router/index.ts
+++ b/web/src/router/index.ts
@@ -16,11 +16,23 @@ import Settings from '@/views/Settings.vue'
 import Account from '@/views/Account.vue'
 import Logs from '@/views/Logs.vue'
 
+// 需要登录才能访问的路由
+const protectedRoutes = ['/dashboard', '/chat', '/agents', '/team', '/mcp', '/tools', '/database', '/script', '/plan', '/memory', '/knowledge', '/settings', '/account', '/logs']
+
+// 检查是否已登录
+const isAuthenticated = () => {
+  return !!localStorage.getItem('token')
+}
+
 const router = createRouter({
   history: createWebHistory(import.meta.env.BASE_URL),
   routes: [
     {
       path: '/',
+      redirect: () => isAuthenticated() ? '/dashboard' : '/login'
+    },
+    {
+      path: '/login',
       name: 'login',
       component: Login
     },
@@ -102,4 +114,24 @@ const router = createRouter({
   ]
 })
 
+// 路由守卫
+router.beforeEach((to, from, next) => {
+  const isAuth = isAuthenticated()
+  const isLoginPage = to.path === '/login' || to.path === '/signup'
+
+  // 如果未登录且不是访问登录/注册页，跳转到登录页
+  if (!isAuth && !isLoginPage) {
+    next('/login')
+    return
+  }
+
+  // 如果已登录且访问登录/注册页，跳转到仪表盘
+  if (isAuth && isLoginPage) {
+    next('/dashboard')
+    return
+  }
+
+  next()
+})
+
 export default router
diff --git a/web/vite.config.ts b/web/vite.config.ts
index 37febd9..a2320be 100644
--- a/web/vite.config.ts
+++ b/web/vite.config.ts
@@ -1,9 +1,13 @@
 import { defineConfig } from 'vite'
 import vue from '@vitejs/plugin-vue'
 import { resolve } from 'path'
+import monacoEditorPlugin from 'vite-plugin-monaco-editor'
 
 export default defineConfig({
-  plugins: [vue()],
+  plugins: [
+    vue(),
+    (monacoEditorPlugin as any).default({})
+  ],
   resolve: {
     alias: {
       '@': resolve(__dirname, 'src')