Split admin operations dashboard route

frontend/src/layouts/MainLayout.vue

@@ -1180,7 +1180,8 @@ const navigation = computed(() => {
      {
       title: '概览',
       items: [
-        { name: '运维总览', href: '/admin/dashboard', icon: Home },
+        { name: '仪表盘', href: '/admin/dashboard', icon: Home },
+        { name: '运维总览', href: '/admin/operations', icon: Activity },
         { name: '健康监控', href: '/admin/health-monitor', icon: Activity },
         { name: '用户统计', href: '/admin/user-stats', icon: BarChart3 },
         { name: '成本分析', href: '/admin/cost-analysis', icon: Gauge },

frontend/src/router/index.ts

@@ -169,6 +169,11 @@ const routes: RouteRecordRaw[] = [
       {
         path: 'dashboard',
         name: 'AdminDashboard',
+        component: () => importWithRetry(() => import('@/views/shared/Dashboard.vue'))
+      },
+      {
+        path: 'operations',
+        name: 'AdminOperationsDashboard',
         component: () => importWithRetry(() => import('@/views/admin/AdminOperationsDashboard.vue'))
       },
       {