refactor: convert admin console to SPA with dynamic component switching

- Create shell page (pages/admin/index.vue) with AdminLayout + keep-alive
- Convert 9 pages to view components (views/*.vue)
- AdminLayout emits navigate events instead of uni.redirectTo
- Sidebar navigation no longer causes full page reload
- List views cached with keep-alive, detail views re-mount fresh
- Fix: add name property to 5 cached views for keep-alive matching
- Fix: add navigationStyle custom to prevent double nav bar
- Fix: remove duplicate mounted() in RecordView/LogView

admin-console/src/components/AdminLayout.vue

@@ -6,10 +6,10 @@
       <view class="sidebar-menu">
         <view
           v-for="item in menuItems"
-          :key="item.path"
+          :key="item.view"
           class="sidebar-item"
-          :class="{ active: currentPage === item.path }"
-          @click="navigate(item.path)"
+          :class="{ active: currentPage === item.view }"
+          @click="navigate(item.view)"
         >
           <text class="sidebar-icon">{{ item.icon }}</text>
           <text>{{ item.label }}</text>
@@ -41,32 +41,32 @@ export default {
   data() {
     return {
       menuItems: [
-        { icon: '📊', label: '仪表盘', path: '/pages/dashboard/index' },
-        { icon: '📱', label: '设备管理', path: '/pages/device/index' },
-        { icon: '👥', label: '用户管理', path: '/pages/user/index' },
-        { icon: '💳', label: '订阅管理', path: '/pages/subscription/index' },
-        { icon: '📋', label: '护理记录', path: '/pages/record/index' },
-        { icon: '📝', label: '操作日志', path: '/pages/log/index' },
-        { icon: '⚙️', label: '系统设置', path: '/pages/settings/index' }
+        { icon: '📊', label: '仪表盘', view: 'dashboard' },
+        { icon: '📱', label: '设备管理', view: 'device' },
+        { icon: '👥', label: '用户管理', view: 'user' },
+        { icon: '💳', label: '订阅管理', view: 'subscription' },
+        { icon: '📋', label: '护理记录', view: 'record' },
+        { icon: '📝', label: '操作日志', view: 'log' },
+        { icon: '⚙️', label: '系统设置', view: 'settings' }
       ]
     }
   },
   computed: {
     pageTitle() {
-      const item = this.menuItems.find(m => m.path === this.currentPage)
-      return item ? `${item.icon} ${item.label}` : '光子美容仪管理后台'
+      var item = this.menuItems.find(m => m.view === this.currentPage)
+      return item ? item.icon + ' ' + item.label : '光子美容仪管理后台'
     },
     adminName() {
-      const store = useUserStore()
+      var store = useUserStore()
       return (store.adminInfo && store.adminInfo.real_name) || '管理员'
     }
   },
   methods: {
-    navigate(path) {
-      uni.redirectTo({ url: path })
+    navigate(view) {
+      this.$emit('navigate', view)
     },
     onLogout() {
-      const store = useUserStore()
+      var store = useUserStore()
       store.clearToken()
       uni.reLaunch({ url: '/pages/login/index' })
     }