task-283(后台迁移收尾/发布): admin-vue 后台工程入库 + Flask 后台整体退役

- 新后台 admin-frontend-vue 整工程入库(base=/admin-vue/、History 路由、Nginx 静态托管方案与 verify-dist 校验)
- Java AdminConsoleController 改为入口重定向: /admin|/admin.html、/login|/login.html -> /admin-vue/; 删除 classpath:static 旧 admin.html/login.html 单页与 admin.js 副本
- Flask 后台整体退役: 删除 admin_api/auth/main 蓝图、web_source 页面、static 脚本与 admin 相关测试; app.py 收敛为仅注册 version_bp(/api/version、/api/version/latest, 供桌面端更新检查)
- AdminApiGuardFilterTest 豁免样例路径 /admin.html -> /admin-vue/

admin-frontend-vue/src/pages/account/MenusPage.vue

@@ -24,13 +24,18 @@ const loading = ref(false)
 const rows = ref<MenuManageNode[]>([])
 // 客户端分页：列表展示统一带分页组件。
 const page = ref(1)
-const pageSize = 10
+const pageSize = ref(10)
 const total = computed(() => rows.value.length)
-const pagedRows = computed(() => rows.value.slice((page.value - 1) * pageSize, page.value * pageSize))
+const pagedRows = computed(() => rows.value.slice((page.value - 1) * pageSize.value, page.value * pageSize.value))
 
 function changePage(p: number) {
   page.value = p
 }
+
+function changeSize(size: number) {
+  pageSize.value = size
+  page.value = 1
+}
 const createVisible = ref(false)
 const saving = ref(false)
 const editingNode = ref<MenuManageNode | null>(null)
@@ -186,10 +191,12 @@ onMounted(loadMenus)
         <h2>菜单管理</h2>
         <p>维护后台菜单树和页面路由。权限粒度仅到菜单/页面。</p>
       </div>
-      <el-button type="primary" @click="openCreate">新增菜单</el-button>
     </div>
     <el-card shadow="never">
       <p class="menu-drag-tip">拖动每行左侧的手柄可调整同级菜单的显示顺序，松开后自动保存。</p>
+      <div class="table-toolbar">
+        <el-button type="primary" @click="openCreate">新增菜单</el-button>
+      </div>
       <el-table v-loading="loading" :data="pagedRows" row-key="id" default-expand-all stripe>
         <el-table-column label="排序" min-width="64">
           <template #default="{ row }">
@@ -205,7 +212,6 @@ onMounted(loadMenus)
             >⠿</span>
           </template>
         </el-table-column>
-        <el-table-column prop="id" label="ID" min-width="70" />
         <el-table-column prop="name" label="菜单名称" min-width="180" />
         <el-table-column label="菜单类型" min-width="110">
           <template #default="{ row }">
@@ -230,11 +236,13 @@ onMounted(loadMenus)
       <div class="table-footer">
         <el-pagination
           background
-          layout="prev, pager, next, jumper"
+          layout="sizes, prev, pager, next, jumper"
           :total="total"
           :page-size="pageSize"
+          :page-sizes="[10, 20, 50, 100]"
           :current-page="page"
           @current-change="changePage"
+          @size-change="changeSize"
         />
       </div>
     </el-card>