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/shop/ShopKeysPage.vue

@@ -12,7 +12,7 @@ const loading = ref(false)
 const rows = ref<ShopKeyItem[]>([])
 const total = ref(0)
 const page = ref(1)
-const pageSize = 15
+const pageSize = ref(10)
 
 const dialogVisible = ref(false)
 const editingId = ref<number | null>(null)
@@ -40,7 +40,7 @@ function whitelistTooltip(row: ShopKeyItem): string {
 async function load() {
   loading.value = true
   try {
-    const result = await fetchShopKeyList({ page: page.value, pageSize })
+    const result = await fetchShopKeyList({ page: page.value, pageSize: pageSize.value })
     rows.value = result.items
     total.value = result.total
     page.value = result.page
@@ -121,12 +121,13 @@ onMounted(load)
         <h2>店铺密钥管理</h2>
         <p>管理各店铺的紫鸟浏览器账号与令牌。</p>
       </div>
-      <el-button type="primary" @click="openCreate">新增密钥</el-button>
     </div>
 
     <el-card shadow="never">
+      <div class="table-toolbar">
+        <el-button type="primary" @click="openCreate">新增密钥</el-button>
+      </div>
       <el-table v-loading="loading" :data="rows" stripe border>
-        <el-table-column type="index" label="序号" min-width="80" :index="(i: number) => (page - 1) * pageSize + i + 1" />
         <el-table-column prop="remarkName" label="备注名" min-width="140">
           <template #default="{ row }">{{ (row as ShopKeyItem).remarkName || '—' }}</template>
         </el-table-column>
@@ -162,7 +163,7 @@ onMounted(load)
       </el-table>
       <div class="table-footer">
         <span>共 <b>{{ total.toLocaleString() }}</b> 条</span>
-        <el-pagination background layout="prev, pager, next, jumper" :total="total" :page-size="pageSize" :current-page="page" @current-change="(p: number) => { page = p; load() }" />
+        <el-pagination background layout="sizes, prev, pager, next, jumper" :total="total" :page-size="pageSize" :page-sizes="[10, 20, 50, 100]" :current-page="page" @current-change="(p: number) => { page = p; load() }" @size-change="() => { page = 1; load() }" />
       </div>
     </el-card>