统一后台 Table 分页：常开 10/20/50/100 条数切换

- 新增 admin-pagination 工具，标准列表与云触手记录分别配置
- 用户/审计等页补齐 showSizeChanger，避免 total≤50 时无法切换
- ConfigProvider 默认开启条数切换

apps/frontend/src/pages/admin/AdminOrdersPage.tsx

@@ -10,6 +10,11 @@ import StatusTag from '@/components/admin/StatusTag'
 import { fetchAdminOrders } from '@/services/admin'
 import type { AdminOrderListItem } from '@/types/admin'
 import { adminPayStatusOptions } from '@/utils/admin-options'
+import {
+  ADMIN_DEFAULT_PAGE_SIZE,
+  buildAdminTablePagination,
+  resolveAdminPageSize,
+} from '@/utils/admin-pagination'
 import { formatAdminDateTime } from '@/utils/admin-time'
 
 type OrderFilterForm = {
@@ -22,7 +27,7 @@ export default function AdminOrdersPage() {
   const navigate = useNavigate()
   const [searchParams, setSearchParams] = useSearchParams()
   const page = Number(searchParams.get('page') || 1) || 1
-  const pageSize = Number(searchParams.get('pageSize') || 20) || 20
+  const pageSize = resolveAdminPageSize(searchParams.get('pageSize'), ADMIN_DEFAULT_PAGE_SIZE)
   const filters = {
     platformOrderId: searchParams.get('platformOrderId') || '',
     payStatus: searchParams.get('payStatus') || '',
@@ -141,16 +146,14 @@ export default function AdminOrdersPage() {
           columns={columns}
           dataSource={data?.items || []}
           scroll={{ x: 900 }}
-          pagination={{
+          pagination={buildAdminTablePagination({
             current: data?.pagination.page || page,
             pageSize: data?.pagination.pageSize || pageSize,
             total: data?.pagination.total || 0,
-            showSizeChanger: true,
-            showTotal: (total) => `共 ${total} 条`,
             onChange: (nextPage, nextPageSize) => {
               setSearchParams(cleanParams({ ...filters, page: nextPage, pageSize: nextPageSize }))
             },
-          }}
+          })}
         />
       </Card>
     </section>