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/AdminUsersPage.tsx

@@ -38,6 +38,11 @@ import {
 import type { AdminRole, AdminUserListItem } from '@/types/admin'
 import { getAdminUserId, hasAdminRole } from '@/utils/admin-auth'
 import { adminUserRoleOptions, adminUserStatusOptions } from '@/utils/admin-options'
+import {
+  ADMIN_DEFAULT_PAGE_SIZE,
+  buildAdminTablePagination,
+  resolveAdminPageSize,
+} from '@/utils/admin-pagination'
 import { formatAdminDateTime } from '@/utils/admin-time'
 
 type UserFilterForm = {
@@ -68,7 +73,7 @@ export default function AdminUsersPage() {
   const [creating, setCreating] = useState(false)
   const [actionLoadingId, setActionLoadingId] = useState<number | null>(null)
   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 = {
     username: searchParams.get('username') || '',
     role: searchParams.get('role') || '',
@@ -407,15 +412,14 @@ export default function AdminUsersPage() {
           dataSource={data?.items || []}
           locale={{ emptyText: <Empty description="暂无用户" /> }}
           scroll={{ x: 1060 }}
-          pagination={{
+          pagination={buildAdminTablePagination({
             current: data?.pagination.page || page,
             pageSize: data?.pagination.pageSize || pageSize,
             total: data?.pagination.total || 0,
-            showTotal: (total) => `共 ${total} 条`,
             onChange: (nextPage, nextPageSize) => {
               setSearchParams(cleanParams({ ...filters, page: nextPage, pageSize: nextPageSize }))
             },
-          }}
+          })}
         />
       </Card>
     </section>