修复后台表查询筛选与分页

使用单次哨兵查询统一计算扫描范围、匹配总数和截断状态
增加完整候选集服务端排序与越界页码钳制
增加固定分页栏、扫描上限提示和后端排序交互
补充大表响应边界文档与前后端回归测试

apps/admin-web/src/api/adminApiClient.ts

@@ -764,6 +764,11 @@ function buildDatabaseTableRowsQuery(query: AdminDatabaseTableRowsQuery) {
   if (typeof query.limit === 'number' && Number.isFinite(query.limit)) {
     params.set('limit', String(query.limit));
   }
+  if (typeof query.page === 'number' && Number.isFinite(query.page)) {
+    params.set('page', String(query.page));
+  }
+  appendQueryParam(params, 'sortColumn', query.sortColumn);
+  appendQueryParam(params, 'sortDirection', query.sortDirection);
   const queryString = params.toString();
   return queryString ? `?${queryString}` : '';
 }

apps/admin-web/src/api/adminApiTypes.ts

@@ -150,8 +150,11 @@ export interface AdminDatabaseTableListResponse {
 
 export interface AdminDatabaseTableRowsQuery {
   limit?: number;
+  page?: number;
   search?: string;
   filters?: string;
+  sortColumn?: string;
+  sortDirection?: 'asc' | 'desc';
 }
 
 export interface AdminDatabaseTableRowPayload {
@@ -165,6 +168,11 @@ export interface AdminDatabaseTableRowsResponse {
   rows: AdminDatabaseTableRowPayload[];
   totalReturned: number;
   limit: number;
+  page: number;
+  totalMatched: number;
+  scannedCount: number;
+  scanLimit: number;
+  scanLimitReached: boolean;
 }
 
 export interface AdminDatabaseTableStatPayload {