feat: 列表接口分页排序与验证

src/Api/TakeoutSaaS.AdminApi/Controllers/MerchantsController.cs

@@ -49,7 +49,7 @@ public sealed class MerchantsController : BaseApiController
     [HttpGet]
     [PermissionAuthorize("merchant:read")]
     [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<MerchantDto>>), StatusCodes.Status200OK)]
-    public async Task<ApiResponse<IReadOnlyList<MerchantDto>>> List(
+    public async Task<ApiResponse<PagedResult<MerchantDto>>> List(
         [FromQuery] MerchantStatus? status,
         [FromQuery] int page = 1,
         [FromQuery] int pageSize = 20,
@@ -65,7 +65,7 @@ public sealed class MerchantsController : BaseApiController
             SortBy = sortBy,
             SortDescending = sortDesc
         }, cancellationToken);
-        return ApiResponse<IReadOnlyList<MerchantDto>>.Ok(result);
+        return ApiResponse<PagedResult<MerchantDto>>.Ok(result);
     }
 
     /// <summary>