chore: add documentation comments and stylecop rules

.editorconfig

@@ -0,0 +1,6 @@
+# EditorConfig
+root = true
+
+[*.cs]
+dotnet_diagnostic.SA1600.severity = error
+dotnet_diagnostic.SA1601.severity = error

Directory.Build.props

@@ -6,5 +6,8 @@
     <LangVersion>latest</LangVersion>
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
   </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.507" PrivateAssets="all" />
+  </ItemGroup>
 </Project>
 

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

@@ -13,21 +13,16 @@ using TakeoutSaaS.Shared.Web.Api;
 using TakeoutSaaS.Shared.Web.Security;
 
 namespace TakeoutSaaS.AdminApi.Controllers;
-
 /// <summary>
 /// 管理后台认证接口
 /// </summary>
-/// <remarks>
+/// <remarks>提供登录、刷新 Token 以及用户权限查询能力。</remarks>
-/// 
+/// <param name="authService">认证服务</param>
-/// </remarks>
-/// <param name="authService"></param>
 [ApiVersion("1.0")]
 [Authorize]
 [Route("api/admin/v{version:apiVersion}/auth")]
 public sealed class AuthController(IAdminAuthService authService) : BaseApiController
 {
-
-
     /// <summary>
     /// 登录获取 Token
     /// </summary>
@@ -84,12 +79,14 @@ public sealed class AuthController(IAdminAuthService authService) : BaseApiContr
     [ProducesResponseType(typeof(ApiResponse<CurrentUserProfile>), StatusCodes.Status401Unauthorized)]
     public async Task<ApiResponse<CurrentUserProfile>> GetProfile(CancellationToken cancellationToken)
     {
+        // 1. 从 JWT 中获取当前用户标识
         var userId = User.GetUserId();
         if (userId == 0)
         {
             return ApiResponse<CurrentUserProfile>.Error(ErrorCodes.Unauthorized, "Token 缺少有效的用户标识");
         }
 
+        // 2. 读取用户档案并返回
         var profile = await authService.GetProfileAsync(userId, cancellationToken);
         return ApiResponse<CurrentUserProfile>.Ok(profile);
     }

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

@@ -16,16 +16,11 @@ namespace TakeoutSaaS.AdminApi.Controllers;
 /// <summary>
 /// 配送单管理。
 /// </summary>
-/// <remarks>
-/// 初始化控制器。
-/// </remarks>
 [ApiVersion("1.0")]
 [Authorize]
 [Route("api/admin/v{version:apiVersion}/deliveries")]
 public sealed class DeliveriesController(IMediator mediator) : BaseApiController
 {
-
-
     /// <summary>
     /// 创建配送单。
     /// </summary>
@@ -34,7 +29,10 @@ public sealed class DeliveriesController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<DeliveryOrderDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<DeliveryOrderDto>> Create([FromBody] CreateDeliveryOrderCommand command, CancellationToken cancellationToken)
     {
+        // 1. 创建配送单
         var result = await mediator.Send(command, cancellationToken);
+
+        // 2. 返回创建结果
         return ApiResponse<DeliveryOrderDto>.Ok(result);
     }
 
@@ -53,6 +51,7 @@ public sealed class DeliveriesController(IMediator mediator) : BaseApiController
         [FromQuery] bool sortDesc = true,
         CancellationToken cancellationToken = default)
     {
+        // 1. 组装查询参数
         var result = await mediator.Send(new SearchDeliveryOrdersQuery
         {
             OrderId = orderId,
@@ -63,6 +62,7 @@ public sealed class DeliveriesController(IMediator mediator) : BaseApiController
             SortDescending = sortDesc
         }, cancellationToken);
 
+        // 2. 返回分页结果
         return ApiResponse<PagedResult<DeliveryOrderDto>>.Ok(result);
     }
 
@@ -75,7 +75,10 @@ public sealed class DeliveriesController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<DeliveryOrderDto>> Detail(long deliveryOrderId, CancellationToken cancellationToken)
     {
+        // 1. 查询配送单详情
         var result = await mediator.Send(new GetDeliveryOrderByIdQuery { DeliveryOrderId = deliveryOrderId }, cancellationToken);
+
+        // 2. 返回详情或 404
         return result == null
             ? ApiResponse<DeliveryOrderDto>.Error(ErrorCodes.NotFound, "配送单不存在")
             : ApiResponse<DeliveryOrderDto>.Ok(result);
@@ -90,11 +93,16 @@ public sealed class DeliveriesController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<DeliveryOrderDto>> Update(long deliveryOrderId, [FromBody] UpdateDeliveryOrderCommand command, CancellationToken cancellationToken)
     {
+        // 1. 确保命令携带配送单标识
         if (command.DeliveryOrderId == 0)
         {
             command = command with { DeliveryOrderId = deliveryOrderId };
         }
+
+        // 2. 执行更新
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回更新结果或 404
         return result == null
             ? ApiResponse<DeliveryOrderDto>.Error(ErrorCodes.NotFound, "配送单不存在")
             : ApiResponse<DeliveryOrderDto>.Ok(result);
@@ -109,7 +117,10 @@ public sealed class DeliveriesController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<object>> Delete(long deliveryOrderId, CancellationToken cancellationToken)
     {
+        // 1. 执行删除
         var success = await mediator.Send(new DeleteDeliveryOrderCommand { DeliveryOrderId = deliveryOrderId }, cancellationToken);
+
+        // 2. 返回结果或 404
         return success
             ? ApiResponse<object>.Ok(null)
             : ApiResponse<object>.Error(ErrorCodes.NotFound, "配送单不存在");

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

@@ -12,17 +12,12 @@ namespace TakeoutSaaS.AdminApi.Controllers;
 /// <summary>
 /// 参数字典管理。
 /// </summary>
-/// <remarks>
-/// 初始化字典控制器。
-/// </remarks>
 /// <param name="dictionaryAppService">字典服务</param>
 [ApiVersion("1.0")]
 [Authorize]
 [Route("api/admin/v{version:apiVersion}/dictionaries")]
 public sealed class DictionaryController(IDictionaryAppService dictionaryAppService) : BaseApiController
 {
-
-
     /// <summary>
     /// 查询字典分组。
     /// </summary>
@@ -31,7 +26,10 @@ public sealed class DictionaryController(IDictionaryAppService dictionaryAppServ
     [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<DictionaryGroupDto>>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<IReadOnlyList<DictionaryGroupDto>>> GetGroups([FromQuery] DictionaryGroupQuery query, CancellationToken cancellationToken)
     {
+        // 1. 查询字典分组
         var groups = await dictionaryAppService.SearchGroupsAsync(query, cancellationToken);
+
+        // 2. 返回分组列表
         return ApiResponse<IReadOnlyList<DictionaryGroupDto>>.Ok(groups);
     }
 
@@ -43,7 +41,10 @@ public sealed class DictionaryController(IDictionaryAppService dictionaryAppServ
     [ProducesResponseType(typeof(ApiResponse<DictionaryGroupDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<DictionaryGroupDto>> CreateGroup([FromBody] CreateDictionaryGroupRequest request, CancellationToken cancellationToken)
     {
+        // 1. 创建字典分组
         var group = await dictionaryAppService.CreateGroupAsync(request, cancellationToken);
+
+        // 2. 返回创建结果
         return ApiResponse<DictionaryGroupDto>.Ok(group);
     }
 
@@ -55,7 +56,10 @@ public sealed class DictionaryController(IDictionaryAppService dictionaryAppServ
     [ProducesResponseType(typeof(ApiResponse<DictionaryGroupDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<DictionaryGroupDto>> UpdateGroup(long groupId, [FromBody] UpdateDictionaryGroupRequest request, CancellationToken cancellationToken)
     {
+        // 1. 更新字典分组
         var group = await dictionaryAppService.UpdateGroupAsync(groupId, request, cancellationToken);
+
+        // 2. 返回更新结果
         return ApiResponse<DictionaryGroupDto>.Ok(group);
     }
 
@@ -67,7 +71,10 @@ public sealed class DictionaryController(IDictionaryAppService dictionaryAppServ
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<object>> DeleteGroup(long groupId, CancellationToken cancellationToken)
     {
+        // 1. 删除字典分组
         await dictionaryAppService.DeleteGroupAsync(groupId, cancellationToken);
+
+        // 2. 返回成功响应
         return ApiResponse.Success();
     }
 
@@ -79,7 +86,10 @@ public sealed class DictionaryController(IDictionaryAppService dictionaryAppServ
     [ProducesResponseType(typeof(ApiResponse<DictionaryItemDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<DictionaryItemDto>> CreateItem(long groupId, [FromBody] CreateDictionaryItemRequest request, CancellationToken cancellationToken)
     {
+        // 1. 绑定分组标识
         request.GroupId = groupId;
+
+        // 2. 创建字典项
         var item = await dictionaryAppService.CreateItemAsync(request, cancellationToken);
         return ApiResponse<DictionaryItemDto>.Ok(item);
     }
@@ -92,7 +102,10 @@ public sealed class DictionaryController(IDictionaryAppService dictionaryAppServ
     [ProducesResponseType(typeof(ApiResponse<DictionaryItemDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<DictionaryItemDto>> UpdateItem(long itemId, [FromBody] UpdateDictionaryItemRequest request, CancellationToken cancellationToken)
     {
+        // 1. 更新字典项
         var item = await dictionaryAppService.UpdateItemAsync(itemId, request, cancellationToken);
+
+        // 2. 返回更新结果
         return ApiResponse<DictionaryItemDto>.Ok(item);
     }
 
@@ -104,7 +117,10 @@ public sealed class DictionaryController(IDictionaryAppService dictionaryAppServ
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<object>> DeleteItem(long itemId, CancellationToken cancellationToken)
     {
+        // 1. 删除字典项
         await dictionaryAppService.DeleteItemAsync(itemId, cancellationToken);
+
+        // 2. 返回成功响应
         return ApiResponse.Success();
     }
 
@@ -115,7 +131,10 @@ public sealed class DictionaryController(IDictionaryAppService dictionaryAppServ
     [ProducesResponseType(typeof(ApiResponse<IReadOnlyDictionary<string, IReadOnlyList<DictionaryItemDto>>>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<IReadOnlyDictionary<string, IReadOnlyList<DictionaryItemDto>>>> BatchGet([FromBody] DictionaryBatchQueryRequest request, CancellationToken cancellationToken)
     {
+        // 1. 批量读取并命中缓存
         var dictionaries = await dictionaryAppService.GetCachedItemsAsync(request, cancellationToken);
+
+        // 2. 返回批量结果
         return ApiResponse<IReadOnlyDictionary<string, IReadOnlyList<DictionaryItemDto>>>.Ok(dictionaries);
     }
 }

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

@@ -19,8 +19,6 @@ namespace TakeoutSaaS.AdminApi.Controllers;
 [Route("api/admin/v{version:apiVersion}/files")]
 public sealed class FilesController(IFileStorageService fileStorageService) : BaseApiController
 {
-    private readonly IFileStorageService _fileStorageService = fileStorageService;
-
     /// <summary>
     /// 上传图片或文件。
     /// </summary>
@@ -30,23 +28,28 @@ public sealed class FilesController(IFileStorageService fileStorageService) : Ba
     [ProducesResponseType(typeof(ApiResponse<FileUploadResponse>), StatusCodes.Status400BadRequest)]
     public async Task<ApiResponse<FileUploadResponse>> Upload([FromForm] IFormFile? file, [FromForm] string? type, CancellationToken cancellationToken)
     {
+        // 1. 校验文件有效性
         if (file == null || file.Length == 0)
         {
             return ApiResponse<FileUploadResponse>.Error(ErrorCodes.BadRequest, "文件不能为空");
         }
 
+        // 2. 解析上传类型
         if (!UploadFileTypeParser.TryParse(type, out var uploadType))
         {
             return ApiResponse<FileUploadResponse>.Error(ErrorCodes.BadRequest, "上传类型不合法");
         }
 
+        // 3. 提取请求来源
         var origin = Request.Headers["Origin"].FirstOrDefault() ?? Request.Headers["Referer"].FirstOrDefault();
         await using var stream = file.OpenReadStream();
 
-        var result = await _fileStorageService.UploadAsync(
+        // 4. 调用存储服务执行上传
+        var result = await fileStorageService.UploadAsync(
             new UploadFileRequest(uploadType, stream, file.FileName, file.ContentType ?? string.Empty, file.Length, origin),
             cancellationToken);
 
+        // 5. 返回上传结果
         return ApiResponse<FileUploadResponse>.Ok(result);
     }
 }

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

@@ -23,7 +23,10 @@ public class HealthController : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status200OK)]
     public ApiResponse<object> Get()
     {
+        // 1. 构造健康状态
         var payload = new { status = "OK", service = "AdminApi", time = DateTime.UtcNow };
+
+        // 2. 返回健康响应
         return ApiResponse<object>.Ok(payload);
     }
 }

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

@@ -29,7 +29,10 @@ public sealed class MerchantCategoriesController(IMediator mediator) : BaseApiCo
     [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<MerchantCategoryDto>>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<IReadOnlyList<MerchantCategoryDto>>> List(CancellationToken cancellationToken)
     {
+        // 1. 查询所有类目
         var result = await mediator.Send(new ListMerchantCategoriesQuery(), cancellationToken);
+
+        // 2. 返回类目列表
         return ApiResponse<IReadOnlyList<MerchantCategoryDto>>.Ok(result);
     }
 
@@ -41,7 +44,10 @@ public sealed class MerchantCategoriesController(IMediator mediator) : BaseApiCo
     [ProducesResponseType(typeof(ApiResponse<MerchantCategoryDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<MerchantCategoryDto>> Create([FromBody] CreateMerchantCategoryCommand command, CancellationToken cancellationToken)
     {
+        // 1. 创建类目
         var result = await mediator.Send(command, cancellationToken);
+
+        // 2. 返回创建结果
         return ApiResponse<MerchantCategoryDto>.Ok(result);
     }
 
@@ -54,7 +60,10 @@ public sealed class MerchantCategoriesController(IMediator mediator) : BaseApiCo
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<object>> Delete(long categoryId, CancellationToken cancellationToken)
     {
+        // 1. 执行删除
         var success = await mediator.Send(new DeleteMerchantCategoryCommand(categoryId), cancellationToken);
+
+        // 2. 返回删除结果或 404
         return success
             ? ApiResponse<object>.Ok(null)
             : ApiResponse<object>.Error(ErrorCodes.NotFound, "类目不存在");
@@ -68,7 +77,10 @@ public sealed class MerchantCategoriesController(IMediator mediator) : BaseApiCo
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<object>> Reorder([FromBody] ReorderMerchantCategoriesCommand command, CancellationToken cancellationToken)
     {
+        // 1. 执行排序调整
         await mediator.Send(command, cancellationToken);
+
+        // 2. 返回成功结果
         return ApiResponse<object>.Ok(null);
     }
 }

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

@@ -16,16 +16,11 @@ namespace TakeoutSaaS.AdminApi.Controllers;
 /// <summary>
 /// 商户管理。
 /// </summary>
-/// <remarks>
-/// 初始化控制器。
-/// </remarks>
 [ApiVersion("1.0")]
 [Authorize]
 [Route("api/admin/v{version:apiVersion}/merchants")]
 public sealed class MerchantsController(IMediator mediator) : BaseApiController
 {
-
-
     /// <summary>
     /// 创建商户。
     /// </summary>
@@ -34,7 +29,10 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<MerchantDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<MerchantDto>> Create([FromBody] CreateMerchantCommand command, CancellationToken cancellationToken)
     {
+        // 1. 创建商户
         var result = await mediator.Send(command, cancellationToken);
+
+        // 2. 返回创建结果
         return ApiResponse<MerchantDto>.Ok(result);
     }
 
@@ -52,6 +50,7 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
         [FromQuery] bool sortDesc = true,
         CancellationToken cancellationToken = default)
     {
+        // 1. 组装查询参数并执行查询
         var result = await mediator.Send(new SearchMerchantsQuery
         {
             Status = status,
@@ -60,6 +59,8 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
             SortBy = sortBy,
             SortDescending = sortDesc
         }, cancellationToken);
+
+        // 2. 返回分页结果
         return ApiResponse<PagedResult<MerchantDto>>.Ok(result);
     }
 
@@ -72,12 +73,16 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<MerchantDto>> Update(long merchantId, [FromBody] UpdateMerchantCommand command, CancellationToken cancellationToken)
     {
+        // 1. 绑定商户标识
         if (command.MerchantId == 0)
         {
             command = command with { MerchantId = merchantId };
         }
 
+        // 2. 执行更新
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回更新结果或 404
         return result == null
             ? ApiResponse<MerchantDto>.Error(ErrorCodes.NotFound, "商户不存在")
             : ApiResponse<MerchantDto>.Ok(result);
@@ -92,7 +97,10 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<object>> Delete(long merchantId, CancellationToken cancellationToken)
     {
+        // 1. 执行删除
         var success = await mediator.Send(new DeleteMerchantCommand { MerchantId = merchantId }, cancellationToken);
+
+        // 2. 返回删除结果或 404
         return success
             ? ApiResponse<object>.Ok(null)
             : ApiResponse<object>.Error(ErrorCodes.NotFound, "商户不存在");
@@ -107,7 +115,10 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<MerchantDto>> Detail(long merchantId, CancellationToken cancellationToken)
     {
+        // 1. 查询商户概览
         var result = await mediator.Send(new GetMerchantByIdQuery { MerchantId = merchantId }, cancellationToken);
+
+        // 2. 返回结果或 404
         return result == null
             ? ApiResponse<MerchantDto>.Error(ErrorCodes.NotFound, "商户不存在")
             : ApiResponse<MerchantDto>.Ok(result);
@@ -121,7 +132,10 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<MerchantDetailDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<MerchantDetailDto>> FullDetail(long merchantId, CancellationToken cancellationToken)
     {
+        // 1. 查询商户详细资料
         var result = await mediator.Send(new GetMerchantDetailQuery(merchantId), cancellationToken);
+
+        // 2. 返回详情
         return ApiResponse<MerchantDetailDto>.Ok(result);
     }
 
@@ -136,7 +150,10 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
         [FromBody] AddMerchantDocumentCommand body,
         CancellationToken cancellationToken)
     {
+        // 1. 绑定商户标识
         var command = body with { MerchantId = merchantId };
+
+        // 2. 创建证照记录
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<MerchantDocumentDto>.Ok(result);
     }
@@ -149,7 +166,10 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<MerchantDocumentDto>>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<IReadOnlyList<MerchantDocumentDto>>> Documents(long merchantId, CancellationToken cancellationToken)
     {
+        // 1. 查询证照列表
         var result = await mediator.Send(new GetMerchantDocumentsQuery(merchantId), cancellationToken);
+
+        // 2. 返回证照集合
         return ApiResponse<IReadOnlyList<MerchantDocumentDto>>.Ok(result);
     }
 
@@ -165,7 +185,10 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
         [FromBody] ReviewMerchantDocumentCommand body,
         CancellationToken cancellationToken)
     {
+        // 1. 绑定商户与证照标识
         var command = body with { MerchantId = merchantId, DocumentId = documentId };
+
+        // 2. 执行审核
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<MerchantDocumentDto>.Ok(result);
     }
@@ -181,7 +204,10 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
         [FromBody] CreateMerchantContractCommand body,
         CancellationToken cancellationToken)
     {
+        // 1. 绑定商户标识
         var command = body with { MerchantId = merchantId };
+
+        // 2. 创建合同
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<MerchantContractDto>.Ok(result);
     }
@@ -194,7 +220,10 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<MerchantContractDto>>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<IReadOnlyList<MerchantContractDto>>> Contracts(long merchantId, CancellationToken cancellationToken)
     {
+        // 1. 查询合同列表
         var result = await mediator.Send(new GetMerchantContractsQuery(merchantId), cancellationToken);
+
+        // 2. 返回合同集合
         return ApiResponse<IReadOnlyList<MerchantContractDto>>.Ok(result);
     }
 
@@ -210,7 +239,10 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
         [FromBody] UpdateMerchantContractStatusCommand body,
         CancellationToken cancellationToken)
     {
+        // 1. 绑定商户与合同标识
         var command = body with { MerchantId = merchantId, ContractId = contractId };
+
+        // 2. 更新合同状态
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<MerchantContractDto>.Ok(result);
     }
@@ -223,7 +255,10 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<MerchantDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<MerchantDto>> Review(long merchantId, [FromBody] ReviewMerchantCommand body, CancellationToken cancellationToken)
     {
+        // 1. 绑定商户标识
         var command = body with { MerchantId = merchantId };
+
+        // 2. 执行审核
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<MerchantDto>.Ok(result);
     }
@@ -240,7 +275,10 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
         [FromQuery] int pageSize = 20,
         CancellationToken cancellationToken = default)
     {
+        // 1. 查询审核日志
         var result = await mediator.Send(new GetMerchantAuditLogsQuery(merchantId, page, pageSize), cancellationToken);
+
+        // 2. 返回日志分页
         return ApiResponse<PagedResult<MerchantAuditLogDto>>.Ok(result);
     }
 
@@ -252,7 +290,10 @@ public sealed class MerchantsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<string>>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<IReadOnlyList<string>>> Categories(CancellationToken cancellationToken)
     {
+        // 1. 查询可选类目
         var result = await mediator.Send(new GetMerchantCategoriesQuery(), cancellationToken);
+
+        // 2. 返回类目列表
         return ApiResponse<IReadOnlyList<string>>.Ok(result);
     }
 }

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

@@ -17,16 +17,11 @@ namespace TakeoutSaaS.AdminApi.Controllers;
 /// <summary>
 /// 订单管理。
 /// </summary>
-/// <remarks>
-/// 初始化控制器。
-/// </remarks>
 [ApiVersion("1.0")]
 [Authorize]
 [Route("api/admin/v{version:apiVersion}/orders")]
 public sealed class OrdersController(IMediator mediator) : BaseApiController
 {
-
-
     /// <summary>
     /// 创建订单。
     /// </summary>
@@ -35,7 +30,10 @@ public sealed class OrdersController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<OrderDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<OrderDto>> Create([FromBody] CreateOrderCommand command, CancellationToken cancellationToken)
     {
+        // 1. 创建订单
         var result = await mediator.Send(command, cancellationToken);
+
+        // 2. 返回创建结果
         return ApiResponse<OrderDto>.Ok(result);
     }
 
@@ -56,6 +54,7 @@ public sealed class OrdersController(IMediator mediator) : BaseApiController
         [FromQuery] bool sortDesc = true,
         CancellationToken cancellationToken = default)
     {
+        // 1. 组装查询参数并执行查询
         var result = await mediator.Send(new SearchOrdersQuery
         {
             StoreId = storeId,
@@ -68,6 +67,7 @@ public sealed class OrdersController(IMediator mediator) : BaseApiController
             SortDescending = sortDesc
         }, cancellationToken);
 
+        // 2. 返回分页结果
         return ApiResponse<PagedResult<OrderDto>>.Ok(result);
     }
 
@@ -80,7 +80,10 @@ public sealed class OrdersController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<OrderDto>> Detail(long orderId, CancellationToken cancellationToken)
     {
+        // 1. 查询订单详情
         var result = await mediator.Send(new GetOrderByIdQuery { OrderId = orderId }, cancellationToken);
+
+        // 2. 返回详情或 404
         return result == null
             ? ApiResponse<OrderDto>.Error(ErrorCodes.NotFound, "订单不存在")
             : ApiResponse<OrderDto>.Ok(result);
@@ -95,11 +98,16 @@ public sealed class OrdersController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<OrderDto>> Update(long orderId, [FromBody] UpdateOrderCommand command, CancellationToken cancellationToken)
     {
+        // 1. 确保命令包含订单标识
         if (command.OrderId == 0)
         {
             command = command with { OrderId = orderId };
         }
+
+        // 2. 执行更新
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回更新结果或 404
         return result == null
             ? ApiResponse<OrderDto>.Error(ErrorCodes.NotFound, "订单不存在")
             : ApiResponse<OrderDto>.Ok(result);
@@ -114,7 +122,10 @@ public sealed class OrdersController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<object>> Delete(long orderId, CancellationToken cancellationToken)
     {
+        // 1. 执行删除
         var success = await mediator.Send(new DeleteOrderCommand { OrderId = orderId }, cancellationToken);
+
+        // 2. 返回结果或 404
         return success
             ? ApiResponse<object>.Ok(null)
             : ApiResponse<object>.Error(ErrorCodes.NotFound, "订单不存在");

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

@@ -16,16 +16,11 @@ namespace TakeoutSaaS.AdminApi.Controllers;
 /// <summary>
 /// 支付记录管理。
 /// </summary>
-/// <remarks>
-/// 初始化控制器。
-/// </remarks>
 [ApiVersion("1.0")]
 [Authorize]
 [Route("api/admin/v{version:apiVersion}/payments")]
 public sealed class PaymentsController(IMediator mediator) : BaseApiController
 {
-
-
     /// <summary>
     /// 创建支付记录。
     /// </summary>
@@ -34,7 +29,10 @@ public sealed class PaymentsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<PaymentDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<PaymentDto>> Create([FromBody] CreatePaymentCommand command, CancellationToken cancellationToken)
     {
+        // 1. 创建支付记录
         var result = await mediator.Send(command, cancellationToken);
+
+        // 2. 返回创建结果
         return ApiResponse<PaymentDto>.Ok(result);
     }
 
@@ -53,6 +51,7 @@ public sealed class PaymentsController(IMediator mediator) : BaseApiController
         [FromQuery] bool sortDesc = true,
         CancellationToken cancellationToken = default)
     {
+        // 1. 组装查询参数并执行查询
         var result = await mediator.Send(new SearchPaymentsQuery
         {
             OrderId = orderId,
@@ -63,6 +62,7 @@ public sealed class PaymentsController(IMediator mediator) : BaseApiController
             SortDescending = sortDesc
         }, cancellationToken);
 
+        // 2. 返回分页结果
         return ApiResponse<PagedResult<PaymentDto>>.Ok(result);
     }
 
@@ -75,7 +75,10 @@ public sealed class PaymentsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<PaymentDto>> Detail(long paymentId, CancellationToken cancellationToken)
     {
+        // 1. 查询支付记录详情
         var result = await mediator.Send(new GetPaymentByIdQuery { PaymentId = paymentId }, cancellationToken);
+
+        // 2. 返回详情或 404
         return result == null
             ? ApiResponse<PaymentDto>.Error(ErrorCodes.NotFound, "支付记录不存在")
             : ApiResponse<PaymentDto>.Ok(result);
@@ -90,11 +93,16 @@ public sealed class PaymentsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<PaymentDto>> Update(long paymentId, [FromBody] UpdatePaymentCommand command, CancellationToken cancellationToken)
     {
+        // 1. 确保命令包含支付记录标识
         if (command.PaymentId == 0)
         {
             command = command with { PaymentId = paymentId };
         }
+
+        // 2. 执行更新
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回更新结果或 404
         return result == null
             ? ApiResponse<PaymentDto>.Error(ErrorCodes.NotFound, "支付记录不存在")
             : ApiResponse<PaymentDto>.Ok(result);
@@ -109,7 +117,10 @@ public sealed class PaymentsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<object>> Delete(long paymentId, CancellationToken cancellationToken)
     {
+        // 1. 执行删除
         var success = await mediator.Send(new DeletePaymentCommand { PaymentId = paymentId }, cancellationToken);
+
+        // 2. 返回结果或 404
         return success
             ? ApiResponse<object>.Ok(null)
             : ApiResponse<object>.Error(ErrorCodes.NotFound, "支付记录不存在");

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

@@ -31,7 +31,10 @@ public sealed class PermissionsController(IMediator mediator) : BaseApiControlle
     [ProducesResponseType(typeof(ApiResponse<PagedResult<PermissionDto>>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<PagedResult<PermissionDto>>> Search([FromQuery] SearchPermissionsQuery query, CancellationToken cancellationToken)
     {
+        // 1. 查询权限分页
         var result = await mediator.Send(query, cancellationToken);
+
+        // 2. 返回分页数据
         return ApiResponse<PagedResult<PermissionDto>>.Ok(result);
     }
 
@@ -43,7 +46,10 @@ public sealed class PermissionsController(IMediator mediator) : BaseApiControlle
     [ProducesResponseType(typeof(ApiResponse<PermissionDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<PermissionDto>> Create([FromBody, Required] CreatePermissionCommand command, CancellationToken cancellationToken)
     {
+        // 1. 创建权限
         var result = await mediator.Send(command, cancellationToken);
+
+        // 2. 返回创建结果
         return ApiResponse<PermissionDto>.Ok(result);
     }
 
@@ -56,8 +62,13 @@ public sealed class PermissionsController(IMediator mediator) : BaseApiControlle
     [ProducesResponseType(typeof(ApiResponse<PermissionDto>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<PermissionDto>> Update(long permissionId, [FromBody, Required] UpdatePermissionCommand command, CancellationToken cancellationToken)
     {
+        // 1. 绑定权限标识
         command = command with { PermissionId = permissionId };
+
+        // 2. 执行更新
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回更新结果或 404
         return result is null
             ? ApiResponse<PermissionDto>.Error(StatusCodes.Status404NotFound, "权限不存在")
             : ApiResponse<PermissionDto>.Ok(result);
@@ -71,7 +82,10 @@ public sealed class PermissionsController(IMediator mediator) : BaseApiControlle
     [ProducesResponseType(typeof(ApiResponse<bool>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<bool>> Delete(long permissionId, CancellationToken cancellationToken)
     {
+        // 1. 构建删除命令
         var command = new DeletePermissionCommand { PermissionId = permissionId };
+
+        // 2. 执行删除
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<bool>.Ok(result);
     }

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

@@ -16,16 +16,11 @@ namespace TakeoutSaaS.AdminApi.Controllers;
 /// <summary>
 /// 商品管理。
 /// </summary>
-/// <remarks>
-/// 初始化控制器。
-/// </remarks>
 [ApiVersion("1.0")]
 [Authorize]
 [Route("api/admin/v{version:apiVersion}/products")]
 public sealed class ProductsController(IMediator mediator) : BaseApiController
 {
-
-
     /// <summary>
     /// 创建商品。
     /// </summary>
@@ -34,7 +29,10 @@ public sealed class ProductsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<ProductDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<ProductDto>> Create([FromBody] CreateProductCommand command, CancellationToken cancellationToken)
     {
+        // 1. 创建商品
         var result = await mediator.Send(command, cancellationToken);
+
+        // 2. 返回创建结果
         return ApiResponse<ProductDto>.Ok(result);
     }
 
@@ -54,6 +52,7 @@ public sealed class ProductsController(IMediator mediator) : BaseApiController
         [FromQuery] bool sortDesc = true,
         CancellationToken cancellationToken = default)
     {
+        // 1. 组装查询参数并执行查询
         var result = await mediator.Send(new SearchProductsQuery
         {
             StoreId = storeId,
@@ -65,6 +64,7 @@ public sealed class ProductsController(IMediator mediator) : BaseApiController
             SortDescending = sortDesc
         }, cancellationToken);
 
+        // 2. 返回分页结果
         return ApiResponse<PagedResult<ProductDto>>.Ok(result);
     }
 
@@ -77,7 +77,10 @@ public sealed class ProductsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<ProductDto>> Detail(long productId, CancellationToken cancellationToken)
     {
+        // 1. 查询商品详情
         var result = await mediator.Send(new GetProductByIdQuery { ProductId = productId }, cancellationToken);
+
+        // 2. 返回详情或 404
         return result == null
             ? ApiResponse<ProductDto>.Error(ErrorCodes.NotFound, "商品不存在")
             : ApiResponse<ProductDto>.Ok(result);
@@ -92,11 +95,16 @@ public sealed class ProductsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<ProductDto>> Update(long productId, [FromBody] UpdateProductCommand command, CancellationToken cancellationToken)
     {
+        // 1. 确保命令包含商品标识
         if (command.ProductId == 0)
         {
             command = command with { ProductId = productId };
         }
+
+        // 2. 执行更新
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回更新结果或 404
         return result == null
             ? ApiResponse<ProductDto>.Error(ErrorCodes.NotFound, "商品不存在")
             : ApiResponse<ProductDto>.Ok(result);
@@ -111,7 +119,10 @@ public sealed class ProductsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<object>> Delete(long productId, CancellationToken cancellationToken)
     {
+        // 1. 执行删除
         var success = await mediator.Send(new DeleteProductCommand { ProductId = productId }, cancellationToken);
+
+        // 2. 返回结果或 404
         return success
             ? ApiResponse<object>.Ok(null)
             : ApiResponse<object>.Error(ErrorCodes.NotFound, "商品不存在");

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

@@ -32,7 +32,10 @@ public sealed class RolesController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<RoleTemplateDto>>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<IReadOnlyList<RoleTemplateDto>>> ListTemplates([FromQuery] bool? isActive, CancellationToken cancellationToken)
     {
+        // 1. 查询模板列表
         var result = await mediator.Send(new ListRoleTemplatesQuery { IsActive = isActive }, cancellationToken);
+
+        // 2. 返回模板集合
         return ApiResponse<IReadOnlyList<RoleTemplateDto>>.Ok(result);
     }
 
@@ -48,7 +51,10 @@ public sealed class RolesController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<RoleTemplateDto>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<RoleTemplateDto>> GetTemplate(string templateCode, CancellationToken cancellationToken)
     {
+        // 1. 查询指定模板
         var result = await mediator.Send(new GetRoleTemplateQuery { TemplateCode = templateCode }, cancellationToken);
+
+        // 2. 返回模板或 404
         return result is null
             ? ApiResponse<RoleTemplateDto>.Error(StatusCodes.Status404NotFound, "角色模板不存在")
             : ApiResponse<RoleTemplateDto>.Ok(result);
@@ -62,7 +68,10 @@ public sealed class RolesController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<RoleTemplateDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<RoleTemplateDto>> CreateTemplate([FromBody, Required] CreateRoleTemplateCommand command, CancellationToken cancellationToken)
     {
+        // 1. 创建模板
         var result = await mediator.Send(command, cancellationToken);
+
+        // 2. 返回创建结果
         return ApiResponse<RoleTemplateDto>.Ok(result);
     }
 
@@ -78,8 +87,13 @@ public sealed class RolesController(IMediator mediator) : BaseApiController
         [FromBody, Required] UpdateRoleTemplateCommand command,
         CancellationToken cancellationToken)
     {
+        // 1. 绑定模板编码
         command = command with { TemplateCode = templateCode };
+
+        // 2. 执行更新
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回更新结果或 404
         return result is null
             ? ApiResponse<RoleTemplateDto>.Error(StatusCodes.Status404NotFound, "角色模板不存在")
             : ApiResponse<RoleTemplateDto>.Ok(result);
@@ -93,7 +107,10 @@ public sealed class RolesController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<bool>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<bool>> DeleteTemplate(string templateCode, CancellationToken cancellationToken)
     {
+        // 1. 删除模板
         var result = await mediator.Send(new DeleteRoleTemplateCommand { TemplateCode = templateCode }, cancellationToken);
+
+        // 2. 返回执行结果
         return ApiResponse<bool>.Ok(result);
     }
 
@@ -112,7 +129,10 @@ public sealed class RolesController(IMediator mediator) : BaseApiController
         [FromBody, Required] CopyRoleTemplateCommand command,
         CancellationToken cancellationToken)
     {
+        // 1. 绑定模板编码
         command = command with { TemplateCode = templateCode };
+
+        // 2. 复制模板并返回角色
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<RoleDto>.Ok(result);
     }
@@ -131,7 +151,10 @@ public sealed class RolesController(IMediator mediator) : BaseApiController
         [FromBody] InitializeRoleTemplatesCommand? command,
         CancellationToken cancellationToken)
     {
+        // 1. 确保命令实例存在
         command ??= new InitializeRoleTemplatesCommand();
+
+        // 2. 执行初始化
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<IReadOnlyList<RoleDto>>.Ok(result);
     }
@@ -149,7 +172,10 @@ public sealed class RolesController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<PagedResult<RoleDto>>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<PagedResult<RoleDto>>> Search([FromQuery] SearchRolesQuery query, CancellationToken cancellationToken)
     {
+        // 1. 查询角色分页
         var result = await mediator.Send(query, cancellationToken);
+
+        // 2. 返回分页数据
         return ApiResponse<PagedResult<RoleDto>>.Ok(result);
     }
 
@@ -161,7 +187,10 @@ public sealed class RolesController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<RoleDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<RoleDto>> Create([FromBody, Required] CreateRoleCommand command, CancellationToken cancellationToken)
     {
+        // 1. 创建角色
         var result = await mediator.Send(command, cancellationToken);
+
+        // 2. 返回创建结果
         return ApiResponse<RoleDto>.Ok(result);
     }
 
@@ -174,8 +203,13 @@ public sealed class RolesController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<RoleDto>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<RoleDto>> Update(long roleId, [FromBody, Required] UpdateRoleCommand command, CancellationToken cancellationToken)
     {
+        // 1. 绑定角色标识
         command = command with { RoleId = roleId };
+
+        // 2. 执行更新
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回更新结果或 404
         return result is null
             ? ApiResponse<RoleDto>.Error(StatusCodes.Status404NotFound, "角色不存在")
             : ApiResponse<RoleDto>.Ok(result);
@@ -189,7 +223,10 @@ public sealed class RolesController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<bool>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<bool>> Delete(long roleId, CancellationToken cancellationToken)
     {
+        // 1. 构建删除命令
         var command = new DeleteRoleCommand { RoleId = roleId };
+
+        // 2. 执行删除
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<bool>.Ok(result);
     }
@@ -202,7 +239,10 @@ public sealed class RolesController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<bool>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<bool>> BindPermissions(long roleId, [FromBody, Required] BindRolePermissionsCommand command, CancellationToken cancellationToken)
     {
+        // 1. 绑定角色标识
         command = command with { RoleId = roleId };
+
+        // 2. 执行覆盖式授权
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<bool>.Ok(result);
     }

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

@@ -16,16 +16,11 @@ namespace TakeoutSaaS.AdminApi.Controllers;
 /// <summary>
 /// 门店管理。
 /// </summary>
-/// <remarks>
-/// 初始化控制器。
-/// </remarks>
 [ApiVersion("1.0")]
 [Authorize]
 [Route("api/admin/v{version:apiVersion}/stores")]
 public sealed class StoresController(IMediator mediator) : BaseApiController
 {
-
-
     /// <summary>
     /// 创建门店。
     /// </summary>
@@ -34,7 +29,10 @@ public sealed class StoresController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<StoreDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<StoreDto>> Create([FromBody] CreateStoreCommand command, CancellationToken cancellationToken)
     {
+        // 1. 创建门店
         var result = await mediator.Send(command, cancellationToken);
+
+        // 2. 返回创建结果
         return ApiResponse<StoreDto>.Ok(result);
     }
 
@@ -53,6 +51,7 @@ public sealed class StoresController(IMediator mediator) : BaseApiController
         [FromQuery] bool sortDesc = true,
         CancellationToken cancellationToken = default)
     {
+        // 1. 组装查询参数并执行查询
         var result = await mediator.Send(new SearchStoresQuery
         {
             MerchantId = merchantId,
@@ -63,6 +62,7 @@ public sealed class StoresController(IMediator mediator) : BaseApiController
             SortDescending = sortDesc
         }, cancellationToken);
 
+        // 2. 返回分页结果
         return ApiResponse<PagedResult<StoreDto>>.Ok(result);
     }
 
@@ -75,7 +75,10 @@ public sealed class StoresController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<StoreDto>> Detail(long storeId, CancellationToken cancellationToken)
     {
+        // 1. 查询门店详情
         var result = await mediator.Send(new GetStoreByIdQuery { StoreId = storeId }, cancellationToken);
+
+        // 2. 返回详情或 404
         return result == null
             ? ApiResponse<StoreDto>.Error(ErrorCodes.NotFound, "门店不存在")
             : ApiResponse<StoreDto>.Ok(result);
@@ -90,11 +93,16 @@ public sealed class StoresController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<StoreDto>> Update(long storeId, [FromBody] UpdateStoreCommand command, CancellationToken cancellationToken)
     {
+        // 1. 确保命令包含门店标识
         if (command.StoreId == 0)
         {
             command = command with { StoreId = storeId };
         }
+
+        // 2. 执行更新
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回更新结果或 404
         return result == null
             ? ApiResponse<StoreDto>.Error(ErrorCodes.NotFound, "门店不存在")
             : ApiResponse<StoreDto>.Ok(result);
@@ -109,7 +117,10 @@ public sealed class StoresController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<object>> Delete(long storeId, CancellationToken cancellationToken)
     {
+        // 1. 执行删除
         var success = await mediator.Send(new DeleteStoreCommand { StoreId = storeId }, cancellationToken);
+
+        // 2. 返回结果或 404
         return success
             ? ApiResponse<object>.Ok(null)
             : ApiResponse<object>.Error(ErrorCodes.NotFound, "门店不存在");

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

@@ -31,7 +31,10 @@ public sealed class SystemParametersController(IMediator mediator) : BaseApiCont
     [ProducesResponseType(typeof(ApiResponse<SystemParameterDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<SystemParameterDto>> Create([FromBody] CreateSystemParameterCommand command, CancellationToken cancellationToken)
     {
+        // 1. 创建系统参数
         var result = await mediator.Send(command, cancellationToken);
+
+        // 2. 返回创建结果
         return ApiResponse<SystemParameterDto>.Ok(result);
     }
 
@@ -50,6 +53,7 @@ public sealed class SystemParametersController(IMediator mediator) : BaseApiCont
         [FromQuery] bool sortDesc = true,
         CancellationToken cancellationToken = default)
     {
+        // 1. 组合查询参数
         var result = await mediator.Send(new SearchSystemParametersQuery
         {
             Keyword = keyword,
@@ -60,6 +64,7 @@ public sealed class SystemParametersController(IMediator mediator) : BaseApiCont
             SortDescending = sortDesc
         }, cancellationToken);
 
+        // 2. 返回分页结果
         return ApiResponse<PagedResult<SystemParameterDto>>.Ok(result);
     }
 
@@ -72,7 +77,10 @@ public sealed class SystemParametersController(IMediator mediator) : BaseApiCont
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<SystemParameterDto>> Detail(long parameterId, CancellationToken cancellationToken)
     {
+        // 1. 查询参数详情
         var result = await mediator.Send(new GetSystemParameterByIdQuery(parameterId), cancellationToken);
+
+        // 2. 返回详情或 404
         return result == null
             ? ApiResponse<SystemParameterDto>.Error(ErrorCodes.NotFound, "系统参数不存在")
             : ApiResponse<SystemParameterDto>.Ok(result);
@@ -87,12 +95,16 @@ public sealed class SystemParametersController(IMediator mediator) : BaseApiCont
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<SystemParameterDto>> Update(long parameterId, [FromBody] UpdateSystemParameterCommand command, CancellationToken cancellationToken)
     {
+        // 1. 确保命令包含参数标识
         if (command.ParameterId == 0)
         {
             command = command with { ParameterId = parameterId };
         }
 
+        // 2. 执行更新
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回结果或 404
         return result == null
             ? ApiResponse<SystemParameterDto>.Error(ErrorCodes.NotFound, "系统参数不存在")
             : ApiResponse<SystemParameterDto>.Ok(result);
@@ -107,7 +119,10 @@ public sealed class SystemParametersController(IMediator mediator) : BaseApiCont
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<object>> Delete(long parameterId, CancellationToken cancellationToken)
     {
+        // 1. 执行删除
         var success = await mediator.Send(new DeleteSystemParameterCommand { ParameterId = parameterId }, cancellationToken);
+
+        // 2. 返回成功或 404
         return success
             ? ApiResponse.Success()
             : ApiResponse<object>.Error(ErrorCodes.NotFound, "系统参数不存在");

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

@@ -28,8 +28,13 @@ public sealed class TenantAnnouncementsController(IMediator mediator) : BaseApiC
     [ProducesResponseType(typeof(ApiResponse<PagedResult<TenantAnnouncementDto>>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<PagedResult<TenantAnnouncementDto>>> Search(long tenantId, [FromQuery] SearchTenantAnnouncementsQuery query, CancellationToken cancellationToken)
     {
+        // 1. 绑定租户标识
         query = query with { TenantId = tenantId };
+
+        // 2. 查询公告列表
         var result = await mediator.Send(query, cancellationToken);
+
+        // 3. 返回分页结果
         return ApiResponse<PagedResult<TenantAnnouncementDto>>.Ok(result);
     }
 
@@ -42,7 +47,10 @@ public sealed class TenantAnnouncementsController(IMediator mediator) : BaseApiC
     [ProducesResponseType(typeof(ApiResponse<TenantAnnouncementDto>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<TenantAnnouncementDto>> Detail(long tenantId, long announcementId, CancellationToken cancellationToken)
     {
+        // 1. 查询指定公告
         var result = await mediator.Send(new GetTenantAnnouncementQuery { TenantId = tenantId, AnnouncementId = announcementId }, cancellationToken);
+
+        // 2. 返回详情或 404
         return result is null
             ? ApiResponse<TenantAnnouncementDto>.Error(StatusCodes.Status404NotFound, "公告不存在")
             : ApiResponse<TenantAnnouncementDto>.Ok(result);
@@ -56,7 +64,10 @@ public sealed class TenantAnnouncementsController(IMediator mediator) : BaseApiC
     [ProducesResponseType(typeof(ApiResponse<TenantAnnouncementDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<TenantAnnouncementDto>> Create(long tenantId, [FromBody, Required] CreateTenantAnnouncementCommand command, CancellationToken cancellationToken)
     {
+        // 1. 绑定租户标识
         command = command with { TenantId = tenantId };
+
+        // 2. 创建公告并返回
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<TenantAnnouncementDto>.Ok(result);
     }
@@ -70,8 +81,13 @@ public sealed class TenantAnnouncementsController(IMediator mediator) : BaseApiC
     [ProducesResponseType(typeof(ApiResponse<TenantAnnouncementDto>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<TenantAnnouncementDto>> Update(long tenantId, long announcementId, [FromBody, Required] UpdateTenantAnnouncementCommand command, CancellationToken cancellationToken)
     {
+        // 1. 绑定租户与公告标识
         command = command with { TenantId = tenantId, AnnouncementId = announcementId };
+
+        // 2. 执行更新
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回更新结果或 404
         return result is null
             ? ApiResponse<TenantAnnouncementDto>.Error(StatusCodes.Status404NotFound, "公告不存在")
             : ApiResponse<TenantAnnouncementDto>.Ok(result);
@@ -85,7 +101,10 @@ public sealed class TenantAnnouncementsController(IMediator mediator) : BaseApiC
     [ProducesResponseType(typeof(ApiResponse<bool>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<bool>> Delete(long tenantId, long announcementId, CancellationToken cancellationToken)
     {
+        // 1. 删除公告
         var result = await mediator.Send(new DeleteTenantAnnouncementCommand { TenantId = tenantId, AnnouncementId = announcementId }, cancellationToken);
+
+        // 2. 返回执行结果
         return ApiResponse<bool>.Ok(result);
     }
 
@@ -98,7 +117,10 @@ public sealed class TenantAnnouncementsController(IMediator mediator) : BaseApiC
     [ProducesResponseType(typeof(ApiResponse<TenantAnnouncementDto>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<TenantAnnouncementDto>> MarkRead(long tenantId, long announcementId, CancellationToken cancellationToken)
     {
+        // 1. 标记公告已读
         var result = await mediator.Send(new MarkTenantAnnouncementReadCommand { TenantId = tenantId, AnnouncementId = announcementId }, cancellationToken);
+
+        // 2. 返回结果或 404
         return result is null
             ? ApiResponse<TenantAnnouncementDto>.Error(StatusCodes.Status404NotFound, "公告不存在")
             : ApiResponse<TenantAnnouncementDto>.Ok(result);

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

@@ -28,8 +28,13 @@ public sealed class TenantBillingsController(IMediator mediator) : BaseApiContro
     [ProducesResponseType(typeof(ApiResponse<PagedResult<TenantBillingDto>>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<PagedResult<TenantBillingDto>>> Search(long tenantId, [FromQuery] SearchTenantBillsQuery query, CancellationToken cancellationToken)
     {
+        // 1. 绑定租户标识
         query = query with { TenantId = tenantId };
+
+        // 2. 查询账单列表
         var result = await mediator.Send(query, cancellationToken);
+
+        // 3. 返回分页结果
         return ApiResponse<PagedResult<TenantBillingDto>>.Ok(result);
     }
 
@@ -42,7 +47,10 @@ public sealed class TenantBillingsController(IMediator mediator) : BaseApiContro
     [ProducesResponseType(typeof(ApiResponse<TenantBillingDto>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<TenantBillingDto>> Detail(long tenantId, long billingId, CancellationToken cancellationToken)
     {
+        // 1. 查询账单详情
         var result = await mediator.Send(new GetTenantBillQuery { TenantId = tenantId, BillingId = billingId }, cancellationToken);
+
+        // 2. 返回详情或 404
         return result is null
             ? ApiResponse<TenantBillingDto>.Error(StatusCodes.Status404NotFound, "账单不存在")
             : ApiResponse<TenantBillingDto>.Ok(result);
@@ -56,7 +64,10 @@ public sealed class TenantBillingsController(IMediator mediator) : BaseApiContro
     [ProducesResponseType(typeof(ApiResponse<TenantBillingDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<TenantBillingDto>> Create(long tenantId, [FromBody, Required] CreateTenantBillingCommand command, CancellationToken cancellationToken)
     {
+        // 1. 绑定租户标识
         command = command with { TenantId = tenantId };
+
+        // 2. 创建账单
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<TenantBillingDto>.Ok(result);
     }
@@ -70,8 +81,13 @@ public sealed class TenantBillingsController(IMediator mediator) : BaseApiContro
     [ProducesResponseType(typeof(ApiResponse<TenantBillingDto>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<TenantBillingDto>> MarkPaid(long tenantId, long billingId, [FromBody, Required] MarkTenantBillingPaidCommand command, CancellationToken cancellationToken)
     {
+        // 1. 绑定租户与账单标识
         command = command with { TenantId = tenantId, BillingId = billingId };
+
+        // 2. 标记支付状态
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回结果或 404
         return result is null
             ? ApiResponse<TenantBillingDto>.Error(StatusCodes.Status404NotFound, "账单不存在")
             : ApiResponse<TenantBillingDto>.Ok(result);

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

@@ -27,8 +27,13 @@ public sealed class TenantNotificationsController(IMediator mediator) : BaseApiC
     [ProducesResponseType(typeof(ApiResponse<PagedResult<TenantNotificationDto>>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<PagedResult<TenantNotificationDto>>> Search(long tenantId, [FromQuery] SearchTenantNotificationsQuery query, CancellationToken cancellationToken)
     {
+        // 1. 绑定租户标识
         query = query with { TenantId = tenantId };
+
+        // 2. 查询通知列表
         var result = await mediator.Send(query, cancellationToken);
+
+        // 3. 返回分页结果
         return ApiResponse<PagedResult<TenantNotificationDto>>.Ok(result);
     }
 
@@ -41,7 +46,10 @@ public sealed class TenantNotificationsController(IMediator mediator) : BaseApiC
     [ProducesResponseType(typeof(ApiResponse<TenantNotificationDto>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<TenantNotificationDto>> MarkRead(long tenantId, long notificationId, CancellationToken cancellationToken)
     {
+        // 1. 标记通知为已读
         var result = await mediator.Send(new MarkTenantNotificationReadCommand { TenantId = tenantId, NotificationId = notificationId }, cancellationToken);
+
+        // 2. 返回结果或 404
         return result is null
             ? ApiResponse<TenantNotificationDto>.Error(StatusCodes.Status404NotFound, "通知不存在")
             : ApiResponse<TenantNotificationDto>.Ok(result);

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

@@ -28,7 +28,10 @@ public sealed class TenantPackagesController(IMediator mediator) : BaseApiContro
     [ProducesResponseType(typeof(ApiResponse<PagedResult<TenantPackageDto>>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<PagedResult<TenantPackageDto>>> Search([FromQuery] SearchTenantPackagesQuery query, CancellationToken cancellationToken)
     {
+        // 1. 查询租户套餐分页
         var result = await mediator.Send(query, cancellationToken);
+
+        // 2. 返回结果
         return ApiResponse<PagedResult<TenantPackageDto>>.Ok(result);
     }
 
@@ -41,7 +44,10 @@ public sealed class TenantPackagesController(IMediator mediator) : BaseApiContro
     [ProducesResponseType(typeof(ApiResponse<TenantPackageDto>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<TenantPackageDto>> Detail(long tenantPackageId, CancellationToken cancellationToken)
     {
+        // 1. 查询套餐详情
         var result = await mediator.Send(new GetTenantPackageByIdQuery { TenantPackageId = tenantPackageId }, cancellationToken);
+
+        // 2. 返回查询结果或 404
         return result is null
             ? ApiResponse<TenantPackageDto>.Error(StatusCodes.Status404NotFound, "套餐不存在")
             : ApiResponse<TenantPackageDto>.Ok(result);
@@ -55,7 +61,10 @@ public sealed class TenantPackagesController(IMediator mediator) : BaseApiContro
     [ProducesResponseType(typeof(ApiResponse<TenantPackageDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<TenantPackageDto>> Create([FromBody, Required] CreateTenantPackageCommand command, CancellationToken cancellationToken)
     {
+        // 1. 执行创建
         var result = await mediator.Send(command, cancellationToken);
+
+        // 2. 返回创建结果
         return ApiResponse<TenantPackageDto>.Ok(result);
     }
 
@@ -68,8 +77,13 @@ public sealed class TenantPackagesController(IMediator mediator) : BaseApiContro
     [ProducesResponseType(typeof(ApiResponse<TenantPackageDto>), StatusCodes.Status404NotFound)]
     public async Task<ApiResponse<TenantPackageDto>> Update(long tenantPackageId, [FromBody, Required] UpdateTenantPackageCommand command, CancellationToken cancellationToken)
     {
+        // 1. 绑定路由 ID
         command = command with { TenantPackageId = tenantPackageId };
+
+        // 2. 执行更新
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回更新结果或 404
         return result is null
             ? ApiResponse<TenantPackageDto>.Error(StatusCodes.Status404NotFound, "套餐不存在")
             : ApiResponse<TenantPackageDto>.Ok(result);
@@ -83,7 +97,10 @@ public sealed class TenantPackagesController(IMediator mediator) : BaseApiContro
     [ProducesResponseType(typeof(ApiResponse<bool>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<bool>> Delete(long tenantPackageId, CancellationToken cancellationToken)
     {
+        // 1. 构建删除命令
         var command = new DeleteTenantPackageCommand { TenantPackageId = tenantPackageId };
+
+        // 2. 执行删除并返回
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<bool>.Ok(result);
     }

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

@@ -29,7 +29,10 @@ public sealed class TenantsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<TenantDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<TenantDto>> Register([FromBody] RegisterTenantCommand command, CancellationToken cancellationToken)
     {
+        // 1. 注册租户并初始化套餐
         var result = await mediator.Send(command, cancellationToken);
+
+        // 2. 返回注册结果
         return ApiResponse<TenantDto>.Ok(result);
     }
 
@@ -41,7 +44,10 @@ public sealed class TenantsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<PagedResult<TenantDto>>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<PagedResult<TenantDto>>> Search([FromQuery] SearchTenantsQuery query, CancellationToken cancellationToken)
     {
+        // 1. 查询租户分页
         var result = await mediator.Send(query, cancellationToken);
+
+        // 2. 返回分页数据
         return ApiResponse<PagedResult<TenantDto>>.Ok(result);
     }
 
@@ -53,7 +59,10 @@ public sealed class TenantsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<TenantDetailDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<TenantDetailDto>> Detail(long tenantId, CancellationToken cancellationToken)
     {
+        // 1. 查询租户详情
         var result = await mediator.Send(new GetTenantByIdQuery(tenantId), cancellationToken);
+
+        // 2. 返回租户信息
         return ApiResponse<TenantDetailDto>.Ok(result);
     }
 
@@ -68,8 +77,13 @@ public sealed class TenantsController(IMediator mediator) : BaseApiController
         [FromBody] SubmitTenantVerificationCommand body,
         CancellationToken cancellationToken)
     {
+        // 1. 合并路由中的租户标识
         var command = body with { TenantId = tenantId };
+
+        // 2. 提交或更新认证资料
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回认证结果
         return ApiResponse<TenantVerificationDto>.Ok(result);
     }
 
@@ -81,8 +95,13 @@ public sealed class TenantsController(IMediator mediator) : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<TenantDto>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<TenantDto>> Review(long tenantId, [FromBody] ReviewTenantCommand body, CancellationToken cancellationToken)
     {
+        // 1. 绑定租户标识
         var command = body with { TenantId = tenantId };
+
+        // 2. 执行审核
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回审核结果
         return ApiResponse<TenantDto>.Ok(result);
     }
 
@@ -97,7 +116,10 @@ public sealed class TenantsController(IMediator mediator) : BaseApiController
         [FromBody] CreateTenantSubscriptionCommand body,
         CancellationToken cancellationToken)
     {
+        // 1. 绑定租户并创建或续费订阅
         var command = body with { TenantId = tenantId };
+
+        // 2. 返回订阅结果
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<TenantSubscriptionDto>.Ok(result);
     }
@@ -114,8 +136,13 @@ public sealed class TenantsController(IMediator mediator) : BaseApiController
         [FromBody] ChangeTenantSubscriptionPlanCommand body,
         CancellationToken cancellationToken)
     {
+        // 1. 绑定租户与订阅标识
         var command = body with { TenantId = tenantId, TenantSubscriptionId = subscriptionId };
+
+        // 2. 执行升降配
         var result = await mediator.Send(command, cancellationToken);
+
+        // 3. 返回调整后的订阅
         return ApiResponse<TenantSubscriptionDto>.Ok(result);
     }
 
@@ -131,7 +158,10 @@ public sealed class TenantsController(IMediator mediator) : BaseApiController
         [FromQuery] int pageSize = 20,
         CancellationToken cancellationToken = default)
     {
+        // 1. 构造审核日志查询
         var query = new GetTenantAuditLogsQuery(tenantId, page, pageSize);
+
+        // 2. 查询并返回分页结果
         var result = await mediator.Send(query, cancellationToken);
         return ApiResponse<PagedResult<TenantAuditLogDto>>.Ok(result);
     }
@@ -148,7 +178,10 @@ public sealed class TenantsController(IMediator mediator) : BaseApiController
         [FromBody, Required] CheckTenantQuotaCommand body,
         CancellationToken cancellationToken)
     {
+        // 1. 绑定租户标识
         var command = body with { TenantId = tenantId };
+
+        // 2. 校验并占用配额
         var result = await mediator.Send(command, cancellationToken);
         return ApiResponse<QuotaCheckResultDto>.Ok(result);
     }

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

@@ -58,6 +58,7 @@ public sealed class UserPermissionsController(IAdminAuthService authService) : B
         [FromQuery] SearchUserPermissionsQuery query,
         CancellationToken cancellationToken)
     {
+        // 1. 查询当前租户的用户权限概览
         var result = await authService.SearchUserPermissionsAsync(
             query.Keyword,
             query.Page,
@@ -66,6 +67,7 @@ public sealed class UserPermissionsController(IAdminAuthService authService) : B
             query.SortDescending,
             cancellationToken);
 
+        // 2. 返回分页结果
         return ApiResponse<PagedResult<UserPermissionDto>>.Ok(result);
     }
 }

src/Api/TakeoutSaaS.AdminApi/Program.cs

@@ -26,13 +26,16 @@ using TakeoutSaaS.Module.Tenancy.Extensions;
 using TakeoutSaaS.Shared.Web.Extensions;
 using TakeoutSaaS.Shared.Web.Swagger;
 
+// 1. 创建构建器与日志模板
 var builder = WebApplication.CreateBuilder(args);
 const string logTemplate = "[{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} {Level:u3}] [TraceId:{TraceId}] [SpanId:{SpanId}] [Service:{Service}] {SourceContext} {Message:lj}{NewLine}{Exception}";
 
+// 2. 加载种子配置文件
 builder.Configuration
     .AddJsonFile("appsettings.Seed.json", optional: true, reloadOnChange: true)
     .AddJsonFile($"appsettings.Seed.{builder.Environment.EnvironmentName}.json", optional: true, reloadOnChange: true);
 
+// 3. 配置 Serilog 输出
 builder.Host.UseSerilog((context, _, configuration) =>
 {
     configuration
@@ -47,6 +50,7 @@ builder.Host.UseSerilog((context, _, configuration) =>
             outputTemplate: logTemplate);
 });
 
+// 4. 注册通用 Web 能力与 Swagger
 builder.Services.AddSharedWebCore();
 builder.Services.AddSharedSwagger(options =>
 {
@@ -54,6 +58,8 @@ builder.Services.AddSharedSwagger(options =>
     options.Description = "管理后台 API 文档";
     options.EnableAuthorization = true;
 });
+
+// 5. 注册领域与基础设施模块
 builder.Services.AddIdentityApplication();
 builder.Services.AddIdentityInfrastructure(builder.Configuration, enableAdminSeed: true);
 builder.Services.AddAppInfrastructure(builder.Configuration);
@@ -71,6 +77,8 @@ builder.Services.AddMessagingModule(builder.Configuration);
 builder.Services.AddMessagingApplication();
 builder.Services.AddSchedulerModule(builder.Configuration);
 builder.Services.AddHealthChecks();
+
+// 6. 配置 OpenTelemetry 采集
 var otelSection = builder.Configuration.GetSection("Otel");
 var otelEndpoint = otelSection.GetValue<string>("Endpoint");
 var useConsoleExporter = otelSection.GetValue<bool?>("UseConsoleExporter") ?? builder.Environment.IsDevelopment();
@@ -86,7 +94,6 @@ builder.Services.AddOpenTelemetry()
             .AddAspNetCoreInstrumentation()
             .AddHttpClientInstrumentation()
             .AddEntityFrameworkCoreInstrumentation();
-
         if (!string.IsNullOrWhiteSpace(otelEndpoint))
         {
             tracing.AddOtlpExporter(exporter =>
@@ -94,7 +101,6 @@ builder.Services.AddOpenTelemetry()
                 exporter.Endpoint = new Uri(otelEndpoint);
             });
         }
-
         if (useConsoleExporter)
         {
             tracing.AddConsoleExporter();
@@ -107,7 +113,6 @@ builder.Services.AddOpenTelemetry()
             .AddHttpClientInstrumentation()
             .AddRuntimeInstrumentation()
             .AddPrometheusExporter();
-
         if (!string.IsNullOrWhiteSpace(otelEndpoint))
         {
             metrics.AddOtlpExporter(exporter =>
@@ -115,13 +120,13 @@ builder.Services.AddOpenTelemetry()
                 exporter.Endpoint = new Uri(otelEndpoint);
             });
         }
-
         if (useConsoleExporter)
         {
             metrics.AddConsoleExporter();
         }
     });
 
+// 7. 解析并配置 CORS
 var adminOrigins = ResolveCorsOrigins(builder.Configuration, "Cors:Admin");
 builder.Services.AddCors(options =>
 {
@@ -131,8 +136,8 @@ builder.Services.AddCors(options =>
     });
 });
 
+// 8. 构建应用并配置中间件管道
 var app = builder.Build();
-
 app.UseCors("AdminApiCors");
 app.UseTenantResolution();
 app.UseSharedWebCore();
@@ -140,12 +145,12 @@ app.UseAuthentication();
 app.UseAuthorization();
 app.UseSharedSwagger();
 app.UseSchedulerDashboard(builder.Configuration);
-
 app.MapHealthChecks("/healthz");
 app.MapPrometheusScrapingEndpoint();
 app.MapControllers();
 app.Run();
 
+// 9. 解析配置中的 CORS 域名
 static string[] ResolveCorsOrigins(IConfiguration configuration, string sectionKey)
 {
     var origins = configuration.GetSection(sectionKey).Get<string[]>();
@@ -155,6 +160,7 @@ static string[] ResolveCorsOrigins(IConfiguration configuration, string sectionK
         .ToArray() ?? [];
 }
 
+// 10. 构建 CORS 策略
 static void ConfigureCorsPolicy(CorsPolicyBuilder policy, string[] origins)
 {
     if (origins.Length == 0)
@@ -166,7 +172,6 @@ static void ConfigureCorsPolicy(CorsPolicyBuilder policy, string[] origins)
         policy.WithOrigins(origins)
             .AllowCredentials();
     }
-
     policy
         .AllowAnyHeader()
         .AllowAnyMethod();

src/Api/TakeoutSaaS.MiniApi/Controllers/AuthController.cs

@@ -10,17 +10,13 @@ namespace TakeoutSaaS.MiniApi.Controllers;
 /// <summary>
 /// 小程序登录认证
 /// </summary>
-/// <remarks>
+/// <remarks>提供小程序端的微信登录与 Token 刷新能力。</remarks>
-/// 小程序登录认证
+/// <param name="authService">小程序认证服务</param>
-/// </remarks>
-/// <param name="authService"></param>
 [ApiVersion("1.0")]
 [Authorize]
 [Route("api/mini/v{version:apiVersion}/auth")]
 public sealed class AuthController(IMiniAuthService authService) : BaseApiController
 {
-
-
     /// <summary>
     /// 微信登录
     /// </summary>
@@ -29,7 +25,10 @@ public sealed class AuthController(IMiniAuthService authService) : BaseApiContro
     [ProducesResponseType(typeof(ApiResponse<TokenResponse>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<TokenResponse>> LoginWithWeChat([FromBody] WeChatLoginRequest request, CancellationToken cancellationToken)
     {
+        // 1. 调用认证服务完成微信登录
         var response = await authService.LoginWithWeChatAsync(request, cancellationToken);
+
+        // 2. 返回访问与刷新令牌
         return ApiResponse<TokenResponse>.Ok(response);
     }
 
@@ -41,7 +40,10 @@ public sealed class AuthController(IMiniAuthService authService) : BaseApiContro
     [ProducesResponseType(typeof(ApiResponse<TokenResponse>), StatusCodes.Status200OK)]
     public async Task<ApiResponse<TokenResponse>> RefreshToken([FromBody] RefreshTokenRequest request, CancellationToken cancellationToken)
     {
+        // 1. 调用认证服务刷新 Token
         var response = await authService.RefreshTokenAsync(request, cancellationToken);
+
+        // 2. 返回新的令牌
         return ApiResponse<TokenResponse>.Ok(response);
     }
 }

src/Api/TakeoutSaaS.MiniApi/Controllers/FilesController.cs

@@ -19,8 +19,6 @@ namespace TakeoutSaaS.MiniApi.Controllers;
 [Route("api/mini/v{version:apiVersion}/files")]
 public sealed class FilesController(IFileStorageService fileStorageService) : BaseApiController
 {
-    private readonly IFileStorageService _fileStorageService = fileStorageService;
-
     /// <summary>
     /// 上传图片或文件。
     /// </summary>
@@ -30,23 +28,28 @@ public sealed class FilesController(IFileStorageService fileStorageService) : Ba
     [ProducesResponseType(typeof(ApiResponse<FileUploadResponse>), StatusCodes.Status400BadRequest)]
     public async Task<ApiResponse<FileUploadResponse>> Upload([FromForm] IFormFile? file, [FromForm] string? type, CancellationToken cancellationToken)
     {
+        // 1. 校验文件有效性
         if (file == null || file.Length == 0)
         {
             return ApiResponse<FileUploadResponse>.Error(ErrorCodes.BadRequest, "文件不能为空");
         }
 
+        // 2. 解析上传类型
         if (!UploadFileTypeParser.TryParse(type, out var uploadType))
         {
             return ApiResponse<FileUploadResponse>.Error(ErrorCodes.BadRequest, "上传类型不合法");
         }
 
+        // 3. 提取请求来源
         var origin = Request.Headers["Origin"].FirstOrDefault() ?? Request.Headers["Referer"].FirstOrDefault();
         await using var stream = file.OpenReadStream();
 
-        var result = await _fileStorageService.UploadAsync(
+        // 4. 调用存储服务执行上传
+        var result = await fileStorageService.UploadAsync(
             new UploadFileRequest(uploadType, stream, file.FileName, file.ContentType ?? string.Empty, file.Length, origin),
             cancellationToken);
 
+        // 5. 返回上传结果
         return ApiResponse<FileUploadResponse>.Ok(result);
     }
 }

src/Api/TakeoutSaaS.MiniApi/Controllers/HealthController.cs

@@ -23,7 +23,10 @@ public class HealthController : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status200OK)]
     public ApiResponse<object> Get()
     {
+        // 1. 构造健康状态
         var payload = new { status = "OK", service = "MiniApi", time = DateTime.UtcNow };
+
+        // 2. 返回健康响应
         return ApiResponse<object>.Ok(payload);
     }
 }

src/Api/TakeoutSaaS.MiniApi/Controllers/MeController.cs

@@ -16,17 +16,13 @@ namespace TakeoutSaaS.MiniApi.Controllers;
 /// <summary>
 /// 当前用户信息
 /// </summary>
-/// <remarks>
+/// <remarks>提供小程序端当前用户档案查询。</remarks>
-/// 
+/// <param name="authService">小程序认证服务</param>
-/// </remarks>
-/// <param name="authService"></param>
 [ApiVersion("1.0")]
 [Authorize]
 [Route("api/mini/v{version:apiVersion}/me")]
 public sealed class MeController(IMiniAuthService authService) : BaseApiController
 {
-
-
     /// <summary>
     /// 获取用户档案
     /// </summary>
@@ -35,12 +31,14 @@ public sealed class MeController(IMiniAuthService authService) : BaseApiControll
     [ProducesResponseType(typeof(ApiResponse<CurrentUserProfile>), StatusCodes.Status401Unauthorized)]
     public async Task<ApiResponse<CurrentUserProfile>> Get(CancellationToken cancellationToken)
     {
+        // 1. 从 JWT 中解析用户标识
         var userId = User.GetUserId();
         if (userId == 0)
         {
             return ApiResponse<CurrentUserProfile>.Error(ErrorCodes.Unauthorized, "Token 缺少有效的用户标识");
         }
 
+        // 2. 查询用户档案并返回
         var profile = await authService.GetProfileAsync(userId, cancellationToken);
         return ApiResponse<CurrentUserProfile>.Ok(profile);
     }

src/Api/TakeoutSaaS.MiniApi/Program.cs

@@ -18,9 +18,11 @@ using TakeoutSaaS.Shared.Kernel.Ids;
 using TakeoutSaaS.Shared.Web.Extensions;
 using TakeoutSaaS.Shared.Web.Swagger;
 
+// 1. 创建构建器与日志模板
 var builder = WebApplication.CreateBuilder(args);
 const string logTemplate = "[{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} {Level:u3}] [TraceId:{TraceId}] [SpanId:{SpanId}] [Service:{Service}] {SourceContext} {Message:lj}{NewLine}{Exception}";
 
+// 2. 注册雪花 ID 生成器与 Serilog
 builder.Services.AddSingleton<IIdGenerator>(_ => new SnowflakeIdGenerator());
 builder.Host.UseSerilog((_, _, configuration) =>
 {
@@ -36,6 +38,7 @@ builder.Host.UseSerilog((_, _, configuration) =>
             outputTemplate: logTemplate);
 });
 
+// 3. 注册通用 Web 能力与 Swagger
 builder.Services.AddSharedWebCore();
 builder.Services.AddSharedSwagger(options =>
 {
@@ -43,6 +46,8 @@ builder.Services.AddSharedSwagger(options =>
     options.Description = "小程序 API 文档";
     options.EnableAuthorization = true;
 });
+
+// 4. 注册多租户与业务模块
 builder.Services.AddTenantResolution(builder.Configuration);
 builder.Services.AddStorageModule(builder.Configuration);
 builder.Services.AddStorageApplication();
@@ -51,6 +56,8 @@ builder.Services.AddSmsApplication(builder.Configuration);
 builder.Services.AddMessagingModule(builder.Configuration);
 builder.Services.AddMessagingApplication();
 builder.Services.AddHealthChecks();
+
+// 5. 配置 OpenTelemetry 采集
 var otelSection = builder.Configuration.GetSection("Otel");
 var otelEndpoint = otelSection.GetValue<string>("Endpoint");
 var useConsoleExporter = otelSection.GetValue<bool?>("UseConsoleExporter") ?? builder.Environment.IsDevelopment();
@@ -102,6 +109,7 @@ builder.Services.AddOpenTelemetry()
         }
     });
 
+// 6. 配置 CORS
 var miniOrigins = ResolveCorsOrigins(builder.Configuration, "Cors:Mini");
 builder.Services.AddCors(options =>
 {
@@ -111,6 +119,7 @@ builder.Services.AddCors(options =>
     });
 });
 
+// 7. 构建应用并配置中间件管道
 var app = builder.Build();
 
 app.UseCors("MiniApiCors");
@@ -123,6 +132,7 @@ app.MapPrometheusScrapingEndpoint();
 app.MapControllers();
 app.Run();
 
+// 8. 解析配置中的 CORS 域名
 static string[] ResolveCorsOrigins(IConfiguration configuration, string sectionKey)
 {
     var origins = configuration.GetSection(sectionKey).Get<string[]>();
@@ -132,6 +142,7 @@ static string[] ResolveCorsOrigins(IConfiguration configuration, string sectionK
         .ToArray() ?? [];
 }
 
+// 9. 构建 CORS 策略
 static void ConfigureCorsPolicy(CorsPolicyBuilder policy, string[] origins)
 {
     if (origins.Length == 0)

src/Api/TakeoutSaaS.UserApi/Controllers/HealthController.cs

@@ -23,7 +23,10 @@ public class HealthController : BaseApiController
     [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status200OK)]
     public ApiResponse<object> Get()
     {
+        // 1. 构造健康状态
         var payload = new { status = "OK", service = "UserApi", time = DateTime.UtcNow };
+
+        // 2. 返回健康响应
         return ApiResponse<object>.Ok(payload);
     }
 }

src/Api/TakeoutSaaS.UserApi/Program.cs

@@ -12,9 +12,11 @@ using TakeoutSaaS.Shared.Kernel.Ids;
 using TakeoutSaaS.Shared.Web.Extensions;
 using TakeoutSaaS.Shared.Web.Swagger;
 
+// 1. 创建构建器与日志模板
 var builder = WebApplication.CreateBuilder(args);
 const string logTemplate = "[{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} {Level:u3}] [TraceId:{TraceId}] [SpanId:{SpanId}] [Service:{Service}] {SourceContext} {Message:lj}{NewLine}{Exception}";
 
+// 2. 注册雪花 ID 生成器与 Serilog
 builder.Services.AddSingleton<IIdGenerator>(_ => new SnowflakeIdGenerator());
 builder.Host.UseSerilog((_, _, configuration) =>
 {
@@ -30,6 +32,7 @@ builder.Host.UseSerilog((_, _, configuration) =>
             outputTemplate: logTemplate);
 });
 
+// 3. 注册通用 Web 能力与 Swagger
 builder.Services.AddSharedWebCore();
 builder.Services.AddSharedSwagger(options =>
 {
@@ -37,8 +40,12 @@ builder.Services.AddSharedSwagger(options =>
     options.Description = "C 端用户 API 文档";
     options.EnableAuthorization = true;
 });
+
+// 4. 注册多租户与健康检查
 builder.Services.AddTenantResolution(builder.Configuration);
 builder.Services.AddHealthChecks();
+
+// 5. 配置 OpenTelemetry 采集
 var otelSection = builder.Configuration.GetSection("Otel");
 var otelEndpoint = otelSection.GetValue<string>("Endpoint");
 var useConsoleExporter = otelSection.GetValue<bool?>("UseConsoleExporter") ?? builder.Environment.IsDevelopment();
@@ -90,6 +97,7 @@ builder.Services.AddOpenTelemetry()
         }
     });
 
+// 6. 配置 CORS
 var userOrigins = ResolveCorsOrigins(builder.Configuration, "Cors:User");
 builder.Services.AddCors(options =>
 {
@@ -99,6 +107,7 @@ builder.Services.AddCors(options =>
     });
 });
 
+// 7. 构建应用并配置中间件管道
 var app = builder.Build();
 
 app.UseCors("UserApiCors");
@@ -111,6 +120,7 @@ app.MapPrometheusScrapingEndpoint();
 app.MapControllers();
 app.Run();
 
+// 8. 解析配置中的 CORS 域名
 static string[] ResolveCorsOrigins(IConfiguration configuration, string sectionKey)
 {
     var origins = configuration.GetSection(sectionKey).Get<string[]>();
@@ -120,6 +130,7 @@ static string[] ResolveCorsOrigins(IConfiguration configuration, string sectionK
         .ToArray() ?? [];
 }
 
+// 9. 构建 CORS 策略
 static void ConfigureCorsPolicy(CorsPolicyBuilder policy, string[] origins)
 {
     if (origins.Length == 0)

src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/CreateDeliveryOrderCommandHandler.cs

@@ -13,12 +13,10 @@ namespace TakeoutSaaS.Application.App.Deliveries.Handlers;
 public sealed class CreateDeliveryOrderCommandHandler(IDeliveryRepository deliveryRepository, ILogger<CreateDeliveryOrderCommandHandler> logger)
     : IRequestHandler<CreateDeliveryOrderCommand, DeliveryOrderDto>
 {
-    private readonly IDeliveryRepository _deliveryRepository = deliveryRepository;
-    private readonly ILogger<CreateDeliveryOrderCommandHandler> _logger = logger;
-
     /// <inheritdoc />
     public async Task<DeliveryOrderDto> Handle(CreateDeliveryOrderCommand request, CancellationToken cancellationToken)
     {
+        // 1. 构建配送单实体
         var deliveryOrder = new DeliveryOrder
         {
             OrderId = request.OrderId,
@@ -34,10 +32,14 @@ public sealed class CreateDeliveryOrderCommandHandler(IDeliveryRepository delive
             FailureReason = request.FailureReason?.Trim()
         };
 
-        await _deliveryRepository.AddDeliveryOrderAsync(deliveryOrder, cancellationToken);
+        // 2. 持久化配送单
-        await _deliveryRepository.SaveChangesAsync(cancellationToken);
+        await deliveryRepository.AddDeliveryOrderAsync(deliveryOrder, cancellationToken);
-        _logger.LogInformation("创建配送单 {DeliveryOrderId} 对应订单 {OrderId}", deliveryOrder.Id, deliveryOrder.OrderId);
+        await deliveryRepository.SaveChangesAsync(cancellationToken);
 
+        // 3. 记录日志
+        logger.LogInformation("创建配送单 {DeliveryOrderId} 对应订单 {OrderId}", deliveryOrder.Id, deliveryOrder.OrderId);
+
+        // 4. 映射 DTO 返回
         return MapToDto(deliveryOrder, []);
     }
 

src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/DeleteDeliveryOrderCommandHandler.cs

@@ -15,23 +15,23 @@ public sealed class DeleteDeliveryOrderCommandHandler(
     ILogger<DeleteDeliveryOrderCommandHandler> logger)
     : IRequestHandler<DeleteDeliveryOrderCommand, bool>
 {
-    private readonly IDeliveryRepository _deliveryRepository = deliveryRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-    private readonly ILogger<DeleteDeliveryOrderCommandHandler> _logger = logger;
-
     /// <inheritdoc />
     public async Task<bool> Handle(DeleteDeliveryOrderCommand request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取租户并定位配送单
-        var existing = await _deliveryRepository.FindByIdAsync(request.DeliveryOrderId, tenantId, cancellationToken);
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var existing = await deliveryRepository.FindByIdAsync(request.DeliveryOrderId, tenantId, cancellationToken);
         if (existing == null)
         {
             return false;
         }
 
-        await _deliveryRepository.DeleteDeliveryOrderAsync(request.DeliveryOrderId, tenantId, cancellationToken);
+        // 2. 删除并保存
-        await _deliveryRepository.SaveChangesAsync(cancellationToken);
+        await deliveryRepository.DeleteDeliveryOrderAsync(request.DeliveryOrderId, tenantId, cancellationToken);
-        _logger.LogInformation("删除配送单 {DeliveryOrderId}", request.DeliveryOrderId);
+        await deliveryRepository.SaveChangesAsync(cancellationToken);
+
+        // 3. 记录删除日志
+        logger.LogInformation("删除配送单 {DeliveryOrderId}", request.DeliveryOrderId);
 
         return true;
     }

src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/GetDeliveryOrderByIdQueryHandler.cs

@@ -15,20 +15,23 @@ public sealed class GetDeliveryOrderByIdQueryHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<GetDeliveryOrderByIdQuery, DeliveryOrderDto?>
 {
-    private readonly IDeliveryRepository _deliveryRepository = deliveryRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     /// <inheritdoc />
     public async Task<DeliveryOrderDto?> Handle(GetDeliveryOrderByIdQuery request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 读取当前租户标识
-        var order = await _deliveryRepository.FindByIdAsync(request.DeliveryOrderId, tenantId, cancellationToken);
+        var tenantId = tenantProvider.GetCurrentTenantId();
+
+        // 2. 查询配送单主体
+        var order = await deliveryRepository.FindByIdAsync(request.DeliveryOrderId, tenantId, cancellationToken);
         if (order == null)
         {
             return null;
         }
 
-        var events = await _deliveryRepository.GetEventsAsync(order.Id, tenantId, cancellationToken);
+        // 3. 查询配送事件明细
+        var events = await deliveryRepository.GetEventsAsync(order.Id, tenantId, cancellationToken);
+
+        // 4. 映射为 DTO 返回
         return MapToDto(order, events);
     }
 

src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/SearchDeliveryOrdersQueryHandler.cs

@@ -15,21 +15,25 @@ public sealed class SearchDeliveryOrdersQueryHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<SearchDeliveryOrdersQuery, PagedResult<DeliveryOrderDto>>
 {
-    private readonly IDeliveryRepository _deliveryRepository = deliveryRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     /// <inheritdoc />
     public async Task<PagedResult<DeliveryOrderDto>> Handle(SearchDeliveryOrdersQuery request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取当前租户标识
-        var orders = await _deliveryRepository.SearchAsync(tenantId, request.Status, request.OrderId, cancellationToken);
+        var tenantId = tenantProvider.GetCurrentTenantId();
 
+        // 2. 查询配送单列表（租户隔离）
+        var orders = await deliveryRepository.SearchAsync(tenantId, request.Status, request.OrderId, cancellationToken);
+
+        // 3. 本地排序
         var sorted = ApplySorting(orders, request.SortBy, request.SortDescending);
+
+        // 4. 本地分页
         var paged = sorted
             .Skip((request.Page - 1) * request.PageSize)
             .Take(request.PageSize)
             .ToList();
 
+        // 5. 映射 DTO
         var items = paged.Select(order => new DeliveryOrderDto
         {
             Id = order.Id,
@@ -48,6 +52,7 @@ public sealed class SearchDeliveryOrdersQueryHandler(
             CreatedAt = order.CreatedAt
         }).ToList();
 
+        // 6. 返回分页结果
         return new PagedResult<DeliveryOrderDto>(items, request.Page, request.PageSize, orders.Count);
     }
 

src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/UpdateDeliveryOrderCommandHandler.cs

@@ -17,20 +17,20 @@ public sealed class UpdateDeliveryOrderCommandHandler(
     ILogger<UpdateDeliveryOrderCommandHandler> logger)
     : IRequestHandler<UpdateDeliveryOrderCommand, DeliveryOrderDto?>
 {
-    private readonly IDeliveryRepository _deliveryRepository = deliveryRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-    private readonly ILogger<UpdateDeliveryOrderCommandHandler> _logger = logger;
-
     /// <inheritdoc />
     public async Task<DeliveryOrderDto?> Handle(UpdateDeliveryOrderCommand request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取当前租户标识
-        var existing = await _deliveryRepository.FindByIdAsync(request.DeliveryOrderId, tenantId, cancellationToken);
+        var tenantId = tenantProvider.GetCurrentTenantId();
+
+        // 2. 查询目标配送单
+        var existing = await deliveryRepository.FindByIdAsync(request.DeliveryOrderId, tenantId, cancellationToken);
         if (existing == null)
         {
             return null;
         }
 
+        // 3. 更新字段
         existing.OrderId = request.OrderId;
         existing.Provider = request.Provider;
         existing.ProviderOrderId = request.ProviderOrderId?.Trim();
@@ -43,11 +43,15 @@ public sealed class UpdateDeliveryOrderCommandHandler(
         existing.DeliveredAt = request.DeliveredAt;
         existing.FailureReason = request.FailureReason?.Trim();
 
-        await _deliveryRepository.UpdateDeliveryOrderAsync(existing, cancellationToken);
+        // 4. 持久化变更
-        await _deliveryRepository.SaveChangesAsync(cancellationToken);
+        await deliveryRepository.UpdateDeliveryOrderAsync(existing, cancellationToken);
-        _logger.LogInformation("更新配送单 {DeliveryOrderId}", existing.Id);
+        await deliveryRepository.SaveChangesAsync(cancellationToken);
 
-        var events = await _deliveryRepository.GetEventsAsync(existing.Id, tenantId, cancellationToken);
+        // 5. 记录更新日志
+        logger.LogInformation("更新配送单 {DeliveryOrderId}", existing.Id);
+
+        // 6. 查询事件并返回映射结果
+        var events = await deliveryRepository.GetEventsAsync(existing.Id, tenantId, cancellationToken);
         return MapToDto(existing, events);
     }
 

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/AddMerchantDocumentCommandHandler.cs

@@ -22,20 +22,17 @@ public sealed class AddMerchantDocumentCommandHandler(
     ICurrentUserAccessor currentUserAccessor)
     : IRequestHandler<AddMerchantDocumentCommand, MerchantDocumentDto>
 {
-    private readonly IMerchantRepository _merchantRepository = merchantRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-    private readonly IIdGenerator _idGenerator = idGenerator;
-    private readonly ICurrentUserAccessor _currentUserAccessor = currentUserAccessor;
-
     public async Task<MerchantDocumentDto> Handle(AddMerchantDocumentCommand request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取租户并查询商户
-        var merchant = await _merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken)
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var merchant = await merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken)
             ?? throw new BusinessException(ErrorCodes.NotFound, "商户不存在");
 
+        // 2. 构建证照记录
         var document = new MerchantDocument
         {
-            Id = _idGenerator.NextId(),
+            Id = idGenerator.NextId(),
             MerchantId = merchant.Id,
             DocumentType = request.DocumentType,
             Status = MerchantDocumentStatus.Pending,
@@ -45,8 +42,9 @@ public sealed class AddMerchantDocumentCommandHandler(
             ExpiresAt = request.ExpiresAt
         };
 
-        await _merchantRepository.AddDocumentAsync(document, cancellationToken);
+        // 3. 持久化与审计
-        await _merchantRepository.AddAuditLogAsync(new MerchantAuditLog
+        await merchantRepository.AddDocumentAsync(document, cancellationToken);
+        await merchantRepository.AddAuditLogAsync(new MerchantAuditLog
         {
             TenantId = tenantId,
             MerchantId = merchant.Id,
@@ -57,20 +55,21 @@ public sealed class AddMerchantDocumentCommandHandler(
             OperatorName = ResolveOperatorName()
         }, cancellationToken);
 
-        await _merchantRepository.SaveChangesAsync(cancellationToken);
+        await merchantRepository.SaveChangesAsync(cancellationToken);
 
+        // 4. 返回 DTO
         return MerchantMapping.ToDto(document);
     }
 
     private long? ResolveOperatorId()
     {
-        var id = _currentUserAccessor.UserId;
+        var id = currentUserAccessor.UserId;
         return id == 0 ? null : id;
     }
 
     private string ResolveOperatorName()
     {
-        var id = _currentUserAccessor.UserId;
+        var id = currentUserAccessor.UserId;
         return id == 0 ? "system" : $"user:{id}";
     }
 }

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/CreateMerchantCategoryCommandHandler.cs

@@ -18,22 +18,23 @@ public sealed class CreateMerchantCategoryCommandHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<CreateMerchantCategoryCommand, MerchantCategoryDto>
 {
-    private readonly IMerchantCategoryRepository _categoryRepository = categoryRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     public async Task<MerchantCategoryDto> Handle(CreateMerchantCategoryCommand request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取租户上下文
+        var tenantId = tenantProvider.GetCurrentTenantId();
         var normalizedName = request.Name.Trim();
 
-        if (await _categoryRepository.ExistsAsync(normalizedName, tenantId, cancellationToken))
+        // 2. 检查重名
+        if (await categoryRepository.ExistsAsync(normalizedName, tenantId, cancellationToken))
         {
             throw new BusinessException(ErrorCodes.Conflict, $"类目“{normalizedName}”已存在");
         }
 
-        var categories = await _categoryRepository.ListAsync(tenantId, cancellationToken);
+        // 3. 计算排序
+        var categories = await categoryRepository.ListAsync(tenantId, cancellationToken);
         var targetOrder = request.DisplayOrder ?? (categories.Count == 0 ? 1 : categories.Max(x => x.DisplayOrder) + 1);
 
+        // 4. 构建实体
         var entity = new MerchantCategory
         {
             Name = normalizedName,
@@ -41,8 +42,9 @@ public sealed class CreateMerchantCategoryCommandHandler(
             IsActive = request.IsActive
         };
 
-        await _categoryRepository.AddAsync(entity, cancellationToken);
+        // 5. 持久化并返回
-        await _categoryRepository.SaveChangesAsync(cancellationToken);
+        await categoryRepository.AddAsync(entity, cancellationToken);
+        await categoryRepository.SaveChangesAsync(cancellationToken);
 
         return MerchantMapping.ToDto(entity);
     }

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/CreateMerchantCommandHandler.cs

@@ -13,12 +13,10 @@ namespace TakeoutSaaS.Application.App.Merchants.Handlers;
 public sealed class CreateMerchantCommandHandler(IMerchantRepository merchantRepository, ILogger<CreateMerchantCommandHandler> logger)
     : IRequestHandler<CreateMerchantCommand, MerchantDto>
 {
-    private readonly IMerchantRepository _merchantRepository = merchantRepository;
-    private readonly ILogger<CreateMerchantCommandHandler> _logger = logger;
-
     /// <inheritdoc />
     public async Task<MerchantDto> Handle(CreateMerchantCommand request, CancellationToken cancellationToken)
     {
+        // 1. 构建商户实体
         var merchant = new Merchant
         {
             BrandName = request.BrandName.Trim(),
@@ -31,10 +29,12 @@ public sealed class CreateMerchantCommandHandler(IMerchantRepository merchantRep
             JoinedAt = DateTime.UtcNow
         };
 
-        await _merchantRepository.AddMerchantAsync(merchant, cancellationToken);
+        // 2. 持久化
-        await _merchantRepository.SaveChangesAsync(cancellationToken);
+        await merchantRepository.AddMerchantAsync(merchant, cancellationToken);
+        await merchantRepository.SaveChangesAsync(cancellationToken);
 
-        _logger.LogInformation("创建商户 {MerchantId} - {BrandName}", merchant.Id, merchant.BrandName);
+        // 3. 记录日志
+        logger.LogInformation("创建商户 {MerchantId} - {BrandName}", merchant.Id, merchant.BrandName);
         return MapToDto(merchant);
     }
 

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/CreateMerchantContractCommandHandler.cs

@@ -22,25 +22,23 @@ public sealed class CreateMerchantContractCommandHandler(
     ICurrentUserAccessor currentUserAccessor)
     : IRequestHandler<CreateMerchantContractCommand, MerchantContractDto>
 {
-    private readonly IMerchantRepository _merchantRepository = merchantRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-    private readonly IIdGenerator _idGenerator = idGenerator;
-    private readonly ICurrentUserAccessor _currentUserAccessor = currentUserAccessor;
-
     public async Task<MerchantContractDto> Handle(CreateMerchantContractCommand request, CancellationToken cancellationToken)
     {
+        // 1. 校验时间
         if (request.EndDate <= request.StartDate)
         {
             throw new BusinessException(ErrorCodes.BadRequest, "合同结束时间必须晚于开始时间");
         }
 
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 2. 查询商户
-        var merchant = await _merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken)
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var merchant = await merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken)
                        ?? throw new BusinessException(ErrorCodes.NotFound, "商户不存在");
 
+        // 3. 构建合同
         var contract = new MerchantContract
         {
-            Id = _idGenerator.NextId(),
+            Id = idGenerator.NextId(),
             MerchantId = merchant.Id,
             ContractNumber = request.ContractNumber.Trim(),
             StartDate = request.StartDate,
@@ -48,8 +46,9 @@ public sealed class CreateMerchantContractCommandHandler(
             FileUrl = request.FileUrl.Trim()
         };
 
-        await _merchantRepository.AddContractAsync(contract, cancellationToken);
+        // 4. 持久化与审计
-        await _merchantRepository.AddAuditLogAsync(new MerchantAuditLog
+        await merchantRepository.AddContractAsync(contract, cancellationToken);
+        await merchantRepository.AddAuditLogAsync(new MerchantAuditLog
         {
             TenantId = tenantId,
             MerchantId = merchant.Id,
@@ -60,19 +59,21 @@ public sealed class CreateMerchantContractCommandHandler(
             OperatorName = ResolveOperatorName()
         }, cancellationToken);
 
-        await _merchantRepository.SaveChangesAsync(cancellationToken);
+        await merchantRepository.SaveChangesAsync(cancellationToken);
+
+        // 5. 返回 DTO
         return MerchantMapping.ToDto(contract);
     }
 
     private long? ResolveOperatorId()
     {
-        var id = _currentUserAccessor.UserId;
+        var id = currentUserAccessor.UserId;
         return id == 0 ? null : id;
     }
 
     private string ResolveOperatorName()
     {
-        var id = _currentUserAccessor.UserId;
+        var id = currentUserAccessor.UserId;
         return id == 0 ? "system" : $"user:{id}";
     }
 }

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/DeleteMerchantCategoryCommandHandler.cs

@@ -13,21 +13,20 @@ public sealed class DeleteMerchantCategoryCommandHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<DeleteMerchantCategoryCommand, bool>
 {
-    private readonly IMerchantCategoryRepository _categoryRepository = categoryRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     public async Task<bool> Handle(DeleteMerchantCategoryCommand request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取租户上下文
-        var existing = await _categoryRepository.FindByIdAsync(request.CategoryId, tenantId, cancellationToken);
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var existing = await categoryRepository.FindByIdAsync(request.CategoryId, tenantId, cancellationToken);
 
         if (existing == null)
         {
             return false;
         }
 
-        await _categoryRepository.RemoveAsync(existing, cancellationToken);
+        // 2. 删除并保存
-        await _categoryRepository.SaveChangesAsync(cancellationToken);
+        await categoryRepository.RemoveAsync(existing, cancellationToken);
+        await categoryRepository.SaveChangesAsync(cancellationToken);
         return true;
     }
 }

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/DeleteMerchantCommandHandler.cs

@@ -15,25 +15,21 @@ public sealed class DeleteMerchantCommandHandler(
     ILogger<DeleteMerchantCommandHandler> logger)
     : IRequestHandler<DeleteMerchantCommand, bool>
 {
-    private readonly IMerchantRepository _merchantRepository = merchantRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-    private readonly ILogger<DeleteMerchantCommandHandler> _logger = logger;
-
     /// <inheritdoc />
     public async Task<bool> Handle(DeleteMerchantCommand request, CancellationToken cancellationToken)
     {
         // 1. 校验存在性
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        var tenantId = tenantProvider.GetCurrentTenantId();
-        var existing = await _merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken);
+        var existing = await merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken);
         if (existing == null)
         {
             return false;
         }
 
         // 2. 删除
-        await _merchantRepository.DeleteMerchantAsync(request.MerchantId, tenantId, cancellationToken);
+        await merchantRepository.DeleteMerchantAsync(request.MerchantId, tenantId, cancellationToken);
-        await _merchantRepository.SaveChangesAsync(cancellationToken);
+        await merchantRepository.SaveChangesAsync(cancellationToken);
-        _logger.LogInformation("删除商户 {MerchantId}", request.MerchantId);
+        logger.LogInformation("删除商户 {MerchantId}", request.MerchantId);
 
         return true;
     }

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/GetMerchantAuditLogsQueryHandler.cs

@@ -16,20 +16,21 @@ public sealed class GetMerchantAuditLogsQueryHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<GetMerchantAuditLogsQuery, PagedResult<MerchantAuditLogDto>>
 {
-    private readonly IMerchantRepository _merchantRepository = merchantRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     public async Task<PagedResult<MerchantAuditLogDto>> Handle(GetMerchantAuditLogsQuery request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取租户上下文并查询日志
-        var logs = await _merchantRepository.GetAuditLogsAsync(request.MerchantId, tenantId, cancellationToken);
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var logs = await merchantRepository.GetAuditLogsAsync(request.MerchantId, tenantId, cancellationToken);
         var total = logs.Count;
+
+        // 2. 分页映射
         var paged = logs
             .Skip((request.Page - 1) * request.PageSize)
             .Take(request.PageSize)
             .Select(MerchantMapping.ToDto)
             .ToList();
 
+        // 3. 返回结果
         return new PagedResult<MerchantAuditLogDto>(paged, request.Page, request.PageSize, total);
     }
 }

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/GetMerchantByIdQueryHandler.cs

@@ -12,19 +12,18 @@ namespace TakeoutSaaS.Application.App.Merchants.Handlers;
 public sealed class GetMerchantByIdQueryHandler(IMerchantRepository merchantRepository, ITenantProvider tenantProvider)
     : IRequestHandler<GetMerchantByIdQuery, MerchantDto?>
 {
-    private readonly IMerchantRepository _merchantRepository = merchantRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     /// <inheritdoc />
     public async Task<MerchantDto?> Handle(GetMerchantByIdQuery request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取租户上下文
-        var merchant = await _merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken);
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var merchant = await merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken);
         if (merchant == null)
         {
             return null;
         }
 
+        // 2. 返回 DTO
         return new MerchantDto
         {
             Id = merchant.Id,

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/GetMerchantCategoriesQueryHandler.cs

@@ -15,14 +15,13 @@ public sealed class GetMerchantCategoriesQueryHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<GetMerchantCategoriesQuery, IReadOnlyList<string>>
 {
-    private readonly IMerchantCategoryRepository _categoryRepository = categoryRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     public async Task<IReadOnlyList<string>> Handle(GetMerchantCategoriesQuery request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取租户上下文并读取类目
-        var categories = await _categoryRepository.ListAsync(tenantId, cancellationToken);
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var categories = await categoryRepository.ListAsync(tenantId, cancellationToken);
 
+        // 2. 过滤启用类目并去重
         return categories
             .Where(x => x.IsActive)
             .Select(x => x.Name.Trim())

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/GetMerchantContractsQueryHandler.cs

@@ -17,16 +17,15 @@ public sealed class GetMerchantContractsQueryHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<GetMerchantContractsQuery, IReadOnlyList<MerchantContractDto>>
 {
-    private readonly IMerchantRepository _merchantRepository = merchantRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     public async Task<IReadOnlyList<MerchantContractDto>> Handle(GetMerchantContractsQuery request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取租户上下文并校验商户存在
-        _ = await _merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken)
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        _ = await merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken)
             ?? throw new BusinessException(ErrorCodes.NotFound, "商户不存在");
 
-        var contracts = await _merchantRepository.GetContractsAsync(request.MerchantId, tenantId, cancellationToken);
+        // 2. 查询合同列表
+        var contracts = await merchantRepository.GetContractsAsync(request.MerchantId, tenantId, cancellationToken);
         return MerchantMapping.ToContractDtos(contracts);
     }
 }

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/GetMerchantDetailQueryHandler.cs

@@ -16,18 +16,18 @@ public sealed class GetMerchantDetailQueryHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<GetMerchantDetailQuery, MerchantDetailDto>
 {
-    private readonly IMerchantRepository _merchantRepository = merchantRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     public async Task<MerchantDetailDto> Handle(GetMerchantDetailQuery request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取租户上下文并查询商户
-        var merchant = await _merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken)
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var merchant = await merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken)
                        ?? throw new BusinessException(ErrorCodes.NotFound, "商户不存在");
 
-        var documents = await _merchantRepository.GetDocumentsAsync(request.MerchantId, tenantId, cancellationToken);
+        // 2. 查询证照与合同
-        var contracts = await _merchantRepository.GetContractsAsync(request.MerchantId, tenantId, cancellationToken);
+        var documents = await merchantRepository.GetDocumentsAsync(request.MerchantId, tenantId, cancellationToken);
+        var contracts = await merchantRepository.GetContractsAsync(request.MerchantId, tenantId, cancellationToken);
 
+        // 3. 返回明细 DTO
         return new MerchantDetailDto
         {
             Merchant = MerchantMapping.ToDto(merchant),

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/GetMerchantDocumentsQueryHandler.cs

@@ -17,16 +17,15 @@ public sealed class GetMerchantDocumentsQueryHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<GetMerchantDocumentsQuery, IReadOnlyList<MerchantDocumentDto>>
 {
-    private readonly IMerchantRepository _merchantRepository = merchantRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     public async Task<IReadOnlyList<MerchantDocumentDto>> Handle(GetMerchantDocumentsQuery request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取租户上下文并校验商户存在
-        _ = await _merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken)
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        _ = await merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken)
             ?? throw new BusinessException(ErrorCodes.NotFound, "商户不存在");
 
-        var documents = await _merchantRepository.GetDocumentsAsync(request.MerchantId, tenantId, cancellationToken);
+        // 2. 查询证照列表
+        var documents = await merchantRepository.GetDocumentsAsync(request.MerchantId, tenantId, cancellationToken);
         return MerchantMapping.ToDocumentDtos(documents);
     }
 }

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/ListMerchantCategoriesQueryHandler.cs

@@ -15,13 +15,13 @@ public sealed class ListMerchantCategoriesQueryHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<ListMerchantCategoriesQuery, IReadOnlyList<MerchantCategoryDto>>
 {
-    private readonly IMerchantCategoryRepository _categoryRepository = categoryRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     public async Task<IReadOnlyList<MerchantCategoryDto>> Handle(ListMerchantCategoriesQuery request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取租户上下文
-        var categories = await _categoryRepository.ListAsync(tenantId, cancellationToken);
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var categories = await categoryRepository.ListAsync(tenantId, cancellationToken);
+
+        // 2. 映射 DTO
         return MerchantMapping.ToCategoryDtos(categories);
     }
 }

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/ReorderMerchantCategoriesCommandHandler.cs

@@ -16,15 +16,14 @@ public sealed class ReorderMerchantCategoriesCommandHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<ReorderMerchantCategoriesCommand, bool>
 {
-    private readonly IMerchantCategoryRepository _categoryRepository = categoryRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     public async Task<bool> Handle(ReorderMerchantCategoriesCommand request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取租户并查询类目
-        var categories = await _categoryRepository.ListAsync(tenantId, cancellationToken);
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var categories = await categoryRepository.ListAsync(tenantId, cancellationToken);
         var map = categories.ToDictionary(x => x.Id);
 
+        // 2. 更新排序
         foreach (var item in request.Items)
         {
             if (!map.TryGetValue(item.CategoryId, out var category))
@@ -35,8 +34,9 @@ public sealed class ReorderMerchantCategoriesCommandHandler(
             category.DisplayOrder = item.DisplayOrder;
         }
 
-        await _categoryRepository.UpdateRangeAsync(map.Values, cancellationToken);
+        // 3. 持久化
-        await _categoryRepository.SaveChangesAsync(cancellationToken);
+        await categoryRepository.UpdateRangeAsync(map.Values, cancellationToken);
+        await categoryRepository.SaveChangesAsync(cancellationToken);
         return true;
     }
 }

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/ReviewMerchantCommandHandler.cs

@@ -20,21 +20,20 @@ public sealed class ReviewMerchantCommandHandler(
     ICurrentUserAccessor currentUserAccessor)
     : IRequestHandler<ReviewMerchantCommand, MerchantDto>
 {
-    private readonly IMerchantRepository _merchantRepository = merchantRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-    private readonly ICurrentUserAccessor _currentUserAccessor = currentUserAccessor;
-
     public async Task<MerchantDto> Handle(ReviewMerchantCommand request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 读取商户
-        var merchant = await _merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken)
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var merchant = await merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken)
                        ?? throw new BusinessException(ErrorCodes.NotFound, "商户不存在");
 
+        // 2. 已审核通过则直接返回
         if (request.Approve && merchant.Status == MerchantStatus.Approved)
         {
             return MerchantMapping.ToDto(merchant);
         }
 
+        // 3. 更新审核状态
         var previousStatus = merchant.Status;
         merchant.Status = request.Approve ? MerchantStatus.Approved : MerchantStatus.Rejected;
         merchant.ReviewRemarks = request.Remarks;
@@ -44,8 +43,9 @@ public sealed class ReviewMerchantCommandHandler(
             merchant.JoinedAt = DateTime.UtcNow;
         }
 
-        await _merchantRepository.UpdateMerchantAsync(merchant, cancellationToken);
+        // 4. 持久化与审计
-        await _merchantRepository.AddAuditLogAsync(new MerchantAuditLog
+        await merchantRepository.UpdateMerchantAsync(merchant, cancellationToken);
+        await merchantRepository.AddAuditLogAsync(new MerchantAuditLog
         {
             TenantId = tenantId,
             MerchantId = merchant.Id,
@@ -55,20 +55,21 @@ public sealed class ReviewMerchantCommandHandler(
             OperatorId = ResolveOperatorId(),
             OperatorName = ResolveOperatorName()
         }, cancellationToken);
-        await _merchantRepository.SaveChangesAsync(cancellationToken);
+        await merchantRepository.SaveChangesAsync(cancellationToken);
 
+        // 5. 返回 DTO
         return MerchantMapping.ToDto(merchant);
     }
 
     private long? ResolveOperatorId()
     {
-        var id = _currentUserAccessor.UserId;
+        var id = currentUserAccessor.UserId;
         return id == 0 ? null : id;
     }
 
     private string ResolveOperatorName()
     {
-        var id = _currentUserAccessor.UserId;
+        var id = currentUserAccessor.UserId;
         return id == 0 ? "system" : $"user:{id}";
     }
 }

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/ReviewMerchantDocumentCommandHandler.cs

@@ -20,27 +20,27 @@ public sealed class ReviewMerchantDocumentCommandHandler(
     ICurrentUserAccessor currentUserAccessor)
     : IRequestHandler<ReviewMerchantDocumentCommand, MerchantDocumentDto>
 {
-    private readonly IMerchantRepository _merchantRepository = merchantRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-    private readonly ICurrentUserAccessor _currentUserAccessor = currentUserAccessor;
-
     public async Task<MerchantDocumentDto> Handle(ReviewMerchantDocumentCommand request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 读取证照
-        var document = await _merchantRepository.FindDocumentByIdAsync(request.MerchantId, tenantId, request.DocumentId, cancellationToken)
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var document = await merchantRepository.FindDocumentByIdAsync(request.MerchantId, tenantId, request.DocumentId, cancellationToken)
                        ?? throw new BusinessException(ErrorCodes.NotFound, "证照不存在");
 
+        // 2. 若状态无变化且备注相同，直接返回
         var targetStatus = request.Approve ? MerchantDocumentStatus.Approved : MerchantDocumentStatus.Rejected;
         if (document.Status == targetStatus && document.Remarks == request.Remarks)
         {
             return MerchantMapping.ToDto(document);
         }
 
+        // 3. 更新状态
         document.Status = targetStatus;
         document.Remarks = request.Remarks;
 
-        await _merchantRepository.UpdateDocumentAsync(document, cancellationToken);
+        // 4. 持久化与审计
-        await _merchantRepository.AddAuditLogAsync(new MerchantAuditLog
+        await merchantRepository.UpdateDocumentAsync(document, cancellationToken);
+        await merchantRepository.AddAuditLogAsync(new MerchantAuditLog
         {
             TenantId = tenantId,
             MerchantId = document.MerchantId,
@@ -50,20 +50,21 @@ public sealed class ReviewMerchantDocumentCommandHandler(
             OperatorId = ResolveOperatorId(),
             OperatorName = ResolveOperatorName()
         }, cancellationToken);
-        await _merchantRepository.SaveChangesAsync(cancellationToken);
+        await merchantRepository.SaveChangesAsync(cancellationToken);
 
+        // 5. 返回 DTO
         return MerchantMapping.ToDto(document);
     }
 
     private long? ResolveOperatorId()
     {
-        var id = _currentUserAccessor.UserId;
+        var id = currentUserAccessor.UserId;
         return id == 0 ? null : id;
     }
 
     private string ResolveOperatorName()
     {
-        var id = _currentUserAccessor.UserId;
+        var id = currentUserAccessor.UserId;
         return id == 0 ? "system" : $"user:{id}";
     }
 }

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/SearchMerchantsQueryHandler.cs

@@ -15,21 +15,21 @@ public sealed class SearchMerchantsQueryHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<SearchMerchantsQuery, PagedResult<MerchantDto>>
 {
-    private readonly IMerchantRepository _merchantRepository = merchantRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     /// <inheritdoc />
     public async Task<PagedResult<MerchantDto>> Handle(SearchMerchantsQuery request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取租户并查询商户
-        var merchants = await _merchantRepository.SearchAsync(tenantId, request.Status, cancellationToken);
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var merchants = await merchantRepository.SearchAsync(tenantId, request.Status, cancellationToken);
 
+        // 2. 排序与分页
         var sorted = ApplySorting(merchants, request.SortBy, request.SortDescending);
         var paged = sorted
             .Skip((request.Page - 1) * request.PageSize)
             .Take(request.PageSize)
             .ToList();
 
+        // 3. 映射 DTO
         var items = paged.Select(merchant => new MerchantDto
         {
             Id = merchant.Id,
@@ -45,6 +45,7 @@ public sealed class SearchMerchantsQueryHandler(
             CreatedAt = merchant.CreatedAt
         }).ToList();
 
+        // 4. 返回分页结果
         return new PagedResult<MerchantDto>(items, request.Page, request.PageSize, merchants.Count);
     }
 

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/UpdateMerchantCommandHandler.cs

@@ -16,16 +16,12 @@ public sealed class UpdateMerchantCommandHandler(
     ILogger<UpdateMerchantCommandHandler> logger)
     : IRequestHandler<UpdateMerchantCommand, MerchantDto?>
 {
-    private readonly IMerchantRepository _merchantRepository = merchantRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-    private readonly ILogger<UpdateMerchantCommandHandler> _logger = logger;
-
     /// <inheritdoc />
     public async Task<MerchantDto?> Handle(UpdateMerchantCommand request, CancellationToken cancellationToken)
     {
         // 1. 读取现有商户
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        var tenantId = tenantProvider.GetCurrentTenantId();
-        var existing = await _merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken);
+        var existing = await merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken);
         if (existing == null)
         {
             return null;
@@ -41,9 +37,9 @@ public sealed class UpdateMerchantCommandHandler(
         existing.Status = request.Status;
 
         // 3. 持久化
-        await _merchantRepository.UpdateMerchantAsync(existing, cancellationToken);
+        await merchantRepository.UpdateMerchantAsync(existing, cancellationToken);
-        await _merchantRepository.SaveChangesAsync(cancellationToken);
+        await merchantRepository.SaveChangesAsync(cancellationToken);
-        _logger.LogInformation("更新商户 {MerchantId} - {BrandName}", existing.Id, existing.BrandName);
+        logger.LogInformation("更新商户 {MerchantId} - {BrandName}", existing.Id, existing.BrandName);
 
         // 4. 返回 DTO
         return MapToDto(existing);

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/UpdateMerchantContractStatusCommandHandler.cs

@@ -20,16 +20,14 @@ public sealed class UpdateMerchantContractStatusCommandHandler(
     ICurrentUserAccessor currentUserAccessor)
     : IRequestHandler<UpdateMerchantContractStatusCommand, MerchantContractDto>
 {
-    private readonly IMerchantRepository _merchantRepository = merchantRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-    private readonly ICurrentUserAccessor _currentUserAccessor = currentUserAccessor;
-
     public async Task<MerchantContractDto> Handle(UpdateMerchantContractStatusCommand request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 查询合同
-        var contract = await _merchantRepository.FindContractByIdAsync(request.MerchantId, tenantId, request.ContractId, cancellationToken)
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var contract = await merchantRepository.FindContractByIdAsync(request.MerchantId, tenantId, request.ContractId, cancellationToken)
                        ?? throw new BusinessException(ErrorCodes.NotFound, "合同不存在");
 
+        // 2. 更新状态
         if (request.Status == ContractStatus.Active)
         {
             contract.Status = ContractStatus.Active;
@@ -46,8 +44,9 @@ public sealed class UpdateMerchantContractStatusCommandHandler(
             contract.Status = request.Status;
         }
 
-        await _merchantRepository.UpdateContractAsync(contract, cancellationToken);
+        // 3. 持久化与审计
-        await _merchantRepository.AddAuditLogAsync(new MerchantAuditLog
+        await merchantRepository.UpdateContractAsync(contract, cancellationToken);
+        await merchantRepository.AddAuditLogAsync(new MerchantAuditLog
         {
             TenantId = tenantId,
             MerchantId = contract.MerchantId,
@@ -58,19 +57,21 @@ public sealed class UpdateMerchantContractStatusCommandHandler(
             OperatorName = ResolveOperatorName()
         }, cancellationToken);
 
-        await _merchantRepository.SaveChangesAsync(cancellationToken);
+        await merchantRepository.SaveChangesAsync(cancellationToken);
+
+        // 4. 返回 DTO
         return MerchantMapping.ToDto(contract);
     }
 
     private long? ResolveOperatorId()
     {
-        var id = _currentUserAccessor.UserId;
+        var id = currentUserAccessor.UserId;
         return id == 0 ? null : id;
     }
 
     private string ResolveOperatorName()
     {
-        var id = _currentUserAccessor.UserId;
+        var id = currentUserAccessor.UserId;
         return id == 0 ? "system" : $"user:{id}";
     }
 }

src/Application/TakeoutSaaS.Application/App/Orders/Handlers/CreateOrderCommandHandler.cs

@@ -17,17 +17,13 @@ public sealed class CreateOrderCommandHandler(
     ILogger<CreateOrderCommandHandler> logger)
     : IRequestHandler<CreateOrderCommand, OrderDto>
 {
-    private readonly IOrderRepository _orderRepository = orderRepository;
-    private readonly IIdGenerator _idGenerator = idGenerator;
-    private readonly ILogger<CreateOrderCommandHandler> _logger = logger;
-
     /// <inheritdoc />
     public async Task<OrderDto> Handle(CreateOrderCommand request, CancellationToken cancellationToken)
     {
         // 1. 构建订单
         var order = new Order
         {
-            Id = _idGenerator.NextId(),
+            Id = idGenerator.NextId(),
             OrderNo = request.OrderNo.Trim(),
             StoreId = request.StoreId,
             Channel = request.Channel,
@@ -77,15 +73,17 @@ public sealed class CreateOrderCommandHandler(
         }
 
         // 4. 持久化
-        await _orderRepository.AddOrderAsync(order, cancellationToken);
+        await orderRepository.AddOrderAsync(order, cancellationToken);
         if (items.Count > 0)
         {
-            await _orderRepository.AddItemsAsync(items, cancellationToken);
+            await orderRepository.AddItemsAsync(items, cancellationToken);
         }
-        await _orderRepository.SaveChangesAsync(cancellationToken);
+        await orderRepository.SaveChangesAsync(cancellationToken);
-        _logger.LogInformation("创建订单 {OrderNo} ({OrderId})", order.OrderNo, order.Id);
 
-        // 5. 返回 DTO
+        // 5. 记录日志
+        logger.LogInformation("创建订单 {OrderNo} ({OrderId})", order.OrderNo, order.Id);
+
+        // 6. 返回 DTO
         return MapToDto(order, items, [], []);
     }
 

src/Application/TakeoutSaaS.Application/App/Orders/Handlers/DeleteOrderCommandHandler.cs

@@ -15,26 +15,25 @@ public sealed class DeleteOrderCommandHandler(
     ILogger<DeleteOrderCommandHandler> logger)
     : IRequestHandler<DeleteOrderCommand, bool>
 {
-    private readonly IOrderRepository _orderRepository = orderRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-    private readonly ILogger<DeleteOrderCommandHandler> _logger = logger;
-
     /// <inheritdoc />
     public async Task<bool> Handle(DeleteOrderCommand request, CancellationToken cancellationToken)
     {
         // 1. 校验存在性
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        var tenantId = tenantProvider.GetCurrentTenantId();
-        var existing = await _orderRepository.FindByIdAsync(request.OrderId, tenantId, cancellationToken);
+        var existing = await orderRepository.FindByIdAsync(request.OrderId, tenantId, cancellationToken);
         if (existing == null)
         {
             return false;
         }
 
         // 2. 删除
-        await _orderRepository.DeleteOrderAsync(request.OrderId, tenantId, cancellationToken);
+        await orderRepository.DeleteOrderAsync(request.OrderId, tenantId, cancellationToken);
-        await _orderRepository.SaveChangesAsync(cancellationToken);
+        await orderRepository.SaveChangesAsync(cancellationToken);
-        _logger.LogInformation("删除订单 {OrderId}", request.OrderId);
 
+        // 3. 记录日志
+        logger.LogInformation("删除订单 {OrderId}", request.OrderId);
+
+        // 4. 返回执行结果
         return true;
     }
 }

src/Application/TakeoutSaaS.Application/App/Orders/Handlers/GetOrderByIdQueryHandler.cs

@@ -15,23 +15,25 @@ public sealed class GetOrderByIdQueryHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<GetOrderByIdQuery, OrderDto?>
 {
-    private readonly IOrderRepository _orderRepository = orderRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     /// <inheritdoc />
     public async Task<OrderDto?> Handle(GetOrderByIdQuery request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取当前租户
-        var order = await _orderRepository.FindByIdAsync(request.OrderId, tenantId, cancellationToken);
+        var tenantId = tenantProvider.GetCurrentTenantId();
+
+        // 2. 查询订单主体
+        var order = await orderRepository.FindByIdAsync(request.OrderId, tenantId, cancellationToken);
         if (order == null)
         {
             return null;
         }
 
-        var items = await _orderRepository.GetItemsAsync(order.Id, tenantId, cancellationToken);
+        // 3. 查询关联明细
-        var histories = await _orderRepository.GetStatusHistoryAsync(order.Id, tenantId, cancellationToken);
+        var items = await orderRepository.GetItemsAsync(order.Id, tenantId, cancellationToken);
-        var refunds = await _orderRepository.GetRefundsAsync(order.Id, tenantId, cancellationToken);
+        var histories = await orderRepository.GetStatusHistoryAsync(order.Id, tenantId, cancellationToken);
+        var refunds = await orderRepository.GetRefundsAsync(order.Id, tenantId, cancellationToken);
 
+        // 4. 映射并返回
         return MapToDto(order, items, histories, refunds);
     }
 

src/Application/TakeoutSaaS.Application/App/Orders/Handlers/SearchOrdersQueryHandler.cs

@@ -15,20 +15,20 @@ public sealed class SearchOrdersQueryHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<SearchOrdersQuery, PagedResult<OrderDto>>
 {
-    private readonly IOrderRepository _orderRepository = orderRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     /// <inheritdoc />
     public async Task<PagedResult<OrderDto>> Handle(SearchOrdersQuery request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取当前租户并查询订单
-        var orders = await _orderRepository.SearchAsync(tenantId, request.Status, request.PaymentStatus, cancellationToken);
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var orders = await orderRepository.SearchAsync(tenantId, request.Status, request.PaymentStatus, cancellationToken);
 
+        // 2. 可选过滤：门店
         if (request.StoreId.HasValue)
         {
             orders = orders.Where(x => x.StoreId == request.StoreId.Value).ToList();
         }
 
+        // 3. 可选过滤：订单号模糊
         if (!string.IsNullOrWhiteSpace(request.OrderNo))
         {
             var orderNo = request.OrderNo.Trim();
@@ -37,12 +37,14 @@ public sealed class SearchOrdersQueryHandler(
                 .ToList();
         }
 
+        // 4. 排序与分页
         var sorted = ApplySorting(orders, request.SortBy, request.SortDescending);
         var paged = sorted
             .Skip((request.Page - 1) * request.PageSize)
             .Take(request.PageSize)
             .ToList();
 
+        // 5. 映射 DTO
         var items = paged.Select(order => new OrderDto
         {
             Id = order.Id,
@@ -70,6 +72,7 @@ public sealed class SearchOrdersQueryHandler(
             CreatedAt = order.CreatedAt
         }).ToList();
 
+        // 6. 返回分页结果
         return new PagedResult<OrderDto>(items, request.Page, request.PageSize, orders.Count);
     }
 

src/Application/TakeoutSaaS.Application/App/Orders/Handlers/UpdateOrderCommandHandler.cs

@@ -17,16 +17,12 @@ public sealed class UpdateOrderCommandHandler(
     ILogger<UpdateOrderCommandHandler> logger)
     : IRequestHandler<UpdateOrderCommand, OrderDto?>
 {
-    private readonly IOrderRepository _orderRepository = orderRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-    private readonly ILogger<UpdateOrderCommandHandler> _logger = logger;
-
     /// <inheritdoc />
     public async Task<OrderDto?> Handle(UpdateOrderCommand request, CancellationToken cancellationToken)
     {
         // 1. 读取订单
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        var tenantId = tenantProvider.GetCurrentTenantId();
-        var existing = await _orderRepository.FindByIdAsync(request.OrderId, tenantId, cancellationToken);
+        var existing = await orderRepository.FindByIdAsync(request.OrderId, tenantId, cancellationToken);
         if (existing == null)
         {
             return null;
@@ -55,14 +51,16 @@ public sealed class UpdateOrderCommandHandler(
         existing.Remark = request.Remark?.Trim();
 
         // 3. 持久化
-        await _orderRepository.UpdateOrderAsync(existing, cancellationToken);
+        await orderRepository.UpdateOrderAsync(existing, cancellationToken);
-        await _orderRepository.SaveChangesAsync(cancellationToken);
+        await orderRepository.SaveChangesAsync(cancellationToken);
-        _logger.LogInformation("更新订单 {OrderNo} ({OrderId})", existing.OrderNo, existing.Id);
 
-        // 4. 读取关联数据并返回
+        // 4. 记录更新日志
-        var items = await _orderRepository.GetItemsAsync(existing.Id, tenantId, cancellationToken);
+        logger.LogInformation("更新订单 {OrderNo} ({OrderId})", existing.OrderNo, existing.Id);
-        var histories = await _orderRepository.GetStatusHistoryAsync(existing.Id, tenantId, cancellationToken);
+
-        var refunds = await _orderRepository.GetRefundsAsync(existing.Id, tenantId, cancellationToken);
+        // 5. 读取关联数据并返回
+        var items = await orderRepository.GetItemsAsync(existing.Id, tenantId, cancellationToken);
+        var histories = await orderRepository.GetStatusHistoryAsync(existing.Id, tenantId, cancellationToken);
+        var refunds = await orderRepository.GetRefundsAsync(existing.Id, tenantId, cancellationToken);
 
         return MapToDto(existing, items, histories, refunds);
     }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/ChangeTenantSubscriptionPlanCommandHandler.cs

@@ -18,20 +18,19 @@ public sealed class ChangeTenantSubscriptionPlanCommandHandler(
     IIdGenerator idGenerator)
     : IRequestHandler<ChangeTenantSubscriptionPlanCommand, TenantSubscriptionDto>
 {
-    private readonly ITenantRepository _tenantRepository = tenantRepository;
-    private readonly IIdGenerator _idGenerator = idGenerator;
-
     /// <inheritdoc />
     public async Task<TenantSubscriptionDto> Handle(ChangeTenantSubscriptionPlanCommand request, CancellationToken cancellationToken)
     {
-        _ = await _tenantRepository.FindByIdAsync(request.TenantId, cancellationToken)
+        // 1. 校验租户与订阅存在性
+        _ = await tenantRepository.FindByIdAsync(request.TenantId, cancellationToken)
             ?? throw new BusinessException(ErrorCodes.NotFound, "租户不存在");
 
-        var subscription = await _tenantRepository.FindSubscriptionByIdAsync(request.TenantId, request.TenantSubscriptionId, cancellationToken)
+        var subscription = await tenantRepository.FindSubscriptionByIdAsync(request.TenantId, request.TenantSubscriptionId, cancellationToken)
             ?? throw new BusinessException(ErrorCodes.NotFound, "订阅不存在");
 
         var previousPackage = subscription.TenantPackageId;
 
+        // 2. 根据立即生效或排期设置目标套餐
         if (request.Immediate)
         {
             subscription.TenantPackageId = request.TargetPackageId;
@@ -42,10 +41,11 @@ public sealed class ChangeTenantSubscriptionPlanCommandHandler(
             subscription.ScheduledPackageId = request.TargetPackageId;
         }
 
-        await _tenantRepository.UpdateSubscriptionAsync(subscription, cancellationToken);
+        // 3. 更新订阅并记录变更历史
-        await _tenantRepository.AddSubscriptionHistoryAsync(new TenantSubscriptionHistory
+        await tenantRepository.UpdateSubscriptionAsync(subscription, cancellationToken);
+        await tenantRepository.AddSubscriptionHistoryAsync(new TenantSubscriptionHistory
         {
-            Id = _idGenerator.NextId(),
+            Id = idGenerator.NextId(),
             TenantId = subscription.TenantId,
             TenantSubscriptionId = subscription.Id,
             FromPackageId = previousPackage,
@@ -56,7 +56,8 @@ public sealed class ChangeTenantSubscriptionPlanCommandHandler(
             Notes = request.Notes
         }, cancellationToken);
 
-        await _tenantRepository.AddAuditLogAsync(new TenantAuditLog
+        // 4. 记录审计日志
+        await tenantRepository.AddAuditLogAsync(new TenantAuditLog
         {
             TenantId = subscription.TenantId,
             Action = TenantAuditAction.SubscriptionPlanChanged,
@@ -66,7 +67,8 @@ public sealed class ChangeTenantSubscriptionPlanCommandHandler(
             CurrentStatus = null
         }, cancellationToken);
 
-        await _tenantRepository.SaveChangesAsync(cancellationToken);
+        // 5. 保存并返回 DTO
+        await tenantRepository.SaveChangesAsync(cancellationToken);
 
         return subscription.ToSubscriptionDto()
                ?? throw new BusinessException(ErrorCodes.InternalServerError, "订阅更新失败");

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/CheckTenantQuotaCommandHandler.cs

@@ -24,18 +24,20 @@ public sealed class CheckTenantQuotaCommandHandler(
     /// <inheritdoc />
     public async Task<QuotaCheckResultDto> Handle(CheckTenantQuotaCommand request, CancellationToken cancellationToken)
     {
+        // 1. 校验请求参数
         if (request.Delta <= 0)
         {
             throw new BusinessException(ErrorCodes.BadRequest, "配额消耗量必须大于 0");
         }
 
+        // 2. 校验租户上下文
         var currentTenantId = tenantProvider.GetCurrentTenantId();
         if (currentTenantId == 0 || currentTenantId != request.TenantId)
         {
             throw new BusinessException(ErrorCodes.Forbidden, "租户上下文不匹配，请在请求头 X-Tenant-Id 指定目标租户");
         }
 
-        // 1. 获取租户与当前订阅。
+        // 3. 获取租户与当前订阅
         _ = await tenantRepository.FindByIdAsync(request.TenantId, cancellationToken)
             ?? throw new BusinessException(ErrorCodes.NotFound, "租户不存在");
 
@@ -50,7 +52,7 @@ public sealed class CheckTenantQuotaCommandHandler(
 
         var limit = ResolveLimit(package, request.QuotaType);
 
-        // 2. 加载配额使用记录并计算。
+        // 4. 加载配额使用记录并计算
         var usage = await quotaUsageRepository.FindAsync(request.TenantId, request.QuotaType, cancellationToken)
                     ?? new TenantQuotaUsage
                     {
@@ -69,12 +71,14 @@ public sealed class CheckTenantQuotaCommandHandler(
             throw new BusinessException(ErrorCodes.Conflict, $"{request.QuotaType} 配额不足");
         }
 
+        // 5. 更新使用并保存
         usage.LimitValue = limit ?? usage.LimitValue;
         usage.UsedValue = usedAfter;
         usage.ResetCycle ??= ResolveResetCycle(request.QuotaType);
 
         await PersistUsageAsync(usage, quotaUsageRepository, cancellationToken);
 
+        // 6. 返回结果
         return new QuotaCheckResultDto
         {
             QuotaType = request.QuotaType,

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/CreateTenantAnnouncementCommandHandler.cs

@@ -16,11 +16,13 @@ public sealed class CreateTenantAnnouncementCommandHandler(ITenantAnnouncementRe
 {
     public async Task<TenantAnnouncementDto> Handle(CreateTenantAnnouncementCommand request, CancellationToken cancellationToken)
     {
+        // 1. 校验标题与内容
         if (string.IsNullOrWhiteSpace(request.Title) || string.IsNullOrWhiteSpace(request.Content))
         {
             throw new BusinessException(ErrorCodes.BadRequest, "公告标题和内容不能为空");
         }
 
+        // 2. 构建公告实体
         var announcement = new TenantAnnouncement
         {
             TenantId = request.TenantId,
@@ -33,6 +35,7 @@ public sealed class CreateTenantAnnouncementCommandHandler(ITenantAnnouncementRe
             IsActive = request.IsActive
         };
 
+        // 3. 持久化并返回 DTO
         await announcementRepository.AddAsync(announcement, cancellationToken);
         await announcementRepository.SaveChangesAsync(cancellationToken);
 

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/CreateTenantBillingCommandHandler.cs

@@ -16,11 +16,13 @@ public sealed class CreateTenantBillingCommandHandler(ITenantBillingRepository b
 {
     public async Task<TenantBillingDto> Handle(CreateTenantBillingCommand request, CancellationToken cancellationToken)
     {
+        // 1. 校验账单编号
         if (string.IsNullOrWhiteSpace(request.StatementNo))
         {
             throw new BusinessException(ErrorCodes.BadRequest, "账单编号不能为空");
         }
 
+        // 2. 构建账单实体
         var bill = new TenantBillingStatement
         {
             TenantId = request.TenantId,
@@ -34,9 +36,11 @@ public sealed class CreateTenantBillingCommandHandler(ITenantBillingRepository b
             LineItemsJson = request.LineItemsJson
         };
 
+        // 3. 持久化账单
         await billingRepository.AddAsync(bill, cancellationToken);
         await billingRepository.SaveChangesAsync(cancellationToken);
 
+        // 4. 返回 DTO
         return bill.ToDto();
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/CreateTenantPackageCommandHandler.cs

@@ -17,11 +17,13 @@ public sealed class CreateTenantPackageCommandHandler(ITenantPackageRepository p
     /// <inheritdoc />
     public async Task<TenantPackageDto> Handle(CreateTenantPackageCommand request, CancellationToken cancellationToken)
     {
+        // 1. 校验套餐名称
         if (string.IsNullOrWhiteSpace(request.Name))
         {
             throw new BusinessException(ErrorCodes.BadRequest, "套餐名称不能为空");
         }
 
+        // 2. 构建套餐实体
         var package = new TenantPackage
         {
             Name = request.Name.Trim(),
@@ -38,6 +40,7 @@ public sealed class CreateTenantPackageCommandHandler(ITenantPackageRepository p
             IsActive = request.IsActive
         };
 
+        // 3. 持久化并返回
         await packageRepository.AddAsync(package, cancellationToken);
         await packageRepository.SaveChangesAsync(cancellationToken);
 

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/CreateTenantSubscriptionCommandHandler.cs

@@ -18,28 +18,28 @@ public sealed class CreateTenantSubscriptionCommandHandler(
     IIdGenerator idGenerator)
     : IRequestHandler<CreateTenantSubscriptionCommand, TenantSubscriptionDto>
 {
-    private readonly ITenantRepository _tenantRepository = tenantRepository;
-    private readonly IIdGenerator _idGenerator = idGenerator;
-
     /// <inheritdoc />
     public async Task<TenantSubscriptionDto> Handle(CreateTenantSubscriptionCommand request, CancellationToken cancellationToken)
     {
+        // 1. 校验订阅时长
         if (request.DurationMonths <= 0)
         {
             throw new BusinessException(ErrorCodes.BadRequest, "订阅时长必须大于 0");
         }
 
-        var tenant = await _tenantRepository.FindByIdAsync(request.TenantId, cancellationToken)
+        // 2. 获取租户与当前订阅
+        var tenant = await tenantRepository.FindByIdAsync(request.TenantId, cancellationToken)
             ?? throw new BusinessException(ErrorCodes.NotFound, "租户不存在");
 
-        var current = await _tenantRepository.GetActiveSubscriptionAsync(request.TenantId, cancellationToken);
+        var current = await tenantRepository.GetActiveSubscriptionAsync(request.TenantId, cancellationToken);
         var from = current?.EffectiveTo ?? tenant.EffectiveTo ?? DateTime.UtcNow;
         var effectiveFrom = from > DateTime.UtcNow ? from : DateTime.UtcNow;
         var effectiveTo = effectiveFrom.AddMonths(request.DurationMonths);
 
+        // 3. 创建订阅实体
         var subscription = new TenantSubscription
         {
-            Id = _idGenerator.NextId(),
+            Id = idGenerator.NextId(),
             TenantId = tenant.Id,
             TenantPackageId = request.TenantPackageId,
             EffectiveFrom = effectiveFrom,
@@ -50,10 +50,11 @@ public sealed class CreateTenantSubscriptionCommandHandler(
             Notes = request.Notes
         };
 
-        await _tenantRepository.AddSubscriptionAsync(subscription, cancellationToken);
+        // 4. 记录订阅与历史
-        await _tenantRepository.AddSubscriptionHistoryAsync(new TenantSubscriptionHistory
+        await tenantRepository.AddSubscriptionAsync(subscription, cancellationToken);
+        await tenantRepository.AddSubscriptionHistoryAsync(new TenantSubscriptionHistory
         {
-            Id = _idGenerator.NextId(),
+            Id = idGenerator.NextId(),
             TenantId = tenant.Id,
             TenantSubscriptionId = subscription.Id,
             FromPackageId = current?.TenantPackageId ?? request.TenantPackageId,
@@ -66,7 +67,8 @@ public sealed class CreateTenantSubscriptionCommandHandler(
             Notes = request.Notes
         }, cancellationToken);
 
-        await _tenantRepository.AddAuditLogAsync(new TenantAuditLog
+        // 5. 记录审计
+        await tenantRepository.AddAuditLogAsync(new TenantAuditLog
         {
             TenantId = tenant.Id,
             Action = TenantAuditAction.SubscriptionUpdated,
@@ -74,8 +76,10 @@ public sealed class CreateTenantSubscriptionCommandHandler(
             Description = $"套餐 {request.TenantPackageId} 时长 {request.DurationMonths} 月"
         }, cancellationToken);
 
-        await _tenantRepository.SaveChangesAsync(cancellationToken);
+        // 6. 保存变更
+        await tenantRepository.SaveChangesAsync(cancellationToken);
 
+        // 7. 返回 DTO
         return subscription.ToSubscriptionDto()
                ?? throw new BusinessException(ErrorCodes.InternalServerError, "订阅生成失败");
     }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/DeleteTenantAnnouncementCommandHandler.cs

@@ -12,8 +12,11 @@ public sealed class DeleteTenantAnnouncementCommandHandler(ITenantAnnouncementRe
 {
     public async Task<bool> Handle(DeleteTenantAnnouncementCommand request, CancellationToken cancellationToken)
     {
+        // 1. 删除公告
         await announcementRepository.DeleteAsync(request.TenantId, request.AnnouncementId, cancellationToken);
         await announcementRepository.SaveChangesAsync(cancellationToken);
+
+        // 2. 返回执行结果
         return true;
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/DeleteTenantPackageCommandHandler.cs

@@ -13,8 +13,11 @@ public sealed class DeleteTenantPackageCommandHandler(ITenantPackageRepository p
     /// <inheritdoc />
     public async Task<bool> Handle(DeleteTenantPackageCommand request, CancellationToken cancellationToken)
     {
+        // 1. 删除套餐
         await packageRepository.DeleteAsync(request.TenantPackageId, cancellationToken);
         await packageRepository.SaveChangesAsync(cancellationToken);
+
+        // 2. 返回执行结果
         return true;
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/GetTenantAnnouncementQueryHandler.cs

@@ -17,12 +17,14 @@ public sealed class GetTenantAnnouncementQueryHandler(
 {
     public async Task<TenantAnnouncementDto?> Handle(GetTenantAnnouncementQuery request, CancellationToken cancellationToken)
     {
+        // 1. 查询公告主体
         var announcement = await announcementRepository.FindByIdAsync(request.TenantId, request.AnnouncementId, cancellationToken);
         if (announcement == null)
         {
             return null;
         }
 
+        // 2. 优先查用户级已读
         var userId = currentUserAccessor?.UserId ?? 0;
         var reads = await readRepository.GetByAnnouncementAsync(
             request.TenantId,
@@ -37,6 +39,7 @@ public sealed class GetTenantAnnouncementQueryHandler(
             reads = tenantReads;
         }
 
+        // 3. 返回 DTO 并附带已读状态
         var readRecord = reads.FirstOrDefault();
         return announcement.ToDto(readRecord != null, readRecord?.ReadAt);
     }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/GetTenantAuditLogsQueryHandler.cs

@@ -13,20 +13,21 @@ namespace TakeoutSaaS.Application.App.Tenants.Handlers;
 public sealed class GetTenantAuditLogsQueryHandler(ITenantRepository tenantRepository)
     : IRequestHandler<GetTenantAuditLogsQuery, PagedResult<TenantAuditLogDto>>
 {
-    private readonly ITenantRepository _tenantRepository = tenantRepository;
-
     /// <inheritdoc />
     public async Task<PagedResult<TenantAuditLogDto>> Handle(GetTenantAuditLogsQuery request, CancellationToken cancellationToken)
     {
-        var logs = await _tenantRepository.GetAuditLogsAsync(request.TenantId, cancellationToken);
+        // 1. 查询审核日志
+        var logs = await tenantRepository.GetAuditLogsAsync(request.TenantId, cancellationToken);
         var total = logs.Count;
 
+        // 2. 分页映射
         var paged = logs
             .Skip((request.Page - 1) * request.PageSize)
             .Take(request.PageSize)
             .Select(TenantMapping.ToDto)
             .ToList();
 
+        // 3. 返回分页结果
         return new PagedResult<TenantAuditLogDto>(paged, request.Page, request.PageSize, total);
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/GetTenantBillQueryHandler.cs

@@ -13,7 +13,10 @@ public sealed class GetTenantBillQueryHandler(ITenantBillingRepository billingRe
 {
     public async Task<TenantBillingDto?> Handle(GetTenantBillQuery request, CancellationToken cancellationToken)
     {
+        // 1. 查询账单
         var bill = await billingRepository.FindByIdAsync(request.TenantId, request.BillingId, cancellationToken);
+
+        // 2. 返回 DTO 或 null
         return bill?.ToDto();
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/GetTenantByIdQueryHandler.cs

@@ -13,17 +13,18 @@ namespace TakeoutSaaS.Application.App.Tenants.Handlers;
 public sealed class GetTenantByIdQueryHandler(ITenantRepository tenantRepository)
     : IRequestHandler<GetTenantByIdQuery, TenantDetailDto>
 {
-    private readonly ITenantRepository _tenantRepository = tenantRepository;
-
     /// <inheritdoc />
     public async Task<TenantDetailDto> Handle(GetTenantByIdQuery request, CancellationToken cancellationToken)
     {
-        var tenant = await _tenantRepository.FindByIdAsync(request.TenantId, cancellationToken)
+        // 1. 查询租户
+        var tenant = await tenantRepository.FindByIdAsync(request.TenantId, cancellationToken)
             ?? throw new BusinessException(ErrorCodes.NotFound, "租户不存在");
 
-        var subscription = await _tenantRepository.GetActiveSubscriptionAsync(request.TenantId, cancellationToken);
+        // 2. 查询订阅与认证
-        var verification = await _tenantRepository.GetVerificationProfileAsync(request.TenantId, cancellationToken);
+        var subscription = await tenantRepository.GetActiveSubscriptionAsync(request.TenantId, cancellationToken);
+        var verification = await tenantRepository.GetVerificationProfileAsync(request.TenantId, cancellationToken);
 
+        // 3. 组装返回
         return new TenantDetailDto
         {
             Tenant = TenantMapping.ToDto(tenant, subscription, verification),

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/GetTenantPackageByIdQueryHandler.cs

@@ -14,7 +14,10 @@ public sealed class GetTenantPackageByIdQueryHandler(ITenantPackageRepository pa
     /// <inheritdoc />
     public async Task<TenantPackageDto?> Handle(GetTenantPackageByIdQuery request, CancellationToken cancellationToken)
     {
+        // 1. 查询套餐
         var package = await packageRepository.FindByIdAsync(request.TenantPackageId, cancellationToken);
+
+        // 2. 返回 DTO 或 null
         return package?.ToDto();
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/MarkTenantAnnouncementReadCommandHandler.cs

@@ -20,15 +20,18 @@ public sealed class MarkTenantAnnouncementReadCommandHandler(
 {
     public async Task<TenantAnnouncementDto?> Handle(MarkTenantAnnouncementReadCommand request, CancellationToken cancellationToken)
     {
+        // 1. 查询公告
         var announcement = await announcementRepository.FindByIdAsync(request.TenantId, request.AnnouncementId, cancellationToken);
         if (announcement == null)
         {
             return null;
         }
 
+        // 2. 确定用户标识
         var userId = currentUserAccessor?.UserId ?? 0;
         var existing = await readRepository.FindAsync(request.TenantId, request.AnnouncementId, userId == 0 ? null : userId, cancellationToken);
 
+        // 3. 如未读则写入已读记录
         if (existing == null)
         {
             var record = new TenantAnnouncementRead
@@ -44,6 +47,7 @@ public sealed class MarkTenantAnnouncementReadCommandHandler(
             existing = record;
         }
 
+        // 4. 返回带已读时间的公告 DTO
         return announcement.ToDto(true, existing.ReadAt);
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/MarkTenantBillingPaidCommandHandler.cs

@@ -14,19 +14,23 @@ public sealed class MarkTenantBillingPaidCommandHandler(ITenantBillingRepository
 {
     public async Task<TenantBillingDto?> Handle(MarkTenantBillingPaidCommand request, CancellationToken cancellationToken)
     {
+        // 1. 查询账单
         var bill = await billingRepository.FindByIdAsync(request.TenantId, request.BillingId, cancellationToken);
         if (bill == null)
         {
             return null;
         }
 
+        // 2. 更新支付状态
         bill.AmountPaid = request.AmountPaid;
         bill.Status = TenantBillingStatus.Paid;
         bill.DueDate = bill.DueDate;
 
+        // 3. 持久化变更
         await billingRepository.UpdateAsync(bill, cancellationToken);
         await billingRepository.SaveChangesAsync(cancellationToken);
 
+        // 4. 返回 DTO
         return bill.ToDto();
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/MarkTenantNotificationReadCommandHandler.cs

@@ -13,12 +13,14 @@ public sealed class MarkTenantNotificationReadCommandHandler(ITenantNotification
 {
     public async Task<TenantNotificationDto?> Handle(MarkTenantNotificationReadCommand request, CancellationToken cancellationToken)
     {
+        // 1. 查询通知
         var notification = await notificationRepository.FindByIdAsync(request.TenantId, request.NotificationId, cancellationToken);
         if (notification == null)
         {
             return null;
         }
 
+        // 2. 若未读则标记已读
         if (notification.ReadAt == null)
         {
             notification.ReadAt = DateTime.UtcNow;
@@ -26,6 +28,7 @@ public sealed class MarkTenantNotificationReadCommandHandler(ITenantNotification
             await notificationRepository.SaveChangesAsync(cancellationToken);
         }
 
+        // 3. 返回 DTO
         return notification.ToDto();
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/RegisterTenantCommandHandler.cs

@@ -20,30 +20,30 @@ public sealed class RegisterTenantCommandHandler(
     ILogger<RegisterTenantCommandHandler> logger)
     : IRequestHandler<RegisterTenantCommand, TenantDto>
 {
-    private readonly ITenantRepository _tenantRepository = tenantRepository;
-    private readonly IIdGenerator _idGenerator = idGenerator;
-    private readonly ILogger<RegisterTenantCommandHandler> _logger = logger;
-
     /// <inheritdoc />
     public async Task<TenantDto> Handle(RegisterTenantCommand request, CancellationToken cancellationToken)
     {
+        // 1. 校验订阅时长
         if (request.DurationMonths <= 0)
         {
             throw new BusinessException(ErrorCodes.BadRequest, "订阅时长必须大于 0");
         }
 
-        if (await _tenantRepository.ExistsByCodeAsync(request.Code, cancellationToken))
+        // 2. 检查租户编码唯一性
+        if (await tenantRepository.ExistsByCodeAsync(request.Code, cancellationToken))
         {
             throw new BusinessException(ErrorCodes.Conflict, $"租户编码 {request.Code} 已存在");
         }
 
+        // 3. 计算生效时间
         var now = DateTime.UtcNow;
         var effectiveFrom = request.EffectiveFrom ?? now;
         var effectiveTo = effectiveFrom.AddMonths(request.DurationMonths);
 
+        // 4. 构建租户实体
         var tenant = new Tenant
         {
-            Id = _idGenerator.NextId(),
+            Id = idGenerator.NextId(),
             Code = request.Code.Trim(),
             Name = request.Name,
             ShortName = request.ShortName,
@@ -56,9 +56,10 @@ public sealed class RegisterTenantCommandHandler(
             EffectiveTo = effectiveTo
         };
 
+        // 5. 构建订阅实体
         var subscription = new TenantSubscription
         {
-            Id = _idGenerator.NextId(),
+            Id = idGenerator.NextId(),
             TenantId = tenant.Id,
             TenantPackageId = request.TenantPackageId,
             EffectiveFrom = effectiveFrom,
@@ -69,9 +70,10 @@ public sealed class RegisterTenantCommandHandler(
             Notes = "Init subscription"
         };
 
-        await _tenantRepository.AddTenantAsync(tenant, cancellationToken);
+        // 6. 持久化租户、订阅和审计日志
-        await _tenantRepository.AddSubscriptionAsync(subscription, cancellationToken);
+        await tenantRepository.AddTenantAsync(tenant, cancellationToken);
-        await _tenantRepository.AddAuditLogAsync(new TenantAuditLog
+        await tenantRepository.AddSubscriptionAsync(subscription, cancellationToken);
+        await tenantRepository.AddAuditLogAsync(new TenantAuditLog
         {
             TenantId = tenant.Id,
             Action = TenantAuditAction.RegistrationSubmitted,
@@ -79,10 +81,12 @@ public sealed class RegisterTenantCommandHandler(
             Description = $"提交套餐 {request.TenantPackageId}，时长 {request.DurationMonths} 月"
         }, cancellationToken);
 
-        await _tenantRepository.SaveChangesAsync(cancellationToken);
+        await tenantRepository.SaveChangesAsync(cancellationToken);
 
-        _logger.LogInformation("已注册租户 {TenantCode}", tenant.Code);
+        // 7. 记录日志
+        logger.LogInformation("已注册租户 {TenantCode}", tenant.Code);
 
+        // 8. 返回 DTO
         return TenantMapping.ToDto(tenant, subscription, null);
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/ReviewTenantCommandHandler.cs

@@ -17,31 +17,32 @@ public sealed class ReviewTenantCommandHandler(
     ICurrentUserAccessor currentUserAccessor)
     : IRequestHandler<ReviewTenantCommand, TenantDto>
 {
-    private readonly ITenantRepository _tenantRepository = tenantRepository;
-    private readonly ICurrentUserAccessor _currentUserAccessor = currentUserAccessor;
-
     /// <inheritdoc />
     public async Task<TenantDto> Handle(ReviewTenantCommand request, CancellationToken cancellationToken)
     {
-        var tenant = await _tenantRepository.FindByIdAsync(request.TenantId, cancellationToken)
+        // 1. 获取租户与认证资料
+        var tenant = await tenantRepository.FindByIdAsync(request.TenantId, cancellationToken)
             ?? throw new BusinessException(ErrorCodes.NotFound, "租户不存在");
 
-        var verification = await _tenantRepository.GetVerificationProfileAsync(request.TenantId, cancellationToken)
+        var verification = await tenantRepository.GetVerificationProfileAsync(request.TenantId, cancellationToken)
             ?? throw new BusinessException(ErrorCodes.BadRequest, "请先提交实名认证资料");
 
-        var subscription = await _tenantRepository.GetActiveSubscriptionAsync(request.TenantId, cancellationToken);
+        var subscription = await tenantRepository.GetActiveSubscriptionAsync(request.TenantId, cancellationToken);
 
-        var actorName = _currentUserAccessor.IsAuthenticated
+        // 2. 记录审核人
-            ? $"user:{_currentUserAccessor.UserId}"
+        var actorName = currentUserAccessor.IsAuthenticated
+            ? $"user:{currentUserAccessor.UserId}"
             : "system";
 
+        // 3. 写入审核信息
         verification.ReviewedAt = DateTime.UtcNow;
-        verification.ReviewedBy = _currentUserAccessor.UserId == 0 ? null : _currentUserAccessor.UserId;
+        verification.ReviewedBy = currentUserAccessor.UserId == 0 ? null : currentUserAccessor.UserId;
         verification.ReviewedByName = actorName;
         verification.ReviewRemarks = request.Reason;
 
         var previousStatus = tenant.Status;
 
+        // 4. 更新租户与订阅状态
         if (request.Approve)
         {
             verification.Status = TenantVerificationStatus.Approved;
@@ -61,26 +62,29 @@ public sealed class ReviewTenantCommandHandler(
             }
         }
 
-        await _tenantRepository.UpdateTenantAsync(tenant, cancellationToken);
+        // 5. 持久化租户与认证资料
-        await _tenantRepository.UpsertVerificationProfileAsync(verification, cancellationToken);
+        await tenantRepository.UpdateTenantAsync(tenant, cancellationToken);
+        await tenantRepository.UpsertVerificationProfileAsync(verification, cancellationToken);
         if (subscription != null)
         {
-            await _tenantRepository.UpdateSubscriptionAsync(subscription, cancellationToken);
+            await tenantRepository.UpdateSubscriptionAsync(subscription, cancellationToken);
         }
 
-        await _tenantRepository.AddAuditLogAsync(new Domain.Tenants.Entities.TenantAuditLog
+        // 6. 记录审核日志
+        await tenantRepository.AddAuditLogAsync(new Domain.Tenants.Entities.TenantAuditLog
         {
             TenantId = tenant.Id,
             Action = request.Approve ? TenantAuditAction.VerificationApproved : TenantAuditAction.VerificationRejected,
             Title = request.Approve ? "审核通过" : "审核驳回",
             Description = request.Reason,
-            OperatorId = _currentUserAccessor.UserId == 0 ? null : _currentUserAccessor.UserId,
+            OperatorId = currentUserAccessor.UserId == 0 ? null : currentUserAccessor.UserId,
             OperatorName = actorName,
             PreviousStatus = previousStatus,
             CurrentStatus = tenant.Status
         }, cancellationToken);
 
-        await _tenantRepository.SaveChangesAsync(cancellationToken);
+        // 7. 保存并返回 DTO
+        await tenantRepository.SaveChangesAsync(cancellationToken);
 
         return TenantMapping.ToDto(tenant, subscription, verification);
     }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/SearchTenantAnnouncementsQueryHandler.cs

@@ -20,22 +20,27 @@ public sealed class SearchTenantAnnouncementsQueryHandler(
 {
     public async Task<PagedResult<TenantAnnouncementDto>> Handle(SearchTenantAnnouncementsQuery request, CancellationToken cancellationToken)
     {
+        // 1. 过滤有效期条件
         var effectiveAt = request.OnlyEffective == true ? DateTime.UtcNow : (DateTime?)null;
         var announcements = await announcementRepository.SearchAsync(request.TenantId, request.AnnouncementType, request.IsActive, effectiveAt, cancellationToken);
 
+        // 2. 排序（优先级/时间）
         var ordered = announcements
             .OrderByDescending(x => x.Priority)
             .ThenByDescending(x => x.CreatedAt)
             .ToList();
 
+        // 3. 计算分页参数
         var page = request.Page <= 0 ? 1 : request.Page;
         var size = request.PageSize <= 0 ? 20 : request.PageSize;
 
+        // 4. 分页
         var pageItems = ordered
             .Skip((page - 1) * size)
             .Take(size)
             .ToList();
 
+        // 5. 构建已读映射
         var announcementIds = pageItems.Select(x => x.Id).ToArray();
         var userId = currentUserAccessor?.UserId ?? 0;
 
@@ -65,6 +70,7 @@ public sealed class SearchTenantAnnouncementsQueryHandler(
             }
         }
 
+        // 6. 映射 DTO 并带上已读状态
         var items = pageItems
             .Select(a =>
             {
@@ -73,6 +79,7 @@ public sealed class SearchTenantAnnouncementsQueryHandler(
             })
             .ToList();
 
+        // 7. 返回分页结果
         return new PagedResult<TenantAnnouncementDto>(items, page, size, ordered.Count);
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/SearchTenantBillsQueryHandler.cs

@@ -15,13 +15,16 @@ public sealed class SearchTenantBillsQueryHandler(ITenantBillingRepository billi
 {
     public async Task<PagedResult<TenantBillingDto>> Handle(SearchTenantBillsQuery request, CancellationToken cancellationToken)
     {
+        // 1. 查询账单
         var bills = await billingRepository.SearchAsync(request.TenantId, request.Status, request.From, request.To, cancellationToken);
 
+        // 2. 排序与分页
         var ordered = bills.OrderByDescending(x => x.PeriodEnd).ToList();
         var page = request.Page <= 0 ? 1 : request.Page;
         var size = request.PageSize <= 0 ? 20 : request.PageSize;
         var items = ordered.Skip((page - 1) * size).Take(size).Select(x => x.ToDto()).ToList();
 
+        // 3. 返回分页结果
         return new PagedResult<TenantBillingDto>(items, page, size, ordered.Count);
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/SearchTenantNotificationsQueryHandler.cs

@@ -15,6 +15,7 @@ public sealed class SearchTenantNotificationsQueryHandler(ITenantNotificationRep
 {
     public async Task<PagedResult<TenantNotificationDto>> Handle(SearchTenantNotificationsQuery request, CancellationToken cancellationToken)
     {
+        // 1. 查询通知
         var notifications = await notificationRepository.SearchAsync(
             request.TenantId,
             request.Severity,
@@ -23,11 +24,13 @@ public sealed class SearchTenantNotificationsQueryHandler(ITenantNotificationRep
             null,
             cancellationToken);
 
+        // 2. 排序与分页
         var ordered = notifications.OrderByDescending(x => x.SentAt).ToList();
         var page = request.Page <= 0 ? 1 : request.Page;
         var size = request.PageSize <= 0 ? 20 : request.PageSize;
         var items = ordered.Skip((page - 1) * size).Take(size).Select(x => x.ToDto()).ToList();
 
+        // 3. 返回分页结果
         return new PagedResult<TenantNotificationDto>(items, page, size, ordered.Count);
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/SearchTenantPackagesQueryHandler.cs

@@ -16,8 +16,10 @@ public sealed class SearchTenantPackagesQueryHandler(ITenantPackageRepository pa
     /// <inheritdoc />
     public async Task<PagedResult<TenantPackageDto>> Handle(SearchTenantPackagesQuery request, CancellationToken cancellationToken)
     {
+        // 1. 查询套餐
         var packages = await packageRepository.SearchAsync(request.Keyword, request.IsActive, cancellationToken);
 
+        // 2. 排序与分页
         var ordered = packages.OrderByDescending(x => x.CreatedAt).ToList();
         var pageIndex = request.Page <= 0 ? 1 : request.Page;
         var size = request.PageSize <= 0 ? 20 : request.PageSize;
@@ -28,6 +30,7 @@ public sealed class SearchTenantPackagesQueryHandler(ITenantPackageRepository pa
             .Select(x => x.ToDto())
             .ToList();
 
+        // 3. 返回分页结果
         return new PagedResult<TenantPackageDto>(pagedItems, pageIndex, size, ordered.Count);
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/SearchTenantsQueryHandler.cs

@@ -13,27 +13,29 @@ namespace TakeoutSaaS.Application.App.Tenants.Handlers;
 public sealed class SearchTenantsQueryHandler(ITenantRepository tenantRepository)
     : IRequestHandler<SearchTenantsQuery, PagedResult<TenantDto>>
 {
-    private readonly ITenantRepository _tenantRepository = tenantRepository;
-
     /// <inheritdoc />
     public async Task<PagedResult<TenantDto>> Handle(SearchTenantsQuery request, CancellationToken cancellationToken)
     {
-        var tenants = await _tenantRepository.SearchAsync(request.Status, request.Keyword, cancellationToken);
+        // 1. 查询租户列表
+        var tenants = await tenantRepository.SearchAsync(request.Status, request.Keyword, cancellationToken);
         var total = tenants.Count;
 
+        // 2. 分页
         var paged = tenants
             .Skip((request.Page - 1) * request.PageSize)
             .Take(request.PageSize)
             .ToList();
 
+        // 3. 映射 DTO（带订阅与认证）
         var result = new List<TenantDto>(paged.Count);
         foreach (var tenant in paged)
         {
-            var subscription = await _tenantRepository.GetActiveSubscriptionAsync(tenant.Id, cancellationToken);
+            var subscription = await tenantRepository.GetActiveSubscriptionAsync(tenant.Id, cancellationToken);
-            var verification = await _tenantRepository.GetVerificationProfileAsync(tenant.Id, cancellationToken);
+            var verification = await tenantRepository.GetVerificationProfileAsync(tenant.Id, cancellationToken);
             result.Add(TenantMapping.ToDto(tenant, subscription, verification));
         }
 
+        // 4. 返回分页结果
         return new PagedResult<TenantDto>(result, request.Page, request.PageSize, total);
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/SubmitTenantVerificationCommandHandler.cs

@@ -18,18 +18,18 @@ public sealed class SubmitTenantVerificationCommandHandler(
     IIdGenerator idGenerator)
     : IRequestHandler<SubmitTenantVerificationCommand, TenantVerificationDto>
 {
-    private readonly ITenantRepository _tenantRepository = tenantRepository;
-    private readonly IIdGenerator _idGenerator = idGenerator;
-
     /// <inheritdoc />
     public async Task<TenantVerificationDto> Handle(SubmitTenantVerificationCommand request, CancellationToken cancellationToken)
     {
-        var tenant = await _tenantRepository.FindByIdAsync(request.TenantId, cancellationToken)
+        // 1. 获取租户
+        var tenant = await tenantRepository.FindByIdAsync(request.TenantId, cancellationToken)
             ?? throw new BusinessException(ErrorCodes.NotFound, "租户不存在");
 
-        var profile = await _tenantRepository.GetVerificationProfileAsync(request.TenantId, cancellationToken)
+        // 2. 读取或初始化实名资料
-                       ?? new TenantVerificationProfile { Id = _idGenerator.NextId(), TenantId = tenant.Id };
+        var profile = await tenantRepository.GetVerificationProfileAsync(request.TenantId, cancellationToken)
+                       ?? new TenantVerificationProfile { Id = idGenerator.NextId(), TenantId = tenant.Id };
 
+        // 3. 填充资料
         profile.BusinessLicenseNumber = request.BusinessLicenseNumber;
         profile.BusinessLicenseUrl = request.BusinessLicenseUrl;
         profile.LegalPersonName = request.LegalPersonName;
@@ -47,16 +47,18 @@ public sealed class SubmitTenantVerificationCommandHandler(
         profile.ReviewedBy = null;
         profile.ReviewedByName = null;
 
-        await _tenantRepository.UpsertVerificationProfileAsync(profile, cancellationToken);
+        // 4. 保存资料并记录审计
-        await _tenantRepository.AddAuditLogAsync(new TenantAuditLog
+        await tenantRepository.UpsertVerificationProfileAsync(profile, cancellationToken);
+        await tenantRepository.AddAuditLogAsync(new TenantAuditLog
         {
             TenantId = tenant.Id,
             Action = TenantAuditAction.VerificationSubmitted,
             Title = "提交实名认证资料",
             Description = request.BusinessLicenseNumber
         }, cancellationToken);
-        await _tenantRepository.SaveChangesAsync(cancellationToken);
+        await tenantRepository.SaveChangesAsync(cancellationToken);
 
+        // 5. 返回 DTO
         return profile.ToVerificationDto()
                ?? throw new BusinessException(ErrorCodes.InternalServerError, "实名资料保存失败");
     }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/UpdateTenantAnnouncementCommandHandler.cs

@@ -15,17 +15,20 @@ public sealed class UpdateTenantAnnouncementCommandHandler(ITenantAnnouncementRe
 {
     public async Task<TenantAnnouncementDto?> Handle(UpdateTenantAnnouncementCommand request, CancellationToken cancellationToken)
     {
+        // 1. 校验输入
         if (string.IsNullOrWhiteSpace(request.Title) || string.IsNullOrWhiteSpace(request.Content))
         {
             throw new BusinessException(ErrorCodes.BadRequest, "公告标题和内容不能为空");
         }
 
+        // 2. 查询公告
         var announcement = await announcementRepository.FindByIdAsync(request.TenantId, request.AnnouncementId, cancellationToken);
         if (announcement == null)
         {
             return null;
         }
 
+        // 3. 更新字段
         announcement.Title = request.Title.Trim();
         announcement.Content = request.Content;
         announcement.AnnouncementType = request.AnnouncementType;
@@ -34,9 +37,11 @@ public sealed class UpdateTenantAnnouncementCommandHandler(ITenantAnnouncementRe
         announcement.EffectiveTo = request.EffectiveTo;
         announcement.IsActive = request.IsActive;
 
+        // 4. 持久化
         await announcementRepository.UpdateAsync(announcement, cancellationToken);
         await announcementRepository.SaveChangesAsync(cancellationToken);
 
+        // 5. 返回 DTO
         return announcement.ToDto(false, null);
     }
 }

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/UpdateTenantPackageCommandHandler.cs

@@ -16,17 +16,20 @@ public sealed class UpdateTenantPackageCommandHandler(ITenantPackageRepository p
     /// <inheritdoc />
     public async Task<TenantPackageDto?> Handle(UpdateTenantPackageCommand request, CancellationToken cancellationToken)
     {
+        // 1. 校验必填项
         if (string.IsNullOrWhiteSpace(request.Name))
         {
             throw new BusinessException(ErrorCodes.BadRequest, "套餐名称不能为空");
         }
 
+        // 2. 查询套餐
         var package = await packageRepository.FindByIdAsync(request.TenantPackageId, cancellationToken);
         if (package == null)
         {
             return null;
         }
 
+        // 3. 更新字段
         package.Name = request.Name.Trim();
         package.Description = request.Description;
         package.PackageType = request.PackageType;
@@ -40,6 +43,7 @@ public sealed class UpdateTenantPackageCommandHandler(ITenantPackageRepository p
         package.FeaturePoliciesJson = request.FeaturePoliciesJson;
         package.IsActive = request.IsActive;
 
+        // 4. 持久化并返回
         await packageRepository.UpdateAsync(package, cancellationToken);
         await packageRepository.SaveChangesAsync(cancellationToken);
 

src/Application/TakeoutSaaS.Application/Dictionary/Services/DictionaryAppService.cs

@@ -21,18 +21,20 @@ public sealed class DictionaryAppService(
     ITenantProvider tenantProvider,
     ILogger<DictionaryAppService> logger) : IDictionaryAppService
 {
-
     public async Task<DictionaryGroupDto> CreateGroupAsync(CreateDictionaryGroupRequest request, CancellationToken cancellationToken = default)
     {
+        // 1. 规范化编码并确定租户
         var normalizedCode = NormalizeCode(request.Code);
         var targetTenant = ResolveTargetTenant(request.Scope);
 
+        // 2. 校验编码唯一
         var existing = await repository.FindGroupByCodeAsync(normalizedCode, cancellationToken);
         if (existing != null)
         {
             throw new BusinessException(ErrorCodes.Conflict, $"字典分组编码 {normalizedCode} 已存在");
         }
 
+        // 3. 构建分组实体
         var group = new DictionaryGroup
         {
             Id = 0,
@@ -44,6 +46,7 @@ public sealed class DictionaryAppService(
             IsEnabled = true
         };
 
+        // 4. 持久化并返回
         await repository.AddGroupAsync(group, cancellationToken);
         await repository.SaveChangesAsync(cancellationToken);
         logger.LogInformation("创建字典分组：{Code}({Scope})", group.Code, group.Scope);
@@ -52,13 +55,16 @@ public sealed class DictionaryAppService(
 
     public async Task<DictionaryGroupDto> UpdateGroupAsync(long groupId, UpdateDictionaryGroupRequest request, CancellationToken cancellationToken = default)
     {
+        // 1. 读取分组并校验权限
         var group = await RequireGroupAsync(groupId, cancellationToken);
         EnsureScopePermission(group.Scope);
 
+        // 2. 更新字段
         group.Name = request.Name.Trim();
         group.Description = request.Description?.Trim();
         group.IsEnabled = request.IsEnabled;
 
+        // 3. 持久化并失效缓存
         await repository.SaveChangesAsync(cancellationToken);
         await InvalidateCacheAsync(group, cancellationToken);
         logger.LogInformation("更新字典分组：{GroupId}", group.Id);
@@ -67,9 +73,11 @@ public sealed class DictionaryAppService(
 
     public async Task DeleteGroupAsync(long groupId, CancellationToken cancellationToken = default)
     {
+        // 1. 读取分组并校验权限
         var group = await RequireGroupAsync(groupId, cancellationToken);
         EnsureScopePermission(group.Scope);
 
+        // 2. 删除并失效缓存
         await repository.RemoveGroupAsync(group, cancellationToken);
         await repository.SaveChangesAsync(cancellationToken);
         await InvalidateCacheAsync(group, cancellationToken);
@@ -78,10 +86,12 @@ public sealed class DictionaryAppService(
 
     public async Task<IReadOnlyList<DictionaryGroupDto>> SearchGroupsAsync(DictionaryGroupQuery request, CancellationToken cancellationToken = default)
     {
+        // 1. 确定查询范围并校验权限
         var tenantId = tenantProvider.GetCurrentTenantId();
         var scope = ResolveScopeForQuery(request.Scope, tenantId);
         EnsureScopePermission(scope);
 
+        // 2. 查询分组及可选项
         var groups = await repository.SearchGroupsAsync(scope, cancellationToken);
         var includeItems = request.IncludeItems;
         var result = new List<DictionaryGroupDto>(groups.Count);
@@ -91,6 +101,7 @@ public sealed class DictionaryAppService(
             IReadOnlyList<DictionaryItemDto> items = Array.Empty<DictionaryItemDto>();
             if (includeItems)
             {
+                // 查询分组下字典项
                 var itemEntities = await repository.GetItemsByGroupIdAsync(group.Id, cancellationToken);
                 items = itemEntities.Select(MapItem).ToList();
             }
@@ -103,9 +114,11 @@ public sealed class DictionaryAppService(
 
     public async Task<DictionaryItemDto> CreateItemAsync(CreateDictionaryItemRequest request, CancellationToken cancellationToken = default)
     {
+        // 1. 校验分组与权限
         var group = await RequireGroupAsync(request.GroupId, cancellationToken);
         EnsureScopePermission(group.Scope);
 
+        // 2. 构建字典项
         var item = new DictionaryItem
         {
             Id = 0,
@@ -119,6 +132,7 @@ public sealed class DictionaryAppService(
             IsEnabled = request.IsEnabled
         };
 
+        // 3. 持久化并失效缓存
         await repository.AddItemAsync(item, cancellationToken);
         await repository.SaveChangesAsync(cancellationToken);
         await InvalidateCacheAsync(group, cancellationToken);
@@ -128,16 +142,19 @@ public sealed class DictionaryAppService(
 
     public async Task<DictionaryItemDto> UpdateItemAsync(long itemId, UpdateDictionaryItemRequest request, CancellationToken cancellationToken = default)
     {
+        // 1. 读取字典项与分组并校验权限
         var item = await RequireItemAsync(itemId, cancellationToken);
         var group = await RequireGroupAsync(item.GroupId, cancellationToken);
         EnsureScopePermission(group.Scope);
 
+        // 2. 更新字段
         item.Value = request.Value.Trim();
         item.Description = request.Description?.Trim();
         item.SortOrder = request.SortOrder;
         item.IsDefault = request.IsDefault;
         item.IsEnabled = request.IsEnabled;
 
+        // 3. 持久化并失效缓存
         await repository.SaveChangesAsync(cancellationToken);
         await InvalidateCacheAsync(group, cancellationToken);
         logger.LogInformation("更新字典项：{ItemId}", item.Id);
@@ -146,10 +163,12 @@ public sealed class DictionaryAppService(
 
     public async Task DeleteItemAsync(long itemId, CancellationToken cancellationToken = default)
     {
+        // 1. 读取字典项与分组并校验权限
         var item = await RequireItemAsync(itemId, cancellationToken);
         var group = await RequireGroupAsync(item.GroupId, cancellationToken);
         EnsureScopePermission(group.Scope);
 
+        // 2. 删除并失效缓存
         await repository.RemoveItemAsync(item, cancellationToken);
         await repository.SaveChangesAsync(cancellationToken);
         await InvalidateCacheAsync(group, cancellationToken);
@@ -158,6 +177,7 @@ public sealed class DictionaryAppService(
 
     public async Task<IReadOnlyDictionary<string, IReadOnlyList<DictionaryItemDto>>> GetCachedItemsAsync(DictionaryBatchQueryRequest request, CancellationToken cancellationToken = default)
     {
+        // 1. 规范化编码
         var normalizedCodes = request.Codes
             .Where(code => !string.IsNullOrWhiteSpace(code))
             .Select(NormalizeCode)
@@ -169,6 +189,7 @@ public sealed class DictionaryAppService(
             return new Dictionary<string, IReadOnlyList<DictionaryItemDto>>(StringComparer.OrdinalIgnoreCase);
         }
 
+        // 2. 按租户合并系统与业务字典
         var tenantId = tenantProvider.GetCurrentTenantId();
         var result = new Dictionary<string, IReadOnlyList<DictionaryItemDto>>(StringComparer.OrdinalIgnoreCase);
 
@@ -190,6 +211,7 @@ public sealed class DictionaryAppService(
 
     private async Task<DictionaryGroup> RequireGroupAsync(long groupId, CancellationToken cancellationToken)
     {
+        // 1. 读取分组，找不到抛异常
         var group = await repository.FindGroupByIdAsync(groupId, cancellationToken);
         if (group == null)
         {
@@ -201,6 +223,7 @@ public sealed class DictionaryAppService(
 
     private async Task<DictionaryItem> RequireItemAsync(long itemId, CancellationToken cancellationToken)
     {
+        // 1. 读取字典项，找不到抛异常
         var item = await repository.FindItemByIdAsync(itemId, cancellationToken);
         if (item == null)
         {
@@ -269,12 +292,14 @@ public sealed class DictionaryAppService(
 
     private async Task<IReadOnlyList<DictionaryItemDto>> GetOrLoadCacheAsync(long tenantId, string code, CancellationToken cancellationToken)
     {
+        // 1. 先查缓存
         var cached = await cache.GetAsync(tenantId, code, cancellationToken);
         if (cached != null)
         {
             return cached;
         }
 
+        // 2. 从仓储加载并写入缓存
         var entities = await repository.GetItemsByCodesAsync(new[] { code }, tenantId, includeSystem: false, cancellationToken);
         var items = entities
             .Where(item => item.IsEnabled && (item.Group?.IsEnabled ?? true))

src/Application/TakeoutSaaS.Application/Identity/Handlers/AssignUserRolesCommandHandler.cs

@@ -15,9 +15,14 @@ public sealed class AssignUserRolesCommandHandler(
 {
     public async Task<bool> Handle(AssignUserRolesCommand request, CancellationToken cancellationToken)
     {
+        // 1. 获取租户上下文
         var tenantId = tenantProvider.GetCurrentTenantId();
+
+        // 2. 覆盖式绑定角色
         await userRoleRepository.ReplaceUserRolesAsync(tenantId, request.UserId, request.RoleIds, cancellationToken);
         await userRoleRepository.SaveChangesAsync(cancellationToken);
+
+        // 3. 返回执行结果
         return true;
     }
 }

src/Application/TakeoutSaaS.Application/Identity/Handlers/BindRolePermissionsCommandHandler.cs

@@ -15,9 +15,14 @@ public sealed class BindRolePermissionsCommandHandler(
 {
     public async Task<bool> Handle(BindRolePermissionsCommand request, CancellationToken cancellationToken)
     {
+        // 1. 获取租户上下文
         var tenantId = tenantProvider.GetCurrentTenantId();
+
+        // 2. 覆盖式绑定权限
         await rolePermissionRepository.ReplaceRolePermissionsAsync(tenantId, request.RoleId, request.PermissionIds, cancellationToken);
         await rolePermissionRepository.SaveChangesAsync(cancellationToken);
+
+        // 3. 返回执行结果
         return true;
     }
 }

src/Application/TakeoutSaaS.Application/Identity/Handlers/CopyRoleTemplateCommandHandler.cs

@@ -26,6 +26,7 @@ public sealed class CopyRoleTemplateCommandHandler(
     /// <inheritdoc />
     public async Task<RoleDto> Handle(CopyRoleTemplateCommand request, CancellationToken cancellationToken)
     {
+        // 1. 查询模板与模板权限
         var template = await roleTemplateRepository.FindByCodeAsync(request.TemplateCode, cancellationToken)
             ?? throw new BusinessException(ErrorCodes.NotFound, $"角色模板 {request.TemplateCode} 不存在");
 
@@ -36,6 +37,7 @@ public sealed class CopyRoleTemplateCommandHandler(
             .Distinct(StringComparer.OrdinalIgnoreCase)
             .ToArray();
 
+        // 2. 计算角色名称/编码与描述
         var tenantId = tenantProvider.GetCurrentTenantId();
         var roleCode = string.IsNullOrWhiteSpace(request.RoleCode) ? template.TemplateCode : request.RoleCode.Trim();
         var roleName = string.IsNullOrWhiteSpace(request.RoleName) ? template.Name : request.RoleName.Trim();
@@ -69,7 +71,7 @@ public sealed class CopyRoleTemplateCommandHandler(
             await roleRepository.UpdateAsync(role, cancellationToken);
         }
 
-        // 2. 确保模板权限全部存在，不存在则按模板定义创建。
+        // 3. 确保模板权限全部存在，不存在则按模板定义创建。
         var existingPermissions = await permissionRepository.GetByCodesAsync(tenantId, permissionCodes, cancellationToken);
         var permissionMap = existingPermissions.ToDictionary(x => x.Code, StringComparer.OrdinalIgnoreCase);
 
@@ -94,7 +96,7 @@ public sealed class CopyRoleTemplateCommandHandler(
 
         await roleRepository.SaveChangesAsync(cancellationToken);
 
-        // 3. 绑定缺失的权限，保留租户自定义的已有授权。
+        // 4. 绑定缺失的权限，保留租户自定义的已有授权。
         var rolePermissions = await rolePermissionRepository.GetByRoleIdsAsync(tenantId, new[] { role.Id }, cancellationToken);
         var existingPermissionIds = rolePermissions
             .Select(x => x.PermissionId)

src/Application/TakeoutSaaS.Application/Identity/Handlers/CreatePermissionCommandHandler.cs

@@ -17,7 +17,10 @@ public sealed class CreatePermissionCommandHandler(
 {
     public async Task<PermissionDto> Handle(CreatePermissionCommand request, CancellationToken cancellationToken)
     {
+        // 1. 获取租户上下文
         var tenantId = tenantProvider.GetCurrentTenantId();
+
+        // 2. 构建权限实体
         var permission = new Permission
         {
             TenantId = tenantId,
@@ -26,9 +29,11 @@ public sealed class CreatePermissionCommandHandler(
             Description = request.Description
         };
 
+        // 3. 持久化
         await permissionRepository.AddAsync(permission, cancellationToken);
         await permissionRepository.SaveChangesAsync(cancellationToken);
 
+        // 4. 返回 DTO
         return new PermissionDto
         {
             Id = permission.Id,

src/Application/TakeoutSaaS.Application/Identity/Handlers/CreateRoleCommandHandler.cs

@@ -17,7 +17,10 @@ public sealed class CreateRoleCommandHandler(
 {
     public async Task<RoleDto> Handle(CreateRoleCommand request, CancellationToken cancellationToken)
     {
+        // 1. 获取租户上下文
         var tenantId = tenantProvider.GetCurrentTenantId();
+
+        // 2. 构建角色实体
         var role = new Role
         {
             TenantId = tenantId,
@@ -26,9 +29,11 @@ public sealed class CreateRoleCommandHandler(
             Description = request.Description
         };
 
+        // 3. 持久化
         await roleRepository.AddAsync(role, cancellationToken);
         await roleRepository.SaveChangesAsync(cancellationToken);
 
+        // 4. 返回 DTO
         return new RoleDto
         {
             Id = role.Id,

src/Application/TakeoutSaaS.Application/Identity/Handlers/CreateRoleTemplateCommandHandler.cs

@@ -19,17 +19,20 @@ public sealed class CreateRoleTemplateCommandHandler(IRoleTemplateRepository rol
     /// <inheritdoc />
     public async Task<RoleTemplateDto> Handle(CreateRoleTemplateCommand request, CancellationToken cancellationToken)
     {
+        // 1. 校验必填
         if (string.IsNullOrWhiteSpace(request.TemplateCode) || string.IsNullOrWhiteSpace(request.Name))
         {
             throw new BusinessException(ErrorCodes.BadRequest, "模板编码与名称不能为空");
         }
 
+        // 2. 检查编码唯一
         var existing = await roleTemplateRepository.FindByCodeAsync(request.TemplateCode, cancellationToken);
         if (existing != null)
         {
             throw new BusinessException(ErrorCodes.Conflict, $"模板编码 {request.TemplateCode} 已存在");
         }
 
+        // 3. 构建模板实体
         var template = new RoleTemplate
         {
             TemplateCode = request.TemplateCode.Trim(),
@@ -38,12 +41,14 @@ public sealed class CreateRoleTemplateCommandHandler(IRoleTemplateRepository rol
             IsActive = request.IsActive
         };
 
+        // 4. 清洗权限编码
         var permissions = request.PermissionCodes
             .Where(code => !string.IsNullOrWhiteSpace(code))
             .Select(code => code.Trim())
             .Distinct(StringComparer.OrdinalIgnoreCase)
             .ToArray();
 
+        // 5. 持久化并返回 DTO
         await roleTemplateRepository.AddAsync(template, permissions, cancellationToken);
         await roleTemplateRepository.SaveChangesAsync(cancellationToken);
 

src/Application/TakeoutSaaS.Application/Identity/Handlers/DeletePermissionCommandHandler.cs

@@ -15,9 +15,14 @@ public sealed class DeletePermissionCommandHandler(
 {
     public async Task<bool> Handle(DeletePermissionCommand request, CancellationToken cancellationToken)
     {
+        // 1. 获取租户上下文
         var tenantId = tenantProvider.GetCurrentTenantId();
+
+        // 2. 删除权限
         await permissionRepository.DeleteAsync(request.PermissionId, tenantId, cancellationToken);
         await permissionRepository.SaveChangesAsync(cancellationToken);
+
+        // 3. 返回执行结果
         return true;
     }
 }

src/Application/TakeoutSaaS.Application/Identity/Handlers/DeleteRoleCommandHandler.cs

@@ -15,9 +15,14 @@ public sealed class DeleteRoleCommandHandler(
 {
     public async Task<bool> Handle(DeleteRoleCommand request, CancellationToken cancellationToken)
     {
+        // 1. 获取租户上下文
         var tenantId = tenantProvider.GetCurrentTenantId();
+
+        // 2. 删除角色
         await roleRepository.DeleteAsync(request.RoleId, tenantId, cancellationToken);
         await roleRepository.SaveChangesAsync(cancellationToken);
+
+        // 3. 返回执行结果
         return true;
     }
 }

src/Application/TakeoutSaaS.Application/Identity/Handlers/DeleteRoleTemplateCommandHandler.cs

@@ -12,14 +12,18 @@ public sealed class DeleteRoleTemplateCommandHandler(IRoleTemplateRepository rol
 {
     public async Task<bool> Handle(DeleteRoleTemplateCommand request, CancellationToken cancellationToken)
     {
+        // 1. 查询模板
         var template = await roleTemplateRepository.FindByCodeAsync(request.TemplateCode, cancellationToken);
         if (template == null)
         {
             return false;
         }
 
+        // 2. 删除并保存
         await roleTemplateRepository.DeleteAsync(template.Id, cancellationToken);
         await roleTemplateRepository.SaveChangesAsync(cancellationToken);
+
+        // 3. 返回执行结果
         return true;
     }
 }

src/Application/TakeoutSaaS.Application/Identity/Handlers/GetRoleTemplateQueryHandler.cs

@@ -15,14 +15,18 @@ public sealed class GetRoleTemplateQueryHandler(IRoleTemplateRepository roleTemp
     /// <inheritdoc />
     public async Task<RoleTemplateDto?> Handle(GetRoleTemplateQuery request, CancellationToken cancellationToken)
     {
+        // 1. 查询模板
         var template = await roleTemplateRepository.FindByCodeAsync(request.TemplateCode, cancellationToken);
         if (template == null)
         {
             return null;
         }
 
+        // 2. 查询模板权限
         var permissions = await roleTemplateRepository.GetPermissionsAsync(template.Id, cancellationToken);
         var codes = permissions.Select(x => x.PermissionCode).ToArray();
+
+        // 3. 返回 DTO
         return TemplateMapper.ToDto(template, codes);
     }
 }

src/Application/TakeoutSaaS.Application/Identity/Handlers/GetUserPermissionsQueryHandler.cs

@@ -20,26 +20,22 @@ public sealed class GetUserPermissionsQueryHandler(
     ITenantProvider tenantProvider)
     : IRequestHandler<GetUserPermissionsQuery, UserPermissionDto?>
 {
-    private readonly IIdentityUserRepository _identityUserRepository = identityUserRepository;
-    private readonly IUserRoleRepository _userRoleRepository = userRoleRepository;
-    private readonly IRoleRepository _roleRepository = roleRepository;
-    private readonly IPermissionRepository _permissionRepository = permissionRepository;
-    private readonly IRolePermissionRepository _rolePermissionRepository = rolePermissionRepository;
-    private readonly ITenantProvider _tenantProvider = tenantProvider;
-
     /// <inheritdoc />
     public async Task<UserPermissionDto?> Handle(GetUserPermissionsQuery request, CancellationToken cancellationToken)
     {
-        var tenantId = _tenantProvider.GetCurrentTenantId();
+        // 1. 获取租户并查询用户
-        var user = await _identityUserRepository.FindByIdAsync(request.UserId, cancellationToken);
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var user = await identityUserRepository.FindByIdAsync(request.UserId, cancellationToken);
         if (user == null || user.TenantId != tenantId)
         {
             return null;
         }
 
+        // 2. 解析角色与权限
         var roleCodes = await ResolveUserRolesAsync(tenantId, user.Id, cancellationToken);
         var permissionCodes = await ResolveUserPermissionsAsync(tenantId, user.Id, cancellationToken);
 
+        // 3. 返回用户权限概览
         return new UserPermissionDto
         {
             UserId = user.Id,
@@ -55,34 +51,39 @@ public sealed class GetUserPermissionsQueryHandler(
 
     private async Task<string[]> ResolveUserRolesAsync(long tenantId, long userId, CancellationToken cancellationToken)
     {
-        var relations = await _userRoleRepository.GetByUserIdAsync(tenantId, userId, cancellationToken);
+        // 1. 查询用户角色关系
+        var relations = await userRoleRepository.GetByUserIdAsync(tenantId, userId, cancellationToken);
         var roleIds = relations.Select(x => x.RoleId).Distinct().ToArray();
         if (roleIds.Length == 0)
         {
             return Array.Empty<string>();
         }
 
-        var roles = await _roleRepository.GetByIdsAsync(tenantId, roleIds, cancellationToken);
+        // 2. 查询角色编码
+        var roles = await roleRepository.GetByIdsAsync(tenantId, roleIds, cancellationToken);
         return roles.Select(x => x.Code).Distinct(StringComparer.OrdinalIgnoreCase).ToArray();
     }
 
     private async Task<string[]> ResolveUserPermissionsAsync(long tenantId, long userId, CancellationToken cancellationToken)
     {
-        var relations = await _userRoleRepository.GetByUserIdAsync(tenantId, userId, cancellationToken);
+        // 1. 查询用户角色关系
+        var relations = await userRoleRepository.GetByUserIdAsync(tenantId, userId, cancellationToken);
         var roleIds = relations.Select(x => x.RoleId).Distinct().ToArray();
         if (roleIds.Length == 0)
         {
             return Array.Empty<string>();
         }
 
-        var rolePermissions = await _rolePermissionRepository.GetByRoleIdsAsync(tenantId, roleIds, cancellationToken);
+        // 2. 查询角色-权限关系
+        var rolePermissions = await rolePermissionRepository.GetByRoleIdsAsync(tenantId, roleIds, cancellationToken);
         var permissionIds = rolePermissions.Select(x => x.PermissionId).Distinct().ToArray();
         if (permissionIds.Length == 0)
         {
             return Array.Empty<string>();
         }
 
-        var permissions = await _permissionRepository.GetByIdsAsync(tenantId, permissionIds, cancellationToken);
+        // 3. 查询权限编码
+        var permissions = await permissionRepository.GetByIdsAsync(tenantId, permissionIds, cancellationToken);
         return permissions.Select(x => x.Code).Distinct(StringComparer.OrdinalIgnoreCase).ToArray();
     }
 }

src/Application/TakeoutSaaS.Application/Identity/Handlers/ListRoleTemplatesQueryHandler.cs

@@ -16,9 +16,11 @@ public sealed class ListRoleTemplatesQueryHandler(IRoleTemplateRepository roleTe
     /// <inheritdoc />
     public async Task<IReadOnlyList<RoleTemplateDto>> Handle(ListRoleTemplatesQuery request, CancellationToken cancellationToken)
     {
+        // 1. 查询模板与权限映射
         var templates = await roleTemplateRepository.GetAllAsync(request.IsActive, cancellationToken);
         var permissionsMap = await roleTemplateRepository.GetPermissionsAsync(templates.Select(t => t.Id), cancellationToken);
 
+        // 2. 排序并映射 DTO
         var dtos = templates
             .OrderBy(template => template.TemplateCode, StringComparer.OrdinalIgnoreCase)
             .Select(template =>
@@ -30,6 +32,7 @@ public sealed class ListRoleTemplatesQueryHandler(IRoleTemplateRepository roleTe
             })
             .ToArray();
 
+        // 3. 返回结果
         return dtos;
     }
 }

src/Application/TakeoutSaaS.Application/Identity/Handlers/SearchPermissionsQueryHandler.cs

@@ -19,9 +19,11 @@ public sealed class SearchPermissionsQueryHandler(
 {
     public async Task<PagedResult<PermissionDto>> Handle(SearchPermissionsQuery request, CancellationToken cancellationToken)
     {
+        // 1. 获取租户上下文并查询权限
         var tenantId = tenantProvider.GetCurrentTenantId();
         var permissions = await permissionRepository.SearchAsync(tenantId, request.Keyword, cancellationToken);
 
+        // 2. 排序
         var sorted = request.SortBy?.ToLowerInvariant() switch
         {
             "name" => request.SortDescending
@@ -35,11 +37,13 @@ public sealed class SearchPermissionsQueryHandler(
                 : permissions.OrderBy(x => x.CreatedAt)
         };
 
+        // 3. 分页
         var paged = sorted
             .Skip((request.Page - 1) * request.PageSize)
             .Take(request.PageSize)
             .ToList();
 
+        // 4. 映射 DTO
         var items = paged.Select(permission => new PermissionDto
         {
             Id = permission.Id,
@@ -49,6 +53,7 @@ public sealed class SearchPermissionsQueryHandler(
             Description = permission.Description
         }).ToList();
 
+        // 5. 返回分页结果
         return new PagedResult<PermissionDto>(items, request.Page, request.PageSize, permissions.Count);
     }
 }

src/Application/TakeoutSaaS.Application/Identity/Handlers/SearchRolesQueryHandler.cs

@@ -19,9 +19,11 @@ public sealed class SearchRolesQueryHandler(
 {
     public async Task<PagedResult<RoleDto>> Handle(SearchRolesQuery request, CancellationToken cancellationToken)
     {
+        // 1. 获取租户上下文并查询角色
         var tenantId = tenantProvider.GetCurrentTenantId();
         var roles = await roleRepository.SearchAsync(tenantId, request.Keyword, cancellationToken);
 
+        // 2. 排序
         var sorted = request.SortBy?.ToLowerInvariant() switch
         {
             "name" => request.SortDescending
@@ -32,11 +34,13 @@ public sealed class SearchRolesQueryHandler(
                 : roles.OrderBy(x => x.CreatedAt)
         };
 
+        // 3. 分页
         var paged = sorted
             .Skip((request.Page - 1) * request.PageSize)
             .Take(request.PageSize)
             .ToList();
 
+        // 4. 映射 DTO
         var items = paged.Select(role => new RoleDto
         {
             Id = role.Id,
@@ -46,6 +50,7 @@ public sealed class SearchRolesQueryHandler(
             Description = role.Description
         }).ToList();
 
+        // 5. 返回分页结果
         return new PagedResult<RoleDto>(items, request.Page, request.PageSize, roles.Count);
     }
 }