feat: 商户模块移除租户上下文依赖

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

@@ -2,7 +2,6 @@ using MediatR;
 using Microsoft.Extensions.Logging;
 using TakeoutSaaS.Application.App.Merchants.Commands;
 using TakeoutSaaS.Domain.Merchants.Repositories;
-using TakeoutSaaS.Shared.Abstractions.Tenancy;
 
 namespace TakeoutSaaS.Application.App.Merchants.Handlers;
 
@@ -11,23 +10,21 @@ namespace TakeoutSaaS.Application.App.Merchants.Handlers;
 /// </summary>
 public sealed class DeleteMerchantCommandHandler(
     IMerchantRepository merchantRepository,
-    ITenantProvider tenantProvider,
     ILogger<DeleteMerchantCommandHandler> logger)
     : IRequestHandler<DeleteMerchantCommand, bool>
 {
     /// <inheritdoc />
     public async Task<bool> Handle(DeleteMerchantCommand request, CancellationToken cancellationToken)
     {
-        // 1. 校验存在性
-        var tenantId = tenantProvider.GetCurrentTenantId();
-        var existing = await merchantRepository.FindByIdAsync(request.MerchantId, tenantId, cancellationToken);
+        // 1. 校验存在性（跨租户）
+        var existing = await merchantRepository.FindByIdAsync(request.MerchantId, cancellationToken);
         if (existing == null)
         {
             return false;
         }
 
-        // 2. 删除
-        await merchantRepository.DeleteMerchantAsync(request.MerchantId, tenantId, cancellationToken);
+        // 2. (空行后) 删除
+        await merchantRepository.DeleteMerchantAsync(request.MerchantId, existing.TenantId, cancellationToken);
         await merchantRepository.SaveChangesAsync(cancellationToken);
         logger.LogInformation("删除商户 {MerchantId}", request.MerchantId);