feat：补齐商户版本号

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

@@ -1,5 +1,6 @@
 using MediatR;
 using Microsoft.Extensions.Logging;
+using System.Security.Cryptography;
 using TakeoutSaaS.Application.App.Merchants.Commands;
 using TakeoutSaaS.Application.App.Merchants.Dto;
 using TakeoutSaaS.Domain.Merchants.Entities;
@@ -26,6 +27,7 @@ public sealed class CreateMerchantCommandHandler(IMerchantRepository merchantRep
             ContactPhone = request.ContactPhone.Trim(),
             ContactEmail = request.ContactEmail?.Trim(),
             Status = request.Status,
+            RowVersion = RandomNumberGenerator.GetBytes(16),
             JoinedAt = DateTime.UtcNow
         };
 

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

@@ -1,4 +1,5 @@
 using MediatR;
+using System.Security.Cryptography;
 using TakeoutSaaS.Application.App.Tenants.Commands;
 using TakeoutSaaS.Application.App.Tenants.Dto;
 using TakeoutSaaS.Domain.Merchants.Entities;
@@ -130,7 +131,8 @@ public sealed class ReviewTenantCommandHandler(
                     JoinedAt = now,
                     LastReviewedAt = now,
                     LastReviewedBy = currentUserAccessor.UserId == 0 ? null : currentUserAccessor.UserId,
-                    IsFrozen = false
+                    IsFrozen = false,
+                    RowVersion = RandomNumberGenerator.GetBytes(16)
                 };
 
                 await merchantRepository.AddMerchantAsync(merchant, cancellationToken);