feat: migrate snowflake ids and refresh migrations

src/Domain/TakeoutSaaS.Domain/Identity/Entities/IdentityUser.cs

@@ -25,7 +25,7 @@ public sealed class IdentityUser : MultiTenantEntityBase
     /// <summary>
     /// 所属商户（平台管理员为空）。
     /// </summary>
-    public Guid? MerchantId { get; set; }
+    public long? MerchantId { get; set; }
 
     /// <summary>
     /// 角色集合。