style: 命令不可变化与规范补充

src/Application/TakeoutSaaS.Application/App/Merchants/Commands/UpdateMerchantCommand.cs

@@ -7,45 +7,45 @@ namespace TakeoutSaaS.Application.App.Merchants.Commands;
 /// <summary>
 /// 更新商户命令。
 /// </summary>
-public sealed class UpdateMerchantCommand : IRequest<MerchantDto?>
+public sealed record UpdateMerchantCommand : IRequest<MerchantDto?>
 {
     /// <summary>
     /// 商户 ID。
     /// </summary>
-    public long MerchantId { get; set; }
+    public long MerchantId { get; init; }
 
     /// <summary>
     /// 品牌名称。
     /// </summary>
-    public string BrandName { get; set; } = string.Empty;
+    public string BrandName { get; init; } = string.Empty;
 
     /// <summary>
     /// 品牌简称。
     /// </summary>
-    public string? BrandAlias { get; set; }
+    public string? BrandAlias { get; init; }
 
     /// <summary>
     /// Logo 地址。
     /// </summary>
-    public string? LogoUrl { get; set; }
+    public string? LogoUrl { get; init; }
 
     /// <summary>
     /// 品类。
     /// </summary>
-    public string? Category { get; set; }
+    public string? Category { get; init; }
 
     /// <summary>
     /// 联系电话。
     /// </summary>
-    public string ContactPhone { get; set; } = string.Empty;
+    public string ContactPhone { get; init; } = string.Empty;
 
     /// <summary>
     /// 联系邮箱。
     /// </summary>
-    public string? ContactEmail { get; set; }
+    public string? ContactEmail { get; init; }
 
     /// <summary>
     /// 入驻状态。
     /// </summary>
-    public MerchantStatus Status { get; set; }
+    public MerchantStatus Status { get; init; }
 }