docs: 补齐核心枚举注释

src/Domain/TakeoutSaaS.Domain/Payments/Enums/PaymentMethod.cs

@@ -5,10 +5,33 @@ namespace TakeoutSaaS.Domain.Payments.Enums;
 /// </summary>
 public enum PaymentMethod
 {
+    /// <summary>
+    /// 未知或待确定方式。
+    /// </summary>
     Unknown = 0,
+
+    /// <summary>
+    /// 微信支付。
+    /// </summary>
     WeChatPay = 1,
+
+    /// <summary>
+    /// 支付宝。
+    /// </summary>
     Alipay = 2,
+
+    /// <summary>
+    /// 现金。
+    /// </summary>
     Cash = 3,
+
+    /// <summary>
+    /// 刷卡（POS）。
+    /// </summary>
     Card = 4,
+
+    /// <summary>
+    /// 余额或储值账户。
+    /// </summary>
     Balance = 5
 }

src/Domain/TakeoutSaaS.Domain/Payments/Enums/PaymentStatus.cs

@@ -5,9 +5,28 @@ namespace TakeoutSaaS.Domain.Payments.Enums;
 /// </summary>
 public enum PaymentStatus
 {
+    /// <summary>
+    /// 未支付。
+    /// </summary>
     Unpaid = 0,
+
+    /// <summary>
+    /// 支付处理中。
+    /// </summary>
     Paying = 1,
+
+    /// <summary>
+    /// 支付成功。
+    /// </summary>
     Paid = 2,
+
+    /// <summary>
+    /// 支付失败。
+    /// </summary>
     Failed = 3,
+
+    /// <summary>
+    /// 已退款。
+    /// </summary>
     Refunded = 4
 }