feat: 扩展领域模型与配置

src/Domain/TakeoutSaaS.Domain/Deliveries/Entities/DeliveryEvent.cs

@@ -0,0 +1,35 @@
+using TakeoutSaaS.Domain.Deliveries.Enums;
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Deliveries.Entities;
+
+/// <summary>
+/// 配送状态事件流水。
+/// </summary>
+public sealed class DeliveryEvent : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 配送单标识。
+    /// </summary>
+    public Guid DeliveryOrderId { get; set; }
+
+    /// <summary>
+    /// 事件类型。
+    /// </summary>
+    public DeliveryEventType EventType { get; set; } = DeliveryEventType.Updated;
+
+    /// <summary>
+    /// 事件描述。
+    /// </summary>
+    public string Message { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 原始数据 JSON。
+    /// </summary>
+    public string? Payload { get; set; }
+
+    /// <summary>
+    /// 发生时间。
+    /// </summary>
+    public DateTime OccurredAt { get; set; } = DateTime.UtcNow;
+}