feat: 扩展领域模型与配置

src/Domain/TakeoutSaaS.Domain/CustomerService/Entities/TicketComment.cs

@@ -0,0 +1,34 @@
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.CustomerService.Entities;
+
+/// <summary>
+/// 工单评论/流转记录。
+/// </summary>
+public sealed class TicketComment : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 工单标识。
+    /// </summary>
+    public Guid SupportTicketId { get; set; }
+
+    /// <summary>
+    /// 评论人 ID。
+    /// </summary>
+    public Guid? AuthorUserId { get; set; }
+
+    /// <summary>
+    /// 评论内容。
+    /// </summary>
+    public string Content { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 是否内部备注。
+    /// </summary>
+    public bool IsInternal { get; set; }
+
+    /// <summary>
+    /// 附件 JSON。
+    /// </summary>
+    public string? AttachmentsJson { get; set; }
+}