feat(marketing): add new customer gift backend module

src/Domain/TakeoutSaaS.Domain/Coupons/Entities/NewCustomerGrowthRecord.cs

@@ -0,0 +1,44 @@
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Coupons.Entities;
+
+/// <summary>
+/// 新客成长记录。
+/// </summary>
+public sealed class NewCustomerGrowthRecord : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 门店 ID。
+    /// </summary>
+    public long StoreId { get; set; }
+
+    /// <summary>
+    /// 顾客业务唯一键。
+    /// </summary>
+    public string CustomerKey { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 顾客展示名。
+    /// </summary>
+    public string? CustomerName { get; set; }
+
+    /// <summary>
+    /// 注册时间。
+    /// </summary>
+    public DateTime RegisteredAt { get; set; }
+
+    /// <summary>
+    /// 礼包领取时间。
+    /// </summary>
+    public DateTime? GiftClaimedAt { get; set; }
+
+    /// <summary>
+    /// 首单时间。
+    /// </summary>
+    public DateTime? FirstOrderAt { get; set; }
+
+    /// <summary>
+    /// 渠道来源。
+    /// </summary>
+    public string? SourceChannel { get; set; }
+}