升级

src/Jiaowu.Api/Domain/Academic/Archiving.cs

@@ -0,0 +1,23 @@
+using System.ComponentModel.DataAnnotations;
+using Jiaowu.Api.Domain.Common;
+
+namespace Jiaowu.Api.Domain.Academic;
+
+public interface IArchivable
+{
+    bool IsArchived { get; set; }
+    DateTime? ArchivedAt { get; set; }
+    Guid? ArchivedByUserId { get; set; }
+    string? ArchiveReason { get; set; }
+}
+
+// Append-only history; deliberately independent of entity deletion and login-account lifecycle.
+public sealed class ArchiveEvent : EntityBase
+{
+    [MaxLength(20)] public required string Kind { get; set; }
+    public Guid EntityId { get; set; }
+    public bool IsArchived { get; set; }
+    public Guid ActorUserId { get; set; }
+    [MaxLength(256)] public string? ActorName { get; set; }
+    [MaxLength(500)] public required string Reason { get; set; }
+}