Merge branch 'feature/snapshot' into test

src/Hotline/Snapshot/InviteCode.cs

@@ -39,7 +39,7 @@ public class InviteCode : CreationSoftDeleteEntity
     /// 上级部门ID
     /// </summary>
     [SugarColumn(ColumnDescription = "上级部门ID")]
-    public string ParentOrgId { get; set; }
+    public string? ParentOrgId { get; set; }
 
     /// <summary>
     /// 邀请码Url