后端：

add(GroupNotification)：合并群通知表

backend/IM_API/VOs/Group/GroupInviteActionUpdateVo.cs

@@ -8,6 +8,6 @@ namespace IM_API.VOs.Group
         public int InviteUserId { get; set; }
         public int InvitedUserId { get; set; }
         public int InviteId { get; set; }
-        public GroupInviteState Action { get; set; }
+        public GroupRequestState Action { get; set; }
     }
 }

backend/IM_API/VOs/Group/GroupNotificationVo.cs

@@ -0,0 +1,21 @@
+using IM_API.Models;
+
+namespace IM_API.VOs.Group
+{
+    public class GroupNotificationVo
+    {
+        public int RequestId { get; set; }
+        public int? UserId { get; set; }
+        public string? NickName { get; set; }
+        public string? UserAvatar { get; set; }
+        public int GroupId { get; set; }
+        public string? GroupAvatar { get; set; }
+        public string? GroupName { get; set; }
+
+        public GroupRequestState Status { get; set; }
+        public string Description { get; set; }
+        public int? InviteUser { get; set; }
+        public string? InviteUserNickname { get; set; }
+        public string? InviteUserAvatar { get; set;  }
+    }
+}