1namespace WindowCapture.Models
 2{
 3    public class UndoAction
 4    {
 5        public string Type; // "highlight", "arrow", "marker", "text", "bubble"
 6        public object Item;
 7
 8        public UndoAction(string type, object item)
 9        {
10            Type = type;
11            Item = item;
12        }
13    }
14}