More inventory fixes

src/items/consumable/ConsumableItem.cs

@@ -10,6 +10,8 @@ public partial class ConsumableItem : Node3D, IInventoryItem
 {
   public override void _Notification(int what) => this.Notify(what);
 
+  public Guid ID { get; } = new Guid();
+
   [Dependency] public IGameRepo GameRepo => this.DependOn<IGameRepo>();
 
   public InventoryItemInfo Info => ConsumableItemInfo;