Fome further save load work

Assets/Scripts/Interactions/SaveableInteractable.cs

@@ -14,6 +14,15 @@ namespace Interactions
         [SerializeField] 
         [Tooltip("Optional custom save ID. If empty, will auto-generate from hierarchy path.")]
         private string customSaveId = "";
+        
+        /// <summary>
+        /// Sets a custom save ID for this interactable.
+        /// Used when spawning dynamic objects that need stable save IDs.
+        /// </summary>
+        public void SetCustomSaveId(string saveId)
+        {
+            customSaveId = saveId;
+        }
 
         /// <summary>
         /// Flag to indicate we're currently restoring from save data.
@@ -258,4 +267,3 @@ namespace Interactions
 
     #endregion
 }
-