건설 퀵슬롯 생성

Assets/Scripts/BuildingData.cs

@@ -8,6 +8,8 @@ namespace Northbound
         [Header("Building Info")]
         public string buildingName;
         public GameObject prefab;
+        [Tooltip("UI에 표시될 건물 아이콘")]
+        public Sprite icon;
 
         [Header("Grid Size")]
         [Tooltip("Width in grid units")]