为 RepoForm 添加出售功能，ShopNode 只承载玩家购买组件的逻辑

Assets/GameMain/Scripts/UI/Shop/UseCase/ShopFormUseCase.cs

@@ -61,37 +61,16 @@ namespace GeometryTD.UI
                 return false;
             }
 
-            if (!GameEntry.PlayerInventory.TryConsumeGold(goodsItem.Price))
+            if (!GameEntry.PlayerInventory.TryPurchaseComponent(goodsItem.SourceItem, goodsItem.Price))
             {
-                Log.Warning("ShopFormUseCase.TryPurchase() failed. Not enough gold for goods item {0}.", goodsIndex);
+                Log.Warning("ShopFormUseCase.TryPurchase() failed. Purchase command was rejected for goods item {0}.", goodsIndex);
                 return false;
             }
 
-            BackpackInventoryData inventoryDelta = WrapSingleItem(goodsItem.SourceItem);
-            GameEntry.PlayerInventory.MergeInventory(inventoryDelta);
             goodsItem.IsPurchased = true;
             updatedRawData = CreateInitialModel();
             return true;
         }
 
-        private static BackpackInventoryData WrapSingleItem(TowerCompItemData item)
-        {
-            BackpackInventoryData inventory = new BackpackInventoryData();
-            switch (item)
-            {
-                case MuzzleCompItemData muzzleComp:
-                    inventory.MuzzleComponents.Add(InventoryCloneUtility.CloneMuzzleComp(muzzleComp));
-                    break;
-                case BearingCompItemData bearingComp:
-                    inventory.BearingComponents.Add(InventoryCloneUtility.CloneBearingComp(bearingComp));
-                    break;
-                case BaseCompItemData baseComp:
-                    inventory.BaseComponents.Add(InventoryCloneUtility.CloneBaseComp(baseComp));
-                    break;
-            }
-
-            return inventory;
-        }
-
     }
 }