多轮审查和修复

Assets/Scripts/World/Shop/ShopItemSO.cs

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+using UnityEngine;
+using BaseGames.Equipment;
+
+namespace BaseGames.World.Shop
+{
+    /// <summary>
+    /// 商店单品 SO（架构 15_MapShopModule §2.1）。
+    /// 资产路径: Assets/ScriptableObjects/Shop/Item_{ItemId}.asset
+    /// </summary>
+    [CreateAssetMenu(menuName = "World/Shop/ShopItem")]
+    public class ShopItemSO : ScriptableObject
+    {
+        [Header("标识")]
+        public string ItemId;
+        public string DisplayName;
+        [TextArea(2, 5)]
+        public string Description;
+        public Sprite Icon;
+
+        [Header("价格")]
+        public int  BasePrice;
+        public bool IsUnique;           // 购买一次后永久从库存移除
+
+        [Header("商品类型")]
+        public ShopItemType ItemType;
+
+        // 按 ItemType 填写以下字段（其余留空）
+        public int      HealthRestoreAmount;    // HealthRestoration 类型
+        public CharmSO  CharmReference;         // CharmItem 类型
+        public string   KeyItemId;              // KeyItem 类型
+        public int      MaxPurchaseCount = -1;  // -1 = 无限次
+    }
+
+    public enum ShopItemType
+    {
+        HealthRestoration,
+        CharmItem,
+        KeyItem,
+        ConsumableBuff,
+        MapFragment,
+    }
+}