扩充道具系统并统一图标命名规范

- 为 20 个道具赋予中文名称（铁护腕、狂战士药剂等）
- 移除数据表 IconAssetName 列，改为按 `类型_{id}_icon`
  的命名约定自动推导图标路径
- 清理旧图标资源（Almighty_Icon、172 系列）
- 同步更新各数据表 Excel 源文件

Assets/GameMain/Scripts/Base/DataTable/DRLevelUpReward.cs

@@ -13,7 +13,7 @@ namespace SepCore.DataTable
 
         public string Title { get; private set; }
 
-        public string IconAssetName { get; private set; }
+        public string IconAssetName => $"levelupreward_{m_Id}_icon";
         
         public ItemRarity Rarity { get; private set; }
 
@@ -28,7 +28,6 @@ namespace SepCore.DataTable
             m_Id = int.Parse(fields[index++]);
             index++;
             Title = fields[index++];
-            IconAssetName = fields[index++];
             Rarity = EnumUtility<ItemRarity>.Get(fields[index++]);
             Modifiers = JsonConvert.DeserializeObject<StatModifier[]>(fields[index++]);
 

Assets/GameMain/Scripts/Base/DataTable/DRProp.cs

@@ -11,7 +11,7 @@ namespace SepCore.DataTable
 
         public override int Id => m_Id;
         public string Title { get; private set; }
-        public string IconAssetName { get; private set; }
+        public string IconAssetName => $"prop_{m_Id}_icon";
         public ItemRarity Rarity { get; private set; }
         public int Price { get; private set; }
         public float PriceRandomPercent { get; private set; }
@@ -26,7 +26,6 @@ namespace SepCore.DataTable
             m_Id = int.Parse(fields[index++]);
             index++;
             Title = fields[index++];
-            IconAssetName = fields[index++];
             Rarity = EnumUtility<ItemRarity>.Get(fields[index++]);
             Price = int.Parse(fields[index++]);
             PriceRandomPercent = float.Parse(fields[index++]);

Assets/GameMain/Scripts/Base/DataTable/DRRole.cs

@@ -23,7 +23,7 @@ namespace SepCore.DataTable
         /// <summary>
         /// 获取图标名称。
         /// </summary>
-        public string IconName { get; private set; }
+        public string IconName => $"role_{m_Id}_icon";
 
         /// <summary>
         /// 获取初始最大生命。
@@ -66,7 +66,6 @@ namespace SepCore.DataTable
             m_Id = int.Parse(columnStrings[index++]);
             index++;
             RoleName = columnStrings[index++];
-            IconName = columnStrings[index++];
             MaxHealth = int.Parse(columnStrings[index++]);
             Speed = float.Parse(columnStrings[index++]);
             Coin = int.Parse(columnStrings[index++]);

Assets/GameMain/Scripts/Base/DataTable/DRWeapon.cs

@@ -30,7 +30,7 @@ namespace SepCore.DataTable
         /// <summary>
         /// 获取图标资源名称。
         /// </summary>
-        public string IconAssetName { get; private set; }
+        public string IconAssetName => $"weapon_{m_Id}_icon";
 
         /// <summary>
         /// 获取武器稀有度
@@ -92,7 +92,6 @@ namespace SepCore.DataTable
             index++;
             EntityTypeId = int.Parse(columnStrings[index++]);
             Title = columnStrings[index++];
-            IconAssetName = columnStrings[index++];
             Rarity = EnumUtility<ItemRarity>.Get(columnStrings[index++]);
             Price = int.Parse(columnStrings[index++]);
             PriceRandomPercent = float.Parse(columnStrings[index++]);