重构(地图卡牌): 抽离技能卡牌逻辑为独立组件

- 新增SCardComp.ts，实现技能卡牌专属的UI渲染、点击交互与使用逻辑
- 更新MissionCardComp.ts，替换技能卡槽的组件类型为SCardComp并修正相关代码
- 重构CardComp.ts：移除所有Skill类型卡牌的处理代码，修复卡牌等级取值优先级问题，简化拖拽逻辑仅保留英雄卡上划使用功能

assets/script/game/map/MissionCardComp.ts

@@ -39,6 +39,7 @@ import { CCComp } from "../../../../extensions/oops-plugin-framework/assets/modu
 import { GameEvent } from "../common/config/GameEvent";
 import { CARD_POOL_INIT_LEVEL, CARD_POOL_MAX_LEVEL, CARD_POOL_UPGRADE_DISCOUNT_PER_WAVE, CardConfig, CardType, CardsUpSet, drawCardsByRule, getCardsByLv, SpecialRefreshCardList, SpecialRefreshHeroType, SpecialUpgradeCardList } from "../common/config/CardSet";
 import { CardComp } from "./CardComp";
+import { SCardComp } from "./SCardComp";
 import { oops } from "db://oops-framework/core/Oops";
 import { HeroAttrsComp } from "../hero/HeroAttrsComp";
 import { smc } from "../common/SingletonModuleComp";
@@ -138,7 +139,7 @@ export class MissionCardComp extends CCComp {
     /** 四个槽位对应的 CardComp 控制器缓存（有序数组） */
     private cardComps: CardComp[] = [];
     /** 技能卡槽控制器缓存 */
-    private skillCardComps: CardComp[] = [];
+    private skillCardComps: SCardComp[] = [];
     /** 当前卡池等级（仅影响抽卡来源，不直接改卡槽现有内容） */
     private poolLv: number = CARD_POOL_INIT_LEVEL;
     /** 是否已缓存卡牌面板基准缩放 */
@@ -671,8 +672,8 @@ export class MissionCardComp extends CCComp {
 
         const skillNodes = [this.skill_card1, this.skill_card2, this.skill_card3];
         this.skillCardComps = skillNodes
-            .map(node => node?.getComponent(CardComp))
-            .filter((comp): comp is CardComp => !!comp);
+            .map(node => node?.getComponent(SCardComp))
+            .filter((comp): comp is SCardComp => !!comp);
     }
 
     // ======================== 核心业务：抽卡 & 升级 ========================