feat(卡池): 新增基于波次的卡池自动升级功能

- 在 GameEvent 枚举中添加 CardPoolUpgrade 事件
- 在 MissionComp 中配置卡池升级波次并触发升级事件
- 在 MissionCardComp 中监听升级事件并更新卡池等级和UI
- 升级时通过 toast 提示玩家

assets/script/game/map/MissionCardComp.ts

@@ -264,6 +264,7 @@ export class MissionCardComp extends CCComp {
         oops.message.on(GameEvent.HeroDead, this.onHeroDead, this);
         oops.message.on(GameEvent.UseHeroCard, this.onUseHeroCard, this);
         oops.message.on(GameEvent.UseSpecialCard, this.onUseSpecialCard, this);
+        oops.message.on(GameEvent.CardPoolUpgrade, this.onCardPoolUpgrade, this);
 
         /** 按钮触控事件：抽卡与卡池升级 */
         this.cards_chou?.on(NodeEventType.TOUCH_START, this.onDrawTouchStart, this);
@@ -299,6 +300,33 @@ export class MissionCardComp extends CCComp {
         this.enterBattlePhase();
     }
 
+    /**
+     * 接收卡池升级事件：
+     *   - 更新卡池等级
+     *   - 更新UI显示
+     */
+    private onCardPoolUpgrade(event: string, args: any) {
+        const targetLv = args?.targetLv;
+        if (!targetLv) return;
+        
+        if (targetLv > CARD_POOL_MAX_LEVEL) {
+            this.poolLv = CARD_POOL_MAX_LEVEL;
+        } else {
+            this.poolLv = targetLv;
+        }
+        
+        mLogger.log(this.debugMode, "MissionCardComp", "onCardPoolUpgrade", {
+            targetLv,
+            poolLv: this.poolLv
+        });
+        
+        // 提示卡池升级
+        oops.gui.toast(`卡池已升至${this.poolLv}级`);
+        
+        // 更新UI
+        this.updatePoolLvUI();
+    }
+
     /** 新一波：展开面板 → 刷新费用 UI → 重新抽卡分发 */
     private onNewWave() {
         this.enterPreparePhase();
@@ -315,6 +343,7 @@ export class MissionCardComp extends CCComp {
         oops.message.off(GameEvent.HeroDead, this.onHeroDead, this);
         oops.message.off(GameEvent.UseHeroCard, this.onUseHeroCard, this);
         oops.message.off(GameEvent.UseSpecialCard, this.onUseSpecialCard, this);
+        oops.message.off(GameEvent.CardPoolUpgrade, this.onCardPoolUpgrade, this);
         this.cards_chou?.off(NodeEventType.TOUCH_START, this.onDrawTouchStart, this);
         this.cards_chou?.off(NodeEventType.TOUCH_END, this.onDrawTouchEnd, this);
         this.cards_chou?.off(NodeEventType.TOUCH_CANCEL, this.onDrawTouchCancel, this);