refactor(map): 重构局内经济系统，统一封装金币操作逻辑

新建MissionEconomy类作为局内经济统一管理入口，整合原分散在HInfoComp、MissionComp、CardComp、MissionCardComp中的金币计算、消费、收益统计逻辑，移除各组件中重复的getMissionCoin、setMissionCoin、getRefreshCost等工具方法，统一维护评分系统的金币统计，提升代码可维护性。

assets/script/game/map/CardComp.ts

@@ -33,6 +33,7 @@ import { smc } from "../common/SingletonModuleComp";
 import { UIID } from "../common/config/GameUIConfig";
 import { HeroAttrsComp } from "../hero/HeroAttrsComp";
 import { TalentType } from "../common/config/TalentSet";
+import { MissionEconomy } from "./MissionEconomy";
 
 
 
@@ -291,19 +292,7 @@ export class CardComp extends CCComp {
     useCard(): CardConfig | null {
         if (!this.cardData || this.isUsing) return null;
         const cardCost = this.card_cost;
-        const currentCoin = this.getMissionCoin();
-        // 金币不足 → 提示并回弹
-        if (currentCoin < cardCost) {
-            oops.gui.toast(`金币不足，召唤需要${cardCost}`);
-            this.playReboundAnim();
-            mLogger.log(this.debugMode, "CardComp", "use card coin not enough", {
-                uuid: this.cardData.uuid,
-                type: this.cardData.type,
-                cardCost,
-                currentCoin
-            });
-            return null;
-        }
+        
         // 英雄卡特殊校验：通过 guard 对象实现"可取消"模式
         if (this.cardData.type === CardType.Hero) {
             const guard = {
@@ -319,16 +308,24 @@ export class CardComp extends CCComp {
                 return null;
             }
         }
-        // 扣除金币
-        this.setMissionCoin(currentCoin - cardCost);
-        // 【评分系统 - 效率分】记录购卡消耗的金币，以及刷新后的选中卡次数（命中率分子）
-        smc.vmdata.scores.gold_spent += cardCost;
+
+        // 使用统一经济管理入口消费金币
+        const success = MissionEconomy.spendCoin(cardCost);
+        if (!success) {
+            oops.gui.toast(`金币不足，召唤需要${cardCost}`);
+            this.playReboundAnim();
+            mLogger.log(this.debugMode, "CardComp", "use card coin not enough", {
+                uuid: this.cardData.uuid,
+                type: this.cardData.type,
+                cardCost,
+                currentCoin: MissionEconomy.getCoin()
+            });
+            return null;
+        }
+
+        // 【评分系统 - 效率分】记录刷新后的选中卡次数（命中率分子）
         smc.vmdata.scores.refresh_hit_count++;
         
-        oops.message.dispatchEvent(GameEvent.CoinAdd, {
-            syncOnly: true,
-            delta: -cardCost
-        });
         // 标记使用中，阻止并发操作
         this.isUsing = true;
         const used = this.cardData;
@@ -336,7 +333,7 @@ export class CardComp extends CCComp {
             uuid: used.uuid,
             type: used.type,
             cost: cardCost,
-            leftCoin: this.getMissionCoin()
+            leftCoin: MissionEconomy.getCoin()
         });
         // 播放消失动画 → 动画结束后清槽并分发效果
         this.playUseDisappearAnim(() => {
@@ -1194,18 +1191,7 @@ export class CardComp extends CCComp {
 
     // ======================== 数据访问 ========================
 
-    /** 从全局单例获取当前局内金币数量 */
-    private getMissionCoin(): number {
-        const missionData = smc?.vmdata?.mission_data;
-        return Math.max(0, Math.floor(missionData?.coin ?? 0));
-    }
 
-    /** 设置当前局内金币数量（自动向下取整并 clamp 至 >= 0） */
-    private setMissionCoin(value: number) {
-        const missionData = smc?.vmdata?.mission_data;
-        if (!missionData) return;
-        missionData.coin = Math.max(0, Math.floor(value));
-    }
 
     /** ECS 组件移除时的释放钩子：销毁节点 */
     reset() {