refactor(game/config): 替换硬编码费用为集中配置项

新增GameSet.ts中FightSet枚举的REFRESH_COST和BASE_COST常量，替换CardSet.ts和MissionCardComp.ts内的硬编码费用值。

assets/script/game/common/config/CardSet.ts

@@ -97,7 +97,7 @@ HeroList.forEach(uuid => {
 
     const basePoolLv = hero.pool_lv || 1;
     const baseHeroLv = hero.lv || 1;
-    const baseCost = 5;
+    const baseCost = FightSet.BASE_COST;
     const baseWeight = 25;
 
     // 生成从 basePoolLv 到 CARD_POOL_MAX_LEVEL 的卡牌

assets/script/game/common/config/GameSet.ts

@@ -38,6 +38,9 @@ export enum FightSet {
     SHIELD_MAX = 5,
     WAVE_HEAL_RATE = 0.5, // 回合结束时所有英雄恢复最大生命值的比例
     PUNCTURE_DOWN = 50,
+    REFRESH_COST = 1,
+    BASE_COST=3
+    // 刷新成本
 }
 
 export const laneIdx = {