feat(config): 实现英雄能力调整与英雄池扩展

完成以下核心变更：
1. 重构英雄卡牌消耗逻辑，按等级分档定价
2. 更新现有英雄数值规则，统一永久属性与概率buff效果
3. 新增10名新英雄并完善配置
4. 补充冰冻强化技能与对应计时buff
5. 更新英雄池列表与设计文档

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

@@ -1,6 +1,5 @@
 import * as exp from "constants"
 import { HeroInfo, HeroList, HType } from "./heroSet"
-import { FightSet } from "./GameSet"
 import { oops } from "db://oops-framework/core/Oops"
 import { SkillOverrides, TGroup } from "./SkillSet"
 
@@ -97,17 +96,22 @@ export interface CardConfig {
 export const CardPoolList: CardConfig[] = [];
 
 // 动态生成英雄卡池：所有英雄统一生成 lv1 卡牌
+function getHeroCost(cardLv: number): number {
+    if (cardLv === 1) return 5;
+    if (cardLv === 2) return 10;
+    return 15;
+}
+
 HeroList.forEach(uuid => {
     const hero = HeroInfo[uuid];
     if (!hero) return;
 
-    const baseCost = FightSet.BASE_COST;
     const baseWeight = 25;
 
     CardPoolList.push({
         uuid: hero.uuid,
         type: CardType.Hero,
-        cost: baseCost,
+        cost: getHeroCost(hero.card_lv ?? 1),
         weight: baseWeight,
         card_lv: hero.card_lv ?? 1,
         kind: CKind.Hero,