refactor: 统一将 pool_lv 重命名为 card_lv 并清理废弃代码

本次提交完成了全项目范围内的术语统一重构：
1.  将所有`pool_lv`相关变量、字段、注释替换为`card_lv`，对齐卡牌等级的业务含义
2.  移除了配置中冗余的默认`pool_lv`赋值，简化数据结构
3.  删除了废弃的`HlistComp.ts`组件及其元文件
4.  修正了多处逻辑错误，确保卡牌等级正确驱动背景框切换
5.  更新了相关注释和文档，保持代码一致性

assets/script/game/map/HerosListComp.ts

@@ -116,7 +116,7 @@ export class HerosListComp extends CCComp {
         this.cards_node.removeAllChildren()
 
         const sorted = [...HeroList].sort((a, b) => {
-            return (HeroInfo[a]?.pool_lv ?? 1) - (HeroInfo[b]?.pool_lv ?? 1);
+            return (HeroInfo[a]?.card_lv ?? 1) - (HeroInfo[b]?.card_lv ?? 1);
         });
 
         for (const uuid of sorted) {
@@ -136,7 +136,7 @@ export class HerosListComp extends CCComp {
             })
 
             const comp = cardNode.getComponent(CardLiteComp) || cardNode.addComponent(CardLiteComp)
-            comp.setHeroByUuid(uuid, hero.pool_lv ?? 1)
+            comp.setHeroByUuid(uuid, hero.card_lv ?? 1)
             comp.onClickCallback = (cardComp: CardLiteComp) => {
                 this.onCardSelect(uuid)
                 this.highlightCard(cardNode)
@@ -209,7 +209,7 @@ export class HerosListComp extends CCComp {
             if (infoLabel) infoLabel.string = desc || hero.info || ""
         }
 
-        this.updatePoolLvBg(hero.pool_lv ?? 1)
+        this.updatePoolLvBg(hero.card_lv ?? 1)
         this.updateLvDisplay(hero)
         this.updateTypeDisplay(hero)
         this.updateHeroAnimation(uuid)
@@ -237,7 +237,7 @@ export class HerosListComp extends CCComp {
 
     private updateLvDisplay(hero: typeof HeroInfo[number]) {
         if (!this.lv_node) return
-        const cardLvStr = `lv${hero.pool_lv ?? 1}`
+        const cardLvStr = `lv${hero.card_lv ?? 1}`
         this.lv_node.active = true
         this.lv_node.children.forEach(child => {