refactor: 将代码中的card_lv统一替换为rarity

本次提交完成了全项目范围内术语的统一替换，将原本指代卡牌品质/等级的card_lv字段全部重命名为rarity，对齐了设计文档中的命名规范，避免了术语混淆：
1.  更新了所有配置文件、组件类、数据结构中的字段定义
2.  同步修改了注释、文档说明中的相关表述
3.  修正了英雄、技能、装备卡牌的品质显示逻辑
4.  调整了背景颜色切换、属性计算等相关业务逻辑

assets/script/game/map/HerosListComp.ts

@@ -25,7 +25,7 @@ import { mLogger } from "../common/Logger";
 import { HeroInfo, HeroList, SkillTriggerType, LvFieldEntry, LvReviveEntry, LvTriggerEntry, TriggerGrouped, getHeroDisplayStats } from "../common/config/heroSet";
 import { buildHeroSkillDesc } from "../common/HeroSkillText";
 import { GameEvent } from "../common/config/GameEvent";
-import { HERO_UPGRADE_NEED_FRAGMENTS, CARD_LV_BG_COLORS } from "../common/config/GameSet";
+import { HERO_UPGRADE_NEED_FRAGMENTS, RARITY_BG_COLORS } from "../common/config/GameSet";
 import { CardLiteComp } from "./CardLiteComp";
 import { ChipComp } from "./ChipComp";
 import { SmallTipComp } from "./SmallTipComp";
@@ -313,7 +313,7 @@ export class HerosListComp extends CCComp {
         this.cards_node.removeAllChildren()
 
         const sorted = [...HeroList].sort((a, b) => {
-            return (HeroInfo[a]?.card_lv ?? 1) - (HeroInfo[b]?.card_lv ?? 1);
+            return (HeroInfo[a]?.rarity ?? 1) - (HeroInfo[b]?.rarity ?? 1);
         });
 
         for (const uuid of sorted) {
@@ -410,7 +410,7 @@ export class HerosListComp extends CCComp {
             if (infoLabel) infoLabel.string = desc || hero.info || ""
         }
 
-        this.updatePoolLvBg(hero.card_lv ?? 1)
+        this.updatePoolLvBg(hero.rarity ?? 1)
         this.updateLvDisplay(uuid)
         this.updateRoleDisplay(hero)
         this.updateHeroAnimation(uuid)
@@ -418,10 +418,10 @@ export class HerosListComp extends CCComp {
         this.updateSkillIcons(hero)
     }
 
-    private updatePoolLvBg(card_lv: number) {
+    private updatePoolLvBg(rarity: number) {
         if (!this.BG_node) return
         // BG_node 下直接放置颜色节点（green/blue/purple/yellow/red），按卡池等级激活对应颜色
-        const color = CARD_LV_BG_COLORS[Math.min(card_lv, 5) - 1]
+        const color = RARITY_BG_COLORS[Math.min(rarity, 5) - 1]
         this.BG_node.children.forEach(child => {
             child.active = (child.name === color)
         })