feat(heroBox): 实现当前等级技能描述面板功能

1. 新增SkillDescSet结构化技能描述配置表，实现配置驱动的文案生成
2. 改造HeroSkillDesc生成器，支持静态heroInfo和运行时HeroAttrsComp两种数据源
3. 为HeroAttrsComp新增evolve配置快照字段，用于展示等级成长属性
4. 在HeroBoxComp中集成技能描述UI组件，动态渲染当前英雄等级的技能效果
5. 新增设计文档说明方案细节，确保可维护性和可扩展性

assets/script/game/hero/Hero.ts

@@ -166,6 +166,8 @@ export class Hero extends ecs.Entity {
 
         // 应用等级进化配置（从 lv2 开始逐级覆盖）
         if (hero.evolve) {
+            // 记录 evolve 配置快照（只读引用），供 UI 计算 ap/hp 额外加成文案
+            model.evolve = hero.evolve;
             for (let elv = 2; elv <= hero_lv; elv++) {
                 const evo = hero.evolve[elv];
                 if (!evo) continue;

assets/script/game/hero/HeroAttrsComp.ts

@@ -1,5 +1,5 @@
 import { ecs } from "../../../../extensions/oops-plugin-framework/assets/libs/ecs/ECS";
-import { HeroDisVal, HeroInfo, HSkillInfo, HType, SkillTriggerType } from "../common/config/heroSet";
+import { HeroDisVal, HeroInfo, HSkillInfo, HType, SkillTriggerType, HeroEvolve } from "../common/config/heroSet";
 import { mLogger } from "../common/Logger";
 import { FacSet, FightSet } from "../common/config/GameSet";
 import { FieldSkillSet, FieldSkillType, SkillOverrides } from "../common/config/SkillSet";
@@ -52,6 +52,9 @@ export class HeroAttrsComp extends ecs.Comp {
     [SkillTriggerType.Field]?: number[];
     [SkillTriggerType.Revive]?: { s_uuid: number, r_num: number, upr: number };
 
+    /** 等级进化配置快照（引用 heroInfo.evolve，只读；供 UI 计算 ap/hp 额外加成文案） */
+    evolve?: Record<number, HeroEvolve>;
+
     // ==================== 特殊属性 ====================
     critical: number = 0;       // 暴击率
     critical_res: number = 0;   // 暴击抗性
@@ -545,6 +548,7 @@ export class HeroAttrsComp extends ecs.Comp {
         this.atking = undefined;
         this.atked = undefined;
         this.revive = undefined;
+        this.evolve = undefined;
         this.critical = 0;
         this.critical_res = 0;
         this.freeze_chance = 0;