feat(hero list): add hero upgrade animation effect

新增英雄升级成功时的播放动画特效，包括：
1. 新增动画节点绑定属性与初始化隐藏逻辑
2. 添加升级动画播放与播放完成自动隐藏的方法
3. 新增升级动画资源文件与配置元数据

assets/script/game/map/HerosListComp.ts

@@ -87,6 +87,10 @@ export class HerosListComp extends CCComp {
     @property(Node)
     chip_node = null!
 
+    /** 升级特效动画节点（内含升级效果 Animation，点击升级时从头播放） */
+    @property(Node)
+    upgrade_anim_node = null!
+
     // ======================== 运行时状态 ========================
 
     huuid: number = 0
@@ -97,6 +101,8 @@ export class HerosListComp extends CCComp {
     start() {
         this.bindUpgradeBtn()
         this.initCardList()
+        // 升级特效动画初始隐藏，点击升级时才显示播放
+        if (this.upgrade_anim_node) this.upgrade_anim_node.active = false
         if (HeroList.length > 0) {
             this.onCardSelect(HeroList[0])
         }
@@ -171,6 +177,7 @@ export class HerosListComp extends CCComp {
         const success = smc.upgradeHero(uuid)
         if (success) {
             mLogger.log(this.debugMode, "HerosListComp", `英雄 ${uuid} 升级成功`)
+            this.playUpgradeAnim()
             this.updateHeroDetail(uuid)
         } else {
             const growth = smc.getHeroGrowth(uuid)
@@ -204,6 +211,44 @@ export class HerosListComp extends CCComp {
             .start()
     }
 
+    /**
+     * 播放升级特效动画
+     * 每次升级成功均从头播放；动画未播完时再次升级，立即重新开始
+     */
+    private playUpgradeAnim() {
+        if (!this.upgrade_anim_node) {
+            mLogger.log(this.debugMode, "HerosListComp", "playUpgradeAnim: upgrade_anim_node 未绑定")
+            return
+        }
+        const anim = this.upgrade_anim_node.getComponent(Animation)
+        const clip = anim?.clips?.[0]
+        if (!anim || !clip) {
+            mLogger.log(this.debugMode, "HerosListComp", "playUpgradeAnim: 缺少 Animation 组件或动画剪辑")
+            return
+        }
+
+        this.upgrade_anim_node.active = true
+        // 停止当前播放（如有），保证从头开始
+        anim.stop()
+
+        const animState = anim.getState(clip.name)
+        if (animState) {
+            // 防止重复注册，播放结束后自动隐藏特效节点
+            animState.off('finished', this.onUpgradeAnimFinished, this)
+            animState.once('finished', this.onUpgradeAnimFinished, this)
+        }
+        anim.play(clip.name)
+    }
+
+    /**
+     * 升级特效动画播放结束回调：隐藏特效节点
+     */
+    private onUpgradeAnimFinished() {
+        if (this.upgrade_anim_node && this.upgrade_anim_node.isValid) {
+            this.upgrade_anim_node.active = false
+        }
+    }
+
     /**
      * 在升级按钮附近弹出 smalltip 气泡提示
      * @param text 提示文案