refactor(hero cast): add buff effect animation resolution logic

新增根据buff属性解析对应增益特效动画名的方法，并在施加永久和计时buff时播放对应特效

assets/script/game/hero/SCastSystem.ts

@@ -517,6 +517,13 @@ export class SCastSystem extends ecs.ComblockSystem implements ecs.ISystemUpdate
         }
     }
 
+    /** 解析 buff 增益特效动画名：攻击提升→up_ap，攻速提升→up_cd，其余→up_blue */
+    private resolveBuffEndAnm(attr?: Attrs): string {
+        if (attr === Attrs.ap) return "up_ap";
+        if (attr === Attrs.speed) return "up_cd";
+        return "up_blue";
+    }
+
     private applyActualFriendlyEffect(target: HeroViewComp, kind: SkillKind, sAp: number, _cAttrsComp: HeroAttrsComp, config: SkillConfig, _skillLv: number = 1) {
         if (!target.ent) return;
         const model = target.ent.get(HeroAttrsComp);
@@ -570,6 +577,8 @@ export class SCastSystem extends ecs.ComblockSystem implements ecs.ISystemUpdate
                     _cAttrsComp.ap,
                     Object.keys(buffOverrides).length > 0 ? buffOverrides : undefined
                 );
+                // 播放计时 buff 增益特效：按修饰属性区分（攻击提升/攻速提升/其他）
+                target.playEnd(this.resolveBuffEndAnm(BuffList[config.timed_buff_id]?.modifiers?.[0]?.attr));
                 return;
             }
 
@@ -577,6 +586,9 @@ export class SCastSystem extends ecs.ComblockSystem implements ecs.ISystemUpdate
             // buff 强化（buff_power，百分点）：辅助专精天赋写入，按施法者放大永久 buff 数值
             const totalBuffValue = config.ap * (1 + _cAttrsComp.buff_power / 100);
 
+            // 播放永久 buff 增益特效：按 buff 属性区分（攻击提升/攻速提升/其他）
+            target.playEnd(this.resolveBuffEndAnm(config.buff_type));
+
             switch (config.buff_type) {
                 case Attrs.ap: {
                     // 攻击力按基础 ap 的百分比提升