feat(skill-system): 新增计时debuff机制，支持技能命中敌方附加减益效果

本次提交完整实现了技能对敌附加debuff的完整流程：
1.  新增TimedDebuffSnapshot数据结构，用于透传debuff配置
2.  在SkillConfig和SkillOverrides中新增debuff相关配置项
3.  实现HeroAtkSystem中debuff的判定与施加逻辑
4.  完善后台配置、前端编辑器的debuff配置支持
5.  调整了buff目标判定逻辑，修复了原有默认目标的语义混淆问题
6.  优化了BuffSystem的调试日志，新增了debuff分类标识
7.  批量更新了现有英雄技能的debuff配置示例

assets/script/game/hero/BuffManager.ts

@@ -11,6 +11,7 @@
 import { ecs } from "../../../../extensions/oops-plugin-framework/assets/libs/ecs/ECS";
 import { BuffCategory, BuffList } from "../common/config/BuffSet";
 import { BuffComp, ActiveBuff } from "./BuffComp";
+import { HeroAttrsComp } from "./HeroAttrsComp";
 import { mLogger } from "../common/Logger";
 
 /** applyBuff 的覆盖参数（预留按需覆写持续时间 / 修饰数值） */
@@ -46,10 +47,12 @@ class BuffManagerImpl {
             mLogger.warn(true, "BuffManager", `applyBuff: buffId=${buffId} 配置不存在，跳过`);
             return;
         }
-        mLogger.log(this.debug, "BuffManager", `[挂buff] 「${cfg.name}」(buffId:${buffId}) -> target_eid:${target.eid} duration:${overrides?.duration ?? cfg.duration} value:${overrides?.value ?? "-"} source_ap:${sourceAp}`);
 
         const buffComp = this.ensureBuffComp(target);
         const duration = overrides?.duration ?? cfg.duration;
+        const targetName = target.get(HeroAttrsComp)?.hero_name ?? `eid:${target.eid}`;
+        // buff/debuff 类别标签，便于日志区分挂载语义
+        const categoryTag = cfg.category === BuffCategory.Debuff ? "debuff" : cfg.category === BuffCategory.Control ? "control" : "buff";
 
         let layers = buffComp.buffs.get(buffId);
         if (!layers) {
@@ -59,14 +62,18 @@ class BuffManagerImpl {
 
         const newLayer = new ActiveBuff(buffId, duration, sourceUuid, sourceAp, overrides?.value, overrides?.source_attrs);
 
+        let refreshed = false;
         if (cfg.max_stack === 0 || layers.length < cfg.max_stack) {
             layers.push(newLayer);
         } else {
+            // 满层 FIFO：移除最老层后追加新层
             layers.shift();
             layers.push(newLayer);
+            refreshed = true;
         }
 
         buffComp.dirty_buffs = true;
+        mLogger.log(this.debug, "BuffManager", `[挂${categoryTag}] 「${cfg.name}」(buffId:${buffId}) -> ${targetName} 时长:${duration}s 数值:${overrides?.value ?? "-"} 来源ap:${sourceAp} 当前层数:${layers.length}${cfg.max_stack > 0 ? `/${cfg.max_stack}` : ""}${refreshed ? "（满层刷新）" : ""}`);
     }
 
     /**