feat(skill): add round end skill trigger system

新增回合结束（FEnd）类型的技能触发机制，包括：
1. 新增SkillTriggerType.FEnd枚举与相关配置映射
2. 为英雄、怪物属性组件添加回合结束技能的运行时解析与存储
3. 实现关卡节间流转时触发全队英雄回合结束技能的逻辑
4. 完善战力计算、技能图标检索等配套支持逻辑

assets/script/game/hero/HeroAttrsComp.ts

@@ -53,6 +53,7 @@ export class HeroAttrsComp extends ecs.Comp {
     [SkillTriggerType.Call]?: TriggerGrouped;
     [SkillTriggerType.Dead]?: TriggerGrouped;
     [SkillTriggerType.FStart]?: TriggerGrouped;
+    [SkillTriggerType.FEnd]?: TriggerGrouped;
     [SkillTriggerType.Atking]?: TriggerGrouped;
     [SkillTriggerType.Atked]?: TriggerGrouped;
     /** 驻场光环（按 lv 解锁，存活期间全局生效） */
@@ -71,6 +72,8 @@ export class HeroAttrsComp extends ecs.Comp {
     runtime_dead?: { s_uuid: number; t_num: number; overrides?: SkillOverrides }[];
     /** 当前等级下生效的战前触发条目 */
     runtime_fstart?: { s_uuid: number; t_num: number; overrides?: SkillOverrides }[];
+    /** 当前等级下生效的回合结束触发条目 */
+    runtime_fend?: { s_uuid: number; t_num: number; overrides?: SkillOverrides }[];
     /** 当前等级下生效的驻场光环词条列表 */
     runtime_field?: FieldEntry[];
 
@@ -725,6 +728,7 @@ export class HeroAttrsComp extends ecs.Comp {
         this.call = undefined;
         this.dead = undefined;
         this.fstart = undefined;
+        this.fend = undefined;
         this.atking = undefined;
         this.atked = undefined;
         this.field = undefined;
@@ -734,6 +738,7 @@ export class HeroAttrsComp extends ecs.Comp {
         this.runtime_call = undefined;
         this.runtime_dead = undefined;
         this.runtime_fstart = undefined;
+        this.runtime_fend = undefined;
         this.runtime_field = undefined;
         this.critical = 0;
         this.critical_res = 0;