refactor(skill): 重构技能系统以支持对象池复用

将技能节点管理改为使用对象池模式，提高性能
添加技能节点复用时的初始化逻辑
统一技能组件获取和重置方式
更新英雄配置中的默认技能

assets/script/game/common/config/heroSet.ts

@@ -166,11 +166,11 @@ export const HeroInfo: Record<number, heroInfo> = {
 
     // 1. 基础近战型
     5201:{uuid:5201,name:"兽人战士",path:"mo1", fac:FacSet.MON, kind:1,as:3.0,
-        type:HType.warrior,lv:1,hp:40,mp:100,def:0,ap:5,dis:60,speed:180,skills:[6201],
+        type:HType.warrior,lv:1,hp:40,mp:100,def:0,ap:5,dis:60,speed:180,skills:[6005],
         buff:[],tal:[],info:"标准炮灰：确保英雄能完成3次普攻积累天赋计数"},
     // 2. 快速突击型
     5301:{uuid:5301,name:"兽人斥候",path:"mo1", fac:FacSet.MON, kind:1,as:1.2,
-        type:HType.assassin,lv:1,hp:30,mp:100,def:0,ap:12,dis:50,speed:400,skills:[6201],
+        type:HType.assassin,lv:1,hp:30,mp:100,def:0,ap:12,dis:50,speed:400,skills:[6005],
         buff:[],tal:[],info:"快速突击：极高移速贴脸，检测护盾(7102)刷新率"},
     // 3. 重型坦克型
     5401:{uuid:5401,name:"兽人卫士",path:"mo1", fac:FacSet.MON, kind:1,as:5.0,
@@ -184,7 +184,7 @@ export const HeroInfo: Record<number, heroInfo> = {
 
     // 5. 特殊机制型
     5601:{uuid:5601,name:"兽人自爆兵",path:"mo1", fac:FacSet.MON, kind:1,as:3.0,
-        type:HType.assassin,lv:1,hp:60,mp:100,def:0,ap:250,dis:50,speed:220,skills:[6201],
+        type:HType.assassin,lv:1,hp:60,mp:100,def:0,ap:250,dis:50,speed:220,skills:[6005],
         buff:[],tal:[],info:"特殊机制：极端伤害，漏怪即秒杀，检测减伤(7103)"},
      // 召唤师：持续召唤小怪（后续可在技能系统中实现 SType.zhaohuan）
     5602:{uuid:5602,name:"兽人召唤师",path:"mo1", fac:FacSet.MON, kind:1,as:3.0,