refactor(monster): 重构移动组件体系，统一英雄与怪物移动逻辑

1. 删除废弃的 MonMoveComp，将功能合并到 MoveComp 中
2. 移除 MissionComp 中冗余的怪物最大数量配置计算
3. 优化英雄站位分配逻辑，近战优先靠前站位
4. 统一移动系统的边界约束与渲染排序逻辑
5. 清理 Hero.ts 中未使用的导入项

assets/script/game/hero/Mon.ts

@@ -7,7 +7,6 @@ import { HeroInfo, resolveTriggerByLv, resolveReviveByLv } from "../common/confi
 import { HeroAttrsComp } from "./HeroAttrsComp";
 import { HeroViewComp } from "./HeroViewComp";
 import { MoveComp } from "./MoveComp";
-import { MonMoveComp } from "./MonMoveComp";
 import { GameEvent } from "../common/config/GameEvent";
 import { SkillTriggerType, HType } from "../common/config/heroSet";
 import { SkillTriggerHelper } from "./SkillTriggerHelper";
@@ -19,7 +18,7 @@ export class Monster extends ecs.Entity {
     /** 怪物表现组件引用 */
     HeroView!: HeroViewComp;
     /** 怪物移动组件引用 */
-    MonMove!: MonMoveComp;
+    MonMove!: MoveComp;
     /** 调试开关，控制生命周期日志输出 */
     private debugMode: boolean = false;
 
@@ -98,7 +97,7 @@ export class Monster extends ecs.Entity {
     /** 注册实体必需组件：移动 + 属性 */
     protected init() {
         this.addComponents<ecs.Comp>(
-            MonMoveComp,
+            MoveComp,
             HeroAttrsComp,
         );
     }
@@ -249,7 +248,7 @@ export class Monster extends ecs.Entity {
         // 广播怪物加载事件，供刷怪与战斗系统联动
         oops.message.dispatchEvent("monster_load", this)
         // 初始化移动参数：方向、目标 X、站位基准 Y
-        const move = this.get(MonMoveComp);
+        const move = this.get(MoveComp);
         move.reset();
         move.direction = -1;
         move.targetX = pos.x;