refactor(map/hero): 重构英雄位置管理逻辑，移除lane相关字段

重构了英雄分路排位的旧实现，改用硬编码的点位数组管理英雄站位，移除了HeroAttrsComp中的lane和lane_index字段，简化了英雄位置分配、UI面板绑定的逻辑，提升代码可维护性。

assets/script/game/hero/MoveComp.ts

@@ -46,6 +46,8 @@ interface MoveFacConfig {
     retreatBackX: number;
 }
 
+import { MissionHeroCompComp } from "../map/MissionHeroComp";
+
 @ecs.register('MoveSystem')
 export class MoveSystem extends ecs.ComblockSystem implements ecs.ISystemUpdate {
     private readonly heroFrontAnchorX = -200;
@@ -249,20 +251,12 @@ export class MoveSystem extends ecs.ComblockSystem implements ecs.ISystemUpdate
 
         const slotIndex = Math.max(0, allAllies.findIndex(entity => entity === self));
         
-        const lanePriority = [1, 0, 2]; // 中路优先，其次上路，最后下路
-        const laneOffsets = [100, 0, -100];
+        // 优先中前(1) -> 上前(0) -> 下前(2) -> 中后(4) -> 上后(3) -> 下后(5)
+        const slotPriority = [1, 0, 2, 4, 3, 5]; 
+        const posIndex = slotPriority[slotIndex % 6];
+        const pos = MissionHeroCompComp.HERO_POSITIONS[posIndex];
         
-        const col = Math.floor(slotIndex / 3);
-        const laneIdx = lanePriority[slotIndex % 3];
-        
-        // 动态更新英雄位置数据，为战斗面板排序提供依据
-        model.lane = laneIdx;
-        model.lane_index = col;
-        
-        const targetY = BoxSet.GAME_LINE + laneOffsets[laneIdx];
-        const targetX = this.heroFrontAnchorX - col * this.heroAllySpacingX;
-        
-        return { targetX, targetY };
+        return { targetX: pos.x, targetY: pos.y };
     }
 
     private moveToSlot(view: HeroViewComp, move: MoveComp, model: HeroAttrsComp, targetX: number) {