```

feat(gameplay): 更新单位属性和材质配置

- 调整多个单位的基础生命值和攻击力数值平衡
- 修改CoreBattleGround材质的纹理缩放比例
- 更新地砖材质颜色为白色
- 优化纹理资源设置，调整最大纹理尺寸并添加PlayableAds平台支持
- 修复弓箭手技能目标查找逻辑，改用统一的敌人检测方法
- 为水晶矿添加中立阵营设置和光球视觉效果同步
- 调整预制体中的全局缩放参数
- 为狼人和石巨人添加NavMeshAgent组件支持
- 优化水晶矿血条显示位置计算方式
```

Assets/Script/ArcherHunterSkill.cs

@@ -19,18 +19,22 @@ public class ArcherHunterSkill : UnitSkill
 
     private GameObject FindNearbyOpponent(GameObject mainTarget)
     {
-        string opponentTag = unit.OpponentTag;
-        if (string.IsNullOrEmpty(opponentTag))
+        UnitTeam myTeam = unit.GetComponent<UnitTeam>();
+        if (myTeam == null)
         {
             return null;
         }
 
         GameObject nearbyOpponent = null;
         float nearestSqrDistance = splitShotRadius * splitShotRadius;
-        GameObject[] opponents = GameObject.FindGameObjectsWithTag(opponentTag);
-        foreach (GameObject opponent in opponents)
+        foreach (UnitTeam opponentTeam in GameObject.FindObjectsOfType<UnitTeam>())
         {
-            if (opponent == mainTarget || opponent == unit.gameObject || opponent.transform.root == unit.transform.root)
+            GameObject opponent = opponentTeam.gameObject;
+            if (opponent == null
+                || opponent == mainTarget
+                || opponent == unit.gameObject
+                || opponent.transform.root == unit.transform.root
+                || !myTeam.IsEnemy(opponent))
             {
                 continue;
             }