多轮审查和修复

Assets/Scripts/Enemies/AI/BD_IsPlayerVisible.cs

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+#if GRAPH_DESIGNER
+using Opsive.BehaviorDesigner.Runtime.Tasks;
+using Opsive.BehaviorDesigner.Runtime.Tasks.Conditionals;
+using BaseGames.Enemies;
+
+namespace BaseGames.Enemies.AI
+{
+    /// <summary>
+    /// BD Conditional：玩家是否可见（LOS 检测）。
+    /// 读取 EnemyBase._losResult 字段（由 BatchLOSSystem 每帧写入，或降级 3 帧节流 Raycast）。
+    /// </summary>
+    public class BD_IsPlayerVisible : Conditional
+    {
+        private EnemyBase _enemy;
+
+        public override void OnStart()
+        {
+            _enemy = GetComponent<EnemyBase>();
+        }
+
+        public override TaskStatus OnUpdate()
+        {
+            if (_enemy == null) return TaskStatus.Failure;
+            return _enemy.IsPlayerVisible() ? TaskStatus.Success : TaskStatus.Failure;
+        }
+    }
+}
+#endif