feat(ai): 敌人感知↔状态模型——待机/警觉/追击/巡逻 + 可复用感知状态机

感知门面 EnemyBase.InChaseZone(追逐/aggro)/InVisionZone(视野/los,缺省回退aggro),纯查询;
转换逻辑归 AI 层: 新增可复用 PerceptionStateMachine(统一规则,HasAlert/视野缺省自动降级);
规则: 未发现进视野→警觉, 进追逐→追击(委托能力), 追击脱离视野→巡逻(永不回警觉,再进视野再警觉).
EnemyStatsSO.HasAlertState 勾选项; ContactChaseAbility 改纯执行器(退出由AI中断); E001 用可复用件.
PlayMode 验证四态转换全通过.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Assets/_Game/Scripts/Enemies/EnemyBase.cs

@@ -297,6 +297,26 @@ namespace BaseGames.Enemies
         public virtual bool IsPlayerVisible()
             => _threatAssessor != null ? _threatAssessor.IsThreatDetected : HasLineOfSight;
 
+        /// <summary>追逐感知：玩家是否在"追逐触发圆"(aggro 槽)内 → 触发追击。感知系统只回答"在不在"，状态转换归 AI。</summary>
+        public bool InChaseZone()
+            => _sensorHub != null && _playerTransform != null &&
+               _sensorHub.IsDetecting(Perception.SensorSlotNames.Aggro, _playerTransform.gameObject);
+
+        /// <summary>
+        /// 视野感知：玩家是否在视野(los/sight 槽)内。用于警觉升级与追击维持；
+        /// 无视野槽时回退用追逐感知(aggro)。感知系统只回答"在不在"，状态转换归 AI。
+        /// </summary>
+        public bool InVisionZone()
+        {
+            if (_sensorHub == null || _playerTransform == null) return false;
+            bool hasVisionSlot = _sensorHub.HasSlot(Perception.SensorSlotNames.LOS)
+                              || _sensorHub.HasSlot(Perception.SensorSlotNames.Sight);
+            if (!hasVisionSlot) return InChaseZone(); // 缺省回退到追逐感知
+            var go = _playerTransform.gameObject;
+            return _sensorHub.IsDetecting(Perception.SensorSlotNames.LOS, go)
+                || _sensorHub.IsDetecting(Perception.SensorSlotNames.Sight, go);
+        }
+
         public virtual void FacePlayer()
         {
             if (_movement == null || _playerTransform == null) return;