feat: Implement Room Streaming System

- Add RoomStreamingManager to manage room loading and unloading based on player proximity.
- Create StreamingBudgetConfigSO for memory and performance budgeting of the streaming system.
- Introduce TransitionDirector to handle seamless and atmospheric fade transitions between rooms.
- Develop WorldGraph to represent room connectivity and facilitate neighbor queries and distance calculations.
- Implement RoomNode and RoomEdge classes to structure room data and connections.

Assets/_Game/Scripts/Enemies/Perception/IPerceptionSystem.cs

@@ -0,0 +1,23 @@
+using UnityEngine;
+
+namespace BaseGames.Enemies.Perception
+{
+    /// <summary>
+    /// 敌人感知系统接口。
+    /// EnemyBase 通过此接口与感知实现解耦，支持运行时替换（SensorToolkit / 自定义实现）。
+    /// </summary>
+    public interface IPerceptionSystem
+    {
+        /// <summary>指定槽位是否检测到任意目标。</summary>
+        bool HasAnyDetection(string slotName);
+
+        /// <summary>指定槽位是否正在检测 target 对象。</summary>
+        bool IsDetecting(string slotName, GameObject target);
+
+        /// <summary>返回指定槽位第一个检测到的对象，无检测则返回 null。</summary>
+        GameObject GetFirstDetection(string slotName);
+
+        /// <summary>暂停或恢复感知系统（LOD / 超出活跃范围时调用）。</summary>
+        void SetSuspended(bool suspended);
+    }
+}