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/AI/BD_SetState.cs

@@ -0,0 +1,45 @@
+#if GRAPH_DESIGNER
+using UnityEngine;
+using Opsive.BehaviorDesigner.Runtime.Tasks;
+using Opsive.BehaviorDesigner.Runtime.Tasks.Actions;
+using BaseGames.Enemies;
+using BaseGames.Enemies.Abilities;
+
+namespace BaseGames.Enemies.AI
+{
+    /// <summary>
+    /// BD Action：强制切换敌人到指定 EnemyStateType，并中断所有正在执行的能力。
+    /// 单帧完成，立即返回 Success。
+    ///
+    /// 典型用法：
+    ///   - 进入 Stagger 状态后重置为 Idle（替代手动停止动画）
+    ///   - 技能打断后显式回到 Controlled 状态
+    /// </summary>
+    [TaskName("Set State")]
+    [TaskCategory("BaseGames/Enemy/State")]
+    [TaskDescription("强制切换敌人物理/战斗状态（ForceState）")]
+    public class BD_SetState : Action
+    {
+        [Tooltip("切换到的目标状态")]
+        [SerializeField] private EnemyStateType m_TargetState = EnemyStateType.Controlled;
+
+        [Tooltip("切换状态时同时中断所有正在执行的能力")]
+        [SerializeField] private bool m_InterruptAbilities = true;
+
+        private EnemyBase _enemy;
+
+        public override void OnAwake() => _enemy = GetComponent<EnemyBase>();
+
+        public override TaskStatus OnUpdate()
+        {
+            if (_enemy == null) return TaskStatus.Failure;
+
+            if (m_InterruptAbilities)
+                _enemy.Abilities?.InterruptAll(InterruptReason.ExternalRequest);
+
+            _enemy.ForceState(m_TargetState);
+            return TaskStatus.Success;
+        }
+    }
+}
+#endif