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_CanUseBossSkill.cs

@@ -0,0 +1,41 @@
+#if GRAPH_DESIGNER
+using Opsive.BehaviorDesigner.Runtime.Tasks;
+using Opsive.BehaviorDesigner.Runtime.Tasks.Conditionals;
+using UnityEngine;
+using BaseGames.Boss;
+
+namespace BaseGames.Enemies.AI
+{
+    /// <summary>
+    /// BD Conditional：检查 Boss 技能是否冷却就绪。
+    /// 支持拖拽 BossSkillSO 或直接填写 skillId 字符串（SO 优先）。
+    /// </summary>
+    [TaskName("Can Use Boss Skill?")]
+    [TaskCategory("BaseGames/Enemy/Boss")]
+    [TaskDescription("检查指定 Boss 技能是否在当前阶段可用且冷却就绪")]
+    public class BD_CanUseBossSkill : Conditional
+    {
+        [SerializeField] private BossSkillSO m_SkillSO;
+        [SerializeField] private string      m_SkillId;
+
+        private BossBase          _boss;
+        private BossSkillExecutor _executor;
+
+        public override void OnAwake()
+        {
+            _boss     = GetComponent<BossBase>();
+            _executor = GetComponentInChildren<BossSkillExecutor>();
+        }
+
+        public override TaskStatus OnUpdate()
+        {
+            if (_executor == null) return TaskStatus.Failure;
+
+            string id = m_SkillSO != null ? m_SkillSO.skillId : m_SkillId;
+            if (string.IsNullOrEmpty(id)) return TaskStatus.Failure;
+
+            return _executor.CanUseSkill(id) ? TaskStatus.Success : TaskStatus.Failure;
+        }
+    }
+}
+#endif