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/Abilities/EnemyAttackSO.cs

@@ -0,0 +1,48 @@
+namespace BaseGames.Enemies.Abilities
+{
+    /// <summary>
+    /// 单段攻击数据（架构 07_EnemyModule §8.1）。
+    /// 描述"一次攻击"的所有要素：动画、HitBox 时机、伤害源、可选射弹。
+    /// EnemyAbilitySO.attackSequence 按顺序组合多段为完整能力。
+    /// </summary>
+    [UnityEngine.CreateAssetMenu(menuName = "BaseGames/Enemies/Enemy Attack", fileName = "EATK_")]
+    public class EnemyAttackSO : UnityEngine.ScriptableObject
+    {
+        [UnityEngine.Header("标识（仅调试用）")]
+        public string attackName = "Attack";
+
+        [UnityEngine.Header("动画")]
+        [UnityEngine.Tooltip("动画片段。若为空则跳过动画，按 fallbackDuration 推进。")]
+        public Animancer.ClipTransition clip;
+        [UnityEngine.Tooltip("clip 为空时本段总时长（秒）")]
+        public float fallbackDuration = 0.6f;
+
+        [UnityEngine.Header("HitBox 时机（归一化 0-1，相对动画长度）")]
+        [UnityEngine.Tooltip("HitBox 槽位名（在 MeleeAttackAbility 的 hitBoxSlots 中索引），为空表示无近战 HitBox")]
+        public string hitBoxSlot = "";
+        [UnityEngine.Range(0f, 1f)] public float hitBoxEnterT = 0.30f;
+        [UnityEngine.Range(0f, 1f)] public float hitBoxExitT  = 0.55f;
+
+        [UnityEngine.Header("伤害源")]
+        public BaseGames.Combat.DamageSourceSO damageSource;
+
+        [UnityEngine.Header("射弹（远程能力使用）")]
+        public BaseGames.Combat.ProjectileConfigSO projectileConfig;
+        [UnityEngine.Min(1)] public int projectileCount = 1;
+        [UnityEngine.Range(0f, 180f)] public float spreadAngleDeg = 0f;
+        [UnityEngine.Tooltip("射弹生成时机（归一化）")]
+        [UnityEngine.Range(0f, 1f)] public float projectileFireT = 0.40f;
+
+        [UnityEngine.Header("段间衔接")]
+        [UnityEngine.Tooltip("本段结束后到下一段开始的延迟（秒）")]
+        public float postDelay = 0f;
+        [UnityEngine.Tooltip("本段是否锁定移动（设速度为0）")]
+        public bool lockMovement = true;
+
+        [UnityEngine.Header("可选霸体窗口")]
+        public bool                  hasPoiseWindow = false;
+        public BaseGames.Combat.PoiseLevel poiseLevel = BaseGames.Combat.PoiseLevel.Light;
+        [UnityEngine.Range(0f, 1f)] public float poiseStartT = 0.10f;
+        [UnityEngine.Range(0f, 1f)] public float poiseEndT   = 0.55f;
+    }
+}