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/EnemyStatsSO.cs

@@ -1,7 +1,27 @@
+using System;
 using UnityEngine;
 
 namespace BaseGames.Enemies
 {
+    /// <summary>
+    /// 受击分级配置（KnockUp 击飞门槛 & 飞行参数）。
+    /// 挂载在 EnemyStatsSO.HitTiers 中。
+    /// </summary>
+    [Serializable]
+    public struct HitTierConfig
+    {
+        [Tooltip("重击（Stagger）触发伤害阈值；伤害 &gt;= 此值进入 Stagger")]
+        [Min(0)] public int heavyHitThreshold;
+        [Tooltip("击飞（KnockUp）触发伤害阈值；需同时设置 DamageFlags.Launch；0 = 仅依赖 Launch 标志")]
+        [Min(0)] public int launchThreshold;
+        [Tooltip("击飞纵向冲量")]
+        [Min(0f)] public float launchUpForce;
+        [Tooltip("击飞横向冲量（沿受击反方向）")]
+        [Min(0f)] public float launchHorzForce;
+        [Tooltip("无 KnockUp 动画时的状态持续时长（s）")]
+        [Min(0f)] public float knockUpDuration;
+    }
+
     /// <summary>
     /// 敌人属性配置 SO（架构 07_EnemyModule §2）。
     /// </summary>
@@ -9,29 +29,55 @@ namespace BaseGames.Enemies
     public class EnemyStatsSO : ScriptableObject
     {
         [Header("生命")]
-        public int MaxHP = 50;
+        [Min(1)] public int MaxHP = 50;
 
         [Header("防御")]
-        public int Defense = 0;
+        [Min(0)] public int Defense = 0;
 
         [Header("移动")]
-        public float WalkSpeed  = 2f;
-        public float RunSpeed   = 4f;
+        [Min(0f)] public float WalkSpeed  = 2f;
+        [Min(0f)] public float RunSpeed   = 4f;
 
         [Header("战斗")]
-        public int   AttackDamage    = 10;
-        public float AttackRange     = 1.5f;
-        public float AttackCooldown  = 1f;
-        public float DetectRange     = 6f;
+        [Min(0)] public int   AttackDamage    = 10;
+        [Min(0f)] public float AttackRange     = 1.5f;
+        [Min(0f)] public float AttackCooldown  = 1f;
+        [Min(0f)] public float DetectRange     = 6f;
+
+        [Header("追击 & AI 阶段")]
+        [Tooltip("最大追击距离（m）；超出后放弃追击切换搜查阶段")]
+        [Min(0f)] public float MaxChaseDistance    = 15f;
+        [Tooltip("视线丢失判定超时（s）；超过此时长无视线则切换搜查")]
+        [Min(0f)] public float LoseLinkTimeout     = 2f;
+        [Tooltip("Alert 阶段持续时长（s）；短暂警觉动作后进入追击")]
+        [Min(0f)] public float AlertDuration       = 0.6f;
+        [Tooltip("搜查最后可见位置后的等待时长（s）")]
+        [Min(0f)] public float InvestigateDuration = 3f;
+        [Tooltip("归位到达判定半径（m）")]
+        [Min(0.01f)] public float HomeRadius          = 0.5f;
 
         [Header("击退（作为来源时）")]
-        public float KnockbackForce      = 5f;
-        public float HitStunDuration     = 0.3f;
+        [Min(0f)] public float KnockbackForce      = 5f;
+        [Min(0f)] public float HitStunDuration     = 0.3f;
+
+        [Header("受击分级")]
+        [Tooltip("Stagger / KnockUp 伤害阈值及击飞参数")]
+        public HitTierConfig HitTiers;
 
         [Header("视线检测（BatchLOSSystem）")]
         [Tooltip("相对 transform.position 的眼睛偏移量")]
         public Vector2   EyeOffset       = new Vector2(0f, 0.8f);
         [Tooltip("遮挡 LOS 的物理图层")]
         public LayerMask LOSBlockingMask = 1; // Default layer
+
+        [Header("感知角度")]
+        [Tooltip("前向感知扇形半角（度）。0 = 关闭方向检查，按完整圆形感知")]
+        [Range(0f, 180f)]
+        public float DetectAngleDeg = 0f;
+
+        [Header("警戒传播（Group Alert）")]
+        [Tooltip("发现玩家时通知周围同伴进入 Alert 的半径（m）；0 = 关闭")]
+        [Min(0f)]
+        public float AlertBroadcastRadius = 0f;
     }
 }