refactor(EnemyManager): 性能优化与并发安全修复

- EnemyRegistry: 移除List冗余存储, Register/Remove从O(n)→O(1)
- 增加PruneInvalidEntries显式清理接口, 消除TryGet副作用
- Remove增加不存在告警, 防重复减成负数
- 增加CTS取消飞行中的异步生成, 关卡切换时取消+重建
- ClearEnemies先快照再遍历, 防Hide回调修改集合抛异常
- entityId去掉取模复用, 直接自增保证唯一
- Enemy EntityGroup调优: Capacity→10000, ReleaseInterval→30, ExpireTime→120

Assets/GameMain/Scripts/Runtime/CustomComponent/EnemyManager/EnemyRegistry.cs

@@ -6,80 +6,58 @@ namespace SepCore.EnemyManager
 {
     public class EnemyRegistry
     {
-        private readonly List<EntityBase> _enemies;
         private readonly Dictionary<int, EntityBase> _enemyById;
 
-        public int Count { get; private set; }
-        public List<EntityBase> Enemies => _enemies;
+        public int Count => _enemyById.Count;
+        public IReadOnlyCollection<EntityBase> Enemies => _enemyById.Values;
 
         public EnemyRegistry()
         {
-            _enemies = new List<EntityBase>();
             _enemyById = new Dictionary<int, EntityBase>();
         }
 
         public void Register(EnemyBase enemy)
         {
             if (enemy == null) return;
-
-            Count++;
-            RemoveFromCache(enemy.Id);
-            _enemies.Add(enemy);
             _enemyById[enemy.Id] = enemy;
         }
 
         public void Remove(int entityId)
         {
-            if (Count > 0)
+            if (!_enemyById.ContainsKey(entityId))
             {
-                Count--;
+                Debug.LogWarning($"EnemyRegistry: Attempt to remove non-existent entity id={entityId}");
+                return;
             }
 
-            RemoveFromCache(entityId);
+            _enemyById.Remove(entityId);
         }
 
         public bool TryGet(int entityId, out EntityBase enemy)
         {
-            enemy = null;
-            if (!_enemyById.TryGetValue(entityId, out EntityBase cachedEnemy))
+            return _enemyById.TryGetValue(entityId, out enemy);
+        }
+
+        public void PruneInvalidEntries()
+        {
+            var invalidIds = new List<int>();
+            foreach (var kvp in _enemyById)
             {
-                return false;
+                if (kvp.Value == null || !kvp.Value.Available)
+                {
+                    invalidIds.Add(kvp.Key);
+                }
             }
 
-            if (cachedEnemy == null || !cachedEnemy.Available)
+            foreach (int id in invalidIds)
             {
-                _enemyById.Remove(entityId);
-                return false;
+                _enemyById.Remove(id);
             }
-
-            enemy = cachedEnemy;
-            return true;
         }
 
         public void Clear()
         {
-            _enemies.Clear();
             _enemyById.Clear();
-            Count = 0;
-        }
-
-        private void RemoveFromCache(int entityId)
-        {
-            _enemyById.Remove(entityId);
-
-            for (int i = _enemies.Count - 1; i >= 0; i--)
-            {
-                EntityBase cachedEnemy = _enemies[i];
-                if (cachedEnemy == null || cachedEnemy.Id == entityId)
-                {
-                    if (cachedEnemy != null)
-                    {
-                        _enemyById.Remove(cachedEnemy.Id);
-                    }
-
-                    _enemies.RemoveAt(i);
-                }
-            }
         }
     }
 }