优化技能CD时间

unity/Assets/eco/EchoSystem.cs

@@ -52,7 +52,7 @@ namespace IndianOceanAssets.Engine2_5D
 
         [Header("冷却")]
         [Tooltip("回声冷却时间（秒）")]
-        [SerializeField] private float cooldown = 2f;
+        [SerializeField] private float cooldown = 3f;
 
         // 全局 shader 属性 ID（通过 Shader.SetGlobalX 设置，所有描边精灵共享）
         private static readonly int EchoCenterID           = Shader.PropertyToID("_EchoCenter");

unity/Assets/eco/SpiritLanternSystem.cs

@@ -22,7 +22,7 @@ namespace IndianOceanAssets.Engine2_5D
 
         [Header("冷却")]
         [Tooltip("放置灵灯的冷却时间（秒）")]
-        [SerializeField] private float cooldown = 3f;
+        [SerializeField] private float cooldown = 5f;
 
         [Header("灵灯预制体")]
         [SerializeField] private GameObject lanternPrefab;