feat: 更新存档管理，添加异步存档槽管理功能，优化存档验证逻辑

Assets/_Game/Scripts/Support/Speedrun/SpeedrunTimer.cs

@@ -28,6 +28,16 @@ public class SpeedrunTimer : MonoBehaviour, ISaveable
     /// <summary>上一帧已显示的整秒值，展示内容未变化时跳过字符串重建。</summary>
     private int  _lastDisplayedSecond = -1;
 
+    private void OnEnable()
+    {
+        ServiceLocator.GetOrDefault<ISaveableRegistry>()?.Register(this);
+    }
+
+    private void OnDisable()
+    {
+        ServiceLocator.GetOrDefault<ISaveableRegistry>()?.Unregister(this);
+    }
+
     private void Start()
     {
         bool show = _settings != null && _settings.ShowSpeedrunTimer;