存档重构，游戏内容解锁机制；教程完善（未完成）

Assets/Scripts/Manager/GameManager.cs

@@ -66,6 +66,7 @@ namespace Ichni
             CoreServices.TimeProvider = this;
             timeDurations = new List<TimeDurationSubmodule>();
             playingRecorder = new PlayingRecorder();
+            playingRecorder.Initialize();
             updateScheduler = new ElementUpdateScheduler();
             CoreServices.UpdateScheduler = updateScheduler;
         }
@@ -89,17 +90,47 @@ namespace Ichni
 
     public partial class GameManager
     {
+        /// <summary>
+        /// 将当前演奏结果写入独立的游戏记录存档。
+        /// <para>由 SongPlayer 在实际歌曲结束后、打开 Summary 前调用。</para>
+        /// <para>剧情树、选项和 Yarn 变量仍由 <see cref="StorySaveModule"/> 单独管理。</para>
+        /// 当前 Difficulty 的 Chart Revision 会一并传入，从而在谱面改版时只清除不可比较的单谱面成绩。
+        /// </summary>
+        public bool SaveCurrentPlayRecord()
+        {
+            if (GameSaveManager.instance == null || GameSaveManager.instance.SongSaveModule == null)
+            {
+                Debug.LogWarning("Cannot save play record because SongSaveModule is not initialized.");
+                return false;
+            }
+
+            if (InformationTransistor.instance == null ||
+                InformationTransistor.instance.song == null ||
+                InformationTransistor.instance.difficulty == null)
+            {
+                Debug.LogWarning("Cannot save play record because the selected song or difficulty is missing.");
+                return false;
+            }
+
+            return GameSaveManager.instance.SongSaveModule.RecordPlayResult(
+                InformationTransistor.instance.song.songName,
+                InformationTransistor.instance.difficulty.saveDifficultyId,
+                InformationTransistor.instance.difficulty.GetChartRevision(),
+                playingRecorder);
+        }
+
         public static void RestartGame()
         {
+            // 保留 InformationTransistor 中的歌曲和返回目标，使教程与普通歌曲的重开都回到正确页面。
             SceneManager.LoadScene("GameScene");
             Time.timeScale = 1f; // 确保重启时时间缩放恢复正常
         }
 
         public static void ReturnToMenu()
         {
-            //InformationTransistor.instance.isReturnedFromGame = true;
-            SceneManager.LoadScene("MenuScene");
             Time.timeScale = 1f; // 确保返回时时间缩放恢复正常
+            // 返回目标已在进入 GameScene 时写入 InformationTransistor；这里不再写互斥布尔值。
+            SceneManager.LoadScene("MenuScene");
         }
     }
-}
+}