feat: P15 ending gallery, chapter recap, visited tracking, save system v6

engine/core/Engine.ts

@@ -28,6 +28,7 @@ export class Engine {
   private loopActive = false
   private onUnlockChapter: ((chapterId: string) => void) | null = null
   private onMarkWatched: ((sceneId: string) => void) | null = null
+  private onMarkVisited: ((sceneId: string) => void) | null = null
 
   setChapterUnlockHandler(handler: (chapterId: string) => void) {
     this.onUnlockChapter = handler
@@ -37,6 +38,10 @@ export class Engine {
     this.onMarkWatched = handler
   }
 
+  setMarkVisitedHandler(handler: (sceneId: string) => void) {
+    this.onMarkVisited = handler
+  }
+
   constructor() {
     this.sceneManager = new SceneManager()
     this.videoManager = new VideoManager()
@@ -74,40 +79,16 @@ export class Engine {
   }
 
   private goToScene(scene: SceneNode) {
+    this.currentScene = scene
+
     const chapter = this.sceneManager.getChapterBySceneId(scene.id)
     if (chapter) {
       this.onUnlockChapter?.(chapter.id)
       this.emit('chapterUnlock', chapter)
     }
 
-    if (scene.onEnter) {
-      this.stateManager.apply(scene.onEnter)
-    }
+    this.onMarkVisited?.(scene.id)
 
-    if (scene.videoMuted) {
-      this.videoManager.setMuted(true)
-    } else {
-      this.videoManager.setMuted(false)
-    }
-
-    const bgmUrl = scene.bgmUrl || null
-    if (bgmUrl) {
-      this.audioSystem.play(
-        bgmUrl,
-        scene.bgmVolume ?? 0.8,
-        scene.bgmCrossFade ?? 2.0,
-        scene.bgmDuckLevel,
-        scene.bgmDuckFade,
-      )
-    } else {
-      this.audioSystem.stop(scene.bgmCrossFade ?? 2.0)
-    }
-
-    this.enterScene(scene)
-  }
-
-  private enterScene(scene: SceneNode) {
-    this.currentScene = scene
     this.qteTriggered = false
     this.qteResolved = false
     this.loopActive = false
@@ -405,7 +386,7 @@ export class Engine {
 
     this.ended = false
     this.isInitialScene = false
-    this.enterScene(scene)
+    this.goToScene(scene)
   }
 
   destroy() {