feat: playback bar component, save system improvements, demo and roadmap updates

engine/core/Engine.ts

@@ -25,11 +25,16 @@ export class Engine {
   private justCameFromImage = false
   private loopActive = false
   private onUnlockChapter: ((chapterId: string) => void) | null = null
+  private onMarkWatched: ((sceneId: string) => void) | null = null
 
   setChapterUnlockHandler(handler: (chapterId: string) => void) {
     this.onUnlockChapter = handler
   }
 
+  setMarkWatchedHandler(handler: (sceneId: string) => void) {
+    this.onMarkWatched = handler
+  }
+
   constructor() {
     this.sceneManager = new SceneManager()
     this.videoManager = new VideoManager()
@@ -277,6 +282,8 @@ export class Engine {
   }
 
   private onVideoEnd(scene: SceneNode) {
+    this.onMarkWatched?.(scene.id)
+
     if (this.loopActive) return
 
     const validChoices = this.getValidChoices(scene)
@@ -348,6 +355,13 @@ export class Engine {
     this.emit('gameEnd')
   }
 
+  skipCurrentScene() {
+    const scene = this.currentScene
+    if (!scene) return
+    this.videoManager.getActiveVideoElement()?.pause()
+    this.onVideoEnd(scene)
+  }
+
   startChapter(chapterId: string) {
     const chapter = this.sceneManager.getChapter(chapterId)
     if (!chapter) return