Remove TTS narration and improve BGM

src/game/scenes/BattleScene.ts

@@ -25,7 +25,6 @@ export class BattleScene extends Phaser.Scene {
 
   create() {
     const { width, height } = this.scale;
-    soundDirector.stopVoice();
     soundDirector.playMusic('battle-prep');
     this.add.rectangle(0, 0, width, height, 0x0f1418).setOrigin(0);
     this.drawMap();

src/game/scenes/StoryScene.ts

@@ -116,7 +116,6 @@ export class StoryScene extends Phaser.Scene {
 
   private applyPage(page: StoryPage) {
     soundDirector.playMusic(page.bgm);
-    soundDirector.playVoice(page.voice, page.voiceRole ?? page.portrait ?? 'narrator');
     this.applyBackground(page.background);
     this.chapterText?.setText(page.chapter);