refactor: split sounds.ts into audio/ modules

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/pages/FightPage.vue

@@ -9,7 +9,7 @@ import {
   sfxCrowdCheer, sfxApplause, sfxDrumRoll,
   announceFinishHim, announceFlawlessVictory, announceDeepIntro,
   setMusicIntensity, stopAllAudio, ensureAudioContext, setMasterMute,
-} from '../game/sounds'
+} from '../game/audio'
 
 const route = useRoute()
 const router = useRouter()

frontend/src/pages/JoinBoutPage.vue

@@ -4,7 +4,7 @@ import { useRouter } from 'vue-router'
 import { useNostr } from '../composables/useNostr'
 import { useWallet } from '../composables/useWallet'
 import SpritePreview from '../components/SpritePreview.vue'
-import { ensureAudioContext } from '../game/sounds'
+import { ensureAudioContext } from '../game/audio'
 import HumanPreview from '../components/HumanPreview.vue'
 import WalletConnect from '../components/WalletConnect.vue'
 

frontend/src/pages/SoundboardPage.vue

@@ -1,7 +1,7 @@
 <script setup lang="ts">
 import { ref, computed, onMounted } from 'vue'
 import { getVoiceMap, isKokoroReady, isKokoroLoading } from '../game/tts'
-import { speak, ensureAudioContext } from '../game/sounds'
+import { speak, ensureAudioContext } from '../game/audio'
 
 const voiceMap = getVoiceMap()
 const allProfiles = Object.entries(voiceMap).map(([name, { voice, speed }]) => ({