fix: resolve architecture disconnects and codebase weaknesses

- fix(backend): replace raw .parse() with proper loadConfig() + ConfigError
- fix(gateway): connect voice recording uploader to EventBroadcaster
- fix(gateway): remove dead globalThis.moderationBroadcaster path in AI analyzer
- fix(gateway): eliminate audioStream race condition by attaching handlers before pipe
- fix(gateway): enable inlineVolume by default for setMusicVolume to work
- fix(gateway): reuse persistent redisPub for command replies (no new connection per cmd)
- fix(frontend): add missing voice_active_user/voice_pcm_data to WsEventMap
- fix(frontend): correct onAttachmentUploaded handler signature to accept data
- chore: move @types/pg from dependencies to devDependencies
- chore: translate remaining Indonesian comments to English
- chore: remove stale P3 TODO comment

services/backend/package.json

@@ -16,7 +16,6 @@
   "dependencies": {
     "@bete/shared": "workspace:*",
     "@discordjs/voice": "^0.19.2",
-    "@types/pg": "^8.20.0",
     "axios": "^1.16.1",
     "dotenv": "^17.4.2",
     "drizzle-orm": "^0.45.2",
@@ -37,6 +36,7 @@
     "@types/ws": "^8.18.1",
     "tsx": "^4.22.2",
     "typescript": "^5.9.3",
+    "@types/pg": "^8.20.0",
     "vitest": "latest"
   }
 }