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/discord-gateway/src/modules/command-handler/commandHandler.ts

@@ -178,12 +178,11 @@ export class CommandHandler {
       };
     }
 
-    // Publish reply on the designated reply channel.
-    const redisPub = new Redis(config.REDIS_URL);
+    // Publish reply on the designated reply channel using the persistent publisher.
     try {
-      await redisPub.publish(cmd.replyChannel, JSON.stringify(reply));
-    } finally {
-      await redisPub.quit();
+      await this.redisPub.publish(cmd.replyChannel, JSON.stringify(reply));
+    } catch (err) {
+      logger.error({ err }, "Failed to publish command reply");
     }
 
     // Always refresh status keys after every command so the backend has