heavily simplify server and app content. unify styling

server/utils/webrtcSignaling.js

@@ -1,19 +1,6 @@
-/**
- * WebRTC signaling message handlers.
- * Processes WebSocket messages for WebRTC operations.
- */
-
 import { getLiveSession, updateLiveSession } from './liveSessions.js'
 import { getRouter, createTransport, getTransport } from './mediasoup.js'
 
-/**
- * Handle WebSocket message for WebRTC signaling.
- * @param {string} userId
- * @param {string} sessionId
- * @param {string} type
- * @param {object} data
- * @returns {Promise<object | null>} Response message or null
- */
 export async function handleWebSocketMessage(userId, sessionId, type, data) {
   const session = getLiveSession(sessionId)
   if (!session) {