Update API URL to api.ronde.vu and simplify ICE config

- Change API URL from rondevu.xtrdev.workers.dev to api.ronde.vu
- Remove TURN servers, use only Google STUN (eliminate errors)
- Update README with correct API URL

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/App.jsx

@@ -2,23 +2,12 @@ import React, {useState, useEffect} from 'react';
 import {Rondevu} from '@xtr-dev/rondevu-client';
 import toast, {Toaster} from 'react-hot-toast';
 
-const API_URL = 'https://rondevu.xtrdev.workers.dev';
+const API_URL = 'https://api.ronde.vu';
 
 const RTC_CONFIG = {
   iceServers: [
-    {
-      urls: "stun:stun.relay.metered.ca:80",
-    },
-    {
-      urls: "turn:standard.relay.metered.ca:80",
-      username: "e03a51621b4f11ffbed3addd",
-      credential: "QPjJzPau1Ng5S0dq",
-    },
-    {
-      urls: "turn:standard.relay.metered.ca:443",
-      username: "e03a51621b4f11ffbed3addd",
-      credential: "QPjJzPau1Ng5S0dq",
-    },
+    { urls: 'stun:stun.l.google.com:19302' },
+    { urls: 'stun:stun1.l.google.com:19302' }
   ]
 };