🐛 fix(app.js): Affiche l'user agent pour déboguer les tests de performance.

assets/app.js

@@ -261,6 +261,7 @@ async function promptForPermissionAndSubscribe() {
  */
 function isPerformanceTestAgent() {
     const ua = navigator.userAgent;
+    console.error(ua);
     // Vérifie les User Agents connus des outils de performance
     return ua.includes('Lighthouse') || ua.includes('Chrome-Lighthouse') || ua.includes('PageSpeed');
 }