fix: scopes alerts to user session

src/Controller/IndexController.php

@@ -5,6 +5,7 @@ namespace App\Controller;
 use App\Download\Framework\Repository\DownloadRepository;
 use App\Tmdb\Tmdb;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Attribute\Route;
 
@@ -16,9 +17,10 @@ final class IndexController extends AbstractController
     ) {}
 
     #[Route('/', name: 'app_index')]
-    public function index(): Response
+    public function index(Request $request): Response
     {
-//        dd($this->getUser()->getActiveDownloads());
+        $request->getSession()->set('mercure_alert_topic', 'alerts_' . uniqid());
+
         return $this->render('index/index.html.twig', [
             'active_downloads' => $this->getUser()->getActiveDownloads(),
             'recent_downloads' => $this->getUser()->getDownloads(),