Added few functions

components/DashboardLayout.tsx

@@ -3,6 +3,7 @@
 import { useRouter, usePathname } from 'next/navigation';
 import { useState } from 'react';
 import Image from 'next/image';
+import { useBodyScrollLock } from '@/lib/body-scroll-lock';
 import Link from 'next/link';
 import useSWR from 'swr';
 
@@ -34,6 +35,7 @@ export default function DashboardLayout({ user, children }: DashboardLayoutProps
   const [showNotifications, setShowNotifications] = useState(false);
   const [showProfileMenu, setShowProfileMenu] = useState(false);
   const [sidebarOpen, setSidebarOpen] = useState(false);
+  useBodyScrollLock(sidebarOpen);
 
   // Récupérer les conversations pour compter les messages non lus
   const { data: conversations } = useSWR<Array<{ unreadCount: number }>>(