J'ajoute tout ce que cursor a oublié...

frontend/lib/navigation/app_router.dart

@@ -1,12 +1,11 @@
 import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
 import '../screens/auth/login_screen.dart';
-import '../screens/auth/register_screen.dart';
 import '../screens/auth/parent_register_screen.dart';
 import '../screens/home/home_screen.dart';
 
 class AppRouter {
   static const String login = '/login';
-  static const String register = '/register';
   static const String parentRegister = '/parent-register';
   static const String home = '/home';
 
@@ -14,8 +13,6 @@ class AppRouter {
     switch (settings.name) {
       case login:
         return MaterialPageRoute(builder: (_) => const LoginScreen());
-      case register:
-        return MaterialPageRoute(builder: (_) => const RegisterScreen());
       case parentRegister:
         return MaterialPageRoute(builder: (_) => const ParentRegisterScreen());
       case home: