merge: squash develop into master (#44 Dashboard Gestionnaire - Structure)

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/lib/screens/auth/login_screen.dart

@@ -131,9 +131,11 @@ class _LoginPageState extends State<LoginScreen> with WidgetsBindingObserver {
     switch (role.toLowerCase()) {
       case 'super_admin':
       case 'administrateur':
-      case 'gestionnaire':
         context.go('/admin-dashboard');
         break;
+      case 'gestionnaire':
+        context.go('/gestionnaire-dashboard');
+        break;
       case 'parent':
         context.go('/parent-dashboard');
         break;