- Dark / light mode a funcionar no lado do aluno

- Atualização dos ficheiros markdown.

lib/features/dashboard/presentation/pages/teacher_dashboard_page.dart

@@ -71,15 +71,15 @@ class _TeacherDashboardPageState extends State<TeacherDashboardPage> {
   Widget build(BuildContext context) {
     return Scaffold(
       body: Container(
-        decoration: const BoxDecoration(
+        decoration: BoxDecoration(
           gradient: LinearGradient(
             begin: Alignment.topCenter,
             end: Alignment.bottomCenter,
             colors: [
-              Color(0xFF82C9BD),
-              Color(0xFF7BA89C),
-              Color(0xFFF68D2D),
-              Color(0xFFF8F9FA),
+              Theme.of(context).colorScheme.primary,
+              Theme.of(context).colorScheme.primary.withOpacity(0.8),
+              Theme.of(context).colorScheme.secondary,
+              Theme.of(context).colorScheme.background,
             ],
             stops: [0.0, 0.2, 0.6, 1.0],
           ),