fixed several page and teacher page creation

lib/screens/home_page.dart

@@ -37,13 +37,36 @@ class _HomePageState extends State<HomePage> {
 
   late final String zenQuote;
 
+  // Nome caricato da getMe (widget.userFirstName è spesso null,
+  // es. arrivando dallo splash con login persistente).
+  String? _loadedFirstName;
+
   @override
   void initState() {
     super.initState();
     zenQuote = _pickZenQuote();
+    _loadName();
+  }
+
+  Future<void> _loadName() async {
+    try {
+      final me = await VanguardApi.getMe(token: widget.token);
+      final first = (me['first_name'] ?? '').toString().trim();
+      if (!mounted) return;
+      if (first.isNotEmpty) {
+        setState(() => _loadedFirstName = first);
+      }
+    } catch (_) {
+      // silenzioso: se fallisce restiamo su "Ciao" senza nome
+    }
+  }
+
+  String get _name {
+    final loaded = (_loadedFirstName ?? '').trim();
+    if (loaded.isNotEmpty) return loaded;
+    return (widget.userFirstName ?? '').trim();
   }
 
-  String get _name => (widget.userFirstName ?? '').trim();
   String get _avatarLetter => _name.isNotEmpty ? _name[0].toUpperCase() : 'U';
 
   String get _schoolAddress => (widget.school.addressFull ?? '').trim();