Frontend first draft

frontend/pweb/lib/providers/two_factor.dart

@@ -0,0 +1,38 @@
+import 'package:flutter/material.dart';
+
+import 'package:pweb/services/auth.dart';
+
+
+class TwoFactorProvider extends ChangeNotifier {
+  final AuthenticationService _authService;
+
+  TwoFactorProvider(this._authService);
+
+  bool _isSubmitting = false;
+  bool _hasError = false;
+  bool _verificationSuccess = false;
+
+  bool get isSubmitting => _isSubmitting;
+  bool get hasError => _hasError;
+  bool get verificationSuccess => _verificationSuccess;
+
+
+  Future<void> submitCode(String code) async {
+    _isSubmitting = true;
+    _hasError = false;
+    _verificationSuccess = false;
+    notifyListeners(); 
+
+    try {
+      final success = await _authService.verifyTwoFactorCode(code);
+      if (success) {
+        _verificationSuccess = true;
+      }
+    } catch (e) {
+      _hasError = true;
+    } finally {
+      _isSubmitting = false;
+      notifyListeners();
+    }
+  }
+}