Ad and purchases enabled (still need actual testing)

lib/main.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
 import 'screens/main_shell.dart';
+import 'screens/user_agreement_screen.dart';
 import 'services/app_state.dart';
 import 'theme/app_theme.dart';
 
@@ -67,6 +68,9 @@ class AppRoot extends StatelessWidget {
             ),
           );
         }
+        if (!appState.hasAcceptedUserAgreement) {
+          return const UserAgreementScreen();
+        }
         return const MainShell();
       },
     );