import 'dart:io'; import 'package:flutter/material.dart'; import 'custom_title_bar.dart'; class AppShell extends StatelessWidget { final Widget child; const AppShell({super.key, required this.child}); @override Widget build(BuildContext context) { if (!Platform.isWindows) return child; return Column( children: [ const CustomTitleBar(), Expanded(child: child), ], ); } }