import 'package:flutter/foundation.dart'; class AppConfig { const AppConfig._(); static const apiBaseUrl = String.fromEnvironment('API_BASE_URL'); static bool get unconfigured => kDebugMode && apiBaseUrl.isEmpty; static const setupHint = 'No API_BASE_URL set. For local development run with ' '--dart-define-from-file=.env (copy .env.example to .env first).'; }