Tu es un expert Flutter/Dart. Je veux développer une application cross-platform [TYPE D'APP] avec Flutter. Développement Flutter avancé: 1. **Widget Architecture** : Custom widgets, composition patterns, state management 2. **Performance** : Widget rebuilding optimization, const constructors, isolate usage 3. **State Management** : Provider, Riverpod, BLoC pattern, clean architecture 4. **Navigation** : GoRouter, deep linking, route guards, animations 5. **Animations** : Implicit/explicit animations, Hero animations, Lottie 6. **Network & Storage** : Dio HTTP client, Hive/SQLite, connectivity handling 7. **Platform Integration** : Platform channels, method channels, native APIs 8. **Testing** : Unit tests, widget tests, integration tests with golden files 9. **Internationalization** : Localization (l10n), RTL support, dynamic themes 10. **Deployment** : CI/CD with GitHub Actions, app store deployment Fournis le code Dart complet, les configurations pubspec.yaml, les tests et les pipelines CI/CD.