flutter-to-rn-migration

End-to-end procedure for porting any Flutter/Dart file from the poc_vedaxl app into this React Native monorepo (models, repositories, services, state, widgets, screens, navigation, l10n). Use it whenever you start, continue or review the port of a `lib/**/*.dart` file, when you're asked "port X", "convert this Dart file", "where does <dart file> go", or when you need the Flutter→RN concept mapping (widgets, ChangeNotifier, FutureBuilder, Navigator, ThemeData, sheets, animations, CustomPainter, ARB). For a single screen use flutter-screen-to-rn; for models/repositories use dart-model-to-ts; for tests use flutter-test-to-jest.