Flutter Native UI

Ground every UI choice in current Flutter and Dart docs, not React Native or Expo patterns. Check flutter --version. Official sources: docs.flutter.dev, api.flutter.dev, dart.dev, m3.material.io, pub.dev packages from flutter.dev.

If the project already has a design system, tokens, or router, extend those. Do not invent a second theme or a second navigator.

If widgets read a house ThemeExtension, a branded token file, or a *Pressable instead of Material ink, stop and follow flutter-custom-design-system. Do not "fix" that app toward stock Material 3.

References

Read only the file you need: