I need a straightforward Flutter mobile app that kicks off a new social-networking concept with one core feature: user profiles. Scope • Splash screen, onboarding, and email / Google sign-in. • Create, edit, and view user profiles (avatar, bio, basic contact links). • Clean, modern UI following Flutter’s Material 3 guidelines; responsive across Android and iOS. • Local data persistence and simple cloud sync—Firebase is fine. • Well-structured, commented Dart code plus a brief README so I can build and extend it later. This is an initial concept, so keep it lean: no messaging, photo sharing, or fancy feeds yet—just a solid, working profile module I can demo. Deliver the complete Flutter project folder and a release-ready APK.