I need an Android-only social networking app built from scratch, complete with a clean material-design interface, user authentication, profile creation, real-time posting, and a basic messaging feed. The core deliverable is a fully functional APK plus readable, well-commented source code that compiles without errors in Android Studio. Please include: • A concise architecture overview (language, libraries, backend choices). • Working prototype APK for iterative testing on physical devices running Android 10+. • Final release build, signed and ready for Play Store submission. Code must follow current Android best practices (Kotlin preferred, Jetpack components, MVVM or similar pattern). I’ll supply my branding assets, colour palette, and any required copy once development starts. Regular progress updates and a short hand-off walkthrough will round out the engagement.