I want a complete Android-only social networking app built from the ground up and, just as important, I want to understand every step that goes into creating it. Your role will be two-fold: first, deliver a fully functional APK (plus clean, well-commented source code); second, walk me through your architecture, toolchain, and deployment process so I can replicate or extend the project later. Core expectations • Native Android build (Kotlin or Java with Android Studio). • Standard social features—user registration/login, profile editing, posts with images/video, likes/comments, and real-time notifications. • Secure back-end (Firebase, Supabase, or a lightweight REST API with SQL) and cloud storage for media. • Clear documentation: project setup, key code sections, and build/submit steps for Google Play. • A live demonstration on an emulator or device and a Q&A session so I can ask “how did you build this?” and get practical, hands-on guidance. Please outline your proposed tech stack, any reusable libraries you plan to integrate (e.g., Jetpack Compose, Glide, Firebase Auth), and a rough milestone schedule so I know when I can start testing features.