I need an Android-only e-commerce app built from the ground up. The core goal is to let users browse products, add them to a cart, and complete secure in-app payments. Key needs • Modern Android UI that matches our brand palette (assets provided after hire). • Product catalogue with search, category filters, and basic inventory sync via a REST API. • Shopping cart, checkout flow, and integration with at least one popular payment gateway (Midtrans, Xendit, or Stripe—whichever you can set up fastest). • Secure customer accounts with email or Google sign-in, order history, and push notifications for order status. • Basic admin endpoints already exist; you’ll connect the app to them and document any additional endpoints you require. • Clean, well-commented Kotlin code, ready for Play Store submission. Please include in your reply: 1. A brief outline of your approach and preferred Android architecture (e.g., MVVM with Jetpack libraries). 2. Examples of live Android commerce apps you’ve delivered. 3. Estimated timeline for a working prototype and final release. I’ll handle store listing assets and copy once the APK is ready; you just focus on the functional, tested app.