I need a lean, cross-platform e-commerce solution that covers three touchpoints: a responsive web storefront plus companion apps for both iOS and Android. Core scope (keep it simple and MVP-friendly): • User accounts and profiles with basic sign-up, login, password reset, and profile edit screens. • Payment gateway integration that supports major cards and UPI so customers can complete checkout end-to-end in one flow. • Product reviews and ratings displayed on each item page, with a lightweight moderation panel. A clean admin dashboard for product, order, and user management is required, but it can be a starter template rather than a fully polished back office. I’m open to frameworks like React / React Native, Flutter, or any modern stack that speeds up delivery and keeps maintenance straightforward. Deliverables: 1. Working web MVP deployed to a test URL. 2. iOS and Android builds suitable for TestFlight / APK testing. 3. Source code with clear setup instructions. 4. Brief handoff document outlining how to add products, process orders, and configure the payment gateway. Focus on functionality over fancy visuals—I can iterate on the UI later. If you have a reusable template or starter project that fits these requirements, even better.