hatim85/Sportsync ? reverse-engineered prompt

Build me a sports shopping app with a modern storefront and a simple admin side, so people can browse products, sign in, add items to cart, place orders, and track returns.

I want the front end to feel clean and easy to shop on, with product listings, product details, cart, checkout, and account pages. The back end should handle users, products, orders, payments, and basic admin actions for managing inventory and orders. Use a database to store everything, and make sure the app can run locally with separate frontend and backend servers.

Please wire up the environment setup so I can start both parts easily, and include the usual auth flow, order flow, and payment flow. If you need to check the latest docs for anything, go ahead and look them up online. Also make sure the app is ready for real world use, with sensible error handling and a simple structure that is easy to extend later.