akkishinde/OpenCartAndroid ? reverse-engineered prompt

Build me an Android shopping app for an OpenCart store, with a clean modern look and simple browsing flow.

I want users to be able to open the app, see products, browse categories, view product details, and add items to a cart. Please include basic account and shopping features like login, cart, checkout, and order handling if it fits the existing app. Make it feel polished and easy to use on a phone.

Use the current project structure and make it compile and run cleanly in Android Studio. If anything is missing, look up the current OpenCart and Android docs online and fill in the gaps in a sensible way. Keep the code organized and make sure the app is ready for a real store backend, not just a static demo.