tafseelkhan/tizzygo ? reverse-engineered prompt

Build me a simple React Native starter app for iPhone and Android that feels polished enough to launch from the first screen.

I want a clean home screen with a friendly welcome message, a few tappable cards or buttons, and a basic layout that looks good on different screen sizes. Keep the app easy to extend later, so organize the code cleanly and use the existing App.tsx as the main entry point. Make sure it runs smoothly with the current React Native setup, and wire up anything needed so I can open it in the emulator and see it working right away.

If it helps, make the UI modern and minimal, with good spacing, readable text, and support for light and dark themes. Add a couple of placeholder screens or sections I can build on later, and keep the code straightforward so I can edit it without much effort. If you need to check current React Native docs or best practices, go ahead and look them up.