igor721/my-app ? reverse-engineered prompt

Build me a clean Expo mobile app starter that feels polished right away. I want a simple home screen with a friendly welcome message, a few reusable UI pieces, and easy navigation between a couple of basic screens so I can start adding real features later.

Please make it look modern and usable, with good spacing, clear text, and a nice visual style on both light and dark mode if that’s easy. Keep the code organized in the existing app structure, use reusable components where it makes sense, and set things up so it’s easy to extend without a lot of cleanup.

If you need to, look up the current Expo docs online so you use the right approach. Also make sure it runs cleanly with the existing project setup and give me something I can open and use right away.