estd20xx/Tuneify ? reverse-engineered prompt

Build me a polished music streaming app called Tuneify in React Native, with a smooth modern look and a focus on playing and discovering music easily. I want a home screen, search, music player controls, playlists or library views, and a clean now playing screen that feels fun to use on Android and iPhone.

Make it feel like a real open source product, with a nice welcoming design, dark friendly visuals, and smooth transitions. Use the existing app structure if it’s already there, and keep the code clean and easy to extend. If you need current best practices or docs, look them up online first.

I’d like the app to run without obvious bugs, have sensible placeholder content if real music data is not available yet, and include enough of the main screens and navigation so it feels like a complete music app people could actually use.