apache/incubator-weex ? reverse-engineered prompt

Build me a working mobile cross platform UI framework project like Weex, with a simple playground app I can run on both Android and iPhone.

I want a clean demo that shows how to render the same UI on both platforms, with a few example screens, basic navigation, and a simple way to swap data in and see the UI update. Please make it easy to open in Android Studio and Xcode, and include the setup steps so I can get it running without guessing.

If anything in the repo needs current build steps or newer docs, look them up online and follow the latest guidance. Keep the result practical, so I can launch the sample app, test the UI, and understand how to use the framework from there.