vxrunhh/YAPORA ? reverse-engineered prompt

Build me an Android chat app called YAPORA with a fun cat themed look and a dark purple style.

I want people to be able to join as a guest, jump into one public room, and send short text messages or pick from a set of built in memes. Messages should update in real time, feel smooth and modern, and disappear after about an hour so the chat stays fresh. Make it work with Firebase for sign in and the shared chat data, and use a clean Material 3 style with Jetpack Compose. Also add a simple update flow so the app can check for new releases and make sure downloads are verified before installing. Keep the experience friendly, playful, and easy to use, with the branding centered around the YAPORA cat theme. If you need to look up current docs online for anything, go ahead.