music-assistant/mobile-app ? reverse-engineered prompt

Build me a cross platform mobile app for Music Assistant that works on both Android and iPhone with one shared codebase. I want it to connect to a Music Assistant server, let me browse my music library, search across everything, manage queues, control playback, and move playback between players or group players together. The app should have a clean settings area for server connection and login, plus a built in local player on the phone so I can listen right on the device.

On Android, include background playback, a media notification, Android Auto support, and voice playback through Google Assistant. On iPhone, include native playback, lock screen and Control Center controls, background audio, and CarPlay support for the local player. Make it feel fast and simple to use, especially for seeing what is playing, skipping tracks, and jumping to settings or search. If you need to check current docs or platform details, look them up online first.