android/uamp ? reverse-engineered prompt

Build me an Android music player sample app in Kotlin that lets users browse albums and songs, then play audio with a clean now playing screen.

I want it to feel like one app that works well across phones, tablets, Android Auto, Android Wear, Android TV, Google Cast, and with Google Assistant, so the experience stays consistent on different devices. Please include a simple library browsing flow, playback controls, and the basics needed for background audio playback and media notifications.

Use the sample music idea from the README, and make the app easy to run from Android Studio with the normal Gradle build. If you need to check current Android docs for anything that has changed, go ahead and look them up online.

Keep the UI polished but simple, and make sure the app can actually build and launch without extra setup.