rupeshkapgate-pixel/system-audio-recorder ? reverse-engineered prompt

Build me a Windows desktop app that records whatever audio is playing on the computer and saves it as an MP3 when I stop recording.

I want it to feel like a simple clean recorder app, with a Start Recording button, a Stop Recording button, and clear status feedback so I always know whether it’s idle, recording, or saving. When I stop, it should automatically finish the file and save it locally without needing any extra setup like virtual audio cables, Stereo Mix, FFmpeg, or a cloud account.

Use a modern desktop app approach with a React based interface and Rust for the audio capture and saving part. Make it work on Windows 10 and 11, and if you need to check anything current in the docs, look it up online. Keep the experience straightforward, polished, and ready to run as a standalone installer.