rohan-prasen/audioreconstruction ? reverse-engineered prompt

Build me a simple app that restores low quality MP3 audio into a cleaner, higher fidelity FLAC file using a pretrained AI model.

I want a local web app where I can upload one song or a whole folder, start the enhancement, and download the reconstructed audio when it is done. It should also have a basic command line way to run the same thing for a single file or a folder. Make the interface clear and easy to use, with progress, status messages, and obvious input and output choices.

If you need to check current docs or best practices for any part of it, go ahead and look them up online. Use the existing project structure where it makes sense, keep the code clean, and make sure it runs locally without too much setup. Include a way to test that the audio processing and file handling work correctly.