Mayank-Narang/wesee ? reverse-engineered prompt

Build me a small browser based app called we see that plays around with a wav file and shows something visual on the page so I can understand what I am hearing. I want it to feel simple and lightweight, with the main logic in a clean source folder and a single entry point that starts everything up.

If it helps, make it easy to test with the sample wav file that is already in the project, and include a couple of small helper scripts for toggling or redrawing the display. Keep the UI basic but polished, with clear controls and a visible state change when the sound or visual updates.

If you need to check current docs for any browser or audio details, look them up online. Please make sure it runs cleanly, has sensible defaults, and the code is easy to understand and extend later.