ivan125126/light_light_light — reverse-engineered prompt

Build me a simple working version of this light project from the existing repo. There isn’t much documentation, so please inspect the folders and figure out how the JavaScript side and the core PCB files are meant to fit together.

I want something I can open locally that explains the project in plain English, shows light or lux data if the code already supports it, and gives me a clean basic interface for checking whether the light hardware or simulator is working. If real hardware is needed, add a mock mode so I can still see changing brightness values and test the UI without plugging anything in.

Keep it simple and reliable, with clear setup steps, sensible defaults, and a short README that tells me how to run it, what the PCB folder is for, and what parts are still placeholders. Look up current docs online if you need to.