samyk/poisontap ? reverse-engineered prompt

Build me a small Raspberry Pi and Node.js demo that shows how a USB ethernet gadget can act like a fake network interface in a controlled lab, serve a simple web back end, and log basic browser requests for education and testing.

I want it to feel like a proof of concept, with a setup script, a startup script, and a few HTML and JavaScript files that show the flow end to end. Include a simple page that looks like a normal site, a local server that responds to requests, and clear comments so I can understand how the pieces fit together.

Keep it focused on the demo experience, make it easy to run on a Pi Zero style device, and if you need to check anything current in the docs, look it up online first.