Build a clickable prototype of {{product_idea}} that I can demo to {{demo_audience}}. The demo should walk through this story: {{demo_story}} Rules for the prototype: - Focus on the main path through that story, plus one realistic empty or error state - Use mock data from a local file, with names, currencies, and numbers that feel believable for {{target_market}} - No real payments, emails, or third-party accounts; simulate them and label them as simulated on screen - Fast, responsive, and polished enough that the interface doesn't distract from the idea - A small reset button so every demo starts from the same state When it's done, write a short README listing what is real, what is mocked, and the three things to build next if the demo goes well.