Write a rapid prototyping playbook for {{product}} in the {{industry}} industry using {{tech_stack}} within 1 hour, in a {{tone}} tone. Cover: prototype scope (3 core screens, key user flow, wow moment), overview, a minute-by-minute build plan from foundation to demo prep, trade-off decisions for speed, success metrics, common troubleshooting tips, and a v0.2 backlog. Keep under 1800 words. Make every recommendation specific to {{industry}} and {{tech_stack}}. Skip unknown sections rather than inferring. Use plain language accessible to developers unfamiliar with the industry. Ensure the wow moment is clearly defined and feasible within 60 minutes. Paste any relevant background information after these instructions before running.