What problem does it solve? Design questions about state models, business logic, or UI layouts are hard to settle on paper. This Skill produces throwaway, runnable prototypes that let you and stakeholders feel the answer before committing to real code. ## Core Features & Use Cases - Logic Prototypes: Generate a single self-contained HTML file with free-play buttons and tabbed guided walkthroughs that push a state machine or reducer through edge cases, drivable by non-developers. - UI Prototypes: Generate 3-5 radically different UI variants on one route, switchable via a ?variant= URL param and a floating bottom bar with keyboard navigation. - Capture Workflow: Fold validated decisions into real code while preserving the prototype on a throwaway branch as a primary source. - Use Case: Before implementing a checkout state machine, build a shareable HTML demo so a PM can click through the happy path, edge cases, and illegal transitions and confirm the model feels right. ## Quick Start Ask the AI to build a prototype that answers whether your state model handles a specific edge case, or to generate several UI variants for a page you are unsure about.