What problem does it solve? Moving a chosen design mockup into a real application often breaks data bindings, stale script selectors, or semantic status colors. This Skill carries a prototype's design language into live templates and stylesheets while preserving every data binding and behavior. ## Core Features & Use Cases - Design System Extraction: Reads the target prototype to derive its color palette, font stack, spacing scale, and structural patterns before editing anything. - Markup and Style Rewrite: Restructures real templates to match the prototype's layout while keeping every data binding, script selector, and semantic status meaning intact. - Runtime Verification: Restarts the dev server and exercises changed routes via curl or a browser MCP to confirm real data renders without errors. - Use Case: After picking a dark-themed dashboard mockup from design-prototypes/ui-concepts, apply its visual language to the live app's dashboard template without losing any dynamic fields or breaking inline scripts. ## Quick Start Ask the agent to restyle the live app to match a specific prototype file, for example: apply the design from design-prototypes/ui-concepts/dark-ledger.html to the real dashboard.