What problem does it solve? It turns scattered UI requests into a consistent, evidence-based design workflow grounded in proven open-source design systems instead of ad-hoc visual decisions. ## Core Features & Use Cases - Pattern Catalog: Distilled guidance from GOV.UK, USWDS, Primer, Cloudscape, PatternFly, Polaris, and Ant Design covering accessibility, information architecture, states, and microcopy. - Shipping Checklist: Quality gates for structure, states, accessibility, content, role-based privacy, and operational quality before release. - Evidence Template: A standard scenario format capturing before/after states, audit events, and screenshot or log proof. - Use Case: When redesigning an operator dashboard for a marketplace, follow the workflow to define the user role, pick reference systems, cover all UI states, validate keyboard flow, and produce an evidence pack for review. ## Quick Start Use the ux-ui-oss-playbook skill to redesign the admin dashboard screen with role-based views and full state coverage.