描述
Routing-first responsive layout strategy and verification for web interfaces. Use when the main job is classifying whether the failure is page-shell adaptation, reusable component/container behavior, dense-data or toolbar pressure, responsive media, or reflow verification — then turning vague “breaks on mobile” requests into one concrete strategy packet. Route component API design to `ui-component-patterns`, accessibility remediation to `web-accessibility`, system-wide breakpoint/token governance to `design-system`, and broad UI audit work to `web-design-guidelines`.