Agent Skills: accessibility-audit

Load PROACTIVELY when task involves accessibility compliance or inclusive design. Use when user says \"check accessibility\", \"audit for WCAG\", \"fix screen reader issues\", \"add keyboard navigation\", or \"check color contrast\". Covers WCAG 2.1 AA compliance across semantic HTML, ARIA patterns, keyboard navigation, screen reader support, color contrast ratios, form accessibility, media alternatives, and focus management. Produces structured audit reports with severity ratings.