Use when creating or modifying any UI element visible to the user, reviewing HTML markup, adding interactive elements, or when Lighthouse Accessibility drops below 90.
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See how to installReview the instructions the agent will receive before you install.
This skill references the following globals — read them BEFORE starting work:
system/globals/accessibility.md— WCAG rules, ARIA patterns, keyboard nav, focus stylessystem/globals/colors.md— Contrast ratios, color semantics
WCAG 2.1 AA, ARIA, Keyboard Navigation, Contrast, Screen Readers
| Metric | Target | Measurement |
|---|---|---|
| Lighthouse Accessibility | >90 | Lighthouse JSON → categories.accessibility.score * 100 |
| Pa11y Errors | 0 | npx pa11y <URL> --reporter=json |
| Images without Alt | 0 | npm run check:kpis |
These rules always apply — even under time pressure, even for "it's just an internal tool":
div instead of button for clickable elements. Not even "because it's easier." A div is not focusable, not keyboard-operable, and is ignored by screen readers.Read LEARNINGS.md in this directory to avoid known anti-patterns.
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Use when creating or modifying .astro/.tsx files, configuring astro.config.mjs, working with Content Collections, or when TypeScript or build errors occur.
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Use when creating or editing pages, blog posts, or content files, adding meta tags, or when Lighthouse SEO drops below 90.
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Use when completing any task (final validation step), running audits, preparing for deployment, or when ESLint/TypeScript/build errors occur.
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Use when starting work on an AstroDeck project, needing to understand the project structure, or looking up available components, sections, and layouts.
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Use when writing or reviewing any CSS class, changing colors, modifying globals.css, or when hardcoded colors or inline styles are detected.
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Use when creating or modifying any visible UI element, adjusting spacing or typography, reviewing visual consistency, or when Lighthouse Performance drops below 90.
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