Use when completing any task (final validation step), running audits, preparing for deployment, or when ESLint/TypeScript/build errors occur.
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Run score Not tested
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/responsiveness.md— Breakpoints, test order, anti-patterns
Testing, Validation, Code Quality, Launch Readiness
| Metric | Target | Measurement |
|---|---|---|
| Lighthouse Best Practices | >90 | Lighthouse JSON → categories.best-practices.score * 100 |
| ESLint Errors | 0 | npm run lint -- --format json |
| ESLint Warnings | 0 | npm run lint -- --format json |
| Formatting Issues | 0 | npm run format:check |
| HTML Validation Errors | 0 | npx html-validate dist/ |
# Full QA pipeline
npm run check:kpis # All static convention checks (single source of truth)
npm run lint # ESLint errors/warnings
npm run format:check # Prettier formatting
npm run check # Astro type check — covers .astro templates, which tsc alone does not
npm run build # Astro build (0 errors, 0 warnings)
Shortcut: npm run validate runs check:kpis, lint, format:check and check in sequence.
# or javascript:void(0))public/favicon.svg)public/og-image.png, 1200x630px)astro.config.mjsclient:load directives| Category | Minimum | Ideal |
|---|---|---|
| Performance | 90 | 95+ |
| Accessibility | 90 | 95+ |
| Best Practices | 90 | 95+ |
| SEO | 90 | 95+ |
These rules always apply — even under time pressure, even for "just a small update":
npm run build. "I only changed text" — content changes can also break the build (missing frontmatter fields, broken links).// eslint-disable-next-line is allowed, but only with an explanation of why the rule doesn't apply here.lint → format → tsc → build) takes under 30 seconds.Read LEARNINGS.md in this directory to avoid known anti-patterns.
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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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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 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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