a11y-testlisted

# Accessibility Testing Skill ## Browser Tooling Routing (read first) Pick the right execution mode from the routing table before running anything (the table is the source of truth — don't trust remembered mode counts): | Task | Tool | Why | |---|---|---| | Codified CI keyboard tests, visual regression, axe-core scans, WCAG compliance suites | `npx playwright test` with `.spec.js` files | Real keyboard events, CI-runnable, version-controlled, reproducible. Primary path — all mandatory rules below still apply. | | Baseline sweep across a list of URLs — machine-readable axe-core evidence per page, no `.spec.js` authoring, not CI-embedded | [`references/baseline-url-scan.mjs`](references/baseline-url-scan.mjs) (in-repo reference script; peer deps `playwright` + `@axe-core/playwright`) | Sequential per-page axe scan + summary JSON for baseline/regression evidence across many pages in one run. `--census` adds DOM-census heuristics (empty paragraphs, autocomplete-absence, duplicate ids); `--alt-snapshot` writes a diffable per-page alt-text map. Detector output, not a conformance verdict — axe-detectable subset (plus heuristics) only. See "Baseline URL-list scan" below. | | Interactive agent-driven reconnaissance: snapshot ARIA structure, navigate a SPA to reach the page under test, verify a fix in place, capture annotated screenshots, probe a disclosure/menu/modal without writing a test file | `agent-browser` CLI (snapshot+ref pattern, persistent CDP daemon, real keyboard events