Quality engineering

Atomic accessibility coverage: 13 skills (a11y-violation-gate, aria-authoring-patterns, axe-a11y, ibm-equal-access-a11y, lighthouse-a11y, pa11y-a11y, screen-reader-test-author, wave-a11y, wcag-checklist-builder, wcag-color-contrast, wcag-focus-trap, wcag-keyboard-navigation, wcag-compliance-reporter) and 2 agents (accessibility-code-critic, screen-reader-test-executor).

Firefox + Chrome extension testing: 3 skills (playwright-extension-fixtures with the reload matrix + chrome.storage quota tests, chrome-extension-messaging-tests, manifest-v3-test-surface-reference with the web-ext Firefox CLI) and 1 agent (extension-test-author, which composes them to author one Playwright spec per behavior spec).

Data quality testing for analytical pipelines: 5 skills (dbt-testing, great-expectations, soda-checks, data-quality-gate, data-quality-conventions) and 2 agents (schema-diff-reviewer, data-anomaly-triager).

Localization (l10n) + i18n testing: 4 skills (i18n-string-coverage, locale-format-validator, pseudo-localization-runner, rtl-rendering-tester) and 1 agent (l10n-audit-runner).

PDF + print rendering tests: 4 skills (html-to-pdf-regression, pdf-accessibility-checker, pdf-snapshot-tester, print-stylesheet-tests) and 1 agent (pdf-test-author). Covers print/PDF output where qa-visual-regression covers screen output.

PWA testing: 5 skills (workbox-tests carrying the cache-strategy design reference, web-push-tests, service-worker-lifecycle-tests carrying the general Playwright SW harness, offline-fallback-tests, add-to-homescreen-flow-tests carrying the install-flow reference contract) and 1 agent (pwa-test-author, one Playwright spec per PWA surface) - the single home for service-worker, install-flow, and cache-strategy testing, distinct from qa-notifications' cross-channel push harness

Visual regression testing: 7 skills (percy-visual-regression-testing, chromatic-visual-regression-testing, playwright-snapshots with the responsive breakpoint matrix, storybook-visual-regression-testing, chart-render-tests covering Chart.js / D3 / Vega chart regression, visual-baseline-conventions, visual-baseline-gate emitting binding gate artifacts) and 2 agents (visual-diff-classifier with a per-PR summary mode, visual-baseline-curator).