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fix(website): remediate WCAG accessibility issues and add axe regression guardrail (#2180)

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* fix(website): remediate WCAG accessibility issues and add axe regression guardrail

Fixes accessibility violations found by an axe-core sweep of every website
page in both light and dark themes:

- aria-allowed-role (WCAG 1.3.1, 4.1.2): the shared resource card rendered
  an <article> with role="listitem", which is not an allowed role for that
  element. Switched the wrapper to a <div role="listitem"> so the listitem
  role is valid (affected every card, e.g. #arcade-canvas on /extensions/).
- aria-required-children (WCAG 1.3.1): removed role="list" from the tools,
  contributors, and cookbook containers whose children are not list items.
- nested-interactive (WCAG 4.1.2): removed tabIndex=0 from extension cards
  and rendered the author as a non-interactive span so no interactive
  control is nested inside another (the author link remains in the modal).
- color-contrast (WCAG 1.4.3): gave .btn-primary explicit white text with an
  AA-compliant hover (#7326d6), and bumped the dark-theme secondary text gray
  (--sl-color-gray-3) to #84849c (5.32:1) so ToC / meta / footer text passes.

Adds a checked-in regression guardrail:

- website/scripts/a11y-audit.mjs runs axe-core over all routes in both themes
  against the production build and fails on critical/serious violations only
  (moderate/minor are reported but non-blocking). Transitions/animations are
  disabled before sampling so axe measures settled, steady-state colors
  instead of mid-theme-transition frames.
- Adds npm scripts (website:a11y at the root, a11y in website/) and README
  docs. The matching Build Website CI step is proposed in the PR description
  (omitted from this commit because the authoring token lacks workflow scope).

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

* fix(website): harden a11y audit per PR review

- Fail fast when a route navigation returns a non-2xx response, so the
  guardrail can't silently pass against a broken/missing route (page.goto
  resolves even for 4xx/5xx).
- Launch the Astro preview server via `node <astro-bin>` instead of
  `spawn(..., { shell: true })`. Removing the shell layer keeps signal
  delivery / detached-PGID shutdown predictable; resolving Astro's bin and
  running it with process.execPath also avoids the EINVAL that modern Node
  raises when spawning the npx.cmd shim without a shell on Windows.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: David Pine <7679720+IEvangelist@users.noreply.github.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
David Pine
2026-07-06 20:11:17 -05:00
committed by GitHub
parent 96f3275a66
commit d61dfdcddc
12 changed files with 471 additions and 122 deletions
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website/README.md
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@@ -12,6 +12,14 @@ npm run website:dev # generate data + start the dev server
npm run website:build # full production build
```
## Accessibility
The website has an automated axe-core + Playwright audit. Run it locally with `npm run website:a11y` from the repository root, or run `npm run a11y` from `website/` after building `dist` first.
CI blocks on critical and serious violations. Minor and moderate best-practice issues are reported as non-blocking.
Authoring conventions: resource cards use `div[role="listitem"]` wrappers, not `<article>`; only add `role="list"` to containers whose direct children are list items; do not nest interactive controls inside another focusable element; `.btn-primary` and ToC links must meet WCAG AA (4.5:1) contrast in both light and dark themes.
## Social preview cards (LinkedIn, etc.)
Shared links render as large preview cards driven by Open Graph / Twitter meta tags.