Tooling: install the jsx-a11y plugin

[rami-elementor]

No description provided.

[Copilot]

Pull request overview

Adds accessibility-focused tooling and checks to the Code Snippets repo by introducing JSX a11y linting rules, adding axe-core based Playwright accessibility tests, and wiring up a dedicated CI lint workflow.

Changes:

• Add eslint-plugin-jsx-a11y to ESLint flat config and configure initial a11y rule severities.
• Add @axe-core/playwright and a new Playwright E2E accessibility spec that runs axe against key admin screens.
• Introduce a new GitHub Actions workflow to run CSS/JS/PHP linting on PRs and branch pushes.

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
tests/e2e/accessibility.spec.ts	New axe-core Playwright spec covering several WP admin/plugin screens.
package.json	Adds devDependencies for axe Playwright integration and eslint-plugin-jsx-a11y.
package-lock.json	Lockfile updates for the new devDependencies and transitive packages.
eslint.config.mjs	Enables jsx-a11y recommended flat config and adds explicit a11y rule severity overrides.
.github/workflows/lint.yml	New CI workflow intended to run stylelint, eslint, and PHP CS.

[louiswol94]

Add the beta branches as well?

[louiswol94]

await page.waitForLoadState('networkidle') has been very flaky in Elementor's code base. Prefer to wait for a stable selector.

[louiswol94]

Seems like the Playwright tests are failing: https://github.com/codesnippetspro/code-snippets/actions/runs/25452573742/job/74673455166?pr=377

[rami-elementor]

@louiswol94 moving the tests to a separate PR.

[github-actions]

PHPUnit Test Failure

One or more PHP version targets failed in this workflow run.

See all PHPUnit errors (click to expand)

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Affected PHP version: all

PHPUnit\Framework\ExpectationFailedException
Code_Snippets\Tests\REST_API_Cloud_Test::test_get_items_caps_snippets_per_page_user_option_at_one_hundred
Failed asserting that 404 is identical to 200.

/home/runner/work/code-snippets/code-snippets/tests/phpunit/test-rest-api-cloud.php:198
phpvfscomposer:///home/runner/work/code-snippets/code-snippets/src/vendor/phpunit/phpunit/phpunit:106

---

Affected PHP version: all

PHPUnit\Framework\ExpectationFailedException
Code_Snippets\Tests\REST_API_Cloud_Test::test_get_items_respects_explicit_per_page_request
Failed asserting that 404 is identical to 200.

/home/runner/work/code-snippets/code-snippets/tests/phpunit/test-rest-api-cloud.php:221
phpvfscomposer:///home/runner/work/code-snippets/code-snippets/src/vendor/phpunit/phpunit/phpunit:106

---

Affected PHP version: all

PHPUnit\Framework\ExpectationFailedException
Code_Snippets\Tests\REST_API_Cloud_Test::test_get_items_uses_snippets_per_page_user_option
Failed asserting that 404 is identical to 200.

/home/runner/work/code-snippets/code-snippets/tests/phpunit/test-rest-api-cloud.php:176
phpvfscomposer:///home/runner/work/code-snippets/code-snippets/src/vendor/phpunit/phpunit/phpunit:106

---

Please review the failing jobs and fix the issues before merging.