- Replace Jest with Vitest (via vite-plus)
- Replace XO/ESLint with Oxlint
- Replace Prettier with Oxfmt
- Convert all done() callback tests to Promise-based
- Add await to all expect().rejects/resolves assertions
- Update CI workflow to use voidzero-dev/setup-vp@v1
- Add coverage reporting with v8 provider
- Add vite.config.ts with test, lint, and fmt config

BREAKING CHANGE: Minimum Node.js version is now 22.12.0

Override minimatch to >=3.1.4 in pnpm-workspace.yaml to resolve
3 high-severity ReDoS vulnerabilities (GHSA-3ppc-4f35-3m26,
GHSA-7r86-cg39-jmmj, GHSA-23c5-xmqv-rm74) in postcss-url's
transitive dependency.

- Update engines to >=22.13.0 (pnpm@11.1.2 requires it)
- Use node version '22' in CI matrix (latest 22.x)
- Set run-install: false in setup-vp to use explicit install step
- Add github-token to coveralls action

- Add missing @vitest/coverage-v8 devDependency for coverage reports
- Add Node.js 24 to CI test matrix

Worker forks crash on Windows. Switch default pool to threads and use
Vitest projects config to run cli.test.js (which needs process.chdir)
in the forks pool.

Puppeteer's postinstall may not reliably download Chrome on all
platforms. Add an explicit install step to ensure Chrome is available
for tests on Windows + Node 24.

Instead of relying on Puppeteer's postinstall to download Chrome
(which fails intermittently on Windows CI runners), use the
browser-actions/setup-chrome action to install a stable Chrome
and point Puppeteer to it via PUPPETEER_EXECUTABLE_PATH.
PUPPETEER_SKIP_DOWNLOAD=true prevents redundant Chrome downloads.