Installs @axe-core/playwright and adds e2e/accessibility.spec.ts covering:
- home, persons, admin (authenticated via stored admin session)
- login (unauthenticated context)
Uses wcag2a + wcag2aa tags. Violations are logged with impact level and
node count before the assertion fails, so the first run against the live
stack will produce a clear inventory of any issues to fix or exclude.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>