- Add @vitest/browser-playwright; use playwright() factory (not string)
- Import page from vitest/browser (not deprecated @vitest/browser/context)
- Add afterEach(cleanup) so each test gets a fresh DOM
- Use oxc transform for JSX instead of esbuild (avoids Vite 8 warning)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>