- UI Mode now displays steps, fixtures, and attachments; added testProject.teardown and expect.configure for custom teardown and pre‑configured expect instances.
- Introduced locator.and() and enhanced webServer config with stderr/stdout options; added browserContext console and dialog events with page‑source helpers.
- Breaking changes: npx playwright test fails when both playwright and @playwright/test are installed, and Node.js 14 support is dropped.