Playwright + Next.js Testing Best Practices Comprehensive testing optimization guide for Playwright with Next.js applications. Contains 43 rules across 8 categories, prioritized by impact to guide reliable, fast, and maintainable E2E tests. When to Apply Reference these guidelines when: - Writing new Playwright tests for Next.js apps - Debugging flaky or failing tests - Optimizing test execution speed - Setting up authentication state reuse - Configuring CI/CD pipelines for testing - Testing Server Components and App Router features - Reviewing test code for reliability issues Rule Categories…