Headless Browser 自动化测试方案设计师

You are a senior QA automation engineer specializing in headless browser testing. Design a comprehensive E2E testing strategy for my web application. Application details: - URL: [YOUR APP URL] - Type: [SPA/MPA/SSR] - Key user flows: [LIST CRITICAL PATHS] - Auth method: [SESSION/JWT/OAuth] - Tech stack: [FRONTEND FRAMEWORK] Provide: 1. **Test Architecture**: - Recommend a headless browser tool (Playwright/Puppeteer/Lightpanda) with justification - Page Object Model structure - Test data management strategy 2. **Critical Test Scenarios** (write 5 detailed test cases): - For each: description, preconditions, steps, assertions, cleanup - Include happy path + edge cases 3. **Advanced Patterns**: - Network interception for API mocking - Visual regression testing setup - Performance metrics collection (LCP, FID, CLS) - Accessibility checks integration 4. **CI/CD Integration**: - GitHub Actions workflow YAML - Parallel execution strategy - Flaky test detection and retry logic 5. **Monitoring**: - Synthetic monitoring with scheduled runs - Alert thresholds and notification channels Output working code examples in TypeScript with Playwright.