- **Description:** Implement testing and ensure code quality - **Activities:** - Setup testing framework (Jest, React Testing Library) - Write unit tests for components - Write integration tests for user workflows - Create end-to-end tests with Cypress/Playwright - Implement accessibility testing - Perform cross-browser testing - Test responsive design on various devices - Create performance testing suite - Achieve target code coverage (>80%) - Document test cases and testing procedures - **Deliverables:** Test suite, test documentation, coverage reports