Worked on enhancing the reliability of the email handling workflow in the UserOfficeProject/user-office-core repository by expanding unit test coverage for the StfcEmailHandler component. Focused on backend development using TypeScript, the work involved implementing comprehensive unit tests that addressed both success and error scenarios during call creation events. Test descriptions were refactored to improve clarity and maintainability, making the suite more accessible for future contributors. Although no major bugs were fixed during this period, the improvements reduced production risk and laid the foundation for continuous integration readiness, enabling earlier regression detection and supporting safer, faster development iterations through robust testing practices.