During November 2024, contributed backend enhancements to the WSB-CW8/Co-Development-Task repository by updating the HelloWorld API endpoint to return a standardized 'Hello World!' response. Established foundational testing infrastructure using Java and Spring Boot, introducing a dedicated TestController and implementing unit tests to verify that the /test endpoint consistently returns HTTP 200 OK. The work focused on setting up reliable automated testing practices, ensuring future backend changes can be validated efficiently. Emphasis was placed on backend development and unit testing, with all changes consolidated in a single feature commit that serves as the baseline for ongoing test-driven development within the project.