Denilson Fiesta worked on the UCB-TallerDeDesarrollo/TDDLab repository, focusing on enhancing the security and reliability of a VSCode extension. During this period, Denilson addressed a packaging vulnerability by ensuring that environment-specific configuration files, such as .env, were excluded from the distributed extension. This was achieved by updating the .vscodeignore file and validating the integrity of the packaging process. The work centered on VSCode extension development and involved careful attention to file management and security best practices. Although no new features were released, Denilson’s contribution reduced the risk of secrets exposure and improved the overall robustness of the extension.