Worked on the github/codeql-action repository to address reliability issues in archive extraction workflows, focusing on restoring consistent tar-based handling for zstd archives. Using JavaScript, Node.js, and Shell Scripting, reverted a previous change that introduced gtar-specific logic, simplifying command selection and reducing maintenance complexity. The update ensured that tar was used uniformly for both version checks and extraction, which improved cross-platform compatibility and stabilized archive operations across continuous integration environments. By aligning archive handling and removing unnecessary dependencies, the work enhanced the maintainability and reliability of the codebase, addressing a key bug and supporting smoother CI processes for the project.