Worked on repository hygiene and stability for the phate/jlm project, focusing on refining the .gitignore configuration to improve build reliability. Addressed a bug where an overly broad ignore rule risked excluding essential build scripts, which could compromise artifact preservation and reproducibility. The solution involved updating the ignore pattern to target only build-* directories, ensuring that necessary scripts remained tracked while unwanted directories were excluded. This change reduced the risk of missing important files during continuous integration runs. The work demonstrated careful use of Git, shell scripting, and configuration management, emphasizing attention to detail and an understanding of CI workflows.