Arsen focused on repository hygiene for the Lilypad-Tech/lilypad project by implementing a targeted .gitignore rule to exclude the chain-data directory from version control. Using Git and leveraging skills in gitignore management, Arsen addressed the risk of accidental commits of generated or temporary data, which can lead to repository churn and potential exposure of sensitive information. This change aligned the repository with best practices, improving maintainability and clarity for both contributors and automated workflows. While the scope of work was limited to a single feature over one month, the update enhanced onboarding efficiency and reduced CI noise, contributing to a cleaner development environment.