During May 2025, Diego Noah focused on improving development environment hygiene for the ethereum/execution-spec-tests repository. He updated the .gitignore configuration to exclude local VSCode launch files, preventing accidental commits of user-specific settings and ensuring a cleaner, more consistent codebase for all contributors. This change streamlined collaboration by reducing unnecessary noise in pull requests and diffs, making onboarding smoother for new developers. Diego’s work centered on Git and contributor tooling, demonstrating attention to repository maintenance and workflow efficiency. While no bugs were fixed during this period, the feature addressed a common pain point in multi-contributor projects and improved overall project hygiene.