Worked on improving development environment hygiene for the ethereum/execution-spec-tests repository by updating the .gitignore to exclude VSCode launch configuration files. This change prevented accidental commits of local editor settings, reducing unnecessary noise in pull requests and diffs. The approach focused on maintaining a clean and consistent setup for all contributors, which streamlined onboarding and collaboration. Utilized Git for version control and applied best practices in contributor tooling to ensure repository cleanliness. No major bugs were addressed during this period, as the primary contribution centered on process improvement and repository maintenance rather than feature development or language-specific implementation.