Worked on the XTLS/Xray-core repository to extend and reorganize the .gitignore file, focusing on improving codebase hygiene and maintainability. The update introduced comprehensive patterns to exclude IDE-specific files, archives, binaries, logs, and system files from version control, ensuring that generated and temporary artifacts are consistently ignored across different development environments. This approach reduced unnecessary noise in diffs and contributed to more reliable continuous integration processes. The work demonstrated skills in configuration management and version control, specifically utilizing gitattributes and Git ignore pattern design, and supported smoother onboarding and collaboration for contributors by clarifying repository structure and expectations.