Worked on improving the test environment setup for the hydraxman/vscode-copilot-chat repository by updating documentation to enforce Git Large File Storage (LFS) requirements and provide troubleshooting guidance for Node.js and LFS installation issues. Focused on enhancing the reliability of test runs and streamlining the onboarding process for new contributors, the work involved editing the CONTRIBUTING.md file using Markdown to clarify setup steps and reduce common sources of test failures. This documentation-focused contribution aimed to make local development and continuous integration workflows more deterministic, leveraging skills in technical writing and process improvement to address recurring environment setup challenges.