Worked on the coleam00/archon repository to implement full support for Loop and Approval node types within the DAG Builder, enhancing workflow automation capabilities. The approach involved updating core TypeScript files and React components to accurately recognize and display these new node types, while addressing validation issues that previously caused false-positive errors. Expanded test coverage was introduced through both unit and integration tests, ensuring robust handling of the new features. UI and styling improvements were made using CSS, including new tokens for clear visual distinction of node types. The work emphasized maintainability, developer experience, and cross-team collaboration throughout the development process.