Worked on the coleam00/archon repository to address a critical reliability issue in workflow approval messages, ensuring that operators see resolved output values instead of raw references during human-in-the-loop gates. This was achieved by implementing a substitution mechanism at the top of the approval path, which replaced reference placeholders with concrete node outputs across all relevant emission surfaces, including message sending and workflow event creation. The solution was developed using Node.js and TypeScript, with a strong emphasis on full stack development and comprehensive testing. Expanded test coverage verified correct message rendering, reducing manual verification effort and improving auditability for workflow approvals.