During June 2026, this developer enhanced the Quarto CLI by implementing a regex-based URI matcher to support proxy routing in the Quarto Preview navigation. Working within the quarto-dev/quarto-cli repository, they introduced logic to recognize URIs in the /proxy/{{port}} format, enabling more reliable routing and WebSocket handling for users operating behind proxies. The solution was developed using JavaScript and TypeScript, with a focus on front end development and WebSocket integration. This targeted feature improved the reliability of previews in proxied environments, reduced navigation issues, and contributed to smoother deployment experiences for enterprise users without addressing major bug fixes.