Worked on the dust-tt/dust repository to enhance error handling and maintainability in a TypeScript-based API environment. Focused on improving multi-region workspace error signaling by updating relocation error responses from 503 to 404, clarifying that a workspace no longer exists in the current region and reducing unnecessary alert noise. Refactored the getMaintenanceError function to support more flexible input types, increasing robustness and adaptability. Emphasized code clarity by adding inline documentation explaining error semantics, which aids future maintainers and streamlines triage. Leveraged skills in API development, error handling, and front end development to deliver targeted, maintainable improvements within one month.