Deemo Huang developed comprehensive end-to-end test coverage for the admin customer management workflow in the cgerard321/champlain_petclinic repository. Focusing on the Admin: Edit Customer Information feature, Deemo implemented automated tests using Playwright and TypeScript to simulate admin login, perform edits to customer fields, and verify successful updates and confirmation messages. This work enhanced frontend quality assurance by validating the entire workflow, reducing regression risk, and supporting ongoing maintenance. Although no bugs were fixed during this period, Deemo’s contribution strengthened release readiness and quality engineering coverage, demonstrating proficiency in end-to-end testing and frontend development within a TypeScript-based codebase.