Worked on the uwblueprint/humane-society repository to deliver a comprehensive code quality improvement focused on backend development and API design using TypeScript. The primary contribution involved a global lint cleanup and the standardization of message formatting across multiple files, which enhanced code readability and consistency without altering existing functionality. By addressing linting errors and unifying error message construction, the work reduced the risk of future defects and streamlined the code review process. These changes improved maintainability and established a stronger foundation for future refactoring, supporting more reliable quality assurance and making it easier for new contributors to onboard and collaborate.