Worked on the goharbor/harbor repository to enhance the quality of internationalization in user-facing messages, focusing on frontend development and localization. Addressed a key bug by correcting misspellings in authentication error messages and the Content Trust Policy description, thereby improving clarity and professionalism for international users. Utilized HTML and TypeScript to ensure accurate and consistent i18n strings, reducing the risk of user confusion and minimizing potential support issues. Demonstrated careful attention to localization quality assurance and maintained disciplined Git-based change management practices, supporting traceability and maintainability. The work contributed to a more polished and reliable user experience across languages.