During December 2025, Jin contributed to the potiuk/airflow repository by implementing Korean translations for date range filter validation messages within components.json. Jin focused on front end development with an emphasis on internationalization and localization, utilizing JSON to structure the new language support. The work aligned with the existing i18n framework, ensuring maintainability and consistency across the user interface. By clarifying validation feedback for Korean-speaking users, Jin improved the overall user experience and laid the foundation for broader localization efforts in UI validation workflows. The contribution was isolated, well-documented, and traceable, demonstrating careful attention to integration and future scalability.