Worked on the wavelog/wavelog repository to address a specific issue with QSO panel date input handling, focusing on improving the reliability of URL parameter processing when dates contain commas. Applied a targeted bug fix using JavaScript and PHP, replacing commas in date strings with a URI-safe placeholder before encoding and restoring them after processing. This approach ensured that dates with embedded commas were correctly managed in URL parameters, reducing errors and enhancing the user experience during QSO panel navigation and date filtering. Demonstrated backend and frontend development skills by delivering a robust solution that stabilized date handling in the application.