Worked on the kjsce-codecell/Hackathon repository to enhance the reliability of the event registration process by addressing a timeline bug. Focused on correcting the registration closing date and realigning subsequent event days to ensure the schedule accurately reflected intended milestones. Utilized HTML and front end development skills to implement the fix, emphasizing clean commit practices and traceability by linking the change to a specific issue. The update improved the accuracy of the registration window, reducing the risk of scheduling conflicts for participants. This work laid the foundation for future feature development and demonstrated attention to process quality and repository hygiene.