Worked on the OpenTTD/OpenTTD repository to enhance reliability and user safety in core gameplay tooling, focusing on targeted bug fixes using C++ and GUI development skills. Addressed savegame deletion by implementing item-type validation before file removal, ensuring that only valid savegame files could be deleted and providing user-facing error messages for invalid actions. Improved the station management workflow by correcting the station joiner logic, refining the discovery process to consider all relevant tiles, and simplifying internal logic for maintainability. These changes reduced the risk of data loss, improved user experience in station setup, and established a robust foundation for future enhancements.