Worked on the godotengine/godot repository to enhance the reliability and user experience of the core file handling system. Focused on a targeted bug fix in the File Dialog, implementing case-insensitive comparison for file extensions using C++. This change addressed issues where files with identical names but differing extension case could be treated as duplicates, potentially leading to accidental overwrites or confusion. The solution preserved existing dialog behavior while improving predictability for users. Demonstrated skills in C++ development, file handling, and UI development by delivering a precise, low-risk update that maintained stability and aligned with user expectations for file selection.