Worked on the moltbot/moltbot repository to enhance media handling reliability, focusing on the image transfer pipeline. Addressed a critical bug where zero-byte image files were previously inlined as broken images by implementing a fallback that displays a clear 'saved at <path>' message instead. Improved MIME-type detection by introducing a mechanism that derives types from file extensions when content sniffing fails, ensuring robust handling of empty or malformed image fetches. Added comprehensive tests to validate these scenarios, reducing user-facing errors and improving UI consistency. Utilized Node.js, TypeScript, and full stack development skills to strengthen data integrity and user experience.