Henrik Lovhaug focused on frontend development in the webkom/lego-webapp repository, addressing a user interface issue in the toast notification system. He resolved a bug where all toast messages displayed a close icon, ensuring that success toasts now render a checkmark icon while others retain the close icon. This change improved user feedback and maintained consistency with design specifications. Henrik approached the fix with minimal risk, isolating the update to the relevant component without affecting broader functionality. Working primarily with React, JavaScript, and TypeScript, he demonstrated careful attention to UI reliability and contributed to a more consistent developer workflow.