David worked on the UEK-i-team/unievent-planner-frontend repository, focusing on a theme system migration to modernize the frontend’s styling architecture. He removed the legacy theme configuration file and color definitions, laying the foundation for a potential transition to CSS-in-JS or an alternative theming solution. Using TypeScript and frontend development skills, David’s work aimed to improve maintainability and flexibility in the project’s styling approach. The migration was committed with traceability in mind, allowing for future rollbacks if necessary. Over the course of the month, David delivered this feature, demonstrating depth in frontend architecture and a methodical approach to large-scale codebase changes.