During January 2026, the developer contributed to the rivet-gg/rivet repository by implementing an experimental light-mode Comic Sans font feature using CSS and front end development skills. They focused on theme-aware UI customization, ensuring that the new font applied exclusively to light mode while preserving the default typography in dark mode. The approach involved isolating style changes to prevent unintended side effects, maintaining theme stability throughout. Deployment validation was conducted via Railway to test the feature in a real environment. Although no bugs were fixed, the work demonstrated careful design experimentation, thorough testing, and end-to-end delivery from code to deployment.