Worked on the openai/codex repository to enhance the Conversation History Widget by refining its user interface using Rust and UI development skills. The main feature involved hiding the scrollbar to create a cleaner appearance while ensuring that users could still scroll through conversation history using keyboard and mouse inputs. Adjustments were made to content rendering so that the widget utilized the full available width, improving UI density and alignment with the existing design system. No major bugs were addressed during this period, as the focus remained on targeted widget design improvements and maintaining usability without introducing visual clutter to the interface.