Lael Luo enhanced OAuth token management for the openai/codex repository, focusing on reliability and seamless access for the RMCP client. Using Rust and leveraging skills in API integration and token management, Lael implemented persistence and rehydration of token expiry timestamps, enabling proactive refreshes before expiration. This approach reduced the risk of authentication disruptions and improved overall uptime. Additionally, Lael addressed a related bug by ensuring token refresh logic relied on the expires_at timestamp, closing gaps in token validity. The work established a robust foundation for future authentication lifecycle improvements, demonstrating depth in both technical execution and problem-solving.