During March 2026, Sandstone637 enhanced authentication and reliability for the rommapp/romm repository by developing a robust OAuth token management system using Python and FastAPI. Their work introduced refresh tokens with rotation and expiry invalidation, ensuring secure token lifecycles and preventing duplicate token use through race condition mitigation. They improved API stability by implementing graceful error handling for expired tokens, reducing server errors on authentication failures. Startup configuration was strengthened with validation of token-related settings, and code hygiene was improved by clarifying token creation logic and enforcing token typing. These changes deepened the project’s security, maintainability, and backend resilience.