In September 2025, JR Rafols focused on stabilizing the authentication flow for the Shopify/shop-chat-agent repository by addressing a critical configuration issue. He standardized the customer authentication configuration, renaming the config section and aligning redirect_uris to the expected format, which resolved a misconfiguration that had been affecting user login. Working primarily with TOML and leveraging his configuration management expertise, JR implemented the fix within the customer_authentication app module. This targeted update improved the maintainability and consistency of the authentication setup, reducing the risk of future misconfigurations and ensuring a smoother experience for both developers and end users.