During September 2025, Stéphane Theleman enhanced authentication robustness and content security policy handling in the OpenNMS/opennms repository. He improved the user authentication system by refining the whoami service to return false on error, ensuring the authentication store only updates with valid data, which reduced login edge-case failures. Stéphane also addressed content security policy issues for map tile providers through configuration and documentation updates, eliminating the need for code changes and lowering operational risk. His work leveraged JavaScript, TypeScript, and state management techniques, resulting in more reliable authentication flows and clearer deployment processes for frontend integrations and API interactions.