During November 2025, Leo focused on production configuration management for the polkadot-js/apps repository, addressing stability and maintainability concerns. He removed deprecated endpoints for Aleph Zero and Integritee-Kusama from the production.ts and productionRelayKusama.ts files, reducing the risk of misconfiguration and eliminating dead connection points. This targeted cleanup, implemented using TypeScript and leveraging his skills in frontend development and configuration management, resulted in cleaner, more reliable production deployments. The work was carefully documented with a clear Git commit, ensuring traceability and ease of rollback. Leo’s contribution improved code health and strengthened the overall production readiness of the application.