During January 2025, this developer focused on backend stability for the languagetool-org/languagetool repository, addressing a key issue with the health check endpoint. They corrected the handling of HTTP HEAD requests so that the endpoint now returns a 200 OK status with no response body, aligning with HTTP protocol standards and improving the reliability of health monitoring. The work was implemented in Java, emphasizing backend development and precise adherence to protocol semantics. No new features were introduced during this period, as efforts centered on refining existing infrastructure and ensuring accurate, standards-compliant health signals for improved system uptime and maintainability.