During May 2026, this developer delivered a key feature to the atviriduomenys/manifest repository by implementing Gender Code Standardization using an enum based on the ISO/IEC 5218 standard. Working primarily with JavaScript, the approach focused on improving data consistency and analytics reliability through precise data modeling. The developer also engaged in code refactoring, cleaning up comments and streamlining data entries to enhance maintainability and reduce technical debt. No major bugs were reported during this period, reflecting disciplined version control and careful implementation. The work resulted in higher data quality and a clearer, standards-aligned structure for future development.