Worked on the wikitree-browser-extension repository to enhance data quality by updating the ONS.json file with a new name variant for Łojszczyk. Focused on data management, the approach involved a minimal JSON data-file change that improved name matching and overall data consistency without introducing risk or requiring extensive rollout effort. The update was delivered as a single, well-documented commit, ensuring full traceability and clear stewardship of the data. No major bugs were addressed during this period, but the targeted feature improved search accuracy and analytics reliability for user-facing features, demonstrating careful attention to detail and efficient use of data management skills.