During June 2026, contributed to ohcnetwork/care_fe, echoix/grass, and OpenSTEF/openstef by delivering three features and resolving five bugs focused on stability and data integrity. Work included preventing crashes in Encounter Plots with empty configurations and preserving user-customized bed names in care_fe, using React and TypeScript for robust front-end handling. In echoix/grass, expanded Python-based test coverage across GIS modules and improved user feedback for r.fillnulls, enhancing debugging and CI reliability. Addressed validation logic in OpenSTEF/openstef’s forecasting models, ensuring accurate horizon checks with regression tests. Emphasized thorough testing, error handling, and data validation throughout all repositories.