During January 2026, Code Builder contributed to the frappe/frappe repository by enhancing ListView stability and improving the user experience of the column selection dialog. They addressed a runtime crash by validating column types before accessing field names, ensuring non-Field columns no longer caused errors. Code Builder also implemented bulk column management with Select All and Unselect All options, refining checkbox logic for safer and more maintainable UI interactions. Their work included refactoring functions to use mobile_field_columns, resolving lint issues, and applying Prettier formatting. These contributions, using JavaScript, HTML, and UI/UX design skills, improved code maintainability and developer velocity.