During December 2025, Tung Nguyen modernized the Annotation Editor UI in the grafana/grafana repository by replacing the legacy gf-form layout with a Stack-based component architecture. This refactor, implemented using React and TypeScript, aligned the editor with the Grafana design system, improving layout consistency and maintainability. Tung also removed deprecated code paths, such as the old gf-form usage in the OpenTSDB Annotation Editor, and performed targeted code cleanup, including typo correction and elimination of obsolete ESLint suppression rules. The work reduced technical debt, streamlined the codebase, and enhanced the user experience for annotation features, supporting faster future enhancements.