Developed and delivered the Block Arrow Shape feature for the matrix-neoboard repository, enhancing the toolbar’s drawing capabilities and improving the overall editing experience. The work involved implementing the new shape using React and TypeScript, refining rendering logic for clarity and performance, and expanding unit test coverage to ensure stability. Updates included adjustments to activation areas, PDF rendering, and text layout safeguards, as well as documentation enhancements for both user and CRDT technical guides. The feature was matured from concept to production-ready through collaborative refactoring, resulting in a more intuitive interface and reduced maintenance complexity for future development.