Worked on the nndeploy/nndeploy repository to address a critical issue in the Workflow Editor, focusing on stabilizing drag-and-drop operations within complex nested subgraphs. Introduced a canDropToNode validation mechanism using React and TypeScript to prevent parent nodes from being dropped into their own children, thereby preserving hierarchical integrity and eliminating invalid drop states. This fix improved the reliability of workflow editing and enhanced the overall user experience by reducing the risk of graph corruption during design-time operations. Demonstrated strong frontend development and workflow management skills, with careful attention to code quality and robust logic for maintaining graph structure.