This one handles the heavy lifting for building complex ReactFlow apps with collapsible tree structures and large node counts. It gives you patterns for incremental rendering so you're not rebuilding the entire graph on every expand/collapse, memoization strategies to prevent unnecessary re-renders, and a reducer-based state system with undo/redo. The hierarchical navigation approach is solid if you're building process diagrams or org charts where users drill down through layers. Also includes Dagre auto-layout integration and a focus mode that isolates selected nodes. The code examples are production-oriented rather than toy demos, which is refreshing.
npx skills add https://github.com/sickn33/antigravity-awesome-skills --skill react-flow-architect