React Flow Overview Use this skill to build, customize, debug, and optimize interactive node-based UIs with React Flow (@xyflow/react v12+). Covers everything from basic setup to advanced patterns like computed flows, sub-flows, and external layout integration. Version and source policy Guidance reviewed against 12.12.0 on 2026-09-28 . Check the target project's installed version and lockfile before applying an API; “v12+” does not mean every minor release has every feature. Preserve the project's state and styling choices unless the task requires changing them. Use the official documentation…