A comprehensive API reference that maps SceneKit classes, properties, and methods to their RealityKit equivalents. This is exactly what you need when migrating an existing SceneKit project to RealityKit and you're trying to figure out where SCNNode went or how to replicate specific material properties. The skill covers the architectural shift from scene graph to ECS, which is honestly the hardest conceptual leap in the migration process. With 948 stars and 133 installs, it seems to have found its audience among iOS developers dealing with Apple's 3D framework transition. Think of it as a Rosetta Stone rather than a tutorial.
npx skills add https://github.com/charleswiltgen/axiom --skill axiom-scenekit-ref