Progred has native macOS and Linux shells plus a browser shell. They enter the same Rust application rather than reimplementing the editor. An iPad feasibility host was removed; see its notes.
The browser build requires HTTPS and cross-origin isolation for shared-memory workers; plain LAN HTTP is no longer sufficient. See the browser host.
A visionOS version is interesting specifically for CAD/CAM: the same GID/Grap model could project into spatial geometry while ordinary windows retain source, parameters, and other editor projections. This should be treated as a spatial projection/backend design, not merely the two-dimensional editor placed in a headset.
Questions for that spike include the RealityKit/Metal boundary, spatial selection and manipulation, and how existing source-to-output provenance maps onto three-dimensional geometry. None requires changing the GID or Grap model in advance.