- ValueType::Parametric; the node input carries the whole curve set as
NodeValue::Text(JSON) so undo and project serialization come for free
- translation pass builds the input with the default-curve JSON and the
dimension/range/ui-colour properties
- edits flow both ways: node input (UI) -> curves_from_json ->
set_ofx(Parametric) on the instance; plugin-side Set/Add/Delete ->
notify_instance_changed -> JSON written back to the input (undoable)
- screenshot example: gate the macOS-only offscreen capture items so
the workspace tests build on Linux/Windows
Mike-Solar
a43302d9b7