Merge remote-tracking branch 'origin/main' into plugin/host-model-api

src/app/layers.rs

@@ -83,6 +83,8 @@ impl OpenCADStudio {
             .layers
             .layers
             .iter()
+            // The reference's hidden system layers (`*ADSK_CONSTRAINTS`) stay out.
+            .filter(|l| !l.name.starts_with('*'))
             .map(|l| crate::ui::ribbon::LayerInfo {
                 name: l.name.clone(),
                 color: crate::ui::window::layers::iced_color_from_acad(&l.color),