feat(frame): complete frame controls

Preserve frame geometry for selection while separating viewport and plot visibility across supported reference entities.

Refs #642

src/modules/model/primitive_cmd.rs

@@ -514,6 +514,8 @@ fn wire(name: &str, points: Vec<[f32; 3]>) -> WireModel {
         taper_widths: Vec::new(),
         world_width: 0.0,
         depth_override: None,
+        display_visible: true,
+        plot_visible: true,
         fill_is_3d: false,
         fill_is_2d_solid: false,
         render_instance: None,