fix(point): preserve relative marker sizing

Keep rendering, picking, block transforms, and plotted output on the
same viewport-relative PDSIZE geometry without overloading wire width
fields.

src/modules/annotate/qdim.rs

@@ -93,6 +93,7 @@ impl CadCommand for QdimCommand {
         }
         let d = 0.5_f32;
         Some(WireModel {
+            point_marker: None,
             taper_widths: Vec::new(),
             world_width: 0.0,
             depth_override: None,