Merge remote-tracking branch 'origin/main' into codex/region-measurement-persistence

# Conflicts:
#	src/app/doc_api.rs

src/app/automation.rs

@@ -317,6 +317,8 @@ impl OpenCADStudio {
                         let i = self.active_tab;
                         self.tabs[i].scene.clear();
                         self.tabs[i].scene.document = doc;
+                        self.tabs[i].scene.load_sketch_constraints_from_document();
+                        self.tabs[i].scene.load_named_parameters_from_document();
                         self.tabs[i].scene.material_base_dir = path_buf.parent().map(PathBuf::from);
                         crate::app::style_ops::ensure_standard_styles(
                             &mut self.tabs[i].scene.document,
@@ -1604,4 +1606,3 @@ mod tests {
         assert_eq!(app.tabs[0].active_cmd.as_ref().map(|c| c.name()), Some("MTP"));
     }
 }
-