fix(scene): clear selection after erase

src/app/commands/dim.rs

@@ -334,7 +334,9 @@ impl OpenCADStudio {
                     n += 1;
                 }
                 // Draw the text in front of its newly-added masks.
-                self.tabs[i].scene.selected = handles.iter().cloned().collect();
+                self.tabs[i]
+                    .scene
+                    .replace_selection(handles.iter().cloned().collect());
                 self.tabs[i].dirty = true;
                 self.command_line
                     .push_output(&format!("TEXTMASK: masked {n} text object(s)."));

src/app/commands/view.rs

@@ -754,7 +754,7 @@ impl OpenCADStudio {
                         .push_info(&format!("{cmd}: no text or dimension objects."));
                     return Some(Task::none());
                 }
-                self.tabs[i].scene.selected = handles;
+                self.tabs[i].scene.replace_selection(handles);
                 return self.dispatch_view(
                     if to_front {
                         "DRAWORDER FRONT"

src/app/history.rs

@@ -875,7 +875,13 @@ impl OpenCADStudio {
             .copied()
             .filter(|h| scene.document.get_entity(*h).is_some())
             .collect();
-        scene.selected = restored;
+        scene.replace_selection(restored);
+        if scene
+            .hover_highlight
+            .is_some_and(|handle| scene.document.get_entity(handle).is_none())
+        {
+            scene.set_hover_highlight(None);
+        }
         // Entity deltas currently preserve the layout; direct assignment avoids
         // clearing layout render caches between steps and keeps future widened
         // deltas batchable.
@@ -903,11 +909,13 @@ impl OpenCADStudio {
         let mut affected = scene.object_isolation.hidden.clone();
         affected.extend(state.hidden.iter().copied());
         scene.object_isolation = state.clone();
-        scene.selected = selected
-            .iter()
-            .copied()
-            .filter(|handle| scene.document.get_entity(*handle).is_some())
-            .collect();
+        scene.replace_selection(
+            selected
+                .iter()
+                .copied()
+                .filter(|handle| scene.document.get_entity(*handle).is_some())
+                .collect(),
+        );
         let changes: Vec<_> = affected
             .into_iter()
             .map(|handle| (handle, crate::scene::ChangeKind::Modified))

src/app/update/file.rs

@@ -801,7 +801,9 @@ pub(super) fn on_open_file(&mut self) -> Task<Message> {
                 if let Some(prepared) = prepared_geometry {
                     self.tabs[i].scene.install_prepared_open_geometry(prepared);
                 }
-                self.tabs[i].scene.selected = rustc_hash::FxHashSet::default();
+                self.tabs[i]
+                    .scene
+                    .replace_selection(rustc_hash::FxHashSet::default());
                 self.tabs[i].scene.preview_wires = vec![];
                 // Reopen in whichever space the file was saved in — the CTAB
                 // tab name when recorded, else the $TILEMODE model/paper flag —