feat(annotation): show all scales on highlight

src/scene/mod.rs

@@ -1485,6 +1485,10 @@ pub struct Scene {
     /// id — one slot would thrash between them every frame.
     sdf_text_cache:
         RefCell<HashMap<u64, std::sync::Arc<Vec<crate::scene::pipeline::text_gpu::TextVertex>>>>,
+    /// Extra scale representations for highlighted annotative entities. These
+    /// stay outside the resident wire set so rollover and selection never
+    /// invalidate normal geometry, picking, or snapping caches.
+    annotation_highlight_cache: RefCell<HashMap<u64, Arc<Vec<WireModel>>>>,
     /// Per wire-source `(geometry_epoch, gathered text)` of the most recent
     /// SDF-text build. When a new content id misses the cache but the journal
     /// shows no text-bearing entity changed since that epoch, the same glyphs
@@ -1915,6 +1919,7 @@ impl Scene {
             }]),
             active_model_tile: std::cell::Cell::new(0),
             sdf_text_cache: RefCell::new(HashMap::default()),
+            annotation_highlight_cache: RefCell::new(HashMap::default()),
             last_sdf_text: RefCell::new(HashMap::default()),
             // One pane mapped to tile 0 — matches the single default tile above.
             model_panes: iced::widget::pane_grid::State::new(0).0,