perf(scene): make geometry edits incremental

Avoid full document, cache, and GPU rebuilds for entity deltas so add, delete, history, selection, and live polyline edits stay responsive on large drawings.

src/app/commands/inquiry.rs

@@ -453,7 +453,9 @@ impl OpenCADStudio {
                 self.grip_hover = None;
                 self.grip_popup = None;
                 self.visibility_popup = None;
-                self.tabs[i].scene.bump_geometry();
+                // Entering BEDIT changes which block is assembled, not the
+                // cached geometry of that block's entities.
+                self.tabs[i].scene.bump_geometry_no_blocks();
                 // Frame the camera on the block's own geometry (block-local, near
                 // origin) — fit_all() goes through current_layout_block_handle so
                 // it already scopes to the edited block. Without this the view