QA targets for the newest UX reports (pending until their owners land): s37 browser chevrons on every node kind (all toggle; no Joints folder yet), s38 view animations to Top/Bottom end without a jump (the last frame turns 22.5 degrees today), s39 view cube edge/corner hover lights 2/3 patches, s40 toolbar Pin/Remove/reorder survive a restart and the workspace switcher spans the toolbar; ui_layout tests: every command dialog docked right at 260-380 px (or 480-560 for tables; the exploded view is 635), other windows fit on screen. Harness: published rects and counts, browser rows/fold arrows as handles, camera and view_anim steps, ui.at cube points, settings carried over a close restart, an adhoc scenario runner

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL

crates/ui-egui/src/browser.rs

@@ -281,6 +281,7 @@ fn draw_row(ui: &mut egui::Ui, id: egui::Id, row: &Row) -> RowResp {
         };
         ui.painter().add(egui::Shape::convex_polygon(pts, t.text_dim, Stroke::NONE));
         out.fold = ui.interact(ar.expand(3.0), id.with("fold"), Sense::click()).clicked();
+        crate::scenario::publish_handle(&format!("fold:{}", row.label), ar.center());
     }
     x += 14.0;
     // Eye.
@@ -322,6 +323,7 @@ fn draw_row(ui: &mut egui::Ui, id: egui::Id, row: &Row) -> RowResp {
         badge(ui.painter(), br, b, t.text_dim);
         bx += 15.0;
     }
+    crate::scenario::publish_handle(&format!("row:{}", row.label), r.center());
     out.resp = Some(resp.clone());
     out.clicked = resp.clicked();
     out.double = resp.double_clicked();