- Paste, Paste Options, Cut and Copy are one Clipboard menu at every width.
- The text group runs Styles, font, size, B I U, then Text Effects, highlighter, font colour
  and Format Painter on one face with no divider; that tail folds inside the group, which
  the ui kit now allows: a row folds groups inside its boxes sized by their children.
- Styles gets an "Aa" icon. A group's trailing "more" arrow is a 14-pt button, so the
  group ends as tight as one ending in an icon.
- Page Color follows the drawing tools; the row ends in sync status and the view menu,
  which also lists zoom and Page Color.
- Back and Forward stand before the notebook button at the tab row's start and, with the
  sidebar open, at its top right. The sidebar reads "My Notebooks", and its button shows a
  close cross over the tree's icon column.
- Zoom is a joined − 100% + control left of the search box; clicking the level edits it
  (Enter zooms to the percentage, Escape keeps the zoom). It folds away first.
- The toolbar row ends 4 pt short of the 38-pt title bar its buttons centre in, so the tabs
  sit closer, on every platform.
- Presses inside a toolbar group, a faded button included, never drag or zoom the window;
  on macOS the view tells AppKit it never moves the window, and a double click follows
  Desktop & Dock's minimize or zoom setting.

The least window on macOS is 615 pt, from 626.

Assisted-by: claude-opus-5.5