The desktop sidebar's footer now reads New Notebook, Open Existing and
Options, as the web build's does; macOS left Options to the application
menu. New iCloud Notebook goes from the footer and the welcome page with
its naming dialog: New Notebook's panel already opens in Snowbound's
iCloud Drive folder, and a notebook saved there appears on every Mac by
itself. iOS already offers one New Notebook that creates in iCloud Drive
where it is on.

Assisted-by: claude-opus-5.5