The app shell with a labelled sidebar instead of the icon rail: AppShell navigation="sidebar".

• The sidebar sits on the dark frame, the page on the light sheet, with the side panel and dock as in every other shell.
• sidebarGroups takes the same groups as Sidebar; without it, nav becomes one group.
• workspaces puts a WorkspaceSwitcher at the top, user and userMenu a UserMenu at the foot; both turn compact when the sidebar collapses. Further Sidebar props go in sidebar (storageKey, shortcut, linkAs).
• On phones the sidebar becomes a drawer behind a menu button above the page.