- Split the rail into a content group (Feed/Channels/Playlists) and an admin
group (Stats/Scheduler) separated by a divider (system group hidden for non-admins).
- Move the language switcher, About and notification bell out of the top header
into an icon cluster above Settings (horizontal expanded, vertical collapsed).
Their popovers portal to <body> and anchor right + above the button, escaping the
nav's backdrop-filter. About is removed from the account popover (now in the cluster).
- LanguageSwitcher/NotificationCenter gain a 'rail' variant for the above.
- Also relocate the Toaster mount into the (now relative) content column.
peter
7a5f52a89b