The new-ui redesign replaced the top header with a sidebar and removed
the Settings pages.
- Replace all 'Settings → Devices' paths with the Devices page in the
sidebar
- Conflicts are resolved from the book detail page's Sync Progress
button or the Conflicts page (/conflicts); drop the nonexistent
'Settings → Conflicts' path
- Queue status and unlinked-book references no longer invent per-device
button paths that don't exist on the Devices page
- Reading history now points to the Progress page / book detail
- Export FAQ no longer references a Settings → Export flow that isn't
in the UI