Follows the developer/api → API Reference carve-out: placement-only, no
file paths or URLs change. placeDoc routes user/devices/* to a new
top-level "Devices" section (icon: device) and user/admin-* to a new
top-level "Administration" section (icon: shield); User Guide keeps its
direct guides with no groups. Sidebar order: Getting Started, User
Guide, Devices, Administration, API Reference, Developer, Operations,
Contributing.
Verified live: on kobo-setup the Devices section opens with the three
device guides; on admin-guide Administration opens with both admin
guides; on user/dashboard User Guide opens as before. Tests
(TestPlaceDoc, TestBuildNavigation) updated to pin the new placement.