Native Kobo sync is implemented server-side but not yet supported on
real devices, so stop documenting it as a working feature.
- Rewrite kobo-setup.md as a coming-soon stub: point users to KOReader
(which runs on Kobo hardware) as the supported path today, and list
what native sync will deliver when released
- Add 'Coming Soon' status banners to the Kobo protocol spec, all five
Kobo endpoint docs, and both API references, noting the endpoints are
under active development and may change
- Tag the device shelf endpoints as pending native Kobo support
john-okeefe
26f1f98736