syncLocalUserFromAgnet rewrites users.group with the channelId returned
by Agnet's /me on every web /sign-in. That's correct for normal users —
their channel membership is owned by the Agnet identity service. But
platform administrators (RoleRootUser) are provisioned out-of-band:
operators set their group to "default" (or whichever billing tier)
manually, and their NewAPI abilities exist there.
When a root admin logs in via the web, Agnet returns a stub channelId
that has no abilities rows. The current code overwrites users.group
with that stub, and the next /v1/models call returns an empty list —
the desktop client then falls back to providerPresets.defaultModels,
hiding the real model catalogue from the operator.
Add a role guard so the rewrite only fires for users below root. Root
admins keep whatever group an operator set in the DB.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>