The SCIM update_user (PUT) and patch_user (PATCH) handlers mapped the SCIM active field
unconditionally onto the role column (role = 'user' if active else 'pending'), so a routine
IdP sync or a misconfigured IdP that marked a locally-provisioned admin inactive would
silently strip that admin's role and could lock an instance out of its own administration.
Gate both active->role assignments on user.role != 'admin' so SCIM provisioning can
activate/deactivate ordinary users but never demotes an existing admin; admin role changes
continue to go through the dedicated admin endpoints. SCIM already cannot promote to admin
(active only maps to user/pending), so this is symmetric.
Credit to @HOHK0923 for surfacing the admin-demotion footgun.
Co-authored-by: HOHK0923 <118590749+HOHK0923@users.noreply.github.com>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
