* fix: forbid superadmin job tokens from global user and token management
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix: extend superadmin job token guard to offboard and export routes
Apply forbid_superadmin_job_token to offboard_global_user and
export_global_users, the remaining global user-management routes that
were gated only by require_super_admin. Offboarding can delete a user
along with their tokens, password, invites and instance-group
membership, and export returns every user's password_hash, so both must
be unreachable by a superadmin job token.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>