The role column was a pre-RBAC artifact. All authorization now flows
through explicit group membership and permission grants:
- Everyone group: all users added on creation (no implicit membership)
- Admins group: grants surface.admin.access + all platform permissions
- JWT claims, login response, profile: role field removed
- OIDC: isIdPAdmin() maps IdP claims → Admins group (no role writes)
- Admin UI: role dropdown removed, admin managed through groups
- Middleware cache simplified to isActive only
28 files changed, -79 lines net. Zero magic roles.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
