- bootstrap _assign_if_missing no longer reactivates revoked UserRole rows
- revoke_role uses SELECT FOR UPDATE + pg_advisory_xact_lock to prevent TOCTOU race on last-superadmin check
- block self-revocation of superadmin role
- block is_active/level changes on system roles
- block expires_at on superadmin role assignments
- single SUPERADMIN_LEVEL constant in crud/rbac.py, imported everywhere
- get_superadmin_count excludes expired assignments
- removed dead UserRoleCRUD.revoke_role method
- warn when revoking RBAC role from a legacy ADMIN_IDS user
- added migration 0043: indexes on user_roles.role_id, access_policies.role_id, lower(users.email)
Fringg
9dd6b54c6e