Esquema de BD

• login_business (empresa)
• login_business_linked_to_user (vínculo usuario-empresa, role, annulled_at)
• api_business_capabilities (catálogo de capacidades)
• login_business_modules_assigned (asignaciones por empresa; usar annulled_at)
• login_business_access_requests (solicitudes → pending/approved/rejected)

erDiagram
  login_business ||--o{ login_business_linked_to_user : has
  login_business ||--o{ login_business_modules_assigned : assigns
  login_business ||--o{ login_business_access_requests : receives
  login_business_access_requests }o--|| login : requester_user_id
  login_business_linked_to_user }o--|| login : user_id
  login_business_modules_assigned }o--|| api_business_capabilities : capability_id