👥 Organizations
Real B2B software is multi-tenant: a customer is an organization with members who hold a role (owner > admin > member). This is classic RBAC — role-based access on a tenant — distinct from the FGA/ReBAC lab's per-document relationships.
Admins invite people by email; only an owner can ever grant the owner role, and an admin can never touch a peer or superior. An org can never lose its last active owner — every guardrail below is enforced server-side, not just hidden in this UI.