09 — Security & Compliance

Roles: super_admin, tenant_admin, member; guest upload via signed tokens.
Policies: all tenant-owned models gated; Super Admin bypass via explicit ability.
Audit: record impersonation and destructive actions with actor, target, reason.
Logging: structured, no PII; add request/trace IDs; redact secrets.
GDPR: retention settings per tenant; deletion workflows; legal pages managed via CMS-like resource.
Rate limits: per-tenant, per-user, per-device; protect upload and admin mutations.