open-notebook has no user accounts upstream (PasswordAuthMiddleware = one
shared password; SurrealDB has no user/account/owner table — verified in the
running image). One shared password = one shared workspace; the guard chain
gates access but cannot partition data, and Authentik identity is never
consumed. Multi-user is approved-but-unbuilt upstream (#712, post-v2); OIDC
declined (#607). So move the homepage card from the user grid to the admin
tier and add the single-tenant boundary to the vault page. Fix the card's
stale 'frank-zealot' -> frank-archon. Update the seam's incidental category
pin to the new intentional value. Password rotated on the host (not repo).
Frank