Auth Onboarding Bootstrap Existing Member To Shell

EPIC: auth

Authentication

STORY: onboarding_bootstrap

Session restore resolves the auth user via an identity-scoped bootstrap and lands an existing member on the shell.

AC: existing_member_to_shell

When bootstrapSession returns a household, the guard proceeds to Home — Setup is never shown and no household is created.

existing member — on Home, no Setup

Expect: bootstrap returned a household → guard proceeds to Home an existing member is never sent through Setup