ai.newnal.illi.account.family.signIn

Sign a family member in to ILLI from the native family app without the PDN's OAuth sign-in and consent screen: the app presents the member's scoped familyApp app password (which it keeps) and its platform attestation; the Service Agent Node opens the session, joins the account to the service sphere on first use and returns the family session. Used at first connection and at every re-login. Web clients use the OAuth BFF (/oauth/login) instead.