At this level
ai.newnal.illi.account.parent ยท 2- ai.newnal.illi.account.parent.signIn procedure Sign a parent account in to ILLI from the device without the PDN's OAuth sign-in and consent screen: the device presents the parent's scoped deviceApp app password (which it keeps) and its attestation; the Service Agent Node opens the delegated session, joins the account to the service sphere on first use and returns the device-app session. Used at first connection and at every re-login.
- ai.newnal.illi.account.parent.startOAuth procedure Start a parent's OAuth sign-in on the device through the PDN's own page (BFF), for an existing Newnal ID whose credentials are typed on the PDN page. Device-created accounts, and existing ones whose credentials the device app takes itself, sign in with account.parent.signIn instead. client=native ends with a one-time code on the device app's App Link for account.exchangeCode instead of a cookie.