Read https://studid.io/llms.txt and add academic verification with Studid.
1. On signup, POST https://api.studid.io/v2/auth/verification with { secretToken, redirectUrl, serviceName } and redirect the user to the returned link.
2. After they return to redirectUrl, poll GET https://api.studid.io/v2/auth/verification/{id} with header "Authorization: Bearer <secretToken>" and use session.authIdentifier as the user's ID.
3. Reject session.test === true in production.