Create user
Public self-register. Email must resolve on an MX server (Gmail, X-linked mailbox, or any real domain). MFA PIN is emailed and never printed here.
Google OAuth is off until OAUTH_GOOGLE_CLIENT_ID/SECRET are set in /var/www/lib/index.env.
X OAuth is off until OAUTH_X_CLIENT_ID/SECRET are set in /var/www/lib/index.env.