With registrations closed, the web UI's Create account button opens a
"registrations closed" dialog; when open it links to the configured
sign-up URL (SSO_ACCOUNT_SIGN_UP = www.eom.dev/members). OMNIAUTH_ONLY
still disables local sign-up, so accounts are created only via Dex.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
