All email sending now uses mail.rmail.online as the SMTP host,
replacing the legacy mx.jeffemmett.com hostname.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The v2 API uses products array with catalog source, nested layers in
placements, and GET /mockup-tasks/{id} for polling. Also removes
hardcoded domain in favor of PUBLIC_URL setting.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>