Consumer plans are billed securely via Stripe in your browser — the iOS app is for watching and CPI rewards.
Deploy this folder to auth.spaidz.com (S3 + CloudFront). Include
subscription-success.html, subscription-cancel.html,
creative-onboarding-success/cancel for Stripe return URLs.
Set Lambda SPAIDZ_AUTH_WEB_ORIGIN if needed.
Pay securely with Stripe, then return to the Spaidz app.