will
41475f4a5a
Replaces the gumroad_url stub with an on-site embedded checkout (buy button -> POST to the bookshop backend -> mounted Stripe iframe), following the existing contact/submissions form's fetch/status-message pattern. Adds thank-you and resend-link pages, an example book template (draft), and updates the privacy policy and terms to honestly disclose Stripe as a third-party payment processor.