moon-love checkout backend

This Netlify project hosts three serverless functions powering the custom bundle checkout on moon-love.store:

• /.netlify/functions/create-checkout — creates a Whop checkout session with bundle metadata
• /.netlify/functions/check-payment — polls Whop to detect payment completion
• /.netlify/functions/whop-order-sync — Whop webhook → creates Shopify order with bundle line items

See README.md in the repo for deployment + setup.