OK. App server is running.

API Endpoints:
  GET /v1/catalog/products?cursor=&limit=25&lang=en|ar
  GET /v1/catalog/products?sku=MK4820b (single product by SKU)
  GET /health
  GET /menus (all menus with nested items)
  GET /menu-path-by-sku?sku=MK4820b (product name + menu hierarchy)
  GET /debug/sku-lookup?sku=MK4820b (test SKU lookup, no auth)
  GET /debug/partner-products
  GET /debug/menu
  GET /debug/translations?product_id=GID&locale=en

OAuth:
  /auth?shop=YOURSTORE.myshopify.com