{
  "ok": true,
  "service": "pie-orders-returns-purshades",
  "auth": {
    "install": "GET /auth?shop=your-store.myshopify.com",
    "callback": "GET /auth/callback (set this URL in Shopify Dev Dashboard)"
  },
  "endpoints": [
    "POST /v1/orders — create draft order from form",
    "POST /v1/returns — create return-charge draft order + invoice",
    "POST /v1/draft-orders/:id/invoice — resend invoice email"
  ]
}