{"message":"Order Tracking API","endpoints":{"POST /api/shipments/create":"Create a new shipment","GET /api/shipments/track/:trackingNumber":"Track a shipment","POST /api/shipments/:shipmentId/events":"Add tracking event","POST /api/tracking/create":"Create order tracking","GET /api/track/:slug":"Get order tracking (public) - slug format: {hash}-{trackingNumber}","POST /api/fulfill/shopify":"Fulfill order in Shopify with tracking","POST /api/admin/fix-tracking-urls":"Fix old tracking URLs (replace Vercel domain with track.japanpost.co)","GET /api/health":"Health check","GET /api/debug":"Debug environment variables"}}