My custom e-commerce store runs on a PHP front-end with a few Node.js services and an in-house CRM. I want it to talk seamlessly to the Delhivery One courier system using their latest REST API. Scope • Wire the site to Delhivery One so I can create shipments, auto-generate shipping labels, and receive real-time tracking updates—all from inside our existing order dashboard. • Enable the same flow for both domestic and international orders. • Keep things lean: no fancy UI redesign—just functional endpoints, webhook handling, and a brief setup guide so my team can replicate the steps on staging and production. Tech notes • The store already exposes authenticated REST routes; you can plug in with PHP cURL or a lightweight Node.js helper, whichever is faster. • All keys and sandbox credentials will be provided once we start. Deliverables 1. Clean, well-commented code (PHP or Node.js) that hits Delhivery endpoints for create order, generate label, and track shipment. 2. Webhook/cron script that pulls tracking events back into our CRM. 3. A short README showing install steps, config variables, and two test cases (one domestic, one international). I’m aiming for a quick, basic integration that just works—no extra bells and whistles—so please keep proposals focused on that outcome and your timeline.