- Add fulfillmentOrderReportProgress GraphQL mutation for 3PLs and fulfillment apps to report order progress with optional reasonNotes
- Introduce fulfillment_orders/progress_reported and fulfillment_orders/manually_reported_progress_stopped webhooks to track progress reporting and its reversal
- supportedActions now includes REPORT_PROGRESS and merchant‑managed orders need write_merchant_managed_fulfillment_orders scope