Products, orders, payments, webhooks
Most-used REST groups and IPN notes.
Stores and products hang under /stores/:storeId/…
Checkout: POST /stores/:storeId/orders with an idempotencyKey for online pay.
Payments: GET /payments/config; IPN POST /payments/webhook/sslcommerz is the source of truth.
Admin money tools: /platform/admin/order-payments and payment-disputes.