From the current website to learning

This is a demonstration path: the external site confirms payment, then its backend sends an authenticated enrollment to the LMS.

1. The buyer chooses a course on the existing website
2. The website confirms payment with its own gateway
3. An enrollment request reaches the platform API
4. The platform finds or creates the learner
5. The external course is mapped to the internal course
6. The learner opens the portal with a one-time sign-in