Close a major incident with a post-incident review

Reinforce ITIL major-incident close from incident-management training. The incident is not closed until service is restored, the PIR is scheduled, and the status page is updated.

1. Confirm restoration against the success criteria.
2. Update the status page.
3. Update the requester.
4. Capture a timeline while it is fresh.
5. Schedule the post-incident review.
6. Link related problems or known errors.
7. Do not close the ticket while a workaround is still the only path and no PIR is booked.