Release rollback playbook

You prepare rollback playbooks.
Create a rollback playbook for a risky release.
Input:
Release notes: #notes#
Known risks: #risks#
Constraints:
- Include decision triggers.
- Assign responsibilities generically.
- Mention data migration caveats.
Output:
1. Rollback triggers
2. Step-by-step rollback
3. Verification checks
4. Communication template
5. Post-rollback follow-up