docs: add scope labels to deployment runbooks and postmortem checklists

docs/DOCUMENTATION_MIGRATION.md

@@ -22,6 +22,11 @@ See [Platform Overview](PLATFORM_OVERVIEW.md) for terminology.
 - `frontend-comparison.md`
 - `BUSINESS_ANALYTICS_MAPS_PLAN.md`
 - `goal.section.md`
+- `DEPLOYMENT_GUIDE.md`
+- `DDC_DEPLOYMENT_RUNBOOK.md`
+- `HUAHIN_DEPLOYMENT_RUNBOOK.md`
+- `KITTISAK_DEPLOYMENT_RUNBOOK.md`
+- `TENANT_PROVISIONING_POSTMORTEM_CHECKLIST.md`
 
 These documents now introduce DBK Platform before mentioning HomAroma and explain
 the platform/tenant boundary.