docs: add source-provenance comment to disaster-recovery (card [91] backfill 6/16)

docs/disaster-recovery.md

@@ -1,3 +1,9 @@
+<!-- verified: 2026-09-06
+     iac@49ff427 : ansible/roles_metadata.yml
+     ansible@ccbda37 : roles/os_update, playbooks/os_update_vms.yml, playbooks/os_update_pve.yml, playbooks/os_update_pbs.yml, playbooks/app_update.yml
+     trilium : xJRSQovMncQr, 6AbdS9cUE45T, bW84ccRoAJ5i, p45qNP2sIuhA, 6oESvJYzj1at
+-->
+
 # 🧯 Disaster Recovery & Upgrades
 
 > [!NOTE]