fix(sre): name backup verifier in closure receipt

docs/operations/sre-k3s-controlled-automation-work-items.snapshot.json

@@ -820,6 +820,7 @@
       "exit_condition": "closure requires all learning acknowledgements on the same run",
       "confirmed_truth": [
         "source and focused tests bind typed verifier outcomes to same-run Telegram, KM, RAG, MCP, PlayBook and backup DR scorecard acknowledgements",
+        "Backup/restore recipient-visible recovered cards name Agent99 BackupCheck as the read-only executor and backup_restore_readback_verifier as the typed independent verifier; apply remains not_applicable and the final durable closure receipt is required",
         "BackupCheck learning assets are reconciled idempotently as read-only DR evidence rather than controlled repair"
       ],
       "runtime_gaps": [