docs(mesh-phase4): live gate PASSED — driver nodes run ConfigDb-free

Deploy sealed green with 4 DB-less site nodes acking (central persists acks);
ServiceLevel held 240 on a site node with central SQL stopped (survive-alone);
restarted site node booted last-known-good from the LocalDb pointer, no ConfigDb
read; alarm_condition_state table live + replicated. Full record in
2026-07-23-mesh-phase4-live-gate.md. Task 9 (drop dead table) deferred.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW

docs/plans/2026-07-23-mesh-phase4-cut-driver-configdb.md.tasks.json

@@ -119,12 +119,13 @@
     {
       "id": 11,
       "subject": "Task 11: Live gate",
-      "status": "in_progress",
+      "status": "completed",
       "blockedBy": [
         8,
         9,
         10
-      ]
+      ],
+      "result": "LIVE GATE PASSED \u2014 deploy sealed green w/ 4 DB-less site nodes acking; ServiceLevel 240 w/ central SQL down; restart booted last-known-good from LocalDb pointer; grep proof; alarm_condition_state table live+replicated. Doc: 2026-07-23-mesh-phase4-live-gate.md"
     }
   ],
   "lastUpdated": "2026-07-23"