docs(mesh-phase5): live gate PASSED — record + program status DONE

Full 12-stream telemetry mesh formed in Grpc mode, AdminUI pill live (data path
proven), kill-and-reconnect recovered a node's stream in ~5s; Dps baseline dials
nothing. Surfaced+validated the ClusterNode.GrpcPort upgrade-backfill gotcha.

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

docs/plans/2026-07-23-mesh-phase5-grpc-telemetry-stream.md.tasks.json

@@ -16,7 +16,7 @@
     {"id": 9,  "subject": "Task 9: dark-switch central telemetry ingest (Dps bridges | Grpc)",  "classification": "standard",  "status": "completed", "commit": "d15c613e", "blockedBy": [8]},
     {"id": 10, "subject": "Task 10: docs — Telemetry.md, config, supersede §6.3, program status","classification": "small",   "status": "completed", "commit": "e99ea40e", "parallelizableWith": [11], "blockedBy": [9]},
     {"id": 11, "subject": "Task 11: rig telemetry ports + shared key + ClusterNode.GrpcPort seed","classification": "small",   "status": "completed", "commit": "ffb75b78", "note": "port 4056, docker compose config validated", "parallelizableWith": [10], "blockedBy": [6, 9]},
-    {"id": 12, "subject": "Task 12: live gate (panels green over gRPC + kill-and-reconnect)",    "classification": "high-risk","status": "pending", "blockedBy": [10, 11]}
+    {"id": 12, "subject": "Task 12: live gate (panels green over gRPC + kill-and-reconnect)",    "classification": "high-risk","status": "completed", "note": "PASSED — 12-stream mesh, pill live, kill/reconnect recovered; found GrpcPort upgrade gotcha. Record: 2026-07-23-mesh-phase5-live-gate.md", "blockedBy": [10, 11]}
   ],
   "lastUpdated": "2026-07-23T00:00:00Z"
 }