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/2026-07-22-per-cluster-mesh-program.md

@@ -202,7 +202,7 @@ Phase 4 as code-complete, not verified, until this lands.**
 **no ConfigDb connection string configured at all**; grep-level proof no driver-branch service can
 resolve the ConfigDb context.
 
-### Phase 5 — gRPC stream contract for live telemetry — **code-complete on `feat/mesh-phase5`, live gate pending**
+### Phase 5 — gRPC stream contract for live telemetry — **DONE 2026-07-23 (live gate PASSED)**
 **Scope as shipped (narrowed from the program sketch's "seven observability topics," settled with the
 user 2026-07-23 — mirrors how Phases 1 and 3 also honestly scoped down):** one server-streaming gRPC
 contract carrying a `oneof` event with **four** kinds, **driver nodes host the gRPC server (dedicated
@@ -317,6 +317,6 @@ resource sizing on the site VMs should be checked once both products run the ful
 | 2 ClusterClient transport | **DONE 2026-07-22** (live gate PASSED, shipped dark) — shipped dark (`MeshTransport:Mode=Dps` default), both comm actors registered in both modes. Corrections: `SendToAll` not `Send`, one fleet-wide client not one per cluster, `/user/node-communication` not `/user/cluster-communication`. The gate's "Ask timing out" item does not exist to test — no cross-boundary Ask in this phase; see the phase section. |
 | 3 fetch-and-cache | **DONE 2026-07-23**, merged `d01b0695`, live gate PASSED, pushed to origin (scadaproj umbrella index updated + pushed `b5e7bc8`). gRPC fetch RPC + shared node key; dark switch `ConfigSource:Mode` (Direct default). Rig flip: `OTOPCUA_CONFIG_MODE=FetchAndCache` on the site nodes. See `2026-07-22-mesh-phase3-config-fetch-and-cache.md`. |
 | 4 cut driver ConfigDb | **DONE 2026-07-23 — live gate PASSED** on `feat/mesh-phase4` (Tasks 0–8 + 1b + 10–11; Task 9 table-drop deferred). ConfigDb admin-only; driver-only ⇒ FetchAndCache (validator); `DbHealthProbeActor` not spawned driver-only (client-visible ServiceLevel 240/250 with central SQL down — proven live); alarm condition state in replicated LocalDb `alarm_condition_state`; central persists acks; `OpcUaPublish` guard split fixes the driver-only address-space wipe; driver-only LDAP maps from appsettings only (6th consumer found mid-phase). Gate: deploy sealed green w/ 4 DB-less site nodes acking, ServiceLevel held 240 w/ SQL down, restart booted last-known-good from the LocalDb pointer. See `2026-07-23-mesh-phase4-cut-driver-configdb.md` + `2026-07-23-mesh-phase4-live-gate.md`. |
-| 5 gRPC telemetry | **code-complete (live gate pending)** on `feat/mesh-phase5`. 4-channel scope (`alerts`/`script-logs`/`driver-health`/`driver-resilience-status`), 3 deferred with rationale (`redundancy-state`, `fleet-status`, `deployment-acks`); dark switch `Telemetry:Mode`/`TelemetryDial:Mode` (Dps default); auth-from-day-one fail-closed bearer key, superseding design §6.3. See `docs/Telemetry.md` + `2026-07-23-mesh-phase5-grpc-telemetry-stream.md`. |
+| 5 gRPC telemetry | **DONE 2026-07-23 — live gate PASSED** on `feat/mesh-phase5`. 4-channel scope (`alerts`/`script-logs`/`driver-health`/`driver-resilience-status`), 3 deferred with rationale (`redundancy-state`, `fleet-status`, `deployment-acks`); dark switch `Telemetry:Mode`/`TelemetryDial:Mode` (Dps default); node hosts server / central dials; auth-from-day-one fail-closed bearer key, superseding design §6.3. Gate: full 12-stream mesh formed in Grpc mode (2 inbound per driver node, 6 outbound per central), AdminUI pill live (data path proven), kill-and-reconnect of a node recovered its stream in ~5s; Dps baseline dials nothing. Surfaced an upgrade gotcha — `ClusterNode.GrpcPort` must be populated on existing deployments (fresh installs seed it; nullable column doesn't backfill) — which live-validated the graceful null-`GrpcPort` skip. See `docs/Telemetry.md`, `2026-07-23-mesh-phase5-grpc-telemetry-stream.md` + `2026-07-23-mesh-phase5-live-gate.md`. |
 | 6 mesh partition + co-location | not started |
 | 7 drill + live gates | not started |