docs: truth sweep — retire stale registers, reconcile ledgers with shipped state

- deferred.md: DELETED (git rm) — stale 2026-07-10 duplicate of the canonical
  deferred-work register; this completes archreview R2-08 T11 (the file was
  tracked, not untracked as the task assumed)
- ScadaBridge-docs-issues.md, ScadaBridge-docs-fixed.md: DELETED (git rm) —
  generated 2026-07-10 CommentChecker reports, already consumed; completes
  R2-08 T13 (also tracked, not untracked)
- stillpending.md: prepended historical-snapshot banner (2026-06-15 audit;
  Tier-1 table is not current open work)
- docs/plans/phase-8-checklist.md: replaced the unevidenced 'Complete / All
  passing' stub with the honest state per register row 25 (WP-4 target-scale
  load test never run)
- archreview/plans/00-MASTER-TRACKER.md: R2-01 T2 live failover drill
  annotated RESOLVED 2026-08-01 (PLAN-R2-01 T4 + docker/failover-drill.sh +
  SbrFailoverTests); R2-08 T11/T13 recorded completed by this sweep
- docs/plans/2026-07-22-clusterclient-to-grpc-plan.md: P3 deferred-RPCs note
  updated (all four live-proven 2026-08-01, 1c99d6fa); ClusterClientSiteAuditClient
  naming follow-up marked DONE (63c16d69)
- docs/plans/2026-05-28-opcua-tag-browser.md.tasks.json: Task 19 flipped to
  completed (manual smoke PASS 2026-08-01, 6dc5d94c)
- archreview/plans/PLAN-R2-0[1-8]*.tasks.json: all-pending manifests reconciled
  with the authoritative tracker (round 2 merged @ 1930f19b) — flipped to
  completed except R2-08 T1/T2 which remain pending needs-user
- docs/operations/2026-07-16-secrets-clustered-master-key.md: correction banner
  (SQL-hub replication shipped 8e12f994; KEK-rotation + clustered-secrets
  runbooks ship with ZB.MOM.WW.Secrets)
- docs/plans/2026-07-19-localdb-phase2-live-gate.md: external-system-delete
  observation annotated RESOLVED (2d03f2d5 reconciles deletions incl.
  external_systems)

Claude-Session: https://claude.ai/code/session_014WNM4vjoVksyyBraTXSZE1

docs/plans/2026-07-22-clusterclient-to-grpc-plan.md

@@ -324,11 +324,11 @@ Critical path ≈ 1B: **~4–6 weeks total**, matching the design estimate.
 
 **Phase 2 ∥ 3 — cutover + soak**
 - [x] P2 All sites `CentralTransport=Grpc`; central-kill S&F soak (no loss/dupes), failback observed, health sequences clean — **PASS 2026-07-23** (live gate: single-node active-kill failover 29s + full-outage ~59s both-down drain; every 5s bucket = exactly 3 through both outages, 216 total == 216 distinct; 0 auth failures / 0 seq regressions; whole control plane — heartbeat/health/notification/audit — on gRPC `CentralControlService`)
-- [x] P3 Central `SiteTransport=Grpc` all sites; full UI command matrix per site; site-kill mid-command clean; no PSK noise; zero ClusterClient log activity on flipped paths — **PASS 2026-07-23** (live gate: `ExecuteQuery`/`ExecuteParked` all 3 sites + `ExecuteLifecycle` disable/enable on site-a, all 200 over `SiteCommandService`; active-site-node hard-kill mid-command → clean `TIMEOUT` at the 30s deadline, next call failed over to site-a-b automatically; 0 PermissionDenied / 0 ClusterClient-to-site on both central. `ExecuteOpcUa`/`ExecuteRoute`/`TriggerFailover` deferred — no OPC-bound instance / no CLI verb, unit-proven)
+- [x] P3 Central `SiteTransport=Grpc` all sites; full UI command matrix per site; site-kill mid-command clean; no PSK noise; zero ClusterClient log activity on flipped paths — **PASS 2026-07-23** (live gate: `ExecuteQuery`/`ExecuteParked` all 3 sites + `ExecuteLifecycle` disable/enable on site-a, all 200 over `SiteCommandService`; active-site-node hard-kill mid-command → clean `TIMEOUT` at the 30s deadline, next call failed over to site-a-b automatically; 0 PermissionDenied / 0 ClusterClient-to-site on both central. `ExecuteOpcUa`/`ExecuteRoute`/`TriggerFailover` deferred — no OPC-bound instance / no CLI verb, unit-proven) **Update 2026-08-07 (truth sweep): no longer deferred — `ExecuteOpcUa`/`ExecuteRoute`/parked-retry/`TriggerSiteFailover` were ALL LIVE-PROVEN 2026-08-01 (`1c99d6fa`); see the Phase-5 closure note below.**
 
 **Phase 4 — deletion**
 - [x] gRPC made the only transport (flags DELETED, not flipped — end state is identical) + deleted `AkkaCentralTransport`/`AkkaSiteTransport`, ClusterClient creation (`AkkaHostedService`), `DefaultSiteClientFactory`+`ISiteClientFactory`, both receptionist registrations (`:436`/`:1001`), `CentralContactPoints` + the `CentralTransport`/`SiteTransport` flags + `CentralTransportMode`/`SiteTransportKind` enums. `NoOpCentralTransport` added as the fail-loud null-default; `CentralGrpcEndpoints` now unconditional (StartupValidator requires ≥1 on Site). Kept `Akka.Cluster.Tools` (ClusterSingleton). Rig configs (docker ×6, docker-env2 ×2, Host default, wonder-app-vd03) moved `CentralContactPoints`→`CentralGrpcEndpoints`. **Full solution build 0/0; Communication.Tests 640, Host.Tests + StartupValidator + SiteActorPath green, audit-push integration green** (2026-07-23)
-- [x] Grep-gates pass (`CentralContactPoints` → only "replaces the former" doc refs + plan trackers; deleted symbols → 0 live refs; remaining `clusterclient` in src = the misleadingly-named `ClusterClientSiteAuditClient` [transport-agnostic, works unchanged] + stale inline doc-comments, noted as follow-up)
+- [x] Grep-gates pass (`CentralContactPoints` → only "replaces the former" doc refs + plan trackers; deleted symbols → 0 live refs; remaining `clusterclient` in src = the misleadingly-named `ClusterClientSiteAuditClient` [transport-agnostic, works unchanged] + stale inline doc-comments, noted as follow-up) **Update 2026-08-07 (truth sweep): follow-up DONE — commit `63c16d69` (2026-07-27, "retire ClusterClient naming after the gRPC cutover") renamed it to `SiteCommunicationAuditClient` and rewrote the stale inline comments; grep confirms 0 `ClusterClientSiteAuditClient` references remain in `src/`/`tests/`.**
 - [x] Docs updated: `Component-Communication.md`, `components/Communication.md`, `Component-Host.md`, `Component-StoreAndForward.md`, `topology-guide.md`, `grpc_streams.md`, known-issues frame-size amendment, **CLAUDE.md** transport decisions
 
 **Phase 5 — live gate** (record in `2026-07-22-clusterclient-to-grpc-live-gate.md`) — **PASS 2026-07-23** (deletion build, `main` @ `7fd5cb2b`)