Phase 6.3 exit gate — compliance real-checks + phase doc = SHIPPED (core)

scripts/compliance/phase-6-3-compliance.ps1 turns stub TODOs into 21 real
checks covering:
- Stream B 8-state matrix: ServiceLevelCalculator + ServiceLevelBand present;
  Maintenance=0, NoData=1, InvalidTopology=2, AuthoritativePrimary=255,
  IsolatedPrimary=230, PrimaryMidApply=200, RecoveringPrimary=180,
  AuthoritativeBackup=100, IsolatedBackup=80, BackupMidApply=50,
  RecoveringBackup=30 — every numeric band pattern-matched in source (any
  drift turns a check red).
- Stream B RecoveryStateManager with dwell + publish-witness gate + 60s
  default dwell.
- Stream D ApplyLeaseRegistry: BeginApplyLease returns IAsyncDisposable;
  key includes PublishRequestId (decision #162); PruneStale watchdog present;
  10 min default ApplyMaxDuration.

Five [DEFERRED] follow-up surfaces explicitly listed with task IDs:
  - Stream A topology loader (task #145)
  - Stream C OPC UA node wiring (task #147)
  - Stream E Admin UI (task #149)
  - Stream F interop + Galaxy failover (task #150)
  - sp_PublishGeneration Transparent-mode rejection (task #148 part 2)

Cross-cutting: full solution dotnet test passes 1137 >= 1097 pre-Phase-6.3
baseline; pre-existing Client.CLI Subscribe flake tolerated.

docs/v2/implementation/phase-6-3-redundancy-runtime.md status updated from
DRAFT to SHIPPED (core). Non-transparent redundancy per decision #84 keeps
role election out of scope — operator-driven failover is the v2.0 model.

`Phase 6.3 compliance: PASS` — exit 0.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docs/v2/implementation/phase-6-3-redundancy-runtime.md

@@ -1,6 +1,15 @@
 # Phase 6.3 — Redundancy Runtime
 
-> **Status**: DRAFT — `CLAUDE.md` + `docs/Redundancy.md` describe a non-transparent warm/hot redundancy model with unique ApplicationUris, `RedundancySupport` advertisement, `ServerUriArray`, and dynamic `ServiceLevel`. Entities (`ServerCluster`, `ClusterNode`, `RedundancyRole`, `RedundancyMode`) exist; the runtime behavior (actual `ServiceLevel` number computation, mid-apply dip, `ServerUriArray` broadcast) is not wired.
+> **Status**: **SHIPPED (core)** 2026-04-19 — Streams B (ServiceLevelCalculator + RecoveryStateManager) and D core (ApplyLeaseRegistry) merged to `v2` in PR #89. Exit gate in PR #90.
+>
+> Deferred follow-ups (tracked separately):
+> - Stream A — RedundancyCoordinator cluster-topology loader (task #145).
+> - Stream C — OPC UA node wiring: ServiceLevel + ServerUriArray + RedundancySupport (task #147).
+> - Stream E — Admin UI RedundancyTab + OpenTelemetry metrics + SignalR (task #149).
+> - Stream F — client interop matrix + Galaxy MXAccess failover test (task #150).
+> - sp_PublishGeneration pre-publish validator rejecting unsupported RedundancyMode values (task #148 part 2 — SQL-side).
+>
+> Baseline pre-Phase-6.3: 1097 solution tests → post-Phase-6.3 core: 1137 passing (+40 net).
 >
 > **Branch**: `v2/phase-6-3-redundancy-runtime`
 > **Estimated duration**: 2 weeks