Phase 6.1 Stream A.3 complete — wire CapabilityInvoker into DriverNodeManager dispatch end-to-end

Every OnReadValue / OnWriteValue now routes through the process-singleton
DriverResiliencePipelineBuilder's CapabilityInvoker. Read / Write dispatch
paths gain timeout + per-capability retry + per-(driver, host) circuit breaker
+ bulkhead without touching the individual driver implementations.

Wiring:
- OpcUaApplicationHost: new optional DriverResiliencePipelineBuilder ctor
  parameter (default null → instance-owned builder). Keeps the 3 test call
  sites that construct OpcUaApplicationHost directly unchanged.
- OtOpcUaServer: requires the builder in its ctor; constructs one
  CapabilityInvoker per driver at CreateMasterNodeManager time with default
  Tier A DriverResilienceOptions. TODO: Stream B.1 will wire real per-driver-
  type tiers via DriverTypeRegistry; Phase 6.1 follow-up will read the
  DriverInstance.ResilienceConfig JSON column for per-instance overrides.
- DriverNodeManager: takes a CapabilityInvoker in its ctor. OnReadValue wraps
  the driver's ReadAsync through ExecuteAsync(DriverCapability.Read, hostName,
  ...); OnWriteValue wraps WriteAsync through ExecuteWriteAsync(hostName,
  isIdempotent, ...) where isIdempotent comes from the new
  _writeIdempotentByFullRef map populated at Variable() registration from
  DriverAttributeInfo.WriteIdempotent.

HostName defaults to driver.DriverInstanceId for now — a single-host pipeline
per driver. Multi-host drivers (Modbus with N PLCs) will expose their own per-
call host resolution in a follow-up so failing PLCs can trip per-PLC breakers
without poisoning siblings (decision #144).

Test fixup:
- FlakeyDriverIntegrationTests.Read_SurfacesSuccess_AfterTransientFailures:
  bumped TimeoutSeconds=2 → 30. 10 retries at exponential backoff with jitter
  can exceed 2s under parallel-test-run CPU pressure; the test asserts retry
  behavior, not timeout budget, so the longer slack keeps it deterministic.

Full solution dotnet test: 948 passing. Pre-existing Client.CLI Subscribe
flake unchanged.

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

tests/ZB.MOM.WW.OtOpcUa.Core.Tests/Resilience/FlakeyDriverIntegrationTests.cs

@@ -23,7 +23,10 @@ public sealed class FlakeyDriverIntegrationTests
             Tier = DriverTier.A,
             CapabilityPolicies = new Dictionary<DriverCapability, CapabilityPolicy>
             {
-                [DriverCapability.Read] = new(TimeoutSeconds: 2, RetryCount: 10, BreakerFailureThreshold: 50),
+                // TimeoutSeconds=30 gives slack for 5 exponential-backoff retries under
+                // parallel-test-execution CPU pressure; 10 retries at the default Delay=100ms
+                // exponential can otherwise exceed a 2-second budget intermittently.
+                [DriverCapability.Read] = new(TimeoutSeconds: 30, RetryCount: 10, BreakerFailureThreshold: 50),
             },
         };
         var invoker = new CapabilityInvoker(new DriverResiliencePipelineBuilder(), "drv-test", () => options);