Implement LmxOpcUa server — all 6 phases complete

Full OPC UA server on .NET Framework 4.8 (x86) exposing AVEVA System
Platform Galaxy tags via MXAccess. Mirrors Galaxy object hierarchy as
OPC UA address space, translating contained-name browse paths to
tag-name runtime references.

Components implemented:
- Configuration: AppConfiguration with 4 sections, validator
- Domain: ConnectionState, Quality, Vtq, MxDataTypeMapper, error codes
- MxAccess: StaComThread, MxAccessClient (partial classes), MxProxyAdapter
  using strongly-typed ArchestrA.MxAccess COM interop
- Galaxy Repository: SQL queries (hierarchy, attributes, change detection),
  ChangeDetectionService with auto-rebuild on deploy
- OPC UA Server: LmxNodeManager (CustomNodeManager2), LmxOpcUaServer,
  OpcUaServerHost with programmatic config, SecurityPolicy None
- Status Dashboard: HTTP server with HTML/JSON/health endpoints
- Integration: Full 14-step startup, graceful shutdown, component wiring

175 tests (174 unit + 1 integration), all passing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tests/ZB.MOM.WW.LmxOpcUa.Tests/Wiring/OpcUaReadToMxAccessWiringTest.cs

@@ -0,0 +1,44 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Shouldly;
+using Xunit;
+using ZB.MOM.WW.LmxOpcUa.Host.Domain;
+using ZB.MOM.WW.LmxOpcUa.Host.OpcUa;
+using ZB.MOM.WW.LmxOpcUa.Tests.Helpers;
+
+namespace ZB.MOM.WW.LmxOpcUa.Tests.Wiring
+{
+    /// <summary>
+    /// Verifies: OPC UA Read → NodeManager → IMxAccessClient.ReadAsync with correct full_tag_reference
+    /// </summary>
+    public class OpcUaReadToMxAccessWiringTest
+    {
+        [Fact]
+        public async Task Read_ResolvesCorrectTagReference()
+        {
+            var mxClient = new FakeMxAccessClient();
+            mxClient.TagValues["DelmiaReceiver_001.DownloadPath"] = Vtq.Good("/some/path");
+
+            var hierarchy = new List<GalaxyObjectInfo>
+            {
+                new GalaxyObjectInfo { GobjectId = 1, TagName = "TestMachine_001", BrowseName = "TestMachine_001", ParentGobjectId = 0, IsArea = false },
+                new GalaxyObjectInfo { GobjectId = 2, TagName = "DelmiaReceiver_001", ContainedName = "DelmiaReceiver", BrowseName = "DelmiaReceiver", ParentGobjectId = 1, IsArea = false }
+            };
+            var attributes = new List<GalaxyAttributeInfo>
+            {
+                new GalaxyAttributeInfo { GobjectId = 2, TagName = "DelmiaReceiver_001", AttributeName = "DownloadPath", FullTagReference = "DelmiaReceiver_001.DownloadPath", MxDataType = 5, IsArray = false }
+            };
+
+            var model = AddressSpaceBuilder.Build(hierarchy, attributes);
+
+            // The model should contain the correct tag reference
+            model.NodeIdToTagReference.ContainsKey("DelmiaReceiver_001.DownloadPath").ShouldBe(true);
+            model.NodeIdToTagReference["DelmiaReceiver_001.DownloadPath"].ShouldBe("DelmiaReceiver_001.DownloadPath");
+
+            // The MxAccessClient should be able to read using the tag reference
+            var vtq = await mxClient.ReadAsync("DelmiaReceiver_001.DownloadPath");
+            vtq.Value.ShouldBe("/some/path");
+            vtq.Quality.ShouldBe(Quality.Good);
+        }
+    }
+}