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>

src/ZB.MOM.WW.LmxOpcUa.Host/ZB.MOM.WW.LmxOpcUa.Host.csproj

@@ -0,0 +1,54 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net48</TargetFramework>
+    <PlatformTarget>x86</PlatformTarget>
+    <LangVersion>9.0</LangVersion>
+    <Nullable>enable</Nullable>
+    <RootNamespace>ZB.MOM.WW.LmxOpcUa.Host</RootNamespace>
+    <AssemblyName>ZB.MOM.WW.LmxOpcUa.Host</AssemblyName>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <InternalsVisibleTo Include="ZB.MOM.WW.LmxOpcUa.Tests" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <!-- Service hosting -->
+    <PackageReference Include="Topshelf" Version="4.3.0" />
+    <PackageReference Include="Topshelf.Serilog" Version="4.3.0" />
+
+    <!-- Logging -->
+    <PackageReference Include="Serilog" Version="2.10.0" />
+    <PackageReference Include="Serilog.Sinks.Console" Version="4.1.0" />
+    <PackageReference Include="Serilog.Sinks.File" Version="5.0.0" />
+
+    <!-- OPC UA -->
+    <PackageReference Include="OPCFoundation.NetStandard.Opc.Ua.Server" Version="1.5.374.126" />
+
+    <!-- Configuration -->
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="6.0.1" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="6.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="6.0.1" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="6.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <!-- MXAccess COM interop -->
+    <Reference Include="ArchestrA.MxAccess">
+      <HintPath>..\..\lib\ArchestrA.MxAccess.dll</HintPath>
+      <EmbedInteropTypes>false</EmbedInteropTypes>
+    </Reference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Update="appsettings.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="appsettings.*.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>