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>

gr/connectioninfo.md

@@ -0,0 +1,26 @@
+# Galaxy Repository — Connection Information
+
+## Database Connection
+
+| Parameter       | Value          |
+|-----------------|----------------|
+| Server          | localhost (default instance) |
+| Database Name   | ZB             |
+| Port            | 1433 (default) |
+| Authentication  | Windows Auth   |
+| Username        | dohertj2       |
+
+## sqlcmd Usage
+
+```
+sqlcmd -S localhost -d ZB -E -Q "YOUR QUERY HERE"
+```
+
+- `-S localhost` — default instance
+- `-d ZB` — database name
+- `-E` — Windows Authentication (dohertj2)
+
+## Notes
+
+- The Galaxy Repository is a SQL Server database created and managed by AVEVA System Platform (formerly Wonderware).
+- Typically accessed via SQL Server Management Studio (SSMS), `sqlcmd`, or programmatically via ODBC/ADO.NET/pyodbc.