Add XML documentation across gateway, worker, and .NET client

src/MxGateway.IntegrationTests/Galaxy/LiveGalaxyRepositoryFactAttribute.cs

@@ -1,10 +1,14 @@
 namespace MxGateway.IntegrationTests.Galaxy;
 
+/// <summary>Fact attribute that skips tests unless live Galaxy Repository tests are explicitly enabled.</summary>
 public sealed class LiveGalaxyRepositoryFactAttribute : FactAttribute
 {
+    /// <summary>Environment variable name to enable live Galaxy Repository tests.</summary>
     public const string EnableVariableName = "MXGATEWAY_RUN_LIVE_GALAXY_TESTS";
+    /// <summary>Environment variable name for the Galaxy Repository connection string.</summary>
     public const string ConnectionStringVariableName = "MXGATEWAY_LIVE_GALAXY_CONN";
 
+    /// <summary>Initializes a new instance of the LiveGalaxyRepositoryFactAttribute class.</summary>
     public LiveGalaxyRepositoryFactAttribute()
     {
         if (!Enabled)
@@ -13,12 +17,14 @@ public sealed class LiveGalaxyRepositoryFactAttribute : FactAttribute
         }
     }
 
+    /// <summary>Gets a value indicating whether live Galaxy Repository tests are enabled.</summary>
     public static bool Enabled =>
         string.Equals(
             Environment.GetEnvironmentVariable(EnableVariableName),
             "1",
             StringComparison.Ordinal);
 
+    /// <summary>Gets the Galaxy Repository connection string from environment or default.</summary>
     public static string ConnectionString =>
         Environment.GetEnvironmentVariable(ConnectionStringVariableName)
             ?? "Server=localhost;Database=ZB;Integrated Security=True;TrustServerCertificate=True;Encrypt=False;";