Fix audit findings for coverage, architecture checks, and XML docs

tests/CBDD.Tests.Benchmark/Logging.cs

@@ -7,8 +7,16 @@ internal static class Logging
 {
     private static readonly Lazy<ILoggerFactory> LoggerFactoryInstance = new(CreateFactory);
 
+    /// <summary>
+    /// Gets the shared logger factory for benchmarks.
+    /// </summary>
     public static ILoggerFactory LoggerFactory => LoggerFactoryInstance.Value;
 
+    /// <summary>
+    /// Creates a logger for the specified category type.
+    /// </summary>
+    /// <typeparam name="T">The logger category type.</typeparam>
+    /// <returns>A logger for <typeparamref name="T"/>.</returns>
     public static Microsoft.Extensions.Logging.ILogger CreateLogger<T>()
     {
         return LoggerFactory.CreateLogger<T>();