docs: backfill XML documentation across 756 files

Adds <summary>, <param>, <typeparam>, and <inheritdoc/> tags to public
members surfaced by commentchecker — resolves 5,847 of 5,869 issues
(99.6%) across three /fixdocs passes.

tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.AbLegacy.Tests/AbLegacyLoggerInjectionTests.cs

@@ -18,18 +18,27 @@ public sealed class AbLegacyLoggerInjectionTests
     private sealed class CapturingLogger : ILogger<AbLegacyDriver>
     {
         public readonly List<(LogLevel Level, string Message)> Entries = new();
+
+        /// <inheritdoc />
         public IDisposable BeginScope<TState>(TState state) where TState : notnull => NullScope.Instance;
+
+        /// <inheritdoc />
         public bool IsEnabled(LogLevel logLevel) => true;
+
+        /// <inheritdoc />
         public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception? exception,
             Func<TState, Exception?, string> formatter)
             => Entries.Add((logLevel, formatter(state, exception)));
         private sealed class NullScope : IDisposable
         {
             public static readonly NullScope Instance = new();
+
+            /// <inheritdoc />
             public void Dispose() { }
         }
     }
 
+    /// <summary>Verifies that the driver accepts an optional logger parameter.</summary>
     [Fact]
     public void Driver_accepts_optional_logger_parameter()
     {
@@ -40,6 +49,7 @@ public sealed class AbLegacyLoggerInjectionTests
         drv.ShouldNotBeNull();
     }
 
+    /// <summary>Verifies that driver initialization failure emits an error log.</summary>
     [Fact]
     public async Task InitializeAsync_failure_emits_error_log()
     {
@@ -57,6 +67,7 @@ public sealed class AbLegacyLoggerInjectionTests
         errors[0].Message.ShouldContain("drv-logged");
     }
 
+    /// <summary>Verifies that the first non-zero libplctag status per device is logged.</summary>
     [Fact]
     public async Task First_nonzero_libplctag_status_per_device_is_logged()
     {