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/Core/ZB.MOM.WW.OtOpcUa.Core.Scripting.Tests/ScriptLoggerFactoryTests.cs

@@ -18,10 +18,15 @@ public sealed class ScriptLoggerFactoryTests
     /// <summary>Capturing sink that collects every emitted LogEvent for assertion.</summary>
     private sealed class CapturingSink : ILogEventSink
     {
+        /// <summary>Gets the list of captured log events.</summary>
         public List<LogEvent> Events { get; } = [];
+
+        /// <summary>Adds a log event to the captured list.</summary>
+        /// <param name="logEvent">The log event to capture.</param>
         public void Emit(LogEvent logEvent) => Events.Add(logEvent);
     }
 
+    /// <summary>Verifies that Create sets the ScriptName structured property.</summary>
     [Fact]
     public void Create_sets_ScriptName_structured_property()
     {
@@ -38,6 +43,7 @@ public sealed class ScriptLoggerFactoryTests
         ((ScalarValue)ev.Properties[ScriptLoggerFactory.ScriptNameProperty]).Value.ShouldBe("LineRate");
     }
 
+    /// <summary>Verifies that each script gets its own property value.</summary>
     [Fact]
     public void Each_script_gets_its_own_property_value()
     {
@@ -55,6 +61,7 @@ public sealed class ScriptLoggerFactoryTests
         ((ScalarValue)sink.Events[2].Properties[ScriptLoggerFactory.ScriptNameProperty]).Value.ShouldBe("Alarm_A");
     }
 
+    /// <summary>Verifies that error-level events preserve level and exception.</summary>
     [Fact]
     public void Error_level_event_preserves_level_and_exception()
     {
@@ -68,12 +75,14 @@ public sealed class ScriptLoggerFactoryTests
         sink.Events[0].Exception.ShouldBeOfType<InvalidOperationException>();
     }
 
+    /// <summary>Verifies that null root logger is rejected.</summary>
     [Fact]
     public void Null_root_rejected()
     {
         Should.Throw<ArgumentNullException>(() => new ScriptLoggerFactory(null!));
     }
 
+    /// <summary>Verifies that empty script names are rejected.</summary>
     [Fact]
     public void Empty_script_name_rejected()
     {
@@ -84,6 +93,7 @@ public sealed class ScriptLoggerFactoryTests
         Should.Throw<ArgumentException>(() => factory.Create(null!));
     }
 
+    /// <summary>Verifies that the ScriptNameProperty constant is stable.</summary>
     [Fact]
     public void ScriptNameProperty_constant_is_stable()
     {