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/ScriptLogCompanionSinkTests.cs

@@ -18,7 +18,10 @@ public sealed class ScriptLogCompanionSinkTests
 {
     private sealed class CapturingSink : ILogEventSink
     {
+        /// <summary>Gets the list of captured log events.</summary>
         public List<LogEvent> Events { get; } = [];
+        /// <summary>Emits a log event by adding it to the events list.</summary>
+        /// <param name="logEvent">The log event to emit.</param>
         public void Emit(LogEvent logEvent) => Events.Add(logEvent);
     }
 
@@ -40,6 +43,7 @@ public sealed class ScriptLogCompanionSinkTests
         return (scriptLogger, scriptSink, mainSink);
     }
 
+    /// <summary>Tests that Info event lands in scripts sink but not in main.</summary>
     [Fact]
     public void Info_event_lands_in_scripts_sink_but_not_in_main()
     {
@@ -50,6 +54,7 @@ public sealed class ScriptLogCompanionSinkTests
         mainSink.Events.Count.ShouldBe(0);
     }
 
+    /// <summary>Tests that Warning event lands in scripts sink but not in main.</summary>
     [Fact]
     public void Warning_event_lands_in_scripts_sink_but_not_in_main()
     {
@@ -60,6 +65,7 @@ public sealed class ScriptLogCompanionSinkTests
         mainSink.Events.Count.ShouldBe(0);
     }
 
+    /// <summary>Tests that Error event is mirrored to main at Warning level.</summary>
     [Fact]
     public void Error_event_mirrored_to_main_at_Warning_level()
     {
@@ -72,6 +78,7 @@ public sealed class ScriptLogCompanionSinkTests
         mainSink.Events[0].Level.ShouldBe(LogEventLevel.Warning, "Error+ is downgraded to Warning in the main log");
     }
 
+    /// <summary>Tests that mirrored event includes ScriptName and original level.</summary>
     [Fact]
     public void Mirrored_event_includes_ScriptName_and_original_level()
     {
@@ -86,6 +93,7 @@ public sealed class ScriptLogCompanionSinkTests
         ((ScalarValue)forwarded.Properties["OriginalLevel"]).Value.ShouldBe(LogEventLevel.Error);
     }
 
+    /// <summary>Tests that mirrored event preserves exception for main log stack trace.</summary>
     [Fact]
     public void Mirrored_event_preserves_exception_for_main_log_stack_trace()
     {
@@ -97,6 +105,7 @@ public sealed class ScriptLogCompanionSinkTests
         mainSink.Events[0].Exception.ShouldBeSameAs(ex);
     }
 
+    /// <summary>Tests that Fatal event is mirrored just like Error.</summary>
     [Fact]
     public void Fatal_event_mirrored_just_like_Error()
     {
@@ -106,6 +115,7 @@ public sealed class ScriptLogCompanionSinkTests
         mainSink.Events[0].Level.ShouldBe(LogEventLevel.Warning);
     }
 
+    /// <summary>Tests that missing ScriptName property falls back to unknown.</summary>
     [Fact]
     public void Missing_ScriptName_property_falls_back_to_unknown()
     {
@@ -126,12 +136,14 @@ public sealed class ScriptLogCompanionSinkTests
         Should.NotThrow(() => companion.Emit(ev));
     }
 
+    /// <summary>Tests that null main logger is rejected.</summary>
     [Fact]
     public void Null_main_logger_rejected()
     {
         Should.Throw<ArgumentNullException>(() => new ScriptLogCompanionSink(null!));
     }
 
+    /// <summary>Tests that custom mirror threshold is applied.</summary>
     [Fact]
     public void Custom_mirror_threshold_applied()
     {
@@ -153,6 +165,7 @@ public sealed class ScriptLogCompanionSinkTests
         mainSink.Events.Count.ShouldBe(1);
     }
 
+    /// <summary>Tests that factory plus companion sink integration surfaces script error in both logs.</summary>
     [Fact]
     public void Factory_plus_companion_sink_integration_surfaces_script_error_in_both_logs()
     {