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.

src/Server/ZB.MOM.WW.OtOpcUa.Runtime/Historian/HistorianAdapterActor.cs

@@ -25,9 +25,14 @@ public sealed class HistorianAdapterActor : ReceiveActor
     private readonly IAlarmHistorianSink _sink;
     private readonly ILoggingAdapter _log = Context.GetLogger();
 
+    /// <summary>Creates the props for a HistorianAdapterActor instance.</summary>
+    /// <param name="sink">The alarm historian sink implementation, or null to use a null sink.</param>
+    /// <returns>Props configured for creating a HistorianAdapterActor.</returns>
     public static Props Props(IAlarmHistorianSink? sink = null) =>
         Akka.Actor.Props.Create(() => new HistorianAdapterActor(sink ?? NullAlarmHistorianSink.Instance));
 
+    /// <summary>Initializes a new instance of the HistorianAdapterActor class.</summary>
+    /// <param name="sink">The alarm historian sink to forward enqueued events to.</param>
     public HistorianAdapterActor(IAlarmHistorianSink sink)
     {
         _sink = sink;