docs(xmldoc): fill missing XML docs + strip tracking-ID comments across src

Adds <summary>/<param>/<returns>/<inheritdoc> where missing and removes
project bookkeeping IDs (task/tracking refs) from shipped code comments,
so the docs read cleanly and CommentChecker is quiet except for known
false positives (PLC/protocol terms, event/IEqualityComparer inheritdoc).
Doc/comment-only; no logic changed; solution builds clean.

src/Core/ZB.MOM.WW.OtOpcUa.Core.ScriptedAlarms/ScriptedAlarmSource.cs

@@ -124,7 +124,7 @@ public sealed class ScriptedAlarmSource : IAlarmSource, IDisposable
         /// <summary>Initializes a new instance of the <see cref="SubscriptionHandle"/> class.</summary>
         /// <param name="id">The diagnostic ID for this subscription handle.</param>
         public SubscriptionHandle(string id) { DiagnosticId = id; }
-        /// <summary>Gets the diagnostic ID that uniquely identifies this subscription.</summary>
+        /// <inheritdoc />
         public string DiagnosticId { get; }
     }