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.Configuration/Entities/ServerCluster.cs

@@ -14,7 +14,7 @@ public sealed class ServerCluster
     /// <summary>Gets or sets the display name for the server cluster.</summary>
     public required string Name { get; set; }
 
-    /// <summary>UNS level 1. Canonical org value: "zb" per decision #140.</summary>
+    /// <summary>UNS level 1. Canonical org value: "zb".</summary>
     public required string Enterprise { get; set; }
 
     /// <summary>UNS level 2, e.g. "warsaw-west".</summary>