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/Drivers/ZB.MOM.WW.OtOpcUa.Driver.AbCip/AbCipTemplateCache.cs

@@ -23,6 +23,7 @@ public sealed class AbCipTemplateCache
     /// </summary>
     /// <param name="deviceHostAddress">The device host address and port.</param>
     /// <param name="templateInstanceId">The template instance ID.</param>
+    /// <returns>The cached UDT shape, or <c>null</c> if not yet read.</returns>
     public AbCipUdtShape? TryGet(string deviceHostAddress, uint templateInstanceId) =>
         _shapes.TryGetValue((deviceHostAddress, templateInstanceId), out var shape) ? shape : null;