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.Abstractions/DataValueSnapshot.cs

@@ -6,10 +6,6 @@ namespace ZB.MOM.WW.OtOpcUa.Core.Abstractions;
 ///     shape so the node-manager can pass through quality, source timestamp, and
 ///     server timestamp without translation.
 /// </summary>
-/// <remarks>
-///     Per <c>docs/v2/plan.md</c> decision #13 — every driver maps to the same
-///     OPC UA StatusCode space; this DTO is the universal carrier.
-/// </remarks>
 /// <param name="Value">The raw value; null when <see cref="StatusCode"/> indicates Bad.</param>
 /// <param name="StatusCode">OPC UA status code (numeric value matches the OPC UA spec).</param>
 /// <param name="SourceTimestampUtc">Driver-side timestamp when the value was sampled at the source. Null if unavailable.</param>