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.Galaxy/GalaxyDriverProbe.cs

@@ -145,6 +145,10 @@ public sealed class GalaxyDriverProbe : IDriverProbe
     ///     <see cref="StatusCode.PermissionDenied"/>) counts as reachable because it proves a live
     ///     gateway gRPC server answered.
     /// </summary>
+    /// <param name="code">The gRPC status code returned by the ping RPC.</param>
+    /// <param name="host">The probed host, used to compose the failure message.</param>
+    /// <param name="port">The probed port, used to compose the failure message.</param>
+    /// <returns>Whether the gateway should be considered reachable, plus a human-readable message.</returns>
     internal static (bool ok, string message) ClassifyRpc(StatusCode code, string host, int port) => code switch
     {
         StatusCode.OK => (true, "gateway gRPC OK"),