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/Client/ZB.MOM.WW.OtOpcUa.Client.CLI/CommandBase.cs

@@ -67,11 +67,13 @@ public abstract class CommandBase : ICommand
     /// Executes the command-specific workflow against the configured OPC UA endpoint.
     /// </summary>
     /// <param name="console">The CLI console used for output and cancellation handling.</param>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     public abstract ValueTask ExecuteAsync(IConsole console);
 
     /// <summary>
     ///     Creates a <see cref="ConnectionSettings" /> from the common command options.
     /// </summary>
+    /// <returns>The connection settings built from the current command options.</returns>
     protected ConnectionSettings CreateConnectionSettings()
     {
         var securityMode = SecurityModeMapper.FromString(Security);
@@ -97,6 +99,7 @@ public abstract class CommandBase : ICommand
     ///     and returns both the service and the connection info.
     /// </summary>
     /// <param name="ct">The cancellation token that aborts connection setup for the command.</param>
+    /// <returns>The connected client service along with its connection info.</returns>
     protected async Task<(IOpcUaClientService Service, ConnectionInfo Info)> CreateServiceAndConnectAsync(
         CancellationToken ct)
     {