docs(src): add missing XML docs and strip tracking-ID comments

Sweep of 203 source files resolving CommentChecker findings: add
<summary>/<param>/<returns>/<inheritdoc> where missing, and remove
resolved task/issue tracking markers (Tests-NNN, Worker-NNN, Server-NNN,
Task N) from code comments. Comment/doc-only — no logic changes.
Server+Tests build clean under TreatWarningsAsErrors.

src/ZB.MOM.WW.MxGateway.Worker/Ipc/IWorkerPipeClient.cs

@@ -10,6 +10,7 @@ public interface IWorkerPipeClient
     /// <summary>Connects to the gateway and runs the worker until the session ends or is cancelled.</summary>
     /// <param name="options">Configuration options.</param>
     /// <param name="cancellationToken">Token to cancel the asynchronous operation.</param>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     Task RunAsync(
         WorkerOptions options,
         CancellationToken cancellationToken = default);