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/MxAccess/MxAccessCommandExecutor.cs

@@ -84,11 +84,7 @@ public sealed class MxAccessCommandExecutor : IStaCommandExecutor
         this.pumpStep = pumpStep ?? (static () => { });
     }
 
-    /// <summary>
-    /// Executes an MXAccess command and returns the reply.
-    /// </summary>
-    /// <param name="command">STA command to execute.</param>
-    /// <returns>Command reply with result or error details.</returns>
+    /// <inheritdoc />
     public MxCommandReply Execute(StaCommand command)
     {
         if (command is null)