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.Tests/MxAccess/SyntheticAlarmGuidTests.cs

@@ -35,7 +35,7 @@ public sealed class SyntheticAlarmGuidTests
         Assert.NotEqual(Guid.Empty, SyntheticAlarmGuid.ForReference(string.Empty));
 
     /// <summary>
-    ///     Worker-027 regression: <see cref="SyntheticAlarmGuid.ForReference"/>
+    ///     Regression test: <see cref="SyntheticAlarmGuid.ForReference"/>
     ///     must derive its GUID without routing through
     ///     <see cref="System.Security.Cryptography"/>, because on net48
     ///     <c>MD5.Create()</c> throws under the Windows FIPS-compliance policy.