docs(src): fix CommentChecker findings across src/ — 1,032 → 5 (all false positives)

Comment/XML-doc changes only, no code logic:
- strip project-tracking references (WP*, P*-*, row-NN, #NN, Task N) from
  comments, keeping the explanatory rationale
- add missing summaries, <param>, <returns>, <typeparam> and <inheritdoc/>
- replace misused <inheritdoc/> with real docs; where <inheritdoc/> was
  combined with useful remarks, move the rationale into // comments
- drop stale replicationActor <param> on DeploymentManagerActor ctor

Remaining 5 are false positives (CWE-1236 x2, failures-1, year-0001, M365).
Build 0 errors / 0 warnings.

src/ZB.MOM.WW.ScadaBridge.Communication/Grpc/SiteCommandDtoMapper.cs

@@ -56,7 +56,7 @@ namespace ZB.MOM.WW.ScadaBridge.Communication.Grpc;
 ///     Nullable <b>collections</b> are wrapped in a per-collection message, so
 ///     the null/empty distinction becomes a message-presence question. proto3
 ///     <c>repeated</c>/<c>map</c> alone collapses the two — precisely the silent
-///     data-loss class the transport round-trip guard caught in PLAN-05 T8.
+///     data-loss class the transport round-trip guard caught in the transport round-trip tests.
 ///   </item>
 ///   <item>
 ///     <c>Guid?</c> members ride as a <c>string</c> holding the "D" form, with