docs(comments): strip internal task/milestone/bundle bookkeeping from code comments

Remove project bookkeeping citations from shipped code comments across the
solution: hyphenated task IDs (WP-14, StoreAndForward-025), milestone/task/
issue refs (M3, Task 4, Audit Log #23, #21), Bundle X task-bundle labels,
and C/D/K/S/T phase labels.

Comment text only — no code logic, string/log literals, or XML-doc structure
changed. Genuine descriptions are preserved (only the citation is stripped),
and technical lookalikes are retained (UTF-8, SHA-256, T00:00:00, M365,
UTC-5, pre-C4/pre-C5 schema versions). Flagged by the new CommentChecker
TaskReferenceInComment / TrackingReferenceInComment checks plus targeted
grep passes; full solution builds clean, append-only guard tests pass.

src/ZB.MOM.WW.ScadaBridge.ExternalSystemGateway/ErrorClassifier.cs

@@ -3,7 +3,7 @@ using System.Net;
 namespace ZB.MOM.WW.ScadaBridge.ExternalSystemGateway;
 
 /// <summary>
-/// WP-8: Classifies HTTP errors as transient or permanent.
+/// Classifies HTTP errors as transient or permanent.
 /// Transient: connection refused, timeout, HTTP 408/429/5xx.
 /// Permanent: HTTP 4xx (except 408/429).
 /// </summary>