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.NotificationService/SmtpTlsMode.cs

@@ -1,7 +1,7 @@
 namespace ZB.MOM.WW.ScadaBridge.NotificationService;
 
 /// <summary>
-/// NS-005: The three TLS modes the design doc defines for SMTP connections.
+/// The three TLS modes the design doc defines for SMTP connections.
 /// A single boolean cannot represent the requirement, so the configured
 /// <c>SmtpConfiguration.TlsMode</c> string is parsed into this three-state enum.
 /// </summary>
@@ -18,7 +18,7 @@ public enum SmtpTlsMode
 }
 
 /// <summary>
-/// NS-005: Parses the free-text <c>SmtpConfiguration.TlsMode</c> value into a
+/// Parses the free-text <c>SmtpConfiguration.TlsMode</c> value into a
 /// <see cref="SmtpTlsMode"/>, rejecting unknown values rather than silently
 /// falling back to opportunistic negotiation.
 /// </summary>