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.AuditLog/Central/AuditLogPurgeOptions.cs

@@ -4,7 +4,7 @@ namespace ZB.MOM.WW.ScadaBridge.AuditLog.Central;
 
 /// <summary>
 /// Tuning knobs for the central <see cref="AuditLogPurgeActor"/> singleton.
-/// Default cadence is 24 hours per the M6 plan; the retention window itself
+/// Default cadence is 24 hours; the retention window itself
 /// is sourced from <see cref="ZB.MOM.WW.ScadaBridge.AuditLog.Configuration.AuditLogOptions.RetentionDays"/>
 /// (default 365) so operators tune retention from a single section.
 /// </summary>
@@ -31,7 +31,7 @@ public sealed class AuditLogPurgeOptions
     public int IntervalHours { get; set; } = 24;
 
     /// <summary>
-    /// M5.5 (T3): batch size for the per-channel retention-override row DELETE
+    /// Batch size for the per-channel retention-override row DELETE
     /// (<see cref="ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Repositories.IAuditLogRepository.PurgeChannelOlderThanAsync"/>).
     /// Each <c>DELETE TOP (@batch)</c> caps the transaction-log and lock footprint
     /// per statement; the repository loops batches until no rows remain. Default
@@ -40,7 +40,7 @@ public sealed class AuditLogPurgeOptions
     /// <see cref="ChannelPurgeBatchSize"/>.
     /// </summary>
     /// <remarks>
-    /// AuditLog-013: the operator-facing config key is <c>ChannelPurgeBatchSize</c>
+    /// The operator-facing config key is <c>ChannelPurgeBatchSize</c>
     /// (per Component-AuditLog.md), so the binder maps that documented key onto this
     /// backing property via <see cref="ConfigurationKeyNameAttribute"/>. The unattributed
     /// property name (<c>ChannelPurgeBatchSizeConfigured</c>) would otherwise have been