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.Commons/Interfaces/Repositories/IKpiHistoryRepository.cs

@@ -4,7 +4,7 @@ using ZB.MOM.WW.ScadaBridge.Commons.Types.Kpi;
 namespace ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Repositories;
 
 /// <summary>
-/// Data access for the central KPI-history backbone (M6 "KPI History &amp; Trends")
+/// Data access for the central KPI-history backbone ("KPI History &amp; Trends")
 /// — the tall / EAV <c>KpiSample</c> table in central MS SQL. Backs the recorder
 /// singleton's bulk write, the bucketed query path that feeds the reusable trend
 /// chart, and the retention purge. Implementation lives in the Configuration