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.CentralUI/Components/Pages/Design/ExternalSystemForm.razor

@@ -12,7 +12,7 @@
 
     <div class="d-flex justify-content-between align-items-center mb-3">
         <h4 class="mb-0">@(Id.HasValue ? "Edit External System" : "Add External System")</h4>
-        @* Bundle D (#23 M7-T12) drill-in: deep-link into the central Audit Log
+        @* Drill-in: deep-link into the central Audit Log
            pre-filtered to this external system's outbound API events. Audit rows
            record the target by external-system name, so we filter on Target. *@
         @if (Id.HasValue && !string.IsNullOrWhiteSpace(_name))