feat(notification-outbox): additive NotificationId query filter for ?correlationId= deep links

Claude-Session: https://claude.ai/code/session_01NcMG6xXdsJbmD2wYAgkK29

src/ZB.MOM.WW.ScadaBridge.Commons/Messages/Notification/NotificationOutboxQueries.cs

@@ -6,6 +6,11 @@ namespace ZB.MOM.WW.ScadaBridge.Commons.Messages.Notification;
 /// Outbox UI -> Central: paginated, filtered query over the notification outbox.
 /// All filter fields are optional; <see cref="StuckOnly"/> restricts results to stuck notifications.
 /// </summary>
+/// <param name="NotificationIdFilter">
+/// Exact match on a single notification — the <c>?correlationId=</c> deep link from the
+/// Flow Debugger / Audit Log. Additive; <c>null</c> means "no filter" (legacy senders
+/// compile unchanged).
+/// </param>
 public record NotificationOutboxQueryRequest(
     string CorrelationId,
     string? StatusFilter,
@@ -18,7 +23,8 @@ public record NotificationOutboxQueryRequest(
     DateTimeOffset? To,
     int PageNumber,
     int PageSize,
-    string? SourceNodeFilter = null);
+    string? SourceNodeFilter = null,
+    string? NotificationIdFilter = null);
 
 /// <summary>
 /// A single notification row summarised for outbox UI display.