knowledge: improve review precision from BCApps PR 11063 feedback

microsoft/knowledge/performance/keep-sync-watermark-fixed-for-late-arriving-items.good.al

@@ -0,0 +1,26 @@
+codeunit 50250 "Perf Sample SyncWatermark Good"
+{
+    procedure RetrieveMonitoredFolderEmails(var MonitorSetup: Record "Email Monitor Setup")
+    var
+        TempFilters: Record "Email Retrieve Filters" temporary;
+        RetrievedCount: Integer;
+    begin
+        // Earliest Email stays pinned to the configured Start Date: emails moved
+        // into the monitored folder keep their original receivedDateTime, so a
+        // fixed lower bound is required to still see them after being moved in.
+        TempFilters."Earliest Email" := MonitorSetup."Start Date";
+        TempFilters."Exclude Processed Category" := true;
+
+        RetrievedCount := CallGraphRetrieve(TempFilters);
+
+        // Last Sync At records that a successful run happened, for diagnostics
+        // only. It is never fed back into the retrieval filter.
+        MonitorSetup."Last Sync At" := CurrentDateTime;
+        MonitorSetup.Modify();
+    end;
+
+    local procedure CallGraphRetrieve(var TempFilters: Record "Email Retrieve Filters" temporary): Integer
+    begin
+        exit(0);
+    end;
+}