fix: harden utility export recovery

tests/test_service.py

@@ -106,8 +106,9 @@ class FakeDownloadManager:
             max_active=20,
         )
 
-    def reconcile_export_artifacts(self):
+    def schedule_export_reconciliation(self):
         self.export_reconciled = True
+        return True
 
     def recover_pending_deletions(self):
         self.recovered = True