fix: harden utility export recovery

controller/service.py

@@ -148,12 +148,6 @@ class ControllerService:
                         self.store,
                         on_event=self._queue_download_event,
                     )
-                try:
-                    self.downloads.reconcile_export_artifacts()
-                except BaseException:
-                    LOG.exception(
-                        "utility export reconciliation failed; Controller startup continues"
-                    )
                 # Cleanup is deliberately deferred until fresh Player evidence
                 # (or an explicit administrative reconciliation) makes it safe.
                 self._reset_cleanup_evidence()
@@ -171,6 +165,11 @@ class ControllerService:
                 self._coordinator.start()
                 self.mqtt.start()
                 self._started = True
+                # A crash-published playlist may contain many files to probe.
+                # Queue that bounded work only after core readiness and keep it
+                # on the dedicated export executor, so MQTT reconnect and
+                # Player coordination never wait for recovery to finish.
+                self.downloads.schedule_export_reconciliation()
             except BaseException:
                 self._stop_event.set()
                 try: