fix: harden utility export recovery

tests/test_exports.py

@@ -73,6 +73,7 @@ class FakeExportRunner:
                     "mp4": ".mp4",
                     "matroska": ".mkv",
                     "webm": ".webm",
+                    "mov": ".mov",
                 }[self.container]
             for index in range(1, self.playlist_items + 1):
                 (template.parent / f"{index:03d} - Tést Item {index} [id{index}]{extension}").write_bytes(
@@ -112,7 +113,7 @@ class FakeExportRunner:
                     ],
                     "format": {
                         "format_name": "mov,mp4,m4a,3gp,3g2,mj2"
-                        if converted or self.container == "mp4"
+                        if converted or self.container in {"mp4", "mov"}
                         else self.container
                     },
                 }
@@ -240,6 +241,35 @@ class UtilityExportTests(unittest.TestCase):
         self.assertEqual(arguments[arguments.index("-c:a") + 1], "copy")
         self.assertNotIn("libx264", arguments)
 
+    def test_quicktime_alias_is_remuxed_instead_of_renamed_to_mp4(self):
+        runner = FakeExportRunner(container="mov")
+        result = self.manager(runner).enqueue_export(
+            "https://www.youtube.com/watch?v=mov", "mp4", None, None
+        )
+
+        self.assertEqual(self.store.get_export_job(result.job_id).status, "completed")
+        arguments = runner.ffmpeg_calls[0]
+        self.assertEqual(arguments[arguments.index("-c:v") + 1], "copy")
+        self.assertEqual(arguments[arguments.index("-c:a") + 1], "copy")
+        self.assertNotIn("libx264", arguments)
+
+    def test_export_reconciliation_is_submitted_to_dedicated_executor(self):
+        export_executor = QueuedExecutor()
+        manager = DownloadManager(
+            self.config,
+            self.store,
+            runner=FakeExportRunner(),
+            executor=ImmediateExecutor(),
+            export_executor=export_executor,
+        )
+
+        self.assertTrue(manager.schedule_export_reconciliation())
+        self.assertEqual(len(export_executor.calls), 1)
+        _, function, arguments, keyword_arguments = export_executor.calls[0]
+        self.assertEqual(function, manager.reconcile_export_artifacts)
+        self.assertEqual(arguments, ())
+        self.assertEqual(keyword_arguments, {})
+
     def test_lower_resolution_mp4_is_preserved_without_scaling(self):
         runner = FakeExportRunner(height=720)
         result = self.manager(runner).enqueue_export(