feat: voortgang copy/duplicate/move in headerbar

webui/backend/tests/unit/test_task_repository.py

@@ -107,6 +107,64 @@ class TaskRepositoryTest(unittest.TestCase):
         self.assertEqual(task["status"], "cancelled")
         self.assertIsNotNone(task["finished_at"])
 
+    def test_reconcile_incomplete_tasks_marks_non_terminal_failed(self) -> None:
+        self.repo.insert_task_for_testing(
+            {
+                "id": "task-running",
+                "operation": "copy",
+                "status": "running",
+                "source": "storage1/a",
+                "destination": "storage2/a",
+                "created_at": "2026-03-10T09:00:00Z",
+                "started_at": "2026-03-10T09:00:01Z",
+                "current_item": "storage1/a",
+            }
+        )
+        self.repo.insert_task_for_testing(
+            {
+                "id": "task-completed",
+                "operation": "copy",
+                "status": "completed",
+                "source": "storage1/b",
+                "destination": "storage2/b",
+                "created_at": "2026-03-10T09:05:00Z",
+                "finished_at": "2026-03-10T09:06:00Z",
+            }
+        )
+
+        changed = self.repo.reconcile_incomplete_tasks()
+
+        running = self.repo.get_task("task-running")
+        completed = self.repo.get_task("task-completed")
+        self.assertEqual(changed, ["task-running"])
+        self.assertEqual(running["status"], "failed")
+        self.assertEqual(running["error_code"], "task_interrupted")
+        self.assertEqual(running["error_message"], "Task was interrupted before completion")
+        self.assertIsNone(running["current_item"])
+        self.assertIsNotNone(running["finished_at"])
+        self.assertEqual(completed["status"], "completed")
+
+    def test_reconcile_incomplete_tasks_removes_stale_artifact(self) -> None:
+        created = self.repo.create_task(
+            operation="download",
+            source="storage1/docs",
+            destination="docs.zip",
+            status="preparing",
+        )
+        self.repo.upsert_artifact(
+            task_id=created["id"],
+            file_path="/tmp/docs.zip.partial",
+            file_name="docs.zip",
+            expires_at="2026-03-10T10:30:00Z",
+        )
+
+        changed = self.repo.reconcile_incomplete_tasks()
+
+        task = self.repo.get_task(created["id"])
+        self.assertEqual(changed, [created["id"]])
+        self.assertEqual(task["status"], "failed")
+        self.assertIsNone(self.repo.get_artifact(created["id"]))
+
     def test_migrates_legacy_tasks_schema_missing_source_destination(self) -> None:
         legacy_db_path = Path(self.temp_dir.name) / "legacy.db"
         conn = sqlite3.connect(legacy_db_path)