[autofix.ci] apply automated fixes

Author: autofix-ci[bot]

src/backend/base/langflow/api/utils/kb_windows_cleanup.py

@@ -110,7 +110,7 @@ def force_delete_kb(kb_path: Path, kb_name: str) -> bool:
     for attempt in range(_MAX_DELETE_RETRIES):
         try:
             if attempt > 0:
-                wait = _BASE_BACKOFF_SECONDS * (2 ** attempt)
+                wait = _BASE_BACKOFF_SECONDS * (2**attempt)
                 time.sleep(wait)
 
             _remove_sqlite_lock_files(kb_path)
@@ -127,7 +127,9 @@ def force_delete_kb(kb_path: Path, kb_name: str) -> bool:
             if attempt < _MAX_DELETE_RETRIES - 1:
                 logger.debug("Windows KB deletion attempt %d failed for %s: %s", attempt + 1, kb_name, e)
             else:
-                logger.warning("Windows KB deletion failed for %s after %d attempts: %s", kb_name, _MAX_DELETE_RETRIES, e)
+                logger.warning(
+                    "Windows KB deletion failed for %s after %d attempts: %s", kb_name, _MAX_DELETE_RETRIES, e
+                )
 
     # Last resort: rename for deferred cleanup
     if kb_path.exists():

src/backend/tests/unit/test_kb_windows_cleanup.py

@@ -8,11 +8,10 @@
 import shutil
 import uuid
 from pathlib import Path
-from unittest.mock import AsyncMock, MagicMock, patch
+from unittest.mock import MagicMock, patch
 
 import pytest
 
-
 # ---------------------------------------------------------------------------
 # Fixtures
 # ---------------------------------------------------------------------------
@@ -299,8 +298,6 @@ class TestDeleteEndpointPlatformBranching:
     async def test_delete_should_use_standard_path_on_macos(
         self, mock_root, mock_teardown, mock_platform, client, logged_in_headers, tmp_path
     ):
-        from httpx import AsyncClient
-
         mock_root.return_value = tmp_path
         (tmp_path / "activeuser" / "My_KB").mkdir(parents=True)