refactor to use pydantic settings and WAL sqlite mode

src/tests/endpoints/test_task.py

@@ -1,8 +1,7 @@
-from unittest.mock import AsyncMock, patch
+from unittest.mock import patch
 from fastapi.testclient import TestClient
 
 
-
 def setup_client():
     from main import app
     from security import get_token_or_user_auth
@@ -10,6 +9,7 @@ def setup_client():
     app.dependency_overrides[get_token_or_user_auth] = mock_get_token_or_user_auth
     return TestClient(app), app
 
+
 @patch("endpoints.task.AsyncResult")
 def test_get_status_success(mock_async_result):
     client, app = setup_client()