feat: Implement single sync job management and progress tracking

backend/tests/unit/test_rate_limiter.py

@@ -18,6 +18,7 @@ async def test_rate_limiter_allows_requests_within_limit():
     except HTTPException:
         pytest.fail("HTTPException raised unexpectedly.")
 
+
 @pytest.mark.asyncio
 async def test_rate_limiter_raises_exception_when_exceeded():
     """Test that the rate limiter raises an HTTPException when the rate limit is exceeded."""
@@ -25,15 +26,20 @@ async def test_rate_limiter_raises_exception_when_exceeded():
     mock_request = MagicMock()
 
     # Mock the limiter.test method
-    with patch.object(rate_limiter.limiter, 'test') as mock_limiter_test:
-        mock_limiter_test.side_effect = [True, False] # First call returns True, second returns False
+    with patch.object(rate_limiter.limiter, "test") as mock_limiter_test:
+        mock_limiter_test.side_effect = [
+            True,
+            False,
+        ]  # First call returns True, second returns False
 
-        await rate_limiter(mock_request) # First call, should pass
+        await rate_limiter(mock_request)  # First call, should pass
 
         with pytest.raises(HTTPException) as exc_info:
-            await rate_limiter(mock_request) # Second call, should fail
+            await rate_limiter(mock_request)  # Second call, should fail
 
         assert exc_info.value.status_code == 429
-        mock_limiter_test.assert_called_with(rate_limiter.rate_limit_item, "single_user_system")
+        mock_limiter_test.assert_called_with(
+            rate_limiter.rate_limit_item, "single_user_system"
+        )
 
     assert exc_info.value.status_code == 429