fix: resolve lint issues and final integration fixes

- Fix ambiguous variable name in binance_rest.py
- Remove unused volumes variable in volume_profile_strategy.py
- Fix import ordering in backtester main.py and test_metrics.py
- Auto-format all files with ruff

1 files changed, 1 insertions, 2 deletions

diff --git a/services/strategy-engine/strategies/volume_profile_strategy.py b/services/strategy-engine/strategies/volume_profile_strategy.py
index 684c33c..e9463bf 100644
--- a/services/strategy-engine/strategies/volume_profile_strategy.py
+++ b/services/strategy-engine/strategies/volume_profile_strategy.py
@@ -39,9 +39,8 @@ class VolumeProfileStrategy(BaseStrategy):
         if len(data) < self._lookback_period:
             return None
 
-        recent = data[-self._lookback_period:]
+        recent = data[-self._lookback_period :]
         prices = np.array([c[0] for c in recent])
-        volumes = np.array([c[1] for c in recent])
 
         min_price = prices.min()
         max_price = prices.max()