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

2 files changed, 4 insertions, 5 deletions

diff --git a/services/order-executor/tests/test_executor.py b/services/order-executor/tests/test_executor.py
index 4836ffb..e64b6c0 100644
--- a/services/order-executor/tests/test_executor.py
+++ b/services/order-executor/tests/test_executor.py
@@ -1,4 +1,5 @@
 """Tests for OrderExecutor."""
+
 from decimal import Decimal
 from unittest.mock import AsyncMock, MagicMock
 
diff --git a/services/order-executor/tests/test_risk_manager.py b/services/order-executor/tests/test_risk_manager.py
index f6b5545..a122d16 100644
--- a/services/order-executor/tests/test_risk_manager.py
+++ b/services/order-executor/tests/test_risk_manager.py
@@ -1,9 +1,9 @@
 """Tests for RiskManager."""
+
 from decimal import Decimal
 
-import pytest
 
-from shared.models import OrderSide, Position, Signal
+from shared.models import OrderSide, Signal
 from order_executor.risk_manager import RiskManager
 
 
@@ -55,9 +55,7 @@ def test_risk_check_rejects_daily_loss_exceeded():
     """Daily PnL of -1100 on 10000 balance = -11%, exceeding -10% limit."""
     rm = make_risk_manager(daily_loss_limit_pct="10.0")
     signal = make_signal(side=OrderSide.BUY, price="100", quantity="0.1")
-    result = rm.check(
-        signal, balance=Decimal("10000"), positions={}, daily_pnl=Decimal("-1100")
-    )
+    result = rm.check(signal, balance=Decimal("10000"), positions={}, daily_pnl=Decimal("-1100"))
     assert result.allowed is False
     assert result.reason == "Daily loss limit exceeded"