feat: improve SQL query formatting and add type hints for better clarity

tests/unit/test_config_e2e.py

@@ -1,6 +1,5 @@
 """End-to-end test for configuration management system."""
 
-import pytest
 from unittest.mock import Mock, patch
 
 from arbitrade.config.service import ConfigurationService

tests/unit/test_config_repositories.py

@@ -1,19 +1,19 @@
 """Unit tests for configuration repositories."""
 
-import pytest
 from unittest.mock import Mock, patch
 
-from arbitrade.storage.repositories import (
-    ConfigSettingRepository,
-    ConfigPairingRepository,
-    ConfigBacktestingDefaultsRepository,
-)
+import pytest
+
 from arbitrade.config.service import (
-    ConfigSetting,
     ConfigPairing,
-    ConfigBacktestingDefaults,
+    ConfigSetting,
 )
 from arbitrade.storage.db import DuckDBStore
+from arbitrade.storage.repositories import (
+    ConfigBacktestingDefaultsRepository,
+    ConfigPairingRepository,
+    ConfigSettingRepository,
+)
 
 
 @pytest.fixture
@@ -238,8 +238,7 @@ def test_config_pairing_repository_create_pairing(mock_store):
         ]
 
         # Create pairing
-        pairing = ConfigPairing(
-            base_asset="BTC", quote_asset="USD", enabled=True, source="Kraken")
+        pairing = ConfigPairing(base_asset="BTC", quote_asset="USD", enabled=True, source="Kraken")
 
         result = repo.create_pairing(pairing)
 

tests/unit/test_config_service.py

@@ -1,8 +1,9 @@
 """Unit tests for configuration management system."""
 
-import pytest
 from unittest.mock import Mock, patch
 
+import pytest
+
 from arbitrade.config.service import ConfigurationService
 from arbitrade.config.settings import Settings
 from arbitrade.storage.db import DuckDBStore