style: apply ruff formatting

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/test_pipeline_persistence.py

@@ -82,9 +82,7 @@ async def db_manager(async_engine):
     manager._sync_engine = None
     manager._async_engine = async_engine
     manager._sync_session_factory = None
-    manager._async_session_factory = async_sessionmaker(
-        bind=async_engine, expire_on_commit=False
-    )
+    manager._async_session_factory = async_sessionmaker(bind=async_engine, expire_on_commit=False)
     return manager
 
 
@@ -265,9 +263,7 @@ class TestPipelinePersistence:
 
         # Use a broken db_manager that raises on get_async_session
         broken_db = MagicMock()
-        broken_db.get_async_session = MagicMock(
-            side_effect=Exception("DB connection failed")
-        )
+        broken_db.get_async_session = MagicMock(side_effect=Exception("DB connection failed"))
         pipeline._db_manager = broken_db
 
         fresh_signal = FreshWalletSignal(