phase 15: fix ruff lint errors across services

services/adapters/broker_service.py

@@ -36,19 +36,24 @@ from services.adapters.broker_adapter import (
     OrderType,
     TradingMode,
 )
+from services.lake_publisher.worker import (
+    LAKEHOUSE_BUCKET,
+    publish_positions_daily_batch,
+    publish_trade_fill,
+    publish_trade_order,
+)
+from services.risk.approval import (
+    ApprovalRequest,
+    compute_expiry,
+    create_approval_request,
+    requires_approval,
+)
 from services.risk.engine import (
     AccountRiskState,
     PortfolioRiskConfig,
     ProposedOrder,
     evaluate_order,
 )
-from services.risk.approval import (
-    ApprovalRequest,
-    ApprovalStatus,
-    compute_expiry,
-    create_approval_request,
-    requires_approval,
-)
 from services.shared.audit import (
     audit_approval_requested,
     audit_duplicate_prevented,
@@ -57,15 +62,9 @@ from services.shared.audit import (
     audit_order_submitted,
     audit_risk_evaluated,
 )
-from services.lake_publisher.worker import (
-    publish_trade_order,
-    publish_trade_fill,
-    publish_positions_daily_batch,
-    LAKEHOUSE_BUCKET,
-)
 from services.shared.config import load_config
 from services.shared.db import get_pg_pool, get_redis
-from services.shared.logging import Span, new_trace_id, set_trace_context, setup_logging
+from services.shared.logging import setup_logging
 from services.shared.metrics import (
     ORDERS_DUPLICATES_PREVENTED,
     ORDERS_FILLED,