From ed713fdf4015eca17d3a0810bab7c6f859463406 Mon Sep 17 00:00:00 2001
From: agentson <agentson@localhost>
Date: Mon, 2 Mar 2026 02:24:01 +0900
Subject: [PATCH] style: wrap long helper signature in backtest pipeline

---
 src/analysis/backtest_pipeline.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/analysis/backtest_pipeline.py b/src/analysis/backtest_pipeline.py
index ce27f1f..da39cc5 100644
--- a/src/analysis/backtest_pipeline.py
+++ b/src/analysis/backtest_pipeline.py
@@ -236,7 +236,11 @@ def _m1_pred(train_labels: Sequence[int]) -> int:
     return train_labels[-1]
 
 
-def _build_execution_model(*, cost_model: BacktestCostModel, fold_seed: int) -> BacktestExecutionModel:
+def _build_execution_model(
+    *,
+    cost_model: BacktestCostModel,
+    fold_seed: int,
+) -> BacktestExecutionModel:
     return BacktestExecutionModel(
         ExecutionAssumptions(
             slippage_bps_by_session=dict(cost_model.slippage_bps_by_session or {}),