style(dro-ara): black-format 2 test files (CI python-quality)

Author: neuron7xLab

tests/research/dro_ara/test_backtest_smoke.py

@@ -85,9 +85,9 @@ def test_backtest_on_gbm_has_flat_and_active_bars_mix() -> None:
     active_timeline = positions[512 + 64 :]
     flat_bars = int(np.sum(active_timeline == 0))
     flat_frac = flat_bars / max(len(active_timeline), 1)
-    assert flat_frac >= 0.10, (
-        f"Filter must zero some GBM bars (DRIFT path), got flat_frac={flat_frac:.3f}"
-    )
+    assert (
+        flat_frac >= 0.10
+    ), f"Filter must zero some GBM bars (DRIFT path), got flat_frac={flat_frac:.3f}"
     assert set(np.unique(positions).tolist()) <= {-1, 0, 1}
 
 

tests/research/dro_ara/test_power_mc.py

@@ -76,9 +76,9 @@ def test_gbm_drift_not_classified_as_critical_majority() -> None:
     total = sum(gbm.values())
     assert total > 0
     non_critical_rate = (total - gbm["CRITICAL"]) / total
-    assert non_critical_rate >= 0.60, (
-        f"GBM should land in non-CRITICAL regimes majority: {non_critical_rate:.3f}"
-    )
+    assert (
+        non_critical_rate >= 0.60
+    ), f"GBM should land in non-CRITICAL regimes majority: {non_critical_rate:.3f}"
 
 
 def test_bootstrap_rate_valid_range() -> None: