update

tests/test_webapp_report_builder.py

@@ -88,3 +88,30 @@ def test_infer_metrics_excludes_weight_columns_without_snapshot(tmp_path: Path)
     )
 
     assert _infer_metrics_from_scores(run_dir) == ["faithfulness"]
+
+
+def test_build_report_ranks_noise_sensitivity_with_lower_values_as_better(tmp_path: Path) -> None:
+    """Lowest-sample review should treat higher noise sensitivity as worse."""
+    run_dir = tmp_path / "run"
+    run_dir.mkdir(parents=True, exist_ok=True)
+    (run_dir / "scores.csv").write_text(
+        "\n".join(
+            [
+                "sample_id,question,noise_sensitivity",
+                "s-good,q1,0.10",
+                "s-warn,q2,0.30",
+                "s-bad,q3,0.90",
+            ]
+        ),
+        encoding="utf-8",
+    )
+    (run_dir / "summary.md").write_text("summary", encoding="utf-8")
+    (run_dir / "optimization_advice.md").write_text("", encoding="utf-8")
+
+    report = build_report(run_dir, ["noise_sensitivity"])
+
+    assert [sample.sample_id for sample in report.lowest_samples[:3]] == [
+        "s-bad",
+        "s-warn",
+        "s-good",
+    ]