fix citation_audit answer parsing: tolerate units attached to answer_given

tests/test_analysis/test_citation_audit.py

@@ -46,6 +46,32 @@ def test_audit_separates_faithful_from_not_in_table(tmp_path):
     assert summary["examples"][0]["nearest_table_value"] == 1.46
 
 
+def test_audit_parses_answers_with_units_attached(tmp_path):
+    """Regression: answer_given values like "1.46 meters" (units not stripped by the
+    adapter) must still count as answered and be checked against the table -- an
+    early version used bare float() and silently misclassified every such answer as
+    unanswered, corrupting both total_answered and faithful_rate."""
+    code_path = tmp_path / "scene.json"
+    _write_code(code_path, {"chair": {"table": {"distance": "1.46 meters", "closeness rank": 1}}})
+    results_dir = tmp_path / "results"
+    (results_dir / "scene").mkdir(parents=True)
+    records = [
+        {"model": "m", "question_type": "object_abs_distance", "answer_given": "1.46 meters",
+         "spatial_code_path": str(code_path), "scene": "scene", "question_id": 1,
+         "condition": "base:x"},
+        {"model": "m", "question_type": "object_abs_distance", "answer_given": "no idea",
+         "spatial_code_path": str(code_path), "scene": "scene", "question_id": 2,
+         "condition": "base:x"},
+    ]
+    for i, record in enumerate(records):
+        (results_dir / "scene" / f"{i}.json").write_text(json.dumps(record))
+
+    summary = citation_audit.audit(results_dir, "m")
+    assert summary["total_answered"] == 1
+    assert summary["faithful"] == 1
+    assert summary["unanswered"] == 1  # "no idea" has no number at all -- genuinely unanswered
+
+
 def test_audit_respects_condition_prefix(tmp_path):
     code_path = tmp_path / "scene.json"
     _write_code(code_path, {"chair": {"table": {"distance": "1.46 meters", "closeness rank": 1}}})