fix: black formatting and Vertica Decimal special-value handling

- Reformat anomalous_dimensions list to satisfy Black 88-char line limit
- Fix TypeError in adapter_query_runner when Vertica returns Decimal
  special values (Infinity/NaN): as_tuple().exponent is a string ('F'/'n')
  for those cases, not an int, causing '>= not supported between str and int'

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: joostboon

integration_tests/tests/adapter_query_runner.py

@@ -52,9 +52,14 @@ def _serialize_value(val: Any) -> Any:
     * Everything else is returned unchanged.
     """
     if isinstance(val, Decimal):
-        # Match the Jinja macro: normalize, then int or float
+        # Match the Jinja macro: normalize, then int or float.
+        # Note: for special values (Infinity, NaN), as_tuple().exponent is a
+        # string ('F' or 'n'), not an int — convert those directly to float.
         normalized = val.normalize()
-        if normalized.as_tuple().exponent >= 0:
+        exponent = normalized.as_tuple().exponent
+        if isinstance(exponent, str):
+            return float(normalized)
+        if exponent >= 0:
             return int(normalized)
         return float(normalized)
     if isinstance(val, (datetime, date, time)):

integration_tests/tests/test_dimension_anomalies.py

@@ -362,7 +362,14 @@ def test_dimension_anomalies_alert_description_many_failures(
     test_date, *training_dates = generate_dates(base_date=utc_today - timedelta(1))
 
     # 6 dimension values all spike on test_date (>5 threshold)
-    anomalous_dimensions = ["Batman", "Superman", "Spiderman", "IronMan", "Thor", "Hulk"]
+    anomalous_dimensions = [
+        "Batman",
+        "Superman",
+        "Spiderman",
+        "IronMan",
+        "Thor",
+        "Hulk",
+    ]
 
     data: List[Dict[str, Any]] = [
         {TIMESTAMP_COLUMN: test_date.strftime(DATE_FORMAT), "superhero": hero}