SIENTIAPDE-1973

SIENTIAPDE-1973: Refactor unit tests for improved readability, primarily by splitting chained assertions into individual statements and minor fixture import adjustments.

tests/unit/io/test_data_sink_status.py

@@ -58,7 +58,8 @@ async def test_update_write_status_targets_model_row_with_precedence():
     assert sql.startswith('UPDATE sientia_data.pred_m1 SET write_status=')
     assert 'CASE sientia_data.pred_m1.write_status WHEN' in sql
     # values must be bound params, never interpolated into the SQL text itself
-    assert '2026-07-13T00:00:00Z' not in sql and "'ok'" not in sql
+    assert '2026-07-13T00:00:00Z' not in sql
+    assert "'ok'" not in sql
     assert compiled.params['write_status'] == 'ok'
     assert '2026-07-13T00:00:00Z' in compiled.params.values()
     assert _outcome_metric(sink) == 'updated'