Performance Analysis Toolkit - Fix Incorrect Results

Performance Analysis Toolkit - Fix Incorrect Results: a task in termgrade-bandcentral-gemma4-31b-bash: TermGrade Band-Central: the 151-task selection and its splits (Harbor dataset). The performance analysis toolkit at /opt/pyperf/ is producing incorrect results when analyzing Python function pairs.

The task

The performance analysis toolkit at `/opt/pyperf/` is producing incorrect results when analyzing Python function pairs.

Part of ai-and/termgrade-bandcentral-gemma4-31b-bash.