Prompt
Extend modern/tests/pilot_parity_test.py so that it:
- Invokes the legacy pilot flow using whatever wrapper or command we have for COBOL (for example a script that runs the JCL in a test harness).
- Invokes the new implementation through its API or batch entry point.
- Compares the outputs according to the “Parity and comparison strategy” in pilot_reporting_validation.md.