final_proof/NO_COST_CONFIDENCE_README.md

AWS CardDemo No-Cost Confidence Proof

Report version: carddemo_no_cost_confidence_readme_v0

This artifact answers the practical question: how far did we get without paying for or depending on a licensed legacy runtime?

Result

• Reviewer posture: strong_pre_runtime_confidence
• Ready for pre-runtime review: True
• Paid runtime used: False
• Public actions allowed: False
• Remaining gap: live legacy COBOL/CICS/VSAM/JCL runtime validation on a real or licensed-compatible runtime

Evidence We Can Produce For Free

• Capability coverage: 50 capabilities.
• Static/source-oracle ready: 50 capabilities.
• Source references attached to capability ledger: 101.
• Static replay passed: True.
• Static replay hash: 912e98e11d46cd967070d06ec17aaed3402bed44026267d1906ea6a2d54b9a42.
• Golden traces: 34.
• Edge cases: 40.
• Clean-copy/API smoke evidence is recorded in FINAL_RECEIPT_SUMMARY.json.

Legacy Source Runtime Shape

• COBOL programs scanned: 44.
• CICS programs: 25.
• Non-CICS COBOL programs: 19.
• Free GnuCOBOL probe candidates: 17.
• Programs still requiring mainframe-compatible runtime for honest execution: 27.

A-Grade Boundary

• A-grade decision: do_not_promote.
• Promotable to A: False.
• Accepted live runtime matches: 0.
• Missing live runtime matches: 50.

This does not pretend to be live COBOL/CICS equivalence. It shows that the unpaid work is strong and that the remaining proof step is specifically live legacy runtime validation.