cjc0013/aws-carddemo-no-cost-modernization-proof

AWS CardDemo No-Cost Modernization Proof

This repository publishes a reproducible proof bundle for a local modernization run against AWS CardDemo. It is intentionally not a claim of live COBOL/CICS all-path runtime equivalence.

Plainly: this is not a claim of live COBOL/CICS all-path runtime equivalence.

The practical claim is narrower and receipt-backed: we pushed the free/no-cost verification path as far as we reasonably could. The remaining validation requires a real or licensed-compatible legacy runtime for COBOL/CICS/VSAM/JCL execution.

In short: without paid/licensed legacy runtime access, this is as far as this proof can honestly go.

Headline Result

• Reviewer posture: strong_pre_runtime_confidence
• Ready for pre-runtime review: True
• Current static/source-oracle parity: B=50 / F=0 / gaps=0
• A-grade live runtime parity: A=0
• A-grade promotion gate: do_not_promote
• A-grade live matches accepted: 0
• A-grade live matches missing: 50
• Paid runtime used: False
• Legacy runtime equivalence claimed: False

Source Identity

• Upstream source repo: https://github.com/aws-samples/aws-mainframe-modernization-carddemo.git
• Upstream source commit: 59cc6c2fd7ebd7ef7925cad552a01a4b8b6e4d5e
• Source files hashed in receipt: 204
• Source hash digest: 0703f97553bde0f5bd170aa95ec8c771a975b397be7d9e8088ec6fbf31d333c2

The upstream AWS CardDemo source tree is not copied into this repository. Clone it from the upstream project at the exact commit above when reproducing.

Evidence Included

• final_proof/FINAL_PROOF_README.md: technical reviewer entry point.
• final_proof/FINAL_RECEIPT_SUMMARY.json: machine-readable receipt summary.
• final_proof/NO_COST_CONFIDENCE_REPORT.json: no-cost confidence evidence and methodology.
• final_proof/A_GRADE_PROMOTION_REPORT.json: strict A-grade gate and why it does not promote without live traces.
• final_proof/STATIC_ORACLE_REPLAY_REPORT.json: executable modern replay over static/source-derived oracles.
• METHODOLOGY.md: evidence method and proof boundaries.
• REPRODUCIBILITY.md: one-command local checks.
• DUE_DILIGENCE.md: quick reviewer checklist.
• modern_code/: modern Python/SQLite implementation snapshot and proof tooling.

No-Cost Evidence Summary

• Capability count: 50
• Static/source-oracle-ready capabilities: 50
• Capability source references: 101
• Golden traces: 34
• Edge cases: 40
• COBOL programs scanned: 44
• CICS programs identified: 25
• Free GnuCOBOL probe candidates: 17

The Unpaid Boundary

We cannot honestly push this to live runtime parity without access to a real or licensed-compatible legacy execution environment. That means one of:

• AWS Mainframe Modernization runtime access,
• Micro Focus / Enterprise Server-style runtime access,
• UniKix or equivalent runtime access,
• a real z/OS/CICS/VSAM/JCL endpoint,
• or another compatible environment capable of executing the original legacy paths.

Without that, the correct remaining statement is: the modernization is strongly supported by source-derived static oracles and executable modern replay, but final production-equivalence validation must happen on the legacy runtime owner’s environment.

Repository Type

This is published as a Hugging Face dataset-style proof artifact, not a trained model and not a hosted runtime.

HF repo target used for staging: cjc0013/aws-carddemo-no-cost-modernization-proof