Methodology
Goal
Produce the strongest practical modernization proof possible without paid or licensed legacy runtime infrastructure.
Method
- Pin the upstream AWS CardDemo source repository and commit.
- Hash the source files and generated modern files.
- Extract capabilities from legacy source, copybooks, BMS maps, JCL, seed data, and static contracts.
- Build a one-for-one capability ledger.
- Implement the modern Python/SQLite target against those source-derived contracts.
- Generate receipts, golden traces, edge cases, and parity reports.
- Execute the modern service against static/source-oracle replay checks.
- Run clean-copy reproduction and API smoke checks.
- Run a strict A-grade gate that refuses promotion without live legacy runtime traces.
- Publish the evidence with explicit boundaries.
Current Proof State
- B-grade static/source-oracle capabilities:
50 - F-grade gaps:
0 - Gap count:
0 - Static replay passed:
True - No-cost confidence posture:
strong_pre_runtime_confidence - A-grade promotable:
False
What Would Upgrade This To A
The A-grade gate requires accepted live legacy runtime trace records for every capability. Each record must bind a capability ID to the pinned source head, a live runtime trace kind, a raw legacy trace hash, a modern observation hash, a comparator version, and matched=true.
The current bundle has zero accepted live runtime matches because no paid/licensed legacy runtime was executed.