# AWS CardDemo A-Grade Promotion Gate

Report version: `carddemo_a_grade_promotion_readme_v0`

This file records the attempt to promote the AWS CardDemo modernization proof from B-grade static/source-oracle parity to A-grade live runtime parity.

## Decision

- Action: `do_not_promote`
- Promotable to A: `False`
- Current grade counts: `{'A': 0, 'B': 50, 'C': 0, 'F': 0}`
- Required live legacy runtime matches: `50`
- Accepted live legacy runtime matches: `0`
- Missing live legacy runtime matches: `50`
- Current static/source-oracle status: B=`50`, F=`0`, gaps=`0`

## Rubric Boundary

A-grade is reserved for actual legacy COBOL/CICS runtime traces matched against modern observed behavior for each capability. The existing proof remains B=50/F=0/gaps=0 under the current static/source-oracle rubric.

This is not live COBOL/CICS all-path runtime equivalence.

## Replay Command

```powershell
python tools\evaluate_a_grade_promotion.py --source-root ..\source --out-dir .\final_proof
```

To test a future live trace corpus, add:

```powershell
--legacy-trace-dir <path-to-live-trace-json-corpus>
```

## Required Trace Contract

Each accepted live trace record must include the fields listed in `A_GRADE_PROMOTION_REPORT.json` under `legacy_runtime_trace_contract`. The key requirements are: pinned source head, live trace kind, matched=true, a capability ID from the ledger, and SHA-256 hashes for the raw legacy trace and modern observation.