# Autonomous R&D Change Review

**SKU:** CAIN-A75-009  
**Development:** #9 End-to-end autonomous R&D loops  
**Product status:** DELIVERABLE  
**Engine:** `rnd_change` (`cain_a75_engines/rndchange/engine.py`)  
**Profile:** `parser_roundtrip_fix`  
**Generated:** 2026-11-12T07:59:12Z UTC

## Result

VERIFIED: improvement 0.09 over 95% CI 0.02, one failing-then-passing test, no regression; 22/22 change-failure cases as expected

- **parser_roundtrip_change**: VERIFIED
- **honest_improvement**: ACCEPT
- **gain_within_confidence_interval**: REJECT
- **no_failing_test_that_now_passes**: REJECT
- **regression_introduced**: REJECT
- **not_preregistered**: REJECT
- **too_few_trials**: REJECT
- **seed_missing**: REJECT
- **authorization_expired**: REJECT
- **scope_does_not_cover_change**: REJECT
- **diff_hash_mismatch**: REJECT
- **rationale_missing**: REJECT
- **held_out_missing**: REJECT
- **held_out_used_for_selection**: REJECT
- **held_out_failed**: REJECT
- **bad_direction**: REJECT
- **duplicate_file**: REJECT
- **malformed_file_hash**: REJECT
- **artifact_hash_missing**: REJECT
- **experiment_not_linked**: REJECT
- **claim_overstates_improvement**: REJECT
- **wrong_schema**: REJECT
- **garbage**: REJECT

## Limits of this run

Reviews supplied numbers and test results. It does not re-run the experiment, rebuild the code, or prove the metric measures what the team thinks. The run is Ed25519-signed; pin the issuer key out of band.

This is a bounded run on a sample. It is not an assessment of any production system, not a
certification, and not a signed attestation. The accompanying `manifest.json` records SHA-256
hashes so a recipient can detect a changed file. The manifest is not a signature and not an
attestation; it does not prove who produced the artifact.

## What this is not

- Not a vendor integration, partnership or endorsement.
- Not legal, tax, clinical, insurance or safety advice.
- Not a third-party audit, SOC 2 report, ISO certification or patent filing.
- Not a production write action: no downstream tool was called.

Prices and packaging are proposals. Built by a three-person team.