immutable-parity-proof

name	immutable-parity-proof
description	Produce content-addressed parity evidence and protect the frozen upstream snapshot while porting or verifying native surfaces.
origin	repo-local, grounded in official GitHub Actions artifact and benchmark guidance

Immutable Parity Proof

Use this skill whenever a parity claim, frozen-snapshot claim, or native-C++ claim is about to be made.

Required checks

1. Verify the frozen snapshot manifest with: .venv/bin/python scripts/frozen_source_manifest.py --verify
2. Run differential tests against the frozen snapshot on identical inputs.
3. Prefer content-addressed comparisons:
   • serialized output trees for store-backed paths
   • patched outbound call payloads for external side effects
   • stable JSON-like outcome snapshots for deterministic object behavior
4. If the change touches cpp/, scan the native tree with: .venv/bin/python scripts/check_native_cpp.py --all
5. Treat any embedded-Python execution in cpp/ as native-debt, not as fully converted C++ coverage.

Reporting rule

• State the manifest verification result.
• State the exact parity suites that ran.
• If a surface is still wrapper-heavy or depends on embedded Python in cpp/, do not count it as native-converted coverage.