compare-harnesses

Codex skill: diff two scaffolded harnesses — the ADR-031 Bundle JSON Pattern surfaced through Codex (iter 105 → iter 109).

What it does

Two-harness diff. Useful when you've forked an upstream template, when a support ticket says "mine and theirs scaffolded different things", or when a CI script wants a byte-equality check between a candidate scaffold and a known-good baseline.

Reports three sections:

1. Manifest meta — same name? same kernel? same surface?
2. Hosts — which host adapters each side ships (claude-code / codex / pi-dev / hermes / openclaw / rvm)
3. Files — added / removed / changed (per-file SHA-256 fingerprints; the cheapest possible byte-equality test)