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harness-bench

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Create (`bench create {repo}`) or verify (`bench verify {suite.json}`) a @metaharness/darwin bench suite, the fixed corpus `harness-evolve --bench` scores variants against. Use when preparing an evolution benchmark. Degrades gracefully without darwin.

plugins/ruflo-metaharness/skills/harness-bench/SKILL.md

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Nov 10, 2026
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MIT

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Surfaces `metaharness-darwin bench <create|verify>` — the supporting verb
for `harness-evolve --bench`. Use when you want evolution scored against a
fixed corpus (independent of `npm test`) so champion fitness is comparable
across commits or across forks of the same harness.

## When to use

- Setting up a new evolution pipeline for a repo whose `npm test` is
  flaky, slow, or undersized — scaffold a deterministic bench suite once,
  then evolve against it repeatedly.
- CI: `bench verify` the checked-in suite on every PR that touches it
  (cheap; ~5s).
- Forking a harness to a new domain: copy and edit the suite to retarget
  the evaluation without losing comparability to the parent.
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