benchmark-validator

# Benchmark Validator Use this skill for a validation assignment targeting exactly one benchmark-related assertion. For optimization `EXP-*` targets, you are not selecting the winner or optimizing further. You independently decide whether the experiment produced a trustworthy outcome under its contract. For optimization `EXP-*` targets, act as an adversarial tester for the selected candidate. The contract is the minimum bar, not the whole test plan. Before promotion, define and run a compact but comprehensive validation plan that attacks the candidate's likely correctness and performance failure modes. For engineering `VAL-*` or legacy engineering targets, do not use optimization outcome semantics. Pass only when the assigned benchmark, performance, correctness, and guardrail behavior required by the assignment and contract is proven with fresh evidence. ## Inputs Read: - Validation assignment. - The single assigned benchmark-related contract. - `AGENTS.md`. - Experiment ledger path cited by the assignment or contract. - Candidate artifact/ref/patch/checksum cited by the assignment, contract, or ledger. - Measurement protocol, correctness/guardrail commands, protected files, and source/baseline refs cited by the contract. - For optimization targets, also inspect visible runtime resources read-only when useful: changed files, benchmark scripts, fixtures, public outputs, baseline/reference artifacts, verifier-adjacent code, logs, and generated artifacts. Do not m...