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Dragan Spiridonov be28f15f9c feat(benchmarks): ADR-109 live cross-family interaction run + two harness fixes (issue #522)
Live runner executed for real: OpenAI gpt-4o-mini under test, Gemini
2.5-flash as the non-same-family judge, hidden-test ground truth, seeded
X/Y counterbalance, pre-registered RUBRIC-v1 hash embedded per row.

The real run surfaced and fixed two harness bugs:
1. Ground-truth fix-rate was coupled to judge-row validity — a fixed bug
   that zeroed a real B-arm fix when its judge pass returned no winner.
   Ground truth is now tracked per (scenario, arm), independent of the
   judge; numbers are internally consistent.
2. Judge row model: emit ONE comparison row per (scenario, pass) — the
   unit the sign test clusters — instead of duplicated per-arm rows.
   Plus judge-verdict parse hardened (last-verdict wins, broader regex,
   more tokens): unparseable rate 50% -> 25%, the rest excluded in code.

Result at n=2: ground truth A=0.50 B=0.00, judge clustered 1-1 p=1.0 —
no arm signal, honestly underpowered. Corpus scaling is the path to a
claim (stated in results README + ADR).

Verified: 30 deterministic tests (stats + safety) green; real run $0.003.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-11 12:55:54 +00:00
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