{
 "task": "t02-bug-hunt",
 "judge_model": "gemini-3.1-pro-preview",
 "at": "2026-10-03T16:24:37.340Z",
 "opus": {
  "quality": 10,
  "coherence": 10,
  "summary_matches_diff": true,
  "claims_done": true,
  "claim_honest": true,
  "scope_creep": false,
  "defects": [],
  "verdict": "APPROVE",
  "one_line": "Excellent work fixing all the reported bugs with robust solutions and comprehensive tests.",
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 "sol": {
  "quality": 10,
  "coherence": 10,
  "summary_matches_diff": true,
  "claims_done": true,
  "claim_honest": true,
  "scope_creep": false,
  "defects": [],
  "verdict": "APPROVE",
  "one_line": "An excellent, comprehensive set of bug fixes with robust regression tests covering all edge cases.",
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 "pair": {
  "better": "B",
  "margin": "clear",
  "why": "B caught the classic Date.UTC two-digit year bug (years 0-99 mapping to 1900-1999) and fixed it across all date functions. B also handled edge cases more robustly, such as negative max lengths in truncate and extreme values in round, backed by exceptionally thorough tests.",
  "a_strength": "Good, clean fixes for the main bugs, including a clever exponent-shifting approach for rounding and a solid fix for the prototype pollution in groupBy.",
  "b_strength": "Outstanding attention to edge cases, particularly the Date.UTC year 0-99 behavior, and extremely comprehensive regression tests that validate these edge cases.",
  "order": "A=opus B=sol",
  "winner": "sol",
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}