{
 "task": "t11-messy-money",
 "judge_model": "gemini-3.1-pro-preview",
 "at": "2026-10-03T16:13:05.747Z",
 "opus": {
  "quality": 10,
  "coherence": 10,
  "summary_matches_diff": true,
  "claims_done": true,
  "claim_honest": true,
  "scope_creep": false,
  "defects": [],
  "verdict": "APPROVE",
  "one_line": "An excellent, robust, and perfectly compliant solution that handles all edge cases gracefully.",
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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 exceptionally robust and well-tested solution that handles all edge cases, including Decimal precision and date-based rate fallbacks, perfectly.",
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 "pair": {
  "better": "A",
  "margin": "clear",
  "why": "Solution A avoids a common locale-dependent bug by manually parsing month abbreviations instead of relying on `strptime` with `%b`. It also handles malformed CSVs (like blank lines or missing fields) more gracefully and avoids overcomplicating the Decimal precision context.",
  "a_strength": "Robust date parsing that is immune to system locale settings, excellent defensive programming (e.g., falling back to the earliest rate if a date precedes all known rates), and clean, straightforward logic.",
  "b_strength": "Includes a comprehensive suite of unit tests and correctly implements all business rules, including a clever (though unnecessary) dynamic precision calculation for Decimal.",
  "order": "A=opus B=sol",
  "winner": "opus",
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 }
}