{
 "task": "t01-kanban-api",
 "judge_model": "gemini-3.1-pro-preview",
 "at": "2026-10-03T16:32:50.955Z",
 "opus": {
  "quality": 10,
  "coherence": 10,
  "summary_matches_diff": true,
  "claims_done": true,
  "claim_honest": true,
  "scope_creep": false,
  "defects": [],
  "verdict": "APPROVE",
  "one_line": "An exceptionally clean and robust implementation that elegantly handles routing, validation, and edge cases using only the Node standard library.",
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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, robust implementation of the Kanban API with comprehensive integration tests and clean routing logic.",
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 "pair": {
  "better": "B",
  "margin": "clear",
  "why": "Solution B uses a much more elegant architecture, featuring a declarative router and lazy body parsing to cleanly enforce the 404-over-400 precedence rule. Furthermore, calculating positions dynamically from array indices completely eliminates the need for manual renumbering and prevents a whole class of synchronization bugs.",
  "a_strength": "Handles the edge case of `PORT=0` correctly, whereas Solution B would fall back to 3000. Also uses modern async iterators to read the request body.",
  "b_strength": "The declarative routing table and lazy `body()` parser make the request handlers incredibly clean and easy to read. Deriving `position` dynamically via `indexOf` is a brilliant simplification.",
  "order": "A=sol B=opus",
  "winner": "opus",
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}