{
 "task": "t06-migration",
 "judge_model": "gemini-3.1-pro-preview",
 "at": "2026-10-03T16:23:47.687Z",
 "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 robust and complete solution that handles SQLite migrations flawlessly, including edge cases like foreign keys and sequence restoration.",
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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 solution that perfectly handles the schema migration, preserves all constraints and sequences, and maintains full backward compatibility.",
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 },
 "pair": {
  "better": "tie",
  "margin": "small",
  "why": "Both solutions are exceptionally well-crafted, correctly implementing the atomic migration, schema updates, and backward compatibility. Solution A stands out for its memory-efficient streaming during the data copy and its use of `PRAGMA foreign_key_check`, while Solution B excels in its dynamic handling of arbitrary indexes/triggers and robust connection state management.",
  "a_strength": "Uses a generator expression with `executemany` to stream rows during migration (avoiding loading the entire table into memory) and explicitly verifies data integrity with `PRAGMA foreign_key_check`.",
  "b_strength": "Dynamically queries and recreates any existing indexes or triggers rather than hardcoding them, and safely restores the connection's isolation level and pragma states after the migration.",
  "order": "A=sol B=opus",
  "winner": "tie",
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 }
}