{
  "label": "Chronicle",
  "config": "production engine v004 — length attainment + fork-at-88% fresh-context ending, K=2 judge selection, E2 style repair, Q10 chapterization; real production pipeline end-to-end",
  "provenance": {
    "round": "chronicle3r (corrected)",
    "note": "The initially generated chronicle3 cohort ran during a 2026-08-31 outage in which the E2/Q10 post-draft stages were silently disabled (draft-only books); it was withdrawn and is preserved as outage-invalid. chronicle3r is the SAME six frozen-brief drafts completed through the restored full pipeline and re-scored with the same frozen instrument.",
    "incident": "docs/INCIDENT_2026-08-31_E2_Q10_DISABLED.md",
    "invalid_cohort_archive": "sagabench/results/chronicle3-outage-invalid/"
  },
  "prereg": "SAGABENCH_FULLNOVEL_CONTRACT.md protocol, round 3 (registry: docs/sagabench-fullnovel-artifacts/chronicle3-*.json)",
  "generated_at": "2026-08-31T18:28:34.195Z",
  "n_books": 6,
  "n_eligible": 6,
  "n_scored": 6,
  "sagascore": 69.23,
  "sagascore_min": 62.76,
  "sagascore_max": 71.78,
  "win_means": {
    "opening": 78.57,
    "25k": 71.68,
    "50k": 67.1,
    "75k": 64.2,
    "ending": 64.58
  },
  "whole_book": 74.62,
  "completion_pct": 103.17,
  "books": [
    {
      "name": "chronicle3r-B2-sustained-r1",
      "brief": "B2",
      "words": 87000,
      "ratio": 1.02,
      "eligible": true,
      "windows": {
        "opening": 78.8,
        "25k": 72.5,
        "50k": 71.3,
        "75k": 66.3,
        "ending": 70
      },
      "sagascore": 71.78,
      "whole_book": 81.3
    },
    {
      "name": "chronicle3r-B2-sustained-r2",
      "brief": "B2",
      "words": 90456,
      "ratio": 1.06,
      "eligible": true,
      "windows": {
        "opening": 76.3,
        "25k": 72.5,
        "50k": 67.5,
        "75k": 57.5,
        "ending": 67.5
      },
      "sagascore": 68.26,
      "whole_book": 72.5
    },
    {
      "name": "chronicle3r-B2-sustained-r3",
      "brief": "B2",
      "words": 85475,
      "ratio": 1.01,
      "eligible": true,
      "windows": {
        "opening": 77.5,
        "25k": 68.8,
        "50k": 57.5,
        "75k": 52.5,
        "ending": 57.5
      },
      "sagascore": 62.76,
      "whole_book": 76.3
    },
    {
      "name": "chronicle3r-N1-sustained-r1",
      "brief": "N1",
      "words": 89261,
      "ratio": 1.05,
      "eligible": true,
      "windows": {
        "opening": 82.5,
        "25k": 71.3,
        "50k": 65,
        "75k": 68.8,
        "ending": 65
      },
      "sagascore": 70.52,
      "whole_book": 71.3
    },
    {
      "name": "chronicle3r-N1-sustained-r2",
      "brief": "N1",
      "words": 88964,
      "ratio": 1.05,
      "eligible": true,
      "windows": {
        "opening": 80,
        "25k": 72.5,
        "50k": 70,
        "75k": 71.3,
        "ending": 65
      },
      "sagascore": 71.76,
      "whole_book": 72.5
    },
    {
      "name": "chronicle3r-N1-sustained-r3",
      "brief": "N1",
      "words": 84773,
      "ratio": 1,
      "eligible": true,
      "windows": {
        "opening": 76.3,
        "25k": 72.5,
        "50k": 71.3,
        "75k": 68.8,
        "ending": 62.5
      },
      "sagascore": 70.28,
      "whole_book": 73.8
    }
  ],
  "harness_validation": {
    "note": "Preregistered harness-level cohort (BESTENGINE_COHORT_PREREG.md @414fcd6), same treatment, generated before the production round",
    "sagascore": 69.48,
    "sagascore_min": 66.78,
    "sagascore_max": 71.28,
    "win_means": {
      "opening": 75.25,
      "25k": 72.3,
      "50k": 62.73,
      "75k": 70.65,
      "ending": 66.48
    },
    "whole_book": 74.42,
    "completion_pct": 102.51,
    "n_scored": 6,
    "n_books": 6
  }
}