{
  "note": "Author-audited reference set of factual errors in the four ungated briefs. Written by re-reading each brief against factbase.json and the six primary sources, independently of gate output. 'matcher' is a substring that must appear in a gate finding's detail or sentence for that error to count as caught. See reports/ground_truth_errors.md for the reasoning and Limitations for why this is not blind adjudication.",
  "errors": [
    {"id": "S1-a", "file": "S1_general_ungated.md", "class": "inflated quantity",
     "matcher": "20,000", "note": "~17,600 recovered actions (C001)"},
    {"id": "S1-b", "file": "S1_general_ungated.md", "class": "narrative distortion",
     "matcher": "Over the next week", "note": "intrusion into HF ran 11-13 July (C003)"},
    {"id": "S1-c", "file": "S1_general_ungated.md", "class": "narrative distortion",
     "matcher": "almost a week", "note": "detection fired within the window; escalation failed (C026)"},
    {"id": "S1-d", "file": "S1_general_ungated.md", "class": "wrong named entity",
     "matcher": "ChatGPT", "note": "the models that refused were Claude Opus and Fable (C027)"},
    {"id": "S1-e", "file": "S1_general_ungated.md", "class": "narrative distortion",
     "matcher": "five days", "note": "implies concealment; OpenAI alerted 19 July, disclosed 21 July (C035)"},
    {"id": "S1-f", "file": "S1_general_ungated.md", "class": "misattributed speaker",
     "matcher": "unprecedented", "note": "corporate wording, not the CEO's (C051)"},
    {"id": "S1-g", "file": "S1_general_ungated.md", "class": "wrong named entity",
     "matcher": "Chinese AI", "note": "the fallback was GLM-5.2 on HF's own infrastructure (C027)"},
    {"id": "S2-a", "file": "S2_tech_ungated.md", "class": "inflated quantity",
     "matcher": "20,000", "note": "~17,600 (C001)"},
    {"id": "S3-a", "file": "S3_security_ungated.md", "class": "inflated quantity",
     "matcher": "20,000", "note": "~17,600 (C001)"},
    {"id": "S4-a", "file": "S4_policy_ungated.md", "class": "spelled-out arithmetic",
     "matcher": "eight days", "note": "13 July to 19 July is six days, not eight (C002, C035)"}
  ]
}