{
  "version": "v2.3",
  "trust_model": "Generation is not export. Every artifact must pass ST3GG scan, purification, and human checkpoint before release.",
  "examples": [
    {
      "id": "safe_clean_png",
      "label": "Safe clean PNG",
      "filename": "st3gg_safe_clean.png",
      "expected_status": "pass",
      "expected_export_gate": "clear",
      "note": "Valid PNG signature and no trailing bytes after IEND."
    },
    {
      "id": "blocked_png_trailing_data",
      "label": "Blocked PNG with trailing data",
      "filename": "st3gg_blocked_trailing.png",
      "expected_status": "review",
      "expected_export_gate": "blocked",
      "note": "Valid PNG signature with extra bytes after the IEND marker."
    }
  ]
}