{
  "step": "C313",
  "status": "passed",
  "author_review": "Source normalization, five-case label match, direct17K versus full-chain distinction, exact signed phase actions",
  "independent_math_review": "evidence/C313_Independent_Math_Review.md",
  "independent_script": "evidence/C313_Independent_Math.py",
  "independent_results": "evidence/C313_Independent_Math_Results.json",
  "source_review": "evidence/C313_Source_Review.md",
  "agreement": "Five center/state rows and ten correlated phase rows agree; independent input hashes match.",
  "script_portability_note": "Optional source-directory naming fallback accepts PREVIOUS_DATA.json without changing mathematical logic.",
  "historical_corroboration": false,
  "source_prescribed_selector_established": false,
  "next_step_executed": false
}