{
  "step": "C379",
  "status": "completed",
  "date": "2026-09-24",
  "title": "Source contexts and Mirror coupling of all common P/J hits",
  "previous_certificate_sha256": "351be5f2d64f77080c8cb8d67ecf6c8c5f1bf9b2110b1396f2422b3c5ee171e7",
  "bindings": {
    "step": "STEP.json",
    "source_manifest": "SOURCE_MANIFEST.json",
    "report": "490d_C379_Common_P_J_Source_Contexts_and_Mirror_Coupling_20260924.md",
    "checkpoint": "490d_Mirror_Checkpoint_After_C379_20260924.md",
    "data": "evidence/DATA.json",
    "results": "evidence/RESULTS.json",
    "calculation": "evidence/CALCULATION.py",
    "verifier": "evidence/check.py",
    "next_step_decision": "NEXT_STEP_DECISION.json",
    "replay": "REPLAY.json",
    "control_integrity": "CONTROL_INTEGRITY.json",
    "readme": "README.md"
  },
  "step_sha256": "dfab8eb6b5c6528ffd2aafa52780d91945936d229bb56a57834d804039a35b94",
  "source_manifest_sha256": "3cae0701868281dbd260ef089c23daaff3015057e84308174f72bcb68184f5bc",
  "report_sha256": "0b9ccc8d9cad0d8867ba29fe7e1d648a3bbbc345076fd3b14d8f7c23f3ea779b",
  "checkpoint_sha256": "ce91df057d6e013352d3b44e7e97a5b09329eb2ae5c8528fcf2ac5edaa876e64",
  "data_sha256": "684f61de89ab241f2af5fb5b40eab5f3b01667bd5cf0af258f47f1abc32807e6",
  "results_sha256": "8ddad73048288c7aa75e60e0063bdf1706558843d97eb713f1bb1099f3b75280",
  "calculation_sha256": "36378d2b4d2fc9c2eb8aef920ffdde0115f8254fa7135c69e03c339d014c17a2",
  "verifier_sha256": "9f175670abb70f7819dd7f6d997ff0bef2e58df8dffd763b433f6c6cd62e332d",
  "next_step_decision_sha256": "ec55929be4007bd4c633a0ea5701a3fcddc4c7df806468826476825dc3fff98d",
  "replay_sha256": "a34e5c9703a2435e32c5892c54d961d2c7e0d6330adb7a0e45476363a5e59cf6",
  "control_integrity_sha256": "9810807cb07b02f43f568f68bb82cb41a6eeff6799902254b4932e5c350ac838",
  "readme_sha256": "6f2e0ce6030c908fe94fc79349ca7679a074131e411eb19ee1a3deeb1496a569",
  "assertions_passed": 51,
  "source_checks_passed": 14,
  "main_result": "All four regular hits have coherent adjacent-Gear MT Noah ancestry, with SP-primary and LXX-OFF counterpart aliases and sourced2K sides. The lower branch is a uniform minus215 translation. Of24 cumulative/regular coordinate pairings, only the original full430 i3/i5 configurations retain the17K cross-spans.",
  "limits": "Context translations and tradition aliases reproduce local geometry but are not independent witnesses or permission to change the original cross-field anchoring. No cumulative215 shift is introduced.",
  "canonical_or_graph_edits": false,
  "new_independent_agent_review": false,
  "review_provenance": "Root-agent analysis and deterministic replay; no new independent-agent review",
  "next_proposed_step": "Build the finite source paths obtained by composing the common P/J edges while retaining each edge’s actual Flood pivots. Determine maximal path lengths, source ancestry and the pivot changes needed for continuation; do not extend the source domains.",
  "next_step_executed": false
}