{
  "step": "C444",
  "status": "completed",
  "title": "Local Reflection Source Grammar and its E/Mirror Boundary",
  "previous_certificate_sha256": "1fa632d4b98186f448f362033e696750b2d1a2fee22d9debac1ccf8a6874a7fa",
  "bindings": {
    "step": "STEP.json",
    "source_manifest": "SOURCE_MANIFEST.json",
    "report": "490d_C444_Local_Reflection_Grammar_and_E_Mirror_Boundaries_Synthesis_20260925.md",
    "checkpoint": "490d_Mirror_Checkpoint_After_C444_20260925.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",
    "review_0": "evidence/SECOND_METHOD.py",
    "review_1": "evidence/SECOND_METHOD_RESULTS.json"
  },
  "step_sha256": "f0df79db1d21841a9df3c79df985b0bd5672ab9b7a5781725d7cf4895bdcc556",
  "source_manifest_sha256": "d69660e9e01bbdd53d0f7d41934947324d3ac7cd5799b5b10e4225aea2cc0530",
  "report_sha256": "affd56ac04ea0e26fa3363ed82f6bf3d8a10be36f74ef30ed9c1b1d762627140",
  "checkpoint_sha256": "24bdb9e6798afebacef17f546b46e4768365c662e3d23d13ce3dfed319b73dad",
  "data_sha256": "c66b1ff55109e7427b31520979ec2b0a07723cfe635180e3af9aaedf10f09eef",
  "results_sha256": "c2dd93014c5929dc287e5bbc05ed002a4da4a2f26c4f5014e7b8a7fda3640737",
  "calculation_sha256": "b0695b85db5340e37d7f29e8929bc8c9cbae9435d92023172055f5db6f158082",
  "verifier_sha256": "61226d6621cddd2fc4ff6c4d4a19e4fdbe2eab7cf4ffab714d324c764479bc09",
  "next_step_decision_sha256": "7242830696482c87938f46324078613e63d06bb2f36ca1e579d3362e69318e52",
  "replay_sha256": "023a78f0639bee34bbfbdfe486f90090da6105dfefdf3628082bca0146ce562b",
  "control_integrity_sha256": "08d2f8a5987f61e235f75753157ad528755f646694a8bcf86b733ccf4c9c9e57",
  "readme_sha256": "69ecd2cbfede0cdf33b139ed6a0b69e6ce29b10f5eb1ff88f20aec3696812489",
  "review_0_sha256": "13209a605cf6ec3a16ddb84002e7454262e8497a8851054ea19b36002359a073",
  "review_1_sha256": "3a1d9dbfa87f7e7a44a3f6b9ecf84b2196e4197fec87cba607272128eba03b8c",
  "assertions_passed": 58,
  "source_checks_passed": 63,
  "main_result": "C435–C444 complete. The source-derived E factorization has one additional mixed-direction loop3206→3170→3206, centered with its pivots on existing MT Noah3188 at radii18/432=1/24. Four sourced centers support partial reflection domains61/67/19/61. Six source classes partition258 labelled pairs/106 coordinate orbits; Noah complements and opposed500 transport supply the main reductions, with explicit SP/Flood aliases. Reflection conjugacy is exact, but only the zero-net loop is sourced in both E orders; the reflected2K path4228/4356/4420 is absent. The fixed Mirror retains one4-year MT Noah/LXX-OFF Shem pair but no image of the core profile in the frozen cumulative menu. All10 steps verified and preserved; C445 unexecuted.",
  "limits": "Source grammar and affine relations are finite comparisons, not reviewed calendar-operation prescriptions or historical-design proofs. Regular Gears remain Noah/Shem/Flood only. No new global axis, fitted source, phase, primer reopening or canonical graph edit.",
  "canonical_or_graph_edits": false,
  "new_independent_agent_review": false,
  "next_step_executed": false,
  "next_proposed_step": "Census all ordered compositions of the four fixed local reflections over373 existing source inputs, requiring sourced intermediate and output records. Reduce the resulting partial maps to source-qualified translations and retain role/context identity. The finite menu is4×4×373=5968 trials; no new center or coordinate is introduced."
}