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 "provenance": {
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  "construction": "arXiv:2406.19151 SM Table 2: Z_8xZ_9, A=[('x', 3), ('y', 7)], B=[('x', 1), ('y', 5)]",
  "references": [
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  "date": "2026-08-15",
  "notes": "Reconstructed from arXiv:2406.19151 SM Table 2 via the R3 monomial reduction (z = x*y) then bb.build_bb; monomial pairs in the construction string. Distance is a kit-witnessed upper bound; literature novelty UNVERIFIED. LAYOUT added 2026-08-20: a 2-layer planar layout with measured interaction radius 5.0990 (integer-grid sites, min site spacing 1.0, at most 2 qubits per site), placing the code in the local-2d-bilayer class with geometric efficiency g = 0.0030. Layout credit and method are recorded in locality.contributed_by; the code, its distance claims, and its authorship are unchanged. Part of the layout-filling effort (issue #654 discussion).",
  "model": "DeepSeek V4 Flash 0731",
  "origin": "submission",
  "novelty": "unknown"
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