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 "provenance": {
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  "construction": "SAT search (local_sat, n_side=7, G=16, max_weight=6, t=2 detection, radius 2.0, shared_t3) over 2D-local CSS codes on a 7x7 grid; found a weight-6 code with k=17, d>=3.",
  "origin": "submission",
  "date": "2026-09-18",
  "model": "DeepSeek V4 Flash 0731",
  "notes": "Checked against the current board: the trusted gate's dedup found no exact duplicate and no WL-equivalent existing entry; this is a new SAT-found code, not equivalent to a prior submission."
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