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  "layers": 1,
  "interaction_radius": 4.0,
  "contributed_by": {
   "by": [
    "@dorakingx"
   ],
   "date": "2026-09-12",
   "method": "De-stacked from this entry's own bilayer layout by the map (site (i,j), slot c) -> (i+j, j-i+c), injective since a collision needs 2j = 2j'+1. Which qubit at a site takes slot 0 decides whether a check pair clears the radius cap, asymmetrically in the sign of the slot difference, so the choice is 2-SAT per site: implication graph and Tarjan SCC, clauses re-verified."
  }
 }
}