{
  "created": "2026-10-05T13:16:28.577098+00:00",
  "seed": 51005,
  "status": "reserved; not generated or measured",
  "fixtures": [
    {
      "family": "cloud",
      "n": 512,
      "shape": "jittered circle",
      "prime": 2,
      "degree": 1,
      "cocycles": true
    },
    {
      "family": "dense",
      "n": 128,
      "shape": "random planar",
      "prime": 101,
      "degree": 2,
      "cocycles": false
    },
    {
      "family": "dense",
      "n": 96,
      "shape": "random sphere",
      "prime": 3,
      "degree": 2,
      "cocycles": true
    },
    {
      "family": "sparse",
      "n": 4096,
      "shape": "permuted grid",
      "prime": 2,
      "degree": 1,
      "cocycles": false
    },
    {
      "family": "weighted",
      "n": 96,
      "shape": "permuted octahedra",
      "prime": 101,
      "degree": 2,
      "cocycles": true
    },
    {
      "family": "landmark",
      "n": 2048,
      "m": 128,
      "shape": "dyadic Linfinity",
      "prime": 2,
      "degree": 1,
      "cocycles": false
    }
  ],
  "recipe": "NumPy default_rng(seed + fixture index); jitter circle angles by uniform(-0.2,0.2) times 2pi/n; planar uniform(0,1); sphere standard normal then normalize; permuted sparse/weighted original pilot graphs by rng.permutation(n); landmark choice 16384 dyadic coordinates without replacement as pilot. Fields and grades unchanged; dense metrics rounded through Float32. Reserved for later acceptance, not development tuning."
}