{
  "_comment": "SPEC.md §24.6.2 seeded-stochastic reference vector, frozen at v0.8.8. seed-replay.test.mjs digests draw_count xoshiro256** draws (splitmix64 seed expansion) through the canonical §4 hash path and asserts the result equals expected_digest. tampered_seed is the NEGATIVE fixture: the same generator at that seed MUST NOT reproduce expected_digest, which is what proves the seed is load-bearing rather than a decorative receipt field. Do not regenerate expected_digest to make a red gate green — a change here means replay drift, which is the defect the gate exists to catch.",
  "reference_vector": {
    "prng_algorithm": "xoshiro256**",
    "seed": 424242,
    "draw_count": 256,
    "tampered_seed": 424243,
    "expected_digest": "539dac3d4a0458bee3c0b9f13aab35c32a63da024f710ff1c7b5d5a7765a060f"
  }
}