{
  "fixture_version": 1,
  "seed": 7,
  "seed_ids": [
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    13
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  "weights": {
    "sonic": 0.3,
    "popularity": 0.15,
    "style": 0.1,
    "genre": 0.15,
    "era": 0.05,
    "novelty": 0.1
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  "limit": 50,
  "artist_max": 3,
  "year_window": [
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  "repeats": 3,
  "python": "3.14.7",
  "numpy": "2.5.0",
  "sqlite": "3.53.4",
  "platform": "Linux",
  "machine": "aarch64",
  "cpu_count": 10,
  "worker_blas_threads": 1,
  "extra_indexes": true,
  "rss_source": "Linux VmHWM since exec",
  "listening_preference": "unmeasured",
  "methodology": "Fresh workers; preloaded float32 vectors; fixture/index/cache setup excluded. First query is not OS-cold. Warm queries use new sessions. RSS is process high-water including runtime/cache, before tracing. Traced peak is a separate untimed request and is not all native memory. Full uses exact streaming top-k; bounded is the original multi-source ORM reference with explicit ID ties.",
  "measurements": [
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}