param_space() knobs (name : kind):
  sma_cross.fast.length : I64
  sma_cross.slow.length : I64
  exposure.scale : F64

named-bound run — recorded rows: 12
  ts=             0 exposure=+0.0000
  ts=   60000000000 exposure=+0.0000
  ts=  120000000000 exposure=+0.0000
  ts=  180000000000 exposure=+0.0000
  ts=  240000000000 exposure=+4.0000
  ts=  300000000000 exposure=+11.5000
  ts=  360000000000 exposure=+3.5000
  ts=  420000000000 exposure=-2.5000
  ts=  480000000000 exposure=+0.5000
  ts=  540000000000 exposure=+4.5000
  ts=  600000000000 exposure=-2.5000
  ts=  660000000000 exposure=-6.5000

OK: param-space uniform <node>.<param>, named bind ran, deterministic.
