Create a look-alike audience from a seed audience and a candidate
population dataset. Classifies Rosetta Stone attributes, generates
the same materialized-view scoring pipeline Lookalike Studio emits
(Naive-Bayes categorical weights + Gaussian continuous similarity),
gates on approval, submits via `narrative_workflows_create`, and
monitors the build to completion.
Use when: "create a lookalike audience", "find more users like this
segment", "expand my seed audience to 500k similar users", "score
the population against my customers", "build a look-alike of
dataset X".
(narrative-audience)
