Jeroen's benchmark capture for the Atlas polish pass, saved in-repo
with the technique extraction (rivers-as-networks/taper, road-vs-river
color+straightness disambiguation, coast gradient, data-driven stipple,
labels) so the future Araminta-led pass has the source material.
Tickets: T-1175
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
