Milestone fieldtest for "Real-project readiness — role-complete
research loop (no freeze)": a from-scratch ger40-lab project (aura new)
with a brand-new native node (ger40_lab::Momentum) driven through the
full research loop on real GER40/FRA40 archive data — sweep,
walk-forward, mc, process+campaign with 2-regime risk and net-R cost
block, cross-instrument generalize, bit-identical reproduce, charts —
from the public interface only. Spine holds: 5 working, 1 bug (chart
cannot open a sweep --trace family by its printed handle), 4 friction,
1 spec gap. Findings triaged separately.
