Architect drift review: clean (two [low] items both expected
audit by-products, not drift). Bench-regression check: all
three exit-code gates green; the 5-metric
latency.explicit_at_rc / gc_over_bump improvement cluster from
audit-cma earlier today reappears, second consecutive audit
showing the same shift uncorrelated with milestone work —
baseline left pristine for one more audit before considering
ratification.
All seven spec acceptance criteria green. Milestone closed.
