Calibrated from the maintainer's exploratory baseline on spec hardware
(Modal L40S, network-blocked sandbox): 706.1s train wall-clock, 58.91%
accuracy, 18,464,768 adapter params, integrity checks green. Target set
~2pts below observed for seed-variance headroom.

Track v1 is now frozen in full: model, data, eval protocol, hardware,
constraints, verification rules, target.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>