What was computed
Breeder plasma 16.06 MJ [T] (~3.8 kg TNT); magnets ~0.3 GJ br / ~12.3 GJ burner [D]; decay heat <=62 W/kg @1yr [T]; no meltdown path
Reproduce this
# Reproduce ENV-A3 against the frozen record pip install kronos-toolkit # github.com/KronosFE/kronos-toolkit python -c "from kronos_toolkit.verify import run_regression; run_regression()" # ENV-A3 is anchored in the 2026-08-27 freeze spine (verdict: reproduced).