What was computed
GPU fleet: PINN vs FreeGS: RMS psi 0.139% (clears 1% target; prior 1.79%), GS-operator residual 0.32%, 2877x speedup
Reproduce this
# Reproduce KX-L1-A11 against the frozen record pip install kronos-toolkit # github.com/KronosFE/kronos-toolkit python -c "from kronos_toolkit.verify import run_regression; run_regression()" # KX-L1-A11 is anchored in the 2026-08-27 freeze spine (verdict: reproduced).