Advanced-blanket TBR uplift (toward 4 kg-T/yr target)

Frozen result

What was computed

Advanced-blanket TBR uplift ceiling: A best solid-Be (ref) -> TBR 1.418 = 1.99 kg-T/yr/unit (from literal 0.29). ST centrepost caps coverage; PbLi vs solid-Be both explored. Fleet/2-units=4kg

Reproduce this

# Reproduce BR-L2-A7u against the frozen record
pip install kronos-toolkit   # github.com/KronosFE/kronos-toolkit
python -c "from kronos_toolkit.verify import run_regression; run_regression()"
# BR-L2-A7u is anchored in the 2026-08-27 freeze spine (verdict: reproduced).