- docs/bitbrain_gun_verdict.md: control vs bb_decay (decay SBC memory) vs a
provably-zero placebo, 30 runs/arm vs real DrussGT. Nothing separates
(bb_decay +3.3 dmg/run, p=0.71; round wins 97/210 vs 97/210, p=1.00); the
7-run shape does not replicate. TR_BITBRAIN_RANGE=0 is clamped to 1.0 deg
(bitbrain_gun.nim:207) so it is NOT a zero-shift placebo; TR_BITBRAIN_MIN_OBS
unreachable is used instead.
- tools/ab/ab_analyze.py: keep exact enumeration for C(n,na)<=20e6 (7v7), add
a seeded Monte-Carlo permutation test (1e6 draws, 0x5eed5eed) with its
standard error, a tie-corrected Mann-Whitney U cross-check, a minimum
detectable effect line, all-pairs comparisons, and a [bb] shift check.
- tools/ab/README.md: document the new analyzer output.
SirStone