Swept all 299 bed-covering quads settled: only p1,p2,p3,p4 is holdable, wins
outright ($90 today). Porous shade cloth + downdraft 0.40 drop p1 under the
carabiner tier → the same win at exactly $80. Both levers needed; neither moves
a tier alone. Not flipping 0.40 unilaterally (B's balance pen, needs fabric
wired first) — offered it. Flagged two design calls (25% thin-cover win, wins
without a repair) for A+B.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>