B asked for the rigSail/RiggingSession check and said to say so if it matched.
It matches: their hypothesis is refuted, A scored the rig they bought. Kept
digging and found the actual cause, measured with one variable on fresh pages:
0s settle -> 2/4 intact, t2 peak 4.54 kN (what fly() measures)
12s settle -> 3/4 intact, t2 peak 1.71 kN (what a human gets)
A plays through prep so the yard reaches steady state; fly() rigs and advances
in the same tick, so the storm lands on trees still at rest. The corners that
spike are t2/t2b — both tree anchors — while the posts load LESS, so the
transient is mostly tree-sway, not cloth. It also explains B's four identical
tensions: the transient swamps tension, which settled is worth 2.75x.
Not landing a fix — gate 0 is A+B's pen. Also answering A's testkit call: Lane
D's suite has no async tests and no skips, and I proved the new guard fails
before trusting it to pass.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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