The port asked for the composition rule and declined to guess it, which was the
right call. Delivered on the page they read: draw the leaf on its own timeline,
do not multiply the parent s alpha in, with the refutation stated -- multiplying
predicts zero at the observed time and the sweeps would be invisible.
Keeps the two limits that matter to a consumer. It is not a universal precedence
rule: here the parent is a container with no sprite, while for a button the leaf
duplicates the parent and the parent wins, so the discriminator is which record
carries the geometry. And because every observation has parent alpha zero, leaf
wins is not separated from parent ignored because it draws nothing.
Also flags their title_jp ptlogo_eff2 lead as untested by me, with the reason it
is worth checking: if its two-element leaf carries the geometry the same way, the
125 percent scale may be the parent s.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QsEPXWVaEpyfudtR6re1Pd
14a7897c8f