Answers the port's ask: ptbtneff01 is ANIMATED while a button is focused, not
drawn once and held. The existing page said 'the ring SPINS' from one frame at a
large angle, which is equally consistent with a static draw at a fixed angle.
No angle is quoted anywhere. The 360-bin angular estimator written for this
FAILED its own control -- a synthetic 30 deg came back as 0 deg (peak 0.596)
while 90/180/270 came back exactly -- so it was not used. What settles it needs
no angle: total annulus brightness is conserved to 0.4 % while individual
angular bins swing by 24, i.e. brightness moving AROUND the ring, which excludes
a pulse. The temporal-std map is a clean annulus, falling to ~1 both inside and
outside the stroke, which excludes positional jitter.
Period from the profile's autocorrelation: eight evenly spaced peaks, mean
2.177 s over nine revolutions. Even spacing is the internal check a drifting
instrument cannot pass. That is 120 units = 60 frames = 2.00 s at a true 30 Hz.
Also measured, same run: the ring is the ONLY moving thing on the settled main
menu -- temporal std is exactly 0.000 on every unfocused button, the labels and
the footer. And the ring's centre, located from the std map at game
(520.7, 339.7), matches the declared leaf offset's prediction of (521, 340).
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KNR5Y79D1T4bBr6gJQaWFP
4fa3099249