Device log showed the slide motion itself is now clean 60fps (frames 0-15 all ~16ms in every
sample); the only remaining spike was at frame ~16 — AFTER the slide lands — from applying the
network thread result + pin at that instant (the "adjusts after it lands" feel). Since the open
is a compositor opacity/transform fade, main-thread work during it doesn't stall the animation
and is masked by the low opacity. So apply the reconcile/render + pins immediately when the
fetch returns (mid-fade) instead of deferring to slide-end. By the time the pane is fully opaque
the content is already settled. Removed the now-obsolete appendBubble mid-slide deferral.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Sravan
2a60c01268