- Mobile: defeat iOS momentum scroll when compensating history prepend
(overflow toggle + short rAF watchdog); disable history virtualization
and post-paint background prepends; preload Markdown renderer and use
plain-text Suspense fallback to avoid first-frame geometry shifts
- Desktop: stop double-compensating prepends on the virtualized list -
virtua shift owns the adjustment; remove sticky-anchor heuristics that
misfired as failed restores
- Sync: skip no-op store writes when messages/parts are unchanged
Bohdan Triapitsyn
d71aec54db