DisplayDriver gains slideBegin()/slideCompose(): the driver keeps the frame
on screen and, in the next one, moves it out while the new rows follow.
SH1106 does it on its 1 KB buffer (+1 KB RAM for the copy), the sim on its
canvas; drivers that can't read their frame back keep cutting over (e-ink).
Home slides the content below the page-icon row in 220 ms with an ease-out
(the whole screen to and from the header-less clock), and the current-page
pill glides between icons.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
JakubandClaude Opus 5.5
061e5ba36b