Two things made a swipe between months feel rough, both from the grid and the
pane disagreeing about what was happening.
The grid sized itself to its month, 4 to 6 rows, so every swipe shunted the pane
up or down by a row while the grid content swapped underneath with no transition
at all. It now always reserves six rows, padding a short month with blank ones —
which both holds the pane still and makes the paged style's directional slide
safe to use here, since there is no longer a height change to animate under it.
The pane also flashed "Nothing scheduled" mid-page. Paging moves the selection
to the new month before that month's events have arrived, and the pane was
handed `instancesByDay[selected].orEmpty()` — so a day that simply wasn't loaded
yet was indistinguishable from a day with nothing on it, and got reported as
free. It now takes a nullable list and shows skeleton rows for the gap, saying
"still looking" rather than making a claim about the day.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Jean-Luc Makiola
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