Calendars were listed in the order the server returns them, which for
Stalwart is creation order, and the sortOrder property was never read.
Follow the JMAP Calendars rule instead: lower sortOrder first, equal
sortOrder by name (case- and accent-insensitive, numbers by value). The
store keeps the list sorted, so the sidebar, the calendar pickers and the
settings all show the same order; each account's calendars stay together.
Calendar settings gain move up / move down buttons, visible on touch
screens too, and drag and drop for the user's own calendars. A move
renumbers that account's calendars 1, 2, 3... and writes sortOrder only
where it changes. The renumbering also covers the account's calendars the
settings list does not show (iCal subscriptions), so they keep their
place relative to the others. Shared calendars are not offered for
reordering, their order is the owner's.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
