Cairn now requires Android 14 or newer. Health Connect is part of the system
only from Android 14; below that it is a separate Google app from the Play
Store, which a Play-less device cannot install — so the app could not read
anything there.

Fixed: on a phone without Health Connect, Refresh and Sync now report it
instead of spinning forever. Nextcloud connection and sync errors are shown in
German in the German app. Sleep totals no longer count time you were awake, and
the per-stage breakdown no longer double-counts the same minutes.

New: a read-only Cairn app for Nextcloud, so you can view the same files in
your browser.
