Fuxino 6d54019a18 Save the last successful backup and add --last-backup ...

Write the completion time and backup directory to
$XDG_STATE_HOME/simple_backup/last_backup after each successful backup
(as the target user when run as root), for status bar reminders.
--last-backup prints it.

2026-10-25 12:36:00 +01:00

..

simple_backup.1

Save the last successful backup and add --last-backup

2026-10-25 12:36:00 +01:00