Two silent stalls hit in LXC 132's first 24h of real traffic: rclone's own
--timeout didn't catch a protondrive-specific hang (transfer at 100%, zero
bytes/errors/retries for hours). Added a 5-min watchdog timer that restarts
rclone-backup.service if transferred bytes are frozen for 15+ min. Also
found and fixed a monitoring bug in the runner (wrong stats-group key) that
made a healthy sync look falsely stalled for 22h in its own log.
dtoro
6669feafdc