A folder that isn't there (moved whole, or on a disk that isn't
connected) used to scan as "every photo missing", one tick away from
moving a whole disk to Recently Deleted. The scan (on its worker, so an
asleep share never stalls the UI) now reports it as offline and both
commands refuse it; the dialog says so. A whole disk or a folder holding
disks needs `disk: true`, as Remove Disk from Library does; the disk rows
pass it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>