"Refine this view" copied the discovered sources and folders when it
opened, so opening Filters before /gallery/subfolders answered left
Source and Folder at "All sources" / "All output folders" until the
dialog was reopened. On a slow CI runner this stalled the touch
"collection viewer follows filtered loaded order beyond mounted cards"
workflow in selectOption('0') until the 30s timeout.
openRefineDialog now returns setOptions(key, options); the Images page
calls it when discovery settles, and the open dialog refills Source and
its Folder list, showing the value it opened with (or the one chosen
since) once offered. It does nothing after the dialog closed or was
replaced.