Scanning goes back where libraries are managed -- the Jobs tab's own
comment said the per-library controls had been taken out of Settings to
build it. "Scan All" and "Full Rescan" join "Add Library", "Scan now"
joins the per-library overflow menu beside Rename and Remove, and a
library being scanned says so where its track count goes.
Each surface then gets the job rows for its own kind: scans under
Libraries, index and enrichment under Search Index, downloads under the
download clients, and the autotag apply in the Autotag view -- where
stopping a run matters most, since applying rewrites tags on disk and
that view had no cancel at all.
The autotag panel shares the header's grid row through a wrapper rather
than taking a third row: it is display:none while nothing is applying,
which is nearly always, and a grid row would still spend the
container's gap on it.
The Launch Page select is derived from `VIEW_META` instead of listing
its ten options, since removing a destination is exactly the change
that leaves two hand-written copies disagreeing.