The apply was a bare goroutine whose progress lived in a component
field discarded on navigation, with no cancel and no record of where
it stopped if the app quit while it was rewriting tags — beside a
registry that gives every other long-running operation exactly those
things.
`jobs.KindAutotagApply` now carries progress, a cancel wired to the
apply's context, and a terminal state that tells cancelled from
failed. `OnBeforeClose` returns false unconditionally today; it now
asks while a file-writing job is in flight.
Still not durable: quitting cancels cleanly but nothing records where
it stopped for the next launch. That belongs with the deferred
download/jobs work.
logan
952c25c3d3