My way to get things working (I wouldn't call this a "solution" as I don't
know the root cause) was to emit two consecutive "reshuffled" events when
changing tabs in the job details, and to recalculate the table height when
the job type (so not the job itself, but its type info) is loaded.
Add a "Last Rendered" view to the webapp.
The Manager now stores (in the database) which job was the last
recipient of a rendered image, and serves that to the appropriate
OpenAPI endpoint.
A new SocketIO subscription + accompanying room makes it possible for
the web interface to receive all rendered images (if they survive the
queue, which discards images when it gets too full).
It doesn't update automatically yet (still needs SocketIO notifications),
and there is no check yet for whether there is actually any last-rendered
image at all, but at least there is a component that shows the image.
