Jobs: calmer cards, no more filter jumping

Two fixes on the jobs board, both from member feedback:

Calmer cards. Each job card now leads with the decision: title, company, and compensation together at full weight. Everything else -- job type, location, where we found it, and the closest Career Map role -- sits in one quiet line underneath. Nothing important gets cut off mid-sentence anymore, and the secondary text got a contrast bump while we were in there.

No more jumping. Toggling any filter used to bounce you to the top of the page and back. Now the page settles exactly where it should: at the top of your freshly filtered results.