Video cards show a resume progress bar for started-but-unfinished videos and a
hover overlay: Play on every card, Continue + Restart on in-progress ones. The
in-app player now resumes from (and checkpoints to) the server position instead
of localStorage, accepts an explicit startAt (Restart -> 0), and refreshes the
feed on close so the card bar reflects the session. Sidebar gains an
'In progress' show filter.
peter
04c971f623