The end-of-episode autoplay prompt only named the next episode; Plex shows
a visual preview, which is what non-readers navigate by. The prompt card now
paints the episode's 16:9 still edge-to-edge behind the text under a bottom
gradient scrim, falling back to the text-only card when no thumbnail can be
served (no thumb, or no client and no downloaded artwork). Unwatched stills
respect the hide-spoilers blur, and the lookup only runs while the prompt is
visible to keep the playback-path build cheap.
close#2166
edde746
2f2016fdbe