A fresh detail-page load while downloads were active rendered the
NON-polling episode container (PollingEpisodeList was only reachable
via the /episodes partial route after Refresh), so the page froze
until the user refreshed manually. PodcastDetailPage now picks the
variant the same way the route does — HasActiveDownloads selects the
every-2s poll container.
Also: the indeterminate progress bar (feeds without Content-Length,
e.g. Scribl) used animate-pulse, which fades in place and reads as
frozen; replaced with a sliding shimmer keyframe
(.podcast-progress-indeterminate, 33% sliver, translating -100% ->
300%) in input.css. The live MB counter stays.
§0 item 1.