Show that DeadAir is still working on an episode (#176)

A new download in a show with DeadAir on plays at full length until its
copy is made, and nothing said so. Each file now carries
deadair_pending while DeadAir is on for its show and the copy is still
to come (not for one heard through, which it passes over), and the
episode's line and details say "Cutting dead air…". The maker sends a
deadair_done event when it finishes a file, and the page takes the list
again, so the line becomes how much shorter the episode is without a
reload.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/src/util.ts

@@ -60,6 +60,9 @@ const EQ='<span class="eq" aria-hidden="true"><i></i><i></i><i></i></span>';
 // The page's own buttons name their icon; this draws it in, ahead of any label they carry.
 for(const b of $$('[data-icon]')) b.insertAdjacentHTML('afterbegin',ICON[b.dataset.icon]);
 
+/// An episode whose DeadAir copy is still being made: it plays as it is until then, and the line
+/// becomes how much shorter it is once the copy is ready (the dead_air event).
+const DEAD_PENDING='<span class="dapend" title="DeadAir is still working on this episode. Until it is done, it plays at its full length.">Cutting dead air…</span>';
 /// What DeadAir took off an episode, as the list says it.
 function shorter(secs){ return secs<60?`${secs} s shorter`:`${Math.round(secs/60)} min shorter`; }
 /// A total of time saved: "3 h 12 min", "12 min", "40 s".