v3: fix the queue and re-resolve edge cases in native bandcamp playback

Re-resolving a stream is a network round-trip, and nothing checked that the
player still belonged to that item once it landed. Picking another dump —
or closing the player — while a resolve was in flight let the stale result
swap the queue back; from onError, which resolves with autoplay, it would
also start playing over whatever was chosen instead. A generation counter,
bumped by playQueue/advanceTo/stop, now drops any result that no longer owns
the player, with a separate counter owning the resolving flag so a
superseded resolve can't clear a newer one's spinner.

A track that stays dead after a re-resolve is one track, not one album: the
cooldown path now steps to the next entry and only falls back to the iframe
on the last one. A failed resolve still goes straight to the embed, since
that's an album-wide failure rather than a single bad URL. And a track that
has vanished from the release, or lost its streamable flag to Bandcamp's
free-play cap, no longer resumes track 1 at the dead track's offset — the
findIndex miss resets the offset instead of seeking past the end of another
track.

Clicking the playing row rewound it but never resumed: seekTo only moves
currentTime, so re-selecting a finished or paused track looked like a
no-op. It now resumes as well. Same idea in the compact rich-content card,
whose button advertises "Pause" while active but re-played on click — in
native mode that meant a fresh /api/bandcamp/tracks and a restart from
track 1. It pauses for streams now; embeds have no transport of their own
and keep restarting, as before.

playRichContent reports whether playback actually started, so a native-mode
Bandcamp page with no streams and no stored embedUrl — an artist root, a
/music index, a preorder — is no longer a dead click: the journal card
navigates to the dump as it used to, and the rich-content card opens the
source page.

Also: the tralbum fetch releases the response body on its two error paths.
The endpoint is unauthenticated, so random /track/<slug> URLs would leak a
connection per request while also defeating the cache.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01E56F55N7m5GGKKEwoYFJtH

src/components/JournalCard.tsx

@@ -43,6 +43,13 @@ export function JournalCard(
     navigate(dumpUrl(dump));
   }
 
+  // A playable card plays. If playback turns out to be impossible — a Bandcamp
+  // page with no streams and no embed to fall back to — the card must still do
+  // what an unplayable one does rather than swallowing the click.
+  async function handlePlayOrNavigate(rc: NonNullable<typeof playable>) {
+    if (!await playRichContent(rc, dumpUrl(dump))) handleNavigate();
+  }
+
   // Mirrors FilePreview (the hot/new feeds) so a video shows its generated
   // still here too, rather than degrading to a text card with a 🎬.
   const thumbnailUrl = dump.thumbnailMime
@@ -151,7 +158,7 @@ export function JournalCard(
       <li
         className={className}
         onClick={playable
-          ? () => void playRichContent(playable, dumpUrl(dump))
+          ? () => void handlePlayOrNavigate(playable)
           : handleNavigate}
       >
         <div className="journal-card-image">