library: file a record you don't own off the payload's own field names

The gap cards were reading `nb_tracks` and `date`, which are the shapes the
prototype's generated collection.json used, not the ones CatalogAlbum
actually carries — `track_count` and `release_date`. The year chip survived
on a fallback; the track count reached the classifier as undefined, so the
floor under it had nothing to weigh and every gap card leaned entirely on
Deezer's record_type.

They also now pass `is_live` and `is_soundtrack` through. Deezer has no
record type for either, and the backend sets those flags from the tracklist
and the Films/Games genre precisely so a live album that omits "Live" from
its title can still be recognised — the artist page reads them, and there
is no reason the same record filed on this page should not.

src/views/Library.svelte

@@ -988,10 +988,23 @@
 {/snippet}
 
 {#snippet gapCard(r)}
+    <!-- A record you do NOT own, at full size and dimmed. It is filed by the
+         same classifier as everything else, off the CatalogAlbum payload's own
+         fields (`record_type`/`track_count`/`release_date`, plus the is_live and
+         is_soundtrack flags Deezer has no record type for) — "other" means the
+         classifier had nothing to go on, so it is left unsaid rather than
+         printed under every card. -->
+    {@const cat = fileRelease({
+        title: r.title,
+        record_type: r.record_type,
+        track_count: r.track_count,
+        is_live: r.is_live,
+        is_soundtrack: r.is_soundtrack,
+    })}
     <div class="release gap" role="listitem" title={`${r.title} — not in your library`}>
         <div class="cover-wrap">
-            {#if r.date?.slice(0, 4) || r.release_date?.slice(0, 4)}
-                <span class="ed-badge">{(r.release_date ?? r.date).slice(0, 4)}</span>
+            {#if r.release_date?.slice(0, 4)}
+                <span class="ed-badge">{r.release_date.slice(0, 4)}</span>
             {/if}
             {#if r.cover}
                 <img class="cover" src={r.cover} alt="" loading="lazy" draggable="false" />
@@ -1000,11 +1013,7 @@
             {/if}
         </div>
         <div class="title" title={r.title}>{r.title}</div>
-        <div class="sub">
-            {#if fileRelease({ title: r.title, record_type: r.record_type, track_count: r.nb_tracks }) !== "other"}
-                {CAT_ONE[fileRelease({ title: r.title, record_type: r.record_type, track_count: r.nb_tracks })]}
-            {/if}
-        </div>
+        <div class="sub">{cat === "other" ? "" : CAT_ONE[cat]}</div>
     </div>
 {/snippet}