Audiobooks: Newly added shelf, New badges, library filters and sorting, narrator and length details

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

public/style.css

@@ -1215,3 +1215,5 @@ body.qdock #view { padding-right: 340px; }
 @keyframes askpulse { 50% { box-shadow: 0 4px 22px rgba(217,69,58,.85); } }
 @media (prefers-reduced-motion: reduce) { #askpill { animation: none; } }
 body:has(#sheet) #askpill { display: none; }
+.abnew { position: absolute; top: 6px; left: 6px; font-style: normal; font-size: 11px; font-weight: 700; padding: 2px 7px; border-radius: 99px; background: var(--accent); color: #fff; }
+.abf.on { background: var(--accent); color: #fff; border-color: var(--accent); }