fix(reader): clean chapter title display and declutter audio panel

- Strip leading digit prefix (e.g. "6Chapter 6 → Chapter 6") and
  content after first newline (scraped date artifacts) from chapter titles
- Add "CHAPTER N" eyebrow label above the h1 for clear hierarchy
- Show date_label as small muted text in the meta row
- Remove double-border / mt-6 gap from standard AudioPlayer inside the
  chapter page's collapsible panel (was rendering two nested boxes)
- Remove redundant "Audio Narration" label (toggle already says "Listen")

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ui/src/lib/components/AudioPlayer.svelte

@@ -1024,15 +1024,8 @@
 </div>
 {:else}
 <!-- ── Standard player ─────────────────────────────────────────────────────── -->
-<div class="mt-6 p-4 rounded-lg bg-(--color-surface-2) border border-(--color-border)">
+<div class="p-4">
-	<div class="flex items-center justify-between gap-2 mb-3">
+	<div class="flex items-center justify-end gap-2 mb-3">
-		<div class="flex items-center gap-2">
-			<svg class="w-4 h-4 text-(--color-brand)" fill="currentColor" viewBox="0 0 24 24">
-				<path d="M12 3v10.55A4 4 0 1014 17V7h4V3h-6z"/>
-			</svg>
-			<span class="text-sm text-(--color-text) font-medium">{m.reader_audio_narration()}</span>
-		</div>
-
 		<!-- Voice selector button -->
 		{#if voices.length > 0}
 			<Button

ui/src/routes/books/[slug]/chapters/[n]/+page.svelte

@@ -287,6 +287,15 @@
 		html ? (html.replace(/<[^>]*>/g, '').match(/\S+/g)?.length ?? 0) : 0
 	);
 
+	// Strip scraper artifacts from chapter titles:
+	//  - Leading digit(s) prefixed before "Chapter" (e.g. "6Chapter 6 : ...")
+	//  - Everything after the first newline (often includes a scraped date)
+	const cleanTitle = $derived.by(() => {
+		let t = (data.chapter.title || '').split('\n')[0].trim();
+		t = t.replace(/^\d+(?=Chapter)/i, '').trim();
+		return t || `Chapter ${data.chapter.number}`;
+	});
+
 	// Audio panel: auto-open if this chapter is already loaded/playing in the store
 	// svelte-ignore state_referenced_locally
 	let audioExpanded = $state(
@@ -301,7 +310,7 @@
 </script>
 
 <svelte:head>
-	<title>{data.chapter.title || m.reader_chapter_n({ n: String(data.chapter.number) })} — {data.book.title} — libnovel</title>
+	<title>{cleanTitle} — {data.book.title} — libnovel</title>
 </svelte:head>
 
 <!-- Reading progress bar (scroll mode, fixed at top of viewport) -->
@@ -364,8 +373,11 @@
 
 <!-- Chapter heading + meta + language switcher -->
 <div class="mb-6">
+	<p class="text-xs font-semibold text-(--color-brand) uppercase tracking-widest mb-1.5">
+		{m.reader_chapter_n({ n: String(data.chapter.number) })}
+	</p>
 	<h1 class="text-xl font-bold text-(--color-text) leading-snug">
-		{data.chapter.title || m.reader_chapter_n({ n: String(data.chapter.number) })}
+		{cleanTitle}
 	</h1>
 	<div class="flex items-center flex-wrap gap-x-3 gap-y-1.5 mt-2">
 		{#if wordCount > 0}
@@ -375,6 +387,9 @@
 				~{Math.max(1, Math.round(wordCount / 200))} min
 			</p>
 		{/if}
+		{#if data.chapter.date_label}
+			<span class="text-(--color-muted) text-xs opacity-60">{data.chapter.date_label}</span>
+		{/if}
 
 		<!-- Language switcher (inline, compact) -->
 		{#if !data.isPreview}
@@ -483,7 +498,7 @@
 						<AudioPlayer
 							slug={data.book.slug}
 							chapter={data.chapter.number}
-							chapterTitle={data.chapter.title || m.reader_chapter_n({ n: String(data.chapter.number) })}
+							chapterTitle={cleanTitle}
 							bookTitle={data.book.title}
 							cover={data.book.cover}
 							nextChapter={data.next}