feat: v1.12.0 — Lyrics, 15 new themes, Last.fm stable, Crossfade stable

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

src/api/lrclib.ts

@@ -0,0 +1,47 @@
+export interface LrclibLyrics {
+  syncedLyrics: string | null;
+  plainLyrics: string | null;
+}
+
+export interface LrcLine {
+  time: number; // seconds
+  text: string;
+}
+
+export async function fetchLyrics(
+  artist: string,
+  title: string,
+  album: string,
+  duration: number,
+): Promise<LrclibLyrics | null> {
+  const params = new URLSearchParams({
+    artist_name: artist,
+    track_name: title,
+    album_name: album,
+    duration: Math.round(duration).toString(),
+  });
+  try {
+    const res = await fetch(`https://lrclib.net/api/get?${params}`);
+    if (!res.ok) return null;
+    const data = await res.json();
+    return {
+      syncedLyrics: data.syncedLyrics ?? null,
+      plainLyrics: data.plainLyrics ?? null,
+    };
+  } catch {
+    return null;
+  }
+}
+
+export function parseLrc(lrc: string): LrcLine[] {
+  const lines: LrcLine[] = [];
+  for (const line of lrc.split('\n')) {
+    const match = line.match(/^\[(\d+):(\d+\.\d+)\](.*)/);
+    if (!match) continue;
+    const mins = parseInt(match[1], 10);
+    const secs = parseFloat(match[2]);
+    const text = match[3].trim();
+    lines.push({ time: mins * 60 + secs, text });
+  }
+  return lines.sort((a, b) => a.time - b.time);
+}