feat: artist in filename, hide album=title subtitle, remove title hover

Naming convention (download + edit-metadata):
  Before: {01 - }Title.ext
  After:  {01 - }Artist1, Artist2 - Title.ext
- ytdlp.js: builds fileBase with artist prefix; findExistingTrack checks
  both new and old format so existing files aren't re-downloaded
- metadata.js: findExistingTrack accepts optional safeArtist param
- novasonic-server.js: file rename on title edit now includes artist
  (falls back to Navidrome's stored artist if not provided in body)

Song list subtitle: hide album name when album === title (singles where
the album is named after the track appear to duplicate the title)

Player bar: removed .player-title:hover underline/colour effect

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

backend/lib/metadata.js

@@ -47,9 +47,12 @@ async function downloadArtwork(url, dir) {
 
 const AUDIO_EXTS = ['mp3', 'flac', 'opus', 'm4a', 'ogg', 'wav'];
 
-function findExistingTrack(dir, trackPrefix, safeTitle) {
-  return AUDIO_EXTS
-    .map(ext => path.join(dir, `${trackPrefix}${safeTitle}.${ext}`))
+function findExistingTrack(dir, trackPrefix, safeTitle, safeArtist) {
+  // Check new format "{prefix}{artist} - {title}.ext" first, then old format "{prefix}{title}.ext"
+  const names = safeArtist
+    ? [`${trackPrefix}${safeArtist} - ${safeTitle}`, `${trackPrefix}${safeTitle}`]
+    : [`${trackPrefix}${safeTitle}`];
+  return AUDIO_EXTS.flatMap(ext => names.map(n => path.join(dir, `${n}.${ext}`)))
     .find(f => fs.existsSync(f)) || null;
 }
 

backend/lib/ytdlp.js

@@ -54,16 +54,20 @@ async function downloadTrack({ jobId, artist, albumArtist, title, album, year, t
   const dir = path.join(outputDir || CONFIG.musicPath, safeArtist, safeAlbum);
   fs.mkdirSync(dir, { recursive: true });
 
-  const safeTitle   = sanitize(title);
-  const trackPrefix = trackNum ? String(trackNum).padStart(2, '0') + ' - ' : '';
+  const safeTitle        = sanitize(title);
+  const trackPrefix      = trackNum ? String(trackNum).padStart(2, '0') + ' - ' : '';
+  // Filename format: "{01 - }Artist1, Artist2 - Title.ext"
+  // Use track artist (not albumArtist) so all credited artists appear in the filename
+  const safeArtistForFile = sanitize(artist.replace(/;/g, ','));
+  const fileBase          = `${trackPrefix}${safeArtistForFile} - ${safeTitle}`;
 
-  const existing = findExistingTrack(dir, trackPrefix, safeTitle);
+  const existing = findExistingTrack(dir, trackPrefix, safeTitle, safeArtistForFile);
   if (existing) {
     log(jobId, `⏭ Bereits vorhanden: ${path.basename(existing)} — übersprungen`);
     return { success: true, dir, skipped: true };
   }
 
-  const outputTemplate = path.join(dir, `${trackPrefix}${safeTitle}.%(ext)s`);
+  const outputTemplate = path.join(dir, `${fileBase}.%(ext)s`);
   // Strip only Unicode symbol chars (☆ ★ ♥ etc.) for ytsearch — YouTube search chokes on them
   // and returns 0 results. Keep ASCII punctuation (!&-) so e.g. "N!GHT" stays "N!GHT" rather
   // than collapsing to "NGHT" which YouTube misreads as the word "night".
@@ -106,7 +110,7 @@ async function downloadTrack({ jobId, artist, albumArtist, title, album, year, t
   // Use original artist name (with special chars) for YTM URL — better search ranking than stripped version
   const ytmQuery = `${mainArtist} - ${title}`;
   const ytmUrl = `https://music.youtube.com/search?q=${encodeURIComponent(ytmQuery)}&params=${YTM_SONGS_PARAM}`;
-  const expectedAudio = path.join(dir, `${trackPrefix}${safeTitle}.${CONFIG.audioFmt}`);
+  const expectedAudio = path.join(dir, `${fileBase}.${CONFIG.audioFmt}`);
   const hasAudio = () => fs.existsSync(expectedAudio);
 
   // Direct URL download (e.g. SoundCloud) — skip the ytsearch cascade entirely

backend/novasonic-server.js

@@ -604,7 +604,8 @@ app.post('/api/edit-metadata', async (req, res) => {
     const ndApi  = `${ndUrl}/rest/getSong?id=${songId}&u=${encodeURIComponent(user)}&t=${token}&s=${salt}&v=1.16.1&c=novasonic&f=json`;
     const ndRes  = await fetch(ndApi, { signal: AbortSignal.timeout(8000) });
     const ndData = await ndRes.json();
-    filePath = ndData?.['subsonic-response']?.song?.path;
+    const ndSong = ndData?.['subsonic-response']?.song;
+    filePath = ndSong?.path;
     if (!filePath) return res.status(404).json({ error: 'Song not found in Navidrome' });
   } catch (e) {
     return res.status(502).json({ error: `Navidrome lookup failed: ${e.message}` });
@@ -687,12 +688,14 @@ app.post('/api/edit-metadata', async (req, res) => {
     // ── Post-save: rename file and/or move to correct artist/album folder ──
     let currentFile = filePath;
 
-    // 1. Rename file if title changed — convention: {01 - }?{sanitized title}.ext
+    // 1. Rename file if title changed — convention: {01 - }?{Artist} - {Title}.ext
     if (title) {
-      const safeTitle  = sanitize(title);
-      const prefix     = trackNum ? String(trackNum).padStart(2, '0') + ' - ' : '';
-      const newName    = `${prefix}${safeTitle}${fileExt}`;
-      const newPath    = path.join(path.dirname(currentFile), newName);
+      const safeTitle      = sanitize(title);
+      const fileArtist     = (artist || ndSong?.artist || '').replace(/;/g, ',');
+      const safeArtistPart = fileArtist ? sanitize(fileArtist) + ' - ' : '';
+      const prefix         = trackNum ? String(trackNum).padStart(2, '0') + ' - ' : '';
+      const newName        = `${prefix}${safeArtistPart}${safeTitle}${fileExt}`;
+      const newPath        = path.join(path.dirname(currentFile), newName);
       if (newPath !== currentFile && !fs.existsSync(newPath)) {
         try { fs.renameSync(currentFile, newPath); currentFile = newPath; }
         catch (e) { console.error('[edit-metadata] file rename:', e.message); }