revert: restore iTunes direct calls — remove broken backend proxy

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

backend/novasonic-server.js

@@ -483,48 +483,6 @@ function _spTrackItem(t, defaultAlbum, defaultArt, defaultAlbumArtist) {
   };
 }
 
-// ─── ITUNES PROXY ────────────────────────────────────────────────────────────
-// Browser origin is blocked by Apple (403). All iTunes/Apple RSS calls go through here.
-
-async function itunesProxy(url) {
-  return new Promise((resolve, reject) => {
-    https.get(url, res => {
-      let d = '';
-      res.on('data', c => d += c);
-      res.on('end', () => { try { resolve(JSON.parse(d)); } catch { resolve({}); } });
-    }).on('error', reject);
-  });
-}
-
-app.get('/api/itunes/search', async (req, res) => {
-  try {
-    const { term, entity = 'musicTrack', limit = 25, country = 'us' } = req.query;
-    if (!term) return res.json({ results: [] });
-    const url = `https://itunes.apple.com/search?term=${encodeURIComponent(term)}&media=music&entity=${entity}&limit=${limit}&country=${country}&explicit=Yes`;
-    const d = await itunesProxy(url);
-    res.json({ results: d.results || [] });
-  } catch { res.json({ results: [] }); }
-});
-
-app.get('/api/itunes/lookup', async (req, res) => {
-  try {
-    const { id, entity = 'song', limit = 200, country = 'us' } = req.query;
-    if (!id) return res.json({ results: [] });
-    const url = `https://itunes.apple.com/lookup?id=${id}&entity=${entity}&limit=${limit}&country=${country}&explicit=Yes`;
-    const d = await itunesProxy(url);
-    res.json({ results: d.results || [] });
-  } catch { res.json({ results: [] }); }
-});
-
-app.get('/api/itunes/charts', async (req, res) => {
-  try {
-    const { type = 'albums', country = 'de' } = req.query;
-    const url = `https://rss.applemarketingtools.com/api/v2/${country}/music/most-played/50/${type}.json`;
-    const d = await itunesProxy(url);
-    res.json(d.feed ? { results: d.feed.results || [] } : { results: [] });
-  } catch { res.json({ results: [] }); }
-});
-
 // ─── ROUTES ──────────────────────────────────────────────────────────────────
 
 app.post('/api/spotify/track-artwork', async (req, res) => {