Fix 403 on followed Spotify playlists: fallback to public embed scraper

When fetching tracks from a followed playlist returns 403 (owner made it
private or API scope insufficient), fall back to the public embed scraper
which doesn't need API auth. Tracks still load with basic metadata.

web_server.py

@@ -26434,7 +26434,42 @@ def get_playlist_tracks(playlist_id):
 
         # Fetch all tracks with full album data
         tracks = []
-        results = spotify_client._get_playlist_items_page(playlist_id, limit=100)
+        try:
+            results = spotify_client._get_playlist_items_page(playlist_id, limit=100)
+        except Exception as items_err:
+            # 403 on followed playlists — try the public embed scraper as fallback
+            logger.warning(f"Playlist items fetch failed ({items_err}), trying public embed scraper")
+            try:
+                from core.spotify_public_scraper import scrape_spotify_embed
+                embed_data = scrape_spotify_embed('playlist', playlist_id)
+                if embed_data and not embed_data.get('error') and embed_data.get('tracks'):
+                    for t in embed_data['tracks']:
+                        artists = t.get('artists', [])
+                        tracks.append({
+                            'id': t.get('id', ''),
+                            'name': t.get('name', ''),
+                            'artists': artists if artists else [{'name': 'Unknown'}],
+                            'album': {'name': '', 'images': []},
+                            'duration_ms': t.get('duration_ms', 0),
+                            'popularity': 0,
+                            'spotify_track_id': t.get('id', '')
+                        })
+                    playlist_dict = {
+                        'id': playlist_data['id'],
+                        'name': playlist_data['name'],
+                        'description': playlist_data.get('description', ''),
+                        'owner': playlist_data['owner']['display_name'],
+                        'public': playlist_data.get('public', False),
+                        'collaborative': playlist_data.get('collaborative', False),
+                        'track_count': len(tracks),
+                        'image_url': playlist_data['images'][0]['url'] if playlist_data.get('images') else None,
+                        'snapshot_id': playlist_data.get('snapshot_id', ''),
+                        'tracks': tracks
+                    }
+                    return jsonify(playlist_dict)
+            except Exception as scrape_err:
+                logger.warning(f"Public embed scraper also failed: {scrape_err}")
+            raise items_err  # Re-raise original error if both failed
 
         while results:
             for item in results['items']: