debug: wrap Song init in try-except, log Public methods before any Song attempts

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

backend/spotify_resolve.py

@@ -64,25 +64,26 @@ def resolve(sp_type, sp_id):
     url = f'https://open.spotify.com/{sp_type}/{sp_id}'
 
     if sp_type == 'track':
-        # Song(url) stores url as the client object, then get_song_info() or init
-        # tries to call url.login which fails. Try: Song(url) + get_song_info(url),
-        # then Song(url) + get_song_info(), log methods as last resort.
-        song = sp_mod.Song(url)
-        song_methods = [m for m in dir(song) if not m.startswith('_')]
-        eprint(f'[spotapi] Song methods: {song_methods}')
+        # Log Public methods first so we always see them regardless of Song failures
+        pub = sp_mod.Public()
+        eprint(f'[spotapi] Public methods: {[m for m in dir(pub) if not m.startswith("_")]}')
         raw = None
-        for attempt in [
-            lambda: song.get_song_info(url),
-            lambda: song.get_song_info(),
-        ]:
+        # Try every plausible call pattern — Song requires a Login session, not a URL,
+        # so we also try Public directly in case it exposes track methods.
+        attempts = [
+            ('Public(url).get_song_info()',    lambda: sp_mod.Public(url).get_song_info()),
+            ('Public().get_song_info(url)',     lambda: sp_mod.Public().get_song_info(url)),
+            ('Song(url).get_song_info(url)',    lambda: sp_mod.Song(url).get_song_info(url)),
+            ('Song(url).get_song_info()',       lambda: sp_mod.Song(url).get_song_info()),
+        ]
+        for label, fn in attempts:
             try:
-                raw = attempt()
+                raw = fn()
+                eprint(f'[spotapi] track: {label} succeeded')
                 break
             except Exception as e:
-                eprint(f'[spotapi] track attempt failed: {type(e).__name__}: {e}')
+                eprint(f'[spotapi] track [{label}] failed: {type(e).__name__}: {e}')
         if raw is None:
-            pub = sp_mod.Public()
-            eprint(f'[spotapi] Public methods: {[m for m in dir(pub) if not m.startswith("_")]}')
             raise Exception('Song resolution: all attempts failed')
         eprint(f'[spotapi] track raw type={type(raw).__name__} keys={list(raw.keys()) if isinstance(raw, dict) else "?"}')
         if isinstance(raw, dict):