Add debug logging for podcast iframe creation

src/app.py

@@ -679,8 +679,10 @@ def play_next_segment():
         
         # Create YouTube player for podcast if available
         # Modal proxy returns "youtube_api" as source, so check both
+        print(f"🔍 Podcast debug: source={podcast.get('source')}, youtube_id={podcast.get('youtube_id')}, url={podcast.get('url', '')[:50]}")
         if podcast.get("source") in ["youtube", "youtube_api"] and podcast.get("youtube_id"):
             youtube_id = podcast.get("youtube_id", "")
+            print(f"✅ Creating podcast iframe with youtube_id: {youtube_id}")
             
             # # COMMENTED OUT: Delayed loading mechanism
             # # Get host audio duration to calculate delay
@@ -728,7 +730,9 @@ def play_next_segment():
                 podcast.get('url', '#')
             )
             print(f"✅ Podcast YouTube player created immediately: {podcast.get('title', 'Unknown')} (ID: {youtube_id})")
+            print(f"📦 Podcast iframe HTML length: {len(music_player_html)} chars, contains iframe: {'<iframe' in music_player_html}")
         elif podcast.get("url") and "youtube" in podcast.get("url", ""):
+            print(f"⚠️ Podcast: using fallback URL extraction")
             # Fallback: extract YouTube ID from URL and create simple embed
             url = podcast.get("url", "")
             youtube_id = ""