Prioritize WebM video over OGG audio for full quality

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

backend/app/openings_downloader/services/animethemes.py

@@ -181,19 +181,19 @@ class AnimeThemesService:
             theme_type = ThemeType.OP if match.group(1) == "OP" else ThemeType.ED
             sequence = int(match.group(2)) if match.group(2) else 1
 
-            # Get video URL (prioritize audio link, then video link)
+            # Get video URL (prioritize video link for full quality)
             video_url = None
             entries = theme_data.get("animethemeentries", [])
             if entries:
                 videos = entries[0].get("videos", [])
                 if videos:
-                    # Try to get audio link first
+                    # Get video link (WebM)
+                    video_url = videos[0].get("link")
+                    # Fallback to audio link if no video
+                    if not video_url:
                         audio = videos[0].get("audio")
                         if audio:
                             video_url = audio.get("link")
-                    # Fallback to video link
-                    if not video_url:
-                        video_url = videos[0].get("link")
 
             # Get song info
             song_data = theme_data.get("song", {})