refactor: Improve code readability and structure across TTS modules

app/services/playlist.py

@@ -244,7 +244,10 @@ class PlaylistService:
         if was_current:
             main_playlist = await self.get_main_playlist()
             await self.playlist_repo.update(main_playlist, {"is_current": True})
-            logger.info("Set main playlist as current after deleting current playlist %s", playlist_id)
+            logger.info(
+                "Set main playlist as current after deleting current playlist %s",
+                playlist_id,
+            )
 
             # Reload player to reflect the change
             await _reload_player_playlist()
@@ -562,7 +565,11 @@ class PlaylistService:
             await self.session.delete(playlist_sound)
 
         await self.session.commit()
-        logger.info("Deleted %d playlist_sound records for playlist %s", len(playlist_sounds), playlist_id)
+        logger.info(
+            "Deleted %d playlist_sound records for playlist %s",
+            len(playlist_sounds),
+            playlist_id,
+        )
 
     async def _unset_current_playlist(self) -> None:
         """Unset any current playlist globally."""