Add debug logging for play_media troubleshooting

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

custom_components/emby_player/api.py

@@ -230,6 +230,13 @@ class EmbyApiClient:
         if start_position_ticks > 0:
             params["StartPositionTicks"] = start_position_ticks
 
+        _LOGGER.debug(
+            "Sending play_media: endpoint=%s, session_id=%s, item_ids=%s, command=%s",
+            endpoint,
+            session_id,
+            item_ids,
+            play_command,
+        )
         await self._post(endpoint, params=params)
 
     async def _playback_command(self, session_id: str, command: str) -> None: