- RadioBot.join() accepts system_name parameter - Sets bot activity to ActivityType.listening → system name on connect - Clears presence (activity=None) on leave - main.py passes system_name from MQTT payload to radio_bot.join()
- RadioBot.join() accepts system_name parameter - Sets bot activity to ActivityType.listening → system name on connect - Clears presence (activity=None) on leave - main.py passes system_name from MQTT payload to radio_bot.join()