MS2620

Code looks fine and follows previous patterns, however at homeassistant/components/mobile_app/__init__.py you are using ```python carplay_config = config.get(DOMAIN, {}).get("carplay", {}) ``` when you could be using ```python carplay_config = config[DOMAIN]["carplay"] ```...

This is a solid and worthwhile addition — adding a trigger for the “returning to dock” state makes the vacuum integration more complete and useful. The changes are limited to...