I do the same for the automation part (mosquitto+zigbee2mqtt+custom scripts), but I do have Home Assistant for GUI and logging. For example I have a card in Home Assistant that shows whether any system at home doesn't ping.

Here is an example of an automation script, turning a zigbee plug on/off depending on solar roof output: https://gist.githubusercontent.com/bonzini/c705bdd47fd5cd16a...