addon-node-red VS node-red-contrib-homebridge-automation

It's usually enabled by default: https://addons.community/

Awesome. Have a look at Visual Studio Code Add-On, Node-Red, and Ad-Guard , you can do some really powerful stuff with these.

It is possible, and a few years ago seemed quite a trend (just going by /r/homeassistant spectating) - https://github.com/hassio-addons/addon-node-red - but I gather HA's own automation scripting has at least visualisation if not GUI programming now.

node-red-contrib-home-assistant-websocket is considered the canonical, it's the one built into the community Node-Red plugin. https://github.com/hassio-addons/addon-node-red

You could use Home Assistant, combined with the Octoprint integration and Node-Red addon.

For this I'm using Homebridge and node-red, details are here https://github.com/NorthernMan54/node-red-contrib-homebridge-automation/wiki/Automated-Lighting-Levels

And then..https://github.com/NorthernMan54/node-red-contrib-homebridge-automation

If you have basic programming skills, adding NodeRED on top of homebridge (via the NodeRED addon, node-red-contrib-homebridge-automation) will give you a lot more automation power and flexibility (and it'll probably be more reliable than Apple's Home automation). The only catch is that all devices being controlled/monitored have to be accessed via homebridge -- devices connected directly to homekit are inaccessible. (Of course, the opposite isn't true. Homekit can access all homekit-only and homebridge devices.)