Yeah there is very little thought in resilience in most such systems. Ideally I'd see some generic rule-based system (maybe just WASM VM fed with some code and

Yeah there is very little thought in resilience in most such systems. Ideally I'd see some generic rule-based system (maybe just WASM VM fed with some code and triggers?) that does just that - feeds code some data and pushes output to controllers, maybe with standarized methods to ask for historical/other sensor data, then have that just be a blob you can deploy on few devices, share a password and it would pick a master and keep rest in standby. Then just have HA-like Web UI for configuration so the big fat of UI can run really wherever on anything, but the core that is needed for everything to actually work can sit on some cheap device in the closet.