Many thanks for the reference, this looks like a really interesting device, and it has quite a lot of similarities with the type of system I'm working on (albeit in a completely different application domain).
Currently just starting with a very simple prototype, which is a very basic action scheduler for running analysis workflows. It will become more capable as more system functionality is wrapped and exposed. That ease of wrapping and sandboxing the Lua environment is one of the features I really like about Lua.