I love the idea of using a shared event log for coordination. Smart!
I have a Symphony-style[1] factory, which keeps all the context in a single session, but I want to start splitting into stations with separate sessions, and I hadn’t worked out how to do communication between sessions.
Personally, I’ve had "maintenance" and "auditing" sessions successfully drop notes in a my loop’s "inbox" directory (even though it was intended for my use).
I’d say that works as a simple initial approach. Second step is clarifying the "return address" and protocol, but what’s nice is that the message can actually contain those, meaning the protocol itself can evolve seamlessly over time.
Which can also cause drift, though :/