This is what OP is explicitly not asking for—it's just a demo of a theoretical case, Temporal showing how a company that's hyped up on AI agents could use your platform to do agent-y things.
OP wants to know if anyone is actually using this stuff productively, not if anyone has tech demos. We've all seen more than enough tech demos.
This is interesting stuff, and a great stepping stone. I think the excitement around true agents will come when the AI can author the workflow pipeline, so to speak, in response to a request.
This is an area where terminology is in flux but I think of weak agents as mostly-hardcoded, eg if you wrote a flight booking bot that can converse with you about flight options then go do the booking - but you specified the APIs and workflow engine. Strong agents can self-directedly follow long range goals over long time frames, eg “run this business unit for me” or “manage my portfolio”.
OP wants to know if anyone is actually using this stuff productively, not if anyone has tech demos. We've all seen more than enough tech demos.