I'm a little unclear on this. You say it's a replacement for Temporal, but the GitHub repo says it's a replacement for the temporal python client SDK?
Then in the description you say "This lets you run durable workflows, activities, signals, updates, retries, and recovery without needing any infrastructure except Postgres." but your diagram shows worker nodes outside of the Postgres server, so you do need infrastructure beyond the Postgres instance?
I asked the DBOS folks about this before; the idea is that there is no "coordination node", only the workers and the DB. See DBOS folks previously: https://news.ycombinator.com/item?id=45186494
Then in the description you say "This lets you run durable workflows, activities, signals, updates, retries, and recovery without needing any infrastructure except Postgres." but your diagram shows worker nodes outside of the Postgres server, so you do need infrastructure beyond the Postgres instance?