The distributed systems world solved long-running transactions with SAGA. The agentic AI world has a harder version of the same problem. Here's how Agent Harness answers it. Introduction I've been deep in agentic AI architecture for a while now & building Digital Workers , designing multi-agent systems , working through the messy production realities of agents that call tools, consult knowledge bases, and loop back on themselves when they're uncertain. And one question keeps coming up when I tal