Eve durable execution on the Workflow SDK

What this is

Eve sessions are multi-turn, resumable, and crash-safe, built on the open-source Workflow SDK. The durability spans tool calls, subagent delegation, and human pauses: a session can survive a crash and resume, and it can hold across a human-in-the-loop pause rather than being torn down.

Why it matters

Durable, resumable execution turns the harness from an ephemeral runner into recoverable stateful infrastructure. For an operator, the relevant promise is about recovery and pauses: a long-running agent that delegates to subagents and waits for a human decision can be interrupted and continued without losing the run. The durability is a property of the runtime, carried by the Workflow SDK, not bolted on per agent.

Operator consequence

• Crash recovery and human pauses become a runtime guarantee rather than caller-implemented retry logic.
• The Workflow SDK dependency is a thing to understand: it is where execution state lives, which bears on where agents can be hosted and recovered.

Open question

• What exactly is persisted, where, and for how long across a pause or crash? The hosting and recovery story (and any constraint the Workflow SDK imposes) is an open registration question in sources/eve.yml.