Nice, yeah also I have planner nodes, review nodes and organizer nodes (organizers can mutate the graph/workflow, create new node types, etc.) Trying to automate the node type/role definitions and overall workflow definitions as much as possible.

I split my project into 3 layers - the engine/infra layer (handles task dispatch/queuing, spinning up node/agent containers, etc.), the 'brain' - basically a collection of different workflow models and related stuff (multiple different models for testing/exploration purposes), and the harness.