herd-flow: pi delegation through visible herdr panes

If invoked with arguments, treat them as the task to delegate: apply the routing reference below, then run the delegation protocol on that brief. If invoked bare, load this protocol and apply it to the work at hand.

Routing reference

Before writing a Workflow script or launching a dynamic workflow, read references/routing.md — the model-routing, reporting, and escalation rules this protocol operates under. This file covers HOW to run pi workers; the routing reference covers WHO does which work.

pi CLI mechanics