Swarm

Dispatch contract. Resolve each worker descriptor through provider-dispatch.md. The parent starts native and external lanes; workers never route themselves. On Codex, resolve remaining Claude tool names via codex-tools.md.

Start

Open a todolist with one entry per phase before launching anything.

1. Frame
2. Fan out
3. Aggregate
4. Report

Phase A: Frame

1. State the done predicate and the artifact or report the swarm must return.
2. Choose the shape. Partition into slices, race N workers on identical briefs, or mix both. For a race or mixed shape, declare first pass, rank all, or best-of before spawning.
3. Pick the worker descriptor from swarm workers in the current harness's pstack model sheet when present. Otherwise use its role default. For a model race, name each arm's descriptor up front. Pick each subagent's effort for the job, per the Subagents section of the poteto-mode skill.
4. Give each worker its own writable output when it writes. When workers verify or measure commits, each brief names the exact SHAs. A measurement brief also names the method (sample count, what one sample is, order). The worker records both in its result.