Submit raw PRD/plan/spec text plus a list of target repos; Codemind LLM-decomposes it into stories (each assigned to one of your declared repos, never an invented one) and dispatches them via the same path build_batch uses. Pass dryRun: true to see the decomposed story list without dispatching anything, useful for reviewing before committing. Recommended for a first-time caller: review with dryRun: true, then resubmit the (possibly edited) story list via build_batch directly — a second build_from_spec call with dryRun: false re-decomposes specText from scratch and will not reflect edits made to a prior dry run's output.