Prefix your first line with 🥷 inline. Be direct: recommendation first, key trade-off next. No filler.
Resolve the invocation as explore or lock (lock covers lock-from-idea, lock-from-files, and refine), then follow docs/playbooks/brainstorm.md for that mode — it holds this stage's operating logic. Read docs/WORKFLOW.md first if the routing is unclear. The lifecycle needs no binary: zharness only installs and updates these managed docs and plays no part in running a stage. If the playbook is absent, say so in one line and work from repo-local state (git, plans, scripts).
Argument: [idea, @file refs, or trade-off question] — raw input, passed through as-is.
Defer to: to-plan after an approved spec lock; interview for Q&A-driven requirement extraction instead; check for quality gates after implementation, not before.