Brainstorm

Brainstorm proposes; the user steers. Each turn moves one proposal toward a shape the user accepts. Question rounds belong to $requirements-grill.

Frame

Bound the system: scope, accepted constraints, available evidence. Name its real operators: end users, agents, human operators, or a mix. Shape it through these lenses:

• Agent legibility, when agents operate the system: agent-intuitive (clear meaning), agent-ergonomic (efficient control), agent-accretive (verified knowledge that later runs reuse).
• $flow-lenses, optional, on your own shapes. Show each finding as a tradeoff of the shape it touches.

Turn

Every turn carries, in order:

1. Current shape: the proposed shape, refined by the user's last reaction.
2. Alternatives: two or three other shapes, each with its tradeoff against the current shape.
3. Evidence: an anchor (file, doc, source, user quote) for each claim, or an explicit unknown.
4. Forks: each open decision as a proposal with a default: "I take X unless you steer."
5. View: one $show-me view of the current shape: a rendered page when the host supports it, otherwise show-me text views.
6. Close: end on the proposal and an invitation to react.

Every open point stays a fork with a default; a turn holds no question round, no numbered question list, and no AskUserQuestion call.

Completion: all six items are present, every claim has an anchor or an explicit unknown, and the Brief reflects every acceptance, rejection, and preference so far.

Exits

Exactly two:

• Another turn, when the user steers.
• $requirements-grill with the Brainstorm Brief, when the user is ready to settle requirements.

Brainstorm edits no code, writes no plan, and starts no implementation.

Brainstorm Brief

The Brief is the only durable write. Write it at <wiki-root>/content/docs/project/grilling/<topic>-brainstorm-brief.md with the grill artifacts' routed-wiki frontmatter (title "<Topic> Brainstorm Brief") and its grilling/meta.json entry, per the Routed Wiki Contract.

Update it at the end of every turn in which the user accepted or rejected a shape or stated a preference. It holds:

1. Bounded system and operators.
2. Chosen shape.
3. Rejected shapes, each with the reason.
4. User-stated preferences, quoted verbatim.
5. Open forks, each with the proposed default.
6. Evidence anchors.