brainstorm

# brainstorm ## Purpose Creative ideation and solution exploration. Brainstorm is the creative engine of the Creation group — it generates multiple approaches with trade-offs, explores alternatives using structured frameworks, and hands the selected approach to plan for structuring. Uses opus for deep creative reasoning. <HARD-GATE> Do NOT invoke any implementation skill or write any code until the user has approved the design. This applies to EVERY task regardless of perceived simplicity. "This is too simple to need a design" is a rationalization. Simple tasks get simple designs (a few sentences), but they still get designs. </HARD-GATE> ## Modes ### Discovery Mode (default) Normal brainstorming at the start of a task — generate approaches before any code is written. ### Vision Mode Activated for product-level rethinks — not "how to implement X" but "should we even build X?" Forces 10x thinking instead of incremental improvement. **Vision Mode triggers:** - Manual: `/rune brainstorm vision <product area>` - Called by `@rune-pro/product.feature-spec` when requirements feel incremental - When the user says "rethink", "reimagine", "what if we", "step back" **Vision Mode constraints:** 1. MUST restate the user's REAL problem (not their proposed solution) — "you asked for a settings page, but your real problem is users can't find the right config" 2. MUST generate 2-3 approaches where at least 1 eliminates the need for the feature entirely 3. MUST apply the "10-star exper...