brainstorming

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---
name: brainstorming
description: This skill should be used before implementing features, building components, or making changes. It guides exploring user intent, approaches, and design decisions before planning. Triggers on "let's brainstorm", "help me think through", "what should we build", "explore approaches", ambiguous feature requests, or when the user's request has multiple valid interpretations that need clarification.
---

# Brainstorming

This skill provides detailed process knowledge for effective brainstorming sessions that clarify **WHAT** to build before diving into **HOW** to build it.

## When to Use This Skill

Brainstorming is valuable when:
- Requirements are unclear or ambiguous
- Multiple approaches could solve the problem
- Trade-offs need to be explored with the user
- The user hasn't fully articulated what they want
- The feature scope needs refinement

Brainstorming can be skipped when:
- Requirements are explicit and detailed
- The user knows exactly what they want
- The task is a straightforward bug fix or well-defined change

## Core Process

### Phase 0: Assess Requirement Clarity

Before diving into questions, assess whether brainstorming is needed.

**Signals that requirements are clear:**
- User provided specific acceptance criteria
- User referenced existing patterns to follow
- User described exact behavior expected
- Scope is constrained and well-defined

**Signals that brainstorming is needed:**
- User used vague terms ("make it better", "add something like")
- Multiple reasonable interpretations exist
- Trade-offs haven't been discussed
- User seems unsure about the approach

If requirements are clear, suggest: "Your requirements seem clear. Consider proceeding directly to planning or implementation."

### Phase 1: Understand the Idea

Ask questions **one at a time** to understand the user's intent. Avoid overwhelming with multiple questions.

**Question Techniques:**

1. **Prefer multiple choice when natural options exist**
   - Good: "Should the notification be: (a) email only, (b) in-app only, or (c) both?"
   - Avoid: "How should users be notified?"

2. **Start broad, then narrow**
   - First: What is the core purpose?
   - Then: Who are the users?
   - Finally: What constraints exist?

3. **Validate assumptions explicitly**
   - "I'm assuming users will be logged in. Is that correct?"

4. **Ask about success criteria early**
   - "How will you know this feature is working well?"

**Key Topics to Explore:**

| Topic | Example Questions |
|-------|-------------------|
| Purpose | What problem does this solve? What's the motivation? |
| Users | Who uses this? What's their context? |
| Constraints | Any technical limitations? Timeline? Dependencies? |
| Success | How will you measure success? What's the happy path? |
| Edge Cases | What shouldn't happen? Any error states to consider? |
| Existing Patterns | Are there similar features in the codebase to follow? |

**Exit Condition:** Continue until the idea is clear OR user says "proceed" or "let's move on"

### Phase 2: Explore Approaches

After understanding the idea, propose 2-3 concrete approaches.

**Structure for Each Approach:**

```markdown
### Approach A: [Name]

[2-3 sentence description]

**Pros:**
- [Benefit 1]
- [Benefit 2]

**Cons:**
- [Drawback 1]
- [Drawback 2]

**Best when:** [Circumstances where this approach shines]
```

**Guidelines:**
- Lead with a recommendation and explain why
- Be honest about trade-offs
- Consider YAGNI—simpler is usually better
- Reference codebase patterns when relevant

### Phase 3: Capture the Design

Summarize key decisions in a structured format.

**Design Doc Structure:**

```markdown
---
date: YYYY-MM-DD
topic: <kebab-case-topic>
---

# <Topic Title>

## What We're Building
[Concise description—1-2 paragraphs max]

## Why This Approach
[Brief explanation of approaches considered and why this one was chosen]

## Key Decisions
- [Decision 1]: [Rationale]
- [Decision 2]: [Rationale]

## Open