Brainstorm Skill

Multi-approach exploration protocol. Use when there are multiple valid ways to solve a problem and you need to pick the best one — not just the first one that comes to mind.

Use this when: The task has 2+ viable approaches and the wrong choice would be expensive to reverse (architecture, data model, complex UI pattern).

Don't use this when: There's an obvious approach, or the task is small enough that any approach works. Don't brainstorm how to add a CSS class.

When to Trigger

1. Architecture decision: New store shape, new service, new component hierarchy
2. Algorithm choice: Multiple valid approaches with different tradeoffs
3. UI pattern decision: Modal vs. panel vs. inline? Drag vs. click? Canvas vs. DOM?
4. Integration approach: How to connect a new feature with existing systems
5. Performance tradeoff: Eager vs. lazy, cache vs. recompute, sync vs. async

Protocol (4 steps, under 5 minutes)

Step 1: Define the Decision

Write in this format:

DECISION: [What specifically needs to be decided]
CONSTRAINTS: [Non-negotiable requirements]
CONTEXT: [What already exists that this must work with]

Example:

DECISION: How to implement undo/redo for track operations
CONSTRAINTS: Must handle 100+ operations, must work with Zustand, must support grouped operations
CONTEXT: Existing projectStore with track/clip actions, no current undo system

Step 2: Generate 2-3 Approaches

For each approach, write exactly:

• Name: Short descriptive name
• How it works: 2-3 sentences
• Pros: What's good about it
• Cons: What's risky or costly
• Effort: S / M / L

Use WebSearch if you need to verify feasibility of an approach.

Rules:

• Minimum 2 approaches, maximum 4. Don't pad with bad options.
• At least one approach should be the "simple/boring" option.
• At least one approach should be the "ideal if we had unlimited time" option.
• Don't include approaches that violate the constraints.

Step 3: Score and Select

Score each approach on:

Pick the highest-scoring approach. If two are tied, pick the simpler one.

Step 4: Document the Decision (brief)

Add a comment at the top of the primary file:

// Architecture decision: [approach name]
// Alternatives considered: [other names]
// Rationale: [1 sentence why this one won]

For significant decisions (new store, new service, new data model), also record in .llm/decisions.md with the full scoring table.

Anti-Patterns

• Analysis paralysis: Spending 20 minutes comparing approaches for a 10-minute task. If the task is small, skip brainstorming and just do it.
• Phantom options: Including an approach you'd never actually pick just to have 3 options. Two genuine options is better than three with one filler.
• Ignoring the codebase: Proposing an approach that conflicts with existing patterns. Always check what patterns the codebase already uses.
• Premature optimization: Picking the "fastest" approach when any approach is fast enough. Optimize for maintainability first.
• Committee of one: Brainstorming without constraints leads to scope creep. Always define constraints first.

Integration with Other Skills

• If an approach requires research: use /quick-research inline
• If the decision involves UI: check .claude/references/design-patterns.md
• If the decision involves store shape: check .claude/references/store-api.md
• After deciding, proceed with TDD implementation per do-todo workflow