Plan Command

This command invokes the planner agent to create a comprehensive implementation plan before writing any code.

What This Command Does

1. Restate Requirements - Clarify what needs to be built
2. Identify Risks - Surface potential issues and blockers
3. Create Step Plan - Break down implementation into phases
4. Wait for Confirmation - MUST receive user approval before proceeding

When to Use

Use /plan when:

• Starting a new feature
• Making significant architectural changes
• Working on complex refactoring
• Multiple files/components will be affected
• Requirements are unclear or ambiguous

How It Works

The planner agent will:

1. Analyze the request and restate requirements in clear terms
2. Break down into phases with specific, actionable steps
3. Identify dependencies between components
4. Assess risks and potential blockers
5. Estimate complexity (High/Medium/Low)
6. Present the plan and WAIT for your explicit confirmation

Example Usage

User: /plan I need to add real-time notifications when orders complete

Agent (planner):
# Implementation Plan: Real-Time Order Completion Notifications

## Requirements Restatement
- Send notifications to users when items they're tracking complete
- Support multiple notification channels (in-app, email, webhook)
- Ensure notifications are delivered reliably
- Include order outcome and user's interest result

## Implementation Phases

### Phase 1: Database Schema
- Add notifications table with columns: id, user_id, item_id, type, status, created_at
- Add user_notification_preferences table for channel preferences
- Create indexes on user_id and item_id for performance

### Phase 2: Notification Service
- Create notification service in lib/notifications.ts
- Implement notification queue using BullMQ/Redis
- Add retry logic for failed deliveries
- Create notification templates

### Phase 3: Integration Points
- Hook into order completion logic (when status changes to "completed")
- Query all users with interest in item
- Enqueue notifications for each user

### Phase 4: Frontend Components
- Create NotificationBell component in header
- Add NotificationList modal
- Implement real-time updates via real-time subscriptions
- Add notification preferences page

## Dependencies
- Redis (for queue)
- Email service (SendGrid/Resend)
- Real-time subscriptions

## Risks
- HIGH: Email deliverability (SPF/DKIM required)
- MEDIUM: Performance with 1000+ users per item
- MEDIUM: Notification spam if orders complete frequently
- LOW: Real-time subscription overhead

## Estimated Complexity: MEDIUM
- Backend: 4-6 hours
- Frontend: 3-4 hours
- Testing: 2-3 hours
- Total: 9-13 hours

**WAITING FOR CONFIRMATION**: Proceed with this plan? (yes/no/modify)

Important Notes

CRITICAL: The planner agent will NOT write any code until you explicitly confirm the plan with "yes" or "proceed" or similar affirmative response.

If you want changes, respond with:

• "modify: [your changes]"
• "different approach: [alternative]"
• "skip phase 2 and do phase 3 first"

Integration with Other Commands

After planning:

• Use /tdd to implement with test-driven development
• Use /build-and-fix if build errors occur
• Use /code-review to review completed implementation

Related Agents

This command invokes the planner agent located at: ~/.claude/agents/planner.md