/plan-feature

Plan a feature into session-sized work items with verification criteria

# Plan Feature

Break down a feature into session-sized work items with clear acceptance criteria and verification commands.

## Purpose

This command implements the "initializer agent" pattern from Anthropic's long-running agent research. It produces a `feature_list.json` that:
- Guides subsequent coding sessions
- Provides clear start/finish boundaries
- Enables automated verification

## Input

The command argument should describe the feature:


Or reference a ticket:


## Workflow

### Phase 1: Discovery

1. **Understand the request**
   - Parse feature description or fetch Jira ticket ...