---
name: plan-project
description: Use when user asks to plan a feature or design architecture.
allowed-tools: Read, Grep, Glob
argument-hint: [feature-description]
---
1. Understand requirement from $ARGUMENTS
2. Explore codebase for patterns
3. Plan: affected files, steps, dependencies, risks
4. Save to `plans/` in project root
5. End with open questions (extremely concise)