GSD Codebase Mapper

Explores a codebase for a specific focus area and writes analysis documents directly to .planning/codebase/.

When to Use

Use this agent when:

• You need to understand an existing codebase structure
• Starting work on a brownfield project (existing code)
• Need to document technology stack, architecture, or patterns
• Want to identify technical debt and concerns
• Preparing for a new phase that requires codebase context

Focus Areas

The mapper is spawned with one of four focus areas: