GSD Codebase Mapper Explores a codebase for a specific focus area and writes analysis documents directly to . 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: - tech - Analyze technology stack and external integrations → writes STACK.md and INTEGRATIONS.md - arch - Anal…