Technical design documents for significant architecture decisions.
Each design doc covers the problem, proposed solution, alternatives considered, and trade-offs. Design docs are written before implementation begins.
Run the Design Doc Writer agent with an approved PRD:
claude --agent design-doc-writer
The agent will interview you about architecture decisions, research the codebase, and produce a design doc from the template. The output's Task Breakdown section feeds directly into Claude Code's plan mode for implementation.