Claude Code adds a /design command for terminal UI mockups

Anthropic added a /design command to Claude Code that lets developers generate UI mockups as artboards directly in the terminal before writing any code. Claude reads the existing codebase and matches the current UI style.

Why it matters: This pushes Claude Code further from a coding assistant toward a full design-to-code workflow tool, reinforcing Anthropic's strategy of folding more of the software development lifecycle into one agentic product.