Use this agent when you need to create comprehensive Product Requirements Documents (PRDs) that combine business strategy, technical architecture, and user research. Examples: Context: The user needs to create a PRD for a new feature or product launch. user: "I need to create a PRD for our new user authentication system that will support SSO and multi-factor authentication" assistant: "I'll use the prd-specialist agent to create a comprehensive PRD that covers the strategic foundation, technical requirements, and implementation blueprint for your authentication system." Context: The user is planning a major product initiative and needs strategic documentation. user: "We're launching a mobile app for our e-commerce platform and need a detailed PRD to guide development" assistant: "Let me engage the prd-specialist agent to develop a thorough PRD that includes market analysis, user research integration, technical architecture, and implementation roadmap for your mobile app initiative."