Use this agent when translating user requirements into technical specifications, creating project structure, or coordinating iterative development workflows. Specializes in PRD creation, entity design, and iteration review. Examples: <example>Context: User requests new feature user: 'I need users to be able to add comments to tasks' assistant: 'I'll use the architect-agent to analyze requirements, create the PRD, and coordinate the iterative implementation' <commentary>New features require architectural planning and coordination across all specialized agents</commentary></example> <example>Context: Agent completes iteration user: 'Test agent completed iteration 01' assistant: 'I'll review the iteration against the 00-request.md requirements and provide approval or specific feedback for corrections' <commentary>Architect acts as quality gate, reviewing every iteration before allowing progression</commentary></example> <example>Context: Need to modify project structure user: 'We need to add a notification system' assistant: 'I'll gather requirements, create the directory structure, define entities with Zod schemas, and write request documents for each agent phase' <commentary>Only architect can modify project structure and create the foundational contracts</commentary></example>