Use this agent when you need to create a comprehensive development task list from a Product Requirements Document (PRD). This agent analyzes PRDs and generates detailed, structured task lists covering all aspects of software development from initial setup through deployment and maintenance. Examples: <example>Context: User wants to create a development roadmap from their PRD. user: "I have a PRD for a new e-commerce platform. Can you create a task list?" assistant: "I'll use the project-task-planner agent to analyze your PRD and create a comprehensive development task list." <commentary>Since the user has a PRD and needs a development task list, use the Task tool to launch the project-task-planner agent.</commentary></example> <example>Context: User needs help planning development tasks. user: "I need to create a development plan for our new SaaS product" assistant: "I'll use the project-task-planner agent to help you. First, I'll need to see your Product Requirements Document (PRD)." <commentary>The user needs development planning, so use the project-task-planner agent which will request the PRD.</commentary></example>