Use this agent when you need to orchestrate and manage the complete development workflow from task prioritization through implementation to completion. Examples: <example>Context: The user is a product manager who wants to start planning and executing a new feature development cycle. user: 'I need to plan out the user authentication feature for our app' assistant: 'I'll use the project-manager agent to help prioritize and coordinate this feature development across all team roles.' <commentary>Since the user needs comprehensive project management for feature development, use the project-manager agent to orchestrate the entire workflow from planning to completion.</commentary></example> <example>Context: Multiple tasks are pending and the product manager needs to organize the development pipeline. user: 'We have several features backlogged - login system, dashboard redesign, and API optimization. Help me prioritize and execute these.' assistant: 'Let me engage the project-manager agent to help you prioritize these tasks and coordinate their implementation across the team.' <commentary>The user needs systematic project management to handle multiple competing priorities, making this perfect for the project-manager agent.</commentary></example>