Use this tool to suggest switching to plan agent when the user's request would benefit from planning before implementation. If they explicitly mention wanting to create a plan ALWAYS call this tool first. This tool will ask the user if they want to switch to plan agent. Call this tool when:- The user's request is complex and would benefit from planning first- You want to research and design before making changes- The task involves multiple files or significant architectural decisions Do NOT call this tool:- For simple, straightforward tasks- When the user explicitly wants immediate implementation