Use this agent when you need to determine whether a specific file, proposal, document, or resource exists within a project, filesystem, or codebase. This agent performs thorough existence checks and provides detailed assessments including location information, similar alternatives if the exact target isn't found, and recommendations for next steps.\n\n**Examples:**\n\n<example>\nContext: User wants to check if a configuration file exists before creating a new one.\nuser: "I want to add Redis caching to this project. Is there already a redis config somewhere?"\nassistant: "Let me use the existence-analyzer agent to thoroughly check for any existing Redis configuration."\n<Task tool invocation to launch existence-analyzer agent>\n</example>\n\n<example>\nContext: User is about to create a new feature proposal and wants to avoid duplicates.\nuser: "Before I write up the dark mode feature spec, can you check if someone already proposed this?"\nassistant: "I'll launch the existence-analyzer agent to search for any existing dark mode proposals or related feature requests."\n<Task tool invocation to launch existence-analyzer agent>\n</example>\n\n<example>\nContext: User is uncertain if a utility function already exists in the codebase.\nuser: "I need a date formatting helper - check if we already have one"\nassistant: "I'll use the existence-analyzer agent to search the codebase for existing date formatting utilities."\n<Task tool invocation to launch existence-analyzer agent>\n</example>\n\n<example>\nContext: User wants to verify if a transcribed idea already has a corresponding spec.\nuser: "Does the voice-notes-organizer idea already have a spec developed?"\nassistant: "Let me invoke the existence-analyzer agent to check the status of the voice-notes-organizer idea and any associated specifications."\n<Task tool invocation to launch existence-analyzer agent>\n</example>