参照URL：
GoogleのAIエージェント「Project Mariner」
https://techcrunch.com/2025/05/20/google-rolls-out-project-mariner-its-web-browsing-ai-agent/
https://www.theverge.com/news/670848/google-agent-mode-gemini-app-project-mariner-i-o-2025
https://io.google/2025/
