for web crawling references: * https://github.com/mendableai/firecrawl * https://qiita.com/hara2dev/items/a04b9724de9e7a1d4867#firecrawl%E3%82%92%E3%83%AD%E3%83%BC%E3%82%AB%E3%83%AB%E7%92%B0%E5%A2%83%E5%86%85%E3%81%A7%E4%BD%BF%E7%94%A8%E3%81%99%E3%82%8B
