Downloads and archives X (Twitter) posts, articles, and threads as structured Markdown with media. Supports single and batch download with anti-detection measures. Use when the user wants to save, download, archive, or convert X/Twitter posts to Markdown. Triggers: "download tweet", "save this X post", "archive this tweet", "convert tweet to markdown", "batch download tweets", or when user provides x.com / twitter.com URLs and asks to save/download them.