Export WeChat Official Account article links from mp.weixin.qq.com to local Markdown with front matter and localized images. Use when the user wants a CLI/script or workflow for saving WeChat public account articles as Markdown for personal learning, archive, AI input, Obsidian notes, or knowledge management. Supports Playwright-based page loading, WeChat DOM extraction, image downloading, Markdown conversion, batch URL files, and validation of export output.