Search WeChat public account articles by keyword with title, summary, publish time, and source information.

• Searches WeChat articles across topics including technology, AI, social trends, finance, education, and workplace content
• Returns article metadata: title, summary, publication date, source public account name, and access links
• Supports optional parameters for result count (up to 50), JSON file output, and real URL resolution for article links
• Requires Node.js with the cheerio package installed; respects rate limits and anti-scraping measures to avoid IP blocking