Medium article deep scraper with human login

search_keyword (Text): Medium topic to search (e.g., "n8n", "automation", "AI")

max_articles(Number 1-30): Articles to extract. Default: 10. More = longer execution.

export_format (Selection): "csv" (metadata) | "json" (full content) | "both" (both files).

Optional:
login_timeout (15 min fixed),
login_method (human login fixed),
browser_region (US default),
incognito_mode (Yes default)