Extract clean text
from any URL

// Request
GET /extract?url=https://paulgraham.com/persistence.html

// Response
{
  "success": true,
  "data": {
    "title": "The Right Kind of Stubborn",
    "content": "Successful people tend to be persistent...",
    "author": "Paul Graham",
    "word_count": 1936,
    "reading_time_minutes": 8,
    "language": "en"
  }
}