Add render configuration for Next.js frontend and Express.js backend services

Remove emoji from title in layout metadata for consistency

Enhance layout metadata for SparkNotes summarizer with detailed descriptions, keywords, and Open Graph support; add logo image.

Create README.md

Update README.md

Create README.md

Improved `SummaryBox` to support PDF downloads with enhanced formatting and error handling.

Fix: Correctly resolve the path for cookies.txt in summarizer.py

Update API endpoints to use production URLs for mindmap, summary, whatifs, and xtended routes

Add yt-dlp dependency and refactor summarizer to use it; update HeroSection image path

Initial clean commit