v0.7 - Archive Index Page Generation

This release introduces comprehensive archive index page generation functionality.

New Features

• 🗂️ Archive Index Pages: Generate comprehensive index pages linking all downloaded posts with metadata
• 📋 Multiple Formats: Support for HTML, Markdown, and Text archive formats
• 🏷️ Rich Metadata: Includes post titles, publication dates, descriptions, cover images, and download timestamps
• 📅 Smart Sorting: Posts automatically sorted by publication date (newest first)
• 🔗 Relative Links: Archive pages use relative paths for optimal portability

Usage

# Download posts and create archive index page
go run . download --url https://example.substack.com --create-archive --output ./downloads

# Create archive in specific format
go run . download --url https://example.substack.com --create-archive --format md --output ./downloads

The archive page is generated as index.{format} in the output directory root, providing a comprehensive overview of all downloaded content.