Create comprehensive repository descriptions and enhance documentation

[Copilot]

This PR addresses the request to create a description for the VidAI repository by providing comprehensive documentation and enhanced user-facing content.

What's Changed

📝 New Documentation Files

• GITHUB_DESCRIPTION.txt - Concise 164-character description perfect for GitHub's repository description field
• REPOSITORY_DESCRIPTION.md - Comprehensive project documentation including features, use cases, technical architecture, and future roadmap
• DESCRIPTION_SUMMARY.md - Summary of all descriptions created for easy reference

✨ Enhanced README.md

The existing README has been significantly improved with:

• Compelling tagline: "Transform videos into intelligent notes with AI"
• Enhanced introduction that clearly identifies target audiences (students, professionals, researchers, content creators)
• Emoji-enhanced Key Features section highlighting the main value propositions
• Detailed note-taking styles comparison table explaining all 6 available formats (Concise, Simple, Bullet Points, Outline, Detailed, Summary)
• Reorganized Additional Information with better categorization including:
  • Technical Details
  • Supported Platforms
  • Privacy & Security
  • Important Notes

Key Improvements

Better User Experience

The documentation now clearly communicates:

• What VidAI does and why it's valuable
• Who should use it and for what purposes
• How the 6 different note-taking styles work and when to use each
• Technical capabilities and limitations

GitHub Repository Appeal

• Short, descriptive text ready for GitHub's description field
• Professional presentation with emojis and clear formatting
• Comprehensive feature highlighting that showcases the AI-powered capabilities

Maintained Technical Accuracy

All improvements preserve the existing technical accuracy while making the content more accessible and engaging for potential users.

Usage

• Use the content from GITHUB_DESCRIPTION.txt for the GitHub repository description field
• The enhanced README provides improved user onboarding and feature discovery
• REPOSITORY_DESCRIPTION.md serves as comprehensive project documentation for detailed reference

This enhancement transforms the repository from having basic documentation to professional-grade presentation that effectively communicates VidAI's value proposition and capabilities.

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.