- Remove non-existent getVideoDetails import and usage
- Fix getSubtitles API call to match actual package interface
- Add proper Subtitle type to replace any usage
- Convert subtitle data types to match Caption interface
- Install missing @vercel/node dependency
- Replace 'any' type with proper type annotations
- Add explicit type checking for video details response
- Improve description field extraction with better type safety
- Add comments for better code documentation