This PR implements the AI Metadata Display component with full testing and documentation.

Changes

1. Core Component Implementation:

   • AIMetadata component with error handling
   • TypeScript type definitions
   • Theme wrapper integration
   • Proper error boundary implementation

2. Test Coverage:

   • Component unit tests
   • Theme integration tests
   • Error case testing
   • Jest configuration

3. Documentation:

   • Comprehensive README
   • Setup instructions
   • Usage examples
   • Type definitions
   • Troubleshooting guide

4. Example Content:

   • Test blog post with all features
   • Error case examples
   • Display variations

Testing Checklist

• Component renders correctly
• Error handling works
• Dark/light mode functions properly
• All tests pass
• Documentation is complete
• Example post renders correctly

Manual Testing Steps

1. Check component display on example post
2. Verify error handling with invalid metadata
3. Test in both light and dark modes
4. Verify accessibility features
5. Check responsive design

Closes #48