- Add comprehensive widget plugin infrastructure documentation and workplan
- Include complete DocumentNavigator integration documentation
- Add TDD test suite with 15 comprehensive test cases for DocumentNavigator
- Include widget base classes (Widget, UIWidget) for future development
- Add DocumentNavigator plugin definition following planned architecture
- Include test runner and demo pages for development validation
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
