- Create FusionProvider component that initializes TaskStore and provides it via React context
- Add useFusion() hook for accessing TaskStore and project path from any child component
- Implement detectProjectDir() utility that walks up directory tree looking for .fusion/fusion.db
- Update package entry point with context exports and demo app
- Add @fusion/core as dependency to TUI package
- Add comprehensive tests for FusionProvider, useFusion hook, and detectProjectDir
- Add API documentation to README with usage examples
