Visual JSON design and 3D navigation

## Problem
Large, complex JSON structures are hard to visualize and navigate in traditional tree views.

## Solution
Add alternative visualization modes:
- Interactive node graph visualization
- Mind map representation
- 3D tree navigation for deep structures
- Flowchart export capabilities

## Benefits
- Better understanding of complex data relationships
- Engaging user experience
- Alternative navigation methods
- Visual data exploration

## Implementation Notes
- Consider integration with visualization libraries
- Implement efficient rendering for large graphs
- Add export capabilities for visualizations
- Maintain performance with large datasets

## Acceptance Criteria
- [ ] Graph view with interactive nodes and edges
- [ ] Mind map mode for hierarchical data
- [ ] 3D navigation for deep JSON structures
- [ ] Export visualizations as images/SVG
- [ ] Smooth transitions between view modes
- [ ] Performance optimization for large structures