- Add ResponsiveLayout component with dynamic row/column splitting based on terminal size
- Create terminal utility for detecting terminal dimensions and layout preferences
- Add truncate utility for smart text truncation with min/max bounds
- Implement comprehensive responsive layout tests with all breakpoints
- Update TUI exports to expose new layout and utility components
- Enhance README documentation with responsive layout guide and examples
- Add ScreenRouter component for multi-screen navigation in TUI
- Implement tab bar with icon labels and active state indicators
- Support keyboard navigation with arrow keys and Tab/Shift+Tab
- Add mouse click support for tab selection
- Export new screen router components from package index
- Add comprehensive unit tests for navigation behavior
- Update documentation with architecture and gap analysis
- Update TUI README with ScreenRouter usage examples
