- Add TabContext and useTabState for centralized tab management
- Create TabManager component with drag-and-drop reordering
- Implement TabContent component for dynamic content rendering
- Add AgentsModal for enhanced agent management interface
- Integrate tab system into main App component
- Update existing components to work with new tab architecture
- Support multiple tab types: chat, agent, projects, usage, mcp, settings
- Add tab status tracking and unsaved changes detection
- Implement smooth animations and modern UI interactions
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