🚀 Major Feature Update: Chart Generation, Visualization, Dark Mode & Performance

📹 Demo Video

https://github.com/user-attachments/assets/706be701-c8f6-4144-b58b-bb04d7eb155c

---

🎯 Overview

This PR introduces major enhancements: intelligent chart generation, comprehensive visualization capabilities, dark mode, and performance optimizations.

Related Issues:

✨ Key Features

📊 Chart Generation & Visualization

• Multiple Chart Types: Bar, line, pie, scatter, and area charts
• Intelligent Selection: AI automatically selects the best chart type
• Interactive Charts: Built with Recharts for smooth visualizations
• Canvas Integration: Charts render on interactive ReactFlow canvas
• Auto-configuration: Automatic axis detection and color assignment

New Tools: generateBarChartTool, generateLineChartTool, generatePieChartTool, generateScatterPlotTool, autoSelectVisualizationTool

🌙 Dark Mode

• System integration with next-themes
• Persistent theme preferences
• Toggle control in sidebar
• Comprehensive component coverage
• Optimized OKLCH color palette

⚡ Performance Optimizations

• Code splitting and dynamic imports
• Strategic memoization (React.memo, useMemo)
• Lazy loading for heavy components
• Improved streaming response handling
• Reduced unnecessary re-renders

🎨 UI/UX Enhancements

• Modern design system with Tailwind CSS v4
• Mobile-first responsive layout
• Improved accessibility (WCAG 2.1 AA)
• Smooth animations and transitions

🔧 Technical Changes

New Dependencies:

• next-themes - Theme management
• recharts - Chart rendering
• @xyflow/react - Canvas functionality
• zustand - State management

Key Files:

• src/components/charts/ - Chart components
• src/lib/tools/visualization-tools.ts - AI visualization tools
• src/app/layout.tsx - Theme provider integration
• src/app/globals.css - Dark mode styles

🧪 Testing

• ✅ All chart types render correctly
• ✅ Dark mode works across all components
• ✅ Performance improvements verified
• ✅ Responsive design tested
• ✅ Accessibility checks passed

📝 Migration Notes

No breaking changes - Fully backward compatible.

For Developers

• Dark mode is enabled by default via ThemeProvider in src/app/layout.tsx
• Chart tools are automatically available in the reporting phase
• Use useTheme() hook from next-themes for theme-aware components

For Users

• Dark mode toggle available in sidebar
• Charts automatically appear when agent generates visualizations
• All existing functionality remains unchanged

🐛 Bug Fixes

• Fixed code block rendering in dark mode
• Improved chart performance with large datasets
• Fixed canvas state persistence
• Resolved theme flicker on load

---

Checklist

• Code follows style guidelines
• Self-review completed
• Documentation updated
• Tests passing
• Performance tested
• Accessibility verified

Ready for Review 🎉