feat: add Event Intelligence Command Center dashboard

[saidai-bhuvanesh]

🚀 feat: add Event Intelligence Command Center dashboard

✨ Overview

This PR introduces a futuristic Event Intelligence Command Center Dashboard for DevCard — transforming the platform into a realtime developer networking, hackathon analytics, and AI-powered engagement ecosystem. The update adds advanced event visualizations, contributor intelligence systems, predictive networking analytics, and reusable visualization infrastructure using lightweight native SVG rendering with Svelte 5.

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🎯 Key Features

🤖 AI Event Intelligence

• AI-powered engagement insight engine
• Smart collaborator prediction system
• Live activity intelligence feed
• Networking momentum analysis
• Realtime contributor visibility tracking

📊 Advanced Event Analytics

• Networking pulse dashboard
• QR scan velocity monitoring
• Contribution forecasting graphs
• Growth analytics radar systems
• Event dominance visualization
• Live contributor activity heatmaps

🕸️ Interactive Visualization System

• Native SVG radar chart rendering
• Reusable chart utility infrastructure
• Interactive data points with accessibility support
• Dynamic forecasting visualizations
• Event interaction heatmaps

🔥 Realtime Networking Experience

• Live contributor activity feed
• Event participation timeline
• Smart compatibility radar
• Contributor streak intelligence
• Engagement forecasting systems

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🏗️ Components Added

AI & Intelligence

• AIEngagementInsights.svelte
• AISkillMatcher.svelte
• MomentumInsights.svelte
• LiveActivityFeed.svelte

Analytics & Dashboard

• AnalyticsWidget.svelte
• NetworkingPulseCard.svelte
• ContributionForecastChart.svelte
• NetworkingGrowthForecast.svelte

Visualization Components

• ContributionRadar.svelte
• GrowthRadar.svelte
• CompatibilityRadar.svelte
• EventRadar.svelte
• ActivityHeatmap.svelte
• EventInteractionHeatmap.svelte

Event Systems

• DeveloperMatchCard.svelte
• EventTimeline.svelte

Shared Infrastructure

• InsightFeed.svelte
• Shared SVG chart utility systems
• Reusable visualization rendering helpers

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⚡ Technical Improvements

Performance

• Lightweight native SVG rendering
• No heavy charting library dependency
• Optimized Svelte 5 reactive architecture
• Reusable visualization utilities

Security

• Removed unsafe @html rendering patterns
• Replaced with secure text interpolation
• Safer reusable insight rendering system

Accessibility

• Added ARIA labels across visualizations
• Keyboard-focus support for interactive graphs
• Improved semantic SVG rendering
• Accessible realtime interaction states

Scalability

• Modular reusable component architecture
• Shared chart utility abstraction
• Centralized visualization infrastructure
• Future-ready analytics dashboard system

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🧪 Validation

✅ Svelte 5 compatibility verified
✅ TypeScript support confirmed
✅ Responsive layouts tested
✅ Interactive SVG rendering validated
✅ Accessibility interactions verified
✅ No backend changes introduced
✅ Frontend-only modular implementation

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🔒 Architecture Notes

• Frontend-only implementation
• No API or backend modifications
• No authentication flow changes
• Fully reusable visualization system
• Modular analytics-driven architecture
• Low merge-conflict probability

[saidai-bhuvanesh]

Applied a complete frontend architecture hardening pass including reusable visualization extraction, accessibility improvements, security-safe rendering updates, performance optimizations, duplicate rendering cleanup, and reusable analytics infrastructure stabilization.