📊 Implement Learning Analytics Dashboard

## Description
Create analytics to help educators track student progress and hint usage patterns.

## Tasks
- [ ] Design analytics dashboard
- [ ] Track hint usage metrics
- [ ] Visualize student progress
- [ ] Add export functionality
- [ ] Create teacher reports

## Expected Outcome
Analytics dashboard providing insights into student learning patterns.

## Skills Required
- JavaScript/React
- Data visualization
- Backend integration

## Difficulty Level
🔴 Advanced

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*Hacktoberfest 2025 - Feature enhancement*

The issue names no files, tests, or entry points. Begin by mapping the existing JavaScript/React application and its backend integration, then define the dashboard, metrics, visualizations, exports, and teacher reports before implementation; done means all listed analytics capabilities are available.

Written by the indexing model from the issue text.