ENHANCEMENT: Improve search with fuzzy matching

[jt14den]

Goal

Upgrade current basic search to fuzzy search that searches across multiple fields and highlights results.

Tasks

• Evaluate search libraries (Fuse.js lightweight vs Algolia hosted)
• Implement chosen library
• Configure search to index: name, description, keywords, subTopic
• Add fuzzy matching for typo tolerance
• Implement search result highlighting
• Add no results state with suggestions
• Maintain existing filter compatibility
• Test search performance with full lesson dataset
• Add loading states if using async search

Recommended Approach

Start with Fuse.js (client-side, no API keys needed) for MVP simplicity.

Reference

See STUDENT_README.md Phase 2 Enhancement #5