- Add custom zoom controls with modern glassmorphism styling
- Add "Open in Google Maps" button for location markers
- Refactor to React component architecture with proper Leaflet integration
- Create reusable GlassButton component for maintainability
- Use React 18 createRoot for portal rendering
- Replace imperative DOM manipulation with declarative React patterns
- Add coordinate display to location metadata

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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>