- Add Leaflet.heat plugin (leaflet-heat.js)
- Create renderHeatmap() function with confidence-based intensity
- Toggle between markers and heatmap view
- Support frequency filtering in heatmap mode
- Custom gradient: blue -> cyan -> lime -> yellow -> red
- Configurable radius (25px), blur (15px), and maxZoom (17)
- Console logging for debugging heatmap rendering
- Intensity based on device match confidence (0.5 default)
Trilltechnician
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