Improve heatmap visibility: increase radius and opacity, reduce blur for clearer patterns

Reduce GPS noise for clearer heatmap differences between control strategies

Remove CircleMarker points visualization, keep only smooth HeatMap gradient

Improve heatmap rendering: wrap HeatMap in FeatureGroup and enhance marker visualization

Add CircleMarker fallback visualization to both single and combined heatmaps

Fix folium heatmaps: Use streamlit_folium for proper Streamlit integration

Add automatic model download fallback from GitHub releases

Fresh start: Clean repo without large file history - ready for HF Spaces