Removes client-side Leaflet MarkerCluster library in favor of
server-side clustering at all zoom levels:
- Zoom 1-8: Density dots
- Zoom 9-15: Server-generated numbered clusters
- Zoom 16+: Individual property markers
This prevents the visual issue where server-returned clusters were
being re-clustered by the client into a single merged marker.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Hanson.xyz Dev
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