onlineBasemapProvider

Online basemap tile provider used as fallback when a property has no per-property MBTiles (mapTilesFilerId is null/empty).

Default: CARTO_CDN (Carto's free public CDN, same provider as the Mapsted web app at maps.mapsted.com — no API key).

For OPENMAPTILES_SELF_HOSTED also set onlineBasemapVectorTileUrl and onlineBasemapStyleAsset. For CUSTOM_RASTER set onlineBasemapRasterTileUrl.