Variable COLUMNAR_REPRESENTATION_ENCODINGSConst Experimental

COLUMNAR_REPRESENTATION_ENCODINGS: readonly DuckDbGeometryEncoding[] = ...

Physical geometry encodings with an executable columnar producer today.

These are the GeoParquet 1.1 native encodings that map 1:1 onto a Honua GeoArrow geometry kind, so a batch can be produced without inventing a geometry type. The multi-part encodings (geoarrow-multipoint, geoarrow-multilinestring, geoarrow-multipolygon) are deliberately absent: this SDK's dependency-free GeoArrow mapping has no multi-part kind, and re-labelling their parts as a single-part column would misreport the geometry.