Build a metadata WHERE fragment. In jsonMetadata mode fields resolve via JSON_VALUE on
the sibling table's metadata column; in column mode they resolve to live entity columns
(c.[Field]) — which is what lets entityColumn-mode filters hit current relational values.
Supports the _pgvectorConditions envelope and the generic {field:value} / {$eq} / {$in}
shapes, matching the pgvector provider's filter semantics.
Build a metadata
WHEREfragment. InjsonMetadatamode fields resolve viaJSON_VALUEon the sibling table'smetadatacolumn; incolumnmode they resolve to live entity columns (c.[Field]) — which is what lets entityColumn-mode filters hit current relational values. Supports the_pgvectorConditionsenvelope and the generic{field:value}/{$eq}/{$in}shapes, matching the pgvector provider's filter semantics.