Expand description
Basic JSON value -> Arrow type inference. Deliberately simpler than
crate::pg_type::PgType::from_json_value - this is for a schemaless
JSON-to-Arrow decode path (no string sniffing for UUID/timestamp/date;
arrays, objects, and null all collapse to Utf8), not the richer
SQL-facing inference PgType does. The two serve different purposes
and are not duplicates to reconcile.