Postgres pipelines from the JVM with Bpdbi

Bpdbi is a new JVM database library for Postgres that leverages the wire protocol's pipelining feature to eliminate per-query round-trip latency, which typically adds 8-10ms of idle waiting per transaction. Derived from the Vert.x SQL Client but stripped of reactive/async complexity, Bpdbi uses blocking I/O with Java 21 virtual threads and Postgres' binary protocol to deliver high performance with a small footprint. Unlike JDBC, which cannot pipeline queries, Bpdbi sends multiple queries without waiting for individual responses, making it especially beneficial for Row-Level Security workflows like those in Supabase.