PgQue: Zero-Bloat Postgres Queue

PgQue is a pure SQL reimplementation of PgQ, Skype's battle-tested Postgres queue, designed for managed providers without C extensions or external daemons. It eliminates bloat issues in SKIP LOCKED queues by using snapshot-based batching and table rotation. Compatible with Postgres 14+ on RDS, Aurora, Cloud SQL, Supabase, and Neon.