honker: A SQLite extension adding Postgres-style NOTIFY/LISTEN with durable queues, pub/sub, and streams

Summary

honker is a SQLite extension and set of language bindings that brings PostgreSQL-style NOTIFY/LISTEN semantics to SQLite. It enables durable pub/sub messaging, task queues, event streams, and scheduling directly within SQLite without requiring client polling, external daemons, or message brokers. The project ships as a Rust crate, a SQLite loadable extension, and packages for multiple programming languages including Python, Node.js, Bun, Ruby, Go, Elixir, and C++. The on-disk layout is defined once in Rust, with all bindings built on top of that core.