4.6.0

@steadybrew/postgresjs@4.6.0 makes new connections cheaper and fixes COPY, subscribe() and TLS errors on Cloudflare Workers. It promotes 4.6.0-rc1 unchanged. No breaking changes.

npm install @steadybrew/postgresjs@4.6.0

• Opening a connection costs less CPU with SCRAM-SHA-256 passwords.
• On Cloudflare Workers, COPY ... TO STDOUT streams and sql.subscribe() work.
• On Cloudflare Workers, a server whose certificate Workers don't trust, such as Supabase's, fails at once with TLS_CLOSED.
• On Cloudflare Workers, ssl: 'prefer' connects without TLS when the server doesn't offer it.
• On Deno, sslnegotiation: 'direct' connects to PostgreSQL 18.

See the changelog for details and upstream references.

Validation: CI passed on Node 22/24/26 × PostgreSQL 15–18, Deno and workerd (run); Workers CPU per connection no higher than 4.5.1 at median, p95 or p99 (gate, 150-round A/B). A day in production on Node.js and Deno matched 4.5.0 with no connection errors.