Postgres Admin

Non-destructive PostgreSQL administration over a direct TCP connection (node-postgres). Read/audit of databases, roles, permissions, tables, connections, and extensions; plus data-safe admin DDL — create database/role, grant/revoke, rotate passwords, and an idempotent app_provision composite. Never reads or writes table rows; never DROP/TRUNCATE; no arbitrary-SQL passthrough.

Republish to clear a transient dependency-trust B from the 2026.05.30 publish (pg@8.21.0 was freshly released and not yet past the trust gate; pin unchanged). No code or README behavior changes.