oddk: Postgres for the 3 a.m. failure

Field notes

oddk provisions PostgreSQL through a static Go binary and Docker, waiting for the database to answer before marking an instance ready. Its parameter groups derive settings such as shared_buffers and max_connections from the instance's CPU and RAM, while snapshots combine database data with oddk configuration. The documented recovery model targets both single-instance restoration and reconstruction of a host from an archive and a key.