Add DB schema version table

This page is a capture in the discarded bucket of the product backlog.

Resolved (deep backlog refinement, 2026-07-11): projects/ores.sql/create/database/database_database_infos_create.sql already defines a database_infos table whose comment states it 'Stores the schema version, git commit, and build environment inserted at database creation time', and projects/ores.sql/utility/dump_database_version.sh / database_info_fn_create.sql provide accessors. The capture's claim of no way to know schema version is no longer true.

At present we have no way of knowing what version of the schema we are running. We should probably look into sqitch.

Links:

• GH: golang-migrate: "Database migrations written in Go. Use as CLI or import as library."
• GH: tern: "Tern is a standalone migration tool for PostgreSQL. It includes traditional migrations as well as a separate optional workflow for managing database code such as functions and views."
• GH: sqitch: "Sqitch is a database change management application."