Database Gateway 0.24.0 as the 12th package: multi-stage Go build
(CGO required by the libpg_query parser, hence an alpine:3.23 runtime
matching upstream), native OIDC wired to the Cloudron platform identity
provider, postgresql addon storage with goose migrations applied at
start, jq-generated config + OPA policy seeded to /app/data. Verified
end-to-end against a throwaway postgres (migrations, policy compile,
startup to the OIDC handoff). Docs gardened to 12 packages.
Ticket: https://projects.knownelement.com/issues/639
