- Copy pg-knoe-auth/ wholesale from upstream/knoe-db/20260523 (Task 1 of
docs/plans/junie/upstream-knoe-db-20260523-integration.md).
- Extension: PG18 OAUTHBEARER JWT validator using libcurl + OpenSSL RS256.
- knoe-db/Dockerfile: add libcurl4-openssl-dev to dev deps; COPY src/ and
build with make USE_PGXS=1 install after tds_fdw.
- NOT enabled in the default database build (absent from 20_create_extensions.sh).
To enable: CREATE EXTENSION pg_knoe_auth; (requires pg_hba.conf oauth_issuer).
Closes Task 1 of upstream-knoe-db-20260523-integration.md.