v0.1.1

Changed

CloudNativePG Image Volume Extension Distribution

• Extension-only OCI image — replaced the full PostgreSQL Docker image
  (ghcr.io/<owner>/pg_stream) with a minimal scratch-based extension image
  (ghcr.io/<owner>/pg_stream-ext) following the
  CNPG Image Volume Extensions
  specification. The image contains only .so, .control, and .sql files
  (< 10 MB vs ~400 MB for the old full image).
• New cnpg/Dockerfile.ext — release Dockerfile for packaging pre-built
  artifacts into the scratch-based extension image.
• New cnpg/Dockerfile.ext-build — multi-stage from-source build for
  local development and CI.
• New cnpg/database-example.yaml — CNPG Database resource for
  declarative CREATE EXTENSION pg_stream (replaces postInitSQL).
• Updated cnpg/cluster-example.yaml — uses official CNPG PostgreSQL 18
  operand image with .spec.postgresql.extensions for Image Volume mounting.
• Removed cnpg/Dockerfile and cnpg/Dockerfile.release — the old full
  PostgreSQL images are no longer built or published.
• Updated release workflow — publishes multi-arch (amd64/arm64) extension
  image to GHCR with layout verification and SQL smoke test.
• Updated CI CNPG smoke test — uses transitional composite image approach
  until kind supports Kubernetes 1.33 with ImageVolume feature gate.

---