ci/frontend-builder (new): Node 24 + pnpm 10 + buf 1.55 + global
@bufbuild/protoc-gen-es 2.4 + Playwright chromium runtime libs +
ORAS. Used by KollectAI-ETL frontend CI to run TS proto codegen
locally (buf.gen.yaml uses `local: protoc-gen-es`) instead of the
rate-limited BSR remote-plugin path.
ci/java-builder: added the standalone buf binary so `buf lint` runs
in CI without an inline curl install. Backend Java codegen stays in
the Maven build (protobuf-maven-plugin), so no protoc plugins are
added to this image.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>