[lia-by-librechat]

Summary

Bump @librechat/agents from 4.2.1 to 4.2.2 to release the Responses cache-write TTL and Langfuse accounting fixes merged in #673. Unblocks LibreChat-AI/LibreChat#18023.

Only the manifest and npm lockfile root versions change. Dependency pins and runtime source are unchanged. The legacy Bun lockfile has no package-root version entry and stays unchanged, matching prior releases.

Keep the squash commit subject v4.2.2 so the existing release workflow recognizes it. Merging into main will run npm publication and GitHub release workflows. This PR does not publish, tag, or merge anything itself.

Verification

• Manifest/lockfile version agreement, unchanged dependency pins, release-subject checks, and git diff --check: passed.
• Cache/tracing regression tests: 332 passed across 17 suites.
• npx tsc --noEmit and npm run build: passed.
• npm pack --dry-run --ignore-scripts: verified 4.2.2 metadata plus CJS, ESM and type entry points.
• Manifest formatting: passed. Source lint/import sorting is not applicable to a version-only diff.
• Full suites and live-provider tests were not run locally.
• GitHub CI: all 13 checks passed at b0f8acd8753d2a80b24b0556e5593f07e0e14d2a. Independent review completed with no findings at b0f8acd8753d2a80b24b0556e5593f07e0e14d2a.

[lia-by-librechat]

Head: b0f8acd8753d2a80b24b0556e5593f07e0e14d2a. Version-only bump to 4.2.2, releasing merged #673 and unblocking LibreChat-AI/LibreChat#18023. Manifest and lockfile root versions agree; dependency pins and runtime source are unchanged. Focused cache/tracing tests, typecheck, build and pack dry-run are running alongside exact-head independent review. Keep the squash subject v4.2.2 for the existing release workflow. No merge, tag or publication was performed.

[lia-by-librechat]

Independent review completed for b0f8acd8753d2a80b24b0556e5593f07e0e14d2a: no findings. All 13 CI checks pass. Local verification also passed: 332 cache/tracing tests, tsc --noEmit, build, manifest formatting and package dry-run with CJS/ESM/type entry points. Only the manifest and npm lockfile root versions change. Preserve squash title v4.2.2 for release automation. No merge, tag or publication was performed.