v4.27.0

v4.27.0

Tagged 2026-04-21. 4 changes between v4.26.0 and v4.27.0.

Reconstructed from the git tag range on 2026-08-06 during a changelog backfill — releases v4.17.0 through v4.33.0 shipped without notes. Every item below is a real commit; none of the wording infers intent beyond what the commit itself states.

Features

• langchain-py-pack — Epic A1 foundation + pain catalog + orphan rewrites (#546)

Fixes

• ci — Add workflow_dispatch to Gemini PR review
• npm — Align repository.url with canonical repo slug for provenance (#545)
• publish — Avoid SIGPIPE abort in mass-publish enumerate step (#544)