release-note-publisher

Draft, refine, and publish bilingual PigeonPod GitHub release notes from commits on the `release` branch. Use when Codex needs to compare commits since the latest published GitHub release, write a new local release note under `dev-docs/release-notes`, align English and Chinese release-note sections after user edits, or create/update a GitHub Release while keeping the markdown H1 as the GitHub release title instead of the release body.