release-notes

name	release-notes
description	Generate polished release notes for a new version by inspecting git history and past release formats. Supports creating the git tag and publishing the release via `gh release create`. Invoke when the user asks to write release notes, publish a release, or draft a changelog entry for a new version.

Release Notes

Generate well-structured release notes for a new version, publish them as a GitHub Release, and optionally create the git tag.

Workflow

1. Determine the version and scope

• If the user provides a version (e.g. "5.6.1"), use it.

• If not, read Cargo.toml or pyproject.toml (or the project's primary version file) to find the current version. Compare with the latest git tag to confirm what's unreleased.

• Determine if this is a major, minor, or patch release based on semver: the last component of the version.

2. Gather the changelog

• Find the latest tag with:

  git tag --sort=-v:refname | head -5
  

  If the user supplied a previous version, use that as the base. Otherwise use the latest tag.

• Get all commits between the previous tag and HEAD:

  git log --oneline --no-merges <prev-tag>..HEAD
  

• Get the full commit log with conventional commit types and PR references:

  git log --format="%h %s" <prev-tag>..HEAD
  

• Get the tag date (needed to filter PRs by merge date):

  git log -1 --format="%ci" <prev-tag>
  

• Get all merged PRs in this range — prefer the merge-commit approach first (more reliable), then cross-reference with gh pr list for author/URL details:

  # List merge commits to identify PR numbers in range
  git log --merges --format="%h %s" <prev-tag>..HEAD
  
  # Then fetch full PR details for those numbers
  gh pr list --state merged --base main --json number,title,author,mergedAt,url \
    --jq '.[] | select(.mergedAt > "<prev-tag-date>")'
  

• Verify version in source file matches intent — if the version file shows a version different from what the user requested, check the git log for version bump commits to understand the actual state (e.g. a bumped-then-reverted scenario).

• Detect new contributors by checking if any PR author has no prior merged PRs:

  gh pr list --state merged --json author --jq '[.[].author.login] | unique'
  

3. Study past release style

Read the last 2–3 releases to detect the current format convention:

gh release view <prev-tag> --json body,tagName
gh release view <prev-tag-2> --json body,tagName

Identify:

• Section naming: ## Fixed, ### Features, ## 🚀 Features, ## What's Changed, etc.
• Summary style: whether a prose summary paragraph opens the notes (common for patch releases) or just goes straight into sections.
• PR listing: ## PRs, ## PR's, ## What's Changed, or inline per-section.
• New contributors: whether ## New Contributors is used.
• Full Changelog format: always ends with **Full Changelog**: ...

4. Categorise changes by conventional commit type

Group commits into sections based on their conventional commit prefix:

Prefix	Section header	Notes
feat	## Features or ### Added	New capabilities
fix	## Fixed	Bug fixes
refactor	## Changed or ## Refactoring	Code restructuring
docs	## Documentation	Documentation changes
chore	## Chores	Maintenance, version bumps, lockfile syncs
ci	## Chores or inline	CI/CD changes (section depends on past style)
test	## Tests or fold into ## Fixed	Test additions tied to fixes
perf	## Performance	Performance improvements
build	## Build or ## Chores	Build system changes
revert	## Fixed or ## Changed	Reverts

For patch releases, prefix sections with ##. For minor feature releases, ## or ### both appear in past practice — follow the most recent style.

5. Write the release notes body and save to file

Use this structure, adapting to the detected project style:

[Optional summary paragraph — one or two sentences summarising the release]

## [Section header matching past style]

- [Description of change with context, why, and impact. (#PR-number)]
- [Multi-line descriptions are indented two spaces on continuation lines.]

## Section 2
...

## PRs

- [conventional-commit(scope): message] by @author in https://github.com/[owner]/[repo]/pull/[number]

## New Contributors

- @user made their first contribution in https://github.com/...

**Full Changelog**: https://github.com/[owner]/[repo]/compare/[prev-tag]...[new-tag]

Rules:

• Each change bullet should say what changed, why (context/pain point), and optionally the impact — not just repeat the commit message.
• Patch releases (x.y.Z) should open with a concise summary paragraph.
• Formatting: use backticks for code, file paths, flags, and types.
• PR references: use (#NN) shorthand within sections, full link in PRs section.
• The Full Changelog link always compares the previous tag to the new one.

Always save the notes to a file in the project root so the user can easily review, edit, and copy them:

RELEASE_NOTES_<version>.md

Present a summary of the notes to the user, then ask whether they want to publish (create tag + GitHub release) or make edits first.

6. Create the tag (if requested)

If the user asks to publish or create the release:

# Determine target commit — usually main HEAD
git log -1 --format="%H" main

# Create the tag on latest main
git tag <version> <commit-hash>
git push origin <version>

Verify the tag points to the latest main commit — never to a detached or stale commit.

7. Create the GitHub Release

gh release create <version> -F - <<'BODYEOF'
<release-notes-body>
BODYEOF

After creation, set the release title to match the version:

gh release edit <version> --title "<version>"

8. Verify

Confirm with:

gh release view <version> --json name,tagName,url --jq '{name, tagName, url}'

Edge Cases

Scenario	Action
No previous tag	Use git log --oneline from the beginning of git history
Tag already exists locally but stale	Delete local tag (git tag -d <tag>), delete remote (git push origin :refs/tags/<tag>), delete release (gh release delete <tag> --yes), then recreate
Tag exists but on wrong (stale) commit	Delete tag and release, recreate on latest main
User wants a draft release	Add --draft to the gh release create command
User wants a prerelease	Add --prerelease to the gh release create command
No PRs in the release range	Generate notes from raw commit messages, grouped by conventional commit type
Auto-release pipeline already created a release	Check with gh release view <tag>; if exists, prompt user before overwriting
Multiple repos	Use the current working directory's git remote to infer owner/repo

Downstream Release Verification

If the project has a notify-downstream workflow that dispatches release events to other repos (e.g. pre-commit hooks, GitHub Actions, companion packages), verify that those downstream repos' workflows actually create GitHub Releases, not just push tags.

Common failure pattern: a downstream update-version.yml workflow does git tag && git push but lacks gh release create. The tag gets pushed, no release is created, and the dispatch appears "successful" in the upstream pipeline logs.

Check: After publishing, inspect downstream repos:

gh release view <tag> --repo <downstream-owner/repo> --json tagName

If missing, add to the downstream workflow:

- name: Create GitHub Release
  env:
    GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
  run: |
    VERSION="${{ github.event.client_payload.version }}"
    gh release create "v${VERSION}" --title "v${VERSION}" --generate-notes

Style Reference

This project follows a professional tone without emoji section markers, using ## headers and descriptive bullet points that explain the "what", "why", and impact of each change rather than just paraphrasing commit messages.