Release Changelog

Find the last stable tag:

git tag --list 'v*' --sort=-version:refname | head -1
git log v{last}..HEAD --oneline --no-merges

The planned stable version comes from one of:

• an explicit maintainer request
• the chosen bump type applied to the last stable tag
• the release plan already agreed in doc/RELEASING.md

Do not derive the changelog version from a canary tag or prerelease suffix.

Step 2 — Gather the Raw Inputs

Collect release data from:

1. git commits since the last stable tag
2. .changeset/*.md files
3. merged PRs via gh when available

Useful commands:

git log v{last}..HEAD --oneline --no-merges
git log v{last}..HEAD --format="%H %s" --no-merges
ls .changeset/*.md | grep -v README.md
gh pr list --state merged --search "merged:>={last-tag-date}" --json number,title,body,labels

Step 3 — Detect Breaking Changes

Look for:

• destructive migrations
• removed or changed API fields/endpoints
• renamed or removed config keys
• major changesets
• BREAKING: or BREAKING CHANGE: commit signals

Key commands:

git diff --name-only v{last}..HEAD -- packages/db/src/migrations/
git diff v{last}..HEAD -- packages/db/src/schema/
git diff v{last}..HEAD -- server/src/routes/ server/src/api/
git log v{last}..HEAD --format="%s" | rg -n 'BREAKING CHANGE|BREAKING:|^[a-z]+!:' || true

If the requested bump is lower than the minimum required bump, flag that before the release proceeds.

Step 4 — Categorize for Users

Use these stable changelog sections:

• Breaking Changes
• Highlights
• Improvements
• Fixes
• Upgrade Guide when needed

Exclude purely internal refactors, CI changes, and docs-only work unless they materially affect users.

Guidelines:

• group related commits into one user-facing entry
• write from the user perspective
• keep highlights short and concrete
• spell out upgrade actions for breaking changes

Step 5 — Write the File

Template:

# v{version}

> Released: {YYYY-MM-DD}

## Breaking Changes

## Highlights

## Improvements

## Fixes

## Upgrade Guide

Omit empty sections except Highlights, Improvements, and Fixes, which should usually exist.

Step 6 — Review Before Release

Before handing it off:

1. confirm the heading is the stable version only
2. confirm there is no -canary language in the title or filename
3. confirm any breaking changes have an upgrade path
4. present the draft for human sign-off

This skill never publishes anything. It only prepares the stable changelog artifact.