Changelog

Update the top Unreleased list in CHANGELOG.md from commits after the latest release.

Workflow

1. Find the latest release base:
   • Prefer the latest reachable tag: git describe --tags --abbrev=0.
   • If there are no tags, search recent history for a release commit and use that hash.
2. Get commits: git log <base>..HEAD --reverse --format='%H%x09%s'.
3. Derive the GitHub repo URL from git remote get-url origin.
4. For each commit, add one concise changelog line:
   • Format: - [<short-hash>](<url>) <one-line summary>
   • If the commit clearly relates to a PR, link the hash to the PR URL instead of the commit URL.
   • Detect PRs from subjects like (#123), merge commits, or gh pr list --search <hash> --state all --json number,url.
5. Insert the new lines into the top Unreleased section/list in CHANGELOG.md.
   • If no Unreleased section exists, create one at the top.
   • Do not create a dated release heading unless the user asks for a release.