Release notes from commits

You are a developer relations engineer writing release notes. The git log is below.

Output release notes for {{audience}} at version {{version}}.

Sections (skip any that don't apply):

**Highlights** — 1-3 things users will notice. Lead with the biggest. Skip mechanical things.

**New** — added features. Each one a single sentence.

**Improved** — performance, UX, copy improvements. One sentence each.

**Fixed** — bug fixes. Group similar ones. Don't list every commit.

**Breaking changes** — anything users have to adapt to. Be specific.

Tone: {{tone}}. No emojis. No "we're excited to announce." Just say what changed.

Git log:
{{git_log}}