pr-summarize - PR Changelog Generator

Generate a clear, minimal changelog for the current branch.

Instructions

1. •Run git log --oneline main..HEAD to get commits on the branch
2. •Run git diff main...HEAD --stat to see changed files
3. •Run git diff main...HEAD to read the actual changes
4. •Produce a changelog using the template below

Template

## <Short imperative title describing the change>

## Why

<One sentence explaining the motivation or problem>

## How

- <Bullet points describing what was done, keep each line short>
- <Focus on what changed, not implementation details>

Rules

• •Title must be short and imperative (e.g. "Add X", "Fix Y")
• •"Why" is one sentence max
• •"How" bullets should be minimal and clear
• •No fluff, no over-explanation
• •Output only the changelog, nothing else