.github/pull_request_template.md

## What

<!-- A one-paragraph description of what this PR changes. -->

## Why

<!-- Why this change is needed. Link to an issue if one exists. -->

Closes #

## How

<!-- Brief notes on approach. If there's a less obvious choice, flag it. -->

## Checklist

- [ ] I ran the test suite locally
- [ ] I added tests for new behavior (or explained why I didn't)
- [ ] I updated the README / docs if behavior changed
- [ ] I bumped the version in the appropriate file, if this is a release-visible change

## Screenshots / terminal output

<!-- Paste any relevant output, especially for UI or CLI-visible changes. -->

## Notes for the reviewer

<!-- Anything I'd want you to look at especially carefully. -->