---
description: Generate a pull request description
---
Generate a PR description based on the changes in this branch (`git log --oneline main..HEAD` and `git diff main`).

Structure:
## What
Brief description of the change.

## Why
Motivation and context.

## How
Implementation approach and key decisions.

## Testing
How this was tested.

## Checklist
- [ ] Tests added/updated
- [ ] Documentation updated
- [ ] No breaking changes (or documented)

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