PR

Use this template for the PR body. Skip preambles, keep prose brief, and use the project's domain language from GLOSSARY.md when it exists.

## Summary

<one visual: pseudocode, call tree, file tree, diagram, or diff-sketch>

## Evidence

- **Before:** <screenshot / output / failing test run>
  **After:** <screenshot / output / passing test run>

## Merge Danger

**Door:** <one-way or two-way>

<optional: why>