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## What

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## Why

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## How

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should know about. Skippable for one-liners. -->

## Test plan

- [ ] `cargo fmt --check`
- [ ] `cargo clippy --all-targets --all-features -- -D warnings`
- [ ] `cargo test --all`
- [ ] New code has a test (or here's why not):

## Surface changes

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- [ ] README.md updated (if the command table changed)
- [ ] docs/gh-to-fj.md updated (if the gh-equivalence shifted)
- [ ] CHANGELOG.md updated under `[Unreleased]`