## What and why

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## Screenshots

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## Checklist

- [ ] `scripts/check.sh` passes
- [ ] The gallery shows it: a story on its chapter's page, and `python3 scripts/stories.py` rerun
- [ ] Keyboard works: Tab reaches it, focus ring shows, Enter and Space press it
- [ ] Reduced motion holds its motion still
- [ ] `AGENTS.md` names any new rule or dependency
- [ ] For `frontend/`: `pnpm test`, `pnpm build` and `pnpm e2e` pass