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## Summary

<!-- 1-3 sentences: what changed and why. -->

## Type of change

<!-- Tick all that apply. -->

- [ ] Bug fix (non-breaking change that fixes an issue)
- [ ] New feature (non-breaking change that adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to change)
- [ ] Documentation only
- [ ] Test / CI / tooling
- [ ] Refactor (no functional change)

## Test plan

<!-- How was this verified? Manual steps, automated tests, screenshots for UI changes. -->

- [ ]
- [ ]

## Screenshots (UI changes only)

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## Checklist

- [ ] Targets the `main` branch (trunk-based — see [CONTRIBUTING.md](../CONTRIBUTING.md))
- [ ] `pnpm typecheck` passes locally
- [ ] `pnpm lint` passes locally
- [ ] `pnpm test` passes locally
- [ ] `pnpm format:check` passes locally
- [ ] `pnpm build` passes locally
- [ ] User-facing strings go through `t("key")` with both `messages/en.json` and `messages/de.json` updated
- [ ] No secrets, personal data, or maintainer-name references in committed files
- [ ] Updated `CHANGELOG.md` if user-visible
- [ ] Updated `docs/audit/` or `docs.healthlog.dev` if behavior or self-hosting docs change

## Linked issues

<!-- Closes #123, Refs #456 -->