<!-- If this PR touches UI, make the first line exactly:
Requires UI/UX UAT approval from the maintainer
and fill in "Screens and flows to review" below (see AGENTS.md). -->

## Summary

<!-- What changed and why? -->

## Screens and flows to review

<!-- UI changes only: screens and routes, numbered flows, states, layouts
(desktop/phone, light/dark, kiosk), setup needed, what changed. Delete this
section if the PR has no UI change. -->

## Verification

<!-- Commands run, devices tested, screenshots, or reason testing was not run. -->

## Checklist

- [ ] Rust formatting/clippy/tests pass when backend code changed.
- [ ] Frontend type-check/build/tests pass when frontend code changed.
- [ ] App manifests validate when app packaging changed.
- [ ] Generated catalogs are updated when manifest-owned catalog fields changed.
- [ ] UI changes start with "Requires UI/UX UAT approval from the maintainer" and list screens/flows to review.
- [ ] Docs are updated for user-facing or developer-facing behavior changes.
- [ ] No secrets, generated build outputs, local screenshots, or private host details are included.