## Description

<!-- What does this PR do? Keep it concise. -->

## Type

- [ ] `feat` — New feature
- [ ] `fix` — Bug fix
- [ ] `docs` — Documentation only
- [ ] `refactor` — Code change that neither fixes a bug nor adds a feature
- [ ] `style` — Formatting, CSS, UI tweaks
- [ ] `perf` — Performance improvement
- [ ] `ci` — CI/CD changes
- [ ] `chore` — Maintenance / tooling

## Checklist

- [ ] `npm run lint` passes with 0 errors
- [ ] `npm run build` succeeds
- [ ] Tested in browser (dark + light theme)
- [ ] No hardcoded secrets or credentials
- [ ] Commit messages follow [Conventional Commits](https://www.conventionalcommits.org/)

## Screenshots

<!-- If this changes the UI, add before/after screenshots. Delete this section otherwise. -->

## Related Issues

<!-- Closes #123, Fixes #456 — or delete this section -->