## Summary

Brief description of changes.

## Changes

-

## Type

- [ ] Bug fix
- [ ] New feature
- [ ] Refactoring
- [ ] Documentation
- [ ] Other: ___

## Checklist

- [ ] `tsc --noEmit` passes
- [ ] `npx tsx scripts/check-i18n.ts` passes (if i18n keys changed)
- [ ] No hardcoded Chinese in `src/components/` or `src/app/`
- [ ] New API routes include proper authentication
- [ ] No secrets or credentials in code
- [ ] Tests added/updated (if applicable)

## Screenshots (if UI changes)

| Before | After |
|--------|-------|
|        |       |
