Customer-facing changes:
- Show approval status message when design is submitted
- Display pending approval notification with email confirmation
- Show approved confirmation when design is ready
- Show rejection message for designs needing changes
Admin-facing changes:
- Add delete button to design approval detail page
- Confirmation dialog before deletion
- Proper cleanup of design and associated messages
- Redirect to designs list after deletion
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
