- Added email_address field to EditFormData interface
- Updated handleEditRsvp to populate email field from rsvp.attendee_email
- Modified handleEditSubmit to include email_address in submission data
- Added snackbar state variables for user feedback notifications
- Enhanced handleSendEmail and handleCopyLink with success/error snackbar messages
- Added handleSnackbarClose function for snackbar management
- Improved user experience with immediate visual feedback for admin actions
- Fixed issue where email field would show [object Object] instead of actual email text