- Replace manual variant cards with MultiSelect component
- Add VARIANT_OPTIONS with FileImage/FileType icons
- Make base variant disabled (always required, cannot be removed)
- Show upload zones only for selected variants (reactive with field.state.value)
- Move remove button to top-right corner as small icon-only button
- Add icon preview section with proper object-contain styling
- Use form.Subscribe for reactive preview updates
- Validate icon names against existing icons from database
- Show clear error message when icon already exists
- Remove isExistingIcon field (updates not yet supported)
- Improve preview image display with centered flex layout
- Add variant labels below preview images
- Consolidate form into single Card component
- Fix image cropping issues with object-contain instead of object-cover