- Vinyl is now opt-in via a checkbox (unchecked by default)
- Item's base price is preserved; vinyl cost is added on top
- Checkbox label explains it's lettering on a separate 18" foil balloon
- Price breakdown shows vinyl as an add-on, not a replacement
- Validation only requires text/font when the checkbox is checked
- Editing a vinyl cart entry pre-checks the checkbox
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
chris
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