Fix EAN13 validation logic and improve code safety (Vibe Kanban)#4

dkpoulsen wants to merge 1 commit intofeature/add-numeric-displaydkpoulsen/EAN13View:feature/add-numeric-displayfrom

vk/6aa4-look-for-bugsdkpoulsen/EAN13View:vk/6aa4-look-for-bugsCopy head branch name to clipboard