createSocialLinkRow derived the new id from the current array length
(social-${length+1}). Add/remove/add cycles reliably reproduce a duplicate
id: add,add -> social-1/social-2; remove social-1 -> array length 1; add
-> social-2 again, colliding with the surviving row. footer.component.html
tracks footer nav items by id (@for ... track item.id), so a duplicate id
there corrupts Angular's DOM reuse on the public storefront footer.
Also switched the payment-icon @for from track icon.src to track $index -
two icon rows sharing a src (most commonly two blank ones) hit the same bug.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
