- SingleProduct.vue: rebuild gallery/header/action bar as a self-scrolling
layout with a sticky photo, solid-on-scroll header matching PageBar, and
a full-screen image preview (blurred overlay, centered thumbnail strip)
- Add GallerySlider.vue: pointer-based swipe carousel isolated in an
LTR subtree, fixing RTL/transform sign mismatch that caused slide jumps
- Fix Icon.vue: icon was read into a plain ref once at setup and never
updated on prop change; switch to computed so icon swaps (e.g. cart
qty stepper trash/minus toggle) actually re-render
- Fix quantity stepper DOM order in SingleProduct.vue/CartItem.vue so
plus/minus render correctly under RTL flex
- prisma/assign-downloaded-images.js: seed real product photos (FEATURED/
FEATURED_MOBILE/GALLERY/GALLERY_MOBILE) onto the 5 placeholder products