Clearer merch pages and easier sharing
- Redesigned merch pages with clearer product titles, creator links, prices, and purchase options on desktop and mobile.
- Added a visible Share button for copying a product link, opening supported device sharing menus, and downloading product images. Creator shop links open directly to the Merch tab.
- Added a mobile purchase bar while keeping footer links accessible above it.
- Improved product-card contrast and alignment, added View product links, and made details and reviews easier to browse.
- Cleaned up review forms, share-panel spacing, and gallery captions, with clearer mobile zoom guidance and simpler galleries for single-image products.