Add an info link (ℹ️) to each item card that opens the item's detail
page in a new tab. The link is:
- Subtle and hidden by default (opacity: 0)
- Visible on hover or focus-within for mouse/keyboard users
- Always visible (60% opacity) on touch devices
- Accessible with proper aria-label
- Opens in new tab with target="_blank" and rel="noopener"
This is the first commit of Phase 2 (Detail-Oriented Experience),
adding contextual navigation to item details.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
