Auctionator MobileCart

- Improved the custom MobileCart UI layout and positioning to better match the themed artwork
- Refined the search, recent search, selected item, and shopping cart placement for a cleaner overall presentation
- Reworked the cart list to use available space more naturally and scroll based on the visible area
- Added clearer cart row styling and improved spacing for item display, quantity fields, and remove buttons
- Updated the price snapshot display to show a date-based snapshot format
- Continued polishing Auction House integration and overall usability
- Various visual cleanup and layout fixes