CHANGES:
- Auctions page now uses public layout (Header/Footer) instead of CommandCenterLayout
- Intelligence page now uses public layout (Header/Footer) instead of CommandCenterLayout
- Both pages accessible without login
- Login CTA banner shown to non-authenticated users
- Opportunities tab locked for non-authenticated users (shows ?)
- Price alerts feature requires login
- Consistent layout between both public pages:
- Same hero section with title and refresh button
- Same 4-column stats grid
- Same CTA banner design
- Same filter/search layout
- Same table component
- Same pagination design
