Changes:
- Added pounce-logo.png to /public
- Updated Header.tsx: Replaced text logo with Image component
- Updated Footer.tsx: Replaced text logo with Image component
- Updated login/page.tsx: Replaced text logo with Image component
- Updated register/page.tsx: Replaced text logo with Image component
Logo sizing:
- Header: 32px (mobile) / 36px (desktop)
- Footer: 40px
- Login/Register: 48px
All logos use Next.js Image component for optimization
