Navbar redesign (floating pill)
- New top menu: sticky floating capsule with blur, active section shown as a filled blue pill (built-in
NavLink active="exact"pathname matching). - Log in / Register collapsed into a single account icon with a dropdown; authenticated users get an avatar with email-derived initials (Cabinet / Log out).
- Mobile: hamburger opens a rounded card with stacked links and full-width Log in / Register buttons.
- Brand: logo + "okama" wordmark replaces the "Okama widgets" text.
- Design mockups kept in-repo:
docs/design/navbar/(variant C approved).
Full suite incl. e2e: 1063 passed.