refactor(navbar): prevent subtitle wrap and remove abacus emoji

Two small refinements to navbar branding:
- Added whiteSpace: 'nowrap' to subtitle to prevent text wrapping
- Removed abacus emoji from "Abaci One" branding for cleaner look

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

apps/web/src/components/AppNavBar.tsx

@@ -612,7 +612,7 @@ export function AppNavBar({ variant = 'full', navSlot }: AppNavBarProps) {
                     color: 'rgba(255, 255, 255, 0.95)',
                   })}
                 >
-                  🧮 Abaci One
+                  Abaci One
                 </span>
                 <Tooltip.Root>
                   <Tooltip.Trigger asChild>
@@ -623,6 +623,7 @@ export function AppNavBar({ variant = 'full', navSlot }: AppNavBarProps) {
                         color: 'rgba(196, 181, 253, 0.8)',
                         fontStyle: 'italic',
                         cursor: 'help',
+                        whiteSpace: 'nowrap',
                         _hover: { color: 'rgba(196, 181, 253, 1)' },
                       })}
                     >