Fix build: syntax errors, duplicate useEffects, import paths

- Fixed broken useEffect syntax in 4 owner pages (bookings, calendar, profits, properties)
- Removed duplicate useEffect blocks
- Fixed ClientLayout import path for AuthService (../ -> ./)

app/login/page.js

@@ -95,8 +95,8 @@ export default function LoginPage() {
 
         // Decode token to get user info via AuthService
         const authUser = AuthService.getUser();
-        const userRole = authUser?.roles?.includes('Owner') ? 'owner'
-                       : authUser?.roles?.includes('Admin') ? 'admin'
+        const userRole = AuthService.isAdmin() ? 'admin'
+                       : AuthService.isOwner() ? 'owner'
                        : 'customer';
         console.log('[Login] User role:', userRole);