chore: upgrade dependencies, restructure shared libs, and fix UI

- Upgrade Nx 22.1.1 → 22.6.3 and all patch/minor dependencies
- Restructure shared libs: move business logic from utils to service
- Consolidate shadcn-ui into ui lib with atomic design pattern
- Fix container centering for landing app (Tailwind v4 compatibility)
- Fix button styling by updating @source directive in globals.css
- Fix SiCss3 → SiCss rename in react-icons 5.6
- Fix duplicate useSession export conflict
- Remove dead code, comments, and unused files

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/qrcampaign/src/app/layout.tsx

@@ -9,7 +9,6 @@ import { useAuthStore } from './features/auth/store/auth.store';
 import { Sidebar } from '../components/Sidebar';
 import { MenuOutlined } from '@ant-design/icons';
 
-// Helper to determine route types
 const isPublicRoute = (pathname: string) => {
   return pathname.startsWith('/auth') || pathname === '/auth/callback';
 };
@@ -21,22 +20,16 @@ export default function RootLayout() {
   const [mobileSidebarOpen, setMobileSidebarOpen] = useState(false);
 
   useEffect(() => {
-    // If we're on a public route, no auth check needed
     if (isPublicRoute(location.pathname)) {
       return;
     }
 
-    // AUTH CHECK
     if (!isAuthenticated) {
-      // No session -> Redirect to login
       navigate('/auth/login', { replace: true });
       return;
     }
   }, [location.pathname, navigate, isAuthenticated]);
 
-  // RENDER LOGIC
-
-  // 1. Public Pages (Full Layout Control)
   if (isPublicRoute(location.pathname)) {
     return (
       <>
@@ -46,7 +39,6 @@ export default function RootLayout() {
     );
   }
 
-  // 2. Protected Pages
   if (!isAuthenticated) {
     return null;
   }
@@ -59,7 +51,6 @@ export default function RootLayout() {
       />
 
       <div className="flex-1 flex flex-col min-w-0 overflow-hidden">
-        {/* Mobile Header */}
         <header className="lg:hidden bg-white border-b border-gray-200 px-4 py-3 flex items-center justify-between sticky top-0 z-30">
           <div className="flex items-center gap-3">
             <button