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/backoffice/src/app/(protected)/accounts/page.tsx

@@ -28,7 +28,6 @@ interface Account {
   address: string;
 }
 
-// Mock data for demonstration
 const mockData: Account[] = Array.from({ length: 90 }, (_, i) => ({
   id: i + 1,
   name: i === 0 ? 'Ahmad Wijuana' : 'Nama Lengkap',
@@ -136,13 +135,10 @@ export const Components: FC = (): ReactElement => {
   return (
     <Fragment>
       <main className="w-full px-[48px] py-[40px] flex flex-col gap-8">
-        {/* Header */}
         <header className="bg-white py-4 px-8 rounded-lg shadow p-4">
           <h1 className="text-p2 font-semibold">Data Akun</h1>
         </header>
-        {/* Account Table Section */}
         <section className="flex flex-col gap-6 p-8 bg-white rounded-md">
-          {/* Search and Filter */}
           <div className="flex justify-between items-center gap-8 mb-2">
             <div className="relative w-full">
               <Input
@@ -171,12 +167,10 @@ export const Components: FC = (): ReactElement => {
               )}
             </div>
           </div>
-          {/* Table */}
           <DataTable data={mockData} columns={columns} table={table} />
         </section>
       </main>
 
-      {/* Modal Edit Account */}
       <ModalEditAccount
         currentStep={currentStep}
         isOpen={showModalEditAccount}