Translate all user-facing text to English and update UI elements

This commit addresses the user's request to translate all visible text within the application to English. It also updates the login modal to display the SAPIENS logo correctly. Additionally, various UI components and messages related to articles, community posts, auctions, and login/error handling have been localized.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 9a264234-c5d7-4dcc-adf3-a954b149b30d
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/3df548ff-50ae-432f-9be4-25d34eccc983/9a264234-c5d7-4dcc-adf3-a954b149b30d/CMG42YQ

client/src/pages/Article.tsx

@@ -99,8 +99,8 @@ export default function Article() {
   };
 
   const formatDate = (dateString: string | Date | null) => {
-    if (!dateString) return '미정';
-    return new Intl.DateTimeFormat('ko-KR', {
+    if (!dateString) return 'TBD';
+    return new Intl.DateTimeFormat('en-US', {
       year: 'numeric',
       month: 'long',
       day: 'numeric',
@@ -179,8 +179,8 @@ export default function Article() {
     return (
       <div className="min-h-screen bg-gray-50 flex items-center justify-center">
         <div className="text-center">
-          <h1 className="text-2xl font-bold mb-4">기사를 찾을 수 없습니다</h1>
-          <Button onClick={() => setLocation("/")}>홈으로 돌아가기</Button>
+          <h1 className="text-2xl font-bold mb-4">Article Not Found</h1>
+          <Button onClick={() => setLocation("/")}>Return Home</Button>
         </div>
       </div>
     );