fix: rename Office Translator to Wordly everywhere

Replaced all references to "Office Translator" with "Wordly" across
i18n translations (13 locales), auth forms, layout components, admin
sidebar, and page metadata.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

frontend/src/app/admin/AdminSidebar.tsx

@@ -23,7 +23,7 @@ export function AdminSidebar() {
           <Languages className="size-3 text-background" />
         </div>
         <span className="text-xs font-semibold tracking-tight text-foreground">
-          Office Translator
+          Wordly
         </span>
         <Badge
           variant="outline"

frontend/src/app/auth/register/RegisterForm.tsx

@@ -170,7 +170,7 @@ export function RegisterForm() {
             <Languages className="h-6 w-6" />
           </div>
           <span className="text-2xl font-semibold text-foreground group-hover:text-primary transition-colors duration-300">
-            Office Translator
+            Wordly
           </span>
         </Link>
 

frontend/src/app/layout.tsx

@@ -16,7 +16,7 @@ const inter = Inter({
 });
 
 export const metadata: Metadata = {
-  title: "Office Translator - Translate Documents, Keep the Format",
+  title: "Wordly - Translate Documents, Keep the Format",
   description: "Translate Excel, Word, and PowerPoint documents with zero formatting loss. Fast, private, and accurate document translation.",
 };