feat(landing): restructure footer with enamad seal, contact info, and logo

- Remove login/register/dashboard nav links from the footer
- Add Enamad trust seal on the left
- Center the contact block (title, phone, email) in the middle
- Move the logo to the right side
- Place the copyright line at the bottom, centered
- Update copyright text and add contact strings (fa/en)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/i18n/dictionaries/en.ts

@@ -112,7 +112,10 @@ const en: Dictionary = {
       ctaSecondary: 'Dashboard',
     },
     footer: {
-      copyright: '© Abrban — All rights reserved',
+      copyright: 'All rights to this website belong to Abrban',
+      contactTitle: 'Contact us',
+      phone: '021-91092762',
+      email: 'info@abrban.com',
     },
   },