feat(admin): full Persian (fa) localization + RTL polish

- admin-resources: all config titles/descriptions/columns/fields → Persian
- AdminResource: generic UI strings (new/edit/delete/save/cancel/loading/empty/
  actions/confirm) → Persian; text-left/right → logical text-start/end
- TemplatesAdmin: all labels, table, modal, statuses, errors → Persian
- FileUploadField, WebsiteSettingsAdmin, FileManager → Persian
- layout: ms-auto logical prop (NodesTable/RenderQueue/AiContentStudio already
  i18n with Persian values)

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

src/app/[locale]/admin/layout.tsx

@@ -56,7 +56,7 @@ export default async function AdminLayout({
           ))}
           <a
             href="/dashboard"
-            className="ml-auto text-xs text-gray-500 transition-colors hover:text-gray-300"
+            className="ms-auto text-xs text-gray-500 transition-colors hover:text-gray-300"
           >
             {t("backToDashboard")}
           </a>