Completa i18n IT/EN/FR/DE/ES su sito pubblico, area autenticata e admin.

Tutte le view marketing, legali, viewer, dashboard e admin usano t(); mailer utente-facing e flash localizzati; admin con LocaleResolver e selettore lingua.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/controllers/admin/passwords_controller.rb

@@ -5,22 +5,22 @@ module Admin
 
     def update
       unless current_admin_account.authenticate(params[:current_password])
-        flash.now[:alert] = "Password attuale non corretta"
+        flash.now[:alert] = t("admin.flash.password_current_incorrect")
         return render :edit, status: :unprocessable_entity
       end
 
       if params[:password].blank? || params[:password].length < 8
-        flash.now[:alert] = "La nuova password deve avere almeno 8 caratteri"
+        flash.now[:alert] = t("admin.flash.password_too_short")
         return render :edit, status: :unprocessable_entity
       end
 
       if params[:password] != params[:password_confirmation]
-        flash.now[:alert] = "Le password non coincidono"
+        flash.now[:alert] = t("admin.flash.password_mismatch")
         return render :edit, status: :unprocessable_entity
       end
 
       if current_admin_account.update(password: params[:password])
-        redirect_to admin_root_path, notice: "Password aggiornata"
+        redirect_to admin_root_path, notice: t("admin.flash.password_updated")
       else
         flash.now[:alert] = current_admin_account.errors.full_messages.to_sentence
         render :edit, status: :unprocessable_entity