fix(loyalty): rename enrollment-success CTA from "continue shopping" to "back to home"

The loyalty storefront is a registration / wallet endpoint, not a
catalog — there's nothing to continue shopping toward. The button
already navigates to {{ base_url }} (the homepage), so the
destination was correct; only the wording was wrong.

Rename the i18n key continue_shopping -> back_to_home in
loyalty/enroll-success.html and all four locale files (en/fr/de/lb):

  EN: "Continue Shopping"        -> "Back to Home"
  FR: "Continuer mes achats"     -> "Retour à l'accueil"
  DE: "Weiter einkaufen"         -> "Zurück zur Startseite"
  LB: "Weider akafen"            -> "Zréck op d'Haaptsäit"

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app/modules/loyalty/locales/de.json

@@ -134,7 +134,7 @@
             "step_balance": "Prüfen Sie Ihren Kontostand online oder in der App",
             "step_redeem": "Lösen Sie Punkte gegen Prämien an allen unseren Standorten ein",
             "view_dashboard": "Mein Treue-Dashboard anzeigen",
-            "continue_shopping": "Weiter einkaufen"
+            "back_to_home": "Zurück zur Startseite"
         },
         "already_enrolled_title": "Sie sind bereits Mitglied!",
         "cross_location_message": "Ihre Karte gilt an allen unseren Standorten:",

app/modules/loyalty/locales/en.json

@@ -134,7 +134,7 @@
             "step_balance": "Check your balance online or in the app",
             "step_redeem": "Redeem points for rewards at any of our locations",
             "view_dashboard": "View My Loyalty Dashboard",
-            "continue_shopping": "Continue Shopping"
+            "back_to_home": "Back to Home"
         },
         "already_enrolled_title": "You're already a member!",
         "cross_location_message": "Your card works at all our locations:",

app/modules/loyalty/locales/fr.json

@@ -134,7 +134,7 @@
             "step_balance": "Consultez votre solde en ligne ou dans l'application",
             "step_redeem": "Échangez vos points contre des récompenses dans tous nos points de vente",
             "view_dashboard": "Voir mon tableau de bord fidélité",
-            "continue_shopping": "Continuer mes achats"
+            "back_to_home": "Retour à l'accueil"
         },
         "already_enrolled_title": "Vous êtes déjà membre !",
         "cross_location_message": "Votre carte est valable dans tous nos points de vente :",

app/modules/loyalty/locales/lb.json

@@ -134,7 +134,7 @@
             "step_balance": "Préift Äre Kontostand online oder an der App",
             "step_redeem": "Léist Punkten géint Belounungen an all eise Standuerter an",
             "view_dashboard": "Mäin Treie-Dashboard kucken",
-            "continue_shopping": "Weider akafen"
+            "back_to_home": "Zréck op d'Haaptsäit"
         },
         "already_enrolled_title": "Dir sidd schonn Member!",
         "cross_location_message": "Är Kaart gëllt an all eise Standuerter:",

app/modules/loyalty/templates/loyalty/storefront/enroll-success.html

@@ -115,7 +115,7 @@
             </a>
             <a href="{{ base_url }}"
                class="block w-full py-3 px-4 text-gray-700 dark:text-gray-300 font-medium rounded-lg border border-gray-300 dark:border-gray-600 hover:bg-gray-50 dark:hover:bg-gray-700 transition-colors text-center">
-                {{ _('loyalty.enrollment.success.continue_shopping') }}
+                {{ _('loyalty.enrollment.success.back_to_home') }}
             </a>
         </div>
     </div>