fix(i18n): complete translations for production launch and fix CMS store context

- Replace CMS custom get_store_context() with core utility (same fix as loyalty)
- Add 85 missing translation keys across fr/de/lb for core, tenancy, messaging,
  customers, and loyalty modules
- Convert 21 client-side $t() calls to server-side _() in 9 loyalty templates
- Fix 3 broken translation keys in store/cards.html

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/modules/messaging/locales/lb.json

@@ -35,7 +35,16 @@
         "failed_to_delete_notification": "Failed to delete notification",
         "failed_to_load_alerts": "Failed to load alerts",
         "alert_resolved_successfully": "Alert resolved successfully",
-        "failed_to_resolve_alert": "Failed to resolve alert"
+        "failed_to_resolve_alert": "Failed to resolve alert",
+        "no_template_for_language": "Keng Virlag fir {language} - erstellt eng andeems Dir späichert",
+        "failed_to_save_template": "Virlag konnt net gespäichert ginn",
+        "test_email_sent": "Test-E-Mail u {email} geschéckt"
+    },
+    "confirmations": {
+        "delete_notification": "Sidd Dir sécher datt Dir dës Notifikatioun läsche wëllt?",
+        "close_conversation": "Dës Conversatioun zoumaachen?",
+        "close_conversation_admin": "Sidd Dir sécher datt Dir dës Conversatioun zoumaache wëllt?",
+        "delete_customization": "Sidd Dir sécher datt Dir Är Personnaliséierung läschen an zum Plattform-Standard zréckgoe wëllt?"
     },
     "features": {
         "messaging_basic": {
@@ -59,7 +68,55 @@
         "account_settings": "Kont-Astellungen",
         "messages": "Messagen",
         "notifications": "Notifikatiounen",
-        "email_templates": "E-Mail-Virlagen"
+        "email_templates": "E-Mail-Virlagen",
+        "email_logs": "E-Mail-Protokoller"
+    },
+    "email_logs": {
+        "title": "E-Mail-Protokoller",
+        "subtitle": "All E-Mailen iwwerpréiwen déi iwwer d'Plattform geschéckt goufen",
+        "recipient": "Empfänger",
+        "subject": "Sujet",
+        "template": "Virlag",
+        "status": "Status",
+        "store": "Buttek",
+        "date": "Datum",
+        "sent_at": "Geschéckt um",
+        "provider": "Ubidder",
+        "from": "Vun",
+        "to": "Un",
+        "reply_to": "Äntwert un",
+        "related_entity": "Verbonnen Entitéit",
+        "error_message": "Feelernotiz",
+        "retry_count": "Widderholungsversich",
+        "actions": "Aktiounen",
+        "view_detail": "Detailer kucken",
+        "email_detail": "E-Mail-Detail",
+        "html_preview": "HTML-Virschau",
+        "text_preview": "Text-Virschau",
+        "metadata": "Metadaten",
+        "content": "Inhalt",
+        "status_timeline": "Status-Verlaf",
+        "filter_by_recipient": "No Empfänger-E-Mail sichen...",
+        "filter_by_status": "All Statussen",
+        "filter_by_template": "All Virlagen",
+        "filter_by_store": "All Butteker",
+        "date_from": "Vun Datum",
+        "date_to": "Bis Datum",
+        "apply_filters": "Uwenden",
+        "reset_filters": "Zrécksetzen",
+        "total_sent": "Total geschéckt",
+        "total_failed": "Feelgeschloen",
+        "total_pending": "Aussteesend",
+        "total_delivered": "Zougestallt",
+        "no_logs": "Keng E-Mail-Protokoller fonnt",
+        "status_sent": "Geschéckt",
+        "status_failed": "Feelgeschloen",
+        "status_pending": "Aussteesend",
+        "status_delivered": "Zougestallt",
+        "status_bounced": "Zréckgeschéckt",
+        "status_opened": "Opgemaach",
+        "status_clicked": "Geklickt",
+        "retention_note": "E-Mail-Inhalt gëtt 90 Deeg gespäichert. Metadaten ginn onbegrenzt gehalen."
     },
     "permissions": {
         "view_messages": "Messagen kucken",