i18n(loyalty): translate terminal_devices block to FR/DE/LB

Replaces the EN placeholders that were seeded with the feature with
proper FR, DE and LB translations. Same scope: terminal_devices.* and
the menu.terminal_devices label.

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

app/modules/loyalty/locales/de.json

@@ -84,7 +84,7 @@
         "wallet_debug": "Wallet Debug",
         "staff_pins": "Mitarbeiter-PINs",
         "transactions": "Transaktionen",
-        "terminal_devices": "Terminal Devices"
+        "terminal_devices": "POS-Terminals"
     },
     "permissions": {
         "view_programs": "Programme anzeigen",
@@ -912,48 +912,48 @@
         "pin_unlock_error": "PIN konnte nicht entsperrt werden"
     },
     "terminal_devices": {
-        "title": "Terminal Devices",
-        "subtitle": "Pair POS tablets to each store. The setup QR is shown only once at pairing time.",
-        "admin_subtitle": "Pair POS tablets on behalf of this merchant.",
-        "loading": "Loading devices...",
-        "error_loading": "Failed to load devices",
-        "no_devices": "No devices paired yet",
-        "show_revoked": "Include revoked",
-        "pair_device": "Pair Tablet",
-        "pair_hint": "A long-lived setup QR is generated. The tablet scans it once and connects from then on.",
-        "pairing_qr": "Tablet Pairing QR",
-        "qr_warning_title": "Save this now —",
-        "qr_warning_body": "this QR is shown only this time. If you close it before pairing, you will need to revoke and pair again.",
-        "qr_done": "I've paired the tablet",
-        "show_payload": "Show raw payload",
-        "label_field": "Device label",
-        "label_placeholder": "e.g. Counter 1",
-        "store_field": "Store",
-        "select_store": "Select store...",
-        "revoke": "Revoke",
-        "revoke_title": "Revoke device?",
-        "confirm_revoke": "Revoke device '{label}'? Its tablet will stop working immediately.",
-        "delete_title": "Delete device?",
-        "confirm_delete": "Permanently delete device '{label}'? This cannot be undone.",
-        "col_label": "Label",
-        "col_store": "Store",
+        "title": "POS-Terminals",
+        "subtitle": "Verbinde POS-Tablets mit jeder Filiale. Der Setup-QR wird nur einmal beim Pairing angezeigt.",
+        "admin_subtitle": "Verbinde POS-Tablets im Auftrag dieses Händlers.",
+        "loading": "Terminals werden geladen...",
+        "error_loading": "Terminals konnten nicht geladen werden",
+        "no_devices": "Noch keine Terminals verbunden",
+        "show_revoked": "Widerrufene anzeigen",
+        "pair_device": "Tablet verbinden",
+        "pair_hint": "Ein langlebiger Setup-QR wird erzeugt. Das Tablet scannt ihn einmal und verbindet sich danach automatisch.",
+        "pairing_qr": "Tablet-Pairing-QR",
+        "qr_warning_title": "Jetzt speichern —",
+        "qr_warning_body": "dieser QR wird nur einmal angezeigt. Wenn du ihn vor dem Pairing schließt, musst du widerrufen und neu verbinden.",
+        "qr_done": "Tablet verbunden",
+        "show_payload": "Rohinhalt anzeigen",
+        "label_field": "Geräte-Bezeichnung",
+        "label_placeholder": "z. B. Kasse 1",
+        "store_field": "Filiale",
+        "select_store": "Filiale auswählen...",
+        "revoke": "Widerrufen",
+        "revoke_title": "Terminal widerrufen?",
+        "confirm_revoke": "Terminal „{label}“ widerrufen? Das Tablet funktioniert sofort nicht mehr.",
+        "delete_title": "Terminal löschen?",
+        "confirm_delete": "Terminal „{label}“ endgültig löschen? Dies kann nicht rückgängig gemacht werden.",
+        "col_label": "Bezeichnung",
+        "col_store": "Filiale",
         "col_status": "Status",
-        "col_last_seen": "Last seen",
-        "col_expires": "Expires",
-        "col_actions": "Actions",
-        "status_active": "Active",
-        "status_revoked": "Revoked",
-        "status_expired": "Expired",
+        "col_last_seen": "Zuletzt gesehen",
+        "col_expires": "Läuft ab",
+        "col_actions": "Aktionen",
+        "status_active": "Aktiv",
+        "status_revoked": "Widerrufen",
+        "status_expired": "Abgelaufen",
         "toasts": {
-            "paired": "Tablet paired — show the QR to the device",
-            "revoked": "Device revoked",
-            "deleted": "Device deleted"
+            "paired": "Tablet verbunden — zeige den QR am Gerät",
+            "revoked": "Terminal widerrufen",
+            "deleted": "Terminal gelöscht"
         },
         "errors": {
-            "store_required": "Please select a store",
-            "pair_failed": "Failed to pair device",
-            "revoke_failed": "Failed to revoke device",
-            "delete_failed": "Failed to delete device"
+            "store_required": "Bitte eine Filiale auswählen",
+            "pair_failed": "Verbinden fehlgeschlagen",
+            "revoke_failed": "Widerruf fehlgeschlagen",
+            "delete_failed": "Löschen fehlgeschlagen"
         }
     },
     "errors": {