fix(loyalty): use correct no-results text in PIN staff autocomplete

PIN create/edit modals were showing "Customer not found" (terminal
message) when no staff members matched. Now shows "No staff members
found" with a proper locale key.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/modules/loyalty/locales/de.json

@@ -358,7 +358,8 @@
       "cancel": "Abbrechen",
       "read_only_notice": "PINs sind in der Admin-Ansicht schreibgeschützt",
       "save_changes": "Speichern",
-      "unlock": "Entsperren"
+      "unlock": "Entsperren",
+      "no_staff_found": "Keine Mitarbeiter gefunden"
     },
     "program_form": {
       "program_type": "Programmtyp",

app/modules/loyalty/locales/en.json

@@ -358,7 +358,8 @@
       "cancel": "Cancel",
       "read_only_notice": "PINs are read-only in admin view",
       "save_changes": "Save Changes",
-      "unlock": "Unlock"
+      "unlock": "Unlock",
+      "no_staff_found": "No staff members found"
     },
     "program_form": {
       "program_type": "Program Type",

app/modules/loyalty/locales/fr.json

@@ -358,7 +358,8 @@
       "cancel": "Annuler",
       "read_only_notice": "Les PINs sont en lecture seule en mode admin",
       "save_changes": "Enregistrer",
-      "unlock": "Déverrouiller"
+      "unlock": "Déverrouiller",
+      "no_staff_found": "Aucun membre du personnel trouvé"
     },
     "program_form": {
       "program_type": "Type de programme",

app/modules/loyalty/locales/lb.json

@@ -358,7 +358,8 @@
       "cancel": "Ofbriechen",
       "read_only_notice": "PINen sinn an der Admin-Usiicht nëmmen ze liesen",
       "save_changes": "Späicheren",
-      "unlock": "Entspären"
+      "unlock": "Entspären",
+      "no_staff_found": "Keng Mataarbechter fonnt"
     },
     "program_form": {
       "program_type": "Programmtyp",

app/modules/loyalty/templates/loyalty/shared/pins-list.html

@@ -146,8 +146,8 @@
                     secondary_field='email',
                     placeholder=_('loyalty.shared.pins.pin_name'),
                     min_chars=1,
-                    no_results_text=_('loyalty.store.terminal.customer_not_found'),
-                    loading_text=_('loyalty.store.terminal.looking_up')
+                    no_results_text=_('loyalty.shared.pins.no_staff_found'),
+                    loading_text=_('loyalty.common.loading')
                 ) }}
             </div>
             <div>
@@ -208,8 +208,8 @@
                     secondary_field='email',
                     placeholder=_('loyalty.shared.pins.pin_name'),
                     min_chars=1,
-                    no_results_text=_('loyalty.store.terminal.customer_not_found'),
-                    loading_text=_('loyalty.store.terminal.looking_up')
+                    no_results_text=_('loyalty.shared.pins.no_staff_found'),
+                    loading_text=_('loyalty.common.loading')
                 ) }}
             </div>
             <div>