Refactor duplicate handling to allow any authenticated user to check for duplicates, update API methods to require general authentication, and enhance expense fetching with improved error handling and logging.

components/DuplicateNotificationBanner.vue

@@ -41,15 +41,15 @@ const showBanner = ref(true);
 const duplicateCount = ref(0);
 const loading = ref(false);
 
-// Check for duplicates on mount (admin only)
+// Check for duplicates on mount (any authenticated user)
 const checkForDuplicates = async () => {
-  if (!isAdmin() || loading.value) return;
+  if (loading.value) return;
   
   try {
     loading.value = true;
     const response = await $fetch('/api/admin/duplicates/find', {
-      method: 'POST',
-      body: { threshold: 80 }
+      method: 'GET',
+      query: { threshold: 0.8 }
     });
     
     if (response.success && response.data?.duplicateGroups) {
@@ -82,10 +82,8 @@ onMounted(() => {
     }
   }
   
-  // Only check for duplicates if user is admin
-  if (isAdmin()) {
-    // Small delay to let other components load first
-    setTimeout(checkForDuplicates, 2000);
-  }
+  // Check for duplicates for any authenticated user
+  // Small delay to let other components load first
+  setTimeout(checkForDuplicates, 2000);
 });
 </script>