update

public/customer-view.js

@@ -313,6 +313,8 @@ async function handleSubmit(e) {
     const url = customerId ? `/api/customers/${customerId}` : '/api/customers';
     const method = customerId ? 'PUT' : 'POST';
 
+    if (typeof showSpinner === 'function') showSpinner(customerId ? 'Saving customer & syncing QBO...' : 'Creating customer...');
+
     try {
         const response = await fetch(url, {
             method,
@@ -330,6 +332,8 @@ async function handleSubmit(e) {
     } catch (error) {
         console.error('Error saving customer:', error);
         alert('Network error saving customer.');
+    } finally {
+        if (typeof hideSpinner === 'function') hideSpinner();
     }
 }