Fix: Add clearAllSurveys function that was missing

index.html

@@ -1567,7 +1567,28 @@ function confirmClearAll() {
     }
 }
 
-
+async function clearAllSurveys() {
+    try {
+        const response = await fetch('/api/surveys', {
+            method: 'DELETE'
+        });
+        const data = await response.json();
+        
+        if (data.success) {
+            showNotification('All surveys deleted successfully', 'success');
+            loadSurveys();
+            currentSurveyId = null;
+            currentSurvey = null;
+            document.getElementById('takeSurveyTab').style.display = 'none';
+            document.getElementById('analyzeTab').style.display = 'none';
+        } else {
+            showNotification(data.error || 'Failed to clear surveys', 'error');
+        }
+    } catch (e) {
+        console.error('Error clearing surveys:', e);
+        showNotification('Failed to clear surveys', 'error');
+    }
+}
 
 // Notification helper
 function showNotification(message, type = 'info') {