Update script1.js

script1.js

@@ -30,6 +30,7 @@ let isRequestInProgress = false;
 let isUserSpeaking = false;
 let requestAbortController = null;
 let firstResponseTextTimestamp = null;
+let lastUserSpeechTimestamp = 0;
 
 // Audio Management
 let currentAudio = null;
@@ -215,6 +216,8 @@ async function sendQueryToAI(query) {
     updateActivityIndicators();
     firstResponseTextTimestamp = null;
     queryStartTime = Date.now();
+    requestAbortController = new AbortController();
+
 
     const cacheKey = generateCacheKey(query, voiceSelectionDropdown.value, conversationHistory, modelSelectionDropdown.value);