change icon etx

sidepanel.js

@@ -9,9 +9,28 @@ const sendCustomBtn = document.getElementById('sendCustom');
 const statusBadge = document.getElementById('statusBadge');
 const resultsArea = document.getElementById('results');
 
+// Collapsible logic
+const toggleConfig = document.getElementById('toggleConfig');
+const configContent = document.getElementById('configContent');
+const configChevron = document.getElementById('configChevron');
+
+toggleConfig.addEventListener('click', () => {
+  const isHidden = configContent.classList.toggle('hidden');
+  configChevron.classList.toggle('rotate-180', !isHidden);
+});
+
 // Load settings on startup
 chrome.storage.local.get(['geminiApiKey', 'googleScriptUrl'], (data) => {
-  if (data.geminiApiKey) apiKeyInput.value = data.geminiApiKey;
+  if (data.geminiApiKey) {
+    apiKeyInput.value = data.geminiApiKey;
+    // Fold by default if already configured
+    configContent.classList.add('hidden');
+    configChevron.classList.remove('rotate-180');
+  } else {
+    // Expand if no API key
+    configContent.classList.remove('hidden');
+    configChevron.classList.add('rotate-180');
+  }
   if (data.googleScriptUrl) scriptUrlInput.value = data.googleScriptUrl;
 });
 
@@ -92,7 +111,7 @@ Title: ${pageData.title}`;
 }
 
 async function callGemini(apiKey, systemPrompt, contextText, userPrompt) {
-  const url = `https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=${apiKey}`;
+  const url = `https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash-lite:generateContent?key=${apiKey}`;
   
   const response = await fetch(url, {
     method: 'POST',