fix(hermes): save intro message to history and prevent regeneration

- Only generate intro message when no conversation history exists
- Save generated intro to chatHistory so it persists across modal opens
- Set up page context when loading existing conversation history
- Prevent intro from being regenerated every time modal opens
- Intro message now properly saved and reused like other messages

src/ui.js

@@ -1242,11 +1242,30 @@ async function openHermesModalNew() {
 		try {
 			const history = loadConversationHistory();
 			if (history && history.length > 0) {
+				// Set up page context for existing conversation
+				const pageContent = extractWebpageContent();
+				const pageTitle = document.title || window.location.hostname;
+				const conversationContextAppend = `
+
+PAGE CONTEXT FOR THIS CONVERSATION:
+You are embedded on the webpage: "${pageTitle}"
+URL: ${window.location.href}
+
+FULL PAGE CONTENT:
+${pageContent}
+
+You have complete knowledge of this page content and can reference any details, names, topics, or information mentioned on this page. Answer questions about the page content accurately and helpfully.`;
+
+				setSystemMessageAppend(conversationContextAppend);
+				
 				// Sync the loaded history with the chat.js module
 				// Clear existing non-system messages and add loaded history
 				const systemMsg = chatHistory.find(msg => msg.role === 'system');
 				chatHistory.length = 0; // Clear array
-				if (systemMsg) chatHistory.push(systemMsg);
+				if (systemMsg) {
+					const { getSystemMessage } = await import('./config.js');
+					chatHistory.push({ role: 'system', content: getSystemMessage() });
+				}
 				chatHistory.push(...history);
 				console.log("Chat history synced with loaded data:", chatHistory.length, "messages");
 				console.log("Current chatHistory contents:", chatHistory);
@@ -1471,6 +1490,10 @@ You have complete knowledge of this page content and can reference any details,
 				systemMsg.content = getSystemMessage();
 			}
 			
+			// Add the intro message to chat history so it's not regenerated
+			chatHistory.push({ role: 'assistant', content: response });
+			console.log("Added intro message to chat history");
+			
 			// Add TTS and delete buttons to intro message
 			const messageActions = document.createElement("div");
 			messageActions.style.cssText = `