--- a/src/chat.js	Thu Jul 24 22:14:49 2025 -0600
+++ b/src/chat.js	Thu Jul 24 22:47:48 2025 -0600
@@ -42,7 +42,7 @@
 
 function updateAi(html) {
 	hideWaitingAiIcon();
-	document.querySelector('div[messages]').innerHTML = html;
+	document.querySelector('div[messages]').insertAdjacentHTML('beforeend',html);
 	handleMarkdown();
 	document.querySelector('textarea').focus();
 	window.scrollTo(0, document.body.scrollHeight);

--- a/src/lib/Chat.luan	Thu Jul 24 22:14:49 2025 -0600
+++ b/src/lib/Chat.luan	Thu Jul 24 22:47:48 2025 -0600
@@ -70,15 +70,14 @@
 	end
 
 	function chat.ask(input)
-		local ai_thread = chat.ai.ask(chat.ai_thread,input)
-		if chat.ai_thread ~= ai_thread then
-			run_in_transaction( function()
-				chat = chat.reload()
-				chat.ai_thread = ai_thread
-				chat.save()
-			end )
-		end
-		return `chat.ai.output_messages_html(ai_thread)`
+		local old_thread = chat.ai_thread
+		local ai_thread = chat.ai.ask(old_thread,input)
+		run_in_transaction( function()
+			chat = chat.reload()
+			chat.ai_thread = ai_thread
+			chat.save()
+		end )
+		return `chat.ai.output_messages_html(ai_thread,old_thread)`
 	end
 
 	return chat

--- a/src/lib/ai/claude/Chat.luan	Thu Jul 24 22:14:49 2025 -0600
+++ b/src/lib/ai/claude/Chat.luan	Thu Jul 24 22:47:48 2025 -0600
@@ -27,13 +27,22 @@
 	%><%=system_prompt%><%
 end
 
-function Chat.output_messages_html(thread)
+function Chat.output_messages_html(thread,old_thread)
 	if thread == nil then
 		return
 	end
 	thread = json_parse(thread)
 	local messages = thread.messages or error
-	for _, message in ipairs(messages) do
+	local n = 0
+	if old_thread ~= nil then
+		old_thread = json_parse(old_thread)
+		local old_messages = old_thread.messages or error
+		n = #old_messages
+	end
+	for i, message in ipairs(messages) do
+		if i <= n then
+			continue
+		end
 		local role = message.role or error()
 		local who
 		if role=="assistant" then
@@ -96,7 +105,7 @@
 	messages[#messages+1] = {
 		role = "assistant"
 		content = [[
-uhuh
+hello
 ]]
 	}
 	if true then