Frontend: trim message text in all bubble renderers

wwwroot/js/history.js

@@ -110,7 +110,7 @@ async function loadLatestArchive() {
         switch (msg.type) {
           case 'text':
             div.className = msg.role === 'user' ? 'msg user archived' : 'msg assistant archived';
-            div.textContent = msg.content;
+            div.textContent = (msg.content || '').trim();
             if (msg.role === 'user' && msg.attachmentCount > 0) {
               let names = [];
               try { if (msg.attachmentNames) names = JSON.parse(msg.attachmentNames); } catch {}
@@ -137,7 +137,7 @@ async function loadLatestArchive() {
           case 'error':
             div.className = 'msg system-info archived';
             div.style.color = '#ff6b6b';
-            div.textContent = msg.content;
+            div.textContent = (msg.content || '').trim();
             break;
           default:
             continue;

wwwroot/js/ui.js

@@ -25,7 +25,7 @@ function addUserBubble(text, streamed = false) {
   const div = document.createElement('div');
   div.className = 'msg user';
   if (streamed) div.classList.add('streamed');
-  div.textContent = text;
+  div.textContent = (text || '').trim();
   chatEl().appendChild(div);
   scrollDown();
 }
@@ -33,7 +33,7 @@ function addUserBubble(text, streamed = false) {
 function addAssistantBubble(text) {
   const div = document.createElement('div');
   div.className = 'msg assistant';
-  div.textContent = text;
+  div.textContent = (text || '').trim();
   chatEl().appendChild(div);
   scrollDown();
   return div;
@@ -44,7 +44,7 @@ function addErrorBubble(text, streamed = false) {
   div.className = 'msg system-info';
   if (streamed) div.classList.add('streamed');
   div.style.color = '#ff6b6b';
-  div.textContent = text;
+  div.textContent = (text || '').trim();
   chatEl().appendChild(div);
   scrollDown();
 }