fix: 用户消息不显示名字仅保留头像

src/pages/chat/components/messages/MessageItem.tsx

@@ -128,20 +128,6 @@ export default function MessageItem(props: {
       ) : (
         <div style={{ display: 'flex', gap: 12, alignItems: 'flex-start', justifyContent: 'flex-end' }}>
           <div style={{ flex: 1, minWidth: 0, maxWidth: '78%', display: 'flex', flexDirection: 'column', alignItems: 'flex-end' }}>
-            <div style={{
-              display: 'flex',
-              alignItems: 'center',
-              gap: 8,
-              marginBottom: 6
-            }}>
-              <span style={{
-                fontSize: 12,
-                fontWeight: 400,
-                color: 'var(--color-text-secondary)'
-              }}>
-                我
-              </span>
-            </div>
             <div className={`bubble ${bubbleRole}`}>
               {message.content.includes('![image](') ? (
                 <Markdown>{message.content}</Markdown>