fix scroll action

src/components/ConversationView.vue

@@ -161,7 +161,11 @@ const translateMessage = async (sender: 'me' | 'partner', retranslateId?: string
 
   isTranslating.value = true;
   currentStreamingMessageId.value = messageId;
-  await scrollToBottom();
+  
+  // 只有新消息才自动滚动到底部，重新翻译不滚动
+  if (!retranslateId) {
+    await scrollToBottom();
+  }
 
   // 2. Prepare Context
   const historyLimit = 10;
@@ -224,7 +228,11 @@ const translateMessage = async (sender: 'me' | 'partner', retranslateId?: string
   } finally {
     isTranslating.value = false;
     currentStreamingMessageId.value = null;
-    scrollToBottom();
+    
+    // 只有新消息才滚动到底部
+    if (!retranslateId) {
+      scrollToBottom();
+    }
   }
 };
 
@@ -428,7 +436,12 @@ const refineMessage = async (messageId: string) => {
   } finally {
     settings.updateChatMessage(activeSession.value.id, messageId, { isRefining: false, evaluation: undefined });
     currentStreamingMessageId.value = null;
-    scrollToBottom();
+    
+    // 只有当润色的是最后一条消息时才滚动到底部
+    const lastMsg = activeSession.value.messages[activeSession.value.messages.length - 1];
+    if (lastMsg && lastMsg.id === messageId) {
+      scrollToBottom();
+    }
   }
 };