fix: 移除澄清卡片提交后的重复用户气泡（label 已在卡片内显示）

mini-program/src/pages/main/ScriptView.vue

@@ -1753,9 +1753,8 @@ const submitClarification = (answer) => {
   const label = option?.label || answer
   if (card) {
     card.submitted = true
-    card.answer = label  // 显示用 label（中文）
+    card.answer = label  // 显示用 label（中文）；答案已在卡片中显示，无需额外用户气泡
   }
-  addResultMessage({ role: 'user', kind: 'text', content: label })
   answeringClarification.value = true
   currentStreamTask.value = followupStream({
     sessionId: novelSessionId.value,