fix: 澄清卡片已回答用 label 显示，后端 payload 仍用 value

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

@@ -1747,16 +1747,19 @@ const submitClarification = (answer) => {
   if (answeringClarification.value) return
   // 找最后一张未提交的卡片消息（mp-weixin 模板不支持内联箭头函数传 msg，改为自己查找）
   const card = [...resultMessages.value].reverse().find(m => m.kind === 'card' && !m.submitted)
+  // 通过 value 查找选项的 label，用于前端显示；后端 payload 仍用 value（语义化）
+  const option = card?.card?.options?.find(opt => opt.value === answer)
+  const label = option?.label || answer
   if (card) {
     card.submitted = true
-    card.answer = answer
+    card.answer = label  // 显示用 label（中文）
   }
-  addResultMessage({ role: 'user', kind: 'text', content: answer })
+  addResultMessage({ role: 'user', kind: 'text', content: label })
   answeringClarification.value = true
   currentStreamTask.value = followupStream({
     sessionId: novelSessionId.value,
     action: 'answer_clarification',
-    payload: { answer },
+    payload: { answer },  // 后端仍收 value
     onEvent: handleShortNovelEvent,
     onError: (errMsg) => markGenerationFailed(errMsg)
   })