fix: currentScriptContent 章节字段全空时用 plotJson.fullContent 作为 fallback

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

@@ -619,20 +619,33 @@ const resultHasScriptReplies = computed(() => {
 const currentScriptContent = computed(() => {
   const targetId = selectedVersionMessageId.value || currentVersionMessageId.value
   const targetMessage = messages.value.find(m => m.id === targetId && m.type === 'script')
+  let result
   if (!targetMessage || !targetMessage.metadata) {
-    return {
+    result = {
       title: currentResult.value?.title || '',
       plotIntro: currentResult.value?.plotIntro || '',
       plotTurning: currentResult.value?.plotTurning || '',
       plotClimax: currentResult.value?.plotClimax || '',
       plotEnding: currentResult.value?.plotEnding || ''
     }
+  } else {
+    try {
+      result = JSON.parse(targetMessage.metadata)
+    } catch (e) {
+      result = { title: '', plotIntro: targetMessage.metadata || '' }
+    }
   }
-  try {
-    return JSON.parse(targetMessage.metadata)
-  } catch (e) {
-    return { title: '', plotIntro: targetMessage.metadata || '' }
+
+  // 章节字段全空时，用 plotJson.fullContent 作为 fallback
+  const hasChapter = result.plotIntro || result.plotTurning || result.plotClimax || result.plotEnding
+  if (!hasChapter) {
+    const fullContent = currentResult.value?.plotJson?.fullContent || ''
+    if (fullContent) {
+      result.plotIntro = fullContent
+    }
   }
+
+  return result
 })
 
 const displayMessages = computed(() => messages.value)