refactor(mini-program): handleShortNovelEvent 改为对话流追加消息

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

@@ -1693,33 +1693,45 @@ const handleShortNovelEvent = (event) => {
 
   switch (type) {
     case 'status':
+      // 仅更新加载提示，不追加独立消息
       generationStatus.value = payload.stage || 'processing'
       break
     case 'clarification_card':
-      clarificationCard.value = payload.card || null
-      viewState.value = 'clarifying'
+      addResultMessage({ role: 'assistant', kind: 'card', card: payload.card || null })
+      generationStatus.value = 'idle'
       break
     case 'outline_created':
-      novelOutline.value = payload.outline || null
-      viewState.value = 'outlining'
+      addResultMessage({ role: 'assistant', kind: 'outline', outline: payload.outline || null })
+      generationStatus.value = 'idle'
       break
     case 'novel_start':
-      streamContent.value = ''
-      novelFullText.value = ''
-      viewState.value = 'novel-generating'
+      addResultMessage({ role: 'assistant', kind: 'novel', content: '', pending: true })
+      generationStatus.value = 'streaming'
       break
-    case 'novel_delta':
-      streamContent.value += payload.delta || ''
+    case 'novel_delta': {
+      // 往最后一条 novel 消息追加 delta
+      const lastNovel = [...resultMessages.value].reverse().find(m => m.kind === 'novel' && m.pending)
+      if (lastNovel) {
+        lastNovel.content += payload.delta || ''
+      }
+      keepResultAtBottom()
       break
-    case 'novel_done':
-      novelFullText.value = payload.full_text || streamContent.value
-      streamContent.value = novelFullText.value
+    }
+    case 'novel_done': {
+      // 标记最后一条 novel 消息完成
+      const lastNovel = [...resultMessages.value].reverse().find(m => m.kind === 'novel')
+      if (lastNovel) {
+        if (payload.full_text) lastNovel.content = payload.full_text
+        lastNovel.pending = false
+      }
       scriptId.value = payload.scriptId || ''
       conversationId.value = payload.conversationId || ''
       currentVersionMessageId.value = payload.currentVersionMessageId || ''
-      viewState.value = 'result'
-      viewMode.value = 'chat'
+      generationPhase.value = 'done'
+      generationStatus.value = 'idle'
+      persistResultMessages()
       break
+    }
     case 'error':
       // 识别每日限制错误，保存 session_id 供"继续创作"使用
       if (payload.code === 'DAILY_GENERATION_IN_PROGRESS' && session_id) {
@@ -1727,6 +1739,7 @@ const handleShortNovelEvent = (event) => {
         markGenerationFailed(payload.message || '今天已有未完成的创作，可点击继续创作恢复')
       } else {
         markGenerationFailed(payload.message || '生成失败')
+        addResultMessage({ role: 'assistant', kind: 'text', content: payload.message || '生成失败', failed: true })
       }
       break
   }