Function saveAIChatMessages

src/stores/aiChat.ts:1313–1343

(
    aiChatId: string | null,
    userMsg: ChatMessage,
    aiMsg: ChatMessage,
    tokenUsage?: TokenUsage
  )

  }

  async function saveAIChatMessages(
    aiChatId: string | null,
    userMsg: ChatMessage,
    aiMsg: ChatMessage,
    tokenUsage?: TokenUsage
  ): Promise<{ userMessage: ChatMessage; assistantMessage: ChatMessage } | null> {
    try {
      if (!aiChatId) {
        return null
      }

      const savedUserMessage = await useAIService().addMessage(aiChatId, 'user', userMsg.content)
      const serializableContentBlocks = toSerializableContentBlocks(aiMsg.contentBlocks)
      const savedAssistantMessage = await useAIService().addMessage(
        aiChatId,
        'assistant',
        aiMsg.content,
        undefined,
        undefined,
        serializableContentBlocks,
        tokenUsage
      )
      return {
        userMessage: toRuntimeMessage(savedUserMessage),
        assistantMessage: toRuntimeMessage(savedAssistantMessage),
      }
    } catch (error) {
      console.error('[AI] 保存对话失败：', error)
      return null
    }
  }

  async function buildReadySerializablePreprocessConfig() {
    const preprocessConfig = settingsStore.aiPreprocessConfig