Function bindDisplayedBuffer

src/stores/aiChat.ts:377–393

* 将当前 UI 绑定到某个 conversation buffer。 * 这里只切换显示，不会影响后台正在推理的 buffer。

(state: AIChatSessionState, bufferKey: string)

   * 这里只切换显示，不会影响后台正在推理的 buffer。
   */
  function bindDisplayedBuffer(state: AIChatSessionState, bufferKey: string): void {
    // 保存当前对话的 token 使用量
    const currentKey = state.currentAIChatId ?? DRAFT_AI_CHAT_KEY
    const currentBuffer = state.aiChatBuffers[currentKey]
    if (currentBuffer) {
      currentBuffer.sessionTokenUsage = { ...state.sessionTokenUsage }
    }

    const buffer = getOrCreateBuffer(state, bufferKey)
    state.currentAIChatId = bufferKey === DRAFT_AI_CHAT_KEY ? null : bufferKey
    state.messages = buffer.messages
    state.sourceMessages = buffer.sourceMessages
    state.currentKeywords = buffer.currentKeywords
    state.selectedAssistantId = buffer.assistantId
    state.sessionTokenUsage = buffer.sessionTokenUsage ? { ...buffer.sessionTokenUsage } : createEmptyTokenUsage()
    state.agentStatus = null
  }

  function renameBufferKey(state: AIChatSessionState, fromKey: string, toKey: string): AIChatBuffer {
    const buffer = getOrCreateBuffer(state, fromKey)