Method deleteAttachment

src/main/attachmentHandler.ts:91–103

* 删除附件 * @param localPath 相对路径

(localPath: string)

   * @param localPath 相对路径
   */
  async deleteAttachment(localPath: string): Promise<{ success: boolean; error?: string }> {
    try {
      const fullPath = path.join(this.attachmentsDir, localPath)
      await unlink(fullPath)
      return { success: true }
    } catch (error) {
      console.error('删除附件失败:', error)
      return {
        success: false,
        error: error instanceof Error ? error.message : '删除附件失败'
      }
    }
  }

  /**
   * 移动附件（从temp到正式目录）