主要更新
- 修复思维导图、流程图及架构图在同步和新建笔记时丢失未保存编辑的问题。感谢 @sivdead（#742）；修复 [#737]。
- 修复信息图同步时的草稿与输入丢失问题，并在空闲时正确显示远端更新。
- 减少备份过程中的数据库读取，保留一致性检查，并改善桌面备份网络故障诊断。
- 减少分页、导出、同步和任务历史轮询中的重复数据库计数。服务端升级会执行迁移 0084，一次性回填任务计数。
关联 Issue：#745
Key Changes
- Preserve unsaved mind-map, flowchart and architecture edits during synchronization, including new-note creation. Thanks @sivdead (#742); fixes [#737].
- Preserve infographic drafts and active input during synchronization, and refresh remote changes when the editor is idle.
- Reduce database reads during backups while preserving consistency checks, and improve desktop backup network diagnostics.
- Reduce repeated database counts during pagination, exports, synchronization and task-history polling. Upgrading the server applies migration 0084 with a one-time task-count backfill.
Related Issue: [#745]
