# DeepSeek Harness dsh-v0.1.2-alpha.3 — v0.1.2-alpha.3
- Product: DeepSeek Harness (https://whatsnew.fyi/product/deepseek-harness)
- Vendor: DeepSeek
- Date: 2026-08-31
- Version: dsh-v0.1.2-alpha.3
- Original notes: https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.2-alpha.3
- Permalink: https://whatsnew.fyi/product/deepseek-harness/releases/dsh-v0.1.2-alpha.3
- Labels: Pre-release
What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.
Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.
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- **added** — Right-hand navigation in long conversations now supports preview and jump to all paginated turns, including unloaded ones
- **changed** — Reduce memory use and improve syntax-highlighting responsiveness when rendering long conversations
- **changed** — Improve multilingual wording for permission labels
- **fixed** — Correctly echo and reliably deliver images added or queued while a conversation is running, with support for images in follow-up messages to continuable subagents
- **fixed** — read_image can now detect and read image attachment paths without filename extensions
- **fixed** — Tab key completes highlighted slash commands while the command menu is open
- **fixed** — Fix backend stalls being mistaken for network disconnections
- **fixed** — Fix the Schedule catalog in the conversation header shifting or overflowing in narrow viewports
- **removed** — Remove the optional SQLite Session persistence backend
[中文](#cn-v0.1.2-alpha.3) | [English](#en-v0.1.2-alpha.3)
体验优化
* 长会话右侧导航支持预览和跳转尚未载入的全部分页轮次 @LegGasai
* 改善长会话渲染的内存开销和代码高亮流畅度 @imccyu, @07akioni
* 优化权限标签多语言表达 @ZiyaZhang
问题修复
* 会话运行中追加或排队发送的图片可正确回显并可靠投递；持续子代理的后续消息也支持图片 @CreatixChu
* `read_image` 可根据文件内容识别并读取没有扩展名的图片附件路径 @CreatixChu
* 命令菜单打开时，`Tab` 可补全当前高亮的斜杠命令 @mektpoy
* 修复后端卡顿可能造成网络连接被误判为断开的问题 @imccyu
* 修复会话标题中的定时计划列表在窄视口下偏移或越界的问题 @pku-xht
其他变更
* 移除可选的 SQLite Session 持久化后端；已有内容不会删除，请使用旧版本导出 @tianyicui
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Improvements
* Preview and jump to all paginated turns, including unloaded ones, from the right-hand navigation in long conversations by @LegGasai
* Reduce memory use and improve syntax-highlighting responsiveness when rendering long conversations by @imccyu and @07akioni
* Improve multilingual wording for permission labels by @ZiyaZhang
Bug Fixes
* Correctly echo and reliably deliver images added or queued while a conversation is running; follow-up messages to continuable subagents also support images by @CreatixChu
* Let `read_image` detect and read image attachment paths without filename extensions by @CreatixChu
* Complete highlighted slash commands with `Tab` while the command menu is open by @mektpoy
* Fix backend stalls being mistaken for network disconnections by @imccyu
* Fix the Schedule catalog in the conversation header shifting or overflowing in narrow viewports by @pku-xht
Chores
* Remove the optional SQLite Session persistence backend; existing content is not deleted, so use an older version to export it by @tianyicui
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Full Changelog: https://github.com/deepseek-ai/deepseek-harness/compare/dsh-v0.1.2-alpha.2...dsh-v0.1.2-alpha.3