* feat(web): reveal a clipped sidebar session title on hover
A session title wider than its sidebar row is clipped with an ellipsis, so a
long parent title hides the `(1)` that distinguishes its fork. Hovering the row
now scrolls the title to its far edge and returns it to the start when the
pointer leaves. The title stays an `overflow: hidden` scrollport, so nothing
reflows and no scrollbar appears; `scroll-behavior: smooth` supplies the motion
(reduced motion keeps the jump), and the hovered row clips instead of
ellipsizing because a scrolled box still paints the ellipsis over the revealed
characters.
Covered by the row component spec, the stylesheet contract spec, and a new
keyless Chromium scenario that hovers a seeded clipped row in the assembled
application and asserts the reached scroll extent.
* fix(web): return the revealed session title in one step
Review follow-up on the hover reveal:
- Return the title to its start with `scrollTo({ behavior: 'instant' })` instead
of a smooth scroll. A smooth return carried the resting ellipsis and the
narrowing cell over the travelling text for its whole duration.
- Scope `scroll-behavior: smooth` to `.sessionRow .title` so Workspace rows are
untouched, and fold the reduced-motion reset into the file's existing block.
- Guard the hover-only `text-overflow: clip` with `@media (hover: hover)`: a
touch tap latches `:hover` after the title has already returned, which would
otherwise strand that row without its ellipsis.
- Pin the contract in the browser scenario: computed `scroll-behavior` is
`smooth` by default and `auto` under reduced motion, and the return lands
inside one step. Add the unit case for the explicit instant return.
DeepSeek Harness
English | 中文
DeepSeek Harness (dsh) is an open-source agent harness developed by DeepSeek AI.
It is built on an everything-is-a-plugin architecture and powered by Cordis, whose design is described in A Programming Paradigm for Spatiotemporal Composability.
Documentation: https://deepseek-harness.github.io/deepseek-harness/
Developer preview
DeepSeek Harness is in developer preview and iterating rapidly. THERE WILL BE COMPATIBILITY-BREAKING CHANGES.
Review the safety notice before running the project.
Run
Run from npm
Install Node.js, then run:
npx @deepseek-ai/dsh web
The command starts the Web UI at http://127.0.0.1:3080 by default and opens it in the default browser for a local launch. An SSH launch only prints the host URL because the SSH client or editor owns the local forwarded address. Pass --no-open to run the server without opening a browser. See Web UI guide.
Run from source
To run from a repository checkout:
git clone https://github.com/deepseek-ai/deepseek-harness.git
cd deepseek-harness
pnpm install
pnpm run build
pnpm dsh web
pnpm run build prepares the repository artifacts. pnpm dsh web uses those built artifacts without rebuilding.
Community and support
- Submit feedback or bug reports through GitHub Discussions.
- Add the
dsh-plugintopic to your plugin repository for discoverability. - Join DeepSeek Harness Discord community.
Contributing
See CONTRIBUTING.md.
Development
Start with the development guide and architecture documentation.
For agents, follow AGENTS.md.
Citation
@misc{deepseek-harness2026,
title={DeepSeek Harness: Everything is a Plugin},
author={DeepSeek-AI},
year={2026},
publisher={GitHub},
howpublished={\url{https://github.com/deepseek-ai/deepseek-harness}},
}
License
Third-party dependencies and their licenses are disclosed in THIRD_PARTY_NOTICES.md.