Yichen Jiang
ab9689b2ca
* fix(web): bind the right Sidebar before same-commit mount effects A plan review arriving while a global panel was active crashed its opener when the user returned: the frame mounts the Conversation column ahead of the right Sidebar seat, so PlanReviewOpen's mount effect called ctx.sidebarRight.openResource before the seat's passive bindService effect had published the binding. The slot runtime retired the crashed entry for the rest of the page, removing the View full plan link and every later automatic open. Publish the seat binding from a layout effect, which runs before any passive effect of the same commit regardless of tree order. The seat spec mounts a Conversation-column opener ahead of the seat and returns from a global panel; the plan-review Web scenario delivers a review while the Plugins panel is open and expects the preview and the link after the return. Both fail before the fix. * fix(web): open the plan review once the Sidebar seat is mounted Replace the layout-effect binding with an observable: ctx.sidebarRight.mounted publishes the session whose seat is on screen, undefined while a global panel replaces the Conversation. The seat keeps binding from its passive effect. PlanReviewOpen reads the source through a bound hook and opens once a seat is defined, so a review mounting ahead of the seat in the same commit no longer assumes a bound seat and never crashes its entry. The seat spec's opener stand-in now reads `mounted` the way a slot component does; the service spec pins that only real transitions publish, and the PlanReviewOpen spec covers a review that mounts before any seat and opens once the seat binds. * test(web): align the plan-review console tripwires and the seat term The off-screen review case now asserts the reconnect warnings like its siblings and filters crash logs by error level as the other e2e files do. The zh README keeps 席位 for the seat throughout. * test(plan): keep the review props cast at its baseline fingerprint verify-no-unknown-casts counts a modified assertion as new. The two PlanReviewOpen specs now share the unchanged baseline cast through one helper and supply the seat hook as a typed value beside it.
DeepSeek Harness
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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.
pnpm run dev:web builds, serves, and rebuilds client bundles on source edits in one terminal, and make help lists the matching Make targets for Web and Desktop; the guide's application commands section owns the full table.
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.