turtle1999
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Range observation waited for an active transient scope to leave `active` before it would prove the managed range empty. systemd ends a scope only when it observes the populated-to-empty transition, so a payload killed before the manager placed it in the scope's cgroup leaves the unit active with an empty cgroup forever. `waitForExit()` then polled a unit that could not change, and `LocalSubprocessRuntime.disposeManagedProcesses()` awaited it without bound — teardown hung for any command cancelled immediately after spawn. Each state query now also reads the unit's process count. Once termination was requested and the launcher has exited, a still-active unit reporting no processes is the empty range: the launcher forked every process it will ever fork, so nothing later joins that cgroup. The owner stops the leftover unit so transient units cannot accumulate, and an unreported or `[not set]` count stays unknown and keeps waiting. The race needs a live user-systemd manager, so it stayed dormant wherever the native scope path was unavailable and surfaced once CI routed lanes onto the Blacksmith hosted image, whose runners accept that path. Ten repetitions of `local.spec.ts > disposal kills still-running processes and awaits their exit` in a Linux container with a user manager failed seven times before the change and passed ten times after 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.
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.