dsh-composer-extension: A Collaboration Bridge Between Main Chat and Translation Workspace in DeepSeek Harness

What Does It Do?

Composer Extension is a DSH plugin for DeepSeek Harness that links the main chat input with the translation workspace, so material submission, background handoff, and task coordination happen in one place. It solves the separation between prepared material and instructions, the lack of context for tasks, and the disconnect between background work and the chat: you prepare source material in the workspace, describe the requirement in the main chat, and send both together, after which the main model passes consolidated background and translation requirements to the translation model. It is maintained by Mulibaixi under the MIT license and written in TypeScript.

Core Features

• Linked submission: connects the main chat input with the translation workspace so instructions and prepared material are submitted together.
• Supplementary information: gives the main model an interface to deliver consolidated background information and translation requirements to the translation model.
• Key-stage notices: pushes messages that need main-model attention at integrated analysis and document task stages.
• Stop and stale-task handling: avoids waking a user-stopped main model for late task messages and prevents stale notices from being treated as current tasks.
• Patch reuse: on Windows Desktop, bundled patches are matched by target-module fingerprints, so unchanged modules need no extension update just for a new version number.

How to Use This Plugin?

After enabling it in DSH, prepare source material in the translation workspace, describe the translation, refinement, or review requirement in the main chat, and submit both together; the main model then hands the consolidated background and requirements to the translation model. The translation plugin owns execution, session history, translation versions, and memory assets, while the Composer extension handles material handoffs and task coordination. The translation model cannot yet proactively ask the main model for more information, so interactions start from specific user actions; linked submission requires submissions protocol 1, DSH 0.2.0-rc.2 or later, a companion translation plugin build, and configured models.

How to Troubleshoot This Plugin?

If linked submission does not take effect, first check that the DSH version provides the main-session interfaces the extension requires, then confirm the companion translation plugin is a build using content protocol 3 and task-phase protocol 2. On Windows Desktop, if the patch is not active, fully exit and reopen DSH as described in the official instructions so the patch loads on restart; when the relevant modules are unchanged by an update, the patch can be reused without updating the extension just for a version change.