yingjian666/dsh-zh-thinking

dsh-zh-thinking is a host plugin built specifically for DeepSeek Harness (DSH), and its sole target is the DSH runtime — it has no other agent integrations, no Claude Code, Cursor, or Codex support, and exists only to influence DSH's prompt assembly. Its core capability is registering a "think in Simplified Chinese" rule into the system prompt via ctx.systemPrompt.section({ name: 'language:zh-thinking', order: 20, text }), which is evaluated on every assemble() call and placed after the persona section; the plugin depends only on cordis-injected services (ctx.systemPrompt, ctx.logger, ctx.effect) and tears the section down on dispose. Installation on DSH Desktop 4.1+ goes through Settings → Plugins → Install from other sources with the spec github:yingjian666/dsh-zh-thinking plus the "advanced external source" checkbox, or via a downloaded .tgz; other profiles use dsh plugin --profile <name> add github:yingjian666/dsh-zh-thinking, and a full restart is required because host plugins mount at startup.

Typical workflow: a user running DeepSeek's reasoning models through DSH for multi-step tasks such as web scraping, code debugging, or document analysis finds that English tool output causes language drift in the chain-of-thought, and installs this plugin to keep internal reasoning in Simplified Chinese while letting the model decide the final answer's language on its own (so English identifiers, error messages, and code snippets can still appear verbatim). It is also aimed at developers who want a minimal, audit-friendly plugin with no third-party imports and no need to publish to npm. Verification is done by opening a standard-mode session and checking that thought blocks remain in Chinese; under two-stage anchoring presets like "Liangshen Mode", the first anchoring round filters the section out, but it reappears after promotion — that is preset behavior, not a plugin bug.

Dependencies and limits: the plugin has zero third-party imports to dodge the fatal plugin-tree load failure that hits when a locally linked plugin cannot resolve packages like schemastery, and peerDependencies for @deepseek-ai/cordis and @deepseek-ai/dsh-system-prompt are marked optional because DSH Desktop 4.1's compatibility diagnostic resolves them against the application's own module anchors; compatibility evidence is instead supplied by dsh.compatibility.runtime: ">=0.1.1-rc.1 <0.2.0", tested on 0.1.6-alpha.1. Behavior is fixed and zero-config — enabled and forceOutputZh switches exist in code but have no schema or GUI panel. The repo ships node test/kernel-smoke.mjs which loads real cordis + system-prompt from a DSH node_modules path and asserts the section appears in assemble(). License is MIT; the author flags the project as a personal learning attempt with no commitment to ongoing maintenance, and encourages forking lib/index.js if future DSH kernel changes break the section contract.