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https://github.com/deepseek-ai/deepseek-harness
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f256f3961d
One principle: every fact in the assembled prompt has exactly one owner.
- dsh-system-prompt: merge-extensible AssembleContext on assemble();
a variable(name, provider) registry; {{name}} interpolation in
renderPrompt, strict (unknown/valueless/malformed references throw);
duplicate section and variable names rejected; assembly carries
resolved section text + variables through the assemble waterfall.
- dsh-agent declares AssembleContext.agent; dsh-agent-loop registers
the agent:persona section (order 0 - identity renders before tool
guidance) and the model/cwd variables, and drops its string join:
renderPrompt(assembly) IS the full prompt.
- Tool guidance moves to its owners: descriptions carry per-tool
semantics; sections only cross-call habits (tool:bash exit-code
habit at order 105; read's not-shell nudge). todo/subagent need no
section - their descriptions already carry the contract.
- SubagentProvider.inheritsParentContext (spawn/acp false, fork true);
dsh-tool-subagent derives truthful per-provider wording and resolves
the provider at load (backend must be listed first).
- Example personas shrink to identity + behavior with {{model}} (and
{{cwd}} in the ACP tree); the welcome banner stops enumerating tools.
RFC: docs/rfc/implemented/architecture/2026-07-05-prompt-variables-and-tool-guidance-ownership.md
@deepseek-ai/dsh-subagent-mock
A scripted SubagentProvider for testing the subagent seam without a model or a real child agent — the subagent analog of dsh-llm-replay.
It lets a test drive ctx.subagents and the model-facing dsh-tool-subagent through the real cordis Loader / export path, exercising provider registration, start-time capability validation, the run lifecycle (result / cancel / dispose), and the structured-output branch — all deterministically and keylessly.
Usage
Load it as a plugin (functional shape: name/inject/Config/apply, no default). Config (all optional):
| Key | Default | Meaning |
|---|---|---|
name |
mock |
Registry name to register the provider under. |
reply |
mock subagent reply |
The scripted child's final answer text. |
stopReason |
completed |
The stop reason result settles with. |
capabilities |
all true |
Which start-time capabilities (outputSchema/depthLimit/toolFilter) the provider advertises. |
inheritsParentContext |
false |
The context contract to declare; true exercises the fork-shaped tool wording in consumer tests. |
structured |
{ reply } |
Structured value surfaced when a request carries an outputSchema and the capability is on. |
A cancel() issued before result settles flips the stop reason to aborted, so the cancellation path is observable.