b82c310db3
Two merge-blocking bugs in the shared in-process run driver, both rooted in `readResult` scanning the whole child session and deriving the stop reason only from `turn/end`: - A pre-turn `cancel()` cleared the queued prompt before any `turn/end` was logged, so the run settled `error` instead of `aborted`, violating the `SubagentRun.cancel()` contract. The driver now tracks that a cancel was requested and maps the no-turn case to `aborted`. - A fork child whose own turn produced no `assistant/message` returned the SEEDED parent's last message as a `completed` success. `readResult` now scopes to the child's OWN events (after the seed prefix), so a message-less child yields empty output. Both fixes carry a regression test proven to go red on the pre-fix driver. Also: correct the `SubagentRun.id` / event-payload docs (it is the child AGENT id, not a session id — the backend mints distinct tokens); refresh the stale `coding-agent` welcome string (subagent is now a tool); and replace the stale `TODO(sub-agents)` "deferred" prose in the Agent interface, core.md, and architecture.md with an accurate pointer to the realized seam.
Examples
Runnable demos (not workspaces) that showcase how the harness is wired. Each example is now a thin leaf: a cordis.yml that picks the swappable backends (an LLM adapter, a bash executor) and loads ONE app package, plus any demo-only mocks. The composition — the spine, the front-door cluster, and the boot glue — lives in the app packages (@deepseek-ai/dsh-stdio-agent, @deepseek-ai/dsh-acp-agent) and the @deepseek-ai/dsh-agent-core bundle they share. There is no start.ts; the demo:* scripts invoke each app package's bin.
echo-agent
A mock model + echo tool on the stdio chat app — the all-mock skeleton. The leaf swaps dsh-stdio-agent's LLM backend to a local mock-echo adapter and adds a local echo tool. Demonstrates:
- A thin leaf
cordis.ymlloading the@deepseek-ai/dsh-stdio-agentapp - Registering a mock
LlmAdapter(streaming scripted responses) - Registering a tool via
ctx.tools.register() - "Swap the backend, keep the app" — the only difference from
coding-agentis the adapter
Run with: pnpm run demo:echo. When prompted, type "echo " to trigger a tool call round-trip.
coding-agent
The real thing: DeepSeek V4 + the bash tool suite on the same @deepseek-ai/dsh-stdio-agent app. Where echo-agent proves the skeleton with mocks, this is a usable coding assistant.
Run with: pnpm run demo:coding (needs DEEPSEEK_API_KEY in the environment or a gitignored repo-root .env). See coding-agent/README.md for details.
acp-agent
The same coding agent exposed as an Agent Client Protocol (ACP) server over JSON-RPC stdio, via the @deepseek-ai/dsh-acp-agent app — drive it from Zed or any other ACP client. Also the home of the keyless snapshot tests.
Run with: pnpm run demo:acp (needs DEEPSEEK_API_KEY). See acp-agent/README.md for the Zed setup and the snapshot-test design.