The outer ring catches up with the engine swap (the package's own README/JSDoc rode the port commit): - Seam module doc and README name the worker-thread engine as THE implementation, with isolated-vm/separate-process sandboxing as the deferred hardening; the seam service doc states the holder-owned-runs contract (engine-fiber disposal deliberately leaves live runs to their holders). - Seam contract precision: agentsStarted documents the termination-path degradation to the host-observed count; the events section scopes the agent-start/agent-end pair to calls that STARTED a child run; WorkflowRun wording drops the vm-era abandonment language. - The dynamic-workflows RFC is rewritten in place to the shipped mechanism (implemented-RFC rule): why worker threads, the thread's concrete buys, the in-process node:vm first cut recorded under alternatives considered; the tool section describes the usage policy as the tool's own prompt section. - gen-doc-graphs: six workflow/* DYNAMIC_EVENT_DISPATCHERS entries (the catalog no longer claims nothing dispatches them) and the seam-note wording; core-data-structures gains its workflow.md index row; packages/README + AGENTS.md layout line + example cordis.yml comments say worker-thread; catalogs regenerated.
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), loads ONE app package, and may add optional product tools or 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
A REPL agent demo: DeepSeek V4 + the read/write/edit filesystem tools + the bash tool suite, subagent delegation, and the todo_write task tracker on the same @deepseek-ai/dsh-stdio-agent app. The UI is a terminal readline REPL.
Run with: pnpm run demo:repl (needs DEEPSEEK_API_KEY in the environment or a gitignored repo-root .env). See coding-agent/README.md for details.
acp-agent
An agent demo 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.