The compaction e2e never exercised compaction: its window/fixture combo (contextWindow 8000, thresholdRatio 0.5 → threshold 4000; four small files) peaked at ~1389 estimated tokens, so compactIfNeeded declined every pre-step and compact/start never landed. Shrink the window (contextWindow 2400 → threshold 1200; retainTokens 500 + summarizationMaxTokens 300 = 800 < 1200, convergence holds) and grow the fixture to six files so a couple of bash steps reliably cross the threshold. Verified compaction fires and the suite passes across repeated real-API runs. Sync docs left stale by the landed compaction work: list compaction.e2e.ts and keyless-smoke.e2e.ts in the coding-agent README (and fix the wrong "Both self-skip" count), add compaction to the examples with-key inventory, and replace the hypothetical compaction/marker / "future plugin" naming in the session README, session types JSDoc, and the core-data-structures catalog with the real compact/start, compact/summary, compact/end events.
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.