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feat(host): startAgentDevice() for embedder-owned daemons

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Issue 类型
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技术栈
nodejs, typescript
领域
api, devtools

调研方向

This is design work blocked by #3753, #3754 and #3755, so start by reading those and ADR 0027 and 0030 rather than writing code. The relevant entry points are the agent-device/host subpath boundary in scripts/layering/daemon-client-entry.ts, registration tokens in packages/daemon-contracts/src/daemon-registration-owner.ts, and PID matching in packages/daemon-contracts/src/daemon-process.ts. Done means the integration tests and packaged-export smoke test listed in the issue pass.

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描述

enhancement ready-for-agent

Part of #3747. Blocked by #3753, #3754, #3755.

Required behavior

import { startAgentDevice } from 'agent-device/host';
import testmu from '@agent-device/testmu';

await using host = await startAgentDevice({
  stateDir,
  host?: HostEnvironment,            // defaults to a captured copy of the calling process
  plugins: [testmu({ credentials })],
  log?: (entry: LogEntry) => void,   // silent by default
});
host.client        // AgentDeviceClient
host.clientConfig  // serializable; daemonLifecycle: 'attach'; pinned to this daemon's token and instance
await host.close() // ShutdownReport (#3752); also Symbol.asyncDispose
  • Subpath. It's exported from a new agent-device/host subpath, not the root, to respect the eager-closure budgets (ADR 0027) and R78 (scripts/layering/daemon-client-entry.ts:16).
  • Listener. The daemon runs in the calling process with a listener, so other processes can attach using clientConfig. Several hosts may share one process.
  • Plugins. plugins is the complete embedder set: store plugins are not merged. Built-ins still load.
  • Registration. It uses the ADR 0030 acquisition tokens (packages/daemon-contracts/src/daemon-registration-owner.ts:71). A state dir with a live registered daemon is refused (details.reason: 'state-dir-in-use').
  • Embedded ownership is recorded, so managed recovery and ensureDaemon never signal the host's PID. Pinned clients refuse a replaced daemon.
  • Stopping. agent-device daemon stop --state-dir stops an embedded daemon through an authenticated shutdown request. It awaits the removed registration and the report, not a process exit. This replaces PID command matching (packages/daemon-contracts/src/daemon-process.ts:11) for embedded daemons.

Done when

  • An integration test covers:
    • an embedder fixture plugin;
    • attach clients from a second process;
    • two hosts in one process;
    • the close() report;
    • daemon stop against an embedded daemon.
  • A packaged-export smoke test for agent-device/host passes.
  • The client API and website docs are updated, and the skill's routing notes cover hosting if startup guidance changes.
  • There's a changeset.
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  • 阅读贡献指南

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  3. Fork 仓库，在一个分支上完成修改。
  4. 提交 Pull Request，并在描述里引用这个 Issue 编号。

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