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refactor(subagent): merge continuation control service

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Dudu
2026-07-27 00:00:14 +08:00
committed by imccyu
parent 0a95ad8cc0
commit 88f913a9ae
71 changed files with 543 additions and 673 deletions
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4
docs/architecture.i18n.yaml
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@@ -2,5 +2,5 @@
# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write docs/architecture.md
architecture.md: d7beb60baac3c550eb008d414158d9a05181337a
architecture.zh.md: 200f82df3d936b45f4aeef0cb080c55483af602a
architecture.md: 44be3b55ab5061490a2ceb632175c1bb53a21330
architecture.zh.md: d803bea1ba39e8fd07a01446dd2d2ae53aca35e1

3
docs/architecture.md
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@@ -38,8 +38,7 @@ Harnesses are [Cordis](cordis-primer.md) contexts; packages contribute services,
| `ctx.skills` | [`skill/`](../packages/skill/README.md) | skill provider registry, progressive disclosure |
| `ctx.web` | [`web/`](../packages/web/README.md) | search/fetch provider registries |
| `ctx.compact`, `ctx.toolResultPrune` | [`compact/`](../packages/compact/README.md)/[`compact-tool-result-prune`](../packages/compact/compact-tool-result-prune/README.md) | summary compaction, optional model-free result pruning |
| `ctx.subagents` | [`subagent/`](../packages/subagent/README.md) | named delegation providers |
| `ctx.subagentControl` | [`subagent/`](../packages/subagent/README.md) | continuable-child Task-backed activation and steer-or-resume routing |
| `ctx.subagents` | [`subagent/`](../packages/subagent/README.md) | named delegation providers plus optional Task-backed continuation and steer-or-resume routing |
| `ctx.planMode` | [`plan/`](../packages/plan/README.md) | logged plan collaboration state |
| `ctx.tasks` | [`tasks/`](../packages/tasks/README.md) | background task registry, generic `task_*` controls |
| `ctx.workflows` | [`workflow/`](../packages/workflow/README.md) | script-driven multi-agent orchestration |

3
docs/architecture.zh.md
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@@ -38,8 +38,7 @@
| `ctx.skills` | [`skill/`](../packages/skill/README.md) | skill（技能）提供方注册表和渐进式披露 |
| `ctx.web` | [`web/`](../packages/web/README.md) | 搜索与抓取提供方注册表 |
| `ctx.compact`，`ctx.toolResultPrune` | [`compact/`](../packages/compact/README.md)/[`compact-tool-result-prune`](../packages/compact/compact-tool-result-prune/README.md) | 摘要压缩（compaction）和可选的无模型结果裁剪 |
| `ctx.subagents` | [`subagent/`](../packages/subagent/README.md) | 具名委托提供方 |
| `ctx.subagentControl` | [`subagent/`](../packages/subagent/README.md) | 可继续子 agent 的 Task 化 activation，以及 steer 或恢复路由 |
| `ctx.subagents` | [`subagent/`](../packages/subagent/README.md) | 具名委托提供方，以及可选的由 Task 支撑的继续执行与 steer-or-resume 路由 |
| `ctx.planMode` | [`plan/`](../packages/plan/README.md) | 落日志的 plan 协作状态 |
| `ctx.tasks` | [`tasks/`](../packages/tasks/README.md) | 后台任务注册表和通用 `task_*` 控制 |
| `ctx.workflows` | [`workflow/`](../packages/workflow/README.md) | 脚本驱动的多 agent 编排 |

12
docs/capability-seams.md
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@@ -132,12 +132,11 @@ flowchart LR
pkg_compact["compact"]
svc_compact["ctx.compact<br/>Compaction seam"]
pkg_subagent["subagent"]
svc_subagents["ctx.subagents<br/>Subagent provider registry"]
svc_subagents["ctx.subagents<br/>Subagent provider and continuation service"]
pkg_subagent_spawn["subagent-spawn"]
pkg_subagent_fork["subagent-fork"]
pkg_tool_ralph["tool-ralph"]
svc_subagentControl["ctx.subagentControl<br/>Continuable-subagent control service"]
pkg_tool_subagent_control["tool-subagent-control"]
pkg_tool_ralph["tool-ralph"]
pkg_tasks["tasks"]
svc_tasks["ctx.tasks<br/>Background task registry"]
pkg_tasks_local["tasks-local"]
@@ -225,7 +224,6 @@ flowchart LR
pkg_storage_domain --> svc_storageDomain
pkg_storage_json --> svc_storage
pkg_storage_sqlite --> svc_storage
pkg_subagent --> svc_subagentControl
pkg_subagent --> svc_subagents
pkg_subagent_acp --> svc_subagents
pkg_subagent_fork --> svc_subagents
@@ -314,10 +312,9 @@ flowchart LR
svc_spillStore --> pkg_spill_policy
svc_storage --> pkg_storage_domain
svc_storageDomain --> pkg_workspace
svc_subagentControl --> pkg_tool_subagent
svc_subagentControl --> pkg_tool_subagent_control
svc_subagents --> pkg_tool_ralph
svc_subagents --> pkg_tool_subagent
svc_subagents --> pkg_tool_subagent_control
svc_subprocess --> pkg_bash_local
svc_subprocess --> pkg_bash_sandbox
svc_subprocess --> pkg_lsp_local
@@ -394,8 +391,7 @@ flowchart LR
| `ctx.codeRuntime` | `seam` | [`code-runtime`](../packages/code-runtime/code-runtime) | [`code-runtime-worker`](../packages/code-runtime/code-runtime-worker) | [`tools`](../packages/core/tools) | - | Runs one model-written program against host-provided async bindings; backends differ by substrate and language (the tool registry consumes it for Code Mode). |
| `ctx.fs` | `seam` | [`fs`](../packages/fs/fs) | [`fs-local`](../packages/fs/fs-local), [`fs-sandbox`](../packages/fs/fs-sandbox) | [`tool-fs`](../packages/fs/tool-fs) | [`fs-policy`](../packages/fs/fs-policy) | tool-fs executes read/write/edit through ctx.fs; fs-sandbox fences mutations by the shared sandbox mode; fs-policy contributes observed-state checks through the fs/* event gate. |
| `ctx.compact` | `seam` | [`compact`](../packages/compact/compact) | [`compact-basic`](../packages/compact/compact-basic) | [`compact-basic`](../packages/compact/compact-basic) | - | The basic backend consumes post-step pressure and request-error recovery events; a model-facing compact tool remains deferred. |
| `ctx.subagents` | `seam` | [`subagent`](../packages/subagent/subagent) | [`subagent-spawn`](../packages/subagent/subagent-spawn), [`subagent-fork`](../packages/subagent/subagent-fork), [`subagent-acp`](../packages/subagent/subagent-acp) | [`tool-subagent`](../packages/subagent/tool-subagent), [`tool-ralph`](../packages/workflow/tool-ralph) | - | Providers implement transports; tool-subagent exposes configured delegation while tool-ralph requires one fresh structured-output route. |
| `ctx.subagentControl` | `core` | [`subagent`](../packages/subagent/subagent) | - | [`tool-subagent`](../packages/subagent/tool-subagent), [`tool-subagent-control`](../packages/subagent/tool-subagent-control) | - | Binds one durable child session to Task-backed activations over ctx.subagents; tool-subagent starts continuable background children and tool-subagent-control delivers follow-up messages. |
| `ctx.subagents` | `seam` | [`subagent`](../packages/subagent/subagent) | [`subagent-spawn`](../packages/subagent/subagent-spawn), [`subagent-fork`](../packages/subagent/subagent-fork), [`subagent-acp`](../packages/subagent/subagent-acp) | [`tool-subagent`](../packages/subagent/tool-subagent), [`tool-subagent-control`](../packages/subagent/tool-subagent-control), [`tool-ralph`](../packages/workflow/tool-ralph) | - | Providers implement transports; the service also owns optional Task-backed continuation orchestration, tool-subagent selects one-shot or continuable delegation, tool-subagent-control delivers follow-ups, and tool-ralph requires one fresh structured-output route. |
| `ctx.tasks` | `seam` | [`tasks`](../packages/tasks/tasks) | [`tasks-local`](../packages/tasks/tasks-local) | [`tool-bash`](../packages/bash/tool-bash), [`tool-pty`](../packages/pty/tool-pty), [`tool-subagent`](../packages/subagent/tool-subagent), [`tool-tasks`](../packages/tasks/tool-tasks) | - | Producers (background bash, PTY sends, and subagent delegations) register running work; tool-tasks is the model-facing control surface that reads, lists, and kills it; tasks-local is the process-local registry. |
| `ctx.web` | `seam` | [`web`](../packages/web/web) | [`web-search-exa`](../packages/web/web-search-exa), [`web-search-perplexity`](../packages/web/web-search-perplexity), [`web-search-deepseek`](../packages/web/web-search-deepseek), [`web-fetch-local`](../packages/web/web-fetch-local) | [`tool-web`](../packages/web/tool-web) | - | Search and fetch providers register into one ctx.web seam; tool-web owns the stable model-facing names. |
| `ctx.spillStore` | `seam` | [`spill`](../packages/spill/spill) | [`spill-local`](../packages/spill/spill-local) | [`spill-policy`](../packages/spill/spill-policy) | - | The backend saves oversized tool text and returns a model-facing locator plus retrieval hint; spill-policy is the tools/post-execute consumer that decides when to spill. |

11
docs/config-catalog.md
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@@ -1893,6 +1893,12 @@ export interface Config {
* parameter and reject forced background calls.
*/
enableRunInBackground?: boolean
/**
* Background execution policy (default `one-shot`). `continuable` requires
* a provider with persisted resume support and returns both child and Task
* ids; follow-up adapters remain independently optional.
*/
backgroundMode?: 'one-shot' | 'continuable'
/**
* Agent options applied to every child; omitted fields use child-loop defaults.
*/
@@ -1928,7 +1934,7 @@ export interface Config {
Depends on: [`AgentOptions`](core-data-structures/core.md)
Source: [`packages/subagent/tool-subagent/src/index.ts:27`](../packages/subagent/tool-subagent/src/index.ts)
Source: [`packages/subagent/tool-subagent/src/index.ts:25`](../packages/subagent/tool-subagent/src/index.ts)
## `@deepseek-ai/dsh-tool-tasks`
@@ -2343,12 +2349,11 @@ These load from a `cordis.yml` entry with no `config:` block; they declare no co
- `@deepseek-ai/dsh-session-projection` ([`packages/session-projection/session-projection/src/index.ts`](../packages/session-projection/session-projection/src/index.ts))
- `@deepseek-ai/dsh-storage` ([`packages/storage/storage/src/index.ts`](../packages/storage/storage/src/index.ts))
- `@deepseek-ai/dsh-subagent` ([`packages/subagent/subagent/src/index.ts`](../packages/subagent/subagent/src/index.ts))
- `@deepseek-ai/dsh-subagent-control` — requires `subagents` · `tasks` · `agents` ([`packages/subagent/subagent-control/src/index.ts`](../packages/subagent/subagent-control/src/index.ts))
- `@deepseek-ai/dsh-subprocess-local` ([`packages/subprocess/subprocess-local/src/index.ts`](../packages/subprocess/subprocess-local/src/index.ts))
- `@deepseek-ai/dsh-tasks-local` ([`packages/tasks/tasks-local/src/index.ts`](../packages/tasks/tasks-local/src/index.ts))
- `@deepseek-ai/dsh-timeout-policy` — requires `tools` ([`packages/timeout/timeout-policy/src/index.ts`](../packages/timeout/timeout-policy/src/index.ts))
- `@deepseek-ai/dsh-tool-ask-user` — requires `tools` · `userInteraction` ([`packages/ui/tool-ask-user/src/index.ts`](../packages/ui/tool-ask-user/src/index.ts))
- `@deepseek-ai/dsh-tool-subagent-control` — requires `tools` · `subagentControl` ([`packages/subagent/tool-subagent-control/src/index.ts`](../packages/subagent/tool-subagent-control/src/index.ts))
- `@deepseek-ai/dsh-tool-subagent-control` — requires `tools` · `subagents` ([`packages/subagent/tool-subagent-control/src/index.ts`](../packages/subagent/tool-subagent-control/src/index.ts))
- `@deepseek-ai/dsh-tool-todo` — requires `tools` ([`packages/todo/tool-todo/src/index.ts`](../packages/todo/tool-todo/src/index.ts))
- `@deepseek-ai/dsh-typert-registry` ([`packages/typert/registry/src/index.ts`](../packages/typert/registry/src/index.ts))
- `@deepseek-ai/dsh-user-interaction` ([`packages/ui/user-interaction/src/index.ts`](../packages/ui/user-interaction/src/index.ts))

8
docs/cordis-catalog/events.md
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@@ -795,7 +795,7 @@ A ready child settled. Scope-filtered dispatch uses the same delegating parent c
Types: [Scoped](../core-data-structures/scope.md) · [SubagentService](../core-data-structures/subagent.md)
Source: [`packages/subagent/subagent/src/index.ts:150`](../../packages/subagent/subagent/src/index.ts)
Source: [`packages/subagent/subagent/src/index.ts:165`](../../packages/subagent/subagent/src/index.ts)
### `subagent/provider-added` — emit
@@ -812,7 +812,7 @@ A provider became resolvable in the registry.
Types: [SubagentProvider](../core-data-structures/subagent.md)
Source: [`packages/subagent/subagent/src/index.ts:124`](../../packages/subagent/subagent/src/index.ts)
Source: [`packages/subagent/subagent/src/index.ts:139`](../../packages/subagent/subagent/src/index.ts)
### `subagent/provider-removed` — emit
@@ -827,7 +827,7 @@ A provider left the registry. Accepted runs remain holder-owned.
'subagent/provider-removed'(name: string): void
```
Source: [`packages/subagent/subagent/src/index.ts:130`](../../packages/subagent/subagent/src/index.ts)
Source: [`packages/subagent/subagent/src/index.ts:145`](../../packages/subagent/subagent/src/index.ts)
### `subagent/start` — emit
@@ -849,7 +849,7 @@ A provider established a ready child. For in-process providers, `ctx.agents.get(
Types: [Scoped](../core-data-structures/scope.md) · [SubagentService](../core-data-structures/subagent.md)
Source: [`packages/subagent/subagent/src/index.ts:141`](../../packages/subagent/subagent/src/index.ts)
Source: [`packages/subagent/subagent/src/index.ts:156`](../../packages/subagent/subagent/src/index.ts)
## `system-prompt/*`

60
docs/cordis-catalog/services.md
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@@ -1946,56 +1946,30 @@ async closeAll(): Promise<void>
Source: [`packages/storage/storage-domain/src/index.ts:69`](../../packages/storage/storage-domain/src/index.ts)
## `ctx.subagentControl` — `SubagentControlService`
## `ctx.subagents` — `SubagentService`
The continuable-subagent orchestration service. Tool schema and UI adapters are consumers of this one contract: parent and human messages route through sendMessage and share one activation result and cancellation boundary, while foreground one-shot delegation keeps calling `ctx.subagents.start()` directly.
Named provider registry with raw and Task-backed continuation operations.
```ts cordis-catalog
/**
* Start a continuable background child: allocate its stable session id,
* snapshot its durable descriptor, and register the initial activation's
* Task. A synchronous validation failure (a non-JSON descriptor input,
* missing persistence, Task preflight) throws without creating a Task; the
* method otherwise returns both identities immediately, without waiting for
* child publication or descriptor durability. Asynchronous startup failure
* settles the returned Task as `failed` (or `killed` when cancelled) after
* any published run is disposed, which can leave an unmaterialized child id
* that later by-id operations report as unavailable.
* @param spec - provider, Task label, and the delegation request.
* @returns the stable child id and the initial activation's Task id.
* Start one durable continuable child through a Task-backed initial
* activation.
* @param spec - provider, Task label, and delegation request.
* @returns the stable child id and initial activation Task id.
*/
startContinuable(spec: ContinuableStartSpec): ContinuableStart
/**
* Deliver one message to a known continuable child: steer its running
* activation, or cold-resume the durable session into a fresh Task-backed
* activation. The two routes are reported distinctly so timing-dependent
* routing is observable. Rejection means the message was NOT delivered — in
* particular, losing a race with Task settlement does not fall through to
* cold resume within the same call; a later retry after Task terminal may
* start the next activation. The started Task owns descriptor lookup and
* direct-parent authorization (its AbortSignal exists before that lookup),
* so an unknown, foreign, or descriptor-less child settles the started Task
* as `failed` with a detail reporting the id as unavailable.
* @param parent - the live parent agent sending the message (model tool or
* human adapter); Task access is authorized by its session id.
* @param childId - the stable child session id.
* @param message - the user-role content to deliver.
* @param source - caller-supplied attribution retained across either route.
* @returns whether the message `steered` the existing Task or `started` a new one.
* Deliver a message to a continuable child by steering its live activation
* or cold-resuming a fresh Task-backed activation.
* @param parent - live direct parent authorizing the operation.
* @param childId - durable child session id.
* @param message - user-role content to deliver.
* @param source - durable caller attribution.
* @returns the existing steered Task or newly started Task.
*/
async sendMessage( parent: Agent, childId: SessionId, message: ContentBlock[], source: MessageSource, ): Promise<SendMessageResult>
```
sendMessage( parent: Agent, childId: SessionId, message: ContentBlock[], source: MessageSource, ): Promise<SendMessageResult>
Types: [Agent](../core-data-structures/core.md) · [ContentBlock](../core-data-structures/core.md) · [ContinuableStart](../core-data-structures/subagent.md) · [ContinuableStartSpec](../core-data-structures/subagent.md) · [MessageSource](../core-data-structures/core.md) · [SendMessageResult](../core-data-structures/subagent.md) · [SessionId](../core-data-structures/core.md)
Source: [`packages/subagent/subagent-control/src/index.ts:176`](../../packages/subagent/subagent-control/src/index.ts)
## `ctx.subagents` — `SubagentService`
Named provider registry and capability-checked start surface.
```ts cordis-catalog
/**
* Register a provider under its name. Registration is effect-scoped and HMR
* safe; removing a provider blocks new starts but does not revoke runs that
@@ -2032,7 +2006,7 @@ async start(name: string, request: SubagentStartRequest): Promise<SubagentRun>
/**
* Resume a persisted continuable child through the named provider's
* `resume` capability, with the same run lifecycle observation as
* {@link start}. The caller (the control service) has already loaded the
* {@link start}. The internal continuation manager has already loaded the
* child, folded its descriptor, and authorized the parent; this method owns
* only capability-checked dispatch.
* @param name - the provider recorded in the child's descriptor.
@@ -2042,9 +2016,9 @@ async start(name: string, request: SubagentStartRequest): Promise<SubagentRun>
async resume(name: string, request: SubagentResumeRequest): Promise<SubagentRun>
```
Types: [SubagentProvider](../core-data-structures/subagent.md) · [SubagentResumeRequest](../core-data-structures/subagent.md) · [SubagentRun](../core-data-structures/subagent.md) · [SubagentStartRequest](../core-data-structures/subagent.md)
Types: [Agent](../core-data-structures/core.md) · [ContentBlock](../core-data-structures/core.md) · [ContinuableStart](../core-data-structures/subagent.md) · [ContinuableStartSpec](../core-data-structures/subagent.md) · [MessageSource](../core-data-structures/core.md) · [SendMessageResult](../core-data-structures/subagent.md) · [SessionId](../core-data-structures/core.md) · [SubagentProvider](../core-data-structures/subagent.md) · [SubagentResumeRequest](../core-data-structures/subagent.md) · [SubagentRun](../core-data-structures/subagent.md) · [SubagentStartRequest](../core-data-structures/subagent.md)
Source: [`packages/subagent/subagent/src/index.ts:191`](../../packages/subagent/subagent/src/index.ts)
Source: [`packages/subagent/subagent/src/index.ts:206`](../../packages/subagent/subagent/src/index.ts)
## `ctx.subprocess` — `SubprocessService` (abstract seam)

14
docs/core-data-structures/subagent.md
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@@ -4,9 +4,9 @@ English | [中文](subagent.zh.md)
The subagent seam — an agent delegating work to a child agent. Like [bash](bash.md) it is **one optional capability**, not part of the agent-loop spine, so its vocabulary lives here rather than in [core.md](core.md). But it differs from every other seam on one axis: **multiple provider implementations coexist** in one context, registered by name (`ctx.subagents`), where bash allows only one executor. The registry shape mirrors the [LLM adapter registry](llm-streaming.md), not the single-service bash executor.
Interface: [dsh-subagent](../../packages/subagent/subagent) (`ctx.subagents` + the vocabulary below). Implementations are sibling packages (`dsh-subagent-spawn`, `-fork`, `-acp`); the model-facing consumers are [dsh-tool-subagent](../../packages/subagent/tool-subagent) (per-provider delegation) and [dsh-tool-subagent-control](../../packages/subagent/tool-subagent-control) (the global `send_message`). Continuable-child orchestration lives on `ctx.subagentControl` in [dsh-subagent-control](../../packages/subagent/subagent-control). The proposals and rationale: [the subagent Agent Note](../../.agents/notes/implemented/feature/2026-06-21-subagent-capability-seam.md) and [the continuable background subagents Agent Note](../../.agents/notes/implemented/feature/2026-07-21-continuable-background-subagents.md).
Interface: [dsh-subagent](../../packages/subagent/subagent) (`ctx.subagents` + the vocabulary below). Implementations are sibling packages (`dsh-subagent-spawn`, `-fork`, `-acp`); the model-facing consumers are [dsh-tool-subagent](../../packages/subagent/tool-subagent) (per-provider delegation) and [dsh-tool-subagent-control](../../packages/subagent/tool-subagent-control) (the optional global `send_message`). The same `ctx.subagents` service owns continuable-child orchestration through an internal Task-backed manager. The rationale lives in [the subagent Agent Note](../../.agents/notes/implemented/feature/2026-06-21-subagent-capability-seam.md), [the continuable background subagents Agent Note](../../.agents/notes/implemented/feature/2026-07-21-continuable-background-subagents.md), and [the merged-service Agent Note](../../.agents/notes/implemented/simplification/2026-07-26-merge-subagent-control-service.md).
Sources: [`packages/subagent/subagent/src/types.ts`](../../packages/subagent/subagent/src/types.ts) and [`packages/subagent/subagent-control/src/index.ts`](../../packages/subagent/subagent-control/src/index.ts)
Sources: [`packages/subagent/subagent/src/types.ts`](../../packages/subagent/subagent/src/types.ts), [`packages/subagent/subagent/src/index.ts`](../../packages/subagent/subagent/src/index.ts), and [`packages/subagent/subagent/src/continuation.ts`](../../packages/subagent/subagent/src/continuation.ts)
## Two kinds of capability, discovered two ways
@@ -90,7 +90,7 @@ interface SubagentStartRequest {
*/
readonly persona?: string
/**
* Continuable-child intent, resolved by the control service before start.
* Continuable-child intent, resolved by `ctx.subagents` before start.
* The provider MUST publish exactly `sessionId` as the child identity
* instead of allocating one internally, and MUST append the snapshotted
* `descriptor` as the child's turn-enclosed `subagent/descriptor` event
@@ -105,7 +105,7 @@ interface SubagentStartRequest {
## Continuable children: `SubagentContinuation` and `SubagentResumeRequest`
A **continuable background subagent** is a durable child session with a series of Task-backed activations. `ctx.subagentControl` (`SubagentControlService` in [dsh-subagent-control](../../packages/subagent/subagent-control)) allocates the stable child id, snapshots the versioned `subagent/descriptor` payload, and passes both through the resolved start request; the provider publishes exactly that id and appends the descriptor inside the child's first turn. On follow-up, the control service loads the persisted child, authorizes the recorded `parentSession` as the direct parent, folds the descriptor, and dispatches a fully resolved resume request through `SubagentService.resume()` to `SubagentProvider.resume()`. The seam stays Task- and persistence-agnostic — descriptor lookup and Task association live only in the control service. `startContinuable()` returns a `ContinuableStart` (both identities), and `sendMessage()` returns a `SendMessageResult` reporting whether the message `steered` the running activation's existing Task or `started` a fresh one. Every sender supplies a `MessageSource`; the model-facing tool uses `CoordinatorMessageSource`, while a human adapter uses `{ kind: 'user' }`. Both project to a user-role model message, but the durable source remains distinct for policy and title consumers.
A **continuable background subagent** is a durable child session with a series of Task-backed activations. `SubagentService.startContinuable()` allocates the stable child id, snapshots the versioned `subagent/descriptor` payload, and passes both through the resolved start request; the provider publishes exactly that id and appends the descriptor inside the child's first turn. `SubagentService.sendMessage()` loads and authorizes a stopped child before dispatching a fully resolved resume request through the raw `resume()` operation, or steers its live activation. An internal manager owns descriptor lookup and Task association only while `ctx.tasks` and `ctx.agents` exist; persistence is required per continuation operation, not to load the provider registry. `startContinuable()` returns both identities, while `sendMessage()` reports whether the message `steered` the existing Task or `started` a fresh one. Every sender supplies a `MessageSource`; the optional model-facing tool uses `CoordinatorMessageSource`, while a human adapter uses `{ kind: 'user' }`.
```ts type-equiv
/** Attribution for a model coordinator's follow-up to one of its children. */
@@ -119,10 +119,10 @@ interface CoordinatorMessageSource {
```ts type-equiv
/**
* The resolved continuable-child identity and durable composition record a
* control-service caller attaches to a start request.
* continuation caller attaches to a start request.
*/
interface SubagentContinuation {
/** Control-allocated stable child session id, published verbatim. */
/** Service-allocated stable child session id, published verbatim. */
readonly sessionId: SessionId
/** Snapshotted descriptor persisted in the child log for cold resume. */
readonly descriptor: SubagentDescriptorData
@@ -132,7 +132,7 @@ interface SubagentContinuation {
```ts type-equiv
/**
* What a caller asks for when resuming a persisted continuable child. The
* control service loads the child log, folds and authorizes its descriptor,
* continuation manager loads the child log, folds and authorizes its descriptor,
* and passes this fully resolved request to
* {@link SubagentService.resume}, which dispatches to
* {@link SubagentProvider.resume}. The provider reconstructs the declared

8
docs/event-producer-consumer.md
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@@ -41,10 +41,10 @@ This matrix shows which packages dispatch each harness-owned event and which pac
| `settings/document-updated` | `emit` | [`packages/settings/settings/src/index.ts:150`](../packages/settings/settings/src/index.ts) | [`settings`](../packages/settings/settings) (`events.dispatch`) | `apiproxy` |
| `settings/updated` | `emit` | [`packages/settings/settings/src/index.ts:137`](../packages/settings/settings/src/index.ts) | [`settings`](../packages/settings/settings) (`events.dispatch`) | [`settings`](../packages/settings/settings) |
| `skills/change` | `emit` | [`packages/skill/skill/src/index.ts:188`](../packages/skill/skill/src/index.ts) | [`skill`](../packages/skill/skill) (`events.dispatch`) | [`tui`](../packages/ui/tui) |
| `subagent/end` | `emit` | [`packages/subagent/subagent/src/index.ts:150`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`events.dispatch`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`jsonrpc`](../packages/ui/jsonrpc), [`subagent`](../packages/subagent/subagent) |
| `subagent/provider-added` | `emit` | [`packages/subagent/subagent/src/index.ts:124`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`emit`) | [`subagent`](../packages/subagent/subagent), [`tool-subagent`](../packages/subagent/tool-subagent) |
| `subagent/provider-removed` | `emit` | [`packages/subagent/subagent/src/index.ts:130`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`events.dispatch`) | [`subagent`](../packages/subagent/subagent), [`tool-subagent`](../packages/subagent/tool-subagent) |
| `subagent/start` | `emit` | [`packages/subagent/subagent/src/index.ts:141`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`events.dispatch`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`subagent`](../packages/subagent/subagent) |
| `subagent/end` | `emit` | [`packages/subagent/subagent/src/index.ts:165`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`events.dispatch`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`jsonrpc`](../packages/ui/jsonrpc), [`subagent`](../packages/subagent/subagent) |
| `subagent/provider-added` | `emit` | [`packages/subagent/subagent/src/index.ts:139`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`emit`) | [`subagent`](../packages/subagent/subagent), [`tool-subagent`](../packages/subagent/tool-subagent) |
| `subagent/provider-removed` | `emit` | [`packages/subagent/subagent/src/index.ts:145`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`events.dispatch`) | [`subagent`](../packages/subagent/subagent), [`tool-subagent`](../packages/subagent/tool-subagent) |
| `subagent/start` | `emit` | [`packages/subagent/subagent/src/index.ts:156`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`events.dispatch`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`subagent`](../packages/subagent/subagent) |
| `system-prompt/assemble` | `waterfall` | [`packages/core/system-prompt/src/index.ts:29`](../packages/core/system-prompt/src/index.ts) | [`system-prompt`](../packages/core/system-prompt) (`waterfall`) | [`agent`](../packages/core/agent), [`system-prompt`](../packages/core/system-prompt) |
| `system-prompt/change` | `emit` | [`packages/core/system-prompt/src/index.ts:35`](../packages/core/system-prompt/src/index.ts) | [`system-prompt`](../packages/core/system-prompt) (`emit`) | - |
| `telemetry/record` | `waterfall` | [`packages/telemetry/session-telemetry/src/index.ts:41`](../packages/telemetry/session-telemetry/src/index.ts) | [`session-telemetry`](../packages/telemetry/session-telemetry) (`waterfall`) | - |

40
docs/module-graph.md
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@@ -65,7 +65,6 @@ flowchart TD
subgraph group_subagent["packages/subagent"]
pkg_subagent["subagent"]
pkg_subagent_acp["subagent-acp"]
pkg_subagent_control["subagent-control"]
pkg_subagent_dsh_sdk["subagent-dsh-sdk"]
pkg_subagent_fork["subagent-fork"]
pkg_subagent_inprocess["subagent-inprocess"]
@@ -740,6 +739,8 @@ flowchart TD
pkg_subagent --> pkg_llm
pkg_subagent --> pkg_scope
pkg_subagent --> pkg_session
pkg_subagent --> pkg_session_persistence
pkg_subagent --> pkg_tasks
pkg_subagent --> pkg_tools
pkg_tool_web --> pkg_invariants
pkg_tool_web --> pkg_llm
@@ -892,13 +893,6 @@ flowchart TD
pkg_subagent_acp --> pkg_session
pkg_subagent_acp --> pkg_subagent
pkg_subagent_acp --> pkg_subprocess
pkg_subagent_control --> pkg_agent
pkg_subagent_control --> pkg_invariants
pkg_subagent_control --> pkg_llm
pkg_subagent_control --> pkg_session
pkg_subagent_control --> pkg_session_persistence
pkg_subagent_control --> pkg_subagent
pkg_subagent_control --> pkg_tasks
pkg_subagent_inprocess --> pkg_agent
pkg_subagent_inprocess --> pkg_invariants
pkg_subagent_inprocess --> pkg_llm
@@ -908,6 +902,17 @@ flowchart TD
pkg_subagent_inprocess --> pkg_system_prompt
pkg_subagent_inprocess --> pkg_tools
pkg_subagent_inprocess --> pkg_user_approval
pkg_tool_subagent --> pkg_agent
pkg_tool_subagent --> pkg_invariants
pkg_tool_subagent --> pkg_llm
pkg_tool_subagent --> pkg_subagent
pkg_tool_subagent --> pkg_tasks
pkg_tool_subagent --> pkg_tools
pkg_tool_subagent_control --> pkg_invariants
pkg_tool_subagent_control --> pkg_llm
pkg_tool_subagent_control --> pkg_session
pkg_tool_subagent_control --> pkg_subagent
pkg_tool_subagent_control --> pkg_tools
pkg_repository_plugin --> pkg_invariants
pkg_repository_plugin --> pkg_mcp_client
pkg_repository_plugin --> pkg_paths
@@ -1014,18 +1019,6 @@ flowchart TD
pkg_subagent_spawn --> pkg_invariants
pkg_subagent_spawn --> pkg_subagent
pkg_subagent_spawn --> pkg_subagent_inprocess
pkg_tool_subagent --> pkg_agent
pkg_tool_subagent --> pkg_invariants
pkg_tool_subagent --> pkg_llm
pkg_tool_subagent --> pkg_subagent
pkg_tool_subagent --> pkg_subagent_control
pkg_tool_subagent --> pkg_tasks
pkg_tool_subagent --> pkg_tools
pkg_tool_subagent_control --> pkg_invariants
pkg_tool_subagent_control --> pkg_llm
pkg_tool_subagent_control --> pkg_session
pkg_tool_subagent_control --> pkg_subagent_control
pkg_tool_subagent_control --> pkg_tools
pkg_jsonrpc --> pkg_agent
pkg_jsonrpc --> pkg_invariants
pkg_jsonrpc --> pkg_llm
@@ -1199,7 +1192,7 @@ flowchart TD
| [`tool-fs-search`](../packages/fs/tool-fs-search) | `fs` | [`bash`](../packages/bash/bash), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`retention`](../packages/util/retention), [`session`](../packages/core/session), [`spill`](../packages/spill/spill), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools) |
| [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) | `fs` | [`fs`](../packages/fs/fs), [`invariants`](../packages/support/invariants), [`sandbox`](../packages/sandbox/sandbox), [`sandbox-policy`](../packages/sandbox/sandbox-policy), [`tools`](../packages/core/tools) |
| [`tool-skill`](../packages/skill/tool-skill) | `skill` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`skill`](../packages/skill/skill), [`tools`](../packages/core/tools) |
| [`subagent`](../packages/subagent/subagent) | `subagent` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`tools`](../packages/core/tools) |
| [`subagent`](../packages/subagent/subagent) | `subagent` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`tasks`](../packages/tasks/tasks), [`tools`](../packages/core/tools) |
| [`tool-web`](../packages/web/tool-web) | `web` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools), [`web`](../packages/web/web) |
| [`spill-policy`](../packages/spill/spill-policy) | `spill` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`retention`](../packages/util/retention), [`session`](../packages/core/session), [`spill`](../packages/spill/spill), [`tools`](../packages/core/tools) |
| [`timeout-policy`](../packages/timeout/timeout-policy) | `timeout` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`timeout`](../packages/util/timeout), [`tools`](../packages/core/tools) |
@@ -1226,8 +1219,9 @@ flowchart TD
| [`tool-tasks`](../packages/tasks/tool-tasks) | `tasks` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`retention`](../packages/util/retention), [`system-prompt`](../packages/core/system-prompt), [`tasks`](../packages/tasks/tasks), [`tools`](../packages/core/tools) |
| [`tool-workflow`](../packages/workflow/tool-workflow) | `workflow` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools), [`workflow`](../packages/workflow/workflow) |
| [`subagent-acp`](../packages/subagent/subagent-acp) | `subagent` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`subprocess`](../packages/subprocess/subprocess) |
| [`subagent-control`](../packages/subagent/subagent-control) | `subagent` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`subagent`](../packages/subagent/subagent), [`tasks`](../packages/tasks/tasks) |
| [`subagent-inprocess`](../packages/subagent/subagent-inprocess) | `subagent` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`sandbox-policy`](../packages/sandbox/sandbox-policy), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools), [`user-approval`](../packages/ui/user-approval) |
| [`tool-subagent`](../packages/subagent/tool-subagent) | `subagent` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`subagent`](../packages/subagent/subagent), [`tasks`](../packages/tasks/tasks), [`tools`](../packages/core/tools) |
| [`tool-subagent-control`](../packages/subagent/tool-subagent-control) | `subagent` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`tools`](../packages/core/tools) |
| [`repository-plugin`](../packages/cordis/repository-plugin) | `cordis` | [`invariants`](../packages/support/invariants), [`mcp-client`](../packages/mcp/mcp-client), [`paths`](../packages/util/paths), [`skill-local`](../packages/skill/skill-local) |
| [`hooks-claude`](../packages/hooks/hooks-claude) | `hooks` | [`agent`](../packages/core/agent), [`hook-protocol`](../packages/hooks/hook-protocol), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`subagent`](../packages/subagent/subagent), [`tools`](../packages/core/tools) |
| [`tui`](../packages/ui/tui) | `ui` | [`agent`](../packages/core/agent), [`agent-loop`](../packages/core/agent-loop), [`commands`](../packages/ui/commands), [`compact`](../packages/compact/compact), [`goal`](../packages/goal/goal), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`llm-retry`](../packages/llm/llm-retry), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`session-query`](../packages/session-query/session-query), [`session-reference`](../packages/context/session-reference), [`session-title`](../packages/session-title/session-title), [`skill`](../packages/skill/skill), [`subprocess`](../packages/subprocess/subprocess), [`system-prompt`](../packages/core/system-prompt), [`token-meter`](../packages/llm/token-meter), [`tools`](../packages/core/tools), [`user-interaction`](../packages/ui/user-interaction) |
@@ -1240,8 +1234,6 @@ flowchart TD
| [`workflow-workerthread`](../packages/workflow/workflow-workerthread) | `workflow` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`tools`](../packages/core/tools), [`workflow`](../packages/workflow/workflow) |
| [`subagent-fork`](../packages/subagent/subagent-fork) | `subagent` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`subagent-inprocess`](../packages/subagent/subagent-inprocess) |
| [`subagent-spawn`](../packages/subagent/subagent-spawn) | `subagent` | [`invariants`](../packages/support/invariants), [`subagent`](../packages/subagent/subagent), [`subagent-inprocess`](../packages/subagent/subagent-inprocess) |
| [`tool-subagent`](../packages/subagent/tool-subagent) | `subagent` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`subagent`](../packages/subagent/subagent), [`subagent-control`](../packages/subagent/subagent-control), [`tasks`](../packages/tasks/tasks), [`tools`](../packages/core/tools) |
| [`tool-subagent-control`](../packages/subagent/tool-subagent-control) | `subagent` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`subagent-control`](../packages/subagent/subagent-control), [`tools`](../packages/core/tools) |
| [`jsonrpc`](../packages/ui/jsonrpc) | `ui` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`llm-deepseek`](../packages/llm/llm-deepseek), [`scope`](../packages/core/scope), [`sdk-protocol`](../packages/sdk/sdk-protocol), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent) |
| [`acp-demo`](../packages/examples/acp-demo) | `examples` | [`acp`](../packages/acp/acp), [`agent-spine-demo`](../packages/examples/agent-spine-demo), [`app-boot`](../packages/ui/app-boot), [`invariants`](../packages/support/invariants), [`session-checkpoint-policy`](../packages/session-persistence/session-checkpoint-policy), [`session-persistence-jsonl`](../packages/session-persistence/session-persistence-jsonl), [`session-query`](../packages/session-query/session-query), [`session-query-sqlite`](../packages/session-query/session-query-sqlite), [`tools`](../packages/core/tools), [`workspace-context`](../packages/context/workspace-context) |
| [`cli-demo`](../packages/examples/cli-demo) | `examples` | [`agent`](../packages/core/agent), [`agent-spine-demo`](../packages/examples/agent-spine-demo), [`app-boot`](../packages/ui/app-boot), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-checkpoint-policy`](../packages/session-persistence/session-checkpoint-policy), [`session-persistence-jsonl`](../packages/session-persistence/session-persistence-jsonl), [`tools`](../packages/core/tools), [`workspace-context`](../packages/context/workspace-context) |

6
docs/tool-catalog.md
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@@ -31,7 +31,7 @@ This table connects model-visible tool names to the plugin package and service s
| `@deepseek-ai/dsh-tool-skill` | `skill` | `ctx.tools`, `ctx.agents`, `ctx.skills` | `tool/call`, `tool/result`, `user/message replacement catalogs via agent.inject()` | - | - |
| `@deepseek-ai/dsh-tool-session-query` | `session_event_read`, `session_event_search`, `session_event_trace`, `session_search`, `session_trace` | `ctx.tools`, `ctx.systemPrompt`, `ctx.sessionQuery`, `a calling Agent for workspace authority` | `tool/call`, `tool/result` | - | The five read-only tools hide provider cursors and authorize every result from the immutable calling agent session. The package is opt-in; compositions that need enforced deadlines or bounded inline output also mount the generic timeout or spill policies. |
| `@deepseek-ai/dsh-tool-subagent` | `subagent` | `ctx.tools`, `ctx.subagents` | `tool/call`, `tool/result`, `child session events through the chosen provider` | `subagent`, `subagent_fork` | The registered tool name is the load-time `toolName` config (default `subagent`); the schema above is that default. The shipped example agents load this package once per subagent backend, so the model additionally sees `subagent_fork` (bound to the fork backend) with an identical schema — see `apps/cli/config/base.cordis.yml` and `examples/acp-agent/cordis.yml`. |
| `@deepseek-ai/dsh-tool-subagent-control` | `send_message` | `ctx.tools`, `ctx.subagentControl` | `tool/call`, `tool/result`, `child session events through the control service` | - | The one globally named follow-up tool over continuable background subagents: provider-bound `tool-subagent` instances register distinct delegation tools, while this package registers `send_message` once. |
| `@deepseek-ai/dsh-tool-subagent-control` | `send_message` | `ctx.tools`, `ctx.subagents` | `tool/call`, `tool/result`, `child session events through ctx.subagents` | - | The one globally named follow-up tool over continuable background subagents: provider-bound `tool-subagent` instances register distinct delegation tools, while this package registers `send_message` once. |
| `@deepseek-ai/dsh-tool-tasks` | `task_kill`, `task_list`, `task_output` | `ctx.tools`, `ctx.tasks`, `ctx.systemPrompt` | `tool/call`, `tool/result`, `user/message via agent.inject() for background completion notices` | - | The kind-agnostic background-task control surface: background bash commands, PTY sends, and subagents are read, listed, and killed through the same three tools. Loading the plugin attaches the control surface that arms producers' `ctx.tasks.start()`. |
| `@deepseek-ai/dsh-tool-todo` | `todo_write` | `ctx.tools`, `owning Agent session` | `tool/call`, `todo/write`, `tool/result` | - | todo_write is session-owned state; UIs render the latest todo/write event as a checklist. |
| `@deepseek-ai/dsh-tool-workflow` | `workflow` | `ctx.tools`, `ctx.workflows`, `ctx.systemPrompt`, `a calling Agent (exec.agent parents the script children)` | `tool/call`, `tool/result` | - | - |
@@ -1117,7 +1117,7 @@ The five read-only tools hide provider cursors and authorize every result from t
### `subagent`
Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to start a continuable background subagent: you receive its subagent id and a task id; collect the result with `task_output`, stop it with `task_kill`, and send follow-up messages with `send_message`.
Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.
```json
{
@@ -1133,7 +1133,7 @@ Delegate a self-contained task to a subagent (a separate agent that works in its
},
"run_in_background": {
"type": "boolean",
"description": "Run as a continuable background subagent and return its subagent and task ids; collect with task_output, stop with task_kill, follow up with send_message."
"description": "Run as a background task and return its id; collect with task_output or stop with task_kill."
}
},
"required": [