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Merge remote-tracking branch 'origin/master' into worktree-windows-runtime

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# Conflicts:
#	packages/session-persistence/session-persistence-jsonl/README.md
#	packages/session-persistence/session-persistence-jsonl/src/index.ts
#	packages/session-persistence/session-persistence-jsonl/tests/jsonl.spec.ts
#	packages/support/loader-smoke/tests/loader-smoke.spec.ts
This commit is contained in:
imccyu
2026-07-19 17:52:36 +08:00
parent 0c1bc50b98 b3c4b732d8
commit 3e9cb70c78
201 changed files with 9153 additions and 915 deletions
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2
.agents/skills/dsh-pre-push-checks/SKILL.md
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@@ -54,7 +54,7 @@ pnpm run test:snapshot
Run built-bin smoke tests after `pnpm run build` when app packages, app boot, package runtime imports, bin entries, loader behavior, or published artifact paths change.
```sh
pnpm exec vitest run --config vitest.e2e.config.ts packages/examples/stdio-demo/tests/built-bin.e2e.ts packages/examples/acp-demo/tests/built-bin.e2e.ts
pnpm exec vitest run --config vitest.e2e.config.ts packages/examples/stdio-demo/tests/built-bin.e2e.ts packages/examples/cli-demo/tests/built-bin.e2e.ts packages/examples/acp-demo/tests/built-bin.e2e.ts
```
Run real e2e when behavior depends on a real model/API, tool-use loop, ACP integration, prompt injection, or end-to-end agent UX. If `.env` is available, use it; do not print secrets.

7
AGENTS.md
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@@ -28,7 +28,7 @@ packages/ @deepseek-ai/dsh-<pkg> workspaces at packages/<group>/<pkg>/
hooks/ Claude Code / Codex hook bridges + shared wire-protocol library
session-persistence/ persistence seam + JSONL/SQLite backends
ui/ ACP/stdio/TUI/JSON-RPC bridges; boot, approval, interaction plugins
examples/ demo bundles (agent-spine + stdio/ACP/JSON-RPC bins) leaves load
examples/ demo bundles (agent-spine + stdio/CLI/ACP/JSON-RPC bins) leaves load
support/ dev/test infrastructure packages
util/ zero-dependency utilities
python/ Python SDK and bundled runtime (see python/README.md)
@@ -47,7 +47,7 @@ pnpm install # pnpm workspaces, node ^22.19 || >=24
pnpm run test # vitest unit tests
pnpm run test:coverage # THE gating test run: per-file 100% coverage on packages/*/*/src
pnpm run test:e2e # real-API tests; self-skip without DEEPSEEK_API_KEY
pnpm run test:snapshot # keyless ACP replay vs goldens; filter: -t <name>
pnpm run test:snapshot # keyless ACP/headless/TUI replay vs goldens; filter: -t <name>
pnpm run test:snapshot:record # re-record goldens (needs key)
pnpm run typecheck
pnpm run lint
@@ -58,6 +58,7 @@ pnpm run doc-sync # all documentation gates; see the doc-sync script in pa
pnpm run website:build # VitePress build (doubles as the site's dead-link check)
pnpm run demo:echo # mock-model REPL, no key needed
pnpm run demo:repl # real REPL coding agent (needs DEEPSEEK_API_KEY)
pnpm run demo:headless -- "task" # one-shot agent (needs DEEPSEEK_API_KEY)
pnpm run demo:tui # full-screen TUI coding agent (needs DEEPSEEK_API_KEY)
pnpm run demo:cordis # self-referential demo: the agent modifies its own runtime (needs key)
pnpm run demo:acp # ACP server agent (needs DEEPSEEK_API_KEY)
@@ -88,7 +89,7 @@ printf '%s\n' "$out" | grep -q '\[tool call\] echo({"text":"ci smoke"})'
printf '%s\n' "$out" | grep -q '\[tool result\] ECHO: CI SMOKE'
test -n "$(find .sessions -path '.sessions/cwd-*/main-session-*.jsonl' -type f -print -quit)"
rm -rf .sessions
pnpm exec vitest run --config vitest.e2e.config.ts packages/examples/stdio-demo/tests/built-bin.e2e.ts packages/examples/acp-demo/tests/built-bin.e2e.ts packages/ui/jsonrpc/tests/built-scope-carrier.e2e.ts packages/workflow/workflow-workerthread/tests/built-worker.e2e.ts packages/code-runtime/code-runtime-worker/tests/built-lib.e2e.ts
pnpm exec vitest run --config vitest.e2e.config.ts packages/examples/stdio-demo/tests/built-bin.e2e.ts packages/examples/cli-demo/tests/built-bin.e2e.ts packages/examples/acp-demo/tests/built-bin.e2e.ts packages/ui/jsonrpc/tests/built-scope-carrier.e2e.ts packages/workflow/workflow-workerthread/tests/built-worker.e2e.ts packages/code-runtime/code-runtime-worker/tests/built-lib.e2e.ts
```
`test:coverage`, not `test`, is the gate ([why](docs/testing.md)); report only commands actually run.

4
README.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
README.md: aaa129272ee9346cebe2d59774d742fbe21af80a
README.zh.md: 42f2ed9b57bf008210042083977b7adbb7f1ab0e
README.md: ef9a3a8832d1eaa35ec5f0fed1780ab27e8ff37c
README.zh.md: a30d6db4b04f23559c36a7aba80b4feb2962a1c6

1
README.md
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@@ -14,6 +14,7 @@ pnpm run test # vitest
pnpm run demo:echo # keyless mock-model REPL
pnpm run demo:repl # readline coding agent (needs DEEPSEEK_API_KEY)
pnpm run demo:tui # full-screen TUI coding agent (needs DEEPSEEK_API_KEY)
pnpm run demo:headless -- "task" # one-shot coding agent (needs DEEPSEEK_API_KEY)
pnpm run demo:cordis # self-referential agent demo (needs DEEPSEEK_API_KEY)
pnpm run demo:acp # ACP server agent demo (needs DEEPSEEK_API_KEY)
```

1
README.zh.md
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@@ -14,6 +14,7 @@ pnpm run test # vitest
pnpm run demo:echo # keyless mock-model REPL
pnpm run demo:repl # readline coding agent (needs DEEPSEEK_API_KEY)
pnpm run demo:tui # full-screen TUI coding agent (needs DEEPSEEK_API_KEY)
pnpm run demo:headless -- "task" # one-shot coding agent (needs DEEPSEEK_API_KEY)
pnpm run demo:cordis # self-referential agent demo (needs DEEPSEEK_API_KEY)
pnpm run demo:acp # ACP server agent demo (needs DEEPSEEK_API_KEY)
```

2
docs/AGENTS.md
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@@ -27,7 +27,7 @@ Placement: bugs → postmortems; rationale → RFCs; procedures → cookbooks; t
- **Document current state, not change history.** Avoid "previously/now/no longer", PRs, commits, and stack positions in durable prose; name the live mechanism. Put change stories in commits, PRs, RFCs, or postmortems.
- **Write an RFC in the same PR for decisions a maintainer may reasonably revisit.** Mechanical or self-evident changes need none ([when to write one](rfc/README.md)).
- **One physical line per paragraph** (`verify-md-wrap`): use editor soft-wrap. Code blocks, tables, and list structure keep their formatting; code comments stay under the linter's column limit.
- **Fenced `ts` blocks must compile** (`doc-typecheck`); a pasted type declaration and its original JSDoc are fenced ` ```ts type-equiv ` and registered in the manifest so neither can drift ([mechanics](development.md#documenting-types-verbatim-ts-type-equiv)).
- **Fenced `ts` blocks must compile** (`doc-typecheck`); a pasted type declaration and its original JSDoc use ` ```ts type-equiv `, while a body-stripped public class declaration uses ` ```ts public-api `; register either in the manifest so neither can drift ([mechanics](development.md#documenting-types-verbatim-ts-type-equiv)).
- **The [core-data-structures catalog](core-data-structures/core.md) updates in the same change** that reshapes a documented type. `verify-type-equiv` catches drifted pastes, not never-documented new types ([what counts as core](core-data-structures/core.md#what-counts-as-core)).
- **Bilingual pairs update together**: editing either side obligates the counterpart and a re-record in the same change ([i18n contract](i18n/README.md)).
- **Comments and JSDoc state complete contracts, not reasoning transcripts.** Preserve behavior, conditions, timing, modality, exceptions, consequences, and non-obvious orientation; delete implementation narration, test walkthroughs, review analysis, and code restatement. Keep the local contract and link to its owning rationale. Use [dsh-prose-standard](../.agents/skills/dsh-prose-standard/SKILL.md) for required coverage, decision rules, and examples.

10
docs/agent-lifecycle.md
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@@ -32,6 +32,11 @@ sequenceDiagram
LLM-->>Driver: StreamChunk*
Driver->>Session: <code>assistant/chunk</code>*
Session-->>SDK: <code>session/event</code> <code>assistant/chunk</code>*
alt final adapter or terminal in-band request failure
Driver->>Session: <code>step/end</code>
Driver->>Hooks: <code>agent/request-error</code> waterfall
Hooks-->>Driver: retry in a new step or preserve the original error
else model request succeeded
Driver->>Hooks: <code>agent/step-result</code> waterfall
Driver->>Session: <code>assistant/message</code>
Driver->>Tools: classify pending call by executionMode
@@ -46,9 +51,12 @@ sequenceDiagram
Driver->>Session: <code>tool/result</code>
end
end
Driver->>Session: post-tool context and steering
Driver->>Hooks: <code>agent/post-step</code> serial checkpoint
Driver->>Session: <code>step/end</code>
Driver->>Hooks: <code>agent/turn-continuation</code> waterfall
Driver->>Hooks: <code>agent/turn-stop</code> serial terminal checkpoint
end
Driver->>Session: <code>turn/end</code>
Driver->>Persistence: <code>session/flush</code> parallel checkpoint
Driver-->>SDK: <code>agent/status</code> idle
@@ -56,6 +64,8 @@ sequenceDiagram
The `assistant/message` edge records every successful provider call, including content-less and `max-tokens` finishes. Empty content stays out of derived history while the durable anchor retains usage and exact chunk provenance, including an explicit empty source set.
`dsh-compact-basic` uses `agent/post-step` for pressure after those durable facts and `agent/request-error` only for canonical context overflow. Recovery compacts between the closed failed step and a fresh retry step, and returns retry only when the surface replacement generation advances; otherwise the original request error remains authoritative.
SDK users that need replayable transcript data should consume `session/event`; `agent/*` is the live coordination surface for queue/status, prompt interception, request shaping, steering, continuation, and errors.
Maintenance mode: curated Mermaid sequence; exact event signatures live in the generated Cordis catalog.

50
docs/architecture.md
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@@ -4,7 +4,7 @@ The **DeepSeek Harness SDK** builds agent harnesses on Cordis. The principle is
## Overview
A harness is one [Cordis](cordis-primer.md) context. Packages contribute service keys, typed events, and disposable registrations: services expose stable calls (`ctx.llm`, `ctx.tools`, `ctx.sessions`), events provide interception and notifications (`agent/request`, `tools/pre-execute`, `session/event`), and registrations install prompt sections, tools, providers, adapters, or listeners.
A harness is one [Cordis](cordis-primer.md) context. Packages add services (`ctx.llm`, `ctx.tools`, `ctx.sessions`), typed events (`agent/request`, `tools/pre-execute`, `session/event`), and disposable prompt, tool, provider, adapter, and listener registrations.
`packages/core/` groups the default agent flow; surrounding capabilities are equally first-class Cordis plugins.
@@ -16,7 +16,7 @@ A harness is one [Cordis](cordis-primer.md) context. Packages contribute service
| `ctx.sessions` | `dsh-session` | in-memory event-sourced sessions |
| `ctx.systemPrompt` | `dsh-system-prompt` | ordered prompt sections, tool schemas, and prompt variables |
| `ctx.tools` | `dsh-tools` | tool registry and [execution pipeline](tool-execution-pipeline.md) |
| `ctx.agents` | `dsh-agent` | live agent registry, public `Agent` handle, `agent/*` events |
| `ctx.agents` | `dsh-agent` | live agents, delegated creation, `agent/*` events, and process-local initiator scope |
| `ctx.agentLoop` | `dsh-agent-loop` | concrete `Agent` driver |
### Capability Services
@@ -80,33 +80,43 @@ forever:
assemble system prompt and tool schemas
agent/session-prefix (first step)
agent/pre-step
'step/start'
snapshot the derived messages (the reconstruction boundary)
'step/start'
agent/request (config only) -> log request/header -> llm/stream (frozen)
on final adapter-path or terminal in-band failure:
'step/end'
agent/request-error(original error, consecutive retry attempt, signal)
retry in the next numbered step or preserve the original error
otherwise:
'assistant/chunk'
agent/step-result
'assistant/message' (transformed content or empty success anchor after step-result rejection)
schedule tool calls by ctx.tools.executionMode:
exclusive -> one-call barrier
parallel -> rolling pool, <= maxParallelToolCalls in flight; reclassify before start
each start -> 'tool/call' -> ordered tools/pre-execute -> concurrent tools/execute
each model-order result -> ordered tools/post-execute -> 'tool/result'
append accepted tool-batch context after all recorded results, then steering
'step/end'
agent/turn-continuation
agent/turn-stop (terminal policy)
stop unless tools or continuation policy ask for another step
agent/step-result
'assistant/message' (transformed content or empty success anchor after step-result rejection)
schedule tool calls by ctx.tools.executionMode:
exclusive -> one-call barrier
parallel -> rolling pool, <= maxParallelToolCalls in flight; reclassify before start
each start -> 'tool/call' -> ordered tools/pre-execute -> concurrent tools/execute
each model-order result -> ordered tools/post-execute -> 'tool/result'
append accepted tool-batch context after all recorded results, then steering
agent/post-step
'step/end'
agent/turn-continuation
agent/turn-stop (terminal policy)
stop unless tools or continuation policy ask for another step
'turn/end'
checkpoint persistence and notify idle/running status
```
Each step assembles ordered prompt sections, tool schemas, and `{{name}}` variables; unknown or valueless references fail the turn. `dsh-system-prompt` owns the harness identity and default persona, which an agent scope may shadow. The loop supplies `model` and `cwd` ([prompt-ownership RFC](rfc/implemented/architecture/2026-07-05-prompt-variables-and-tool-guidance-ownership.md)).
Context accepted during tool execution—including async `agent.inject()` notices and post-tool `additionalContexts`—waits for settlement, then follows every recorded result. Successful batches preserve call/result adjacency; interrupted batches drain that context before turn closure. Steering drains between steps; ordinary leftover steering becomes queued input. Terminal `agent/turn-stop` runs after continuation and steering folding, stays authoritative through turn close and flush, and discards later steering while preserving queued prompts.
Tool-time context—including async `agent.inject()` notices and post-tool `additionalContexts`—settles, then follows recorded results. Steering drains before `agent/post-step`, which observes durable output, results, context, and steering before signal closure. Leftovers become queued input. Terminal `agent/turn-stop` runs after continuation and steering folding, stays authoritative through turn close and flush, and discards later steering but preserves queued prompts.
`dsh-compact-basic` handles pressure and canonical overflow at these checkpoints; retry requires a balanced surface replacement ([RFC](rfc/implemented/architecture/2026-07-10-after-call-compaction-pressure-and-overflow-recovery.md)).
### Failure Boundaries
The turn is the containment boundary. A throwing listener, adapter error finish, or failed step ends it with an error reason and reports `agent/error` without killing the driver. `cancel()` clears queued and steering work, aborts the active model/tool boundary when possible, and records the turn end. Disposal stops the loop, awaits quiescence, unregisters the agent, and drains service disposers.
The turn is the containment boundary. Final adapter-path and terminal in-band failures close the step before `agent/request-error`; retry opens a numbered step; otherwise, the provider error survives. Attempts reset on success.
Other failures use `agent/error`. Cancellation and disposal beat recovery; undispatched model tool calls receive synthetic `tool/call` and `ABORTED` result pairs before `turn/end`. `cancel()` clears queues and aborts active work; disposal awaits quiescence before unregistering.
Every session event is turn-enclosed. Reloading preserves an interrupted tail and closes it with a synthetic `interrupted` turn end. Failures after durable turn close report only through `agent/error` because no safe in-turn position remains. Each turn has one `TurnEndReason`; [TurnEndReasonMap](core-data-structures/session.md#why-a-turn-ended-turnendreasonmap) owns the variants.
@@ -116,7 +126,7 @@ Every session event is turn-enclosed. Reloading preserves an interrupted tail an
### Agent Scope
Every live agent owns a scoped `agent.ctx`. Its registrations shadow globals, receive only that agent's dispatches, and unwind with it; async effects such as background-task cleanup are awaited. `CreateAgentOptions.setup(agentCtx)` composes the scope before publication. Typed resolvers derive carrier checks from merged `Events` signatures and `scopeTarget` ([semantic-gates RFC](rfc/implemented/process/2026-07-14-typescript-program-backed-semantic-gates.md)). See the [agent-scope RFC](rfc/implemented/architecture/2026-07-08-agent-scope-contexts.md) and [subagent composition controls](rfc/implemented/feature/2026-07-12-subagent-persona-tool-filter-and-depth.md).
Every live agent owns a scoped `agent.ctx`. Its registrations shadow globals, receive only that agent's dispatches, and unwind with it; async effects such as background-task cleanup are awaited. `CreateAgentOptions.setup(agentCtx)` composes the scope before publication. Typed resolvers derive carrier checks from merged `Events` signatures and `scopeTarget` ([semantic-gates RFC](rfc/implemented/process/2026-07-14-typescript-program-backed-semantic-gates.md)). See the [agent-scope RFC](rfc/implemented/architecture/2026-07-08-agent-scope-contexts.md) and [subagent composition controls](rfc/implemented/feature/2026-07-12-subagent-persona-tool-filter-and-depth.md). `AgentLoop` runs drivers inside `ctx.agents.withInitiator()`; private orchestration derives `agent.session`; other identities stay explicit ([RFC](rfc/implemented/architecture/2026-07-15-agent-initiator-scope.md)).
## State
@@ -146,7 +156,7 @@ Some seams bend the template deliberately: LLM combines interface and consumer b
### Bundles And Apps
`dsh-agent-spine-demo` bundles the default spine ([README](../packages/examples/agent-spine-demo/README.md)). `dsh-stdio-demo` adds a terminal front door that selects `dsh-tui` for interactive terminals and line-oriented `dsh-stdio` for pipes; `dsh-acp-demo` adds stdout-pure ACP over JSON-RPC ([ui/](../packages/ui/README.md)). `dsh-jsonrpc-agent` boots external `cordis.yml`; the Python SDK supplies its default only without an explicit config channel and drives `dsh-jsonrpc` over line-delimited JSON-RPC ([Python SDK](../python/README.md)). Deployments remain thin leaves with swappable backends and optional product tools ([examples/](../examples/AGENTS.md), [runnable wirings](cookbook/extension-cookbook.md#runnable-wirings), [graph atlas](graph-atlas.md)).
`dsh-agent-spine-demo` bundles the default spine ([README](../packages/examples/agent-spine-demo/README.md)). `dsh-stdio-demo` selects `dsh-tui` for interactive terminals and line-oriented `dsh-stdio` for pipes; `dsh-cli-demo` runs one persisted headless turn with format-pure stdout; `dsh-acp-demo` adds stdout-pure ACP over JSON-RPC ([ui/](../packages/ui/README.md)). `dsh-jsonrpc-agent` boots external `cordis.yml`; the Python SDK supplies its default only without an explicit config channel and drives `dsh-jsonrpc` over line-delimited JSON-RPC ([Python SDK](../python/README.md)). Deployments remain thin leaves with swappable backends and optional product tools ([examples/](../examples/AGENTS.md), [runnable wirings](cookbook/extension-cookbook.md#runnable-wirings), [graph atlas](graph-atlas.md)).
### Where New Behavior Goes
@@ -160,7 +170,7 @@ New behavior should attach to a documented extension point; changing the shipped
| Add a long-running/background capability | register the work on `ctx.tasks`; the generic `task_*` tools collect/stop it |
| Add filesystem access or policy | implement a `ctx.fs` provider or listen on `fs/*` policy events |
| Confine spawned processes | a `ctx.sandbox` backend; consumers wrap their argv before spawning |
| Intercept prompts, requests, tool use, or continuation | listen on the relevant `agent/*` or `tools/*` waterfall; use serial `agent/turn-stop` for a monotonic terminal stop |
| Intercept prompts, requests, model completion/failure, tool use, or continuation | listen on the relevant `agent/*` or `tools/*` event; use serial `agent/turn-stop` for a monotonic terminal stop |
| Add a session-stable request prefix outside history | compose it on `agent/session-prefix`, once per loop instance; logged on the request header |
| Add UI or editor integration | drive `ctx.agents` and render from `session/event` |
| Add durable session state | add a `SessionEventMap` member and render/replay from the log |

11
docs/capability-seams.md
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@@ -19,6 +19,7 @@ flowchart LR
pkg_session["session"]
svc_sessions["ctx.sessions<br/>In-memory session store"]
pkg_agent["agent"]
pkg_cli_demo["cli-demo"]
pkg_session_persistence["session-persistence"]
pkg_session_query["session-query"]
pkg_subagent_inprocess["subagent-inprocess"]
@@ -48,7 +49,7 @@ flowchart LR
pkg_skill["skill"]
svc_skills["ctx.skills<br/>Skill provider registry"]
pkg_skill_local["skill-local"]
svc_agents["ctx.agents<br/>Agent registry"]
svc_agents["ctx.agents<br/>Agent service"]
svc_agentLoop["ctx.agentLoop<br/>Concrete loop driver"]
pkg_agent_spine_demo["agent-spine-demo"]
pkg_bash["bash"]
@@ -145,6 +146,7 @@ flowchart LR
svc_agentLoop --> pkg_agent_spine_demo
svc_agents --> pkg_acp
svc_agents --> pkg_agent_loop
svc_agents --> pkg_cli_demo
svc_agents --> pkg_invariants
svc_agents --> pkg_stdio_demo
svc_agents --> pkg_subagent_inprocess
@@ -168,6 +170,7 @@ flowchart LR
svc_sessionPersistence --> pkg_tool_bash
svc_sessions --> pkg_agent
svc_sessions --> pkg_agent_loop
svc_sessions --> pkg_cli_demo
svc_sessions --> pkg_invariants
svc_sessions --> pkg_session_persistence
svc_sessions --> pkg_session_query
@@ -205,14 +208,14 @@ flowchart LR
| --- | --- | --- | --- | --- | --- | --- |
| `ctx.llm` | `seam` | [`llm`](../packages/llm/llm) | [`llm-deepseek`](../packages/llm/llm-deepseek), [`llm-pi-ai`](../packages/llm/llm-pi-ai), [`llm-replay`](../packages/support/llm-replay) | [`agent-loop`](../packages/core/agent-loop), [`compact-basic`](../packages/compact/compact-basic) | - | Adapters register provider implementations; the loop and compaction call the provider-neutral stream service. |
| `ctx.tokenMeter` | `core` | [`token-meter`](../packages/llm/token-meter) | - | [`compact-basic`](../packages/compact/compact-basic) | - | Owns isolated per-session replay folds; pressure consumers share immutable revisioned measurements. |
| `ctx.sessions` | `core` | [`session`](../packages/core/session) | - | [`agent-loop`](../packages/core/agent-loop), [`agent`](../packages/core/agent), [`session-persistence`](../packages/session-persistence/session-persistence), [`session-query`](../packages/session-query/session-query), [`subagent-inprocess`](../packages/subagent/subagent-inprocess), [`invariants`](../packages/support/invariants) | - | Owns append-only Session instances and emits the durable session event feed. |
| `ctx.sessions` | `core` | [`session`](../packages/core/session) | - | [`agent-loop`](../packages/core/agent-loop), [`agent`](../packages/core/agent), [`cli-demo`](../packages/examples/cli-demo), [`session-persistence`](../packages/session-persistence/session-persistence), [`session-query`](../packages/session-query/session-query), [`subagent-inprocess`](../packages/subagent/subagent-inprocess), [`invariants`](../packages/support/invariants) | - | Owns append-only Session instances and emits the durable session event feed. |
| `ctx.sessionPersistence` | `seam` | [`session-persistence`](../packages/session-persistence/session-persistence) | [`session-persistence-jsonl`](../packages/session-persistence/session-persistence-jsonl), [`session-persistence-sqlite`](../packages/session-persistence/session-persistence-sqlite) | [`agent-loop`](../packages/core/agent-loop), [`tool-bash`](../packages/bash/tool-bash), [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex), [`acp`](../packages/ui/acp), [`session-query`](../packages/session-query/session-query) | - | Backends persist the same SessionEvent vocabulary; apps choose a backend at composition time. |
| `ctx.sessionQuery` | `seam` | [`session-query`](../packages/session-query/session-query) | - | - | - | Resolves live and optional persisted logs into one logical corpus for exact reads and relationship traces. |
| `ctx.systemPrompt` | `core` | [`system-prompt`](../packages/core/system-prompt) | - | [`agent-loop`](../packages/core/agent-loop), [`tools`](../packages/core/tools), [`tool-fs`](../packages/fs/tool-fs), [`tool-web`](../packages/web/tool-web) | - | Collects prompt sections and model-facing tool schemas for each step. |
| `ctx.tools` | `core` | [`tools`](../packages/core/tools) | - | [`agent-loop`](../packages/core/agent-loop), [`tool-ask-user`](../packages/ui/tool-ask-user), [`tool-bash`](../packages/bash/tool-bash), [`tool-cordis`](../packages/cordis/tool-cordis), [`tool-fs`](../packages/fs/tool-fs), [`tool-skill`](../packages/skill/tool-skill), [`tool-subagent`](../packages/subagent/tool-subagent), [`tool-todo`](../packages/todo/tool-todo), [`tool-web`](../packages/web/tool-web), [`acp`](../packages/ui/acp) | - | Registers capabilities, owns Code Mode transport, and routes calls through pre-policy, monotonic guards, around dispatch, post-policy, and final-result observation. |
| `ctx.userInteraction` | `seam` | [`user-interaction`](../packages/ui/user-interaction) | [`stdio-demo`](../packages/examples/stdio-demo), [`acp`](../packages/ui/acp) | [`tool-ask-user`](../packages/ui/tool-ask-user), [`stdio-demo`](../packages/examples/stdio-demo), [`acp`](../packages/ui/acp) | - | UI front doors provide the active human-answer provider; tool-ask-user pauses a tool call on the provider-neutral ask() promise. |
| `ctx.skills` | `seam` | [`skill`](../packages/skill/skill) | [`skill-local`](../packages/skill/skill-local) | [`tool-skill`](../packages/skill/tool-skill) | - | Merges provider skill catalogs; tool-skill renders the session-prefix catalog and loads complete skill bodies. |
| `ctx.agents` | `core` | [`agent`](../packages/core/agent) | - | [`agent-loop`](../packages/core/agent-loop), [`acp`](../packages/ui/acp), [`subagent-inprocess`](../packages/subagent/subagent-inprocess), [`stdio-demo`](../packages/examples/stdio-demo), [`invariants`](../packages/support/invariants) | - | Owns live Agent handles and the create/resume factory seam. |
| `ctx.agents` | `core` | [`agent`](../packages/core/agent) | - | [`agent-loop`](../packages/core/agent-loop), [`acp`](../packages/ui/acp), [`cli-demo`](../packages/examples/cli-demo), [`subagent-inprocess`](../packages/subagent/subagent-inprocess), [`stdio-demo`](../packages/examples/stdio-demo), [`invariants`](../packages/support/invariants) | - | Owns live Agent handles, the create/resume factory seam, and process-local initiator propagation. |
| `ctx.agentLoop` | `bundle` | [`agent-loop`](../packages/core/agent-loop) | - | [`agent-spine-demo`](../packages/examples/agent-spine-demo) | - | The one concrete loop plugin; extension packages depend on dsh-agent events and services, not on this package. |
| `ctx.bash` | `seam` | [`bash`](../packages/bash/bash) | [`bash-local`](../packages/bash/bash-local), [`bash-sandbox`](../packages/bash/bash-sandbox) | [`tool-bash`](../packages/bash/tool-bash), [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex) | - | The model-facing bash tools and hook bridges consume this seam; sandboxed or remote executors replace bash-local without touching them. |
| `ctx.bashEnv` | `core` | [`tool-bash`](../packages/bash/tool-bash) | - | - | - | Plugins declare effect-scoped DSH_* facts; tool-bash collects one trusted snapshot per execution and the executor rebuilds the namespace. |
@@ -221,7 +224,7 @@ flowchart LR
| `ctx.permission` | `core` | [`permission`](../packages/ui/permission) | - | [`acp`](../packages/ui/acp) | - | User-facing preset table (`workspace-write`/`danger-full-access`) bundling the sandbox-mode and approval-policy knobs; a switch writes one `permission/preset` event through to both knob events. |
| `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) | [`tool-fs`](../packages/fs/tool-fs) | [`fs-policy`](../packages/fs/fs-policy) | tool-fs executes read/write/edit through ctx.fs; 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 currently consumes the pre-step event directly; a model-facing compact tool remains deferred. |
| `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) | - | Providers implement transports; tool-subagent exposes one configured provider as a model-facing tool name. |
| `ctx.tasks` | `core` | [`tasks`](../packages/tasks/tasks) | - | [`tool-bash`](../packages/bash/tool-bash), [`tool-subagent`](../packages/subagent/tool-subagent), [`tool-tasks`](../packages/tasks/tool-tasks) | - | Producers (tool-bash background commands, tool-subagent background delegations) register running work; tool-tasks is the model-facing control surface that reads, lists, and kills it. |
| `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. |

46
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@@ -99,7 +99,7 @@ export interface Config {
}
```
Depends on: [`AgentOptions`](../packages/core/agent/src/index.ts) · [`SessionId`](../packages/core/session/src/index.ts)
Depends on: [`AgentOptions`](core-data-structures/core.md) · [`SessionId`](core-data-structures/core.md)
Source: [`packages/core/agent-loop/src/index.ts:369`](../packages/core/agent-loop/src/index.ts)
@@ -206,6 +206,42 @@ Depends on: [`LocalConfig`](#deepseek-aidsh-bash-local) · [`SandboxMode`](core-
Source: [`packages/bash/bash-sandbox/src/index.ts:27`](../packages/bash/bash-sandbox/src/index.ts)
## `@deepseek-ai/dsh-cli-demo`
```ts config-catalog
/** App config forwarded to the spine, configured agent, and JSONL backend. */
export interface Config {
/** Provider route for the configured agent. */
provider: string
/** Model name for the configured agent; a matching adapter must be registered. */
model: string
/** Bundled agent-loop concurrency cap; `1` is serial and omission uses its default. */
maxParallelToolCalls?: number
/** Deployment persona forwarded to the system-prompt plugin. */
persona?: string
/** Explicit model-facing tool order forwarded to the system-prompt plugin. */
toolOrder?: string[]
/** Tool-registry presentation config forwarded through agent-spine-demo. */
tools?: ToolsConfig
/** DeepSeek Harness home directory exposed to bash and used for local skill discovery. */
dshHome?: string
/** Directory the JSONL session backend writes under. Defaults to `./.sessions`. */
persistenceRoot?: string
/** Skill registry, local-provider, and model-facing consumer config. */
skills?: agentCore.SkillConfig
/** Model-facing bash tool config forwarded through agent-spine-demo. */
toolBash?: NonNullable<agentCore.Config['toolBash']>
/** Generic background-task control-tool config forwarded through agent-spine-demo. */
toolTasks?: NonNullable<agentCore.Config['toolTasks']>
/** Controls automatic AGENTS.md/CLAUDE.md loading; configure a byte budget or set `false`. */
workspaceContext: agentCore.Config['workspaceContext']
}
```
Depends on: [`agentCore`](../packages/examples/agent-spine-demo/src/index.ts) · [`ToolsConfig`](#deepseek-aidsh-tools)
Source: [`packages/examples/cli-demo/src/index.ts:22`](../packages/examples/cli-demo/src/index.ts)
## `@deepseek-ai/dsh-code-runtime-worker`
```ts config-catalog
@@ -261,7 +297,9 @@ export interface BasicCompactConfig {
maxTokens?: number
/** Extra attempts after the first compaction when pressure remains above threshold. Defaults to `1`. */
compactionRetries?: number
/** Enable the automatic `agent/pre-step` pressure listener. Defaults to `true`. */
/** Maximum retries after canonical context overflow; `0` disables recovery. Defaults to `1`. */
maxOverflowRetries?: number
/** Enable automatic post-step pressure and overflow-recovery listeners. Defaults to `true`. */
auto?: boolean
}
```
@@ -956,7 +994,7 @@ export interface Config {
}
```
Source: [`packages/context/time-context/src/index.ts:20`](../packages/context/time-context/src/index.ts)
Source: [`packages/context/time-context/src/index.ts:19`](../packages/context/time-context/src/index.ts)
## `@deepseek-ai/dsh-token-meter`
@@ -1108,7 +1146,7 @@ export interface Config {
}
```
Depends on: [`AgentOptions`](../packages/core/agent/src/index.ts)
Depends on: [`AgentOptions`](core-data-structures/core.md)
Source: [`packages/subagent/tool-subagent/src/index.ts:23`](../packages/subagent/tool-subagent/src/index.ts)

4
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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
extension-cookbook.md: d271ceee208e276d97188a6ebbe91e1e90a4219f
extension-cookbook.zh.md: bdd2c5f0861aa55c6f0104764a34784e5e834d10
extension-cookbook.md: c6bf6ddd4bf0da8bd7377ab57e779750b72bd25e
extension-cookbook.zh.md: dcc188b7d3ac44f5d86253c20147e95da0bea648

4
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@@ -87,7 +87,7 @@ export function apply(ctx: Context) {
## Runnable wirings
Five runnable leaves load their plugin trees from `cordis.yml`: [`examples/echo-agent`](../../examples/echo-agent) (mock model + echo tool, `pnpm run demo:echo`), [`examples/repl-agent`](../../examples/repl-agent) (DeepSeek V4 + coding tools through a line-oriented readline REPL, `pnpm run demo:repl`), [`examples/tui-agent`](../../examples/tui-agent) (the same coding composition through full-screen pi-tui, `pnpm run demo:tui`), [`examples/cordis-agent`](../../examples/cordis-agent) (self-inspection and dynamic plugin mounting, `pnpm run demo:cordis`), and [`examples/acp-agent`](../../examples/acp-agent) (an ACP server over JSON-RPC stdio, `pnpm run demo:acp`). The terminal leaves load [`@deepseek-ai/dsh-stdio-demo`](../../packages/examples/stdio-demo), the ACP leaf loads [`@deepseek-ai/dsh-acp-demo`](../../packages/examples/acp-demo), and both app packages share the spine through [`@deepseek-ai/dsh-agent-spine-demo`](../../packages/examples/agent-spine-demo).
Six runnable leaves load their plugin trees from `cordis.yml`: [`examples/echo-agent`](../../examples/echo-agent) (mock model + echo tool, `pnpm run demo:echo`), [`examples/repl-agent`](../../examples/repl-agent) (DeepSeek V4 + coding tools through a line-oriented readline REPL, `pnpm run demo:repl`), [`examples/tui-agent`](../../examples/tui-agent) (the same coding composition through full-screen pi-tui, `pnpm run demo:tui`), [`examples/headless-agent`](../../examples/headless-agent) (the same capability class behind a one-shot task and DSH-native output, `pnpm run demo:headless -- "task"`), [`examples/cordis-agent`](../../examples/cordis-agent) (self-inspection and dynamic plugin mounting, `pnpm run demo:cordis`), and [`examples/acp-agent`](../../examples/acp-agent) (an ACP server over JSON-RPC stdio, `pnpm run demo:acp`). The terminal leaves load [`@deepseek-ai/dsh-stdio-demo`](../../packages/examples/stdio-demo), the headless leaf loads [`@deepseek-ai/dsh-cli-demo`](../../packages/examples/cli-demo), the ACP leaf loads [`@deepseek-ai/dsh-acp-demo`](../../packages/examples/acp-demo), and all three app packages share [`@deepseek-ai/dsh-agent-spine-demo`](../../packages/examples/agent-spine-demo).
## The feature → mechanism map
@@ -102,7 +102,7 @@ Every product feature maps to a listener on a documented extension seam — the
| `/loop` | on the `turn/end` session event, `send()` the next iteration; or force-continue |
| Dynamic workflow | `ctx.workflows` + the worker-thread engine + the `workflow` tool; structured in-process children enforce output with scoped prompt/tool registrations, a monotonic tool guard, final `tools/result` commit (including enclosing `run_code`), and terminal `agent/turn-stop` |
| Queued + steering messages | core `Agent.send()` / `Agent.steer()` |
| Context compaction (auto + manual) | the `ctx.compact` seam + a backend (`dsh-compact-basic`) on the serial `agent/pre-step` seam; auto = token-pressure check before each step; a manual trigger invokes the same `ctx.compact` routine ([compaction RFC](../rfc/implemented/feature/2026-06-18-compaction-capability-seam.md) — the model-facing `/compact` consumer tool is deferred) |
| Context compaction (auto + manual) | the `ctx.compact` seam + `dsh-compact-basic`; automatic pressure runs on serial `agent/post-step`, canonical overflow recovery runs on `agent/request-error`, and manual callers use the same compact service ([compaction RFC](../rfc/implemented/feature/2026-06-18-compaction-capability-seam.md) — the model-facing `/compact` consumer tool is deferred) |
| System prompt configurability | `ctx.systemPrompt.section()` with ordering and scope-local shadowing |
| AGENTS.md (root) | a section provider reading the file |
| AGENTS.md (subdir, on-touch) + file-change notices | `agent.inject()` from a watcher / tool-result listener |

4
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@@ -87,7 +87,7 @@ export function apply(ctx: Context) {
## 可运行的组装示例
五个可运行叶子从 `cordis.yml` 加载各自的插件树：[`examples/echo-agent`](../../examples/echo-agent)（mock 模型 + echo 工具，`pnpm run demo:echo`）、[`examples/repl-agent`](../../examples/repl-agent)（DeepSeek V4 + coding 工具，通过面向行的 readline REPL 交互，`pnpm run demo:repl`）、[`examples/tui-agent`](../../examples/tui-agent)（通过全屏 pi-tui 复用相同的 coding 组装，`pnpm run demo:tui`）、[`examples/cordis-agent`](../../examples/cordis-agent)（自我检查和动态插件挂载，`pnpm run demo:cordis`）与 [`examples/acp-agent`](../../examples/acp-agent)（通过 JSON-RPC stdio 暴露的 ACP 服务器，`pnpm run demo:acp`）。终端叶子加载 [`@deepseek-ai/dsh-stdio-demo`](../../packages/examples/stdio-demo)，ACP 叶子加载 [`@deepseek-ai/dsh-acp-demo`](../../packages/examples/acp-demo)，两个 app 包通过 [`@deepseek-ai/dsh-agent-spine-demo`](../../packages/examples/agent-spine-demo) 共享主干。
六个可运行叶子从 `cordis.yml` 加载各自的插件树：[`examples/echo-agent`](../../examples/echo-agent)（mock 模型 + echo 工具，`pnpm run demo:echo`）、[`examples/repl-agent`](../../examples/repl-agent)（DeepSeek V4 + coding 工具，通过面向行的 readline REPL 交互，`pnpm run demo:repl`）、[`examples/tui-agent`](../../examples/tui-agent)（通过全屏 pi-tui 复用相同的 coding 组装，`pnpm run demo:tui`）、[`examples/headless-agent`](../../examples/headless-agent)（同类能力通过单次任务和 DSH 原生输出运行，`pnpm run demo:headless -- "task"`）、[`examples/cordis-agent`](../../examples/cordis-agent)（自我检查和动态插件挂载，`pnpm run demo:cordis`）与 [`examples/acp-agent`](../../examples/acp-agent)（通过 JSON-RPC stdio 暴露的 ACP 服务器，`pnpm run demo:acp`）。终端叶子加载 [`@deepseek-ai/dsh-stdio-demo`](../../packages/examples/stdio-demo)，headless 叶子加载 [`@deepseek-ai/dsh-cli-demo`](../../packages/examples/cli-demo)，ACP 叶子加载 [`@deepseek-ai/dsh-acp-demo`](../../packages/examples/acp-demo)，三个 app 包都通过 [`@deepseek-ai/dsh-agent-spine-demo`](../../packages/examples/agent-spine-demo) 共享主干。
## 功能→机制映射
@@ -102,7 +102,7 @@ export function apply(ctx: Context) {
| `/loop` | 在 `turn/end` 会话事件上 `send()` 下一次迭代；或强制继续 |
| 动态工作流 | `ctx.workflows` + worker-thread 引擎 + `workflow` 工具；结构化的进程内子任务通过作用域化的 prompt/工具注册、单调工具守卫、最终 `tools/result` 提交（包括外层 `run_code`）和终端 `agent/turn-stop` 来强制输出 |
| 排队消息 + steering（中途引导） | 核心 `Agent.send()` / `Agent.steer()` |
| 上下文压缩（context compaction）（自动 + 手动） | `ctx.compact` seam + 串行 `agent/pre-step` seam 上的后端（`dsh-compact-basic`）；自动 = 每步之前的 token 压力检查；手动触发调用同一个 `ctx.compact` 例程（[压缩 RFC](../rfc/implemented/feature/2026-06-18-compaction-capability-seam.md)——面向模型的 `/compact` 消费方工具已推迟） |
| 上下文压缩（context compaction）（自动 + 手动） | `ctx.compact` seam + `dsh-compact-basic`；自动压力检查运行在串行 `agent/post-step`，规范化溢出恢复运行在 `agent/request-error`，手动调用方使用同一个压缩服务（[压缩 RFC](../rfc/implemented/feature/2026-06-18-compaction-capability-seam.md)——面向模型的 `/compact` 消费方工具已推迟） |
| 系统提示词可配置性 | `ctx.systemPrompt.section()`，支持排序与作用域局部覆盖 |
| AGENTS.md（根目录） | 一个读取该文件的 section provider |
| AGENTS.md（子目录，按需触发）+ 文件变更通知 | 从 watcher / tool-result 监听器调用 `agent.inject()` |

157
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@@ -31,9 +31,9 @@ A fully configured agent and live session were published. Setup is composition-o
'agent/created'(this: Scoped<Agent>, agent: Agent): void
```
Types: [Agent](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:141`](../../packages/core/agent/src/types.ts)
Source: [`packages/core/agent/src/types.ts:147`](../../packages/core/agent/src/types.ts)
### `agent/disposed` — emit
@@ -51,9 +51,9 @@ An agent left the registry; AgentLoop emits this after driver quiescence but bef
'agent/disposed'(this: Scoped<Agent>, agent: Agent): void
```
Types: [Agent](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:150`](../../packages/core/agent/src/types.ts)
Source: [`packages/core/agent/src/types.ts:156`](../../packages/core/agent/src/types.ts)
### `agent/error` — emit
@@ -73,35 +73,53 @@ A step or turn errored. The loop reports a failure here (plus the logger) even w
'agent/error'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, error: Error): void
```
Types: [Agent](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:285`](../../packages/core/agent/src/types.ts)
Source: [`packages/core/agent/src/types.ts:311`](../../packages/core/agent/src/types.ts)
### `agent/pre-step` — serial
### `agent/post-step` — serial
Awaited serial checkpoint for session-surface mutation after prompt assembly and before `step/start`; appends land outside the pending step. The loop derives history once afterward, so compaction records and replacements are included without rewriting an assembled request. The prompt and prefix are the exact pressure inputs for that request, and `signal` cancels listener work. Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.
Awaited serial checkpoint after the response, real or synthetic tool results, injected context, and steering are durable but before `step/end`. A cancelled tool batch reaches this checkpoint with an aborted signal.
```ts cordis-catalog
/**
* Awaited serial checkpoint for session-surface mutation after prompt
* assembly and before `step/start`; appends land outside the pending step.
* The loop derives history once afterward, so compaction records and
* replacements are included without rewriting an assembled request. The
* prompt and prefix are the exact pressure inputs for that request, and
* Awaited serial checkpoint after the response, real or synthetic tool
* results, injected context, and steering are durable but before `step/end`.
* A cancelled tool batch reaches this checkpoint with an aborted signal.
* @param agent - the agent whose step is settling.
* @param turn - the open turn number.
* @param step - the open step number.
* @param signal - the turn abort signal.
* Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.
* @mode serial
*/
'agent/post-step'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, signal: AbortSignal): Promise<void> | void
```
Types: [Agent](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:264`](../../packages/core/agent/src/types.ts)
### `agent/pre-step` — serial
Awaited serial checkpoint before `step/start`; appends land outside the pending step and are included when the loop derives request history. `signal` cancels listener work. Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.
```ts cordis-catalog
/**
* Awaited serial checkpoint before `step/start`; appends land outside the
* pending step and are included when the loop derives request history.
* `signal` cancels listener work.
* Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.
* @param agent - the agent opening the step.
* @param turn - the open turn number.
* @param step - the pending step number.
* @param fullSystemPrompt - the assembled prompt.
* @param sessionPrefix - the frozen request prefix.
* @param signal - the turn abort signal.
* @mode serial
*/
'agent/pre-step'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, fullSystemPrompt: string, sessionPrefix: readonly Message[], signal: AbortSignal): Promise<void> | void
'agent/pre-step'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, signal: AbortSignal): Promise<void> | void
```
Types: [Agent](../core-data-structures/core.md) · [Message](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:204`](../../packages/core/agent/src/types.ts)
@@ -122,7 +140,7 @@ Allow, rewrite, or block one drained prompt before it becomes a user message. Ca
'agent/prompt-submit'(this: Scoped<Agent>, agent: Agent, content: ContentBlock[], source: MessageSource, next: () => Promise<PromptDecision>): Promise<PromptDecision>
```
Types: [Agent](../core-data-structures/core.md) · [ContentBlock](../core-data-structures/core.md) · [MessageSource](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [ContentBlock](../core-data-structures/core.md) · [MessageSource](../core-data-structures/core.md) · [PromptDecision](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:214`](../../packages/core/agent/src/types.ts)
@@ -143,9 +161,9 @@ Detached, frozen content entered the agent's inbox. Source defaults have already
'agent/queued'(this: Scoped<Agent>, agent: Agent, content: ContentBlock[], info: { source: MessageSource; steering: boolean }): void
```
Types: [Agent](../core-data-structures/core.md) · [ContentBlock](../core-data-structures/core.md) · [MessageSource](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [ContentBlock](../core-data-structures/core.md) · [MessageSource](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:169`](../../packages/core/agent/src/types.ts)
Source: [`packages/core/agent/src/types.ts:175`](../../packages/core/agent/src/types.ts)
### `agent/request` — waterfall
@@ -166,13 +184,38 @@ Replace the frozen call configuration. Model-visible content must use logged cha
'agent/request'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, config: LlmCallConfig, next: () => Promise<LlmCallConfig>): Promise<LlmCallConfig>
```
Types: [Agent](../core-data-structures/core.md) · [LlmCallConfig](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [LlmCallConfig](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:226`](../../packages/core/agent/src/types.ts)
### `agent/request-error` — waterfall
Recover a model-request failure after its failed step has closed. `retry` opens a new numbered step; `fail` preserves the original request error. Call `next()` to delegate to the next recovery listener or the default.
```ts cordis-catalog
/**
* Recover a model-request failure after its failed step has closed. `retry`
* opens a new numbered step; `fail` preserves the original request error.
* Call `next()` to delegate to the next recovery listener or the default.
* @param agent - the agent whose request failed.
* @param turn - the open turn number.
* @param step - the failed step number.
* @param error - the original model-request failure.
* @param retryAttempt - zero-based number of prior recovery retries.
* @param signal - the turn abort signal.
* Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.
* @mode waterfall
*/
'agent/request-error'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, error: RequestError, retryAttempt: number, signal: AbortSignal, next: () => Promise<RequestErrorDecision>): Promise<RequestErrorDecision>
```
Types: [Agent](../core-data-structures/core.md) · [RequestError](../core-data-structures/core.md) · [RequestErrorDecision](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:278`](../../packages/core/agent/src/types.ts)
### `agent/session-prefix` — waterfall
Compose request-only messages placed before derived history. The frozen result is computed once per loop instance, logged on its anchoring request header, and reused so the provider prefix remains stable. Interrupted composition is discarded. Composition precedes the first `agent/pre-step` and request boundary, so listener appends join the current request and pressure accounting sees the composed prefix. Changing context belongs in history; contributors should prepend to `await next()` to preserve registration order. Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.
Compose request-only messages placed before derived history. The frozen result is computed once per loop instance, logged on its anchoring request header, and reused so the provider prefix remains stable. Interrupted composition is discarded. Composition precedes the first `agent/pre-step` and request boundary, so listener appends join the current request. Changing context belongs in history; contributors should prepend to `await next()` to preserve registration order. Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.
```ts cordis-catalog
/**
@@ -180,9 +223,9 @@ Compose request-only messages placed before derived history. The frozen result i
* result is computed once per loop instance, logged on its anchoring request
* header, and reused so the provider prefix remains stable. Interrupted
* composition is discarded. Composition precedes the first `agent/pre-step`
* and request boundary, so listener appends join the current request and
* pressure accounting sees the composed prefix. Changing context belongs in
* history; contributors should prepend to `await next()` to preserve registration order.
* and request boundary, so listener appends join the current request.
* Changing context belongs in history; contributors should prepend to
* `await next()` to preserve registration order.
* Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.
* @param agent - the agent whose session prefix is being composed.
* @param prefix - the frozen seed; return an extended replacement.
@@ -192,7 +235,7 @@ Compose request-only messages placed before derived history. The frozen result i
'agent/session-prefix'(this: Scoped<Agent>, agent: Agent, prefix: Message[], signal: AbortSignal, next: () => Promise<Message[]>): Promise<Message[]>
```
Types: [Agent](../core-data-structures/core.md) · [Message](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [Message](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:241`](../../packages/core/agent/src/types.ts)
@@ -214,9 +257,9 @@ The session lifecycle began, once before the first turn. Use `agent.inject()` to
'agent/session-start'(this: Scoped<Agent>, agent: Agent, source: SessionStartSource): void
```
Types: [Agent](../core-data-structures/core.md) · [SessionStartSource](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md) · [SessionStartSource](../core-data-structures/core.md)
Source: [`packages/core/agent/src/types.ts:182`](../../packages/core/agent/src/types.ts)
Source: [`packages/core/agent/src/types.ts:188`](../../packages/core/agent/src/types.ts)
### `agent/status` — emit
@@ -234,9 +277,9 @@ Agent status changed (`idle` ⇄ `running`, or → `disposed`). `send()` does no
'agent/status'(this: Scoped<Agent>, agent: Agent, status: AgentStatus): void
```
Types: [Agent](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [AgentStatus](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:159`](../../packages/core/agent/src/types.ts)
Source: [`packages/core/agent/src/types.ts:165`](../../packages/core/agent/src/types.ts)
### `agent/step-result` — waterfall
@@ -256,7 +299,7 @@ Waterfall: post-process the assembled assistant Message before tool dispatch (va
'agent/step-result'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, message: Message, next: () => Promise<Message>): Promise<Message>
```
Types: [Agent](../core-data-structures/core.md) · [Message](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [Message](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:252`](../../packages/core/agent/src/types.ts)
@@ -277,9 +320,9 @@ Override whether the turn continues. The default continues after tool calls or s
'agent/turn-continuation'(this: Scoped<Agent>, agent: Agent, turn: number, defaultDecision: ContinuationDecision, next: () => Promise<ContinuationDecision>): Promise<ContinuationDecision>
```
Types: [Agent](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [ContinuationDecision](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:262`](../../packages/core/agent/src/types.ts)
Source: [`packages/core/agent/src/types.ts:288`](../../packages/core/agent/src/types.ts)
### `agent/turn-stop` — serial
@@ -298,9 +341,9 @@ Monotonic terminal-stop checkpoint after continuation and steering are folded; a
'agent/turn-stop'(this: Scoped<Agent>, agent: Agent, turn: number): ContinuationStop | undefined
```
Types: [Agent](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [ContinuationStop](../core-data-structures/core.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/core/agent/src/types.ts:272`](../../packages/core/agent/src/types.ts)
Source: [`packages/core/agent/src/types.ts:298`](../../packages/core/agent/src/types.ts)
## `agent-loop/*`
@@ -321,6 +364,8 @@ A declarative agent entry failed before it could publish a live agent. Consumers
'agent-loop/config-start-failed'(sessionId: SessionId, error: unknown): void
```
Types: [SessionId](../core-data-structures/core.md)
Source: [`packages/core/agent-loop/src/index.ts:362`](../../packages/core/agent-loop/src/index.ts)
## `approval/*`
@@ -340,7 +385,7 @@ Ask composed answerers for one decision. Return an outcome to claim the request
'approval/request'(this: Scoped<ApprovalService>, req: ApprovalRequest, next: () => Promise<ApprovalOutcome>): Promise<ApprovalOutcome>
```
Types: [ApprovalOutcome](../core-data-structures/approval.md) · [ApprovalRequest](../core-data-structures/approval.md)
Types: [ApprovalOutcome](../core-data-structures/approval.md) · [ApprovalRequest](../core-data-structures/approval.md) · [ApprovalService](../core-data-structures/approval.md) · [Scoped](../core-data-structures/scope.md)
Source: [`packages/ui/user-approval/src/index.ts:31`](../../packages/ui/user-approval/src/index.ts)
@@ -426,9 +471,9 @@ Waterfall around every streaming model call (retry, replay, routing). Bound to t
'llm/stream'(this: LlmService, options: GenerateOptions, next: () => AsyncIterable<StreamChunk>): AsyncIterable<StreamChunk>
```
Types: [GenerateOptions](../core-data-structures/core.md) · [StreamChunk](../core-data-structures/llm-streaming.md)
Types: [GenerateOptions](../core-data-structures/core.md) · [LlmService](../core-data-structures/llm-streaming.md) · [StreamChunk](../core-data-structures/llm-streaming.md)
Source: [`packages/llm/llm/src/index.ts:40`](../../packages/llm/llm/src/index.ts)
Source: [`packages/llm/llm/src/index.ts:43`](../../packages/llm/llm/src/index.ts)
## `session/*`
@@ -451,6 +496,8 @@ Creation announcement during session publication. A synchronous throw vetoes and
'session/created'(this: Scoped<Session>, session: Session): void
```
Types: [Scoped](../core-data-structures/scope.md) · [Session](../core-data-structures/session.md)
Source: [`packages/core/session/src/index.ts:47`](../../packages/core/session/src/index.ts)
### `session/disposed` — emit
@@ -470,6 +517,8 @@ Emitted once when an announced session leaves the store, including publication r
'session/disposed'(this: Scoped<Session>, session: Session): void
```
Types: [Scoped](../core-data-structures/scope.md) · [Session](../core-data-structures/session.md)
Source: [`packages/core/session/src/index.ts:57`](../../packages/core/session/src/index.ts)
### `session/event` — emit
@@ -491,7 +540,7 @@ Post-commit, fire-and-forget append feed. The listener snapshot resolves before
'session/event'(this: Scoped<Session>, session: Session, event: SessionEvent): void
```
Types: [SessionEvent](../core-data-structures/core.md)
Types: [Scoped](../core-data-structures/scope.md) · [Session](../core-data-structures/session.md) · [SessionEvent](../core-data-structures/core.md)
Source: [`packages/core/session/src/index.ts:69`](../../packages/core/session/src/index.ts)
@@ -512,6 +561,8 @@ Awaited parallel durability checkpoint: every listener runs and the caller await
'session/flush'(this: Scoped<Session>, session: Session): Promise<void> | void
```
Types: [Scoped](../core-data-structures/scope.md) · [Session](../core-data-structures/session.md)
Source: [`packages/core/session/src/index.ts:79`](../../packages/core/session/src/index.ts)
## `subagent/*`
@@ -532,6 +583,8 @@ A ready child settled. Scope-filtered dispatch uses the same delegating parent c
'subagent/end'(this: Scoped<SubagentService>, info: SubagentRunEndInfo): void
```
Types: [Scoped](../core-data-structures/scope.md) · [SubagentService](../core-data-structures/subagent.md)
Source: [`packages/subagent/subagent/src/index.ts:112`](../../packages/subagent/subagent/src/index.ts)
### `subagent/provider-added` — emit
@@ -547,6 +600,8 @@ A provider became resolvable in the registry.
'subagent/provider-added'(provider: SubagentProvider): void
```
Types: [SubagentProvider](../core-data-structures/subagent.md)
Source: [`packages/subagent/subagent/src/index.ts:86`](../../packages/subagent/subagent/src/index.ts)
### `subagent/provider-removed` — emit
@@ -582,6 +637,8 @@ A provider established a ready child. For in-process providers, `ctx.agents.get(
'subagent/start'(this: Scoped<SubagentService>, info: SubagentRunInfo): void
```
Types: [Scoped](../core-data-structures/scope.md) · [SubagentService](../core-data-structures/subagent.md)
Source: [`packages/subagent/subagent/src/index.ts:103`](../../packages/subagent/subagent/src/index.ts)
## `system-prompt/*`
@@ -602,6 +659,8 @@ Expert waterfall over the assembled sections, tools, and variables. Scope-filter
'system-prompt/assemble'(this: Scoped<SystemPrompt>, assembly: PromptAssembly, context: AssembleContext, next: () => Promise<PromptAssembly>): Promise<PromptAssembly>
```
Types: [AssembleContext](../core-data-structures/system-prompt.md) · [Scoped](../core-data-structures/scope.md) · [SystemPrompt](../core-data-structures/system-prompt.md)
Source: [`packages/core/system-prompt/src/index.ts:27`](../../packages/core/system-prompt/src/index.ts)
### `system-prompt/change` — emit
@@ -656,7 +715,7 @@ Around-dispatch waterfall for timeout, retry, or metrics. `next()` returns a nor
'tools/execute'(this: Scoped<ToolRegistry>, exec: ToolExecution, next: () => Promise<ToolExecutionResult>): Promise<ToolExecutionResult>
```
Types: [ToolExecution](../core-data-structures/tools.md) · [ToolExecutionResult](../core-data-structures/tools.md)
Types: [Scoped](../core-data-structures/scope.md) · [ToolExecution](../core-data-structures/tools.md) · [ToolExecutionResult](../core-data-structures/tools.md) · [ToolRegistry](../core-data-structures/tools.md)
Source: [`packages/core/tools/src/index.ts:89`](../../packages/core/tools/src/index.ts)
@@ -676,7 +735,7 @@ Accept, replace, enrich, or block a normalized dispatch result. `next()` accepts
'tools/post-execute'(this: Scoped<ToolRegistry>, exec: ToolExecution, result: Readonly<ToolExecutionResult>, next: () => Promise<PostToolDecision>): Promise<PostToolDecision>
```
Types: [ToolExecution](../core-data-structures/tools.md) · [ToolExecutionResult](../core-data-structures/tools.md)
Types: [PostToolDecision](../core-data-structures/tools.md) · [Scoped](../core-data-structures/scope.md) · [ToolExecution](../core-data-structures/tools.md) · [ToolExecutionResult](../core-data-structures/tools.md) · [ToolRegistry](../core-data-structures/tools.md)
Source: [`packages/core/tools/src/index.ts:98`](../../packages/core/tools/src/index.ts)
@@ -695,7 +754,7 @@ Allow, deny, or ask before dispatch. `next()` delegates to allow; missing approv
'tools/pre-execute'(this: Scoped<ToolRegistry>, exec: ToolExecution, next: () => Promise<PreToolDecision>): Promise<PreToolDecision>
```
Types: [ToolExecution](../core-data-structures/tools.md)
Types: [PreToolDecision](../core-data-structures/tools.md) · [Scoped](../core-data-structures/scope.md) · [ToolExecution](../core-data-structures/tools.md) · [ToolRegistry](../core-data-structures/tools.md)
Source: [`packages/core/tools/src/index.ts:80`](../../packages/core/tools/src/index.ts)
@@ -714,7 +773,7 @@ Observe the frozen, lossless-JSON final outcome. Listener failures are contained
'tools/result'(this: Scoped<ToolRegistry>, exec: Readonly<ToolExecution>, result: Readonly<ToolExecutionResult>): undefined
```
Types: [ToolExecution](../core-data-structures/tools.md) · [ToolExecutionResult](../core-data-structures/tools.md)
Types: [Scoped](../core-data-structures/scope.md) · [ToolExecution](../core-data-structures/tools.md) · [ToolExecutionResult](../core-data-structures/tools.md) · [ToolRegistry](../core-data-structures/tools.md)
Source: [`packages/core/tools/src/index.ts:106`](../../packages/core/tools/src/index.ts)
@@ -738,6 +797,8 @@ One `agent()` call settled (clean result, child failure, or run cancellation). P
'workflow/agent-end'(info: WorkflowRunInfo, agent: WorkflowAgentEndInfo): void
```
Types: [WorkflowRunInfo](../core-data-structures/workflow.md)
Source: [`packages/workflow/workflow/src/index.ts:81`](../../packages/workflow/workflow/src/index.ts)
### `workflow/agent-start` — emit
@@ -757,6 +818,8 @@ One `agent()` call established a ready child run. Paired with Events['workflow/a
'workflow/agent-start'(info: WorkflowRunInfo, agent: WorkflowAgentInfo): void
```
Types: [WorkflowRunInfo](../core-data-structures/workflow.md)
Source: [`packages/workflow/workflow/src/index.ts:70`](../../packages/workflow/workflow/src/index.ts)
### `workflow/end` — emit
@@ -776,6 +839,8 @@ A workflow run settled (any stop reason). Fired when WorkflowRun.result resolves
'workflow/end'(info: WorkflowRunInfo, result: WorkflowResultInfo): void
```
Types: [WorkflowRunInfo](../core-data-structures/workflow.md)
Source: [`packages/workflow/workflow/src/index.ts:91`](../../packages/workflow/workflow/src/index.ts)
### `workflow/log` — emit
@@ -792,6 +857,8 @@ The script emitted a narration line (a `log(message)` call).
'workflow/log'(info: WorkflowRunInfo, message: string): void
```
Types: [WorkflowRunInfo](../core-data-structures/workflow.md)
Source: [`packages/workflow/workflow/src/index.ts:60`](../../packages/workflow/workflow/src/index.ts)
### `workflow/phase` — emit
@@ -809,6 +876,8 @@ The script entered a phase (a `phase(title)` call) — progress grouping for obs
'workflow/phase'(info: WorkflowRunInfo, title: string): void
```
Types: [WorkflowRunInfo](../core-data-structures/workflow.md)
Source: [`packages/workflow/workflow/src/index.ts:53`](../../packages/workflow/workflow/src/index.ts)
### `workflow/start` — emit
@@ -825,6 +894,8 @@ A workflow run started — the script's meta block validated, the body about to
'workflow/start'(info: WorkflowRunInfo): void
```
Types: [WorkflowRunInfo](../core-data-structures/workflow.md)
Source: [`packages/workflow/workflow/src/index.ts:45`](../../packages/workflow/workflow/src/index.ts)
## Inherited events (cordis core + loader/hmr/timer)

127
docs/cordis-catalog/services.md
View File

@@ -42,15 +42,66 @@ async createAgent(ownerCtx: Context, options: CreateAgentOptions): Promise<Agent
async resume(ownerCtx: Context, options: ResumeAgentOptions): Promise<AgentHandle>
```
Types: [Agent](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [AgentOptions](../core-data-structures/core.md) · [SessionHeader](../core-data-structures/persistence.md) · [SessionId](../core-data-structures/core.md)
Source: [`packages/core/agent-loop/src/index.ts:407`](../../packages/core/agent-loop/src/index.ts)
## `ctx.agents` — `AgentRegistry`
Agent registry (`ctx.agents`): tracks live agents so UI, hook, and orchestrator plugins can find them without depending on the concrete loop package. Agent *creation* is provided by whichever plugin implements the AgentFactory (`@deepseek-ai/dsh-agent-loop`), registered via setFactory.
Agent service (`ctx.agents`): tracks live agents and carries the initiating Agent through one process-local asynchronous driver chain. Agent *creation* is provided by whichever plugin implements the AgentFactory (`@deepseek-ai/dsh-agent-loop`), registered via setFactory.
Initiator methods provide same-process causal attribution only. Ambient presence is neither liveness proof nor authorization; subjects and owners remain explicit, as does identity at worker, process, persistence, and wire boundaries. Returned Promise boundaries drain during teardown, except a nested lineage that starts an owning-fiber unload is excluded from its own drain.
```ts cordis-catalog
/**
* Read the Agent that initiated the inherited asynchronous driver chain.
* Use this optional form for logging, tracing, metrics, or host attribution
* that also supports agentless calls. When a parent creates a child, setup
* reports the causal parent while `agentCtx.agent` identifies the child.
* @returns the inherited Agent, or `undefined` outside an initiator boundary
* and inside an explicit clearing boundary.
* @throws when this service instance has been disposed.
*/
currentInitiator(): Agent | undefined
/**
* Read the initiating Agent and fail when no initiator boundary is active.
* Use this for private helpers contractually below a driver, or for a
* deployment-owned outbound request whose contract forbids agentless calls.
* Generic or direct-call seams use optional lookup or explicit request fields.
* @returns the inherited Agent.
* @throws when no initiator is active or this service instance has been disposed.
*/
requireInitiator(): Agent
/**
* Run an operation with one exact Agent as its process-local initiator. The
* exact synchronous value or Promise returned by the operation is preserved.
* Custom drivers and test harnesses wrap their complete returned foreground
* lifetime.
* A queue or wire receiver may establish this boundary only after validating
* explicit identity and resolving the exact live Agent; this method does neither.
* Detached work remains owned by the subsystem that starts it.
* @param agent - initiating Agent to inherit; presence is neither liveness proof nor authorization.
* @param operation - synchronous or asynchronous operation to invoke.
* @returns the exact value returned by `operation`.
* @throws when the initiator scope is closing/disposed, or when `operation` throws.
*/
withInitiator<T>(agent: Agent, operation: () => T): T
/**
* Run an operation inside a boundary that hides any inherited initiating
* Agent. The exact synchronous value or Promise is preserved.
* Use this while creating lazy shared timers, queue pumps, pool maintenance,
* watchers, or exporters so they do not inherit the first Agent that happens
* to initialize them. It clears only initiator attribution, not explicit
* fields, and does not own or drain detached resources.
* @param operation - synchronous or asynchronous operation to invoke without an initiator.
* @returns the exact value returned by `operation`.
* @throws when the initiator scope is closing/disposed, or when `operation` throws.
*/
withoutInitiator<T>(operation: () => T): T
/**
* Register the agent-creation factory (the loop calls this on construction,
* effect-scoped). A traced Cordis service is canonicalized to its concrete
@@ -163,9 +214,9 @@ list(): Agent[]
roots(): Agent[]
```
Types: [Agent](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [SessionId](../core-data-structures/core.md)
Source: [`packages/core/agent/src/index.ts:201`](../../packages/core/agent/src/index.ts)
Source: [`packages/core/agent/src/index.ts:217`](../../packages/core/agent/src/index.ts)
## `ctx.approval` — `ApprovalService`
@@ -233,7 +284,7 @@ abstract run(spec: BashExecSpec): Promise<BashRunResult>
abstract start(spec: BashExecSpec): BashProcess
```
Types: [BashExecRequest](../core-data-structures/bash.md) · [BashExecSpec](../core-data-structures/bash.md) · [BashRunResult](../core-data-structures/bash.md)
Types: [BashExecRequest](../core-data-structures/bash.md) · [BashExecSpec](../core-data-structures/bash.md) · [BashProcess](../core-data-structures/bash.md) · [BashRunResult](../core-data-structures/bash.md)
Source: [`packages/bash/bash/src/index.ts:49`](../../packages/bash/bash/src/index.ts)
@@ -264,7 +315,7 @@ collect(execution: ToolExecution): DshEnvironment
list(): BashEnvVariableInfo[]
```
Types: [ToolExecution](../core-data-structures/tools.md)
Types: [DshEnvironment](../core-data-structures/bash.md) · [ToolExecution](../core-data-structures/tools.md)
Source: [`packages/bash/tool-bash/src/index.ts:102`](../../packages/bash/tool-bash/src/index.ts)
@@ -295,21 +346,18 @@ Abstract compaction service. Implementations own trigger policy, retention, and
```ts cordis-catalog
/**
* Check token pressure and compact if the conversation is too large.
* Estimate the next request, including its session prefix, derived history,
* and system prompt. Above threshold, compact a head-anchored range ending at
* a balanced tool boundary and reconsolidate any prior automatic checkpoint.
* Return `null` when no compaction is needed or an open tail leaves no safe
* cutoff. A single oversized retained unit or prefix cannot be repaired here.
* Consider automatic compaction for one explicit trigger. Pressure policy
* uses the latest durable routed request, while context-overflow policy may
* force a useful balanced reduction even below the normal threshold. Return
* `null` when no safe range can be compacted. A single oversized retained
* unit or request envelope cannot be repaired through surface compaction.
*
* @param agent - agent context owning the session surface and model options.
* @param fullSystemPrompt - assembled system prompt, counted toward the estimate.
* @param sessionPrefix - the instance's composed session prefix, counted toward the
* estimate.
* @param agent - agent context owning the session surface and routing options.
* @param trigger - normal pressure or provider-confirmed context overflow.
* @param signal - cancellation signal; model-backed implementations must forward it.
* @returns the compaction result, or `null` if no compaction was needed.
*/
abstract compactIfNeeded( agent: CompactAgentContext, fullSystemPrompt: string, sessionPrefix: readonly Message[], signal: AbortSignal, ): Promise<CompactionResult | null>
abstract compactIfNeeded( agent: CompactAgentContext, trigger: CompactionTrigger, signal: AbortSignal, ): Promise<CompactionResult | null>
/**
* Forcibly compact a range of surface nodes into a single summary node.
@@ -331,9 +379,9 @@ abstract compactIfNeeded( agent: CompactAgentContext, fullSystemPrompt: string,
abstract compactRegion( start: number, end: number, agent: CompactAgentContext, signal?: AbortSignal, ): Promise<CompactionResult>
```
Types: [Message](../core-data-structures/core.md)
Types: [CompactionResult](../core-data-structures/compaction.md) · [CompactionTrigger](../core-data-structures/compaction.md)
Source: [`packages/compact/compact/src/index.ts:38`](../../packages/compact/compact/src/index.ts)
Source: [`packages/compact/compact/src/index.ts:40`](../../packages/compact/compact/src/index.ts)
## `ctx.fs` — `FileSystem` (abstract seam)
@@ -427,7 +475,7 @@ abstract writeText(target: FsTarget, content: string, expected?: FsWriteIntent,
abstract editText(target: FsTarget, edit: FsEditRequest, expected?: { version: FsVersion }, signal?: AbortSignal): Promise<FsEditOutcome>
```
Types: [FsEditOutcome](../core-data-structures/filesystem.md) · [FsEditRequest](../core-data-structures/filesystem.md) · [FsInfo](../core-data-structures/filesystem.md) · [FsTarget](../core-data-structures/filesystem.md) · [FsVersion](../core-data-structures/filesystem.md) · [FsWriteIntent](../core-data-structures/filesystem.md) · [FsWriteOutcome](../core-data-structures/filesystem.md)
Types: [FsDirEntry](../core-data-structures/filesystem.md) · [FsEditOutcome](../core-data-structures/filesystem.md) · [FsEditRequest](../core-data-structures/filesystem.md) · [FsInfo](../core-data-structures/filesystem.md) · [FsPathInfo](../core-data-structures/filesystem.md) · [FsTarget](../core-data-structures/filesystem.md) · [FsVersion](../core-data-structures/filesystem.md) · [FsWriteIntent](../core-data-structures/filesystem.md) · [FsWriteOutcome](../core-data-structures/filesystem.md)
Source: [`packages/fs/fs/src/index.ts:80`](../../packages/fs/fs/src/index.ts)
@@ -464,17 +512,20 @@ async listModels(provider: string): Promise<LlmModelInfo[]>
* Stream one model call as raw chunks (token-level deltas). Throws
* `LlmError` with code `NO_ADAPTER` if no adapter is registered for
* `options.provider`. Replay state is retained only when the same adapter
* instance owns its historical provider and the target provider. Dispatches
* through the `llm/stream` waterfall.
* instance owns its historical provider and the target provider. Final
* adapter selection, dispatch, and iteration failures retain their original
* Error identity and are tagged in a call-local scope for narrow agent-loop
* request recovery; middleware and nested-call failures remain untagged for
* the outer call.
* @param options - the full request; `options.provider` selects the adapter.
* @returns the chunk stream, possibly wrapped by `llm/stream` listeners.
*/
stream(options: GenerateOptions): AsyncIterable<StreamChunk>
```
Types: [GenerateOptions](../core-data-structures/core.md) · [StreamChunk](../core-data-structures/llm-streaming.md)
Types: [GenerateOptions](../core-data-structures/core.md) · [LlmAdapter](../core-data-structures/llm-streaming.md) · [LlmModelInfo](../core-data-structures/core.md) · [LlmProviderInfo](../core-data-structures/core.md) · [StreamChunk](../core-data-structures/llm-streaming.md)
Source: [`packages/llm/llm/src/index.ts:94`](../../packages/llm/llm/src/index.ts)
Source: [`packages/llm/llm/src/index.ts:97`](../../packages/llm/llm/src/index.ts)
## `ctx.permission` — `PermissionService`
@@ -516,7 +567,7 @@ optionOf(name: string): PresetOption
set(session: Session, name: string): void
```
Types: [SessionEvent](../core-data-structures/core.md)
Types: [Session](../core-data-structures/session.md) · [SessionEvent](../core-data-structures/core.md)
Source: [`packages/ui/permission/src/index.ts:94`](../../packages/ui/permission/src/index.ts)
@@ -594,7 +645,7 @@ abstract load(id: SessionId): Promise<{ meta: SessionHeader; events: SessionEven
abstract list(): Promise<SessionHeader[]>
```
Types: [SessionEvent](../core-data-structures/core.md)
Types: [SessionEvent](../core-data-structures/core.md) · [SessionHeader](../core-data-structures/persistence.md) · [SessionId](../core-data-structures/core.md) · [SessionLocation](../core-data-structures/persistence.md)
Source: [`packages/session-persistence/session-persistence/src/index.ts:42`](../../packages/session-persistence/session-persistence/src/index.ts)
@@ -640,6 +691,8 @@ async traceEvent(request: SessionEventTraceRequest): Promise<SessionEventTrace>
async readEvent(request: SessionEventReadRequest): Promise<SessionEventWindow>
```
Types: [SessionEventReadRequest](../core-data-structures/session-query.md) · [SessionEventRecord](../core-data-structures/session-query.md) · [SessionEventTrace](../core-data-structures/session-query.md) · [SessionEventTraceRequest](../core-data-structures/session-query.md) · [SessionEventWindow](../core-data-structures/session-query.md) · [SessionId](../core-data-structures/core.md) · [SessionLineageTrace](../core-data-structures/session-query.md) · [SessionRecord](../core-data-structures/session-query.md)
Source: [`packages/session-query/session-query/src/index.ts:38`](../../packages/session-query/session-query/src/index.ts)
## `ctx.sessions` — `SessionStore`
@@ -765,6 +818,8 @@ list(): Session[]
fork(source: SessionForkSource, boundary?: number, childSessionId?: SessionId): Session
```
Types: [CreateSessionOptions](../core-data-structures/persistence.md) · [Session](../core-data-structures/session.md) · [SessionId](../core-data-structures/core.md)
Source: [`packages/core/session/src/index.ts:577`](../../packages/core/session/src/index.ts)
## `ctx.skills` — `SkillService`
@@ -811,6 +866,8 @@ async list(options: SkillLookupOptions = {}): Promise<SkillSummary[]>
async get(name: string, options: SkillLookupOptions = {}): Promise<SkillDefinition | undefined>
```
Types: [SkillDefinition](../core-data-structures/skills.md) · [SkillLookupOptions](../core-data-structures/skills.md) · [SkillProvider](../core-data-structures/skills.md) · [SkillRegistration](../core-data-structures/skills.md) · [SkillSummary](../core-data-structures/skills.md)
Source: [`packages/skill/skill/src/index.ts:141`](../../packages/skill/skill/src/index.ts)
## `ctx.spillStore` — `SpillStore` (abstract seam)
@@ -832,6 +889,8 @@ Semantics every implementation must honor:
abstract saveText(input: SaveTextSpill): Promise<SpillRef>
```
Types: [SaveTextSpill](../core-data-structures/spill.md) · [SpillRef](../core-data-structures/spill.md)
Source: [`packages/spill/spill/src/index.ts:45`](../../packages/spill/spill/src/index.ts)
## `ctx.subagents` — `SubagentService`
@@ -873,6 +932,8 @@ list(): string[]
async start(name: string, request: SubagentStartRequest): Promise<SubagentRun>
```
Types: [SubagentProvider](../core-data-structures/subagent.md) · [SubagentRun](../core-data-structures/subagent.md) · [SubagentStartRequest](../core-data-structures/subagent.md)
Source: [`packages/subagent/subagent/src/index.ts:153`](../../packages/subagent/subagent/src/index.ts)
## `ctx.systemPrompt` — `SystemPrompt`
@@ -919,6 +980,8 @@ variable(name: string, provider: (context: AssembleContext) => string | undefine
async assemble(context: AssembleContext = {}): Promise<PromptAssembly>
```
Types: [AssembleContext](../core-data-structures/system-prompt.md) · [PromptSection](../core-data-structures/system-prompt.md) · [ToolProviderResult](../core-data-structures/system-prompt.md)
Source: [`packages/core/system-prompt/src/index.ts:209`](../../packages/core/system-prompt/src/index.ts)
## `ctx.tasks` — `TaskService`
@@ -1006,7 +1069,7 @@ onTaskDone(listener: TaskDoneListener): () => void
attachSurface(name: string): () => void
```
Types: [Agent](../core-data-structures/core.md)
Types: [Agent](../core-data-structures/core.md) · [TaskDoneListener](../core-data-structures/tasks.md) · [TaskId](../core-data-structures/tasks.md) · [TaskRead](../core-data-structures/tasks.md) · [TaskSnapshot](../core-data-structures/tasks.md) · [TaskStart](../core-data-structures/tasks.md)
Source: [`packages/tasks/tasks/src/index.ts:76`](../../packages/tasks/tasks/src/index.ts)
@@ -1041,7 +1104,7 @@ measure(session: Session, requestHeader?: EpochHeader): TokenMeasurement
estimateMessage(message: Message): number
```
Types: [Message](../core-data-structures/core.md)
Types: [EpochHeader](../core-data-structures/session.md) · [Message](../core-data-structures/core.md) · [Session](../core-data-structures/session.md) · [TokenMeasurement](../core-data-structures/token-meter.md)
Source: [`packages/llm/token-meter/src/index.ts:106`](../../packages/llm/token-meter/src/index.ts)
@@ -1119,7 +1182,7 @@ executionMode(exec: ToolExecutionInput): ToolExecutionMode
async execute(exec: ToolExecutionInput): Promise<ToolExecutionResult>
```
Types: [ToolDefinition](../core-data-structures/tools.md) · [ToolExecutionInput](../core-data-structures/tools.md) · [ToolExecutionMode](../core-data-structures/tools.md) · [ToolExecutionResult](../core-data-structures/tools.md)
Types: [ScopeKey](../core-data-structures/scope.md) · [ToolDefinition](../core-data-structures/tools.md) · [ToolExecutionInput](../core-data-structures/tools.md) · [ToolExecutionMode](../core-data-structures/tools.md) · [ToolExecutionResult](../core-data-structures/tools.md) · [ToolGuard](../core-data-structures/tools.md) · [ToolRestriction](../core-data-structures/tools.md) · [ToolSchema](../core-data-structures/tools.md)
Source: [`packages/core/tools/src/index.ts:438`](../../packages/core/tools/src/index.ts)
@@ -1145,6 +1208,8 @@ registerProvider(provider: UserInteractionProvider): () => void
async ask(request: AskUserQuestionRequest): Promise<AskUserQuestionAnswer>
```
Types: [AskUserQuestionAnswer](../core-data-structures/user-interaction.md) · [AskUserQuestionRequest](../core-data-structures/user-interaction.md) · [UserInteractionProvider](../core-data-structures/user-interaction.md)
Source: [`packages/ui/user-interaction/src/index.ts:82`](../../packages/ui/user-interaction/src/index.ts)
## `ctx.web` — `WebService`
@@ -1201,6 +1266,8 @@ async search(request: WebSearchRequest, signal?: AbortSignal): Promise<WebSearch
async fetch(request: WebFetchRequest, signal?: AbortSignal): Promise<WebFetchResult>
```
Types: [WebFetchProvider](../core-data-structures/web.md) · [WebFetchRequest](../core-data-structures/web.md) · [WebFetchResult](../core-data-structures/web.md) · [WebSearchProvider](../core-data-structures/web.md) · [WebSearchRequest](../core-data-structures/web.md) · [WebSearchResult](../core-data-structures/web.md)
Source: [`packages/web/web/src/index.ts:74`](../../packages/web/web/src/index.ts)
## `ctx.workflows` — `WorkflowService` (abstract seam)
@@ -1217,6 +1284,8 @@ Workflow execution seam. Invalid requests throw before publication; a live run i
abstract start(request: WorkflowStartRequest): WorkflowRun
```
Types: [WorkflowRun](../core-data-structures/workflow.md) · [WorkflowStartRequest](../core-data-structures/workflow.md)
Source: [`packages/workflow/workflow/src/index.ts:159`](../../packages/workflow/workflow/src/index.ts)
## Inherited `ctx` members (cordis core + loader/hmr/timer)

11
docs/core-data-structures/compaction.md
View File

@@ -51,8 +51,15 @@ interface CompactionResult {
## The service
`CompactService` exposes `compactIfNeeded(...)` for pressure-triggered compaction, returning `null` when no compaction is needed, and `compactRegion(...)` for an explicit inclusive surface range. The pre-step caller supplies the agent, full prompt, session prefix, and abort signal; implementations must forward that signal to summarization. The seam owns no pricing API: [`ctx.tokenMeter`](token-meter.md) directly owns estimation and replay, while `dsh-compact-basic` owns retention, event sequencing, routed summarization calls, and their configuration.
Automatic callers state why policy is running; implementations may treat confirmed overflow more aggressively than ordinary pressure.
Auto-compaction runs at serial `agent/pre-step`, before the step and request derivation, so it can replace surface nodes while keeping trace events outside the step. Region boundaries preserve tool-call/result pairing but do not preserve whole turns, allowing early closed steps of one oversized turn to compact. `dsh-compact-basic` owns the retention and failure details.
```ts type-equiv
/** Why automatic policy is asking a backend to consider compaction. */
type CompactionTrigger = 'pressure' | 'context-overflow'
```
`CompactService` exposes `compactIfNeeded(agent, trigger, signal)` for automatic `pressure` or `context-overflow` policy, returning `null` when no safe work exists, and `compactRegion(...)` for an explicit inclusive surface range. Implementations must forward the supplied signal to summarization. The seam owns no pricing API: the singleton [`ctx.tokenMeter`](token-meter.md) directly owns estimation and replay, while `dsh-compact-basic` owns retention, event sequencing, routed summarization calls, and their configuration.
Pressure compaction runs at serial `agent/post-step`, after successful assistant output, tool results, buffered context, and steering are durable but before `step/end`. Failed-request recovery runs through `agent/request-error` after the failed step closes, and authorizes a fresh numbered-step retry only when the surface replacement generation advances. Region boundaries preserve tool-call/result pairing but do not preserve whole turns, allowing early closed steps of one oversized turn to compact. `dsh-compact-basic` owns thresholds, retained-tail policy, overflow caps, and failure handling.
The seam exports `toolPairingBalancedBefore(session, seq)` and `toolPairingBalancedAfter(session, seq)` for those edge checks. Both validate current surface membership and reject missing seqs and orphan results; the [package contract](../../packages/compact/compact/README.md#tool-pairing-boundaries) owns their cache semantics.

24
docs/core-data-structures/core.md
View File

@@ -36,9 +36,7 @@ Everything else is documented on a **sub-page**, not here. The rule that draws t
| [spill.md](spill.md) | the spill storage seam: `SaveTextSpill`, `SpillOwner`/`SpillSource`, `SpillRef`, the branded `SpillLocator` |
| [workflow.md](workflow.md) | the workflow seam: `WorkflowStartRequest`, `WorkflowMeta`, `WorkflowRun`/`Result`, the `workflow/*` event payloads, `WorkflowError` fatality |
> Type declarations and their JSDoc on this page are pasted **verbatim** from source and drift-checked by `pnpm run verify-type-equiv` (see [development.md](../development.md#documenting-types-verbatim-ts-type-equiv)).
FIXME(catalog-verbs): the drift gate covers only the nouns (the pasted type shapes); every method surface on these pages is hand-written prose. core-data-structures should probably also generate the *verbs* — the public methods of the cataloged classes — so a signature change cannot silently outdate the catalog.
> Type declarations and their JSDoc on these pages are source-equivalent and drift-checked by `pnpm run verify-type-equiv` (see [development.md](../development.md#documenting-types-verbatim-ts-type-equiv)). Ordinary blocks preserve complete declarations; `public-api` blocks preserve body-stripped public class declarations. Cordis services use the generated [service catalog](../cordis-catalog/services.md).
## The `…Map → derived-union` pattern
@@ -403,6 +401,10 @@ interface Agent {
The [event taxonomy](../architecture.md#event) owns the `agent/*` lifecycle, checkpoint, and waterfall contracts. Turn and step boundaries are durable session events rather than agent emits.
## Initiating Agent
The process-local initiator carried by `ctx.agents` is the exact `Agent` above, not a separate frame or copied identity. Ambient presence is neither liveness proof nor authorization; the [initiator-scope decision](../rfc/implemented/architecture/2026-07-15-agent-initiator-scope.md) owns its lifetime and boundary rules.
## Interception decisions
Each `agent/*` interception waterfall returns a small, seam-specific typed union — the unified Decision idiom (the tool seams' `PreToolDecision`/`PostToolDecision` in [tools.md](tools.md) follow the same shape). A CC/Codex hook bridge maps its `permissionDecision`/`decision`/`continue`/`additionalContext` fields onto these; a native plugin returns them directly. Prompt and post-tool decisions share one model-facing context shape, `HookContext`, which is `inject()`ed as a `context/message` and therefore carries a REQUIRED `source` (a missing source would default to `{kind:'user'}` and mislabel plugin context as a user prompt). Its optional `envelope` selects the canonical context tag or caller-owned raw framing, while JSON `meta` persists plugin state without exposing it to the model. Both decisions carry `additionalContexts[]` so every entry preserves its own provenance, framing, and metadata. Continuation reasons are steering messages instead and deliberately use the narrower content/source shape.
@@ -443,6 +445,22 @@ type ContinuationDecision =
| { action: 'continue'; reason?: { content: ContentBlock[]; source: MessageSource } }
```
`agent/request-error` receives the original `RequestError`, whose optional provider-neutral `code` supports stable routing without message parsing:
```ts type-equiv
/** Model-request failure with an optional machine-routable provider code. */
type RequestError = Error & { code?: string }
```
It returns a `RequestErrorDecision`; `retry` opens a new numbered step after the recovery listener's durable mutation, while `fail` preserves that error:
```ts type-equiv
/** Failed-request recovery decision; `retry` opens another numbered step while listeners delegate by calling `next()`. */
type RequestErrorDecision = { action: 'fail' } | { action: 'retry' }
```
`agent/post-step` is awaited after assistant output, real or synthetic tool results, buffered context, and steering are durable but before `step/end`. A cancelled tool batch reaches it with an aborted signal after draining; its signature is `(agent, turn, step, signal)`, and replayable facts remain in the session log rather than a transient payload.
`agent/turn-stop` returns the stop-only `ContinuationStop` subset or `undefined`. The loop calls this serial checkpoint after folding the ordinary decision, its reason, and pending steering; a stop is terminal and discards pending steering.
```ts type-equiv

74
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View File

@@ -37,7 +37,8 @@ Every adapter MUST obey these, and every consumer may rely on them:
- **`usage` before `finish`, nothing after `finish`.** Defer both to the provider's end-of-stream marker so a trailing usage-only chunk can't violate the ordering.
- **Tool-call `arguments` stay raw JSON strings end-to-end.** Partial fragments stream via `argumentsDelta`; a provider that hands back parsed objects re-stringifies at `block-end`.
- **Two sanctioned error paths.** A failure may either THROW from `stream()` (transport/protocol errors) **or** end the stream with `finish {kind:'error'|'aborted'}` (provider in-band errors, for adapters that can't throw mid-stream). Consumers must handle *both*. The agent loop translates a finish-error/aborted into a turn error — it never logs a normal completed assistant message for a failed step.
- **Two sanctioned error paths.** A failure may either THROW from `stream()` (transport/protocol errors) **or** end the stream with `finish {kind:'error'|'aborted'}` (provider in-band errors, for adapters that can't throw mid-stream). Consumers must handle *both*. The agent loop closes the failed step and offers either form to `agent/request-error`; absent recovery it becomes a turn error, and no normal completed assistant message is logged for that request.
- **Context overflow has one canonical code.** Both DeepSeek adapters classify explicit provider detail through `isContextWindowExceededError()` and surface `CONTEXT_WINDOW_EXCEEDED`, whether the failure arrives as a thrown HTTP `LlmError` or an in-band finish error. Consumers route on the code, never provider text.
- **Every provider HTTP request carries the app-attribution header.** Adapters send `attributionHeaders()` (below) - the `User-Agent` baseline - and prove it with a wire-level test (mock server asserting the received header, or the library's header hook for a library-backed adapter).
- **Replay state is adapter-owned.** A successful `finish` may carry lossless-JSON state needed to reconstruct a native provider response. The loop stores it with the assembled assistant message unless an `agent/step-result` listener rewrote the content. On a later request, `LlmService` passes the state only when the historical provider and target provider are currently registered to the exact same adapter instance. That adapter validates the state and owns any cross-model or cross-provider conversion; other adapters receive the provider-neutral content and provenance without the private state.
@@ -67,7 +68,7 @@ interface AppIdentity {
## `TokenUsage`
Per-call token accounting. Counts are **disjoint**: `inputTokens` is uncached input only; cached input is reported separately, and billed input is the sum of the three. Adapters whose providers fold cache hits into a single prompt total (DeepSeek's `prompt_tokens`) subtract them back out.
Per-call token accounting. Counts are **disjoint**: `inputTokens` is uncached input only; cached input is reported separately, and billed input is the sum of the three. Adapters whose providers fold cache hits into a single prompt total (DeepSeek's `prompt_tokens`) subtract them back out. `reasoningTokens`, when present, is informational detail already included in `outputTokens`; totals must not add it again.
```ts type-equiv
/**
@@ -91,10 +92,79 @@ interface TokenUsage {
`BlockAssembler` ([`packages/llm/llm/src/assembler.ts`](../../packages/llm/llm/src/assembler.ts)) is the single shared implementation that folds a `StreamChunk` stream back into `ContentBlock`s, usage, finish reason, and replay state. The loop logs the raw chunks while feeding the same chunks through an assembler, then stores the assembled assistant content with its provider/model provenance. A consumer that needs the assembled result without re-implementing the fold uses this.
```ts public-api
/**
* Incrementally assembles raw {@link StreamChunk}s into complete
* {@link ContentBlock}s and a final assistant {@link Message}.
*
* The agent loop feeds it while logging raw chunks for replay fidelity, then
* reads `blocks()` / `message()` / `usage` / `finish` once the stream ends.
*
* Tolerant of delta-only protocols (no block-start/end); deltas arriving for
* an index already closed by `block-end` are ignored (malformed stream) so a
* misbehaving adapter cannot grow memory or corrupt a completed block.
*/
declare class BlockAssembler {
/**
* Feed one chunk into the assembly state.
* @param chunk - the next raw chunk, in stream order.
*/
push(chunk: StreamChunk): void;
/**
* Assemble all blocks seen so far, in stream order.
* @returns one block per seen index; an open block assembles from its
* accumulated deltas (an unknown block type never closed by `block-end` throws).
*/
blocks(): ContentBlock[];
/** Usage from the `usage` chunk; undefined until one arrives. */
get usage(): TokenUsage | undefined;
/** Finish reason from the `finish` chunk; `{kind: 'stop'}` when the stream ended without one. */
get finish(): FinishReason;
/** Adapter-private replay state from the terminal finish chunk, if any. */
get replayState(): unknown;
/**
* The assembled assistant message.
* @returns an assistant-role message over `blocks()` (same open-block assembly rules).
*/
message(): Message;
}
```
## The seam
`LlmAdapter` is the provider seam: subclass, implement `stream()`, and register one adapter instance with `ctx.llm.registerAdapter(providers, adapter)`. `GenerateOptions.provider` selects the registered adapter; `GenerateOptions.model` is passed to that adapter and need not be registered at lifecycle start. Duplicate provider routes fail atomically. Optional `providerInfo()` and asynchronous `listModels()` methods feed `LlmService.listProviders()` / `listModels()` with detached selector metadata. That catalog is advisory rather than a request whitelist: the adapter remains authoritative and may accept unlisted model ids. Adapter lookup happens at the terminal continuation of the `llm/stream` waterfall, so a listener may short-circuit the call or route a mutable one-shot request before lookup. The `block-start` / `block-end` `index` correlation and the assembler together mean an adapter only has to emit well-formed chunks — block reassembly is not each adapter's problem. The consumer surface (`ctx.llm.stream()`) and the `llm/stream` waterfall are described in [architecture.md § Content blocks and streaming](../architecture.md#content-blocks-and-streaming-dsh-llm).
```ts public-api
/**
* Provider-wire adapter for the harness message and stream vocabulary. Register implementations
* with `ctx.llm.registerAdapter(providers, adapter)`. Every provider HTTP request must include
* `attributionHeaders()`; prove that at the wire or library header-hook boundary. The hand-rolled
* DeepSeek and pi-ai adapters intentionally exercise this contract through different internals.
*/
declare abstract class LlmAdapter {
/**
* Describe one provider route owned by this adapter.
* @param provider - a route passed to `registerAdapter()` for this instance.
* @returns detached display metadata whose id must equal `provider`.
*/
providerInfo(provider: string): LlmProviderInfo;
/**
* List models this adapter can currently advertise for one owned provider.
* The result is advisory: an adapter may accept unlisted model ids, and
* consumers must not turn absence into request rejection.
* @param _provider - one provider route owned by this adapter.
* @returns discoverable models in adapter-preferred order.
*/
listModels(_provider: string): Promise<readonly LlmModelInfo[]>;
/**
* Stream one model call as raw chunks. The only required method.
* @param options - the fully-assembled request; implementations must honor `options.signal`.
* @returns the chunk stream, obeying the adapter contract documented on `StreamChunk`.
*/
abstract stream(options: GenerateOptions): AsyncIterable<StreamChunk>;
}
```
`ContentBlockType` (the key set the `index`-correlated blocks carry) derives from `ContentBlockMap`:
```ts type-equiv

120
docs/core-data-structures/session.md
View File

@@ -305,6 +305,126 @@ interface SurfaceFoldResult {
}
```
## `Session` public API
The body-stripped declaration keeps the plain class's public constructor, state accessors, append boundary, and history projections synchronized with source. Store operations remain in the generated [`ctx.sessions` service catalog](../cordis-catalog/services.md#ctxsessions--sessionstore).
```ts public-api
/**
* An event-sourced session: an append-only log of {@link SessionEvent}s.
*
* Plain class (not a Service) — create instances via `ctx.sessions.create()`.
* Seeding with an existing event log replays/forks a session.
*/
declare class Session {
/** The ordered surface over this session's event log. */
get surface(): SessionSurface;
/**
* Detached, deep-frozen creation metadata (format version, cwd, lineage,
* seed boundary). Supplied by the store via `ctx.sessions.create()`. When a
* `Session` is constructed bare (tests, ad-hoc replay), a minimal header is
* synthesized (stamped with the current {@link SESSION_FORMAT_VERSION}) so
* `session.header` is always present. Kept out of the event log — it is a
* storage concern, not replayable conversation state.
*/
readonly header: SessionHeader;
/** The session identity, derived from its durable header's single copy. */
get id(): SessionId;
constructor(id: SessionId, seed?: readonly SessionEvent[], header?: SessionHeader);
/**
* An immutable snapshot of the append-only event log. The snapshot is reused
* until the next append; a previously returned array does not grow later.
* Events and their nested data are deep-frozen at acceptance, so neither a
* cast nor ordinary JavaScript can rewrite durable history.
*/
get events(): readonly SessionEvent[];
/** The next event's sequence number — always the log length (the `seq = log.length` contiguity contract). */
get seq(): number;
/**
* Append one typed event to the log and synchronously notify observers via
* the store-owned, module-private publication hooks. The hot path never blocks
* on I/O — persistence plugins buffer asynchronously. Once the event enters
* the log, the append is committed: observer failures are logged and
* contained per listener, so they do not change the return value or prevent
* later listeners from observing the same accepted event.
*
* @param type - The event type (key of {@link SessionEventMap}).
* @param data - The event payload; must be JSON-serializable.
* @param opts - Surface metadata: `surfaceOp` controls how the event enters
* the ordered surface; `sourceEventSeqs` records provenance (the seq
* numbers of events this one derives from). REQUIRED for
* {@link SurfaceEventType} events (every message-producing event must
* declare how it joins the surface, the sole source of derived history) and
* rejected by the compiler for non-surface types like `turn/start` or
* `assistant/chunk`.
* @returns the logged event — its assigned `seq`/`time` plus the SNAPSHOT of
* `data` that entered the log, so reading `event.data` back sees the logged
* value, never the caller's still-mutable input.
* @throws if `data` or surface metadata is not losslessly JSON-serializable
* (BigInt, function, symbol, undefined, negative zero, non-finite number,
* circular reference, sparse array, or an exotic object such as
* Map/Set/Date/class instance), or when the candidate violates the
* canonical surface contract (marker shape and eligibility, unique
* earlier provenance, positional replacement validity, and complete
* shadowed-node coverage). One recursive pass reads, validates, and
* copies each nested value once, so a stateful getter cannot supply one value
* to validation and another to storage. The event log is the durable source
* of truth, so a bad event fails at the append site rather than later during
* a backend flush. A synchronous internal dispatch validation failure or an
* append reentered while this acceptance/publication boundary is open also
* rejects before the log changes.
*/
append<T extends SessionEventType>(
type: T,
data: SessionEventMap[T],
...opts: T extends SurfaceEventType ? [opts: SurfaceIntent] : []
): SessionEvent<T>;
/**
* The {@link EpochHeader} in force after the log's last header event — the
* header the NEXT request will be compared against — or undefined before
* the first `request/header` snapshot. The live, incrementally-maintained
* form of `foldRequestHeader(session.events)`: each header event is folded
* once, when first seen, so a per-step read costs O(new events).
* @returns the folded header, or undefined when no header event exists yet.
*/
requestHeader(): EpochHeader | undefined;
/**
* Derive the LLM message history by walking the ordered sequences of
* message-producing events maintained by `surfaceOp` markers. The
* surface is the single source of derived history: every message-producing
* append records its `surfaceOp`, so a raw event with no marker (a chunk, a
* turn boundary) is correctly absent, and a compaction `replace` deletes the
* shadowed nodes from the derivation. The projection rules are
* {@link deriveEventMessage}, folded per node.
*
* CACHED: each surface node is projected exactly once, when first seen — a
* call costs O(new nodes), and a surface rewrite (a `replace`;
* {@link SessionSurface.replaceGeneration}) rebuilds. The returned array is
* a fresh snapshot per call (later appends never grow an array a caller
* already holds); the `Message` objects in it are SHARED and **deep-frozen**.
* Their content reuses the already frozen durable event data, so the cache
* needs no second deep clone and consumers still cannot mutate the log.
* @returns a fresh array of the shared, frozen derived history.
*/
deriveMessages(): Message[];
/**
* Project a single event into the LLM message it derives to, or null when
* it produces none — a non-surface event (chunk, boundary, log-only record)
* or an empty-content assistant/message (which exists only to host usage).
* The per-node pure function {@link deriveMessages} folds over the surface;
* an external reconstructor (or the dev invariant) folds the same function
* over a log prefix's surface to rebuild the exact messages any request was
* built from (the reconstructability RFC). The returned message wrapper is
* fresh; its content reuses the logged event's already deep-frozen durable
* data, so changing the wrapper cannot rewrite the log and changing content
* throws.
* @param event - the event to project.
* @returns the derived message, or null when the event produces none.
*/
deriveEventMessage(event: SessionEvent): Message | null;
}
```
## Derived history: `deriveMessages()` and `deriveEventMessage()`
`Session.deriveMessages()` projects the event log into the `Message[]` the model sees — cached (each surface node projected once, when first seen; a surface rewrite rebuilds) and frozen (a fresh array per call over shared, deep-frozen messages, so mutating logged history through a projection is unrepresentable). `deriveEventMessage(event)` is the per-node pure function the fold applies — public so external reconstructors and the dev invariant project a log prefix with exactly the same rules and cannot disagree with the cache. The projection rules:

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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
development.md: 452f4e82beaeacb23aa6bc3e7a60c0f2b1e2c95e
development.zh.md: 2285482726c43aa02d31c7d2094e2058de1d3863
development.md: a3268164cd06fb8bf66f52391bc42c2dc3ca9396
development.zh.md: f8f29c64aa6e49e3ed6d7ef12df2a4911c9182b0

4
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@@ -145,13 +145,13 @@ Pick the tag that matches the urgency so anyone scanning the code can tell a rel
## Documenting types verbatim (`ts type-equiv`)
The [core data structures](core-data-structures/core.md) docs paste real type declarations together with their original JSDoc so a reader sees the exact shape and source contract. To keep a paste from drifting when source changes, fence it as ` ```ts type-equiv ` (instead of ` ```ts `) and register it in `scripts/type-equiv.manifest.json` with the source file and symbol it mirrors:
The [core data structures](core-data-structures/core.md) docs paste source-equivalent declarations together with their original JSDoc so a reader sees the exact shape and source contract. To keep a paste from drifting when source changes, fence it as ` ```ts type-equiv ` (instead of ` ```ts `) and register it in `scripts/type-equiv.manifest.json` with the source file and symbol it mirrors:
```json
{ "doc": "docs/core-data-structures/session.md", "symbol": "SessionEvent", "source": "packages/core/session/src/types.ts" }
```
`pnpm run verify-type-equiv` (part of `doc-sync`) then extracts that symbol's declaration and attached JSDoc from source via the TypeScript parser and asserts the block matches both. Comparison ignores whitespace and non-JSDoc comments but requires every original JSDoc comment, including member documentation, so readers see the source contract beside the exact shape. The gate also enforces a 1:1 correspondence: every `ts type-equiv` block has exactly one manifest entry and vice-versa, so a block can't go silently unchecked and a stale entry can't linger. `doc-typecheck` skips `ts type-equiv` blocks (they aren't standalone-compilable) and excludes them from its opt-out ratio. When you change a documented declaration or its JSDoc, the gate fails until you update the paste; when you add or remove a block, update the manifest in the same change.
`pnpm run verify-type-equiv` (part of `doc-sync`) then extracts that symbol's declaration and attached JSDoc from source via the TypeScript parser and asserts the block matches both. For a class whose implementation bodies do not belong in the catalog, use ` ```ts public-api ` and set `"projection": "public-api"`; the checked projection retains the public fields, constructor, accessors, methods, and original class/member JSDoc while omitting bodies and private or protected members. Comparison ignores whitespace and non-JSDoc comments but requires every original JSDoc comment, including member documentation, so readers see the source contract beside the exact shape. The gate also enforces a 1:1 correspondence by document, symbol, and projection, so a block can't go silently unchecked and a stale entry can't linger. `doc-typecheck` skips both fence kinds (they aren't standalone-compilable) and excludes them from its opt-out ratio. When you change a documented declaration or its JSDoc, the gate fails until you update the paste; when you add or remove a block, update the manifest in the same change.
## Architecture context

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@@ -145,13 +145,13 @@ pnpm run demo:acp
## 逐字记录类型（`ts type-equiv`）
[核心数据结构](core-data-structures/core.md)文档会把真实类型声明及其原始 JSDoc 一并粘贴，让读者看到确切形状和源码契约。为防止粘贴内容在源码变化时漂移，请将其围栏为 ` ```ts type-equiv `（而不是 ` ```ts `），并在 `scripts/type-equiv.manifest.json` 中登记它镜像的源文件和符号：
[核心数据结构](core-data-structures/core.md)文档会把与源码等价的声明及其原始 JSDoc 一并粘贴，让读者看到确切形状和源码契约。为防止粘贴内容在源码变化时漂移，请将其围栏为 ` ```ts type-equiv `（而不是 ` ```ts `），并在 `scripts/type-equiv.manifest.json` 中登记它镜像的源文件和符号：
```json
{ "doc": "docs/core-data-structures/session.md", "symbol": "SessionEvent", "source": "packages/core/session/src/types.ts" }
```
`pnpm run verify-type-equiv`（`doc-sync` 的一环）随后通过 TypeScript 解析器从源码提取该符号的声明及其附带的 JSDoc，并断言代码块同时匹配两者。比对会忽略空白和非 JSDoc 注释，但要求保留每条原始 JSDoc（包括成员文档），让读者同时看到源码契约和确切形状。该门禁还强制 1:1 对应：每个 `ts type-equiv` 块恰好有一条 manifest 条目，反之亦然；因此不会有块被静默漏检，也不会有陈旧条目滞留。`doc-typecheck` 跳过 `ts type-equiv` 块（它们不能独立编译），并将其排除在 opt-out 比例之外。当你改动一个已记录的类型声明或其 JSDoc 时，门禁会失败直到你更新粘贴内容；当你增删一个块时，请在同一个变更里更新 manifest。
`pnpm run verify-type-equiv`（`doc-sync` 的一环）随后通过 TypeScript 解析器从源码提取该符号的声明及其附带的 JSDoc，并断言代码块同时匹配两者。对于不应把实现体写进目录的类，请使用 ` ```ts public-api ` 并设置 `"projection": "public-api"`；门禁检查的投影会保留公共字段、构造函数、访问器、方法以及类和成员的原始 JSDoc，同时省略实现体和私有或受保护成员。比对会忽略空白和非 JSDoc 注释，但要求保留每条原始 JSDoc（包括成员文档），让读者同时看到源码契约和确切形状。该门禁还按文档、符号和投影强制 1:1 对应，因此不会有块被静默漏检，也不会有陈旧条目滞留。`doc-typecheck` 跳过两种围栏（它们不能独立编译），并将其排除在 opt-out 比例之外。当你改动一个已记录的类型声明或其 JSDoc 时，门禁会失败直到你更新粘贴内容；当你增删一个块时，请在同一个变更里更新 manifest。
## 架构上下文

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@@ -8,27 +8,29 @@ This matrix shows which packages dispatch each harness-owned event and which pac
| Event | Mode | Declared in | Dispatchers | Listeners |
| --- | --- | --- | --- | --- |
| `agent-loop/config-start-failed` | `emit` | [`packages/core/agent-loop/src/index.ts:362`](../packages/core/agent-loop/src/index.ts) | [`agent-loop`](../packages/core/agent-loop) (`events.dispatch`) | [`stdio`](../packages/ui/stdio), [`tui`](../packages/ui/tui) |
| `agent/created` | `emit` | [`packages/core/agent/src/types.ts:141`](../packages/core/agent/src/types.ts) | [`agent`](../packages/core/agent) (`events.dispatch`) | [`stdio`](../packages/ui/stdio), [`tui`](../packages/ui/tui) |
| `agent/disposed` | `emit` | [`packages/core/agent/src/types.ts:150`](../packages/core/agent/src/types.ts) | [`agent`](../packages/core/agent) (`events.dispatch`) | [`agent-loop`](../packages/core/agent-loop), [`stdio`](../packages/ui/stdio), [`tui`](../packages/ui/tui) |
| `agent/error` | `emit` | [`packages/core/agent/src/types.ts:285`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`tui`](../packages/ui/tui) |
| `agent/pre-step` | `serial` | [`packages/core/agent/src/types.ts:204`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`compact-basic`](../packages/compact/compact-basic), [`time-context`](../packages/context/time-context), [`user-approval`](../packages/ui/user-approval) |
| `agent/created` | `emit` | [`packages/core/agent/src/types.ts:147`](../packages/core/agent/src/types.ts) | [`agent`](../packages/core/agent) (`events.dispatch`) | [`stdio`](../packages/ui/stdio), [`tui`](../packages/ui/tui) |
| `agent/disposed` | `emit` | [`packages/core/agent/src/types.ts:156`](../packages/core/agent/src/types.ts) | [`agent`](../packages/core/agent) (`events.dispatch`) | [`agent-loop`](../packages/core/agent-loop), [`stdio`](../packages/ui/stdio), [`tui`](../packages/ui/tui) |
| `agent/error` | `emit` | [`packages/core/agent/src/types.ts:311`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`tui`](../packages/ui/tui) |
| `agent/post-step` | `serial` | [`packages/core/agent/src/types.ts:264`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`compact-basic`](../packages/compact/compact-basic) |
| `agent/pre-step` | `serial` | [`packages/core/agent/src/types.ts:204`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`time-context`](../packages/context/time-context), [`user-approval`](../packages/ui/user-approval) |
| `agent/prompt-submit` | `waterfall` | [`packages/core/agent/src/types.ts:214`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`acp`](../packages/ui/acp), [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex), [`repeat-tool-guard`](../packages/guard/repeat-tool-guard) |
| `agent/queued` | `emit` | [`packages/core/agent/src/types.ts:169`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | - |
| `agent/queued` | `emit` | [`packages/core/agent/src/types.ts:175`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | - |
| `agent/request` | `waterfall` | [`packages/core/agent/src/types.ts:226`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`acp`](../packages/ui/acp) |
| `agent/request-error` | `waterfall` | [`packages/core/agent/src/types.ts:278`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`compact-basic`](../packages/compact/compact-basic) |
| `agent/session-prefix` | `waterfall` | [`packages/core/agent/src/types.ts:241`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`tool-skill`](../packages/skill/tool-skill), [`workspace-context`](../packages/context/workspace-context) |
| `agent/session-start` | `emit` | [`packages/core/agent/src/types.ts:182`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex), [`stdio`](../packages/ui/stdio) |
| `agent/status` | `emit` | [`packages/core/agent/src/types.ts:159`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`invariants`](../packages/support/invariants), [`stdio`](../packages/ui/stdio), [`tui`](../packages/ui/tui) |
| `agent/session-start` | `emit` | [`packages/core/agent/src/types.ts:188`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex), [`stdio`](../packages/ui/stdio) |
| `agent/status` | `emit` | [`packages/core/agent/src/types.ts:165`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`invariants`](../packages/support/invariants), [`stdio`](../packages/ui/stdio), [`tui`](../packages/ui/tui) |
| `agent/step-result` | `waterfall` | [`packages/core/agent/src/types.ts:252`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | - |
| `agent/turn-continuation` | `waterfall` | [`packages/core/agent/src/types.ts:262`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex) |
| `agent/turn-stop` | `serial` | [`packages/core/agent/src/types.ts:272`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`subagent-inprocess`](../packages/subagent/subagent-inprocess) |
| `agent/turn-continuation` | `waterfall` | [`packages/core/agent/src/types.ts:288`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex) |
| `agent/turn-stop` | `serial` | [`packages/core/agent/src/types.ts:298`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`subagent-inprocess`](../packages/subagent/subagent-inprocess) |
| `approval/request` | `waterfall` | [`packages/ui/user-approval/src/index.ts:31`](../packages/ui/user-approval/src/index.ts) | [`user-approval`](../packages/ui/user-approval) (`waterfall`) | [`acp`](../packages/ui/acp) |
| `fs/edit-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:61`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`waterfall`) | [`fs-policy`](../packages/fs/fs-policy) |
| `fs/observed` | `emit` | [`packages/fs/fs/src/index.ts:70`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`emit`) | [`fs-policy`](../packages/fs/fs-policy) |
| `fs/write-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:53`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`waterfall`) | [`fs-policy`](../packages/fs/fs-policy) |
| `llm/stream` | `waterfall` | [`packages/llm/llm/src/index.ts:40`](../packages/llm/llm/src/index.ts) | [`llm`](../packages/llm/llm) (`waterfall`) | [`invariants`](../packages/support/invariants), [`llm-replay`](../packages/support/llm-replay) |
| `llm/stream` | `waterfall` | [`packages/llm/llm/src/index.ts:43`](../packages/llm/llm/src/index.ts) | [`llm`](../packages/llm/llm) (`waterfall`) | [`invariants`](../packages/support/invariants), [`llm-replay`](../packages/support/llm-replay) |
| `session/created` | `emit` | [`packages/core/session/src/index.ts:47`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | [`invariants`](../packages/support/invariants), [`jsonrpc`](../packages/ui/jsonrpc), [`session-persistence`](../packages/session-persistence/session-persistence) |
| `session/disposed` | `emit` | [`packages/core/session/src/index.ts:57`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | [`agent-loop`](../packages/core/agent-loop), [`session-persistence`](../packages/session-persistence/session-persistence) |
| `session/event` | `emit` | [`packages/core/session/src/index.ts:69`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | [`acp`](../packages/ui/acp), [`invariants`](../packages/support/invariants), [`jsonrpc`](../packages/ui/jsonrpc), [`session-persistence`](../packages/session-persistence/session-persistence), [`stdio`](../packages/ui/stdio), [`token-meter`](../packages/llm/token-meter), [`tui`](../packages/ui/tui), [`workspace-context`](../packages/context/workspace-context) |
| `session/event` | `emit` | [`packages/core/session/src/index.ts:69`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | [`acp`](../packages/ui/acp), [`cli-demo`](../packages/examples/cli-demo), [`invariants`](../packages/support/invariants), [`jsonrpc`](../packages/ui/jsonrpc), [`session-persistence`](../packages/session-persistence/session-persistence), [`stdio`](../packages/ui/stdio), [`token-meter`](../packages/llm/token-meter), [`tui`](../packages/ui/tui), [`workspace-context`](../packages/context/workspace-context) |
| `session/flush` | `parallel` | [`packages/core/session/src/index.ts:79`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | [`session-persistence`](../packages/session-persistence/session-persistence) |
| `subagent/end` | `emit` | [`packages/subagent/subagent/src/index.ts:112`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`events.dispatch`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`jsonrpc`](../packages/ui/jsonrpc) |
| `subagent/provider-added` | `emit` | [`packages/subagent/subagent/src/index.ts:86`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`emit`) | [`tool-subagent`](../packages/subagent/tool-subagent) |
@@ -53,5 +55,6 @@ This matrix shows which packages dispatch each harness-owned event and which pac
| Event string | Dispatchers | Listeners |
| --- | --- | --- |
| `internal/dispatch` | - | [`invariants`](../packages/support/invariants) |
| `internal/status` | - | [`agent`](../packages/core/agent) |
Maintenance mode: generated: Cordis event declarations and producer/listener edges are resolved from the repository TypeScript Program.

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@@ -15,6 +15,7 @@ The process decision behind this index is recorded in [the documentation graph R
| [echo-agent app composition](../examples/echo-agent/composition.md) | `hybrid generated` |
| [repl-agent app composition](../examples/repl-agent/composition.md) | `hybrid generated` |
| [tui-agent app composition](../examples/tui-agent/composition.md) | `hybrid generated` |
| [headless-agent app composition](../examples/headless-agent/composition.md) | `hybrid generated` |
| [cordis-agent app composition](../examples/cordis-agent/composition.md) | `hybrid generated` |
| [acp-agent app composition](../examples/acp-agent/composition.md) | `hybrid generated` |
| [event producer/consumer matrix](event-producer-consumer.md) | `hybrid generated` |

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@@ -123,6 +123,7 @@ flowchart TD
subgraph group_examples["packages/examples"]
pkg_acp_demo["acp-demo"]
pkg_agent_spine_demo["agent-spine-demo"]
pkg_cli_demo["cli-demo"]
pkg_jsonrpc_demo["jsonrpc-demo"]
pkg_stdio_demo["stdio-demo"]
end
@@ -420,6 +421,14 @@ flowchart TD
pkg_acp_demo --> pkg_tools
pkg_acp_demo --> pkg_user_interaction
pkg_acp_demo --> pkg_workspace_context
pkg_cli_demo --> pkg_agent
pkg_cli_demo --> pkg_agent_spine_demo
pkg_cli_demo --> pkg_app_boot
pkg_cli_demo --> pkg_llm
pkg_cli_demo --> pkg_session
pkg_cli_demo --> pkg_session_persistence_jsonl
pkg_cli_demo --> pkg_tools
pkg_cli_demo --> pkg_workspace_context
pkg_stdio_demo --> pkg_agent
pkg_stdio_demo --> pkg_agent_loop
pkg_stdio_demo --> pkg_agent_spine_demo
@@ -524,4 +533,5 @@ flowchart TD
| [`subagent-fork`](../packages/subagent/subagent-fork) | `subagent` | [`agent`](../packages/core/agent), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`subagent-inprocess`](../packages/subagent/subagent-inprocess) |
| [`subagent-spawn`](../packages/subagent/subagent-spawn) | `subagent` | [`subagent`](../packages/subagent/subagent), [`subagent-inprocess`](../packages/subagent/subagent-inprocess) |
| [`acp-demo`](../packages/examples/acp-demo) | `examples` | [`acp`](../packages/ui/acp), [`agent-spine-demo`](../packages/examples/agent-spine-demo), [`app-boot`](../packages/ui/app-boot), [`session-persistence-jsonl`](../packages/session-persistence/session-persistence-jsonl), [`tools`](../packages/core/tools), [`user-interaction`](../packages/ui/user-interaction), [`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), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-persistence-jsonl`](../packages/session-persistence/session-persistence-jsonl), [`tools`](../packages/core/tools), [`workspace-context`](../packages/context/workspace-context) |
| [`stdio-demo`](../packages/examples/stdio-demo) | `examples` | [`agent`](../packages/core/agent), [`agent-loop`](../packages/core/agent-loop), [`agent-spine-demo`](../packages/examples/agent-spine-demo), [`app-boot`](../packages/ui/app-boot), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-persistence-jsonl`](../packages/session-persistence/session-persistence-jsonl), [`stdio`](../packages/ui/stdio), [`tool-ask-user`](../packages/ui/tool-ask-user), [`tools`](../packages/core/tools), [`tui`](../packages/ui/tui), [`user-interaction`](../packages/ui/user-interaction), [`workspace-context`](../packages/context/workspace-context) |

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@@ -168,9 +168,11 @@ Generated by `pnpm run gen-rfc-index` from the RFC tree — never edit by hand;
| [Tool-call timeout policy as a plugin](implemented/architecture/2026-07-07-tool-call-timeout-policy.md) | 2026-07-07 |
| [The agent is a registration scope](implemented/architecture/2026-07-08-agent-scope-contexts.md) | 2026-07-08 |
| [Tool output spill policy](implemented/architecture/2026-07-08-tool-output-spill-files.md) | 2026-07-08 |
| [After-call compaction pressure and context-overflow recovery](implemented/architecture/2026-07-10-after-call-compaction-pressure-and-overflow-recovery.md) | 2026-07-10 |
| [Single-file executable SDK runtime distribution (single-exe)](implemented/architecture/2026-07-10-single-file-executable-sdk-runtime-distribution.md) | 2026-07-10 |
| [Agent-scope runtime design and correctness](implemented/architecture/2026-07-12-agent-scope-runtime-design.md) | 2026-07-12 |
| [Provider-routed LLM adapters and a generic pi-ai backend](implemented/architecture/2026-07-14-provider-routed-llm-adapters.md) | 2026-07-14 |
| [Initiating Agent scope over AsyncLocalStorage](implemented/architecture/2026-07-15-agent-initiator-scope.md) | 2026-07-15 |
| [Advisory LLM catalogs and per-session ACP model selection](implemented/architecture/2026-07-15-llm-model-catalog-and-acp-selection.md) | 2026-07-15 |
| [Replay token meter service](implemented/architecture/2026-07-15-replay-token-meter-service.md) | 2026-07-15 |

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@@ -10,8 +10,8 @@ The product principle is "everything is a plugin": hooks, /goal, /loop, dynamic
Pure Cordis event taxonomy. The loop's extension seams are typed events with deliberate dispatch modes:
- **waterfall** (around-middleware) where plugins transform, veto, or wrap: `agent/prompt-submit`, `agent/request`, `agent/step-result`, `agent/turn-continuation`, `tools/pre-execute`, `tools/execute`, `tools/post-execute`, `llm/stream`, `system-prompt/assemble`.
- **serial** (awaited in listener order; a bail value stops later listeners) for ordered checkpoints: every `agent/pre-step` listener runs when all abstain, while the first stop returned from `agent/turn-stop` makes the terminal decision final.
- **waterfall** (around-middleware) where plugins transform, veto, recover, or wrap: `agent/prompt-submit`, `agent/request`, `agent/request-error`, `agent/step-result`, `agent/turn-continuation`, `tools/pre-execute`, `tools/execute`, `tools/post-execute`, `llm/stream`, `system-prompt/assemble`.
- **serial** (awaited in listener order; a bail value stops later listeners) for ordered checkpoints: every `agent/pre-step` and `agent/post-step` listener runs when all abstain, while the first stop returned from `agent/turn-stop` makes the terminal decision final.
- **parallel** (awaited fan-out) where every listener must get an independent chance: the `session/flush` durability checkpoint.
- **emit** (synchronous fire-and-forget) for notifications: turn/step boundaries, stream chunks, lifecycle, errors, and the contained immutable `tools/result` observation.

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@@ -30,7 +30,7 @@ Plugins register `{{name}}` values through `ctx.systemPrompt.variable(name, prov
### Persona as the order-0 section
`dsh-system-prompt` owns `harness:identity` at order `-100` and the configured `deployment:persona` at order 0, so both survive a replacement loop. Prompt rendering has one path, `renderPrompt(assembly)`, and `agent/pre-step` therefore measures the exact prompt used for compaction. An agent-scoped `deployment:persona` shadows the global default and lets subagent providers install a persona before publication. The conventional order bands are identity `-100`, persona `0`, and tool guidance `100–199`.
`dsh-system-prompt` owns `harness:identity` at order `-100` and the configured `deployment:persona` at order 0, so both survive a replacement loop. Prompt rendering has one path, `renderPrompt(assembly)`, and the routed request header therefore records the exact prompt later replayed by `ctx.tokenMeter` for compaction pressure. An agent-scoped `deployment:persona` shadows the global default and lets subagent providers install a persona before publication. The conventional order bands are identity `-100`, persona `0`, and tool guidance `100–199`.
### Tool guidance ownership
@@ -43,7 +43,7 @@ Per-tool semantics and selection guidance live in tool descriptions. Prompt sect
## Alternatives considered
- **The loop composes an identity line itself** — hardcodes model-facing prose in the one package that must stay thin ("plugins, not loop changes"), and outside the section pipeline it would be a second composition path. (The identity DOES ship as a code literal — but as an ordinary section registered by `dsh-system-prompt`, whose `system-prompt/assemble` waterfall remains the escape valve for a deployment that must drop it.)
- **Inject the model name via the `agent/request` waterfall** — prompt text composed in two places, and `agent/pre-step`'s `fullSystemPrompt` would omit it, so compaction would measure a prompt that is not what the model sees.
- **Inject the model name via the `agent/request` waterfall** — prompt text would be composed in two places and the earlier rendered persona could disagree with the final routed header. The request plugin that owns late routing must also own any earlier prompt claim about that model.
- **Hand-write the model name in each persona** — duplicates the `model:` key one line above and silently lies after a config edit; the exact disease this RFC cures.
- **Lenient interpolation (leave unknown refs verbatim, or substitute empty)** — a typo ships `{{modle}}` (or a hole) to the model and nobody notices until transcript review.
- **Per-instance subagent wording in config** — returns model-facing prose to every deployment × instance, the P2 disease again. **Keying wording off the provider NAME** — `providerName` is itself config, so a renamed provider silently gets the wrong words.

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@@ -12,7 +12,7 @@ The reference shape for the happy path is MiniCode's `LLMClient`: a stateful con
### The principle
**Model-visible ⟺ logged.** Anything that reaches a model request must be recorded in the session log. The checkable consequence: **every conversation request the loop sends is a pure function of the session log** — anyone holding the log reconstructs it byte-for-byte. Scope, stated precisely: the guarantee covers the loop-built `GenerateOptions`; provider wire bytes follow from it because both adapters' serialization is a pure per-message function at a pinned code version; direct one-shots (compaction's summarize call) log their envelope scalars (`compact/summary.{model, maxTokens}`) and their input is deterministic code over the logged region — reconstructable from log + code, outside the invariant by the unfrozen-request marker.
**Model-visible ⟺ logged.** Anything that reaches a model request must be recorded in the session log. The checkable consequence: **every conversation request the loop sends is a pure function of the session log** — anyone holding the log reconstructs it byte-for-byte. Scope, stated precisely: the guarantee covers the loop-built `GenerateOptions`; provider wire bytes follow from it because both adapters' serialization is a pure per-message function at a pinned code version; direct one-shots (compaction's summarize call) log their envelope scalars (`compact/summary.{provider, model, maxTokens}`) and their input is deterministic code over the logged region — reconstructable from log + code, outside the invariant by the unfrozen-request marker.
Prefix-cache stability is corollary #1, not the headline: an append-only log projected by a per-node pure function yields requests that are append-extensions of their predecessors whenever the header is unchanged — stability is emergent, not managed. Byte-exact audit/replay is corollary #2; resume and fork with *attributable* drift is corollary #3.
@@ -22,9 +22,9 @@ Prefix-cache stability is corollary #1, not the headline: an append-only log pro
`EpochHeader` records the request's non-history state: call config, rendered system prompt, tool schemas, and session prefix, with empty values canonicalized to absence. `request/header` always writes a full snapshot: the first loop instance uses reason `initial`, later instances use `resume`, and an in-instance change uses `change`. `foldRequestHeader` selects the latest snapshot. Legacy `request/header-delta` events and the removed `fallback` reason are rejected when appended or loaded.
Each step rebuilds prompt assembly. On the instance's first step, `agent/session-prefix` extends a frozen empty seed with request-only opener messages; the result is frozen and cached for that loop instance. `agent/pre-step` then receives the composed prefix before messages are snapshotted immediately ahead of `step/start`. The first call config starts from explicit `AgentOptions`, preserving fork overrides and resume reconfiguration; later calls start from the folded header. `agent/request` may replace only that frozen config seed, while model-visible content enters through logged channels. The loop records the owed header event—the prefix's only durable home—builds `GenerateOptions` from prefix, snapshot, and header, and deep-freezes it while leaving `AbortSignal` live. Per-instance state is only the cached prefix and whether its anchoring snapshot has been written.
Each step rebuilds prompt assembly. On the instance's first step, `agent/session-prefix` extends a frozen empty seed with request-only opener messages; the result is frozen and cached for that loop instance before the generic `agent/pre-step` checkpoint and boundary snapshot. The first call config starts from explicit `AgentOptions`, preserving fork overrides and resume reconfiguration; later calls start from the folded header. `agent/request` may replace only that frozen config seed, while model-visible content enters through logged channels. The loop records the owed header event—the prefix's only durable home—builds `GenerateOptions` from prefix, snapshot, and header, and deep-freezes it while leaving `AbortSignal` live. Per-instance state is only the cached prefix and whether its anchoring snapshot has been written.
**`step/start` is the reconstruction boundary.** A step derives messages from events before that sequence. Injection after the snapshot joins the next request, and reentrant appends are rejected during event publication. `agent/pre-step` is the seam for content needed by the current request. Header reconstruction selects the step's `request/header`, or carries the prior snapshot when no new header is written.
**`step/start` is the reconstruction boundary.** A step derives messages from events before that sequence. Injection after the snapshot joins the next request, and reentrant appends are rejected during event publication. `agent/pre-step(agent, turn, step, signal)` remains the generic seam for content needed by the current request. Header reconstruction selects the step's `request/header`, or carries the prior snapshot when no new header is written.
**Enforcement.** In development, `dsh-invariants` independently rebuilds each loop request through a fresh `Session`, so the live cache cannot vouch for itself, then compares messages and folded header fields at `llm/stream`. Loop requests are identified by their frozen shape and session id; direct one-shots are excluded. Correctness depends on sequence-bounded reconstruction rather than listener order. A with-key e2e requires positive cache-read tokens after the first request; per-step usage is the production signal, and a header change or compaction appears as a cache-read drop on the next step.

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# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
# 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
2026-07-10-after-call-compaction-pressure-and-overflow-recovery.md: d88d7aaea8ccec30b10bfeb17f1312cfe87a0ce7
2026-07-10-after-call-compaction-pressure-and-overflow-recovery.zh.md: 42e6114304de9c8022ef8f1341035858c0c7d9ec

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# RFC: After-call compaction pressure and context-overflow recovery
Status: implemented
English | [中文](2026-07-10-after-call-compaction-pressure-and-overflow-recovery.zh.md)
## Problem
`agent/pre-step` runs before final request routing and before assistant output, tool results, buffered context, and steering exist. Even with the assembled prompt and session prefix, its pressure view is provisional because `agent/request` can still change routing or call configuration and tool schemas are not frozen with those inputs. Adding fields cannot make pre-call state describe a completed call and couples the generic seam to compaction.
Successful calls are not the only pressure signal. A provider can reject a request for exceeding its context window before it returns usage, and some successful calls omit usage. The system therefore needs replayable post-call pressure plus a narrow failure-recovery path that preserves the provider error whenever compaction cannot prove useful progress.
## Decision
### Successful pressure moves to a durable post-step checkpoint
`agent/pre-step` is narrowed to `(agent, turn, step, signal)`. It remains a generic serial checkpoint before `step/start`, but it carries no compaction-only prompt or prefix fields.
The loop fires awaited serial `agent/post-step(agent, turn, step, signal)` after assistant output, every dispatched or synthetic tool result, post-tool context, and steering are durable, but before `step/end`. This placement gives pressure policy the complete successful-call state without splitting an assistant tool call from its result. A listener failure is an ordinary turn failure; it never enters model-request recovery.
`dsh-compact-basic` reads the exact latest routed model from the durable request header only to establish that a completed route exists, then asks the singleton `ctx.tokenMeter` to measure the canonical logged envelope and current surface. It does not fall back to `AgentOptions.model` for automatic pressure. A headerless session has no completed routed request to assess and produces no work; any durable non-empty model name uses the same estimator. Operational measurement or summarization failures warn and continue with full history.
### Request recovery is limited to the final model boundary
`RequestError`, `RequestErrorDecision`, and the `agent/request-error` waterfall represent failures after the final adapter has been selected. Each returned stream handle owns a private failure set that preserves the original thrown error identity across dispatch, iterator construction, and iteration without leaking nested-call provenance into an outer call. Terminal in-band `error` or `aborted` finishes enter the same path. Prompt assembly, request middleware, request logging, result processing, tools, post-step listeners, and cleanup remain ordinary failures.
The failed step closes before recovery runs. A retry opens the next numbered step and rebuilds the request from the durable log; consecutive recovery attempts reset only after a successful provider request. Both DeepSeek adapters normalize recognized provider context-limit failures to `CONTEXT_WINDOW_EXCEEDED`.
If cancellation lands after assistant tool calls are durable but before all calls dispatch, the loop records a synthetic `tool/call` and aborted `tool/result` pair for every undispatched call before following the normal abort path. The surface therefore never retains orphaned durable tool calls merely because cancellation won the race.
### CompactService exposes intent, not token accounting
`CompactService.compactIfNeeded(agent, trigger, signal)` accepts `trigger: 'pressure' | 'context-overflow'`. The interface gains no estimation methods or token types; `ctx.tokenMeter` remains the reusable accounting owner.
For `pressure`, compact-basic applies the service-wide threshold and retained-tail policy to one unified `ctx.tokenMeter.measure()` result. The same singleton meter owns range pricing, provenance, shadowed token counts, and non-shrinking-summary rejection. The common defaults remain threshold ratio `0.8`, retained history `floor(contextWindow × 0.16)`, summarization provider/model `''`, `maxTokens: 8192`, `compactionRetries: 1`, and `auto: true`.
For canonical overflow, compact-basic bypasses scalar pressure and the normal retained-token budget. It chooses the maximal tool-balanced head range while leaving the newest indivisible unit, then attempts exactly one shrinking compaction under the same signal. The automatic listener snapshots `session.surface.replaceGeneration` and returns `{ action: 'retry' }` only when compaction succeeds and the generation increases. A backend returning a result without replacement cannot authorize retry.
`maxOverflowRetries` is optional and defaults to `1`; `0` disables overflow recovery without disabling pressure. `auto: false` registers neither automatic listener. Noncanonical errors, exhausted attempts, an already-aborted signal, a missing routed model, no safe range, no generation change, and recovery throws all delegate to the next listener. With no later recovery, the loop reports the original provider error object and code. Cancellation or disposal remains authoritative even if recovery work completes concurrently.
The default summarizer resolves explicit configuration, then the latest logged route, then agent options. Because direct `llm/stream` middleware may reroute that auxiliary call, `compact/summary.{provider, model}` records the final mutable `GenerateOptions` target observed after dispatch rather than the pre-waterfall candidate.
## Testing
Unit tests cover final-adapter failure provenance and identity, closed-step retry numbering and reset, cancellation and disposal, post-step ordering, routed-envelope pressure, balanced overflow reduction, generation proof, caps, delegation, and auxiliary-call routing. Real-loop tests cover thrown and in-band overflow through compaction to a reconstructed retry request.
## Alternatives considered
- **Keep provisional pre-step pressure and add more arguments** — rejected because later routing and request mutation remain outside any earlier snapshot, while generic lifecycle becomes coupled to one plugin.
- **Retry the same numbered step** — rejected because recovery appends durable events after the failed boundary. A new step preserves balanced nesting and reconstructability.
- **Retry whenever `compactIfNeeded` returns a result** — rejected because a custom backend can report success without changing model-visible state. `replaceGeneration` is the authoritative proof.
- **Let compact-basic parse provider wording** — rejected because classification belongs at adapters and must cover both thrown and in-band delivery.
- **Fall back to `AgentOptions.model` when no durable route exists** — rejected because automatic policy must describe a completed logged request. Headerless pressure and recovery delegate unchanged.
## Consequences
Post-step pressure describes the completed routed request, including durable tool results and request-only prefix fields. Canonical overflow supplies the backstop when no successful usage anchor exists. Recovery is bounded, cancellation-owned, and monotonic: it retries only after a visible surface generation change.
The cost is one additional serial checkpoint on successful steps and adapter-maintained overflow classification. Provider wording and heuristic character density remain maintenance risks. Surface compaction still cannot repair an envelope that alone exceeds the window or split one indivisible oversized message/tool unit.
This RFC supersedes only the pre-step automatic-trigger portion of the [compaction capability-seam RFC](../feature/2026-06-18-compaction-capability-seam.md). The service split, standalone token meter, balanced range contract, log-recorded lock, summary replacement, and sole `summarize()` subclass hook remain unchanged.

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# RFC：调用后压缩压力与上下文溢出恢复
Status: implemented
[English](2026-07-10-after-call-compaction-pressure-and-overflow-recovery.md) | 中文
## 问题
`agent/pre-step` 运行在最终请求路由之前，也早于 assistant 输出、工具结果、缓冲上下文与 steering 的产生。即使它接收已装配提示词与会话前缀，压力视图仍是临时的，因为 `agent/request` 还可以改变路由或调用配置，工具 schema 也没有与这些输入一同冻结。增加字段无法让调用前状态描述已完成调用，还会把通用 seam 与压缩耦合。
成功调用也不是唯一的压力信号。提供方可能在返回 usage 之前就因上下文窗口超限拒绝请求，一些成功调用也不提供 usage。因此，系统需要可回放的调用后压力，以及一条狭窄的失败恢复路径；当压缩无法证明取得有效进展时，必须保留原始提供方错误。
## 决策
### 成功压力移动到持久 post-step 检查点
`agent/pre-step` 收窄为 `(agent, turn, step, signal)`。它仍是 `step/start` 之前的通用串行检查点，但不再携带压缩专用的提示词或前缀字段。
循环在 assistant 输出、所有已分发或合成的工具结果、工具后上下文与 steering 都持久化之后、`step/end` 之前，触发等待式串行 `agent/post-step(agent, turn, step, signal)`。该位置让压力策略看到完整的成功调用状态，同时不会拆开 assistant 工具调用与其结果。监听器失败属于普通 turn 失败，绝不会进入模型请求恢复。
`dsh-compact-basic` 从持久请求头读取精确的最新实际路由模型，只用它确认已经存在完整路由，随后让单例 `ctx.tokenMeter` 计量规范日志信封与当前表层。自动压力不会回退到 `AgentOptions.model`。没有请求头的会话尚无已完成路由请求可供判断，因此不执行工作；任意持久记录的非空模型名都使用同一个估算器。操作性的计量或摘要失败会发出警告，并继续使用完整历史。
### 请求恢复只覆盖最终模型边界
`RequestError`、`RequestErrorDecision` 与 `agent/request-error` waterfall 表示最终适配器已经选定之后的失败。每个返回的流句柄都绑定一个私有失败集合；该集合在分发、异步迭代器构造与迭代过程中保留原始抛出错误的身份，同时防止把嵌套调用的错误来源误归到外层调用。终止性的带内 `error` 或 `aborted` finish 进入同一路径。提示词装配、请求中间件、请求日志、结果处理、工具、post-step 监听器与清理仍属于普通失败。
恢复运行前，失败 step 已经关闭。重试会打开下一个编号 step，并从持久日志重建请求；连续恢复尝试计数只在提供方请求成功后重置。两个 DeepSeek 适配器都把识别出的提供方上下文限制错误规范化为 `CONTEXT_WINDOW_EXCEEDED`。
如果取消发生在 assistant 工具调用已经持久化之后、所有调用完成分发之前，循环会为每个尚未分发的调用记录一对合成的 `tool/call` 与 aborted `tool/result`，随后进入正常中止路径。因此，表层不会仅因取消赢得竞态而留下孤立的持久工具调用。
### CompactService 暴露意图，而不拥有 token 核算
`CompactService.compactIfNeeded(agent, trigger, signal)` 接收 `trigger: 'pressure' | 'context-overflow'`。接口不增加估算方法或 token 类型；`ctx.tokenMeter` 继续作为可复用的核算所有者。
对于 `pressure`，compact-basic 把服务级阈值与保留尾部策略应用到一次统一的 `ctx.tokenMeter.measure()` 结果。范围定价、来源、被遮蔽 token 数与非缩小摘要拒绝也由同一个单例 meter 完成。通用默认值保持为阈值比例 `0.8`、保留历史 `floor(contextWindow × 0.16)`、摘要提供方/模型 `''`、`maxTokens: 8192`、`compactionRetries: 1` 与 `auto: true`。
对于规范化溢出，compact-basic 绕过标量压力与普通保留 token 预算。它在保留最新不可分割单元的同时，选择最大的工具配对平衡头部范围，并在同一 signal 下只尝试一次缩小压缩。自动监听器先记录 `session.surface.replaceGeneration`，只有压缩成功且 generation 增加时才返回 `{ action: 'retry' }`。后端若只返回结果但没有替换表层，不能授权重试。
`maxOverflowRetries` 可选且默认为 `1`；`0` 只禁用溢出恢复，不会禁用压力检查。`auto: false` 不注册任何自动监听器。非规范化错误、尝试耗尽、已经中止的 signal、缺失路由模型、没有安全范围、generation 未变化，以及恢复抛错都会委托给下一个监听器。若没有后续恢复，循环报告原始提供方错误对象与代码。即使恢复工作并发完成，取消或销毁仍具有最终优先级。
默认摘要器依次解析显式配置、最近记录的路由与 agent options。因为直接 `llm/stream` 中间件可以重新路由该辅助调用，`compact/summary.{provider, model}` 记录分发后最终可变的 `GenerateOptions` 目标，而不是 waterfall 之前的候选值。
## 测试
单元测试覆盖最终适配器失败的来源与身份、已关闭 step 的重试编号与重置、取消与销毁、post-step 顺序、已路由信封压力、平衡溢出缩减、generation 证明、上限、委托与辅助调用路由。真实循环测试覆盖抛出式和带内溢出，并验证压缩后的重试请求从替换表层重建。
## 考虑过的替代方案
- **保留临时 pre-step 压力并增加更多参数**——不予采纳，因为后续路由与请求变换仍在更早快照之外，同时通用生命周期会耦合到单个插件。
- **重试相同编号的 step**——不予采纳，因为恢复会在失败边界之后追加持久事件。新 step 保持边界配对与可重建性。
- **只要 `compactIfNeeded` 返回结果就重试**——不予采纳，因为自定义后端可能报告成功却没有改变模型可见状态。`replaceGeneration` 才是权威证明。
- **让 compact-basic 解析提供方措辞**——不予采纳，因为分类属于适配器，而且必须同时覆盖抛出式与带内交付。
- **没有持久路由时回退到 `AgentOptions.model`**——不予采纳，因为自动策略必须描述已完成且已记录的请求。没有请求头的压力检查与恢复会原样委托。
## 后果
Post-step 压力描述已完成的路由请求，包括持久工具结果与仅请求前缀字段。当成功 usage 锚点不存在时，规范化溢出提供兜底路径。恢复有明确上限、以取消为准，并保持单调：只有模型可见的表层 generation 变化后才重试。
代价是成功 step 增加一个串行检查点，并需要适配器持续维护溢出分类。提供方措辞与启发式字符密度仍是维护风险。表层压缩依然无法修复仅信封本身就超出窗口的情况，也不能拆分单个不可分割的超大消息或工具单元。
本 RFC 只取代[压缩能力接缝 RFC](../feature/2026-06-18-compaction-capability-seam.md) 中的 pre-step 自动触发部分。服务拆分、独立 token meter、平衡范围契约、日志记录锁、摘要替换与唯一 `summarize()` 子类 hook 均保持不变。

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# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
# 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
2026-07-15-agent-initiator-scope.md: a9df15beb8744216e020c259934db9fdf8b28b79
2026-07-15-agent-initiator-scope.zh.md: 4198f066ef27042bda0d12fbcaf86f143482d596

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# RFC: Initiating Agent scope over AsyncLocalStorage
Status: implemented
English | [中文](2026-07-15-agent-initiator-scope.zh.md)
## Problem
The harness has two useful but different notions of context. A Cordis `Context` selects services, registration ownership, and lifetime; `agent.ctx` is the flat registration scope owned by one live Agent. Agent and Session identity instead describe the subject of an asynchronous operation. Changing a root `ctx.agent` to mean “whichever Agent is running” would conflate those meanings and fail when one process drives Agents concurrently.
Deep process-local infrastructure sometimes needs a trusted initiating Agent below explicit loop, tool, and request parameters—for example, a host-aware transport, tracing helper, logger, or gateway client. Requiring every private helper to forward `agent` adds repetition, while a process-global mutable slot is incorrect across `await`. Model-visible arguments are unsuitable because a model must not choose a trusted Session or routing header. The carrier belongs to the Agent service rather than optional model-visible context.
## Decision
The mandatory `ctx.agents` service uses Node `AsyncLocalStorage` to carry the initiating Agent. It stores the exact `Agent` directly rather than introducing a one-field frame; a separate private run token records nested boundary lineage only for teardown bookkeeping and carries no identity. The [core-data catalog](../../../core-data-structures/core.md#initiating-agent) identifies the carried type.
`currentInitiator()` reads optionally, `requireInitiator()` throws `no initiating agent is active`, and `withInitiator(agent, operation)` preserves the operation's exact synchronous value or Promise. `withoutInitiator(operation)` establishes a clearing boundary for work that must not inherit an Agent. Session remains derived as `agent.session`; turn, step, tool call, `signal`, model, `cwd`, sandbox, and authorization stay with their existing owners.
`AgentLoop` already injects `ctx.agents` and wraps each concrete driver's complete `runLoop` lifetime in `agents.withInitiator(agent, ...)`. Its package-private loop, turn, step, and tool-call orchestration entries recover the exact Agent from `ctx.agents`, derive `agent.session` once, and let operation-local helpers capture it instead of forwarding the concrete driver or `Session` through shallow interfaces. A leaf helper keeps a narrow `Session` parameter when that is its actual interface rather than accepting a broader `Context` only for an ambient lookup.
Concurrent drivers receive independent stores. A child driver's continuations carry the child, while the caller resumes in its prior store as soon as `withInitiator()` returns; active-run tracking keeps the returned Promise in the teardown drain until it settles. Creation, persistence load, and unpublished `setup(agentCtx)` remain outside the child's driver boundary: creation initiated by a parent runs under the parent identity, while `agentCtx.agent` explicitly identifies the child.
Ambient identity does not replace explicit contracts. `ToolExecution.agent`, `AssembleContext.agent`, `GenerateOptions.sessionId`, task ownership, parent/child requests, `ctx.agent`, `agentCtx.agent`, approval and hook subjects, `cwd` selection, cancellation, worker/process messages, persistence records, and wire identity remain explicit. A remote boundary materializes the identity it needs into its typed request because ALS is process-local.
`AgentRegistry` owns an ordered initiator lifecycle. Teardown first rejects new boundaries; removing `ctx.agents` then drains injected dependents such as AgentLoop, and the registry waits for active returned-Promise boundaries before calling `AsyncLocalStorage.disable()`. If a boundary's inherited async chain starts an owning Cordis fiber's unload, the private run-token lineage releases that nested boundary chain from the drain, which prevents teardown from waiting on itself while unrelated boundaries still drain. `currentInitiator()` and `requireInitiator()` remain usable through a retained in-flight service reference while the ordinary drain runs; after disposal, initiator methods throw `agent initiator scope is disposed`. Root Context disposal may start sibling fiber teardown concurrently, so active-boundary counting remains necessary in addition to Cordis dependency ordering.
Initiator scope does not own detached work: registry drain tracks only the Promise returned by `withInitiator()` or `withoutInitiator()`. Asynchronous resources created inside a boundary inherit its store until they settle or ALS is disabled, so their owning seam must stop unreturned work explicitly. Agent-owned foreground work returns its lifetime and keeps its cancellation contract. Unrelated timers, queues, and deployment infrastructure start under `withoutInitiator(operation)`; queue, worker, process, and wire boundaries serialize identity rather than expecting ALS propagation.
A host-aware transport may derive a deployment-owned header such as `X-Harness-Session-Id` from `ctx.agents.requireInitiator().session.id`; the header is absent from model-visible schema and arguments. No production MCP or Web transport adopts such a header in this decision. A test-double transport proves the trusted boundary without assigning host routing policy to an existing provider-neutral seam.
This decision extends the [Agent registration-scope contract](2026-07-08-agent-scope-contexts.md) and its [runtime design](2026-07-12-agent-scope-runtime-design.md); it does not change their static `agent.ctx` meaning.
## Verification
Agent service tests pin optional and required reads, exact synchronous and cross-realm Promise identity, intrinsic Promise settlement observation, overlapping, nested, and cleared boundaries, restoration after throws or rejection, ordinary and reentrant drain ordering, and retained-reference errors. AgentLoop integration pins concurrent and nested drivers, agentless calls, AgentRegistry restart, root teardown, and package-private loop and tool scheduling through the ambient lookup. Composition, module-graph, build, and runtime-closure checks keep `ctx.agents` wired through the default bundle, SDK spine, Python runtime closure, and direct AgentLoop harnesses without another provider.
A test-double host-aware transport derives `X-Harness-Session-Id` internally and verifies that tool schema and logged arguments contain no identity field. The service deliberately does not drain async work omitted from the Promise returned by the boundary operation; that work remains subject to its owner's explicit stop contract.
## Alternatives considered
**Pass Agent through every function.** Public, worker, process, persistence, and wire boundaries continue to do this, but requiring every process-local private helper to carry Agent adds repetitive forwarding without improving trust. ALS is confined to the asynchronous chain inside those explicit boundaries.
**Make `ctx.agent` dynamic.** `ctx.agent` already means the static Agent associated with an Agent-scoped Cordis context. Changing the root meaning would mix registration and execution scopes and make concurrent behavior surprising.
**Add a separate `ctx.agentExecution` service.** The carrier has no independent backend, configuration, or identity type: it stores the same `Agent` that `ctx.agents` already owns, and AgentLoop already depends on that service. A second mandatory provider would add package, composition, lifecycle, generated-catalog, and test-harness wiring without separating a real capability.
**Store a named or complete runtime frame.** A one-field `{ agent }` frame only wraps the value, while Agent, Session, inbox, cancellation, turn, step, tool execution, and persistence already have authoritative owners. Adding more fields would create stale snapshots and another lifecycle; carrying `Agent` directly keeps the boundary named by its methods without duplicating state.
**Include a step `AbortSignal`, `cwd`, sandbox, or authorization.** Their lifetimes and authority do not match the driver boundary, and their existing seams already pass them explicitly. Adding a control capability requires a separate decision and nested lifecycle contract.
**Use a process-global `currentAgent`.** Concurrent Agents and subagents overwrite one another across awaited continuations, so a mutable global is correct only under a serialization guarantee the harness does not make.
**Derive identity from model-visible arguments.** Model or user input cannot be trusted to select Session, tenant, or sandbox routing.
**Add routing identity to every capability seam.** That spreads hosting concerns through provider-neutral APIs. A host-aware implementation owns its transport header while public boundaries remain explicit.
## Consequences
Deep infrastructure gains one trusted process-local initiating Agent without widening existing tool and capability requests. Concurrent and nested drivers isolate automatically, AgentLoop gains no additional mandatory service, and HMR/root disposal reaches quiescence before ALS is disabled.
The dependency is implicit in function signatures and carries a capability-bearing Agent object. Consumers must restrict it to cross-cutting infrastructure, treat ambient presence as neither liveness nor authorization, and retain explicit cancellation and ownership checks. ALS also has an always-on propagation cost and does not cross worker, process, HTTP, or durable queue boundaries.
The teardown design deliberately accepts Node's [Stability 1 (Experimental)](https://nodejs.org/api/async_context.html#asynclocalstoragedisable) `AsyncLocalStorage.disable()` dependency. Node requires `disable()` before an ALS instance can be garbage-collected, which matters when HMR replaces AgentRegistry-owned instances; the service state guard prevents a later boundary from re-entering the instance after disposal.
The scope deliberately carries only the Agent, omitting turn, step, `signal`, `cwd`, sandbox, and authorization. A real consumer that cannot use existing explicit fields must justify any refinement separately; a stale copied field may at most mislabel telemetry, never grant control.

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# RFC: 基于 AsyncLocalStorage 的发起 Agent 作用域
Status: implemented
[English](2026-07-15-agent-initiator-scope.md) | 中文
## 问题
Harness 中存在两种有用但不同的上下文概念。Cordis `Context` 负责选择服务、注册归属和生命周期；`agent.ctx` 是一个存活 Agent 所拥有的扁平注册作用域。Agent 与会话身份描述的则是异步操作主体。若把根 `ctx.agent` 改成「当前正在运行的 Agent」，就会混淆这两种含义，并在单进程并发驱动多个 Agent 时失效。
进程内深层基础设施有时需要在显式传递的循环、工具及请求参数之下获取可信的发起 Agent，例如宿主感知传输层、追踪辅助函数、日志器或网关客户端。要求每个私有辅助函数都转发 `agent` 会造成重复，而进程级可变槽会在跨 `await` 时发生并发错误。模型可见参数也不适用，因为模型不得选择可信的会话或路由请求头。该载体归 Agent 服务所有，而非模型可见的可选上下文。
## 决策
必需的 `ctx.agents` 服务使用 Node `AsyncLocalStorage` 携带发起 Agent。它直接存储同一个 `Agent`，不引入只有一个字段的帧；另一个私有运行标记只记录嵌套边界的谱系，供 teardown 记账使用，不携带身份。[核心数据目录](../../../core-data-structures/core.md#initiating-agent)标明了所携带的类型。
`currentInitiator()` 用于可选读取，`requireInitiator()` 抛出 `no initiating agent is active`，`withInitiator(agent, operation)` 保留操作返回的同步值或 Promise 本身。`withoutInitiator(operation)` 会建立清空边界，供不得继承 Agent 的工作使用。会话仍通过 `agent.session` 推导；轮次、步骤、工具调用、`signal`、模型、`cwd`、沙箱和授权继续由现有归属方管理。
`AgentLoop` 已经注入 `ctx.agents`，并用 `agents.withInitiator(agent, ...)` 包裹每个具体驱动的完整 `runLoop` 生命周期。循环、轮次、步骤和工具调用的包内私有入口从 `ctx.agents` 恢复同一个 Agent，一次推导 `agent.session`，再由操作内辅助函数捕获该值，避免在浅层接口中转发具体驱动或 `Session`。若 `Session` 本身就是底层辅助函数的实际接口，该函数会保留狭窄的 `Session` 参数，而不会只为隐式查找而接收更宽泛的 `Context`。
因此，并发驱动使用彼此独立的存储。子驱动的异步延续携带子 Agent；`withInitiator()` 返回后，调用方立即恢复之前的存储，而活动运行计数仍持续跟踪返回的 Promise，直到其结束。创建、持久化加载和尚未发布的 `setup(agentCtx)` 位于子驱动边界之外：由父 Agent 发起的创建使用父身份，而 `agentCtx.agent` 显式标识子 Agent。
隐式身份不会取代显式契约。`ToolExecution.agent`、`AssembleContext.agent`、`GenerateOptions.sessionId`、任务归属、父子请求、`ctx.agent`、`agentCtx.agent`、审批与 hook 主体、`cwd` 选择、取消、worker 和进程消息、持久化记录及协议身份都保持显式传递。远程边界会把所需身份写入类型化请求，因为 ALS 只在进程内有效。
`AgentRegistry` 管理一个有序的发起方生命周期。teardown 会先拒绝新边界；移除 `ctx.agents` 后，AgentLoop 等注入方开始排空，注册表随后等待活动的返回 Promise 边界，最后调用 `AsyncLocalStorage.disable()`。如果某个边界继承的异步调用链启动所属 Cordis fiber 的卸载，私有运行标记谱系会从排空范围中释放该嵌套边界链，从而避免 teardown 等待自身完成，同时继续排空无关边界。在普通排空期间，进行中代码可通过保留的服务引用继续调用 `currentInitiator()` 和 `requireInitiator()`；dispose 后，发起方方法会抛出 `agent initiator scope is disposed`。根 Context dispose 可能并发启动同级 fiber 的 teardown，因此除 Cordis 依赖顺序外仍必须统计活动边界。
发起方作用域不负责管理脱离返回链的工作：注册表排空只跟踪 `withInitiator()` 或 `withoutInitiator()` 返回的 Promise。边界内创建的异步资源会继承其存储，直到自身结束或 ALS 被禁用；所属 seam 必须显式停止未纳入返回 Promise 的工作。Agent 所有前台工作会把完整生命周期纳入返回值，并保留显式取消契约。无关的定时器、队列和部署基础设施在 `withoutInitiator(operation)` 下启动；队列、worker、进程和协议边界必须序列化身份，不能期待 ALS 传播。
宿主感知的传输层可以从 `ctx.agents.requireInitiator().session.id` 推导由部署方拥有的 `X-Harness-Session-Id` 等请求头；模型可见 schema 和参数中不包含该请求头。本决策不让现有生产 MCP 或 Web 传输层采用此请求头。测试替身传输层用于证明可信边界，而不会把宿主路由策略分配给现有的提供方无关 seam。
本决策扩展 [Agent 注册作用域契约](2026-07-08-agent-scope-contexts.md)及其[运行时设计](2026-07-12-agent-scope-runtime-design.md)，不会改变其中 `agent.ctx` 的静态含义。
## 验证
Agent 服务测试锁定可选与必需读取、同步值和跨 realm Promise 的引用身份、内建 Promise 结束状态观察、并发、嵌套及清空边界、同步抛错或 Promise 拒绝后的恢复、普通与重入排空顺序及保留引用的错误。AgentLoop 集成测试锁定并发与嵌套驱动、无 Agent 调用、AgentRegistry 重启、根 Context 销毁，以及包内私有的循环和工具调度通过隐式查找完成。组合、模块图、构建及运行时闭包检查确保默认组合包、SDK 主干、Python 运行时闭包及直接 AgentLoop harness 通过 `ctx.agents` 完成接线，无需其他提供方。
测试替身形式的宿主感知传输层在内部推导 `X-Harness-Session-Id`，并验证工具 schema 与记录参数都不包含身份字段。服务有意不排空边界操作所返回 Promise 之外的异步工作；这类工作仍由所属方的显式停止契约管理。
## 考虑过的替代方案
**在每个函数中传递 Agent。** 公开、worker、进程、持久化和协议边界继续显式传递，但要求每个进程内私有辅助函数都携带 Agent 只会造成重复转发，不会提高可信度。ALS 仅限于这些显式边界内部的异步调用链。
**让 `ctx.agent` 变成动态值。** `ctx.agent` 已经表示与 Agent 作用域 Cordis 上下文静态关联的 Agent。改变根上下文的含义会混合注册作用域与执行作用域，并让并发行为变得意外。
**新增独立的 `ctx.agentExecution` 服务。** 该载体没有独立后端、配置或身份类型：它存储的是 `ctx.agents` 已经管理的同一个 `Agent`，而 AgentLoop 本就依赖该服务。第二个必需提供方会增加包、组合、生命周期、生成目录及测试 harness 接线，却没有拆出真实能力。
**保存命名帧或完整运行时帧。** 只有一个字段的 `{ agent }` 帧只是包装该值，而 Agent、会话、inbox、取消、轮次、步骤、工具执行和持久化已经有各自的真源。增加更多字段会产生陈旧快照和另一套生命周期；直接携带 `Agent`，由方法名标识边界，无需重复保存状态。
**包含步骤级 `AbortSignal`、`cwd`、沙箱或授权。** 它们的生命周期及权限范围与驱动边界不一致，而且现有 seam 已经显式传递这些值。新增控制能力需要独立决策和嵌套生命周期契约。
**使用进程级 `currentAgent`。** 并发 Agent 和 subagent 会在异步延续执行之间相互覆盖，因此可变全局值只在 Harness 不具备的串行保证下才正确。
**从模型可见参数推导身份。** 不能信任模型或用户输入来选择会话、租户或沙箱路由。
**给每个能力 seam 增加路由身份。** 这会把宿主关注点扩散到提供方无关 API。宿主感知实现拥有其传输请求头，而公开边界继续显式传递身份。
## 后果
深层基础设施可以获得一个可信的进程内发起 Agent，而无需加宽现有工具和能力请求。并发及嵌套驱动会自动隔离，AgentLoop 不增加新的必需服务，HMR 或根 Context dispose 会在禁用 ALS 前完成排空。
该依赖不会出现在函数签名中，并且携带一个具有控制能力的 Agent 对象。消费方必须将其限制在横切基础设施中，把隐式存在视为既不证明存活、也不授予权限，并保留显式取消和归属检查。ALS 还有常驻传播成本，也无法跨越 worker、进程、HTTP 或持久化队列边界。
该销毁设计有意依赖 Node 的 [Stability 1（实验性）](https://nodejs.org/api/async_context.html#asynclocalstoragedisable) API `AsyncLocalStorage.disable()`。Node 要求在 ALS 实例可被垃圾回收前调用 `disable()`，这对 HMR 替换 AgentRegistry 所拥有的实例尤为重要；服务状态守卫会阻止 dispose 后通过后续边界重新进入该实例。
该作用域有意只携带 Agent，省略轮次、步骤、`signal`、`cwd`、沙箱和授权。若真实消费方无法使用现有显式字段，必须另行论证扩展；陈旧字段最多只能误标遥测数据，绝不能授予控制权。

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# 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
2026-07-15-replay-token-meter-service.md: 34df0383d1b8ae8047c4283eef3800de772c3cae
2026-07-15-replay-token-meter-service.zh.md: 51f319f3c473fe247791e69133eef4280b768002
2026-07-15-replay-token-meter-service.md: a86696a1077c9fa21d9984280009f9a0df0b4bbb
2026-07-15-replay-token-meter-service.zh.md: a6803fc9921a832b7614a7dc26b545a9145a08df

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### Compact-basic consumes, but does not own, measurement
`dsh-compact-basic` requires `ctx.tokenMeter`; `CompactService` gains no token methods or types. The backend is factored into configuration, automatic triggering, region transaction, and summarizer modules, while `summarize()` remains its sole subclass hook. The singleton service consistently prices pressure, retention, shadowed content, provenance, and non-shrinking-summary rejection.
`dsh-compact-basic` requires `ctx.tokenMeter`; `CompactService` gains no token methods or types. Configuration, the region transaction, and summarization stay in separate modules; the service registers automatic listeners itself, while `summarize()` remains its sole subclass hook. The singleton meter consistently prices pressure, retention, shadowed content, provenance, and non-shrinking-summary rejection.
Automatic compaction uses one unified measurement for each threshold-and-retention decision. The region transaction measures after appending its durable `compact/start` lock and again after asynchronous summarization; any intervening durable append changes `logRevision` and prevents replacement.
Compact policy has service-wide defaults: threshold ratio `0.8`, retained tail `floor(contextWindow × 0.16)`, empty summarization provider/model, maximum summary output `8192`, one extra compaction attempt, and automatic triggering enabled. Top-level `thresholdRatio` and `retainTokens` override the pressure policy; retention must remain below the resulting threshold. `summarizationProvider` and `summarizationModel` must both be set or both be empty; an empty pair resolves the latest logged request target, then the `AgentOptions` pair.
Compact policy has service-wide defaults: threshold ratio `0.8`, retained tail `floor(contextWindow × 0.16)`, `summarizationProvider: ''`, `summarizationModel: ''`, `maxTokens: 8192`, `compactionRetries: 1`, `maxOverflowRetries: 1`, and `auto: true`. Top-level `thresholdRatio` and `retainTokens` override the pressure policy; retention must remain below the resulting threshold. The summarization provider and model must both be set or both be empty; an empty pair resolves the latest logged request target, then the `AgentOptions` pair.
The pre-step trigger measures a provisional envelope: the current prompt and prefix override logged values, while the latest logged header supplies provider, model, tools, and other call config. A router-only agent without a complete provider/model pair skips that provisional check because `agent/request` can route later; any routed target can use the singleton estimator.
Automatic pressure runs at `agent/post-step` and measures the canonical durable envelope produced under the provider/model actually selected by `agent/request`. A headerless session has no completed routed request to assess and produces no work; any routed target can use the singleton estimator. Canonical overflow recovery uses the same measurement for forced range selection and retries only after a proven surface replacement.
## Testing
Unit coverage pins service configuration, fixed estimation, envelope invalidation, latest-anchor replacement across provider/model switches, usage and missing-usage paths, seeded append/replace replay, signed deltas, provenance modes, malformed boundaries, unified snapshot detachment and deep immutability, surface-total equality, listener ordering, reload, compact defaults, routing fallback, one-call automatic decisions, retention, convergence, and log-revision rollback. A real Loader/Include YAML fixture loads the exact zero-config token-meter and compact-basic package names in dependency order.
Unit tests cover fixed estimation, envelope invalidation and anchor replacement, replay boundaries, immutable snapshots, routed pressure, convergence, overflow generation proof, and rollback. A real Loader/Include fixture verifies the zero-config token-meter and compact-basic load path in dependency order.
## Alternatives considered
@@ -57,4 +57,4 @@ Unit coverage pins service configuration, fixed estimation, envelope invalidatio
- Fixed heuristic pricing remains an estimate of provider behavior and is not an exact tokenizer or request serializer.
- Every measurement clones the current positional surface and therefore costs O(surface), including pressure checks that finish below threshold.
- Measurements fail loudly on malformed durable boundaries. This turns corrupted replay into a named integration failure instead of silently drifting pressure.
- The pre-step compact integration can skip a router-only first check and can miss tool or routing changes applied later in request middleware.
- Post-step pressure reads the exact logged routing/tools/prefix boundary; provider overflow classification remains the adapter-maintained backstop for requests rejected before a successful usage anchor.

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### compact-basic 消费计量，但不拥有计量
`dsh-compact-basic` 要求 `ctx.tokenMeter`；`CompactService` 不增加 token 方法或类型。后端拆分为配置、自动触发、区域事务与摘要器模块，而 `summarize()` 仍是唯一的子类 hook。单例服务一致用于压力、保留、被遮蔽内容、来源以及非缩小摘要拒绝的定价。
`dsh-compact-basic` 要求 `ctx.tokenMeter`；`CompactService` 不增加 token 方法或类型。配置、区域事务与摘要器分别保留在独立模块中，服务自身注册自动监听器，而 `summarize()` 仍是唯一的子类 hook。单例计量器一致用于压力、保留、被遮蔽内容、来源以及非缩小摘要拒绝的定价。
自动压缩的每次阈值与保留联合决策只使用一次统一计量。区域事务先追加持久 `compact/start` 锁，再执行一次计量，并在异步摘要完成后再次计量；期间任何持久追加都会改变 `logRevision`，从而阻止替换。
压缩策略采用服务级默认值：阈值比例 `0.8`、保留尾部 `floor(contextWindow × 0.16)`、空的摘要提供方/模型、摘要最大输出 `8192`、一次额外压缩尝试，以及启用自动触发。顶层 `thresholdRatio` 与 `retainTokens` 覆盖压力策略；保留值必须小于最终阈值。`summarizationProvider` 与 `summarizationModel` 必须同时设置或同时为空；空组合先解析最近记录的请求目标，再使用 `AgentOptions` 中的组合。
压缩策略采用服务级默认值：阈值比例 `0.8`、保留尾部 `floor(contextWindow × 0.16)`、`summarizationProvider: ''`、`summarizationModel: ''`、`maxTokens: 8192`、`compactionRetries: 1`、`maxOverflowRetries: 1` 与 `auto: true`。顶层 `thresholdRatio` 与 `retainTokens` 覆盖压力策略；保留值必须小于最终阈值。摘要提供方与模型必须同时设置或同时为空；空组合先解析最近记录的请求目标，再使用 `AgentOptions` 中的组合。
pre-step 触发器计量临时请求信封：当前提示词与前缀覆盖日志值，最近记录的请求头给出提供方、模型、工具及其他调用配置。没有完整提供方/模型组合的纯路由 agent（智能体）会跳过该临时检查，因为 `agent/request` 仍可稍后路由；任意已路由目标都可使用这个单例估算器。
自动压力检查运行在 `agent/post-step`，并计量 `agent/request` 实际所选提供方/模型产生的规范持久信封。没有请求头的会话尚无已完成的路由请求可供判断，因此不执行工作；任意路由目标都可使用这个单例估算器。规范化溢出恢复使用同一计量结果强制选择范围，并且只有在表层替换得到证明后才重试。
## 测试
单元覆盖固定服务配置、固定估算、信封失效、提供方/模型切换时替换最新锚点、有无 usage 的路径、种子追加/替换回放、有符号增量、来源模式、畸形边界、统一快照的分离性与深度不可变性、表层总量相等性、监听器顺序、重载、压缩默认值、路由回退、自动决策单次调用、保留、收敛与日志修订回滚。真实 Loader/Include YAML fixture 按依赖顺序加载精确的零配置 token-meter 与 compact-basic 包名称。
单元测试覆盖固定估算、信封失效与锚点替换、回放边界、不可变快照、已路由压力、收敛、溢出 generation 证明与回滚。真实 Loader/Include fixture 验证零配置 token-meter 与 compact-basic 按依赖顺序加载的路径。
## 考虑过的替代方案
@@ -57,4 +57,4 @@ pre-step 触发器计量临时请求信封：当前提示词与前缀覆盖日
- 固定启发式定价仍然只是提供方行为的估计，并不是精确分词器或请求序列化器。
- 每次计量都会复制当前的位置表层，因此成本为 O(surface)，低于阈值即可结束的压力检查也不例外。
- 遇到畸形持久边界时，计量会明确失败。这会把损坏的回放转化为具名集成错误，而不是让压力静默漂移。
- pre-step 压缩集成可能跳过纯路由的首次检查，也可能错过请求中间件稍后应用的工具或路由变化。
- post-step 压力检查读取精确记录的路由、工具与前缀边界；对于在成功 usage 锚点出现前就被拒绝的请求，提供方溢出分类仍是由适配器维护的兜底路径。

42
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@@ -17,7 +17,7 @@ Two forces shape the design. First, compaction policy and reusable token measure
Per the [capability-seams RFC](../../implemented/architecture/2026-06-13-capability-seams.md), compaction ships as separate packages so the contract, the algorithm, and (later) the consumer surface evolve independently:
1. **Interface** — `@deepseek-ai/dsh-compact`: an abstract `CompactService` owning the `ctx.compact` key, the `CompactionResult` vocabulary, and the `compact/*` session events. It declares `compactIfNeeded()` and `compactRegion()` as **abstract** — the contract states *what* compaction does, not *how*.
2. **Implementation** — `@deepseek-ai/dsh-compact-basic`: a concrete `BasicCompactService` that consumes `ctx.tokenMeter` and owns the tail→head retention walk, summarization via `ctx.llm.stream()`, the surface replacement, the lock, and the `agent/pre-step` auto-compaction listener. `summarize()` is its sole subclass hook; pricing and replay stay with the meter.
2. **Implementation** — `@deepseek-ai/dsh-compact-basic`: a concrete `BasicCompactService` that consumes `ctx.tokenMeter` and owns the tail→head retention walk, summarization via `ctx.llm.stream()`, the surface replacement, the lock, post-step pressure, and canonical context-overflow recovery. `summarize()` is its sole subclass hook; pricing and replay stay with the meter.
3. **Consumer** — deferred. A `/compact` tool and slash command will `inject: ['compact']` and call the contract; they are intentionally out of scope here so the seam settles first.
### The contract depends on `dsh-session` and `dsh-llm` — a deliberate deviation
@@ -30,27 +30,27 @@ This is not a coupling smell — it is the contract's domain. The "only cordis"
An earlier draft put the full algorithm (the retention walk, token-summing, text extraction) as concrete methods on the interface. That recouples the contract to one strategy: a backend that wants a different retention policy or event sequence would have to fight inherited concrete code. Making both core methods abstract puts every *how* decision in the backend and keeps the interface a statement of *what*. Token measurement is not a compaction hook at all; the singleton service lets multiple consumers share one per-session replay fold.
`compactIfNeeded(agent, fullSystemPrompt, sessionPrefix, signal)` takes required pressure inputs and cancellation. `compactRegion(start, end, agent, signal?)` uses `agent.session` as its single session identity and keeps an optional signal for manual callers. The pre-step integration resolves a provisional provider/model pair from the latest logged request header, then `AgentOptions`; a model-less router-only first step skips pressure because `agent/request` can route later. The default summarizer resolves its target from explicit config, the latest logged routed target, then agent options.
`compactIfNeeded(agent, trigger, signal)` takes an explicit `'pressure' | 'context-overflow'` trigger and cancellation. It reads only the latest durable routed request; no header means no work, while any routed provider/model target uses the singleton estimator. `compactRegion(start, end, agent, signal?)` uses `agent.session` as its single session identity and keeps an optional signal for manual callers. The default summarizer resolves its target from explicit config, the latest logged routed target, then agent options, and records the provider/model pair after any `llm/stream` routing.
### Auto-compaction runs on `agent/pre-step`, a dedicated surface-mutation seam
### Automatic pressure runs after successful durable step work
Compaction mutates the session surface, so it runs before the step opens and before messages are derived. `agent/request` remains a call-config transform and never needs to rebuild history after a surface change.
Successful-call pressure cannot run at pre-step because final `agent/request` routing, provider output, tool results, buffered context, and steering do not exist there. Serial `agent/post-step(agent, turn, step, signal)` fires after those facts are durable and before `step/end`. `dsh-compact-basic` measures the canonical logged request through `ctx.tokenMeter`, so the next request sees any replacement without a speculative envelope override.
The fix is a dedicated loop seam, **`agent/pre-step`** (`@mode serial`), fired by the loop *after* system assembly and *before* the step opens (`step/start`):
Canonical provider context overflow takes a separate path. The failed step closes, `agent/request-error` receives the original request error and consecutive retry count, and compact-basic forces one useful balanced reduction. It returns retry only if `session.surface.replaceGeneration` increases; the loop then opens a new numbered step and reconstructs its request from the durable log. No range, no replacement, recovery failure, cancellation, an exhausted cap, or an unrelated error preserves the original provider failure. The complete lifecycle decision is in the [after-call recovery RFC](../../implemented/architecture/2026-07-10-after-call-compaction-pressure-and-overflow-recovery.md).
```
assembly = ctx.systemPrompt.assemble()
await ctx.serial('agent/pre-step', agent, turn, step, system, prefix, signal) ⟵ compaction mutates the surface here
session('step/start') ⟵ the step opens AFTER the seam
messages = session.deriveMessages() ⟵ single derive, reflects the compaction
request = waterfall agent/request ⟵ pure request transform (hooks, model switch)
```
assistant/message → tool/result/context/steering
await serial agent/post-step ⟵ pressure compaction inside the successful step
step/end
The loop derives messages once after `agent/pre-step`. Running before `step/start` keeps compaction records outside any half-open step, simplifying crash repair. The seam is awaited and serial so surface mutations cannot interleave; listeners return `void` and do not use Cordis bail values as vetoes.
provider overflow → step/end
await waterfall agent/request-error ⟵ forced compaction between attempts
retry → next numbered step/start ⟵ derives from the replacement surface
```
### Retention is turn-agnostic; tool-pairing balance is the only structural guard
Auto-compaction fires before **every** step, not once per turn. This is **load-bearing for runaway-turn survival**: a tool-heavy ReAct turn appends an `assistant/message` + a `tool/result` per step, so the surface grows *within* a turn. A single turn can grow past the window on its own (a "runaway turn") — and the only moment to rescue it before the next model call overflows is the next step's `pre-step` checkpoint. Gating compaction to a turn's first step (or, worse, retaining the whole in-flight turn verbatim) re-opens exactly the hole compaction exists to close: the harness would die when compaction is most needed.
Auto-compaction checks after **every successful** step, not once per turn. This is load-bearing for runaway-turn survival: a tool-heavy ReAct turn appends an `assistant/message` + a `tool/result` per step, so the surface grows within a turn. The post-step check can compact early closed tool pairs before continuation opens the next step, and provider-confirmed overflow remains the backstop when a request crosses the limit first.
`compactIfNeeded` retains the smallest tail of whole surface units whose estimated size reaches `retainTokens` and compacts older nodes. A unit is a complete closed step or one no-step message. If the token cutoff lands inside a step, retention expands until the cut is tool-pairing balanced. Balance is checked on surface order, not log sequence, because replacement summaries have new sequence numbers at old surface positions. `dsh-compact` exports the before/after edge helpers; their per-session cache folds only appended surface-tail nodes while `replaceGeneration` is unchanged, does no event reads for log-only growth, and rebuilds current membership and balances after replacement. `compactRegion` rejects boundaries that split a tool call from its result. The in-flight turn receives no special retention.
@@ -64,7 +64,7 @@ Auto-compaction always starts at the surface head, merging the prior checkpoint
### Approximate convergence invariant
`resolveConfig` supplies usable defaults: threshold ratio `0.8`, retained tail `floor(contextWindow × 0.16)`, empty summarization-model override, `maxTokens: 8192`, `compactionRetries: 1`, and `auto: true`. Optional top-level `thresholdRatio` and `retainTokens` override the policy for the token meter's single context window; retention must remain below the resulting threshold. Convergence remains dynamic because provider output caps can be spent on hidden or surfaced reasoning tokens and summary size is unpredictable. If the compacted surface remains over threshold, `compactIfNeeded()` re-compacts the head checkpoint up to the configured retry count, but each committed summary must be smaller than what it shadows.
`resolveConfig` supplies usable defaults: threshold ratio `0.8`, retained tail `floor(contextWindow × 0.16)`, empty summarization provider/model overrides, `maxTokens: 8192`, `compactionRetries: 1`, `maxOverflowRetries: 1`, and `auto: true`. Optional top-level `thresholdRatio` and `retainTokens` override the policy for the token meter's single context window; retention must remain below the resulting threshold. Convergence remains dynamic because provider output caps can be spent on hidden or surfaced reasoning tokens and summary size is unpredictable. If pressure remains over threshold, `compactIfNeeded()` re-compacts the head checkpoint up to the configured retry count, but each committed summary must be smaller than what it shadows. Overflow bypasses threshold and retained-tail policy for one maximal balanced head reduction, leaving the newest indivisible unit.
### Surface replacement: `compact/*` events are log-only; one `user/message` carries the summary
@@ -90,12 +90,12 @@ The basic backend wraps the summary as established checkpoint context and tags i
The `compact/start … compact/end` bracket is justified, in order of what now does the work:
1. **Crash-detectable orphan + provenance** (primary). Summarization is a slow model call persisted *after* `compact/start`. A crash mid-summarization leaves a `compact/start` with no matching `compact/end` — a detectable orphan. Releasing the lock last (rather than first) converts the crash window from *silent corruption* into that detectable orphan.
2. **Prevents concurrent compaction.** `compactRegion` refuses to start if the current turn holds an unmatched `compact/start`. (The loop is single-threaded across the awaited `pre-step`, so this is also a re-entry tripwire — a thrown "already in progress" signals a real bug.)
2. **Prevents concurrent compaction.** `compactRegion` refuses to start if the current turn holds an unmatched `compact/start`. (The loop is single-threaded across either awaited automatic seam, so this is also a re-entry tripwire — a thrown "already in progress" signals a real bug.)
Two failure paths, both documented:
- **Crash** (the loop dies mid-summarization): a dangling `compact/start`, no closer. Because `compact/*` are **log-only**, the orphan is **inert** — the surface replacement never landed, so the full, uncompacted history derives correctly. Generic turn-repair (`interruptedTurnClosers`) closes the turn with a synthetic `turn/end`; the orphan sits *before* that `turn/end`, so the turn-scoped in-progress check never sees it and a crash can't wedge future compaction. Compaction simply re-attempts at the next `pre-step`.
- **Recoverable** (summarization throws but the loop survives): the backend appends `compact/end` with its **`error`** field set, leaving the surface untouched, and the model call proceeds with full history.
- **Crash** (the loop dies mid-summarization): a dangling `compact/start`, no closer. Because `compact/*` are **log-only**, the orphan is **inert** — the surface replacement never landed, so the full, uncompacted history derives correctly. Generic turn-repair (`interruptedTurnClosers`) closes the turn with a synthetic `turn/end`; the orphan sits *before* that `turn/end`, so the turn-scoped in-progress check never sees it and a crash cannot wedge future compaction.
- **Recoverable** (summarization throws but the loop survives): the backend appends `compact/end` with its **`error`** field set and leaves the surface untouched. Post-step pressure warns and continues; overflow recovery delegates so the original provider error remains authoritative.
`compact/end` keeps its `error?` field (mirroring `tool/result`'s self-contained error — one event tells success from failure without correlating a sibling). There is no separate `compact/error` event.
@@ -104,14 +104,14 @@ Two failure paths, both documented:
## Alternatives considered
- **The full algorithm as concrete interface methods** — rejected because it recouples the contract to one retention strategy. Both core methods are abstract; reusable measurement is a separate LLM-family service and `summarize()` is basic's sole hook.
- **Compaction on the `agent/request` waterfall** — the earlier cut; rejected for the double-derive it forced and for handing the listener context it structurally cannot compact. The dedicated `agent/pre-step` seam makes the layering correct by construction.
- **Compaction on `agent/request` or provisional `agent/pre-step` inputs** — rejected because neither proves the final durable request and both couple generic lifecycle to compaction-specific envelope data. Post-step replay plus canonical overflow recovery covers both successful and rejected calls.
- **A separate `compact/error` event** — rejected: `compact/end` keeps an `error?` field, mirroring `tool/result`'s self-contained error — one event tells success from failure without correlating a sibling.
- **Teaching core turn-repair about `compact/*`** — rejected: the log-only orphan is inert, and a core module patched for every future `xxx/start … xxx/end` plugin pair is exactly the coupling the capability-seam architecture exists to avoid.
## Consequences
- **Packages**: `packages/compact/compact` supplies the interface and `compact-basic` supplies the backend. `packages/llm/token-meter` owns replay-aware measurement independently. The consumer tier is deferred.
- **New loop seam**: `agent/pre-step` (`@mode serial`) declared in `dsh-agent` and emitted by `dsh-agent-loop` after system assembly and before `step/start`. This is a documented change to the loop — `docs/architecture.md` records it and the generated cordis catalog carries its signature.
- **Automatic seams**: `agent/post-step` (`@mode serial`) handles successful-call pressure and `agent/request-error` (`@mode waterfall`) handles final request failures after the failed step closes. Generic `agent/pre-step` remains a four-argument checkpoint with no compaction-only prompt/prefix payload.
- **`SessionEventMap`** gains `compact/start` / `compact/summary` / `compact/end` by declaration merging (merge-extensible); `SurfaceEventType` is **not** touched. These are session events, not cordis `Events`, so the event-taxonomy gate needs no entry.
- **`dsh-compact`** owns `toolPairingBalancedBefore(session, seq)` and `toolPairingBalancedAfter(session, seq)`, the cached surface-edge checks that `compactRegion` and `compactIfNeeded` use to avoid splitting a tool-call/result pair. The cache validates current membership by seq and answers both edges from one per-cut balance sequence; stale or missing seqs and orphan results reject. `dsh-session` continues to own the surface `replace` operation, ordered event sequences, and rewrite generation.
- **`dsh-invariants`** drops its `surface replace: start must be <= end` assertion: a head-anchored compaction lands a high-seq replacement entry at an older range's *position*, so `start > end` numerically is normal and valid (the range is positional, validated by the surface's `indexOf` checks that remain). The turn-enclosure invariant is reused unchanged.
@@ -119,7 +119,7 @@ Two failure paths, both documented:
## Testing
- **Unit:** Real Loader and invariant plugins cover whole-unit retention, convergence failure, both `compact/end` outcomes, head anchoring, open-tail refusal, inert crash orphans, and compacting closed steps inside one oversized open turn.
- **Loop:** Tests pin one awaited `agent/pre-step` per step between `turn/start` and `step/start`; a surface mutation there lands outside the step and appears in the single derived request.
- **Unit:** Real Loader and invariant plugins cover whole-unit retention, convergence failure, both `compact/end` outcomes, head anchoring, open-tail refusal, inert crash orphans, forced below-threshold overflow, generation proof, caps, and original-error preservation.
- **Loop:** Tests pin post-step after durable tool results and before `step/end`, actual `agent/request` routing, closed failed steps, fresh retry numbering, and complete thrown/in-band overflow → compaction → reconstructed retry composition.
- **With-key e2e:** A real model and bash session with lowered limits triggers compaction, records a complete `compact/start…end` pair, shrinks the surface, and finishes the task.
- **Snapshot gap:** Runaway-turn compaction cannot yet replay because the summarization call records no `assistant/chunk` events or `sessionId`; interleaved summarization-call replay remains follow-up work.

12
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@@ -16,26 +16,26 @@ Three properties carry the design:
- **Request-only, header-logged.** `deriveMessages()` never returns the prefix; its one durable record is `EpochHeader.messagePrefix` on the instance's anchoring `request/header` snapshot — the channel the reconstructable-requests RFC already owns for the request's non-history half, so no new session event exists. The dev invariant ([dsh-invariants](../../../../packages/support/invariants/src/index.ts)) recomputes `messagePrefix + boundary derivation` against every loop-built request; an unlogged prefix cannot reach the wire.
- **Frozen per instance.** Reuse is structural, not disciplined: the cached product cannot change mid-session, so the provider's prompt cache holds by construction and the prefix extends the cacheable region at zero marginal cost per step. A process restart or `ctx.agents.resume()` is a new instance: it recomposes, and any drift lands attributably on the `'resume'` header snapshot. This is the routing rule the seam creates: session-frozen openers ride the prefix; content that changes mid-session rides the append-only history channels (`agent.inject()` or tool/prompt-submit `additionalContexts` — [the interception-seams RFC](2026-06-30-interception-seams.md)), each a durable `context/message` paid once and prefix-cached thereafter.
- **Composed before the pressure gate.** Composition precedes the instance's first `agent/pre-step`, and the seam hands the composed value through: `agent/pre-step` carries a `sessionPrefix` parameter and `CompactService.compactIfNeeded(agent, fullSystemPrompt, sessionPrefix, signal)` counts it in its token-pressure estimate — a gate reading the previous instance's folded prefix instead would under-gate a resumed or forked instance whose contributor grew, skipping compaction and shipping an over-window first request. A composition interrupted by a cancel/dispose landing inside the waterfall is discarded, never cached: an abort-aware listener's degraded fallback cannot leak into later requests, and the next turn recomposes under a live signal.
- **Exact in the durable request envelope.** Composition precedes the instance's first `agent/pre-step` and request boundary. The first routed request logs the current prefix on its header, so post-step token pressure reads the exact prefix together with the actual prompt, tools, and routed model; no compaction-only parameter is carried through the generic pre-step seam. A composition interrupted by cancel/dispose is discarded, never cached: an abort-aware listener's degraded fallback cannot leak into later requests, and the next turn recomposes under a live signal.
Because composition runs before the boundary snapshot, a composing listener's session append joins the CURRENT request's derived history. Compaction structurally cannot touch the prefix (or the system prompt): it rewrites surface nodes, and header state never enters the surface.
## Testing
**Unit** — [interception.spec.ts](../../../../packages/core/agent-loop/tests/interception.spec.ts) pins compose-once across turns and steps (one composition and no changed headers), canonical prepend ordering, empty-prefix omission from the header, the frozen seed (in-place push throws), held-reference mutation immunity, and composition-precedes-pre-step with the seam receiving the composed value; [cancel.spec.ts](../../../../packages/core/agent-loop/tests/cancel.spec.ts) pins cancel/dispose landing inside the composition window and the discard-and-recompose stale-cache guard; dsh-session header tests cover canonical prefix snapshots and latest-snapshot folding; dsh-invariants tests pin the `messagePrefix + derivation` equation; dsh-compact-basic tests pin that the pressure estimate counts the handed prefix. **Snapshot** — the acp-snapshot normalizer scrubs header prefixes to count-preserving `{{messagePrefix}}` tokens (unit-covered in dsh-acp-snapshot); header content itself is pinned per [the pinned-header scenario RFC](../testing/2026-07-06-pin-request-header-content-in-one-scenario.md), and the example tree loads no prefix contributor, so live goldens stay prefix-free. **e2e** — none prefix-specific: the seam is provider-independent and deterministic; the with-key cache measurement in [request-cache.e2e.ts](../../../../packages/core/agent-loop/tests/request-cache.e2e.ts) already proves the cacheable-prefix economics the design rests on.
[Interception tests](../../../../packages/core/agent-loop/tests/interception.spec.ts) pin compose-once reuse without changed headers, prepend order, empty-prefix omission, immutability, composition before pre-step, and the prefix on the routed header; [cancellation tests](../../../../packages/core/agent-loop/tests/cancel.spec.ts) pin discard and recomposition. Session, invariant, token-meter, and compaction tests cover header round trips, request reconstruction, and durable prefix-aware pressure accounting. Snapshot normalization preserves prefix counts, while the [pinned-header scenario](../testing/2026-07-06-pin-request-header-content-in-one-scenario.md) owns content and the default example remains prefix-free. The provider-independent seam needs no dedicated e2e; the with-key [request-cache e2e](../../../../packages/core/agent-loop/tests/request-cache.e2e.ts) covers its cache economics.
## Alternatives considered
- **Per-request `before`/`after` slots recomputed every step** (the shape first proposed: a waterfall firing on every request, contributing frozen `before` messages ahead of the history and fresh `after` messages behind it) — rejected. A per-step `before` recompose invites drift that must be logged as a full changed header, and an `after` slot sits behind the growing history, so its tokens re-pay on every request and everything after it is uncacheable. Measured against the alternatives, every current update pattern is served cheaper by a durable append (paid once, cache-read thereafter), and the only content with no home was the session-stable opener — which wants freezing, not recomputation.
- **A system-prompt section** (`system-prompt/assemble`) — rejected for this content: the assembly renders to the single `system` string, so message-shaped openers do not fit, and the system prompt is deliberately re-assembled per step (with a full changed header when it changes) while the opener wants instance-frozen semantics.
- **A durable history opener** (`inject()` at session start) — rejected: permanent history is the failure mode in the problem statement — replayed everywhere, compactable, stale across resumes.
- **Compose per turn instead of per instance** — rejected: a turn-boundary recompose either desyncs silently from the log or forces a full changed header, and it busts the provider cache exactly as often as it fires; the legitimate refresh point is the instance boundary, where the `'resume'` snapshot already records drift attributably.
- **Compose lazily at the first request and let compaction read the folded header** (the shape as first merged) — superseded in review: the fold matches the live prefix only from the instance's second request on, so on a resumed/forked instance's first step the pressure gate read the PREVIOUS instance's prefix and could under-gate. Composing before the first pre-step and handing the live value through the seam makes the estimate exact at every step.
- **A dedicated session event carrying the prefix** — rejected: request headers are the request's non-history record by design; a second event would be a second home for the same fact.
- **Compose per turn instead of per instance** — rejected: a turn-boundary recompose either desyncs silently from the log or forces a changed header, and it busts the provider cache exactly as often as it fires; the legitimate refresh point is the instance boundary, where the `'resume'` snapshot already records drift attributably.
- **Carry prompt/prefix through `agent/pre-step` for provisional pressure** — rejected because it couples a generic lifecycle seam to one consumer and still misses later request routing and tools; post-step replay reads every request-envelope field from its durable routed header.
- **A dedicated session event carrying the prefix** — rejected: the header events are the request's non-history record by design; a second event would be a second home for the same fact and another codec to keep total.
## Consequences
- `agent/pre-step` and `CompactService.compactIfNeeded` carry a `sessionPrefix` parameter: every pre-step listener and compaction backend sees the real per-instance value (all in-repo implementations updated in the same change, per the pre-release stance).
- `agent/pre-step` stays a generic `(agent, turn, step, signal)` checkpoint. Compaction receives no prefix parameter; `ctx.tokenMeter` folds the prefix from the canonical routed header at post-step.
- A contributor whose content changes mid-session is not re-read until the next instance — by design. A deployment needing mid-session catalog updates routes the change notice through the append-only history channels and pays one durable `context/message`.
- The dropped `after` slot leaves no request-only channel near the request tail; nothing in the repo needs one, and adding it back would re-open the every-step re-pay cost the design exists to avoid.
- An empty composition is canonical absence: no-contributor deployments log no extra header bytes and their requests are the bare derivation.

8
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@@ -18,11 +18,11 @@ The vm isolates accidental global pollution, and the context façade hides frame
| Tool | Contract |
|---|---|
| `cordis_inspect` | Read-only report over the live runtime, one Markdown section per `what` value (omit `what` for all sections). Never mutates. |
| `cordis_inspect` | Read-only report over the live runtime, one Markdown section per `what` value (omit `what` for all sections). An exact `name` with `what: "api"` or `what: "events"` narrows to one source-documented target. Never mutates. |
| `cordis_mount` | Evaluates `code` (the body of an async JavaScript function) in a `node:vm` sandbox; the code must `return` a cordis plugin, which is mounted as a child of the `cordis-dynamic` group fiber and tracked under a fresh id (`dyn-1`, `dyn-2`, …). |
| `cordis_unmount` | Disposes one dynamic mount by id and returns only after disposal reaches quiescence — every registration the plugin made is unwound, not merely requested to stop. |
`cordis_inspect` sections: `services` (every provided ctx service and the owning fiber, non-active owners flagged), `plugins` (a flat list of every loaded plugin with its lifecycle state, from `ctx.registry` — what capabilities are loaded, deliberately not the tree shape), `tools` (what the model can call), `dynamic` (the mount table: id, name, state, provided services, awaited services), `api` (live service signatures + the type shapes they reference, from the generated catalog), and `events` (harness events with dispatch mode and signature). The model-facing tool descriptions carry the operational rules the model needs at call time; [the generated tool catalog](../../../tool-catalog.md) is their exhaustive rendering.
`cordis_inspect` sections: `services` (every provided ctx service and the owning fiber, non-active owners flagged), `plugins` (a flat list of every loaded plugin with its lifecycle state, from `ctx.registry` — what capabilities are loaded, deliberately not the tree shape), `tools` (what the model can call), `dynamic` (the mount table: id, name, state, provided services, awaited services), `api` (live service signatures + the type shapes they reference, from the generated catalog), and `events` (harness events with dispatch mode and signature). Broad `api` and `events` reports omit full JSDoc to stay compact; an exact `name` returns one service or event with its original method/declaration JSDoc. A name is invalid with other sections, unknown targets fail, and an API target must be live. The model-facing tool descriptions carry the operational rules the model needs at call time; [the generated tool catalog](../../../tool-catalog.md) is their exhaustive rendering.
### Sandbox semantics
@@ -44,9 +44,9 @@ Mounts relate to each other through ordinary cordis service semantics, with thei
### The generated API catalog
`cordis_inspect` serves API and event data from a generated catalog rather than a duplicated table. The generator reuses the Cordis catalog AST scan and emits service summaries, signatures, event modes, referenced type declarations, and the inherited context surface. Ambiguous type names are omitted and oversized declarations are marked as truncated.
`cordis_inspect` serves API and event data from a generated catalog rather than a duplicated table. The generator reuses the Cordis catalog AST scan and emits service summaries, signatures, original service-method and event JSDoc, event modes, referenced type declarations, and the inherited context surface. Ambiguous type names are omitted and oversized declarations are marked as truncated.
Freshness is gated like every generated artifact: `pnpm run verify-cordis-api` (in `doc-sync`) regenerates in memory and fails on any diff, so a JSDoc edit that changes a public signature cannot ship without regenerating the catalog the model reads. At runtime the inspect tool intersects the catalog with the live runtime rather than dumping it: live catalogued services render summary + signatures, live services without a catalog entry (mount-provided ones) render name + owning fiber, catalogued services with no live provider are listed tersely, and the referenced type shapes follow.
Freshness is gated like every generated artifact: `pnpm run verify-cordis-api` (in `doc-sync`) regenerates in memory and fails on any diff, so a JSDoc or public-signature edit cannot ship without regenerating the catalog the model reads. At runtime the inspect tool intersects the catalog with the live runtime rather than dumping it: broad reports render live catalogued services as summary + signatures, live services without a catalog entry (mount-provided ones) as name + owning fiber, catalogued services with no live provider tersely, and then the referenced type shapes. Exact-name reports render one live service or event with the original JSDoc immediately before each signature; keeping that detail opt-in avoids charging its token cost on exploratory listings.
### Configuration, rendering, and observability

6
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@@ -29,8 +29,8 @@ The rule that settled the remaining cases: ***the type you write, hold, or recei
The durability requirement was specific: the doc shows the **literal** current type declaration and original JSDoc (so a reader sees the real shape and source contract, not a paraphrase) **and** is mechanically guaranteed to match source. The repo already compiles fenced ` ```ts ` blocks (`doc-typecheck`), but a real typechecked block needs import noise and proves only *assignability* — a renamed field or changed JSDoc can pass. So:
- Type declarations and their JSDoc are pasted verbatim into a dedicated ` ```ts type-equiv ` fence. `doc-typecheck` recognizes the fence and skips it (a bare definition is not standalone-compilable), and **excludes it from the opt-out ratio** — it is a separately-checked category, not an unchecked sketch.
- A new `scripts/verify-type-equiv.ts` extracts each block via the TypeScript parser and asserts that its declaration structure and every JSDoc comment match the declared symbol, ignoring only formatting whitespace and non-JSDoc comments. This is chosen over a compiled `_Check` assertion because source names and documentation identity, not assignability, are the properties the catalog preserves.
- Complete type declarations and their JSDoc are pasted verbatim into a dedicated ` ```ts type-equiv ` fence. A concise ` ```ts public-api ` fence carries the source-equivalent ambient projection for a class whose implementation bodies do not belong in the catalog. `doc-typecheck` recognizes both and skips them (the bare declarations are not standalone-compilable), and **excludes them from the opt-out ratio** — they are a separately-checked category, not unchecked sketches.
- A new `scripts/verify-type-equiv.ts` extracts each block via the TypeScript parser and asserts that its declaration structure and every JSDoc comment match the declared symbol, ignoring only formatting whitespace and non-JSDoc comments. Ordinary blocks retain the complete declaration. A `public-api` projection retains a class's public fields, constructor, accessors, and methods with their original JSDoc while removing implementation bodies and private or protected members. This is chosen over a compiled `_Check` assertion because source names and documentation identity, not assignability, are the properties the catalog preserves.
- Provenance lives in a central `scripts/type-equiv.manifest.json` (`{ doc, symbol, source }` entries), **not** in directive comments in the prose. The script enforces a **1:1 correspondence**: every type-equiv block has exactly one manifest entry and vice versa, so a block can never be silently unchecked and an entry can never rot.
- Wired into `doc-sync`, so it runs in the same lefthook pre-push and CI paths as the other doc gates.
@@ -52,7 +52,7 @@ The spine-vs-seam rule was tested against `BashExecRequest`, tool schemas and de
## Consequences
- The vocabulary now has a single home that **cannot silently drift**: a field rename in source fails `verify-type-equiv` in the pre-push hook and CI until the paste is refreshed.
- The vocabulary now has a single home that **cannot silently drift**: a field or public class-member change in source fails `verify-type-equiv` in the pre-push hook and CI until the paste is refreshed. Cordis service methods remain owned by the generated services catalog rather than being duplicated here.
- The spine-vs-seam line is a reusable scoping tool, not a one-off: the same "the thing you write/hold/receive is core; the machinery that types/renders/persists it is a detail" rule is what later scoped the events/services catalog's harness-vs-inherited tiering.
- The `ts type-equiv` fence is a third doc-block category alongside ` ```ts ` (compiled) and ` ```ts ignore-check ` (sketch). A later sibling added a fourth, ` ```ts cordis-catalog ` (generated signature), reusing the same skip-and-exclude treatment.
- Adding or reshaping a core type now carries a documentation obligation the author must honor (the gate cannot detect a missing *new* type), backstopped by the `dsh-code-review` checklist.

6
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@@ -20,7 +20,7 @@ Specific choices:
- **`@mode` tag, cross-checked.** Each harness event's JSDoc carries an explicit `@mode emit|waterfall|parallel|serial` tag; the generator hard-errors on a missing tag. Where the signature shape is conclusive — a trailing `next: () => …` parameter is structurally a waterfall — it asserts the tag agrees and hard-errors on a contradiction. The emit/parallel/serial distinction is not structurally visible (`session/flush` returns `Promise<void> | void` with no `next`, as does the ordered `agent/pre-step` checkpoint), so it is trusted from the tag. The authoring rule lives in [AGENTS.md](../../../../AGENTS.md).
- **Tiered scope.** The harness tier (the 8 `@deepseek-ai/dsh-*` services + their events) is rendered in full from source. The inherited tier (cordis-core `ctx.on/emit/effect/provide/…` + the `internal/*` events + loader/hmr/timer) is pinned vendor source a plugin also sees; it is rendered tersely (name + one-line + source pointer) from a curated table in the generator, NOT walked from the vendor AST — the cordis-core `Context` mixes true ctx members with non-service fields (`root`, `baseUrl`, `logger`), and the vendor surface changes only on a deliberate vendor sync.
- **Cross-links to the data-structure catalog.** A type name in a signature (`GenerateOptions`, `StreamChunk`, `ToolDefinition`, …) links to the core-data-structures page that documents it. The map is a small hand-curated const in the generator — NOT `type-equiv.manifest.json`, which documents the `…Map` symbols while signatures reference the derived union names, and lists a few symbols on two pages.
- **Cross-links to the data-structure catalog.** Every repository-owned type name in a signature (`GenerateOptions`, `StreamChunk`, `ToolDefinition`, …) links to its primary core-data-structures page through a curated map. The AST walk is fail-closed: each parameter, generic constraint/default, and return-type reference must be mapped, be the signature's own type parameter, be a named TypeScript/Cordis foundation type, or carry a named exception with its non-catalog documentation owner. Violations aggregate with source pointers and name the appropriate owning lists. The map does NOT reuse `type-equiv.manifest.json`, which documents `…Map` symbols while signatures reference derived union names and lists some symbols on multiple pages.
- **A dedicated fence.** Signature blocks use a ` ```ts cordis-catalog ` info string and place the original event or public-method JSDoc immediately before its declaration. `doc-typecheck` recognizes and skips the bare fragments, excluding them from the opt-out ratio — the same treatment `type-equiv` blocks get.
This **supersedes the event-taxonomy half** of [doc-sync enforcement](2026-06-11-doc-sync-enforcement.md): `verify-event-taxonomy` and its `docs/architecture.md` table are retired (the architecture.md heading stays, its body now points at the catalog; the Service-map role table stays as curated prose). doc-typecheck, verify-md-wrap, verify-md-links, and verify-type-equiv are unchanged.
@@ -29,11 +29,11 @@ This **supersedes the event-taxonomy half** of [doc-sync enforcement](2026-06-11
- **Verify-don't-generate, as the retired taxonomy check did** — reversed *for this surface only*: the data here is mechanically complete, so generation is strictly stronger (full signatures, cannot drift, catches undocumented events) than a name-set check of a hand-maintained table.
- **Walking the vendor AST for the inherited tier** — rejected for the curated table: the cordis-core `Context` mixes true ctx members with non-service fields, and the pinned vendor surface changes only on a deliberate sync.
- **Reusing `type-equiv.manifest.json` as the signature cross-link map** — rejected for a small hand-curated const: the manifest documents the `…Map` symbols while signatures reference the derived union names, and it lists a few symbols on two pages.
- **Reusing `type-equiv.manifest.json` as the signature cross-link map** — rejected for a complete curated const plus fail-closed coverage: the manifest documents `…Map` symbols while signatures reference derived union names, and it lists some symbols on multiple pages. The explicit map makes each rendered destination and each non-catalog exception a reviewable decision.
## Consequences
- The catalog cannot drift: a source change that the committed file doesn't reflect fails `verify-cordis-catalog` in the pre-push hook and CI. A new event with no `@mode` tag, or a tag that contradicts its signature, fails the generator outright.
- The catalog cannot drift: a source change that the committed file doesn't reflect fails `verify-cordis-catalog` in the pre-push hook and CI. A new event with no `@mode` tag, a tag that contradicts its signature, or an unclassified signature type fails the generator outright.
- Event and service-method contracts have a single home — the JSDoc at the declaration. The catalog repeats that original JSDoc inside its generated signature block and uses its description portion as entry prose, so thin source documentation yields a thin catalog entry.
- The inherited tier is hand-summarized, so a vendor sync that adds/renames a cordis-core event or `ctx` member needs a matching edit to the curated table in `gen-cordis-catalog.ts`. This is the deliberate cost of not walking pinned vendor source; it changes rarely and is called out in the generator.
- `verify-event-taxonomy.ts` is deleted and the `docs/architecture.md` event table is gone; anyone who linked to a specific table row now lands on the generated catalog instead.

4
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@@ -7,7 +7,7 @@ How this repo tests, tier by tier, and the rules that keep a green suite meaning
- **Unit** (`pnpm run test`): vitest over `packages|examples/*/tests/**/*.spec.ts`, colocated with what they test. Every registry gets an HMR-safety test (dispose the contributing fiber, assert cleanup). Prefer edge cases, error paths, event ordering, concurrency races, and permanent contract regressions (see `packages/core/agent-loop/tests/contract-regressions.spec.ts`).
- **Coverage gate** (`pnpm run test:coverage`): the gating run, per-file 100% on `packages/*/*/src`. An uncovered line is often dead code the gate is correctly flagging for deletion, not a missing test to bolt on. Line coverage is necessary, never sufficient — it proves lines ran, not that the feature works as shipped.
- **Real-API e2e** (`pnpm run test:e2e`): with-key tests against live provider APIs — the DeepSeek model plus provider-specific smokes that gate on their own keys (`EXA_API_KEY`, `PERPLEXITY_API_KEY`, …); each suite self-skips without its key so keyless CI stays green ([real-API e2e RFC](rfc/implemented/testing/2026-06-19-real-api-e2e-ci.md)).
- **Snapshot** (`pnpm run test:snapshot`): transport-specific keyless goldens cover external presentation. ACP suites boot the real example subprocess, replay a recorded session, and diff normalized stdout plus the re-persisted log ([ACP snapshot RFC](rfc/implemented/testing/2026-06-19-acp-snapshot-tests.md)). TUI completed journeys replay recorded primary/child JSONL through the real agent loop and tools before projecting ANSI into semantic terminal-state goldens; package-local snapshots retain transient renderer states, and a real PTY conversation covers the process boundary ([TUI snapshot RFC](rfc/implemented/testing/2026-07-18-tui-terminal-state-snapshots.md)). Use `pnpm run test:snapshot:record` when a model transcript must change and `pnpm run test:snapshot:refresh` when committed replay input remains correct; review every JSONL and golden diff. System-prompt/tool-schema content is pinned by ONE ACP scenario (`text-turn`) and tokenized in every other fixture, so a prompt or schema edit churns one committed line ([pinned-header RFC](rfc/implemented/testing/2026-07-06-pin-request-header-content-in-one-scenario.md)).
- **Snapshot** (`pnpm run test:snapshot`): transport-specific keyless goldens cover external presentation. ACP suites boot the real example subprocess, replay a recorded session, and diff normalized JSON-RPC plus the re-persisted log ([ACP snapshot RFC](rfc/implemented/testing/2026-06-19-acp-snapshot-tests.md)); the headless suite independently pins `stream-json` through its real one-shot subprocess. TUI completed journeys replay recorded primary/child JSONL through the real agent loop and tools before projecting ANSI into semantic terminal-state goldens; package-local snapshots retain transient renderer states, and a real PTY conversation covers the process boundary ([TUI snapshot RFC](rfc/implemented/testing/2026-07-18-tui-terminal-state-snapshots.md)). Use `pnpm run test:snapshot:record` when a model transcript must change and `pnpm run test:snapshot:refresh` when committed replay input remains correct; review every JSONL and golden diff. System-prompt/tool-schema content is pinned by one ACP scenario (`text-turn`) and tokenized in every other fixture, so a prompt or schema edit churns one committed line ([pinned-header RFC](rfc/implemented/testing/2026-07-06-pin-request-header-content-in-one-scenario.md)).
## The with-key policy: inference is cheap here
@@ -35,4 +35,4 @@ An e2e assertion re-runs the command or re-reads the file externally; a keyword
## When a snapshot test is required
Any change affecting an editor-facing transcript or end-to-end agent UX adds or updates a scenario in the owning snapshot suite, or states in the PR why none applies. ACP surfaces use `examples/<name>/tests/snapshots/`, a scenario table over the [`dsh-acp-snapshot`](../packages/support/acp-snapshot/README.md) suite factory (`examples/acp-agent` is primary). Completed interactive-terminal journeys use JSONL-driven scenarios under `examples/tui-agent/tests/snapshots/`; transient presentation uses the package-local semantic matrix, with a PTY case when input, Loader selection, or terminal teardown changes. New capability seams, lifecycle shapes, or transcript surfaces name their coverage at every tier at plan time and verify the harness can express it — a harness gap is scheduled work, not a mid-build surprise.
Any change affecting an editor-facing transcript, headless event stream, or end-to-end agent UX adds or updates a scenario in the owning snapshot suite, or states in the PR why none applies. ACP surfaces use `examples/<name>/tests/snapshots/`, a scenario table over the [`dsh-acp-snapshot`](../packages/support/acp-snapshot/README.md) suite factory (`examples/acp-agent` is primary); `examples/headless-agent` owns the `stream-json` snapshot and replay fixtures. Completed interactive-terminal journeys use JSONL-driven scenarios under `examples/tui-agent/tests/snapshots/`; transient presentation uses the package-local semantic matrix, with a PTY case when input, Loader selection, or terminal teardown changes. New capability seams, lifecycle shapes, or transcript surfaces name their coverage at every tier at plan time and verify the harness can express it — a harness gap is scheduled work, not a mid-build surprise.

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@@ -169,7 +169,7 @@ The bash tool is the model-facing consumer of the bash executor seam. A `run_in_
### `cordis_inspect`
Inspect the live cordis runtime that is running THIS agent. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (a flat list of the loaded plugins with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `dynamic` (plugins you mounted via cordis_mount: id, name, state, provided services, awaited services), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Omit `what` to get all six sections.
Inspect the live cordis runtime that is running THIS agent. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (a flat list of the loaded plugins with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `dynamic` (plugins you mounted via cordis_mount: id, name, state, provided services, awaited services), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Omit `what` to get all six sections. With `what:"api"` or `what:"events"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc.
```json
{
@@ -186,6 +186,10 @@ Inspect the live cordis runtime that is running THIS agent. Read-only. Sections:
"api",
"events"
]
},
"name": {
"type": "string",
"description": "Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\"."
}
}
}

10
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@@ -1,6 +1,6 @@
# Examples
Runnable demos (not workspaces) that showcase how the harness is wired. Each example is 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-demo`](../packages/examples/stdio-demo), [`@deepseek-ai/dsh-acp-demo`](../packages/examples/acp-demo)) and the [`@deepseek-ai/dsh-agent-spine-demo`](../packages/examples/agent-spine-demo) bundle they share. There is no `start.ts`; the `demo:*` scripts invoke each app package's `bin`.
Runnable demos (not workspaces) that showcase how the harness is wired. Each example is 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-demo`](../packages/examples/stdio-demo), [`@deepseek-ai/dsh-cli-demo`](../packages/examples/cli-demo), [`@deepseek-ai/dsh-acp-demo`](../packages/examples/acp-demo)) and the [`@deepseek-ai/dsh-agent-spine-demo`](../packages/examples/agent-spine-demo) bundle they share. There is no `start.ts`; the `demo:*` scripts invoke each app package's `bin`.
## echo-agent
@@ -21,6 +21,12 @@ Run with: `pnpm run demo:repl` (needs `DEEPSEEK_API_KEY` in the environment or a
Run the Code Mode overlay with `pnpm run demo:code-mode`, or pass `acp` for the ACP example. See the [Code Mode example](repl-agent/README.md#code-mode) for its composition and a sample task.
## headless-agent
A non-interactive agent demo that accepts one positional task, runs one complete model/tool turn on the `@deepseek-ai/dsh-cli-demo` app, persists a fresh session, prints `text`, `json`, or `stream-json`, and exits.
Run with: `pnpm run demo:headless -- "task"` (needs `DEEPSEEK_API_KEY`). See [headless-agent/README.md](headless-agent/README.md) for the output contract, safety boundaries, and snapshot suite.
## tui-agent
The full-screen terminal sibling of `repl-agent`: it reuses the same coding backends and tools while forcing the shared terminal app to `dsh-tui`. It is the home of TUI PTY and snapshot scenarios.
@@ -35,7 +41,7 @@ Run with: `pnpm run demo:cordis` (needs `DEEPSEEK_API_KEY`). See [cordis-agent/R
## acp-agent
An agent demo exposed as an **Agent Client Protocol (ACP)** server over JSON-RPC stdio, via the [`@deepseek-ai/dsh-acp-demo`](../packages/examples/acp-demo) app — drive it from Zed or any other ACP client. Also the home of the keyless snapshot tests.
An agent demo exposed as an **Agent Client Protocol (ACP)** server over JSON-RPC stdio, via the [`@deepseek-ai/dsh-acp-demo`](../packages/examples/acp-demo) app — drive it from Zed or any other ACP client. It owns the ACP keyless snapshot suite.
Run with: `pnpm run demo:acp` (needs `DEEPSEEK_API_KEY`); `pnpm run demo:code-mode acp` boots the same server in Code Mode via the `code-mode.cordis.yml` overlay. See [acp-agent/README.md](acp-agent/README.md) for the Zed setup and the snapshot-test design.

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@@ -33,7 +33,7 @@ The editor sets each session's `cwd` to the project it opens, and bash uses that
## Snapshot tests (record-once / replay-deterministic)
This example hosts the ACP snapshot suite. `dsh-llm-replay` reconstructs model streams from `assistant/chunk` events in each scenario's session JSONL, so replay is keyless. Recording runs the real agent and harvests that log; refresh keeps the committed transcript as mock input and rewrites current replay outputs. `replay.override.json` covers throw and hang cases that chunks cannot express, and an optional `workspace/` seeds files. The [snapshot RFC](../../docs/rfc/implemented/testing/2026-06-19-acp-snapshot-tests.md) owns the full design.
This example hosts the ACP snapshot suite. It replays through `dsh-llm-replay`, which reconstructs model streams from `assistant/chunk` events in each scenario's session JSONL. Recording runs the real ACP agent and harvests its logs; refresh keeps the committed transcript as mock input and rewrites current replay outputs. `replay.override.json` covers throw and hang cases that chunks cannot express, and an optional `workspace/` seeds files. The [snapshot RFC](../../docs/rfc/implemented/testing/2026-06-19-acp-snapshot-tests.md) owns the ACP harness design.
## Permissions and sandboxing

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@@ -111,6 +111,7 @@ const SCENARIOS: Scenario[] = [
configPath: WORKSPACE_CONTEXT_CONFIG,
},
{ name: 'cancel', hasModelTurn: true, recorded: false, overridden: true },
{ name: 'cancel-tool-calls', hasModelTurn: true, recorded: false, overridden: true },
{ name: 'subagent-spawn', hasModelTurn: true, recorded: true },
{ name: 'subagent-multi', hasModelTurn: true, recorded: true },
{ name: 'subagent-fork', hasModelTurn: true, recorded: true },
@@ -130,6 +131,13 @@ const SCENARIOS: Scenario[] = [
headerClass: 'advanced',
configPath: ADVANCED_CONFIG,
},
{
name: 'cordis-inspect-jsdoc',
hasModelTurn: true,
recorded: false,
headerClass: 'advanced',
configPath: ADVANCED_CONFIG,
},
// Prompt-submit blocks are authored keylessly: they persist a rejected turn
// and hook events without starting a model step, so their logs still compare.
{ name: 'hook-cc-promptsubmit-block', hasModelTurn: false, comparesLog: true, recorded: false },

4
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@@ -44,10 +44,12 @@ declare const tools: {
/** Required with sandbox_permissions: one sentence for the user explaining why this exact command needs the wider access. */
justification?: string;
}): Promise<string>;
/** Inspect the live cordis runtime that is running THIS agent. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (a flat list of the loaded plugins with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `dynamic` (plugins you mounted via cordis_mount: id, name, state, provided services, awaited services), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Omit `what` to get all six sections. */
/** Inspect the live cordis runtime that is running THIS agent. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (a flat list of the loaded plugins with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `dynamic` (plugins you mounted via cordis_mount: id, name, state, provided services, awaited services), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Omit `what` to get all six sections. With `what:"api"` or `what:"events"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc. */
cordis_inspect(args: {
/** Limit the report to one section. Omit for all sections. */
what?: "services" | "plugins" | "tools" | "dynamic" | "api" | "events";
/** Exact service key or event name whose original JSDoc to include; valid only with what:"api" or what:"events". */
name?: string;
}): Promise<string>;
/** Mount a NEW cordis plugin into the live runtime that is running THIS agent (self-modification). `code` runs as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:"api" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:"events"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, async execute(args) { … } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'boolean'|'object'|'array', required?: true, description?, enum?, items?, properties? }; a JSON-Schema-style { type: 'object', properties, required: […] } wrapper and type 'integer' are also accepted and normalized. A tool's `execute` MUST return an ARRAY of content blocks, e.g. `return [{ type: 'text', text: someString }]` — never a bare string. Mounts can COMPOSE: one plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically on unmount. Sandbox globals: `console` (tagged `[cordis:<id>]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned on unmount) — cordis_inspect what:"api" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime. */
cordis_mount(args: {

6
examples/acp-agent/tests/snapshots/advanced-toolchain/tool-schemas.golden.json
View File

@@ -47,7 +47,7 @@
},
{
"name": "cordis_inspect",
"description": "Inspect the live cordis runtime that is running THIS agent. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (a flat list of the loaded plugins with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `dynamic` (plugins you mounted via cordis_mount: id, name, state, provided services, awaited services), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Omit `what` to get all six sections.",
"description": "Inspect the live cordis runtime that is running THIS agent. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (a flat list of the loaded plugins with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `dynamic` (plugins you mounted via cordis_mount: id, name, state, provided services, awaited services), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc.",
"parameters": {
"type": "object",
"properties": {
@@ -62,6 +62,10 @@
"api",
"events"
]
},
"name": {
"type": "string",
"description": "Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\"."
}
}
}

12
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@@ -0,0 +1,12 @@
{
"steps": [
{ "op": "initialize" },
{ "op": "newSession" },
{
"op": "promptAndCancel",
"text": "Run two shell commands: wait for cancellation, then write skipped.txt.",
"afterUpdate": "tool_call",
"waitForToolCallUpdate": "call_skipped"
}
]
}

15
examples/acp-agent/tests/snapshots/cancel-tool-calls/replay.override.json Normal file
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@@ -0,0 +1,15 @@
[
{
"kind": "chunks",
"chunks": [
{ "type": "block-start", "index": 0, "blockType": "tool-call" },
{ "type": "tool-call-delta", "index": 0, "id": "call_wait", "name": "bash", "argumentsDelta": "{\"command\":\"node -e \\\"setInterval(() => {}, 1000)\\\"\",\"description\":\"Wait until cancellation\"}" },
{ "type": "block-end", "index": 0, "block": { "type": "tool-call", "id": "call_wait", "name": "bash", "arguments": "{\"command\":\"node -e \\\"setInterval(() => {}, 1000)\\\"\",\"description\":\"Wait until cancellation\"}" } },
{ "type": "block-start", "index": 1, "blockType": "tool-call" },
{ "type": "tool-call-delta", "index": 1, "id": "call_skipped", "name": "bash", "argumentsDelta": "{\"command\":\"printf skipped > skipped.txt\",\"description\":\"Write skipped marker\"}" },
{ "type": "block-end", "index": 1, "block": { "type": "tool-call", "id": "call_skipped", "name": "bash", "arguments": "{\"command\":\"printf skipped > skipped.txt\",\"description\":\"Write skipped marker\"}" } },
{ "type": "usage", "usage": { "inputTokens": 10, "outputTokens": 10 } },
{ "type": "finish", "reason": { "kind": "tool-calls" } }
]
}
]

20
examples/acp-agent/tests/snapshots/cancel-tool-calls/session.jsonl Normal file
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@@ -0,0 +1,20 @@
{"type":"session","version":0,"id":"{{sessionId}}","createdAt":0,"cwd":"{{cwd}}"}
{"type":"turn/start","seq":0,"time":1784437195072,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
{"type":"user/message","seq":1,"time":1784437195072,"data":{"content":[{"type":"text","text":"Run two shell commands: wait for cancellation, then write skipped.txt."}],"source":{"kind":"user"}},"surfaceOp":"append"}
{"type":"step/start","seq":2,"time":1784437195076,"data":{"turn":1,"step":1}}
{"type":"request/header","seq":3,"time":1784437195076,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
{"type":"assistant/chunk","seq":4,"time":1784437195077,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
{"type":"assistant/chunk","seq":5,"time":1784437195077,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_wait","name":"bash","argumentsDelta":"{\"command\":\"node -e \\\"setInterval(() => {}, 1000)\\\"\",\"description\":\"Wait until cancellation\"}"}}}
{"type":"assistant/chunk","seq":6,"time":1784437195077,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_wait","name":"bash","arguments":"{\"command\":\"node -e \\\"setInterval(() => {}, 1000)\\\"\",\"description\":\"Wait until cancellation\"}"}}}}
{"type":"assistant/chunk","seq":7,"time":1784437195077,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
{"type":"assistant/chunk","seq":8,"time":1784437195077,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":1,"id":"call_skipped","name":"bash","argumentsDelta":"{\"command\":\"printf skipped > skipped.txt\",\"description\":\"Write skipped marker\"}"}}}
{"type":"assistant/chunk","seq":9,"time":1784437195077,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_skipped","name":"bash","arguments":"{\"command\":\"printf skipped > skipped.txt\",\"description\":\"Write skipped marker\"}"}}}}
{"type":"assistant/chunk","seq":10,"time":1784437195077,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":10}}}}
{"type":"assistant/chunk","seq":11,"time":1784437195077,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
{"type":"assistant/message","seq":12,"time":1784437195078,"data":{"turn":1,"step":1,"content":[{"type":"tool-call","id":"call_wait","name":"bash","arguments":"{\"command\":\"node -e \\\"setInterval(() => {}, 1000)\\\"\",\"description\":\"Wait until cancellation\"}"},{"type":"tool-call","id":"call_skipped","name":"bash","arguments":"{\"command\":\"printf skipped > skipped.txt\",\"description\":\"Write skipped marker\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":10}},"sourceEventSeqs":[4,5,6,7,8,9,10,11],"surfaceOp":"append"}
{"type":"tool/call","seq":13,"time":1784437195078,"data":{"turn":1,"step":1,"callId":"call_wait","name":"bash","arguments":"{\"command\":\"node -e \\\"setInterval(() => {}, 1000)\\\"\",\"description\":\"Wait until cancellation\"}"}}
{"type":"tool/result","seq":14,"time":1784437195089,"data":{"turn":1,"step":1,"callId":"call_wait","content":[{"type":"text","text":"Error: command aborted"}],"isError":true},"sourceEventSeqs":[13],"surfaceOp":"append"}
{"type":"tool/call","seq":15,"time":1784437195089,"data":{"turn":1,"step":1,"callId":"call_skipped","name":"bash","arguments":"{\"command\":\"printf skipped > skipped.txt\",\"description\":\"Write skipped marker\"}"}}
{"type":"tool/result","seq":16,"time":1784437195089,"data":{"turn":1,"step":1,"callId":"call_skipped","content":[{"type":"text","text":"Error: tool call skipped because the step was aborted before execution"}],"isError":true,"error":{"name":"AbortError","code":"ABORTED"}},"sourceEventSeqs":[15],"surfaceOp":"append"}
{"type":"step/end","seq":17,"time":1784437195090,"data":{"turn":1,"step":1}}
{"type":"turn/end","seq":18,"time":1784437195090,"data":{"turn":1,"reason":{"kind":"aborted","reason":"session/cancel"}}}

7
examples/acp-agent/tests/snapshots/cancel-tool-calls/stdout.golden.jsonl Normal file
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@@ -0,0 +1,7 @@
{"jsonrpc":"2.0","id":1,"result":{"protocolVersion":1,"agentInfo":{"name":"deepseek-harness-acp","version":"0.0.1"},"agentCapabilities":{"loadSession":true,"promptCapabilities":{"image":false,"audio":false,"embeddedContext":false}},"authMethods":[]}}
{"jsonrpc":"2.0","id":2,"result":{"sessionId":"{{sessionId}}","configOptions":[{"id":"model","name":"Model","description":"Sets this session's provider and model.","category":"model","type":"select","currentValue":"[\"deepseek\",\"deepseek-v4-flash\"]","options":[{"value":"[\"deepseek\",\"deepseek-v4-flash\"]","name":"deepseek-v4-flash"},{"value":"[\"deepseek\",\"deepseek-v4-pro\"]","name":"deepseek-v4-pro"}]},{"id":"permission","name":"Permissions","description":"The session permission preset: each choice bundles a sandbox mode and an approval policy.","category":"mode","type":"select","currentValue":"danger-full-access","options":[{"value":"workspace-write","name":"workspace-write","description":"Write inside the workspace and permitted temporary directories; wider retries require approval."},{"value":"danger-full-access","name":"danger-full-access","description":"Full file access without approval prompts."}]}]}}
{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call","toolCallId":"call_wait","title":"node -e \"setInterval(() => {}, 1000)\"","kind":"execute","status":"in_progress","rawInput":"node -e \"setInterval(() => {}, 1000)\"","content":[{"type":"content","content":{"type":"text","text":"Wait until cancellation"}}]}}}
{"jsonrpc":"2.0","id":3,"result":{"stopReason":"cancelled"}}
{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call_update","toolCallId":"call_wait","status":"failed","content":[{"type":"content","content":{"type":"text","text":"```console\nError: command aborted\n```"}}]}}}
{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call","toolCallId":"call_skipped","title":"printf skipped > skipped.txt","kind":"execute","status":"in_progress","rawInput":"printf skipped > skipped.txt","content":[{"type":"content","content":{"type":"text","text":"Write skipped marker"}}]}}}
{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call_update","toolCallId":"call_skipped","status":"failed","content":[{"type":"content","content":{"type":"text","text":"```console\nError: tool call skipped because the step was aborted before execution\n```"}}]}}}

7
examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/input.json Normal file
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@@ -0,0 +1,7 @@
{
"steps": [
{ "op": "initialize" },
{ "op": "newSession" },
{ "op": "prompt", "text": "Inspect the exact tools service API and tools/pre-execute event with cordis_inspect, then reply with exactly CORDIS_INSPECT_JSDOC_OK." }
]
}

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8
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24
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@@ -0,0 +1,24 @@
# headless-agent
Headless one-shot agent wiring: DeepSeek V4 + local bash and filesystem tools + subagent delegation + workflows + `todo_write` + JSONL persistence, with [`@deepseek-ai/dsh-cli-demo`](../../packages/examples/cli-demo) as the app front door.
## Run it
```sh
# repo root .env (gitignored) or exported env:
# DEEPSEEK_API_KEY=sk-…
# DEEPSEEK_BASE_URL=https://… # optional; defaults to the public API
pnpm run demo:headless -- "fix the failing test in this workspace"
pnpm run demo:headless --output-format json -- "summarize the implementation"
pnpm run demo:headless --output-format stream-json -- "run the focused tests"
```
Exactly one nonblank positional task is required; quote tasks containing spaces. There is no `-p` flag. `text` prints the last text-bearing assistant message, `json` prints one DSH-native result record, and `stream-json` emits the top-level session's canonical task-turn events before that record. Child sessions surface only through parent tool events and results.
Each invocation creates and persists a fresh session, runs all model and tool steps in one turn, flushes, disposes, and exits. This is non-interactive automation: there is no prompt, approval, resume, second turn, or stdin context. The configured tools can mutate the launch workspace, run commands, spawn child agents, and consume provider tokens.
## Advanced and snapshot wiring
[`advanced.cordis.yml`](advanced.cordis.yml) adds Code Mode and the Cordis tools to the shipped leaf. [`advanced.cordis.snapshot.yml`](advanced.cordis.snapshot.yml) replaces only the live LLM with replay. The tests under [`tests/`](tests/) own the keyless real-Loader smoke, key-gated world-verified smoke, and the `stream-json` replay snapshot with its parent and child session fixtures.
The package-level [CLI contract](../../packages/examples/cli-demo/README.md) documents output records, exit status, cancellation, persistence, and model/token effects.

12
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@@ -0,0 +1,12 @@
# Replay counterpart to advanced.cordis.yml; only the live model is replaced.
- id: base
name: '@cordisjs/plugin-include'
config:
path: ./advanced.cordis.yml
patches:
- id: llm-deepseek
name: '@deepseek-ai/dsh-llm-deepseek'
disabled: true
- insert:
- id: llm-replay
name: '@deepseek-ai/dsh-llm-replay'

25
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@@ -0,0 +1,25 @@
# Add Code Mode and Cordis tools to the headless spawn/workflow stack.
- id: base
name: '@cordisjs/plugin-include'
config:
path: ./cordis.yml
patches:
- id: cli-agent
name: '@deepseek-ai/dsh-cli-demo'
config:
provider: deepseek
model: deepseek-v4-flash
persistenceRoot: './.sessions'
workspaceContext:
maxBytes: 65536
tools:
mode: both
persona: |
You are headless-agent, a coding assistant powered by the {{model}} model. Your working directory is {{cwd}}.
Verify your work by running the code or tests. Keep answers brief and factual.
- insert:
- id: code-runtime
name: '@deepseek-ai/dsh-code-runtime-worker'
- id: tool-cordis
name: '@deepseek-ai/dsh-tool-cordis'

70
examples/headless-agent/composition.md Normal file
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@@ -0,0 +1,70 @@
<!-- Generated by scripts/gen-doc-graphs.ts - do not edit by hand.
Run `pnpm run gen-doc-graphs` to regenerate. -->
# Headless Agent App Composition
The headless demo combines the real DeepSeek adapter and coding capabilities with the one-shot app package, format-pure stdout, and one fresh persisted top-level session.
```mermaid
flowchart LR
cfg["examples/headless-agent<br/>cordis.yml"]
plugin_headless_llm_deepseek["llm-deepseek<br/>@deepseek-ai/dsh-llm-deepseek"]
cfg --> plugin_headless_llm_deepseek
plugin_headless_bash["bash<br/>@deepseek-ai/dsh-bash-local"]
cfg --> plugin_headless_bash
plugin_headless_cli_agent["cli-agent<br/>@deepseek-ai/dsh-cli-demo"]
cfg --> plugin_headless_cli_agent
plugin_headless_cli_agent --> bundle_agent_core["@deepseek-ai/dsh-agent-spine-demo"]
plugin_headless_cli_agent --> bundle_jsonl["@deepseek-ai/dsh-session-persistence-jsonl"]
plugin_headless_cli_agent --> frontdoor_cli["one-shot driver<br/>format-pure stdout<br/>fresh top-level agent"]
bundle_agent_core --> spine_llm["ctx.llm"]
bundle_agent_core --> spine_sessions["ctx.sessions"]
bundle_agent_core --> spine_tools["ctx.tools + tool-bash"]
bundle_agent_core --> spine_loop["ctx.agents + ctx.agentLoop"]
plugin_headless_compact_basic["compact-basic<br/>@deepseek-ai/dsh-compact-basic"]
cfg --> plugin_headless_compact_basic
plugin_headless_subagent["subagent<br/>@deepseek-ai/dsh-subagent"]
cfg --> plugin_headless_subagent
plugin_headless_subagent_spawn["subagent-spawn<br/>@deepseek-ai/dsh-subagent-spawn"]
cfg --> plugin_headless_subagent_spawn
plugin_headless_subagent_fork["subagent-fork<br/>@deepseek-ai/dsh-subagent-fork"]
cfg --> plugin_headless_subagent_fork
plugin_headless_tool_subagent["tool-subagent<br/>@deepseek-ai/dsh-tool-subagent"]
cfg --> plugin_headless_tool_subagent
plugin_headless_tool_subagent_fork["tool-subagent-fork<br/>@deepseek-ai/dsh-tool-subagent"]
cfg --> plugin_headless_tool_subagent_fork
plugin_headless_workflow_workerthread["workflow-workerthread<br/>@deepseek-ai/dsh-workflow-workerthread"]
cfg --> plugin_headless_workflow_workerthread
plugin_headless_tool_workflow["tool-workflow<br/>@deepseek-ai/dsh-tool-workflow"]
cfg --> plugin_headless_tool_workflow
plugin_headless_tool_todo["tool-todo<br/>@deepseek-ai/dsh-tool-todo"]
cfg --> plugin_headless_tool_todo
plugin_headless_fs_local["fs-local<br/>@deepseek-ai/dsh-fs-local"]
cfg --> plugin_headless_fs_local
plugin_headless_fs_policy["fs-policy<br/>@deepseek-ai/dsh-fs-policy"]
cfg --> plugin_headless_fs_policy
plugin_headless_tool_fs["tool-fs<br/>@deepseek-ai/dsh-tool-fs"]
cfg --> plugin_headless_tool_fs
```
| Plugin id | Package / module |
| --- | --- |
| `llm-deepseek` | `@deepseek-ai/dsh-llm-deepseek` |
| `bash` | `@deepseek-ai/dsh-bash-local` |
| `cli-agent` | `@deepseek-ai/dsh-cli-demo` |
| `compact-basic` | `@deepseek-ai/dsh-compact-basic` |
| `subagent` | `@deepseek-ai/dsh-subagent` |
| `subagent-spawn` | `@deepseek-ai/dsh-subagent-spawn` |
| `subagent-fork` | `@deepseek-ai/dsh-subagent-fork` |
| `tool-subagent` | `@deepseek-ai/dsh-tool-subagent` |
| `tool-subagent-fork` | `@deepseek-ai/dsh-tool-subagent` |
| `workflow-workerthread` | `@deepseek-ai/dsh-workflow-workerthread` |
| `tool-workflow` | `@deepseek-ai/dsh-tool-workflow` |
| `tool-todo` | `@deepseek-ai/dsh-tool-todo` |
| `fs-local` | `@deepseek-ai/dsh-fs-local` |
| `fs-policy` | `@deepseek-ai/dsh-fs-policy` |
| `tool-fs` | `@deepseek-ai/dsh-tool-fs` |
Source config: [`examples/headless-agent/cordis.yml`](cordis.yml).
Maintenance mode: hybrid: the leaf plugin list is parsed from its `cordis.yml`; app package expansion is curated from package source.

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@@ -0,0 +1,99 @@
# One-shot coding agent with format-pure stdout. The app bin loads the
# gitignored root `.env`; this file reads `DEEPSEEK_API_KEY` and optional
# `DEEPSEEK_BASE_URL` through `!!js`.
# The DeepSeek adapter. Swap to '@deepseek-ai/dsh-llm-pi-ai' for the pi-ai-backed
# twin (same config shape; `reasoning: high` replaces thinking/reasoningEffort).
- id: llm-deepseek
name: '@deepseek-ai/dsh-llm-deepseek'
config:
apiKey: !!js process.env.DEEPSEEK_API_KEY
baseURL: !!js process.env.DEEPSEEK_BASE_URL
models:
- id: deepseek-v4-pro
- id: deepseek-v4-flash
- id: bash
name: '@deepseek-ai/dsh-bash-local'
config:
timeoutMs: 60000
# The app bundle pre-creates one fresh `main` agent per invocation.
- id: cli-agent
name: '@deepseek-ai/dsh-cli-demo'
config:
provider: deepseek
model: deepseek-v4-flash
persistenceRoot: './.sessions'
workspaceContext:
maxBytes: 65536
persona: |
You are headless-agent, a coding assistant powered by the {{model}} model.
Verify your work by running the code or tests. Keep answers brief and
factual.
# Summarize an older range when derived history approaches the context window.
- id: compact-basic
name: '@deepseek-ai/dsh-compact-basic'
config:
contextWindow: 128000
thresholdRatio: 0.8
retainTokens: 20480
summarizationModel: ''
maxTokens: 8192
compactionRetries: 1
# Expose fresh-child `spawn` and completed-prefix `fork` through independent
# in-process backends.
- id: subagent
name: '@deepseek-ai/dsh-subagent'
- id: subagent-spawn
name: '@deepseek-ai/dsh-subagent-spawn'
config:
providerName: spawn
- id: subagent-fork
name: '@deepseek-ai/dsh-subagent-fork'
config:
providerName: fork
- id: tool-subagent
name: '@deepseek-ai/dsh-tool-subagent'
config:
provider: spawn
toolName: subagent
- id: tool-subagent-fork
name: '@deepseek-ai/dsh-tool-subagent'
config:
provider: fork
toolName: subagent_fork
# The worker-thread workflow engine fans a model-written JavaScript script's
# `agent()` calls out through the spawn backend.
- id: workflow-workerthread
name: '@deepseek-ai/dsh-workflow-workerthread'
config:
provider: spawn
- id: tool-workflow
name: '@deepseek-ai/dsh-tool-workflow'
# `todo_write` replaces the logged whole list.
- id: tool-todo
name: '@deepseek-ai/dsh-tool-todo'
# Policy loads before the model-facing filesystem tools so writes and edits
# require an observed file. Relative paths resolve from the process cwd.
- id: fs-local
name: '@deepseek-ai/dsh-fs-local'
config:
cwd: !!js process.cwd()
- id: fs-policy
name: '@deepseek-ai/dsh-fs-policy'
- id: tool-fs
name: '@deepseek-ai/dsh-tool-fs'

7
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@@ -0,0 +1,7 @@
{
"name": "headless-agent-example",
"private": true,
"version": "0.0.1",
"type": "module",
"description": "Runnable demo: one complete headless coding-agent turn"
}

37
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@@ -0,0 +1,37 @@
import type { Context } from 'cordis'
import { CallId, LlmAdapter, type GenerateOptions, type StreamChunk } from '@deepseek-ai/dsh-llm'
/** Keyless headless-agent adapter: one real bash call followed by a final answer. */
class CliMockAdapter extends LlmAdapter {
async * stream(options: GenerateOptions): AsyncIterable<StreamChunk> {
const toolResult = options.messages.at(-1)?.content.find(block => block.type === 'tool-result')
if (toolResult === undefined) {
const args = JSON.stringify({ command: 'printf CLI_TOOL_ROUND_TRIP', description: 'Prove the CLI tool round trip.' })
yield { type: 'block-start', index: 0, blockType: 'tool-call' }
yield { type: 'tool-call-delta', index: 0, id: CallId('cli-smoke-call'), name: 'bash', argumentsDelta: args }
yield { type: 'block-end', index: 0, block: { type: 'tool-call', id: CallId('cli-smoke-call'), name: 'bash', arguments: args } }
yield { type: 'usage', usage: { inputTokens: 11, outputTokens: 3, cacheReadTokens: 2 } }
yield { type: 'finish', reason: { kind: 'tool-calls' } }
return
}
const toolText = toolResult.content
.filter(block => block.type === 'text')
.map(block => block.text)
.join('')
const reply = `CLI tool round trip complete: ${toolText.trim()}`
yield { type: 'block-start', index: 0, blockType: 'text' }
yield { type: 'text-delta', index: 0, text: reply }
yield { type: 'block-end', index: 0, block: { type: 'text', text: reply } }
yield { type: 'usage', usage: { inputTokens: 7, outputTokens: 5, reasoningTokens: 1 } }
yield { type: 'finish', reason: { kind: 'stop' } }
}
}
export const name = 'cli-mock-llm'
export const inject = ['llm']
/** Register the keyless `cli-mock` adapter. */
export function apply(ctx: Context): void {
ctx.llm.registerAdapter(['cli-mock'], new CliMockAdapter())
}

19
examples/headless-agent/tests/fixtures/cli.cordis.yml vendored Normal file
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- id: cli-mock-llm
name: './cli-mock-llm.ts'
- id: base
name: '@cordisjs/plugin-include'
config:
path: ../../cordis.yml
patches:
- id: llm-deepseek
name: '@deepseek-ai/dsh-llm-deepseek'
disabled: true
- id: cli-agent
name: '@deepseek-ai/dsh-cli-demo'
config:
provider: cli-mock
model: cli-mock
persistenceRoot: './.sessions'
workspaceContext: false
persona: 'Keyless headless-agent smoke.'

140
examples/headless-agent/tests/headless.snapshot.ts Normal file
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import { readFile, readdir, writeFile } from 'node:fs/promises'
import { delimiter, dirname, join } from 'node:path'
import { fileURLToPath } from 'node:url'
import {
normalizeSessionLog,
normalizeStdout,
scrubRequestHeaders,
type NormalizeContext,
} from '@deepseek-ai/dsh-acp-snapshot'
import { LOADER_SMOKE_TEST_TIMEOUT_MS, runLoaderSmoke } from '@deepseek-ai/dsh-loader-smoke'
import { describe, expect, it } from 'vitest'
const snapshotsDir = join(dirname(fileURLToPath(import.meta.url)), 'snapshots')
const scenarioDir = join(snapshotsDir, 'advanced-toolchain')
const sessionFixture = join(scenarioDir, 'session.jsonl')
const streamGolden = join(scenarioDir, 'stream-json.golden.jsonl')
const configPath = fileURLToPath(new URL('../advanced.cordis.snapshot.yml', import.meta.url))
const binScript = fileURLToPath(new URL('../../../packages/examples/cli-demo/src/bin.ts', import.meta.url))
const tsconfigPath = fileURLToPath(new URL('../../../tsconfig.json', import.meta.url))
const refreshing = process.env.DSH_SNAPSHOT === 'refresh'
interface JsonObject {
[key: string]: unknown
}
interface PersistedLog {
readonly content: string
readonly header: JsonObject
}
function parseJsonl(content: string): JsonObject[] {
return content.split('\n')
.filter(line => line.trim().length > 0)
.map(line => JSON.parse(line) as JsonObject)
}
function contextFromLogs(contents: readonly string[]): NormalizeContext {
const headers = contents.map(content => parseJsonl(content)[0])
return {
sessionIds: headers.flatMap(header => typeof header?.id === 'string' ? [header.id] : []),
cwd: typeof headers[0]?.cwd === 'string' ? headers[0].cwd : '\0no-cwd\0',
}
}
function normalizeHeadlessStream(rawStdout: string, cwd: string): string {
const records = parseJsonl(rawStdout)
if (records.length === 0) throw new Error('headless snapshot emitted no stream-json records')
const final = records.at(-1)
if (final?.type !== 'result') throw new Error('headless snapshot did not end with a result record')
if (records.slice(0, -1).some(record => record.type !== 'session_event')) {
throw new Error('headless snapshot emitted a non-event record before its result')
}
const sessionIds = [...new Set(records.flatMap(record => typeof record.sessionId === 'string' ? [record.sessionId] : []))]
if (sessionIds.length !== 1) throw new Error(`headless snapshot streamed ${sessionIds.length} main session ids`)
const context: NormalizeContext = { sessionIds, cwd }
const events = records.slice(0, -1).map((record) => {
if (record.event === null || typeof record.event !== 'object' || Array.isArray(record.event)) {
throw new Error('headless snapshot emitted an invalid session event')
}
return record.event as JsonObject
})
const normalizedEvents = parseJsonl(scrubRequestHeaders(normalizeSessionLog(
`${events.map(event => JSON.stringify(event)).join('\n')}\n`,
context,
)))
const normalizedRecords = records.map((record, index) => index < normalizedEvents.length
? { ...record, event: normalizedEvents[index] }
: record)
return normalizeStdout(`${normalizedRecords.map(record => JSON.stringify(record)).join('\n')}\n`, context)
}
async function advancedPrompt(): Promise<string> {
const input = JSON.parse(await readFile(join(scenarioDir, 'input.json'), 'utf8')) as {
steps?: { op?: unknown; text?: unknown }[]
}
const prompt = input.steps?.find(step => step.op === 'prompt')?.text
if (typeof prompt !== 'string') throw new Error('advanced-toolchain input has no prompt step')
return prompt
}
async function persistedLogs(cwd: string): Promise<PersistedLog[]> {
const root = join(cwd, '.sessions')
const files = (await readdir(root, { recursive: true })).filter(file => file.endsWith('.jsonl'))
return Promise.all(files.map(async (file) => {
const content = await readFile(join(root, file), 'utf8')
return { content, header: parseJsonl(content)[0] ?? {} }
}))
}
describe('headless stream-json snapshots', () => {
it('replays the advanced toolchain through the one-shot app', async () => {
const prompt = await advancedPrompt()
const expectedSessions = await Promise.all([
sessionFixture,
join(scenarioDir, 'session.1.jsonl'),
join(scenarioDir, 'session.2.jsonl'),
].map(file => readFile(file, 'utf8')))
let runCwd = ''
const result = await runLoaderSmoke({
label: 'advanced headless stream-json snapshot',
tempDirPrefix: 'headless-snapshot-advanced-',
binScript,
configPath,
binArgs: ['--config', configPath, '--output-format', 'stream-json', prompt],
tsconfigPath,
env: {
DSH_SNAPSHOT: 'replay',
DSH_SNAPSHOT_FILE: sessionFixture,
DSH_SNAPSHOT_CHILD_FILES: [join(scenarioDir, 'session.1.jsonl'), join(scenarioDir, 'session.2.jsonl')].join(delimiter),
NODE_OPTIONS: [process.env.NODE_OPTIONS, '--disable-warning=ExperimentalWarning'].filter(Boolean).join(' '),
},
prepare: (cwd) => { runCwd = cwd },
inspect: async (cwd) => {
const logs = await persistedLogs(cwd)
expect(logs).toHaveLength(3)
const parents = logs.filter(log => typeof log.header.parentSession !== 'string')
expect(parents).toHaveLength(1)
const parent = parents[0]
if (parent === undefined) throw new Error('headless snapshot did not persist its main session')
const children = logs.filter(log => typeof log.header.parentSession === 'string')
.sort((left, right) => Number(left.header.createdAt) - Number(right.header.createdAt))
const actualSessions = [parent, ...children]
const actualContext = contextFromLogs(actualSessions.map(log => log.content))
const expectedContext = contextFromLogs(expectedSessions)
for (const [index, actual] of actualSessions.entries()) {
const expected = expectedSessions[index]
if (expected === undefined) throw new Error(`headless snapshot has no fixture for persisted log ${index}`)
expect(scrubRequestHeaders(normalizeSessionLog(actual.content, actualContext)))
.toBe(scrubRequestHeaders(normalizeSessionLog(expected, expectedContext)))
}
},
})
expect(result.stderr).toBe('')
const normalized = normalizeHeadlessStream(result.stdout, runCwd)
if (refreshing) await writeFile(streamGolden, normalized)
expect(normalized).toBe(await readFile(streamGolden, 'utf8'))
}, LOADER_SMOKE_TEST_TIMEOUT_MS)
})

43
examples/headless-agent/tests/keyless-smoke.e2e.ts Normal file
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import { readdir } from 'node:fs/promises'
import { fileURLToPath } from 'node:url'
import { describe, expect, it } from 'vitest'
import { LOADER_SMOKE_TEST_TIMEOUT_MS, runLoaderSmoke } from '@deepseek-ai/dsh-loader-smoke'
import type { SessionEvent } from '@deepseek-ai/dsh-session'
const binScript = fileURLToPath(new URL('../../../packages/examples/cli-demo/src/bin.ts', import.meta.url))
const configPath = fileURLToPath(new URL('./fixtures/cli.cordis.yml', import.meta.url))
const tsconfigPath = fileURLToPath(new URL('../../../tsconfig.json', import.meta.url))
describe('headless-agent keyless smoke', () => {
it('boots the real Loader tree, runs a real bash tool round trip, and persists the turn', async () => {
let persisted = false
const { stdout, stderr } = await runLoaderSmoke({
label: 'headless-agent',
tempDirPrefix: 'headless-agent-smoke-',
binScript,
configPath,
binArgs: ['--config', configPath, '--output-format', 'stream-json', 'prove the tool path'],
tsconfigPath,
inspect: async (cwd) => {
const files = await readdir(cwd, { recursive: true })
persisted = files.some(file => file.endsWith('.jsonl'))
},
})
const lines = stdout.trimEnd().split('\n').map(line => JSON.parse(line) as Record<string, unknown>)
const events = lines.slice(0, -1).map(line => line['event'] as SessionEvent)
const result = lines.at(-1)
expect(stderr).toBe('')
expect(events.some(event => event.type === 'tool/call' && event.data.name === 'bash')).toBe(true)
const toolResult = events.find(event => event.type === 'tool/result')
expect(JSON.stringify(toolResult)).toContain('CLI_TOOL_ROUND_TRIP')
expect(result).toMatchObject({
type: 'result',
success: true,
turn: 1,
reason: { kind: 'completed' },
usage: { inputTokens: 18, outputTokens: 8, cacheReadTokens: 2, reasoningTokens: 1 },
})
expect(String(result?.['result'])).toContain('CLI_TOOL_ROUND_TRIP')
expect(persisted).toBe(true)
}, LOADER_SMOKE_TEST_TIMEOUT_MS)
})

33
examples/headless-agent/tests/real-model.e2e.ts Normal file
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import { readFile, writeFile } from 'node:fs/promises'
import { join } from 'node:path'
import { fileURLToPath } from 'node:url'
import { describe, expect, it } from 'vitest'
import { runLoaderSmoke } from '@deepseek-ai/dsh-loader-smoke'
const binScript = fileURLToPath(new URL('../../../packages/examples/cli-demo/src/bin.ts', import.meta.url))
const configPath = fileURLToPath(new URL('../cordis.yml', import.meta.url))
const tsconfigPath = fileURLToPath(new URL('../../../tsconfig.json', import.meta.url))
const hasKey = Boolean(process.env.DEEPSEEK_API_KEY)
describe.skipIf(!hasKey)('headless-agent with real model', () => {
it('modifies a temporary workspace and verifies the file outside the agent', async () => {
let verified = ''
const { stdout } = await runLoaderSmoke({
label: 'headless-agent real model',
tempDirPrefix: 'headless-agent-real-',
binScript,
configPath,
binArgs: [
'--config',
configPath,
'Read task.txt, replace its complete contents with exactly "value=after" followed by a newline, read it again, and report briefly.',
],
tsconfigPath,
processTimeoutMs: 120_000,
prepare: cwd => writeFile(join(cwd, 'task.txt'), 'value=before\n'),
inspect: async (cwd) => { verified = await readFile(join(cwd, 'task.txt'), 'utf8') },
})
expect(verified).toBe('value=after\n')
expect(stdout.trim().length).toBeGreaterThan(0)
}, 135_000)
})

7
examples/headless-agent/tests/snapshots/advanced-toolchain/input.json Normal file
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{
"steps": [
{ "op": "initialize" },
{ "op": "newSession" },
{ "op": "prompt", "text": "Run this advanced flow exactly once: mount a no-op Cordis plugin named snapshot-marker; use run_code to inspect the live dynamic mounts through tools.cordis_inspect; delegate once to a direct spawn child; run one workflow that delegates to another spawn child; unmount dyn-1; then reply with exactly ADVANCED_HEADLESS_OK." }
]
}

13
examples/headless-agent/tests/snapshots/advanced-toolchain/session.1.jsonl Normal file
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{"type":"session","version":0,"id":"22222222-2222-4222-8222-222222222222","createdAt":1783950001000,"cwd":"/tmp/advanced-headless","parentSession":"11111111-1111-4111-8111-111111111111"}
{"type":"turn/start","seq":0,"time":1783957884563,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
{"type":"user/message","seq":1,"time":1783957884563,"data":{"content":[{"type":"text","text":"Reply with exactly DIRECT_CHILD_OK and nothing else."}],"source":{"kind":"user"}},"surfaceOp":"append"}
{"type":"step/start","seq":2,"time":1783957884564,"data":{"turn":1,"step":1}}
{"type":"request/header","seq":3,"time":1783957884564,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
{"type":"assistant/chunk","seq":4,"time":1783950001005,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
{"type":"assistant/chunk","seq":5,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":0,"text":"DIRECT_CHILD_OK"}}}
{"type":"assistant/chunk","seq":6,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DIRECT_CHILD_OK"}}}}
{"type":"assistant/chunk","seq":7,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
{"type":"assistant/chunk","seq":8,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
{"type":"assistant/message","seq":9,"time":1783957884564,"data":{"turn":1,"step":1,"content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[4,5,6,7,8],"surfaceOp":"append"}
{"type":"step/end","seq":10,"time":1783957884564,"data":{"turn":1,"step":1}}
{"type":"turn/end","seq":11,"time":1783957884564,"data":{"turn":1,"reason":{"kind":"completed"}}}

13
examples/headless-agent/tests/snapshots/advanced-toolchain/session.2.jsonl Normal file
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{"type":"session","version":0,"id":"33333333-3333-4333-8333-333333333333","createdAt":1783950002000,"cwd":"/tmp/advanced-headless","parentSession":"11111111-1111-4111-8111-111111111111"}
{"type":"turn/start","seq":0,"time":1783957884700,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
{"type":"user/message","seq":1,"time":1783957884700,"data":{"content":[{"type":"text","text":"Reply with exactly WORKFLOW_CHILD_OK and nothing else."}],"source":{"kind":"user"}},"surfaceOp":"append"}
{"type":"step/start","seq":2,"time":1783957884700,"data":{"turn":1,"step":1}}
{"type":"request/header","seq":3,"time":1783957884701,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
{"type":"assistant/chunk","seq":4,"time":1783950002005,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
{"type":"assistant/chunk","seq":5,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":0,"text":"WORKFLOW_CHILD_OK"}}}
{"type":"assistant/chunk","seq":6,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"WORKFLOW_CHILD_OK"}}}}
{"type":"assistant/chunk","seq":7,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
{"type":"assistant/chunk","seq":8,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
{"type":"assistant/message","seq":9,"time":1783957884701,"data":{"turn":1,"step":1,"content":[{"type":"text","text":"WORKFLOW_CHILD_OK"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[4,5,6,7,8],"surfaceOp":"append"}
{"type":"step/end","seq":10,"time":1783957884701,"data":{"turn":1,"step":1}}
{"type":"turn/end","seq":11,"time":1783957884701,"data":{"turn":1,"reason":{"kind":"completed"}}}

64
examples/headless-agent/tests/snapshots/advanced-toolchain/session.jsonl Normal file
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{"type":"session","version":0,"id":"11111111-1111-4111-8111-111111111111","createdAt":1783950000000,"cwd":"/tmp/advanced-headless"}
{"type":"turn/start","seq":0,"time":1783957884479,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
{"type":"user/message","seq":1,"time":1783957884479,"data":{"content":[{"type":"text","text":"Run this advanced flow exactly once: mount a no-op Cordis plugin named snapshot-marker; use run_code to inspect the live dynamic mounts through tools.cordis_inspect; delegate once to a direct spawn child; run one workflow that delegates to another spawn child; unmount dyn-1; then reply with exactly ADVANCED_HEADLESS_OK."}],"source":{"kind":"user"}},"surfaceOp":"append"}
{"type":"step/start","seq":2,"time":1783957884486,"data":{"turn":1,"step":1}}
{"type":"request/header","seq":3,"time":1783957884486,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
{"type":"assistant/chunk","seq":4,"time":1783950000005,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
{"type":"assistant/chunk","seq":5,"time":1783950000006,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-mount","name":"cordis_mount","argumentsDelta":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}
{"type":"assistant/chunk","seq":6,"time":1783950000007,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}}
{"type":"assistant/chunk","seq":7,"time":1783950000008,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
{"type":"assistant/chunk","seq":8,"time":1783950000009,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
{"type":"assistant/message","seq":9,"time":1783957884487,"data":{"turn":1,"step":1,"content":[{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[4,5,6,7,8],"surfaceOp":"append"}
{"type":"tool/call","seq":10,"time":1783957884487,"data":{"turn":1,"step":1,"callId":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}
{"type":"tool/result","seq":11,"time":1783957884488,"data":{"turn":1,"step":1,"callId":"advanced-mount","content":[{"type":"text","text":"mounted dyn-1 (plugin \"snapshot-marker\", state: active)"}],"isError":false},"sourceEventSeqs":[10],"surfaceOp":"append"}
{"type":"step/end","seq":12,"time":1783957884489,"data":{"turn":1,"step":1}}
{"type":"step/start","seq":13,"time":1783957884489,"data":{"turn":1,"step":2}}
{"type":"assistant/chunk","seq":14,"time":1783950000015,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
{"type":"assistant/chunk","seq":15,"time":1783950000016,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-code","name":"run_code","argumentsDelta":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}}}
{"type":"assistant/chunk","seq":16,"time":1783950000017,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}}}}
{"type":"assistant/chunk","seq":17,"time":1783950000018,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
{"type":"assistant/chunk","seq":18,"time":1783950000019,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
{"type":"assistant/message","seq":19,"time":1783957884490,"data":{"turn":1,"step":2,"content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[14,15,16,17,18],"surfaceOp":"append"}
{"type":"tool/call","seq":20,"time":1783957884490,"data":{"turn":1,"step":2,"callId":"advanced-code","name":"run_code","arguments":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}}
{"type":"tool/code-dispatch","seq":21,"time":1783957884560,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"cordis_inspect","arguments":{"what":"dynamic"},"isError":false,"resultSummary":"## dynamic\n- dyn-1: snapshot-marker [active]"}}
{"type":"tool/result","seq":22,"time":1783957884561,"data":{"turn":1,"step":2,"callId":"advanced-code","content":[{"type":"text","text":"## dynamic\n- dyn-1: snapshot-marker [active]"}],"isError":false,"meta":{"logs":[]}},"sourceEventSeqs":[20],"surfaceOp":"append"}
{"type":"step/end","seq":23,"time":1783957884561,"data":{"turn":1,"step":2}}
{"type":"step/start","seq":24,"time":1783957884562,"data":{"turn":1,"step":3}}
{"type":"assistant/chunk","seq":25,"time":1783950000026,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
{"type":"assistant/chunk","seq":26,"time":1783950000027,"data":{"turn":1,"step":3,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-direct-child","name":"subagent","argumentsDelta":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}
{"type":"assistant/chunk","seq":27,"time":1783950000028,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}}
{"type":"assistant/chunk","seq":28,"time":1783950000029,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
{"type":"assistant/chunk","seq":29,"time":1783950000030,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
{"type":"assistant/message","seq":30,"time":1783957884562,"data":{"turn":1,"step":3,"content":[{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[25,26,27,28,29],"surfaceOp":"append"}
{"type":"tool/call","seq":31,"time":1783957884562,"data":{"turn":1,"step":3,"callId":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}
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64
examples/headless-agent/tests/snapshots/advanced-toolchain/stream-json.golden.jsonl Normal file
View File

@@ -0,0 +1,64 @@
{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/start","seq":0,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}}
{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Run this advanced flow exactly once: mount a no-op Cordis plugin named snapshot-marker; use run_code to inspect the live dynamic mounts through tools.cordis_inspect; delegate once to a direct spawn child; run one workflow that delegates to another spawn child; unmount dyn-1; then reply with exactly ADVANCED_HEADLESS_OK."}],"source":{"kind":"user"}},"surfaceOp":"append"}}
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{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":36,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-workflow","name":"workflow","argumentsDelta":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}}}}
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{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":38,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
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{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":42,"time":0,"data":{"turn":1,"step":4,"callId":"advanced-workflow","content":[{"type":"text","text":"workflow \"advanced-headless-snapshot\" completed (1 agent).\nReturn value:\n{\n \"reply\": \"WORKFLOW_CHILD_OK\"\n}"}],"isError":false},"sourceEventSeqs":[41],"surfaceOp":"append"}}
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{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":52,"time":0,"data":{"turn":1,"step":5,"callId":"advanced-unmount","content":[{"type":"text","text":"unmounted dyn-1 (plugin \"snapshot-marker\")"}],"isError":false},"sourceEventSeqs":[51],"surfaceOp":"append"}}
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1
examples/package.json
View File

@@ -10,6 +10,7 @@
"@deepseek-ai/dsh-acp-demo": "workspace:*",
"@deepseek-ai/dsh-bash-local": "workspace:*",
"@deepseek-ai/dsh-bash-sandbox": "workspace:*",
"@deepseek-ai/dsh-cli-demo": "workspace:*",
"@deepseek-ai/dsh-code-runtime-worker": "workspace:*",
"@deepseek-ai/dsh-compact-basic": "workspace:*",
"@deepseek-ai/dsh-fs-local": "workspace:*",

5
examples/repl-agent/README.md
View File

@@ -1,6 +1,6 @@
# repl-agent
The repl-agent wiring: DeepSeek V4 + the `read`/`write`/`edit` filesystem tools + the bash tool suite + subagent delegation + `todo_write` + readline chat + JSONL persistence, loaded from `cordis.yml`. The sibling [`tui-agent`](../tui-agent/README.md) fixes the same agent composition to the full-screen terminal front door.
The repl-agent wiring: DeepSeek V4 + the `read`/`write`/`edit` filesystem tools + the bash tool suite + subagent delegation + workflows + `todo_write` + readline chat + JSONL persistence, loaded from `cordis.yml`. The sibling [`tui-agent`](../tui-agent/README.md) fixes the same agent composition to the full-screen terminal front door.
## Run it
@@ -52,6 +52,7 @@ This example is a thin leaf `cordis.yml`: it picks the swappable backends, loads
| `stdio-agent` (`@deepseek-ai/dsh-stdio-demo`) | the app bundle: the agent-spine demo + JSONL persistence + the configured terminal channel + a pre-created `main` agent. This leaf fixes `ui.mode` to `readline`; `tui-agent` owns the corresponding TUI leaf |
| `subagent`, `subagent-spawn`, `subagent-fork` | the subagent provider registry plus the two in-process backends: a fresh child and a child seeded with the parent's completed-turn prefix |
| `tool-subagent`, `tool-subagent-fork` | two model-facing `dsh-tool-subagent` loads, each bound to a different provider and exposed under a distinct tool name (`subagent`, `subagent_fork`) |
| `workflow-workerthread`, `tool-workflow` | the worker-thread workflow engine and its model-facing `workflow` tool, with child calls routed through the spawn backend |
| `tool-todo` | the model-facing `todo_write` tool; writes the whole task list to the session log and renders as a persistent TUI plan or readline checklist |
| `fs-local`, `fs-policy`, `tool-fs` | the filesystem stack: the local `ctx.fs` provider, the read-before-write/edit policy gate (on the `fs/*` event gate), and the model-facing `read`/`write`/`edit` tools. Relative paths resolve against the session workspace |
@@ -63,4 +64,4 @@ This example is a thin leaf `cordis.yml`: it picks the swappable backends, loads
- `tests/compaction.e2e.ts` — the compaction smoke: a real multi-step bash task runs with a deliberately tiny context window so the auto-compaction listener fires MID-SESSION. Verifies the WORLD — a `compact/start…end` pair landed in the real log, the surface shrank (a replace node shadowed older nodes), and the agent still produced a correct final answer after compaction.
- `tests/todo-write.e2e.ts` — a real model drives the real `todo_write` tool and the test verifies the resulting `todo/write` session event.
These self-skip without `DEEPSEEK_API_KEY`. `tests/code-mode.e2e.ts` is the with-key Code Mode proof — a real model, a two-tool task, asserting the wire tool list was exactly `[run_code]`, the `tool/code-dispatch` events landed under the parent call, and the curated answer came back. The keyless boot smokes run in the default e2e gate: `tests/keyless-smoke.e2e.ts` (the full real tree, dummy key, no prompt → no model call) and `tests/code-mode-keyless-smoke.e2e.ts` (the same guard for the Code Mode overlay).
These self-skip without `DEEPSEEK_API_KEY`. `tests/code-mode.e2e.ts` is the with-key Code Mode proof — a real model, a two-tool task, asserting the wire tool list was exactly `[run_code]`, the `tool/code-dispatch` events landed under the parent call, and the curated answer came back. The keyless Loader smokes run in the default e2e gate: `tests/keyless-smoke.e2e.ts` and `tests/code-mode-keyless-smoke.e2e.ts`.

4
examples/repl-agent/cordis.yml
View File

@@ -51,8 +51,8 @@
- id: token-meter
name: '@deepseek-ai/dsh-token-meter'
# Summarize an older range when measured history approaches the context window.
# Service-wide policy provides the ordinary threshold and retained-tail defaults.
# Summarize an older range after measured pressure or a canonical provider overflow.
# Service-wide policy provides pressure, retention, and one overflow-retry default.
- id: compact-basic
name: '@deepseek-ai/dsh-compact-basic'

5
knip.json
View File

@@ -10,6 +10,7 @@
"examples": {
"entry": [
"echo-agent/src/*.ts",
"headless-agent/tests/fixtures/cli-mock-llm.ts",
"tui-agent/tests/fixtures/tui-scripted-llm.ts",
"*/tests/**/*.e2e.ts",
"*/tests/**/*.snapshot.ts"
@@ -114,6 +115,10 @@
"entry": ["tests/**/*.spec.ts", "tests/**/*.e2e.ts"],
"project": ["src/**/*.ts", "tests/**/*.ts"]
},
"packages/examples/cli-demo": {
"entry": ["tests/**/*.spec.ts", "tests/**/*.e2e.ts"],
"project": ["src/**/*.ts", "tests/**/*.ts"]
},
"packages/ui/stdio": {
"entry": ["tests/**/*.spec.ts"],
"project": ["src/**/*.ts", "tests/**/*.ts"]

1
package.json
View File

@@ -80,6 +80,7 @@
"hygiene": "pnpm run knip && pnpm run publint && pnpm run constraints && pnpm run verify-cordis-config && pnpm run verify-node-next-types && pnpm run verify-runtime-closure",
"demo:echo": "node --expose-internals --import tsx packages/examples/stdio-demo/src/bin.ts examples/echo-agent/cordis.yml",
"demo:repl": "node --expose-internals --import tsx packages/examples/stdio-demo/src/bin.ts examples/repl-agent/cordis.yml",
"demo:headless": "node --expose-internals --import tsx packages/examples/cli-demo/src/bin.ts --config examples/headless-agent/cordis.yml",
"demo:tui": "node --expose-internals --import tsx packages/examples/stdio-demo/src/bin.ts examples/tui-agent/cordis.yml",
"demo:code-mode": "node scripts/demo-code-mode.mjs",
"demo:cordis": "node --expose-internals --import tsx packages/examples/stdio-demo/src/bin.ts examples/cordis-agent/cordis.yml",

1
packages/AGENTS.md
View File

@@ -6,6 +6,7 @@ These package-specific rules supplement the repo-wide [conventions](../AGENTS.md
- **Optional services use `ctx.get(name)`.** Reserve `ctx.<name>` for declared injections; the property proxy is topology-sensitive, while strict `ctx.get` reads the global service store ([postmortem](../docs/postmortem/0001-acp-default-export-drops-inject.md)).
- **Product-visible plugins require a non-unit REAL-composition test.** Hand-built `ctx.plugin(...)` suites are insufficient. Boot test-only `cordis.yml` through the Loader and app/process; mock only external/nondeterministic boundaries and assert model-visible, durable, or user-visible output. Keep opt-ins out of shipped defaults. [Policy](../docs/testing.md).
- **Typed same-process service and plugin calls are contracts, not serialization boundaries.** Prefer readonly borrowed values; materialize or defensively validate only at parser/config, queued, model/tool JSON, durable/file, worker, process, or wire boundaries.
- **Initiator-owned private chains derive, then capture.** Under `ctx.agents.withInitiator()`, recover the Agent at each orchestration entry, derive `agent.session`, and let operation-local helpers close over it. Keep `Agent` and `Session` explicit at lifecycle, session-log, service, authority, worker/process, persistence, and wire interfaces; do not widen a leaf helper from `Session` to `Context` merely to hide a parameter ([rationale](../docs/rfc/implemented/architecture/2026-07-15-agent-initiator-scope.md)).
- **Represent one asynchronous operation with one lifecycle controller or transaction.** Separate readiness, cancellation, disposal, reservation, or sentinel state requires an independent owner or settlement boundary; otherwise fold it while preserving rollback, callback containment, and quiescence.
Naming notes:

6
packages/README.md
View File

@@ -8,7 +8,7 @@ Packages live at `packages/<group>/<pkg>/`; groups are containers, while names r
| Group | Role | Release expectation |
|---|---|---|
| [`core/`](core/README.md) | Product API spine: session, system-prompt, tools, agent, and the concrete loop | Product — stable surface |
| [`core/`](core/README.md) | Product API spine: sessions, prompts, tools, agent services, and the concrete loop | Product — stable surface |
| [`llm/`](llm/README.md) | LLM capability family: the abstract service + provider adapters | Product — stable surface |
| [`bash/`](bash/README.md) | Bash capability family: the executor seam, a local impl, and the model-facing tool | Product — stable surface |
| [`code-runtime/`](code-runtime/README.md) | Code-execution capability family: the abstract runtime seam for model-written programs + a worker-thread backend | Product — stable surface |
@@ -31,8 +31,8 @@ Packages live at `packages/<group>/<pkg>/`; groups are containers, while names r
| [`session-query/`](session-query/README.md) | Session retrieval: logical corpus, bounded reads, lineage, and event relationships | Product — stable surface |
| [`sdk/`](sdk/README.md) | Project SDK tooling | Product — stable surface |
| [`ui/`](ui/README.md) | Editor/client integration surfaces: ACP bridge, JSON-RPC SDK server, user-approval/user-interaction seams, ask-user tool | Product — stable surface |
| [`examples/`](examples/README.md) | Demo bundles (agent-spine + stdio/ACP/JSON-RPC bins) the leaves load | Support — example infra |
| [`support/`](support/README.md) | Support infrastructure (testkits, invariants, replay, Loader smokes, subagent mock) | Support — lower compatibility expectations |
| [`examples/`](examples/README.md) | Demo bundles (agent-spine + stdio/one-shot CLI/ACP/JSON-RPC bins) the leaves load | Support — example infra |
| [`support/`](support/README.md) | Support infrastructure (testkits, invariants, replay, Loader smokes) | Support — lower compatibility expectations |
| [`util/`](util/README.md) | Low-level zero-dependency utilities shared across groups (`Branded<B>`, Harness home/path helpers, timeout, retention) | Support — small, stable, harness-dep-free |
Groups distinguish product API from support infrastructure. New packages join an existing group; a new group updates its README and this table.

17
packages/compact/compact-basic/README.md
View File

@@ -8,13 +8,14 @@ This is the implementation tier of the compaction capability — see the [interf
This backend owns the compaction policy:
- **Measurement** — the singleton `ctx.tokenMeter` prices the provisional request envelope and current surface at one consumed-log revision. The current prompt and prefix override their logged values; the pre-step boundary reuses logged tools and call config.
- **Measurement** — the singleton `ctx.tokenMeter` prices the latest canonical logged envelope and current surface at one consumed-log revision. Post-step pressure therefore includes the actual system prompt, tools, prefix, routing, assistant completion, tool results, buffered context, and steering.
- **Retention** — compact the oldest whole surface units while preserving a recent tail and balanced tool-call/result cuts through the [`dsh-compact` boundary helpers](../compact/README.md#tool-pairing-boundaries). Turn boundaries do not protect old steps inside a runaway turn. An open indivisible tail declines until it closes; a single unit larger than the budget remains out of scope.
- **Convergence** — retry head-checkpoint compaction up to `compactionRetries`; reject a summary that does not shrink its source, and throw if retries cannot return below threshold.
- **Summarization** — a direct `llm/stream` call uses the configured provider/model pair and cap, falling back to the latest logged request target and then the agent target, without running the loop-only `agent/request` seam. The input transcript preserves non-text blocks as tagged placeholders; only returned text enters the checkpoint, excluding reasoning and tool calls that would leak private reasoning or create an orphaned call.
- **Framing** — the replacement user message marks established checkpoint context with `<compacted-summary>` tags. The raw summary remains on the provenance event, and later automatic cycles merge the prior checkpoint.
- **Lifecycle** — `compactRegion()` mutates `agent.session` and records its start, summary, replacement, and end. The serial `agent/pre-step` listener checks pressure before every step, outside an open step, so a tool-heavy turn remains compactable and the loop derives history once after mutation.
- **Failure handling** — an unmatched `compact/start` is an inert crash marker because no replacement landed. Recoverable failure records an error end and leaves the surface unchanged.
- **Lifecycle** — `compactRegion()` mutates `agent.session` and records its start, summary, replacement, and end. The serial `agent/post-step` listener checks pressure after successful output and tool work are durable but before `step/end`. Canonical provider overflow is handled through `agent/request-error` after the failed step closes.
- **Overflow recovery** — below-threshold overflow bypasses normal retention and attempts one maximal balanced head reduction while leaving the newest indivisible unit. Retry is authorized only when `surface.replaceGeneration` advances; no range, no replacement, recovery failure, an exhausted cap, cancellation, or an unknown/noncanonical error preserves the original provider failure.
- **Failure handling** — an unmatched `compact/start` is an inert crash marker because no replacement landed. A region failure records an error end and leaves the surface unchanged. Operational post-step failures warn and continue; overflow-recovery failure preserves the original provider error.
The protected `summarize()` method is the sole subclass hook. A template- or remote-summarizer subclass can override it while pressure, retention, provenance, shrink validation, and shadowed-token accounting stay on `ctx.tokenMeter`. The hook returns the summary blocks together with the call envelope it used (`{ summary, provider, model, maxTokens? }`), which is logged on `compact/summary`.
@@ -30,7 +31,8 @@ Every setting is optional. The pressure and retention policy applies to the toke
| `summarizationModel` | no (default `''`) | Set together with `summarizationProvider`; an empty pair resolves the latest logged request target, then the `AgentOptions` pair. |
| `maxTokens` | no (default `8192`) | Provider generation cap for the summarization call; may include reasoning tokens. |
| `compactionRetries` | no (default `1`) | Extra attempts after the first when pressure remains above threshold. |
| `auto` | no (default `true`) | Register the `agent/pre-step` automatic listener. Set `false` for manual-only. |
| `maxOverflowRetries` | no (default `1`) | Maximum retries after canonical context-window overflow; `0` disables recovery only. |
| `auto` | no (default `true`) | Register post-step pressure and overflow-recovery listeners. Set `false` for manual-only. |
## Usage
@@ -40,7 +42,7 @@ import { BasicCompactService } from '@deepseek-ai/dsh-compact-basic'
import TokenMeterService from '@deepseek-ai/dsh-token-meter'
export const name = 'compact-basic'
export const inject = ['llm']
export const inject = ['llm', 'tokenMeter']
export function apply(ctx: Context): void {
ctx.plugin(TokenMeterService)
@@ -54,7 +56,7 @@ Loading the plugin registers `ctx.compact`. With `auto: true` (the default) it c
### Conversation history
**What the model sees**: Before a step whose estimated envelope and history exceed the threshold, the conversation model receives the checkpoint preamble below, a blank line, `<compacted-summary>`, the data-dependent summary, and `</compacted-summary>`. This one checkpoint replaces the selected older range and is followed by the retained recent units.
**What the model sees**: After a successful step crosses the threshold, the next request receives the checkpoint preamble below, a blank line, `<compacted-summary>`, the data-dependent summary, and `</compacted-summary>`. Overflow recovery rebuilds the immediate retry from that replacement. This one checkpoint replaces the selected older range and is followed by the retained recent units.
**Token effect**: The replacement reduces future input history rather than appending a second copy. The summary remains until a later compaction replaces it; one oversized indivisible unit can still exceed the budget.
@@ -116,8 +118,9 @@ Rules:
## Known Limitations and Deferred Work
- **Pre-step sees a provisional request envelope** — the current prompt and prefix are exact, but routing and tool changes made later in `agent/request` are not logged yet. A router-only agent with no provisional provider/model pair skips that check.
- **Meter accuracy follows the fixed heuristic** — missing reusable provider usage falls back to character count plus structural overhead rather than exact tokenization.
- **Overflow classification is adapter-maintained** — provider wording can change; both DeepSeek adapters normalize currently recognized context-limit failures to `CONTEXT_WINDOW_EXCEEDED`.
- **Single-unit and envelope-only overflow remain outside surface compaction** — recovery cannot split one indivisible message/tool unit or shrink system/tools/prefix.
- **`compactRegion` requires an open turn** — a manual call on a fully-closed session throws ("no open turn") rather than compacting.
- **Summarization failure fails closed with full, over-budget history** — including truncation at the summarization `maxTokens`, which hidden reasoning tokens can consume; the auto path logs a warning and proceeds.
- **The summarization call has no transcript-snapshot coverage** — `dsh-llm-replay` derives calls from `assistant/chunk` events, so this chunk-less direct `ctx.llm.stream()` call cannot replay (named deferred replay infrastructure in [the seam RFC](../../../docs/rfc/implemented/feature/2026-06-18-compaction-capability-seam.md)).

52
packages/compact/compact-basic/src/automatic.ts
View File

@@ -1,52 +0,0 @@
/**
* Automatic pre-step pressure listener for compact-basic.
*
* @module @deepseek-ai/dsh-compact-basic/automatic
*/
import type { Context } from 'cordis'
import type { CompactionResult } from '@deepseek-ai/dsh-compact'
import type { Message } from '@deepseek-ai/dsh-llm'
import type { Agent } from '@deepseek-ai/dsh-agent'
interface AutomaticCompactor {
compactIfNeeded(
agent: Agent,
fullSystemPrompt: string,
sessionPrefix: readonly Message[],
signal: AbortSignal,
): Promise<CompactionResult | null>
}
/**
* Register the implementation-owned automatic compaction listener.
* @param ctx - context owning the listener effect and logger.
* @param service - compactor whose public methods remain dynamically dispatched.
*/
export function registerAutomaticCompaction(
ctx: Context,
service: AutomaticCompactor,
): void {
ctx.on('agent/pre-step', async (
agent: Agent,
_turn: number,
_step: number,
fullSystemPrompt: string,
sessionPrefix: readonly Message[],
signal: AbortSignal,
) => {
try {
const result = await service.compactIfNeeded(agent, fullSystemPrompt, sessionPrefix, signal)
if (result !== null) {
ctx.logger.info(
`compaction: shadowed ${result.shadowedSeqs.length} surface nodes `
+ `(seqs ${result.shadowedRange.start}-${result.shadowedRange.end}, `
+ `~${result.shadowedTokenCount} tokens)`,
)
}
} catch (error: unknown) {
const message = error instanceof Error ? error.message : String(error)
ctx.logger.warn(`compaction failed: ${message}; proceeding with full history`)
}
})
}

6
packages/compact/compact-basic/src/config.ts
View File

@@ -22,6 +22,7 @@ const BASIC_COMPACT_CONFIG_KEYS: ReadonlySet<string> = new Set([
'summarizationModel',
'maxTokens',
'compactionRetries',
'maxOverflowRetries',
'auto',
])
@@ -31,7 +32,8 @@ function validateConfigKeys(config: BasicCompactConfig): void {
if (!BASIC_COMPACT_CONFIG_KEYS.has(key)) {
throw new Error(
`BasicCompactConfig: unknown key "${key}" `
+ '(allowed: thresholdRatio, retainTokens, summarizationProvider, summarizationModel, maxTokens, compactionRetries, auto)',
+ '(allowed: thresholdRatio, retainTokens, summarizationProvider, summarizationModel, '
+ 'maxTokens, compactionRetries, maxOverflowRetries, auto)',
)
}
}
@@ -58,6 +60,7 @@ export function resolveConfig(
summarizationModel: config.summarizationModel ?? '',
maxTokens: config.maxTokens ?? 8192,
compactionRetries: config.compactionRetries ?? 1,
maxOverflowRetries: config.maxOverflowRetries ?? 1,
auto: config.auto ?? true,
}
@@ -71,6 +74,7 @@ export function resolveConfig(
}
assertPositiveInteger('maxTokens', resolved.maxTokens)
assertNonNegativeInteger('compactionRetries', resolved.compactionRetries)
assertNonNegativeInteger('maxOverflowRetries', resolved.maxOverflowRetries)
if (typeof resolved.summarizationProvider !== 'string') {
throw new Error('BasicCompactConfig: summarizationProvider must be a string')
}

141
packages/compact/compact-basic/src/index.ts
View File

@@ -7,12 +7,11 @@
import { Context } from 'cordis'
import z from 'schemastery'
import { CompactService } from '@deepseek-ai/dsh-compact'
import type { CompactionResult } from '@deepseek-ai/dsh-compact'
import { canonicalHeader } from '@deepseek-ai/dsh-session'
import type { EpochHeader, Session } from '@deepseek-ai/dsh-session'
import type { ContentBlock, Message } from '@deepseek-ai/dsh-llm'
import type { CompactionResult, CompactionTrigger } from '@deepseek-ai/dsh-compact'
import type { Session } from '@deepseek-ai/dsh-session'
import { CONTEXT_WINDOW_EXCEEDED_CODE, assertNever } from '@deepseek-ai/dsh-llm'
import type { ContentBlock } from '@deepseek-ai/dsh-llm'
import type { Agent } from '@deepseek-ai/dsh-agent'
import { registerAutomaticCompaction } from './automatic.ts'
import { resolveConfig } from './config.ts'
import { compactSurfaceRegion, selectCompactableRange } from './region.ts'
import { summarizeWithLlm } from './summarizer.ts'
@@ -26,35 +25,10 @@ export type {
ResolvedConfig,
} from './types.ts'
/** Resolve the latest actual routed provider/model, then the complete agent fallback pair. */
function effectiveTarget(agent: Agent): { provider: string; model: string } | undefined {
const latest = agent.session.requestHeader()?.config
if (latest !== undefined) return { provider: latest.provider, model: latest.model }
const { provider, model } = agent.options
if (provider === undefined || provider.length === 0 || model === undefined || model.length === 0) {
return undefined
}
return { provider, model }
}
/**
* Build the provisional pre-step request envelope. Prompt and prefix are exact;
* tools and non-model call config come from the latest logged request because
* later request middleware has not run yet.
*/
function provisionalHeader(
target: { provider: string; model: string },
session: Session,
fullSystemPrompt: string,
sessionPrefix: readonly Message[],
): EpochHeader {
const latest = session.requestHeader()
return canonicalHeader({
config: latest === undefined ? target : { ...latest.config, ...target },
...fullSystemPrompt.length === 0 ? {} : { system: fullSystemPrompt },
...latest?.tools === undefined ? {} : { tools: latest.tools },
...sessionPrefix.length === 0 ? {} : { messagePrefix: [...sessionPrefix] },
})
/** Resolve the exact model durably routed for the latest provider request. */
function routedModel(session: Session): string | undefined {
const model = session.requestHeader()?.config.model
return model === undefined || model.length === 0 ? undefined : model
}
/**
@@ -75,6 +49,7 @@ export class BasicCompactService extends CompactService {
summarizationModel: z.string().default(''),
maxTokens: z.number().step(1).min(1).default(8192),
compactionRetries: z.number().step(1).min(0).default(1),
maxOverflowRetries: z.number().step(1).min(0).default(1),
auto: z.boolean().default(true),
})
@@ -84,7 +59,63 @@ export class BasicCompactService extends CompactService {
constructor(ctx: Context, config: BasicCompactConfig = {}) {
super(ctx)
this.config = resolveConfig(config, ctx.tokenMeter)
if (this.config.auto) registerAutomaticCompaction(ctx, this)
if (this.config.auto) this._registerAutomaticCompaction()
}
/**
* Register the automatic post-step pressure and context-overflow recovery
* listeners. `compactIfNeeded` stays dynamically dispatched so subclass
* overrides are honored at event time.
*/
private _registerAutomaticCompaction(): void {
const { ctx } = this
const logResult = (result: CompactionResult, trigger: string): void => {
ctx.logger.info(
`compaction (${trigger}): shadowed ${result.shadowedSeqs.length} surface nodes `
+ `(seqs ${result.shadowedRange.start}-${result.shadowedRange.end}, `
+ `~${result.shadowedTokenCount} tokens)`,
)
}
ctx.on('agent/post-step', async (
agent: Agent,
_turn: number,
_step: number,
signal: AbortSignal,
) => {
if (signal.aborted) return
try {
const result = await this.compactIfNeeded(agent, 'pressure', signal)
if (result !== null) logResult(result, 'post-step pressure')
} catch (error: unknown) {
const message = error instanceof Error ? error.message : String(error)
ctx.logger.warn(`post-step compaction failed: ${message}; continuing the turn`)
}
})
ctx.on('agent/request-error', async (agent, _turn, _step, error, retryAttempt, signal, next) => {
if (error.code !== CONTEXT_WINDOW_EXCEEDED_CODE
|| retryAttempt >= this.config.maxOverflowRetries
|| signal.aborted) return next()
let generation: number
let result: CompactionResult | null
try {
generation = agent.session.surface.replaceGeneration
result = await this.compactIfNeeded(agent, 'context-overflow', signal)
} catch (recoveryError: unknown) {
const message = recoveryError instanceof Error ? recoveryError.message : String(recoveryError)
ctx.logger.warn(
`context-overflow compaction failed: ${message}; preserving the original request error`,
)
return next()
}
// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition -- signal can abort while compaction is awaited.
if (signal.aborted || result === null
|| agent.session.surface.replaceGeneration <= generation) return next()
logResult(result, 'context overflow recovery')
return { action: 'retry' }
})
}
/**
@@ -104,27 +135,39 @@ export class BasicCompactService extends CompactService {
}
/**
* Check replayed pressure for the provisional pre-step envelope and compact
* a tool-balanced head until it falls below the service-wide threshold.
* A genuinely model-less router-first step skips this provisional check.
* @param agent - agent whose session and provisional provider/model are measured.
* @param fullSystemPrompt - current assembled system prompt override.
* @param sessionPrefix - current request-only prefix override.
* @param signal - live step cancellation signal forwarded to summarization.
* Compact for replayed post-step pressure or one provider-confirmed context
* overflow. Both triggers price the latest durable routed request envelope;
* overflow bypasses the normal threshold and retained-tail policy so it can
* force one useful balanced reduction.
* @param agent - agent whose latest durable routed request is measured.
* @param trigger - normal post-step pressure or context-overflow recovery.
* @param signal - live turn cancellation signal forwarded to summarization.
* @returns the latest compaction result, or `null` when no check/work applies.
*/
override async compactIfNeeded(
agent: Agent,
fullSystemPrompt: string,
sessionPrefix: readonly Message[],
trigger: CompactionTrigger,
signal: AbortSignal,
): Promise<CompactionResult | null> {
const target = effectiveTarget(agent)
if (target === undefined) return null
const model = routedModel(agent.session)
if (model === undefined) return null
const meter = this.ctx.tokenMeter
const requestHeader = provisionalHeader(target, agent.session, fullSystemPrompt, sessionPrefix)
switch (trigger) {
case 'context-overflow': {
const measurement = meter.measure(agent.session)
const range = selectCompactableRange(agent.session, measurement, 0)
if (range === null) return null
return this.compactRegion(range.start, range.end, agent, signal)
}
case 'pressure':
break
/* v8 ignore next -- closed-union exhaustiveness guard */
default:
assertNever(trigger, 'compaction trigger')
}
const threshold = Math.floor(meter.contextWindow * this.config.thresholdRatio)
let measurement = meter.measure(agent.session, requestHeader)
let measurement = meter.measure(agent.session)
if (measurement.totalTokens < threshold) return null
let result: CompactionResult | null = null
@@ -137,7 +180,7 @@ export class BasicCompactService extends CompactService {
break
}
result = await this.compactRegion(range.start, range.end, agent, signal)
measurement = meter.measure(agent.session, requestHeader)
measurement = meter.measure(agent.session)
if (measurement.totalTokens < threshold) return result
}

4
packages/compact/compact-basic/src/summarizer.ts
View File

@@ -119,8 +119,8 @@ export async function summarizeWithLlm(
}
return {
summary,
provider: target.provider,
model: target.model,
provider: options.provider,
model: options.model,
maxTokens: config.maxTokens,
}
}

5
packages/compact/compact-basic/src/types.ts
View File

@@ -18,7 +18,9 @@ export interface BasicCompactConfig {
maxTokens?: number
/** Extra attempts after the first compaction when pressure remains above threshold. Defaults to `1`. */
compactionRetries?: number
/** Enable the automatic `agent/pre-step` pressure listener. Defaults to `true`. */
/** Maximum retries after canonical context overflow; `0` disables recovery. Defaults to `1`. */
maxOverflowRetries?: number
/** Enable automatic post-step pressure and overflow-recovery listeners. Defaults to `true`. */
auto?: boolean
}
@@ -30,5 +32,6 @@ export interface ResolvedConfig {
readonly summarizationModel: string
readonly maxTokens: number
readonly compactionRetries: number
readonly maxOverflowRetries: number
readonly auto: boolean
}

376
packages/compact/compact-basic/tests/compact-basic.spec.ts
View File

@@ -3,10 +3,11 @@ import { Context } from 'cordis'
import BasicCompactService from '@deepseek-ai/dsh-compact-basic'
import type { BasicCompactConfig } from '@deepseek-ai/dsh-compact-basic'
import { selectCompactableRange } from '@deepseek-ai/dsh-compact-basic/src/region.ts'
import { toolPairingBalancedAfter, toolPairingBalancedBefore } from '@deepseek-ai/dsh-compact'
import { resolveConfig } from '@deepseek-ai/dsh-compact-basic/src/config.ts'
import type { CompactionResult } from '@deepseek-ai/dsh-compact'
import LlmService, { CallId, LlmAdapter } from '@deepseek-ai/dsh-llm'
import type { ContentBlock, GenerateOptions, Message, StreamChunk } from '@deepseek-ai/dsh-llm'
import LlmService, { CallId, CONTEXT_WINDOW_EXCEEDED_CODE, LlmAdapter } from '@deepseek-ai/dsh-llm'
import type { ContentBlock, GenerateOptions, StreamChunk } from '@deepseek-ai/dsh-llm'
import { Session, SessionId } from '@deepseek-ai/dsh-session'
import TokenMeterService from '@deepseek-ai/dsh-token-meter'
import type { Agent } from '@deepseek-ai/dsh-agent'
@@ -34,6 +35,12 @@ function conversation(turns = 4, text = 'fixture '.repeat(40).trim()): Session {
source: { kind: 'user' },
}, { surfaceOp: 'append' })
session.append('step/start', { turn, step: 1 })
if (turn === 1) {
session.append('request/header', {
header: { config: { provider: MODEL, model: MODEL } },
reason: 'initial',
})
}
session.append('assistant/message', {
provenance: { provider: MODEL, model: MODEL },
turn,
@@ -60,6 +67,12 @@ function toolConversation(): Session {
source: { kind: 'user' },
}, { surfaceOp: 'append' })
session.append('step/start', { turn, step: 1 })
if (turn === 1) {
session.append('request/header', {
header: { config: { provider: MODEL, model: MODEL } },
reason: 'initial',
})
}
session.append('assistant/message', {
provenance: { provider: MODEL, model: MODEL },
turn,
@@ -119,11 +132,10 @@ function service(
async function compactIfNeeded(
compact: BasicCompactService,
session: Session,
trigger: 'pressure' | 'context-overflow' = 'pressure',
model: string | undefined = MODEL,
system = '',
prefix: readonly Message[] = [],
): Promise<CompactionResult | null> {
return compact.compactIfNeeded(agent(session, model), system, prefix, SIGNAL)
return compact.compactIfNeeded(agent(session, model), trigger, SIGNAL)
}
describe('compact configuration and defaults', () => {
@@ -138,6 +150,7 @@ describe('compact configuration and defaults', () => {
summarizationModel: '',
maxTokens: 8192,
compactionRetries: 1,
maxOverflowRetries: 1,
auto: true,
})
expect(Object.isFrozen(resolved)).toBe(true)
@@ -167,6 +180,7 @@ describe('compact configuration and defaults', () => {
const bad = [
[{ maxTokens: 0 }, /maxTokens/],
[{ compactionRetries: -1 }, /compactionRetries/],
[{ maxOverflowRetries: -1 }, /maxOverflowRetries/],
[{ auto: 'yes' }, /auto must be a boolean/],
[{ summarizationProvider: 1 }, /summarizationProvider must be a string/],
[{ summarizationModel: 1 }, /summarizationModel must be a string/],
@@ -193,19 +207,58 @@ describe('pressure measurement and retention', () => {
retainTokens: 180,
}
it('skips the provisional check only when no routed or fallback model exists', async () => {
it('skips when no durable routed model exists instead of using AgentOptions fallback', async () => {
const compact = service(compactConfig)
const session = conversation()
expect(await compact.compactIfNeeded(agent(session), '', [], SIGNAL)).toBeNull()
const session = new Session(SessionId('headerless'))
session.append('turn/start', { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } })
await expect(compact.compactIfNeeded(agent(session, MODEL), 'pressure', SIGNAL))
.resolves.toBeNull()
expect(compact.calls).toHaveLength(0)
})
it('meters any routed model without profile resolution', async () => {
const compact = service(compactConfig)
await expect(compactIfNeeded(compact, conversation(), 'unlisted-model'))
const session = conversation()
session.append('request/header', {
header: { config: { provider: 'unlisted-provider', model: 'unlisted-model' } },
reason: 'resume',
})
await expect(compactIfNeeded(compact, session))
.resolves.not.toBeNull()
})
it('declines forced overflow when the whole surface is one indivisible tool pair', async () => {
const compact = service(compactConfig)
const session = new Session(SessionId('single-tool-pair'))
const callId = CallId('single-call')
session.append('turn/start', { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } })
session.append('step/start', { turn: 1, step: 1 })
session.append('request/header', {
header: { config: { provider: MODEL, model: MODEL } },
reason: 'initial',
})
session.append('assistant/message', {
provenance: { provider: MODEL, model: MODEL },
turn: 1,
step: 1,
content: [{ type: 'tool-call', id: callId, name: 'read', arguments: '{}' }],
}, { surfaceOp: 'append' })
session.append('tool/call', { turn: 1, step: 1, callId, name: 'read', arguments: '{}' })
session.append('tool/result', {
turn: 1,
step: 1,
callId,
content: [{ type: 'text', text: 'result' }],
isError: false,
}, { surfaceOp: 'append' })
session.append('step/end', { turn: 1, step: 1 })
const generation = session.surface.replaceGeneration
await expect(compactIfNeeded(compact, session, 'context-overflow')).resolves.toBeNull()
expect(session.surface.replaceGeneration).toBe(generation)
expect(session.events.some(event => event.type === 'compact/start')).toBe(false)
})
it('does nothing below threshold and compacts a priced head above threshold', async () => {
const compact = service(compactConfig)
expect(await compactIfNeeded(compact, conversation(2))).toBeNull()
@@ -217,26 +270,31 @@ describe('pressure measurement and retention', () => {
expect(session.surface.nodes.length).toBeLessThan(8)
})
it('counts the current prompt and request prefix without putting either on the surface', async () => {
it('counts the durable routed request envelope without putting its prefix on the surface', async () => {
const compact = service({
auto: false,
thresholdRatio: 0.7,
thresholdRatio: 0.9,
retainTokens: 50,
})
const session = conversation(2, 'x'.repeat(200))
const session = conversation(2, 'x'.repeat(600))
expect(await compactIfNeeded(compact, session)).toBeNull()
const prefix: Message[] = [{
role: 'user',
content: [{ type: 'text', text: 'p'.repeat(1_000) }],
}]
const result = await compactIfNeeded(compact, session, MODEL, 's'.repeat(1_000), prefix)
const prefix = [{ role: 'user' as const, content: [{ type: 'text' as const, text: 'p'.repeat(600) }] }]
session.append('request/header', {
header: {
config: { provider: MODEL, model: MODEL },
system: 's'.repeat(600),
messagePrefix: prefix,
},
reason: 'resume',
})
const result = await compactIfNeeded(compact, session)
expect(result).not.toBeNull()
expect(prefix).toHaveLength(1)
expect(session.events.some(event => event.type === 'context/message')).toBe(false)
})
it('uses the latest logged routed model in the provisional request envelope', async () => {
it('uses the latest logged request envelope without an AgentOptions override', async () => {
const ctx = createContext()
const compact = service({
auto: false,
@@ -250,19 +308,28 @@ describe('pressure measurement and retention', () => {
})
const measure = vi.spyOn(ctx.tokenMeter, 'measure')
const result = await compactIfNeeded(compact, session, 'fallback')
const result = await compactIfNeeded(compact, session, 'pressure', 'fallback')
expect(result).not.toBeNull()
expect(measure.mock.calls[0]?.[1]?.config.provider).toBe('actual')
expect(measure.mock.calls[0]?.[1]?.config.model).toBe('actual')
expect(session.requestHeader()?.config.model).toBe('actual')
expect(measure.mock.calls[0]).toEqual([session])
})
it('declines when envelope pressure is high but the surface has no compactable range', async () => {
const compact = service(compactConfig)
const empty = new Session(SessionId('empty'))
expect(await compactIfNeeded(compact, empty, MODEL, 'x'.repeat(100_000))).toBeNull()
empty.append('turn/start', { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } })
empty.append('request/header', {
header: { config: { provider: MODEL, model: MODEL }, system: 'x'.repeat(100_000) },
reason: 'initial',
})
expect(await compactIfNeeded(compact, empty)).toBeNull()
const retained = conversation(1)
expect(await compactIfNeeded(compact, retained, MODEL, 'x'.repeat(100_000))).toBeNull()
retained.append('request/header', {
header: { config: { provider: MODEL, model: MODEL }, system: 'x'.repeat(100_000) },
reason: 'resume',
})
expect(await compactIfNeeded(compact, retained)).toBeNull()
})
it('uses one unified measurement for each pressure-and-retention decision', async () => {
@@ -544,7 +611,20 @@ describe('compaction region transaction', () => {
it('lets a model-independent custom summarizer compact without a conversation model', async () => {
const compact = service()
const session = conversation(1)
const session = new Session(SessionId('model-less-region'))
session.append('turn/start', { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } })
session.append('user/message', {
content: [{ type: 'text', text: 'history '.repeat(100) }],
source: { kind: 'user' },
}, { surfaceOp: 'append' })
session.append('step/start', { turn: 1, step: 1 })
session.append('assistant/message', {
provenance: { provider: 'historical', model: 'historical' },
turn: 1,
step: 1,
content: [{ type: 'text', text: 'answer '.repeat(100) }],
}, { surfaceOp: 'append' })
session.append('step/end', { turn: 1, step: 1 })
const nodes = session.surface.nodes
await expect(compact.compactRegion(
nodes[0]!,
@@ -650,6 +730,28 @@ describe('default one-shot summarizer', () => {
expect(adapter.lastOptions?.model).toBe('routed')
})
it('records the model actually dispatched after one-shot stream routing', async () => {
const { ctx, compact } = await summarizerHarness([{ type: 'text', text: 'unused' }])
const routedAdapter = new ScriptedAdapter([{ type: 'text', text: 'routed summary' }])
ctx.llm.registerAdapter(['routed-summary-provider'], routedAdapter)
ctx.on('llm/stream', (options, next) => {
options.provider = 'routed-summary-provider'
options.model = 'routed-summary-model'
return next()
})
const session = conversation(3, 'large history '.repeat(500))
const nodes = session.surface.nodes
await compact.compactRegion(nodes[0]!, nodes[3]!, agent(session, MODEL), SIGNAL)
expect(session.events.findLast(event => event.type === 'compact/summary')?.data).toMatchObject({
summary: [{ type: 'text', text: 'routed summary' }],
provider: 'routed-summary-provider',
model: 'routed-summary-model',
})
expect(routedAdapter.lastOptions?.provider).toBe('routed-summary-provider')
expect(routedAdapter.lastOptions?.model).toBe('routed-summary-model')
})
it('fails clearly when no complete summarization target can be resolved', async () => {
const ctx = new Context()
await ctx.plugin(LlmService)
@@ -688,26 +790,57 @@ describe('default one-shot summarizer', () => {
})
describe('automatic listener and loader composition', () => {
function preStep(ctx: Context, owner: Agent): Promise<unknown> {
return ctx.serial('agent/pre-step', owner, 1, 1, '', [], SIGNAL)
function postStep(ctx: Context, owner: Agent, signal = SIGNAL): Promise<unknown> {
return ctx.serial('agent/post-step', owner, 1, 1, signal)
}
it('compacts above threshold and remains idle below it', async () => {
function recover(
ctx: Context,
owner: Agent,
error: Error & { code?: string },
retryAttempt = 0,
signal = SIGNAL,
next: () => Promise<{ action: 'fail' | 'retry' }> = () => Promise.resolve({ action: 'fail' }),
): Promise<{ action: 'fail' | 'retry' }> {
return ctx.waterfall('agent/request-error', owner, 1, 1, error, retryAttempt, signal, next)
}
function overflow(message = 'provider overflow'): Error & { code: string } {
return Object.assign(new Error(message), { code: CONTEXT_WINDOW_EXCEEDED_CODE })
}
it('compacts post-step above threshold using the durable routed model and remains idle below it', async () => {
const ctx = createContext()
const compact = new TestCompactService(ctx, {
thresholdRatio: 0.5,
retainTokens: 180,
})
const pressured = conversation(4)
await preStep(ctx, agent(pressured, MODEL))
await postStep(ctx, agent(pressured, 'unconfigured-agent-fallback'))
expect(pressured.events.some(event => event.type === 'compact/summary')).toBe(true)
const small = conversation(1)
await preStep(ctx, agent(small, MODEL))
await postStep(ctx, agent(small, MODEL))
expect(small.events.some(event => event.type === 'compact/start')).toBe(false)
expect(compact.calls).toHaveLength(1)
})
it('skips post-step pressure when the step signal is already aborted', async () => {
const ctx = createContext()
const compact = new TestCompactService(ctx, {
thresholdRatio: 0.5,
retainTokens: 180,
})
const pressured = conversation(4)
const compactIfNeeded = vi.spyOn(compact, 'compactIfNeeded')
await expect(postStep(ctx, agent(pressured, MODEL), AbortSignal.abort('step aborted')))
.resolves.toBeUndefined()
expect(compactIfNeeded).not.toHaveBeenCalled()
expect(pressured.events.some(event => event.type === 'compact/start')).toBe(false)
})
it('warns and continues after operational failures, including non-Errors', async () => {
const ctx = createContext()
const warnings: string[] = []
@@ -719,12 +852,187 @@ describe('automatic listener and loader composition', () => {
compact.error = 'temporary failure'
const session = conversation(4)
await expect(preStep(ctx, agent(session, MODEL))).resolves.toBeUndefined()
await expect(postStep(ctx, agent(session, MODEL))).resolves.toBeUndefined()
expect(warnings).toContainEqual(expect.stringContaining('temporary failure'))
expect(session.events.some(event => event.type === 'compact/summary')).toBe(false)
})
it('auto:false installs no listener', async () => {
it('force-compacts below normal pressure for canonical overflow and retries only after replacement', async () => {
const ctx = createContext(10_000)
void new TestCompactService(ctx, {
thresholdRatio: 1,
retainTokens: 900,
})
const session = conversation(3)
const beforeGeneration = session.surface.replaceGeneration
const retainedSeq = session.surface.nodes.at(-1)!
const threshold = 10_000
expect(ctx.tokenMeter.measure(session).totalTokens).toBeLessThan(threshold)
const decision = await recover(ctx, agent(session, 'unconfigured-agent-fallback'), overflow())
expect(decision).toEqual({ action: 'retry' })
expect(session.surface.replaceGeneration).toBe(beforeGeneration + 1)
expect(session.events.some(event => event.type === 'compact/summary')).toBe(true)
expect(session.surface.nodes).toContain(retainedSeq)
})
it('preserves the newest whole tool-call/result pair during forced overflow compaction', async () => {
const ctx = createContext()
void new TestCompactService(ctx, {
thresholdRatio: 1,
retainTokens: 90,
})
const session = toolConversation()
const newestAssistant = session.surface.nodes.at(-2)!
const newestResult = session.surface.nodes.at(-1)!
expect(await recover(ctx, agent(session, MODEL), overflow())).toEqual({ action: 'retry' })
const currentAssistant = session.surface.nodes.find(node => node === newestAssistant)
const currentResult = session.surface.nodes.find(node => node === newestResult)
expect(currentAssistant).toBeDefined()
expect(currentResult).toBeDefined()
expect(toolPairingBalancedBefore(session, currentAssistant!)).toBe(true)
expect(toolPairingBalancedAfter(session, currentResult!)).toBe(true)
})
it('does not retry when a backend reports success without replacing the surface', async () => {
const ctx = createContext()
const compact = new TestCompactService(ctx)
const session = conversation(2)
const fakeResult: CompactionResult = {
startSeq: 1,
summarySeq: 2,
endSeq: 3,
summary: [{ type: 'text', text: 'fake' }],
shadowedRange: { start: 1, end: 2 },
shadowedSeqs: [1, 2],
shadowedTokenCount: 10,
}
vi.spyOn(compact, 'compactIfNeeded').mockResolvedValue(fakeResult)
expect(await recover(ctx, agent(session, MODEL), overflow())).toEqual({ action: 'fail' })
expect(session.surface.replaceGeneration).toBe(0)
})
it('delegates downstream exactly once when no replacement is available', async () => {
const ctx = createContext()
const compact = new TestCompactService(ctx)
vi.spyOn(compact, 'compactIfNeeded').mockResolvedValue(null)
const downstream = new Error('downstream recovery failed')
let calls = 0
await expect(recover(
ctx,
agent(conversation(2), MODEL),
overflow(),
0,
SIGNAL,
() => {
calls += 1
return Promise.reject(downstream)
},
)).rejects.toBe(downstream)
expect(calls).toBe(1)
})
it('preserves the original provider error when recovery throws', async () => {
const ctx = createContext()
const warnings: string[] = []
ctx.logger.warn = ((message: string) => void warnings.push(message)) as typeof ctx.logger.warn
const compact = new TestCompactService(ctx)
compact.error = new Error('summary unavailable')
const original = overflow('original provider overflow')
expect(await recover(ctx, agent(conversation(3), MODEL), original)).toEqual({ action: 'fail' })
expect(original).toMatchObject({
message: 'original provider overflow',
code: CONTEXT_WINDOW_EXCEEDED_CODE,
})
expect(warnings).toContainEqual(expect.stringContaining('preserving the original request error'))
})
it('delegates once when overflow recovery throws a non-Error value', async () => {
const ctx = createContext()
const warnings: string[] = []
ctx.logger.warn = ((message: string) => void warnings.push(message)) as typeof ctx.logger.warn
const compact = new TestCompactService(ctx)
compact.error = 'non-error recovery failure'
const session = conversation(3)
const generation = session.surface.replaceGeneration
const original = overflow('original provider failure')
let delegations = 0
const decision = await recover(ctx, agent(session, MODEL), original, 0, SIGNAL, () => {
delegations += 1
return Promise.resolve({ action: 'fail' })
})
expect(decision).toEqual({ action: 'fail' })
expect(delegations).toBe(1)
expect(session.surface.replaceGeneration).toBe(generation)
expect(original).toMatchObject({
message: 'original provider failure',
code: CONTEXT_WINDOW_EXCEEDED_CODE,
})
expect(warnings).toContainEqual(expect.stringContaining('non-error recovery failure'))
})
it('recovers an overflow for an unlisted routed model', async () => {
const ctx = createContext()
void new TestCompactService(ctx)
const session = conversation(2)
session.append('request/header', {
header: { config: { provider: 'unknown-routed-provider', model: 'unknown-routed-model' } },
reason: 'resume',
})
expect(await recover(ctx, agent(session, MODEL), overflow('unlisted-model overflow')))
.toEqual({ action: 'retry' })
})
it('honors retry caps, non-context failures, and cancellation', async () => {
const ctx = createContext()
const compact = new TestCompactService(ctx, { maxOverflowRetries: 1 })
const compactSpy = vi.spyOn(compact, 'compactIfNeeded')
const owner = agent(conversation(3), MODEL)
expect(await recover(ctx, owner, Object.assign(new Error('rate limit'), { code: 'RATE_LIMIT' })))
.toEqual({ action: 'fail' })
expect(await recover(ctx, owner, overflow(), 1)).toEqual({ action: 'fail' })
const controller = new AbortController()
controller.abort('cancelled')
expect(await recover(ctx, owner, overflow(), 0, controller.signal)).toEqual({ action: 'fail' })
expect(compactSpy).not.toHaveBeenCalled()
})
it('does not retry when cancellation lands during an awaited compaction', async () => {
const ctx = createContext()
const compact = new TestCompactService(ctx)
const controller = new AbortController()
compact.mutateDuringSummary = () => { controller.abort('cancelled during summary') }
const session = conversation(3)
const generation = session.surface.replaceGeneration
expect(await recover(ctx, agent(session, MODEL), overflow(), 0, controller.signal))
.toEqual({ action: 'fail' })
expect(session.surface.replaceGeneration).toBe(generation + 1)
})
it('maxOverflowRetries:0 disables recovery without disabling post-step pressure', async () => {
const ctx = createContext()
void new TestCompactService(ctx, {
maxOverflowRetries: 0,
thresholdRatio: 0.5,
retainTokens: 180,
})
const session = conversation(4)
await postStep(ctx, agent(session, MODEL))
const summaries = session.events.filter(event => event.type === 'compact/summary').length
expect(summaries).toBe(1)
expect(await recover(ctx, agent(session, MODEL), overflow())).toEqual({ action: 'fail' })
expect(session.events.filter(event => event.type === 'compact/summary')).toHaveLength(summaries)
})
it('auto:false installs neither automatic listener', async () => {
const ctx = createContext()
void new TestCompactService(ctx, {
auto: false,
@@ -732,8 +1040,9 @@ describe('automatic listener and loader composition', () => {
retainTokens: 180,
})
const session = conversation(4)
await preStep(ctx, agent(session, MODEL))
await postStep(ctx, agent(session, MODEL))
expect(session.events.some(event => event.type === 'compact/start')).toBe(false)
expect(await recover(ctx, agent(session, MODEL), overflow())).toEqual({ action: 'fail' })
})
it('loads and disposes the real zero-config service stack', async () => {
@@ -761,7 +1070,8 @@ describe('automatic listener and loader composition', () => {
await fiber.dispose()
const session = conversation(4)
await preStep(ctx, agent(session, MODEL))
await postStep(ctx, agent(session, MODEL))
expect(session.events.some(event => event.type === 'compact/start')).toBe(false)
expect(await recover(ctx, agent(session, MODEL), overflow())).toEqual({ action: 'fail' })
})
})

173
packages/compact/compact-basic/tests/compact-loop-repro.spec.ts
View File

@@ -1,6 +1,7 @@
import { describe, expect, it } from 'vitest'
import { Context } from 'cordis'
import { toolPairingBalancedAfter, toolPairingBalancedBefore } from '@deepseek-ai/dsh-compact'
import { CONTEXT_WINDOW_EXCEEDED_CODE, LlmError } from '@deepseek-ai/dsh-llm'
import type { ContentBlock, GenerateOptions, StreamChunk } from '@deepseek-ai/dsh-llm'
import { CallId, LlmAdapter } from '@deepseek-ai/dsh-llm'
import { defineTool } from '@deepseek-ai/dsh-tools'
@@ -55,6 +56,45 @@ class StepwiseToolAdapter extends LlmAdapter {
}
}
/** First conversation request overflows, then the rebuilt retry succeeds. */
class OverflowRecoveryAdapter extends LlmAdapter {
readonly conversationRequests: GenerateOptions[] = []
readonly summaryRequests: GenerateOptions[] = []
constructor(private readonly delivery: 'thrown' | 'in-band') {
super()
}
override async * stream(options: GenerateOptions): AsyncIterable<StreamChunk> {
if (options.system?.includes('You are a compaction engine')) {
this.summaryRequests.push(options)
yield { type: 'block-start', index: 0, blockType: 'text' }
yield { type: 'block-end', index: 0, block: { type: 'text', text: 'RECOVERY CHECKPOINT' } }
yield { type: 'finish', reason: { kind: 'stop' } }
return
}
this.conversationRequests.push(options)
if (this.conversationRequests.length === 1) {
if (this.delivery === 'thrown') {
throw new LlmError('request too large for model context', CONTEXT_WINDOW_EXCEEDED_CODE)
}
yield {
type: 'finish',
reason: {
kind: 'error',
message: 'request too large for model context',
code: CONTEXT_WINDOW_EXCEEDED_CODE,
},
}
return
}
yield { type: 'block-start', index: 0, blockType: 'text' }
yield { type: 'block-end', index: 0, block: { type: 'text', text: 'recovered' } }
yield { type: 'finish', reason: { kind: 'stop' } }
}
}
async function harness(toolSteps: number): Promise<{ ctx: Context; compact: ReproCompactService }> {
const ctx = new Context()
await mountAgentLoopTestDependencies(ctx)
@@ -95,6 +135,54 @@ function waitForIdle(ctx: Context, agent: Agent): Promise<void> {
}
describe('CBR-001: a real-loop checkpoint is a valid boundary on both sides', () => {
it('uses the model actually routed by agent/request for post-step pressure', async () => {
const { ctx } = await harness(8)
ctx.on('agent/request', async (_agent, _turn, _step, config) => ({ ...config, provider: 'mock', model: 'mock' }))
try {
const agent = ctx.agentLoop.create(SessionId('routed-pressure'), {
provider: 'unconfigured-agent-fallback',
model: 'unconfigured-agent-fallback',
})
agent.send([{ type: 'text', text: 'do a routed multi-step task' }])
await waitForIdle(ctx, agent)
expect(agent.session.requestHeader()?.config.model).toBe('mock')
expect(agent.session.events.some(event => event.type === 'compact/summary')).toBe(true)
expect(agent.session.events.at(-1)).toMatchObject({
type: 'turn/end',
data: { reason: { kind: 'completed' } },
})
} finally {
await ctx.fiber.dispose()
}
})
it('runs automatic pressure after the current tool result and before step/end', async () => {
const { ctx } = await harness(8)
try {
const agent = ctx.agentLoop.create(SessionId('post-step-order'), { provider: 'mock', model: 'mock' })
agent.send([{ type: 'text', text: 'do tool work' }])
await waitForIdle(ctx, agent)
const events = [...agent.session.events]
const compactStart = events.find(event => event.type === 'compact/start')
expect(compactStart).toBeDefined()
const precedingResult = events.findLast(event =>
event.type === 'tool/result' && event.seq < compactStart!.seq,
)
if (precedingResult?.type !== 'tool/result') throw new Error('expected a durable tool result before compaction')
const stepEnd = events.find(event =>
event.type === 'step/end'
&& event.data.step === precedingResult.data.step
&& event.seq > compactStart!.seq,
)
expect(precedingResult.seq).toBeLessThan(compactStart!.seq)
expect(compactStart!.seq).toBeLessThan(stepEnd!.seq)
} finally {
await ctx.fiber.dispose()
}
})
it('the head checkpoint the loop lands is a balanced cut on both sides', async () => {
const { ctx } = await harness(8)
try {
@@ -127,3 +215,88 @@ describe('CBR-001: a real-loop checkpoint is a valid boundary on both sides', ()
}
})
})
describe('context-overflow recovery across the real loop and compact-basic', () => {
it.each(['thrown', 'in-band'] as const)(
'force-compacts a %s overflow between failed and retry steps',
async (delivery) => {
const ctx = new Context()
const adapter = new OverflowRecoveryAdapter(delivery)
await mountAgentLoopTestDependencies(ctx)
await ctx.plugin(Invariants)
await ctx.plugin(AgentLoop, { agents: [] })
await ctx.plugin(TokenMeterService, { contextWindow: 128 })
ctx.llm.registerAdapter(['mock'], adapter)
ctx.on('agent/request', async (_agent, _turn, _step, config) => ({ ...config, provider: 'mock', model: 'mock' }))
await ctx.plugin(BasicCompactService, {
thresholdRatio: 1,
retainTokens: 100,
maxTokens: 64,
compactionRetries: 0,
maxOverflowRetries: 1,
})
try {
const agent = ctx.agentLoop.create(SessionId(`overflow-${delivery}`), {
provider: 'unconfigured-agent-fallback',
model: 'unconfigured-agent-fallback',
})
for (let turn = 1; turn <= 2; turn += 1) {
const sentinel = turn === 1 ? 'OLD HISTORY SENTINEL' : 'RECENT HISTORY'
agent.session.append('turn/start', {
turn,
trigger: { kind: 'message', source: { kind: 'user' } },
})
agent.session.append('user/message', {
content: [{ type: 'text', text: `${sentinel} ${'old context '.repeat(200)}` }],
source: { kind: 'user' },
}, { surfaceOp: 'append' })
agent.session.append('step/start', { turn, step: 1 })
agent.session.append('assistant/message', {
provenance: { provider: 'mock', model: 'mock' },
turn,
step: 1,
content: [{ type: 'text', text: `historical response ${turn} ${'detail '.repeat(200)}` }],
}, { surfaceOp: 'append' })
agent.session.append('step/end', { turn, step: 1 })
agent.session.append('turn/end', { turn, reason: { kind: 'completed' } })
}
agent.send([{ type: 'text', text: 'continue from history' }])
await agent.whenIdle()
expect(adapter.conversationRequests).toHaveLength(2)
expect(adapter.summaryRequests).toHaveLength(1)
expect(JSON.stringify(adapter.conversationRequests[0]!.messages)).toContain('OLD HISTORY SENTINEL')
const retry = JSON.stringify(adapter.conversationRequests[1]!.messages)
expect(retry).toContain('RECOVERY CHECKPOINT')
expect(retry).not.toContain('OLD HISTORY SENTINEL')
const events = [...agent.session.events]
const failedEnd = events.find(event =>
event.type === 'step/end' && event.data.turn === 3 && event.data.step === 1,
)!
const retryStart = events.find(event =>
event.type === 'step/start' && event.data.turn === 3 && event.data.step === 2,
)!
const compaction = events.filter(event =>
event.type === 'compact/start'
|| event.type === 'compact/summary'
|| event.type === 'compact/end',
)
expect(compaction.map(event => event.type)).toEqual([
'compact/start',
'compact/summary',
'compact/end',
])
expect(compaction.every(event => event.seq > failedEnd.seq && event.seq < retryStart.seq)).toBe(true)
expect(events.at(-1)).toMatchObject({
type: 'turn/end',
data: { reason: { kind: 'completed' } },
})
} finally {
await ctx.fiber.dispose()
}
},
)
})

7
packages/compact/compact/README.md
View File

@@ -18,7 +18,7 @@ Both methods are **abstract** — the backend owns trigger policy, retention, ev
| Member | Semantics |
|---|---|
| `compactIfNeeded(agent, fullSystemPrompt, sessionPrefix, signal)` | Estimate the surface-derived history size; if over the backend's threshold, compact an older range via `compactRegion`, keeping recent context intact. Returns the `CompactionResult`, or `null` if nothing needed compacting. All parameters required — the loop's `agent/pre-step` checkpoint supplies the agent, assembled `fullSystemPrompt`, composed `sessionPrefix` (request-only messages every request carries but the derived history omits — the pressure estimate must count them), and turn `signal`. A backend's summarization request is a direct `ctx.llm.stream()` call (not a loop step), so per-call interception happens at `llm/stream`. |
| `compactIfNeeded(agent, trigger, signal)` | Consider automatic compaction for `trigger: 'pressure' \| 'context-overflow'`. A pressure trigger may apply the backend's threshold and retained-tail policy; a confirmed overflow may force a useful balanced reduction. Returns the `CompactionResult`, or `null` when no safe range exists. A backend's summarization request is a direct `ctx.llm.stream()` call (not a loop step), so per-call interception happens at `llm/stream`. |
| `compactRegion(start, end, agent, signal?)` | Forcibly summarize surface nodes `[start, end]` (inclusive seqs) from `agent.session` into a single replacement node. **Throws** if a compaction is already in progress, if `start`/`end` aren't surface nodes, or if `start` is positioned after `end` on the surface. The range is a SURFACE-POSITION span, not a numeric seq interval — after a prior replace lands a fresh high-seq summary node at the shadowed range's position, surface order no longer tracks seq order. |
`CompactionResult` keeps the raw summary and bookkeeping-event seqs available to callers alongside the shadowed range and token accounting; its drift-checked shape lives in the [compaction data-structure reference](../../../docs/core-data-structures/compaction.md#compactionresult).
@@ -74,6 +74,5 @@ Subclass `CompactService`, implement `compactIfNeeded` and `compactRegion`, and
## Known Limitations and Deferred Work
- **No model-facing consumer tier yet** — `@deepseek-ai/dsh-tool-compact` (the `/compact` tool) is deferred; compaction is reachable only via direct `ctx.compact` calls or a backend's auto listener.
- **Single-unit overflow is out of contract** — one retained unit (a closed step or a large pasted `user/message`) alone exceeding the budget cannot be compacted; the call may go out over-budget.
- **A session prefix that alone approaches the window is a configuration error no backend fixes** — compaction shrinks derived history, never the prefix.
- **Request context injected by downstream `agent/request` listeners sits outside pressure accounting** — `compactIfNeeded` counts prefix, derived history, and system prompt only.
- **Single-unit overflow is out of contract** — one indivisible unit (a closed tool pair or a large pasted `user/message`) alone exceeding the budget cannot be compacted.
- **An envelope that alone approaches the window is not surface-compaction work** — compaction shrinks derived history, never the system prompt, tools, or session prefix.

26
packages/compact/compact/src/index.ts
View File

@@ -8,7 +8,6 @@
*/
import { Context, Service } from 'cordis'
import type { Message } from '@deepseek-ai/dsh-llm'
import type { Session } from '@deepseek-ai/dsh-session'
import type { CompactionResult } from './types.ts'
@@ -16,10 +15,13 @@ export type { CompactionResult } from './types.ts'
export { renderContentBlocks, renderTranscript } from './render.ts'
export { toolPairingBalancedAfter, toolPairingBalancedBefore } from './tool-pairing.ts'
/** Why automatic policy is asking a backend to consider compaction. */
export type CompactionTrigger = 'pressure' | 'context-overflow'
/** Minimal agent context compaction needs without depending on the agent package. */
export interface CompactAgentContext {
session: Session
options: { model?: string }
options: { provider?: string; model?: string }
}
declare module 'cordis' {
@@ -41,24 +43,20 @@ export abstract class CompactService extends Service {
}
/**
* Check token pressure and compact if the conversation is too large.
* Estimate the next request, including its session prefix, derived history,
* and system prompt. Above threshold, compact a head-anchored range ending at
* a balanced tool boundary and reconsolidate any prior automatic checkpoint.
* Return `null` when no compaction is needed or an open tail leaves no safe
* cutoff. A single oversized retained unit or prefix cannot be repaired here.
* Consider automatic compaction for one explicit trigger. Pressure policy
* uses the latest durable routed request, while context-overflow policy may
* force a useful balanced reduction even below the normal threshold. Return
* `null` when no safe range can be compacted. A single oversized retained
* unit or request envelope cannot be repaired through surface compaction.
*
* @param agent - agent context owning the session surface and model options.
* @param fullSystemPrompt - assembled system prompt, counted toward the estimate.
* @param sessionPrefix - the instance's composed session prefix, counted toward the
* estimate.
* @param agent - agent context owning the session surface and routing options.
* @param trigger - normal pressure or provider-confirmed context overflow.
* @param signal - cancellation signal; model-backed implementations must forward it.
* @returns the compaction result, or `null` if no compaction was needed.
*/
abstract compactIfNeeded(
agent: CompactAgentContext,
fullSystemPrompt: string,
sessionPrefix: readonly Message[],
trigger: CompactionTrigger,
signal: AbortSignal,
): Promise<CompactionResult | null>

10
packages/compact/compact/tests/compact.spec.ts
View File

@@ -1,8 +1,7 @@
import { describe, expect, it } from 'vitest'
import { Context } from 'cordis'
import { CompactService } from '@deepseek-ai/dsh-compact'
import type { CompactionResult } from '@deepseek-ai/dsh-compact'
import type { Message } from '@deepseek-ai/dsh-llm'
import type { CompactionResult, CompactionTrigger } from '@deepseek-ai/dsh-compact'
import { Session, SessionId } from '@deepseek-ai/dsh-session'
import type { CompactAgentContext } from '@deepseek-ai/dsh-compact'
@@ -18,8 +17,7 @@ class StubCompactService extends CompactService {
override async compactIfNeeded(
_agent: CompactAgentContext,
_fullSystemPrompt: string,
_sessionPrefix: readonly Message[],
_trigger: CompactionTrigger,
signal: AbortSignal,
): Promise<CompactionResult | null> {
this.lastSignal = signal
@@ -82,7 +80,7 @@ describe('CompactService seam', () => {
const ctx = new Context()
const svc = new StubCompactService(ctx)
const session = new Session(SessionId('s'))
expect(await svc.compactIfNeeded(stubAgent(session), '', [], new AbortController().signal)).toBeNull()
expect(await svc.compactIfNeeded(stubAgent(session), 'pressure', new AbortController().signal)).toBeNull()
})
it('compact/* events merge into SessionEventMap and are log-only', async () => {
@@ -115,7 +113,7 @@ describe('CompactService seam', () => {
await svc.compactRegion(0, 0, stubAgent(session, 'm'), controller.signal)
expect(svc.lastSignal).toBe(controller.signal)
await svc.compactIfNeeded(stubAgent(session), '', [], controller.signal)
await svc.compactIfNeeded(stubAgent(session), 'context-overflow', controller.signal)
expect(svc.lastSignal).toBe(controller.signal)
})
})

3
packages/context/time-context/src/index.ts
View File

@@ -8,7 +8,6 @@
import type { Context } from 'cordis'
import z from 'schemastery'
import type { Agent } from '@deepseek-ai/dsh-agent'
import type { Message } from '@deepseek-ai/dsh-llm'
/** Cordis plugin name used by loader diagnostics. */
export const name = 'time-context'
@@ -162,8 +161,6 @@ export function apply(ctx: Context, config: Config): void {
agent: Agent,
turn: number,
step: number,
_fullSystemPrompt: string,
_sessionPrefix: readonly Message[],
signal: AbortSignal,
) => {
if (signal.aborted) return

2
packages/context/time-context/tests/time-context.spec.ts
View File

@@ -83,7 +83,7 @@ async function fire(
step: number,
signal: AbortSignal = SIGNAL,
): Promise<void> {
await ctx.serial('agent/pre-step', agent, turn, step, '', [], signal)
await ctx.serial('agent/pre-step', agent, turn, step, signal)
}
function textResponse(text: string): StreamChunk[] {

6
packages/cordis/tool-cordis/README.md
View File

@@ -4,7 +4,7 @@ The self-referential cordis toolset: three model-facing tools over the live runt
## What it does
- `cordis_inspect` — read-only report over the runtime: services, the loaded-plugin list, registered tools, the dynamic-mount table, and the catalog-backed `api` / `events` references.
- `cordis_inspect` — read-only report over the runtime: services, the loaded-plugin list, registered tools, the dynamic-mount table, and the catalog-backed `api` / `events` references. An exact `name` with `what: "api"` or `what: "events"` narrows the report and adds the original source JSDoc.
- `cordis_mount` — evaluates model-written JavaScript (the body of an async function) in a `node:vm` sandbox; the code must `return` a cordis plugin, which is mounted under the `cordis-dynamic` group fiber and tracked as `dyn-<n>`.
- `cordis_unmount` — disposes one mount by id, returning only after quiescence.
@@ -22,7 +22,7 @@ The sandbox isolates globals but is not a security boundary. Node globals are ab
## The generated API catalog
`src/api-catalog.ts` is generated by `scripts/gen-cordis-api.ts` from the same AST walk as [docs/cordis-catalog](../../../docs/cordis-catalog/services.md) and freshness-gated by `pnpm run verify-cordis-api` (in `doc-sync`) — never edit it by hand. `cordis_inspect` intersects it with the live service store at call time.
`src/api-catalog.ts` is generated by `scripts/gen-cordis-api.ts` from the same AST walk as [docs/cordis-catalog](../../../docs/cordis-catalog/services.md) and freshness-gated by `pnpm run verify-cordis-api` (in `doc-sync`) — never edit it by hand. `cordis_inspect` intersects it with the live service store at call time. Broad `api` / `events` reports render summaries and signatures only; an exact `name` opts into the retained method/event JSDoc, and unknown or non-running service targets fail loud.
## Rendering
@@ -42,7 +42,7 @@ Namespace plugin: named exports `name` / `inject` / `Config` / `apply`, no defau
### Tool-call history and results
**What the model sees**: Inspect joins selected sections exactly as `## <section>` then a newline and the data-dependent body, with one blank line between sections. Mount returns `mounted <id> (plugin "<name>", state: <state>)`, optionally inserting ` — waiting for service(s): <names> (activates when provided)` before the closing parenthesis. Unmount returns `unmounted <id> (plugin "<name>")`; an unknown id becomes `Error: no dynamic plugin with id "<id>" (list mounts with cordis_inspect what:"dynamic")`. The submitted mount program remains in the assistant tool-call history.
**What the model sees**: Inspect joins selected sections exactly as `## <section>` then a newline and the data-dependent body, with one blank line between sections. Its broad API/event reports omit JSDoc; `name` with `what: "api"` or `what: "events"` returns one exact target with its original JSDoc. Mount returns `mounted <id> (plugin "<name>", state: <state>)`, optionally inserting ` — waiting for service(s): <names> (activates when provided)` before the closing parenthesis. Unmount returns `unmounted <id> (plugin "<name>")`; an unknown id becomes `Error: no dynamic plugin with id "<id>" (list mounts with cordis_inspect what:"dynamic")`. The submitted mount program remains in the assistant tool-call history.
**Token effect**: Inspect output and mount code are data-dependent and resent until compaction; lifecycle acknowledgements are small.

577
packages/cordis/tool-cordis/src/api-catalog.ts
View File

@@ -4,22 +4,30 @@
* `pnpm run verify-cordis-api` in doc-sync).
*
* The machine-readable cordis API catalog `cordis_inspect` serves to the
* model: harness services (summary + public method signatures), harness
* events (mode + signature), and the inherited `ctx` surface. Produced by
* model: harness services (summary + public method signatures/JSDoc),
* harness events (mode + signature/JSDoc), and the inherited `ctx` surface. Produced by
* the same AST walk as docs/cordis-catalog, so this data and the rendered
* docs cannot diverge.
*
* @module @deepseek-ai/dsh-tool-cordis/api-catalog
*/
/** One harness `ctx.<key>` service: its one-line summary and public method signatures. */
/** One public service method and its source-owned contract. */
export interface ServiceApiMethod {
/** Public method signature with its body stripped. */
signature: string
/** Original method JSDoc, with only container indentation removed. */
jsDoc: string
}
/** One harness `ctx.<key>` service: its one-line summary and public methods. */
export interface ServiceApiEntry {
/** The `ctx.<key>` name, e.g. `tools`. */
key: string
/** First sentence of the service class JSDoc. */
summary: string
/** Public method signatures, bodies stripped, in source order. */
methods: readonly string[]
/** Public methods, bodies stripped, in source order. */
methods: readonly ServiceApiMethod[]
}
/** One harness event: its dispatch mode, exact signature, and one-line summary. */
@@ -30,6 +38,8 @@ export interface EventApiEntry {
mode: string
/** The exact listener signature, whitespace-normalized. */
signature: string
/** Original event JSDoc, with only container indentation removed. */
jsDoc: string
/** First sentence of the event JSDoc. */
summary: string
}
@@ -56,239 +66,540 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
key: 'agentLoop',
summary: 'Concrete agent factory and driver service.',
methods: [
'create(id: SessionId, options: AgentOptions = {}, meta: Pick<SessionHeader, \'cwd\'> = {}): Agent',
'async createAgent(ownerCtx: Context, options: CreateAgentOptions): Promise<AgentHandle>',
'async resume(ownerCtx: Context, options: ResumeAgentOptions): Promise<AgentHandle>',
{
signature: 'create(id: SessionId, options: AgentOptions = {}, meta: Pick<SessionHeader, \'cwd\'> = {}): Agent',
jsDoc: '/**\n * Create an agent and session under one caller-supplied identity, owned by\n * the accessing fiber. Constructor-driven config calls mint a fresh combined\n * id before entering this boundary.\n * @param id - shared agent/session identity.\n * @param options - concrete loop options.\n * @param meta - optional fresh-session workspace metadata.\n * @returns the published running agent.\n */',
},
{
signature: 'async createAgent(ownerCtx: Context, options: CreateAgentOptions): Promise<AgentHandle>',
jsDoc: '/**\n * Create an owned agent on a caller-supplied session id.\n * @param ownerCtx - caller context that structurally owns the transaction.\n * @param options - identities, session seed/metadata, loop options, setup, and cancellation.\n * @returns the published handle.\n */',
},
{
signature: 'async resume(ownerCtx: Context, options: ResumeAgentOptions): Promise<AgentHandle>',
jsDoc: '/**\n * Resume an owned agent from the configured persistence service.\n * @param ownerCtx - caller context that owns load, setup, and the live lifecycle.\n * @param options - persisted identity, loop options, setup, and cancellation.\n * @returns the published handle.\n */',
},
],
},
{
key: 'agents',
summary: 'Agent registry (`ctx.agents`): tracks live agents so UI, hook, and orchestrator plugins can find them without depending on the concrete loop package.',
summary: 'Agent service (`ctx.agents`): tracks live agents and carries the initiating Agent through one process-local asynchronous driver chain.',
methods: [
'setFactory(factory: AgentFactory): () => void',
'async create(options: CreateAgentOptions): Promise<AgentHandle>',
'async resume(options: ResumeAgentOptions): Promise<AgentHandle>',
'register(agent: Agent): () => void',
'enter(agent: Agent, owner: Agent | undefined): () => void',
'announce(agent: Agent): void',
'get(id: SessionId): Agent | undefined',
'isOwnedBy(id: SessionId, owner: Agent): boolean',
'list(): Agent[]',
'roots(): Agent[]',
{
signature: 'currentInitiator(): Agent | undefined',
jsDoc: '/**\n * Read the Agent that initiated the inherited asynchronous driver chain.\n * Use this optional form for logging, tracing, metrics, or host attribution\n * that also supports agentless calls. When a parent creates a child, setup\n * reports the causal parent while `agentCtx.agent` identifies the child.\n * @returns the inherited Agent, or `undefined` outside an initiator boundary\n * and inside an explicit clearing boundary.\n * @throws when this service instance has been disposed.\n */',
},
{
signature: 'requireInitiator(): Agent',
jsDoc: '/**\n * Read the initiating Agent and fail when no initiator boundary is active.\n * Use this for private helpers contractually below a driver, or for a\n * deployment-owned outbound request whose contract forbids agentless calls.\n * Generic or direct-call seams use optional lookup or explicit request fields.\n * @returns the inherited Agent.\n * @throws when no initiator is active or this service instance has been disposed.\n */',
},
{
signature: 'withInitiator<T>(agent: Agent, operation: () => T): T',
jsDoc: '/**\n * Run an operation with one exact Agent as its process-local initiator. The\n * exact synchronous value or Promise returned by the operation is preserved.\n * Custom drivers and test harnesses wrap their complete returned foreground\n * lifetime.\n * A queue or wire receiver may establish this boundary only after validating\n * explicit identity and resolving the exact live Agent; this method does neither.\n * Detached work remains owned by the subsystem that starts it.\n * @param agent - initiating Agent to inherit; presence is neither liveness proof nor authorization.\n * @param operation - synchronous or asynchronous operation to invoke.\n * @returns the exact value returned by `operation`.\n * @throws when the initiator scope is closing/disposed, or when `operation` throws.\n */',
},
{
signature: 'withoutInitiator<T>(operation: () => T): T',
jsDoc: '/**\n * Run an operation inside a boundary that hides any inherited initiating\n * Agent. The exact synchronous value or Promise is preserved.\n * Use this while creating lazy shared timers, queue pumps, pool maintenance,\n * watchers, or exporters so they do not inherit the first Agent that happens\n * to initialize them. It clears only initiator attribution, not explicit\n * fields, and does not own or drain detached resources.\n * @param operation - synchronous or asynchronous operation to invoke without an initiator.\n * @returns the exact value returned by `operation`.\n * @throws when the initiator scope is closing/disposed, or when `operation` throws.\n */',
},
{
signature: 'setFactory(factory: AgentFactory): () => void',
jsDoc: '/**\n * Register the agent-creation factory (the loop calls this on construction,\n * effect-scoped). A traced Cordis service is canonicalized to its concrete\n * target; each create/resume call is then traced through that caller\'s\n * context so ownership follows the caller without stacking proxy layers.\n * Throws if a factory is already registered. Returns the disposer; on\n * dispose the factory slot is cleared.\n * @param factory - the loop-owned factory {@link create}/{@link resume} delegate to.\n * @returns the disposer that clears the factory slot. The exact\n * Cordis effect disposer (single-shot): composite (generator) effects may\n * yield it directly — exact identity nests the teardown in order.\n */',
},
{
signature: 'async create(options: CreateAgentOptions): Promise<AgentHandle>',
jsDoc: '/**\n * Create and publish a new agent through the registered factory.\n * Distinct from {@link register} (which records an already-constructed\n * agent): this constructs the agent and its session. Rejects if no factory is\n * registered or creation/setup fails. The resolved {@link AgentHandle} lets\n * the owner tear down exactly this agent.\n * @param options - shared identity, session seed/metadata, and agent options.\n * @returns the handle after setup, rollback-covered publication, and loop start complete.\n */',
},
{
signature: 'async resume(options: ResumeAgentOptions): Promise<AgentHandle>',
jsDoc: '/**\n * Load a persisted session and resume an agent on it through the registered\n * factory. Rejects if no factory is registered; the factory rejects if\n * session persistence is not configured or persistence/setup fails.\n * @param options - persisted identity, configuration, and optional setup.\n * @returns the handle after setup, rollback-covered publication, and loop start complete.\n */',
},
{
signature: 'register(agent: Agent): () => void',
jsDoc: '/**\n * Register a live agent. Throws if an agent with the same id is already\n * registered. Emits `agent/created` on registration and `agent/disposed`\n * when the calling fiber is disposed — both with the agent\'s scope carrier\n * (`scopeTarget(agent, agent)`): the subject is the agent in hand, so the\n * emits are scope-filtered regardless of which context invoked `register`\n * (calling through `agent.ctx` scopes EFFECTS; dispatch scoping always\n * requires passing the carrier). Returns the disposer.\n * @param agent - the already-constructed agent to record in the store.\n * @returns the EXACT Cordis effect disposer (single-shot; a repeat call\n * returns undefined without awaiting an in-flight teardown). Exact\n * identity is load-bearing: a composite (generator) effect that owns a\n * teardown ORDER — the agent factory\'s lifecycle chain — must yield THIS\n * function so Cordis nests the unregistration at that yield position;\n * yielding a wrapper would leave it disposing as a concurrent sibling on\n * owner unload, unregistering the agent (and emitting `agent/disposed`)\n * while its final turn is still draining.\n */',
},
{
signature: 'enter(agent: Agent, owner: Agent | undefined): () => void',
jsDoc: '/**\n * Insert an already-constructed agent without announcing it. This is the\n * advanced ordered-lifecycle primitive used by the async agent factory: it\n * first completes setup while the agent is unpublished, then assigns the\n * returned detach closure into its pre-installed composite teardown before\n * calling {@link announce}. Ordinary callers use {@link register}.\n * @param agent - the prepared, unpublished agent.\n * @param owner - live agent whose scoped context created this agent, or\n * undefined for a top-level runtime root. This is runtime ownership, not\n * the resumed session\'s durable parent lineage.\n * @returns an idempotent closure that removes this exact entry and emits\n * `agent/disposed` with listener failures contained. When called from a\n * synchronous `agent/created` listener, removal and disposal wait until\n * that creation dispatch unwinds.\n */',
},
{
signature: 'announce(agent: Agent): void',
jsDoc: '/**\n * Announce an agent previously inserted with {@link enter}.\n * @param agent - the live inserted agent to announce.\n * @throws if `agent` is not the exact live registry entry for its id, or its\n * creation announcement already began (including a reentrant call from a\n * creation listener).\n */',
},
{
signature: 'get(id: SessionId): Agent | undefined',
jsDoc: '/**\n * Look up a live agent.\n * @param id - the shared agent/session id to look up.\n * @returns the agent, or undefined when no live agent has that id.\n */',
},
{
signature: 'isOwnedBy(id: SessionId, owner: Agent): boolean',
jsDoc: '/**\n * Test whether a live agent was created through one exact parent agent\'s\n * scoped context. Runtime ownership is independent of durable session\n * lineage and remains unambiguous when unrelated providers reuse an id.\n * @param id - the candidate child agent\'s shared agent/session id.\n * @param owner - the expected runtime creator agent.\n * @returns true only while the exact child entry is live under that owner.\n */',
},
{
signature: 'list(): Agent[]',
jsDoc: '/**\n * All live agents, in registration order.\n * @returns a fresh array; mutating it does not affect the registry.\n */',
},
{
signature: 'roots(): Agent[]',
jsDoc: '/**\n * All live top-level agents in registration order. A top-level agent was\n * created without an owning agent context; durable session lineage does not\n * affect this runtime relation, so a resumed fork may still be a root.\n * @returns a fresh array; mutating it does not affect the registry.\n */',
},
],
},
{
key: 'approval',
summary: 'Approval service that applies session policy before answerers and logs every ask/outcome pair to the requesting session.',
methods: [
'async request(req: ApprovalRequest): Promise<ApprovalOutcome>',
{
signature: 'async request(req: ApprovalRequest): Promise<ApprovalOutcome>',
jsDoc: '/**\n * Ask the composed answerers to decide one readonly same-process request.\n * The service borrows the request, agent, session, and live signal directly.\n * The request requires an open turn because the audit pair must be enclosed\n * by the durable log\'s commit/replay boundary; an idle ask rejects before\n * appending anything. The answerer phase always produces an outcome: an\n * aborted signal yields `\'cancelled\'`, a missing or throwing answerer yields\n * `\'unavailable\'` (fail closed), and a rogue non-vocabulary return value is\n * normalized to `\'unavailable\'`. A failure that prevents either audit append\n * from committing still rejects because returning an unlogged decision would\n * violate the pair. Session contains post-commit observer failures, so an\n * authoritative append cannot reject the request or suppress its matching\n * audit event.\n * @param req - the pending decision (agent, tool identity, reason, signal).\n * @returns the closed outcome; `\'allowed-once\'` is the only grant.\n * @throws when no turn is open or either audit event fails before the session\n * append commit point.\n */',
},
],
},
{
key: 'bash',
summary: 'Abstract bash execution service.',
methods: [
'abstract resolve(request: BashExecRequest): BashExecSpec',
'abstract run(spec: BashExecSpec): Promise<BashRunResult>',
'abstract start(spec: BashExecSpec): BashProcess',
{
signature: 'abstract resolve(request: BashExecRequest): BashExecSpec',
jsDoc: '/**\n * Apply implementation-owned defaults and caps to a request before execution.\n * @param request - the caller\'s request; omitted fields get this\n * implementation\'s defaults, capped fields are clamped.\n * @returns the fully-specified spec to hand to {@link run}/{@link start}.\n */',
},
{
signature: 'abstract run(spec: BashExecSpec): Promise<BashRunResult>',
jsDoc: '/**\n * Run a command in the foreground; resolves when it finishes.\n * @param spec - a resolved spec from {@link resolve}, never a raw request.\n * @returns the outcome; nonzero exits, timeout kills, and abort kills\n * resolve with a descriptive result rather than reject.\n */',
},
{
signature: 'abstract start(spec: BashExecSpec): BashProcess',
jsDoc: '/**\n * Start a background process and return its handle immediately.\n * @param spec - a resolved spec from {@link resolve}, never a raw request.\n * @returns the live process handle (reads, kill, quiescence promise).\n */',
},
],
},
{
key: 'bashEnv',
summary: 'Registry (`ctx.bashEnv`) for trusted, per-execution `DSH_*` variables.',
methods: [
'register(contributor: BashEnvContributor): () => void',
'collect(execution: ToolExecution): DshEnvironment',
'list(): BashEnvVariableInfo[]',
{
signature: 'register(contributor: BashEnvContributor): () => void',
jsDoc: '/**\n * Register one environment contributor. Names and keys are unique; built-in\n * keys are reserved. Registration is disposed with the calling plugin fiber.\n * @param contributor - declared key ownership and per-execution resolver.\n * @returns the disposer that unregisters the contribution.\n */',
},
{
signature: 'collect(execution: ToolExecution): DshEnvironment',
jsDoc: '/**\n * Build the trusted `DSH_*` snapshot for one bash tool execution.\n * @param execution - the current tool execution.\n * @returns an immutable environment overlay containing built-ins and current contributions.\n */',
},
{
signature: 'list(): BashEnvVariableInfo[]',
jsDoc: '/**\n * Enumerate plugin-contributed variables without executing their resolvers.\n * @returns declarations sorted by environment variable name.\n */',
},
],
},
{
key: 'codeRuntime',
summary: 'Registers one `ctx.codeRuntime` implementation.',
methods: [
'abstract run(request: CodeRunRequest): Promise<CodeRunResult>',
{
signature: 'abstract run(request: CodeRunRequest): Promise<CodeRunResult>',
jsDoc: '/**\n * Execute one program against the request\'s bindings and capture what it\n * emitted. See the class doc for the resolution contract (error is a result\n * field; rejection means seam misuse only).\n * @param request - the program, its bindings, and the abort signal; the\n * request carries everything the runtime acts on, with no hidden defaults.\n * @returns the run\'s outcome: completion value (when transferable), the\n * ordered log capture, and the failure (if any).\n */',
},
],
},
{
key: 'compact',
summary: 'Abstract compaction service.',
methods: [
'abstract compactIfNeeded( agent: CompactAgentContext, fullSystemPrompt: string, sessionPrefix: readonly Message[], signal: AbortSignal, ): Promise<CompactionResult | null>',
'abstract compactRegion( start: number, end: number, agent: CompactAgentContext, signal?: AbortSignal, ): Promise<CompactionResult>',
{
signature: 'abstract compactIfNeeded( agent: CompactAgentContext, trigger: CompactionTrigger, signal: AbortSignal, ): Promise<CompactionResult | null>',
jsDoc: '/**\n * Consider automatic compaction for one explicit trigger. Pressure policy\n * uses the latest durable routed request, while context-overflow policy may\n * force a useful balanced reduction even below the normal threshold. Return\n * `null` when no safe range can be compacted. A single oversized retained\n * unit or request envelope cannot be repaired through surface compaction.\n *\n * @param agent - agent context owning the session surface and routing options.\n * @param trigger - normal pressure or provider-confirmed context overflow.\n * @param signal - cancellation signal; model-backed implementations must forward it.\n * @returns the compaction result, or `null` if no compaction was needed.\n */',
},
{
signature: 'abstract compactRegion( start: number, end: number, agent: CompactAgentContext, signal?: AbortSignal, ): Promise<CompactionResult>',
jsDoc: '/**\n * Forcibly compact a range of surface nodes into a single summary node.\n * `start` and `end` name an inclusive span by surface position, not numeric seq\n * order; replacements can make visible seqs non-monotonic. Both edges must be\n * balanced so assistant tool calls remain paired with their results. A model-\n * backed implementation forwards cancellation and rejects active, missing,\n * reversed, or unbalanced ranges. The target session is `agent.session`.\n * Use {@link toolPairingBalancedBefore} and {@link toolPairingBalancedAfter}\n * for the edge checks.\n *\n * @param start - first surface seq, inclusive.\n * @param end - last surface seq, inclusive.\n * @param agent - context whose session is mutated and whose routing options guide summarization.\n * @param signal - optional cancellation; model-backed implementations must forward it.\n * @throws when compaction is active or the range is missing, reversed, or unbalanced.\n * @returns the appended event seqs, summary, replaced range, and token accounting.\n */',
},
],
},
{
key: 'fs',
summary: 'Abstract filesystem provider.',
methods: [
'abstract resolve(path: string, opts?: { cwd?: string; signal?: AbortSignal }): Promise<FsTarget>',
'abstract stat(target: FsTarget, signal?: AbortSignal): Promise<FsInfo | undefined>',
'abstract lstat(path: string, opts?: { cwd?: string }, signal?: AbortSignal): Promise<FsPathInfo | undefined>',
'abstract readText(target: FsTarget, signal?: AbortSignal): Promise<string>',
'abstract streamText(target: FsTarget, signal?: AbortSignal): Promise<AsyncIterable<string>>',
'abstract listDir(target: FsTarget, signal?: AbortSignal): Promise<FsDirEntry[]>',
'abstract writeText(target: FsTarget, content: string, expected?: FsWriteIntent, signal?: AbortSignal): Promise<FsWriteOutcome>',
'abstract editText(target: FsTarget, edit: FsEditRequest, expected?: { version: FsVersion }, signal?: AbortSignal): Promise<FsEditOutcome>',
{
signature: 'abstract resolve(path: string, opts?: { cwd?: string; signal?: AbortSignal }): Promise<FsTarget>',
jsDoc: '/**\n * Resolve a model/plugin-supplied path into a stable {@link FsTarget}. May perform I/O (a\n * remote/sandboxed backend may need a round-trip to map a path to a stable identity), hence\n * async even though the local backend only normalizes + realpaths.\n *\n * @param path - the path to resolve; relative paths resolve against `opts.cwd`.\n * @param opts - optional cwd override and cancellation signal.\n * @returns the stable target; the same file yields the same `targetKey`.\n */',
},
{
signature: 'abstract stat(target: FsTarget, signal?: AbortSignal): Promise<FsInfo | undefined>',
jsDoc: '/**\n * Return target metadata, or `undefined` when the target does not exist.\n * @param target - the resolved target to stat.\n * @param signal - aborts the metadata round-trip.\n * @returns metadata only, never content; undefined for an absent target.\n */',
},
{
signature: 'abstract lstat(path: string, opts?: { cwd?: string }, signal?: AbortSignal): Promise<FsPathInfo | undefined>',
jsDoc: '/**\n * Return path metadata without following the final path component when it is a\n * symbolic link. This is intentionally path-shaped, not target-shaped:\n * {@link resolve} follows symlinks to produce the stable identity used by\n * normal reads/writes, while `lstat` lets a consumer reject the path itself\n * before that follow happens.\n *\n * `opts.cwd` follows {@link resolve}\'s cwd rules. `undefined` means the path is\n * absent.\n * @param path - the path to inspect; relative paths resolve against `opts.cwd`.\n * @param opts - `cwd` overrides the backend\'s default base for relative paths.\n * @param signal - aborts the metadata round-trip.\n * @returns metadata only, never content; undefined for an absent path.\n */',
},
{
signature: 'abstract readText(target: FsTarget, signal?: AbortSignal): Promise<string>',
jsDoc: '/**\n * Read the whole regular text file as a single decoded string.\n * @param target - the resolved target to read.\n * @param signal - aborts the read.\n * @returns the full decoded UTF-8 content.\n */',
},
{
signature: 'abstract streamText(target: FsTarget, signal?: AbortSignal): Promise<AsyncIterable<string>>',
jsDoc: '/**\n * Stream the whole regular text file as decoded text chunks (same text\n * semantics as {@link readText}, for large files). The backend owns\n * cross-chunk UTF-8 decoding and binary rejection so the policy layer never\n * touches raw bytes.\n * @param target - the resolved target to read.\n * @param signal - aborts the stream, including between chunks.\n * @returns the chunk iterable, decoded and validated like {@link readText}.\n */',
},
{
signature: 'abstract listDir(target: FsTarget, signal?: AbortSignal): Promise<FsDirEntry[]>',
jsDoc: '/**\n * List direct children of a directory in stable name order. Returns resolved\n * child targets plus cheap metadata only; never reads file contents.\n * @param target - the resolved directory target.\n * @param signal - aborts the listing.\n * @returns one entry per direct child, in stable name order.\n */',
},
{
signature: 'abstract writeText(target: FsTarget, content: string, expected?: FsWriteIntent, signal?: AbortSignal): Promise<FsWriteOutcome>',
jsDoc: '/**\n * Atomically create or replace UTF-8 text. `expected` guards intent and\n * staleness; omission allows unconditional overwrite.\n * @param target - the resolved target to write.\n * @param content - the full new file content.\n * @param expected - the write intent guarding the write; omit for unconditional.\n * @param signal - aborts before the atomic rename takes effect.\n * @returns the outcome, including the version the write produced.\n */',
},
{
signature: 'abstract editText(target: FsTarget, edit: FsEditRequest, expected?: { version: FsVersion }, signal?: AbortSignal): Promise<FsEditOutcome>',
jsDoc: '/**\n * Atomically edit literal text. When supplied, the version guard is checked\n * before matching so stale content reports `FS_STALE_VERSION`; omission edits\n * the current content without a freshness precondition.\n * @param target - the resolved target to edit.\n * @param edit - the literal search/replace request.\n * @param expected - the version guard; omit for an unconditional edit.\n * @param signal - aborts before the atomic rename takes effect.\n * @returns the outcome, including the version the edit produced.\n */',
},
],
},
{
key: 'llm',
summary: 'The abstract `llm` service: an adapter registry plus a streaming model-call surface, interceptable via the `llm/stream` waterfall.',
methods: [
'registerAdapter(providers: string[], adapter: LlmAdapter): () => void',
'listProviders(): LlmProviderInfo[]',
'async listModels(provider: string): Promise<LlmModelInfo[]>',
'stream(options: GenerateOptions): AsyncIterable<StreamChunk>',
{
signature: 'registerAdapter(providers: string[], adapter: LlmAdapter): () => void',
jsDoc: '/**\n * Register an adapter for the given provider routes. Throws `LlmError` with code\n * `DUPLICATE_ADAPTER` if any provider already has an adapter (all-or-nothing).\n * Disposed with the fiber.\n * @param providers - every provider route this adapter should serve.\n * @param adapter - the adapter that streams calls for those providers.\n * @returns the disposer that unregisters all of them.\n */',
},
{
signature: 'listProviders(): LlmProviderInfo[]',
jsDoc: '/**\n * Describe provider routes with a registered adapter.\n * @returns detached provider metadata in registration order.\n */',
},
{
signature: 'async listModels(provider: string): Promise<LlmModelInfo[]>',
jsDoc: '/**\n * Discover models advertised by one registered provider. Catalog membership\n * is advisory and never changes routing or request validation.\n * @param provider - registered provider route to inspect.\n * @returns detached model metadata in adapter-preferred order.\n */',
},
{
signature: 'stream(options: GenerateOptions): AsyncIterable<StreamChunk>',
jsDoc: '/**\n * Stream one model call as raw chunks (token-level deltas). Throws\n * `LlmError` with code `NO_ADAPTER` if no adapter is registered for\n * `options.provider`. Replay state is retained only when the same adapter\n * instance owns its historical provider and the target provider. Final\n * adapter selection, dispatch, and iteration failures retain their original\n * Error identity and are tagged in a call-local scope for narrow agent-loop\n * request recovery; middleware and nested-call failures remain untagged for\n * the outer call.\n * @param options - the full request; `options.provider` selects the adapter.\n * @returns the chunk stream, possibly wrapped by `llm/stream` listeners.\n */',
},
],
},
{
key: 'permission',
summary: 'Owns the deployment\'s permission presets and their write path.',
methods: [
'current(events: readonly SessionEvent[]): string',
'resolve(name: string): PresetSpec',
'optionOf(name: string): PresetOption',
'set(session: Session, name: string): void',
{
signature: 'current(events: readonly SessionEvent[]): string',
jsDoc: '/**\n * Resolve the preset matching the effective knob values. A still-matching\n * last selection wins shared-bundle ties; otherwise the first table match\n * wins, or {@link CUSTOM_PRESET} when no entry matches.\n * @param events - the session\'s events in log order.\n * @returns the effective preset name, or `custom` when nothing matches.\n */',
},
{
signature: 'resolve(name: string): PresetSpec',
jsDoc: '/**\n * Resolve a preset\'s knob bundle.\n * @param name - the preset name to resolve.\n * @returns the configured bundle.\n * @throws when `name` is not in the table.\n */',
},
{
signature: 'optionOf(name: string): PresetOption',
jsDoc: '/**\n * Build the client option for a table entry or {@link CUSTOM_PRESET}. A\n * missing label falls back to the table key.\n * @param name - a table key, or `custom`.\n * @returns the option a client renders.\n * @throws when `name` is neither a table key nor `custom`.\n */',
},
{
signature: 'set(session: Session, name: string): void',
jsDoc: '/**\n * Record a changed preset, then update each changed knob through its own\n * setter. Selecting the effective preset again appends nothing.\n * @param session - the session the switch belongs to.\n * @param name - the preset to switch to; unknown names throw.\n */',
},
],
},
{
key: 'sandbox',
summary: 'Abstract process-sandbox service.',
methods: [
'abstract confine(argv: readonly string[], policy: SandboxPolicy): ConfinedArgv',
{
signature: 'abstract confine(argv: readonly string[], policy: SandboxPolicy): ConfinedArgv',
jsDoc: '/**\n * Wrap `argv` so it executes confined under `policy` on this host; the\n * caller spawns the returned argv in place of its own.\n * @param argv - the exact argv the caller is about to spawn (program plus\n * arguments), NOT a shell string — a shell-shaped consumer passes\n * `[\'bash\', \'-c\', command]`.\n * @param policy - the file-effect policy this execution runs under,\n * carried per call (see {@link SandboxPolicy}).\n * @returns the argv to spawn instead, plus the enforcement completeness\n * the selected backend achieves for it.\n */',
},
],
},
{
key: 'sessionPersistence',
summary: 'Durable append-only session storage.',
methods: [
'abstract locate(meta: SessionHeader): SessionLocation | undefined',
'abstract create(meta: SessionHeader): Promise<void>',
'abstract append(id: SessionId, events: readonly SessionEvent[]): Promise<void>',
'abstract load(id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }>',
'abstract list(): Promise<SessionHeader[]>',
{
signature: 'abstract locate(meta: SessionHeader): SessionLocation | undefined',
jsDoc: '/**\n * Resolve this backend\'s independent local artifact for a session without\n * reading, creating, flushing, or otherwise materializing it. Backends such\n * as SQLite that do not own one artifact per session return `undefined`.\n * @param meta - the immutable session header whose artifact is requested.\n * @returns the backend-specific absolute location, when one exists.\n */',
},
{
signature: 'abstract create(meta: SessionHeader): Promise<void>',
jsDoc: '/**\n * Register a new session\'s metadata. A backend MAY defer the physical write\n * until the first {@link append} (lazy materialization), in which case a\n * created-but-never-appended session is absent from {@link list}\n * — abandoned sessions leave nothing behind.\n * @param meta - the immutable header (id, version, cwd, lineage) to record.\n */',
},
{
signature: 'abstract append(id: SessionId, events: readonly SessionEvent[]): Promise<void>',
jsDoc: '/**\n * Durably persist a batch of events (called from the write-behind drain at\n * the `session/flush` checkpoint). Honors the append-only and contiguous-seq\n * contracts: the first event\'s `seq` MUST equal the stored next-seq (after\n * `load` has durably closed any interrupted turn). Rejects non-JSON-\n * serializable `event.data` with an error naming the offending event type.\n * @param id - the session the batch belongs to.\n * @param events - the contiguous batch to persist, in seq order.\n */',
},
{
signature: 'abstract load(id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }>',
jsDoc: '/**\n * Load a header and balanced contiguous log. A complete interrupted final\n * turn is preserved and durably closed with missing tool errors plus any open\n * step and turn boundaries; only a torn final record is discarded. Unknown\n * versions and corruption in the committed prefix reject.\n * @param id - the persisted session to reload.\n * @returns the header and a log ending on a balanced `turn/end`.\n */',
},
{
signature: 'abstract list(): Promise<SessionHeader[]>',
jsDoc: '/**\n * Lightweight listing from metadata, without a full-log parse.\n * @returns one header per materialized session.\n */',
},
],
},
{
key: 'sessionQuery',
summary: 'Live-preferred logical-corpus exact-read and relationship-tracing service.',
methods: [
'listSessions(): Promise<SessionRecord[]>',
'async listEvents(sessionId: SessionId): Promise<SessionEventRecord[]>',
'async traceSession(sessionId: SessionId): Promise<SessionLineageTrace>',
'async traceEvent(request: SessionEventTraceRequest): Promise<SessionEventTrace>',
'async readEvent(request: SessionEventReadRequest): Promise<SessionEventWindow>',
{
signature: 'listSessions(): Promise<SessionRecord[]>',
jsDoc: '/**\n * List the complete logical corpus using live-preferred records.\n * @returns deterministic newest-first cloned session records.\n */',
},
{
signature: 'async listEvents(sessionId: SessionId): Promise<SessionEventRecord[]>',
jsDoc: '/**\n * List lightweight raw-log event records for one logical session.\n * @param sessionId - live-preferred session id to read.\n * @returns event records in ascending seq order.\n */',
},
{
signature: 'async traceSession(sessionId: SessionId): Promise<SessionLineageTrace>',
jsDoc: '/**\n * Trace known ancestry and descendants from one corpus observation.\n * @param sessionId - logical session id to trace.\n * @returns a complete lineage or an explicit unresolved parent boundary.\n * @throws when corpus resolution fails, the target is absent, or its known ancestry cycles.\n */',
},
{
signature: 'async traceEvent(request: SessionEventTraceRequest): Promise<SessionEventTrace>',
jsDoc: '/**\n * Trace one event\'s direct positional and provenance relationships.\n * @param request - target session id and event seq.\n * @returns direct links plus the target\'s positional replacement chain.\n * @throws when source resolution fails, the target is absent, or surface/provenance validation fails.\n */',
},
{
signature: 'async readEvent(request: SessionEventReadRequest): Promise<SessionEventWindow>',
jsDoc: '/**\n * Read one full event plus a bounded raw-log context window.\n * @param request - target session/seq and context sizes.\n * @returns cloned target and neighboring events.\n */',
},
],
},
{
key: 'sessions',
summary: 'In-memory session store (`ctx.sessions`).',
methods: [
'create(id?: SessionId, options?: CreateSessionOptions): Session',
'prepare(id?: SessionId, options?: CreateSessionOptions): Session',
'enter(session: Session): () => void',
'announce(session: Session): void',
'async flush(session: Session): Promise<void>',
'get(id: SessionId): Session | undefined',
'list(): Session[]',
'fork(source: SessionForkSource, boundary?: number, childSessionId?: SessionId): Session',
{
signature: 'create(id?: SessionId, options?: CreateSessionOptions): Session',
jsDoc: '/**\n * Create a session owned by the calling fiber: disposing that fiber stops\n * event notification and removes the session from the store. `options.seed`\n * populates the session with a copy of those events (replay/fork);\n * `options.meta` attaches creation metadata (validated absolute `cwd`,\n * `parentSession` lineage) as the immutable {@link SessionHeader} (the store\n * fills `version`/`id`/`createdAt`).\n *\n * For an agent whose session must be torn down IN ORDER with its loop (so the\n * loop\'s final flush is captured before the store attachment ends), do NOT use this\n * — fold the session lifecycle into the agent\'s own effect via\n * {@link prepare} + {@link enter} + {@link announce} (see\n * `dsh-agent-loop`\'s creation transaction).\n *\n * @param id - the session id; omitted, the store mints `session-<n>`.\n * @param options - seed events and/or creation metadata for the header.\n * @returns the live session, already entered and announced.\n * @throws if a session with `id` already exists, metadata is not a plain\n * lossless-JSON record with valid scalar fields, or `meta.cwd` is a\n * non-absolute path (storage backends key directories off it).\n */',
},
{
signature: 'prepare(id?: SessionId, options?: CreateSessionOptions): Session',
jsDoc: '/**\n * Build a session WITHOUT entering it into the store — validate the id/cwd and\n * construct the {@link Session} (with its immutable {@link SessionHeader}).\n * Pairs with {@link enter} + {@link announce}: a caller that owns a composite\n * `ctx.effect` (the agent factory) folds the session lifecycle into that ONE\n * effect so a fiber unload tears the session + agent down as a single ORDERED\n * chain rather than as racing sibling effects — which would remove the publication hooks\n * before the loop\'s closing `session/flush`, dropping the closing events.\n *\n * @param id - the session id; omitted, the store mints `session-<n>`.\n * @param options - seed events and/or creation metadata for the header.\n * @returns the constructed session, NOT yet in the store.\n * @throws if a session with `id` already exists, metadata is not a plain\n * lossless-JSON record with valid scalar fields, or `meta.cwd` is a\n * non-absolute path.\n */',
},
{
signature: 'enter(session: Session): () => void',
jsDoc: '/**\n * Enter a {@link prepare}d session into the store: install the module-private\n * append publication hooks and add it to the store. Returns the DETACH\n * disposer (hooks + store removal). Does NOT emit `session/created` —\n * the caller yields this disposer inside its effect and THEN calls\n * {@link announce}, so a throwing `session/created` listener rolls the attach\n * back instead of leaking it.\n *\n * Re-checks the id for a duplicate: `prepare` and `enter` are public\n * cross-package primitives and a caller may interleave arbitrary work (or\n * another create) between them, so a stale prepared session must NOT overwrite\n * a live store entry of the same id — its detach disposer would later delete\n * the REAL session. The {@link create} convenience and the agent factory call\n * the two back-to-back so they never trip this, but the public seam cannot\n * assume that.\n *\n * @param session - a {@link prepare}d session not yet in the store.\n * @returns the detach disposer (publication hooks + store removal). When called from\n * a synchronous `session/created` listener, removal and disposal wait until\n * that creation dispatch unwinds.\n * @throws if a session with this id is already in the store.\n */',
},
{
signature: 'announce(session: Session): void',
jsDoc: '/** Emit `session/created` exactly once for an {@link enter}ed session (with\n * the carrier {@link enter} captured). Separate from {@link enter} so the\n * caller can yield the detach disposer first (rollback safety — see\n * {@link enter}).\n * @param session - the entered session to announce to listeners.\n * @throws if the session is not live or its announcement already began,\n * including a reentrant call from a creation listener. */',
},
{
signature: 'async flush(session: Session): Promise<void>',
jsDoc: '/**\n * Dispatch the awaited `session/flush` durability checkpoint for `session`,\n * with the carrier captured at {@link enter}. THE flush entry point: the\n * store owns the carrier, so callers (the loop\'s turn-end checkpoint, idle\n * injection, teardown drains) must come through here rather than dispatch a\n * raw `ctx.parallel(\'session/flush\', …)` — one owner, one spelling, and the\n * scoped-dispatch invariant can pin it.\n * @param session - the session whose buffered events must reach durable storage.\n * @returns resolves when every flush listener has settled; after all settle,\n * rejects with the first registered listener failure if any listener failed.\n */',
},
{
signature: 'get(id: SessionId): Session | undefined',
jsDoc: '/**\n * Look up a live session.\n * @param id - the session id to look up.\n * @returns the session, or undefined when no live session has that id.\n */',
},
{
signature: 'list(): Session[]',
jsDoc: '/**\n * All live sessions, in creation order.\n * @returns a fresh array; mutating it does not affect the store.\n */',
},
{
signature: 'fork(source: SessionForkSource, boundary?: number, childSessionId?: SessionId): Session',
jsDoc: '/**\n * Create a live child session from a turn-enclosed prefix of a live source.\n * `boundary` is an inclusive source event seq; omitted means the source\'s\n * current last event. A non-empty selected slice must end at `turn/end`.\n *\n * @param source - Live source session object or id.\n * @param boundary - Inclusive source event seq to fork through; omitted means\n * the source\'s current last event, and omitted on an empty source forks an\n * empty child.\n * @param childSessionId - Optional child session id; omitted delegates to\n * `SessionStore`\'s id policy.\n * @returns The created live child session.\n */',
},
],
},
{
key: 'skills',
summary: 'Registry of skill providers.',
methods: [
'registerProvider(provider: SkillProvider): () => void',
'register(skill: SkillRegistration): () => void',
'async list(options: SkillLookupOptions = {}): Promise<SkillSummary[]>',
'async get(name: string, options: SkillLookupOptions = {}): Promise<SkillDefinition | undefined>',
{
signature: 'registerProvider(provider: SkillProvider): () => void',
jsDoc: '/**\n * Register a borrowed same-process provider synchronously during plugin apply. Duplicate and\n * reserved names throw; remote initialization belongs in `list()`. Fiber disposal unregisters\n * the provider and invalidates catalog caches.\n * @param provider - the provider to register by `provider.name`.\n * @returns the exact Cordis effect disposer that unregisters this provider;\n * composite effects may yield it directly to preserve teardown ordering.\n */',
},
{
signature: 'register(skill: SkillRegistration): () => void',
jsDoc: '/**\n * Register a borrowed readonly runtime skill. Project entries outrank runtime entries, which\n * outrank user entries. Same-name runtime entries are first-wins; a duplicate logs a warning and\n * receives a no-op disposer so it cannot remove the winner.\n * @param skill - the complete skill definition to expose for discovery.\n * @returns the exact Cordis effect disposer, preserving composite teardown order and invalidating caches.\n */',
},
{
signature: 'async list(options: SkillLookupOptions = {}): Promise<SkillSummary[]>',
jsDoc: '/**\n * List model-invocable skill summaries for a workspace. Lookup options and\n * provider candidates are readonly same-process values borrowed throughout\n * discovery.\n * @param options - lookup options; `cwd` selects project roots and `signal` cancels discovery.\n * @returns sorted summaries, excluding skills disabled for model invocation.\n */',
},
{
signature: 'async get(name: string, options: SkillLookupOptions = {}): Promise<SkillDefinition | undefined>',
jsDoc: '/**\n * Load and validate the winning candidate, passing its opaque discovery locator back to the\n * provider. Cancellation is rechecked after selection, including cache hits, and raced against\n * loading so an uncooperative provider cannot hang the caller.\n * @param name - kebab-case skill name.\n * @param options - lookup options; `cwd` selects workspace-sensitive skills and `signal` cancels work.\n * @returns the full skill, including body content, or `undefined`.\n */',
},
],
},
{
key: 'spillStore',
summary: 'Abstract spill storage service.',
methods: [
'abstract saveText(input: SaveTextSpill): Promise<SpillRef>',
{
signature: 'abstract saveText(input: SaveTextSpill): Promise<SpillRef>',
jsDoc: '/**\n * Persist `input.content` to a session-scoped spill artifact.\n * @param input - the owner, provenance, suggested name, and full text to save.\n * @returns the saved artifact\'s {@link SpillRef}; rejects on a storage failure.\n */',
},
],
},
{
key: 'subagents',
summary: 'Named provider registry and capability-checked start surface.',
methods: [
'registerProvider(provider: SubagentProvider): () => void',
'getProvider(name: string): SubagentProvider | undefined',
'list(): string[]',
'async start(name: string, request: SubagentStartRequest): Promise<SubagentRun>',
{
signature: 'registerProvider(provider: SubagentProvider): () => void',
jsDoc: '/**\n * Register a provider under its name. Registration is effect-scoped and HMR\n * safe; removing a provider blocks new starts but does not revoke runs that\n * were already returned to their holders.\n * @param provider - the trusted provider implementation.\n * @returns the exact Cordis effect disposer.\n */',
},
{
signature: 'getProvider(name: string): SubagentProvider | undefined',
jsDoc: '/**\n * Look up a provider by name.\n * @param name - the provider name.\n * @returns the provider, or undefined when absent.\n */',
},
{
signature: 'list(): string[]',
jsDoc: '/**\n * List registered provider names in insertion order.\n * @returns the registered names.\n */',
},
{
signature: 'async start(name: string, request: SubagentStartRequest): Promise<SubagentRun>',
jsDoc: '/**\n * Establish a ready child on the named provider. Capability and semantic\n * checks run before delegation. Provider ownership lasts until its promise\n * fulfills; a rejection therefore has no run for the caller to dispose and\n * emits no run lifecycle events.\n * @param name - the provider to use.\n * @param request - child prompt, parent, signal, and optional capabilities.\n * @returns the ready holder-owned run.\n */',
},
],
},
{
key: 'systemPrompt',
summary: 'Registry service for the prompt inputs assembled before each model step.',
methods: [
'section(section: PromptSection): () => void',
'tools(provider: (context: AssembleContext) => ToolProviderResult): () => void',
'variable(name: string, provider: (context: AssembleContext) => string | undefined): () => void',
'async assemble(context: AssembleContext = {}): Promise<PromptAssembly>',
{
signature: 'section(section: PromptSection): () => void',
jsDoc: '/**\n * Register an ordered prompt section in the calling context\'s scope. A scoped\n * section shadows a global section with the same name; duplicates within one\n * layer and non-finite orders throw. Registration and disposal emit\n * `system-prompt/change`.\n * @param section - the section to register.\n * @returns the exact Cordis effect disposer.\n */',
},
{
signature: 'tools(provider: (context: AssembleContext) => ToolProviderResult): () => void',
jsDoc: '/**\n * Register a tool-schema provider in the calling context\'s scope. Global and\n * matching scoped providers both contribute; returning the reserved\n * {@link TOOL_ORDER_REST} name makes assembly fail.\n * @param provider - evaluated for each assembly with its context.\n * @returns the exact Cordis effect disposer.\n */',
},
{
signature: 'variable(name: string, provider: (context: AssembleContext) => string | undefined): () => void',
jsDoc: '/**\n * Register a prompt variable in the calling context\'s scope. Scoped values\n * shadow globals; invalid or duplicate names throw. A provider may return\n * `undefined`, but rendering a section that references that value then fails.\n * @param name - the `[a-z][a-z0-9_]*` reference name.\n * @param provider - evaluated for each assembly.\n * @returns the exact Cordis effect disposer.\n */',
},
{
signature: 'async assemble(context: AssembleContext = {}): Promise<PromptAssembly>',
jsDoc: '/**\n * Assemble global and scoped providers, detach tool parameters, apply\n * canonical ordering, then run the assembly waterfall. Scoped sections and\n * variables shadow globals; the returned waterfall value is authoritative.\n * @param context - the optional scope and plugin-defined assembly fields.\n * @returns the authoritative post-waterfall assembly.\n */',
},
],
},
{
key: 'tasks',
summary: 'The `tasks` service: the runtime-global background task registry.',
methods: [
'start(spec: TaskStart): TaskId',
'list(caller?: Agent): TaskSnapshot[]',
'get(id: TaskId, caller?: Agent): TaskSnapshot',
'read(id: TaskId, caller?: Agent): TaskRead',
'kill(id: TaskId, caller?: Agent, reason?: string): \'requested\' | \'already-finished\'',
'async wait(id: TaskId, timeoutMs: number, caller?: Agent, signal?: AbortSignal): Promise<TaskSnapshot>',
'onTaskDone(listener: TaskDoneListener): () => void',
'attachSurface(name: string): () => void',
{
signature: 'start(spec: TaskStart): TaskId',
jsDoc: '/**\n * Preflight access, validation, and owner cleanup before starting and\n * atomically registering work. A throwing starter leaves nothing registered;\n * after it returns, registration cannot fail. Settlement records the outcome,\n * notifies listeners, and releases waiters.\n * @param spec - task identity, owner, and synchronous starter.\n * @returns the registry-issued `<kind>-N` id.\n */',
},
{
signature: 'list(caller?: Agent): TaskSnapshot[]',
jsDoc: '/**\n * List caller-owned and unowned tasks in registration order without exposing\n * another session\'s labels.\n * @param caller - reading agent; a non-agent caller sees only unowned tasks.\n * @returns fresh snapshots.\n */',
},
{
signature: 'get(id: TaskId, caller?: Agent): TaskSnapshot',
jsDoc: '/**\n * Return a non-consuming snapshot without changing its read cursor or notice\n * state. Throws for an unknown or foreign task.\n * @param id - task to look up.\n * @param caller - reading agent checked against the owner.\n * @returns a fresh snapshot.\n */',
},
{
signature: 'read(id: TaskId, caller?: Agent): TaskRead',
jsDoc: '/**\n * Read the next stream delta, or the idempotent final output after settlement.\n * A terminal read marks the task reported. Throws for an unknown or foreign\n * task.\n * @param id - task to read.\n * @param caller - reading agent checked against the owner.\n * @returns output text and the post-read snapshot.\n */',
},
{
signature: 'kill(id: TaskId, caller?: Agent, reason?: string): \'requested\' | \'already-finished\'',
jsDoc: '/**\n * Request cancellation, then mark the task stopping and reported. A producer\n * throw propagates without changing task state. Throws for an unknown or\n * foreign task.\n * @param id - task to cancel.\n * @param caller - killing agent checked against the owner.\n * @param reason - logged reason forwarded to the producer.\n * @returns `requested` for live work, otherwise `already-finished`.\n */',
},
{
signature: 'async wait(id: TaskId, timeoutMs: number, caller?: Agent, signal?: AbortSignal): Promise<TaskSnapshot>',
jsDoc: '/**\n * Wait for settlement or timeout without cancelling the task. Caller abort\n * rejects only while the task is live; after settlement it returns the\n * terminal snapshot so a notice suppressed for this waiter is still delivered.\n * Timed-out and aborted waits detach their resolvers. Throws for invalid,\n * unknown, or foreign input.\n * @param id - task to wait for.\n * @param timeoutMs - positive finite wait bound in milliseconds.\n * @param caller - waiting agent checked against the owner.\n * @param signal - optional cancellation of the wait itself.\n * @returns snapshot at settlement or timeout.\n */',
},
{
signature: 'onTaskDone(listener: TaskDoneListener): () => void',
jsDoc: '/**\n * Register an effect-scoped completion listener. Each listener is contained;\n * returned promises are observed but not awaited. No listener runs after\n * service disposal.\n * @param listener - receives each terminal snapshot and its exact owner.\n * @returns disposer that unregisters the listener.\n */',
},
{
signature: 'attachSurface(name: string): () => void',
jsDoc: '/**\n * Attach an effect-scoped surface that can read and stop tasks. {@link start}\n * refuses work while none is attached.\n * @param name - diagnostic label; duplicate names remain independent.\n * @returns disposer that detaches this surface.\n */',
},
],
},
{
key: 'tokenMeter',
summary: 'Replay owner for one service-wide estimator and isolated per-session folds.',
methods: [
'measure(session: Session, requestHeader?: EpochHeader): TokenMeasurement',
'estimateMessage(message: Message): number',
{
signature: 'measure(session: Session, requestHeader?: EpochHeader): TokenMeasurement',
jsDoc: '/**\n * Measure current request pressure and surface through the durable tail.\n *\n * Provider usage is reused only when the latest successful call\'s canonical\n * request envelope matches `requestHeader` and its total is no lower than\n * that call\'s full heuristic anchor; otherwise the complete envelope and\n * surface are heuristically repriced.\n *\n * `requestHeader` affects request pressure only; surface fields always\n * describe the current session surface. Every call clones those positional\n * nodes, so measurement is O(surface).\n *\n * @param session - session to replay through its current durable tail.\n * @param requestHeader - optional effective request envelope replacing the latest logged header.\n * @returns a detached deeply immutable pressure and surface measurement.\n */',
},
{
signature: 'estimateMessage(message: Message): number',
jsDoc: '/**\n * Heuristically price one model-visible message.\n * @param message - message to price without mutation.\n * @returns content and role-framing tokens under the fixed service heuristic.\n */',
},
],
},
{
key: 'tools',
summary: 'Tool registry and execution pipeline.',
methods: [
'register(definition: ToolDefinition): () => void',
'restrict(filter: ToolRestriction): () => void',
'guard(guard: ToolGuard): () => void',
'get(name: string, scope?: ScopeKey): ToolDefinition | undefined',
'schemas(scope?: ScopeKey): ToolSchema[]',
'executionMode(exec: ToolExecutionInput): ToolExecutionMode',
'async execute(exec: ToolExecutionInput): Promise<ToolExecutionResult>',
{
signature: 'register(definition: ToolDefinition): () => void',
jsDoc: '/**\n * Register globally or in the calling agent scope. Scoped tools shadow\n * globals; duplicates within one layer and the reserved `run_code` name fail.\n * @param definition - the tool schema, execution, and optional presentation functions.\n * @returns the exact disposer that unregisters the tool.\n */',
},
{
signature: 'restrict(filter: ToolRestriction): () => void',
jsDoc: '/**\n * Restrict global tools for the calling agent scope. Empty filters, unknown\n * names, scope-local names, and reserved transport names fail. Restrictions\n * intersect; scoped registrations remain visible.\n * @param filter - global-surface mask: `allow` (keep only) and/or `deny` (remove).\n * @returns the exact disposer that lifts this restriction.\n */',
},
{
signature: 'guard(guard: ToolGuard): () => void',
jsDoc: '/**\n * Register a monotonic guard after the extensible `tools/pre-execute`\n * waterfall. A plain-context guard applies globally; one registered through\n * `agent.ctx` applies only to that agent. Any matching guard may deny by\n * returning a reason, while no guard can force-allow a call another guard\n * denied. The exact effect disposer is returned for ordered ownership and\n * HMR cleanup.\n * @param guard - synchronous check; a returned string denies the execution.\n * @returns the exact disposer that unregisters the guard.\n */',
},
{
signature: 'get(name: string, scope?: ScopeKey): ToolDefinition | undefined',
jsDoc: '/**\n * Look up a tool as one scope sees it (scoped\n * shadows global; a restricted-away global reads as absent). Presenters pass\n * the calling agent so the rendered card matches the definition that\n * actually executed.\n * @param name - the tool name as registered.\n * @param scope - the viewing scope (the agent); omitted = the global view.\n * @returns the definition the scope resolves, or undefined when none is visible.\n */',
},
{
signature: 'schemas(scope?: ScopeKey): ToolSchema[]',
jsDoc: '/**\n * Project visible definitions onto the allowlisted model-facing schema fields,\n * excluding execution and presentation callbacks.\n * @param scope - the viewing scope (the agent); omitted = the global view.\n * @returns one deep-cloned schema per visible tool.\n */',
},
{
signature: 'executionMode(exec: ToolExecutionInput): ToolExecutionMode',
jsDoc: '/**\n * Classify a pending call through the caller\'s visible tool definition. Only\n * an exact `true` is parallel; unknown, hidden, undeclared, invalid, or\n * throwing classifiers are exclusive.\n * @param exec - call name, parsed arguments, and optional agent scope.\n * @returns the fail-closed scheduling mode.\n */',
},
{
signature: 'async execute(exec: ToolExecutionInput): Promise<ToolExecutionResult>',
jsDoc: '/**\n * Execute through pre-policy, guards, around-dispatch, post-policy, and final\n * notification. Tool and listener failures resolve as materialized error\n * results; an invisible tool reports `UNKNOWN_TOOL`. The returned outcome is\n * the same lossless, frozen snapshot final observers receive.\n * @param exec - the typed same-process call input. The registry assigns its\n * correlation token before policy begins.\n * @returns the materialized final result.\n */',
},
],
},
{
key: 'userInteraction',
summary: '`ctx.userInteraction`: one active UI provider plus an `ask()` surface.',
methods: [
'registerProvider(provider: UserInteractionProvider): () => void',
'async ask(request: AskUserQuestionRequest): Promise<AskUserQuestionAnswer>',
{
signature: 'registerProvider(provider: UserInteractionProvider): () => void',
jsDoc: '/**\n * Register the UI provider. Only one provider may be active in a context.\n *\n * @param provider UI-side implementation that collects answers.\n * @returns Disposer that unregisters this provider.\n */',
},
{
signature: 'async ask(request: AskUserQuestionRequest): Promise<AskUserQuestionAnswer>',
jsDoc: '/**\n * Ask the active UI provider and wait for the user\'s answer.\n *\n * @param request Questions, owner agent, and abort signal.\n * @returns The answer chosen or typed by the human.\n */',
},
],
},
{
key: 'web',
summary: 'The web access service.',
methods: [
'registerSearchProvider(provider: WebSearchProvider): () => void',
'registerFetchProvider(provider: WebFetchProvider): () => void',
'async search(request: WebSearchRequest, signal?: AbortSignal): Promise<WebSearchResult>',
'async fetch(request: WebFetchRequest, signal?: AbortSignal): Promise<WebFetchResult>',
{
signature: 'registerSearchProvider(provider: WebSearchProvider): () => void',
jsDoc: '/**\n * Register a search provider. Throws {@link WebError} `WEB_DUPLICATE_PROVIDER`\n * if its id is already registered for search. Returns a disposer; disposed\n * with the calling fiber.\n * @param provider - the provider; its `id` is the registry key.\n * @returns the disposer that unregisters the provider.\n */',
},
{
signature: 'registerFetchProvider(provider: WebFetchProvider): () => void',
jsDoc: '/**\n * Register a fetch provider. Throws {@link WebError} `WEB_DUPLICATE_PROVIDER`\n * if its id is already registered for fetch. Returns a disposer; disposed\n * with the calling fiber.\n * @param provider - the provider; its `id` is the registry key.\n * @returns the disposer that unregisters the provider.\n */',
},
{
signature: 'async search(request: WebSearchRequest, signal?: AbortSignal): Promise<WebSearchResult>',
jsDoc: '/**\n * Run one search through the selected provider. Resolves the provider at call\n * time with the selection rules above; throws {@link WebError} when the\n * capability cannot run. The seam enforces `request.maxResults` on the result:\n * if the provider over-returns, `sources[]` is truncated and `truncated` set.\n * @param request - the query plus result-shaping options.\n * @param signal - optional cancellation signal forwarded to the provider.\n * @returns the provider\'s results, capped to `request.maxResults`.\n */',
},
{
signature: 'async fetch(request: WebFetchRequest, signal?: AbortSignal): Promise<WebFetchResult>',
jsDoc: '/**\n * Retrieve one URL through the selected provider. Resolves the provider at\n * call time with the selection rules above; throws {@link WebError} when the\n * capability cannot run. A non-2xx response is a result, not a throw.\n * @param request - the URL plus retrieval options.\n * @param signal - optional cancellation signal forwarded to the provider.\n * @returns the retrieval outcome; non-2xx responses resolve descriptively.\n */',
},
],
},
{
key: 'workflows',
summary: 'Workflow execution seam.',
methods: [
'abstract start(request: WorkflowStartRequest): WorkflowRun',
{
signature: 'abstract start(request: WorkflowStartRequest): WorkflowRun',
jsDoc: '/**\n * Parse and execute a workflow script.\n * @param request - the script, its `args`, the parent agent, and an\n * optional cancel signal.\n * @returns the live run; its `result` resolves when the script settles.\n */',
},
],
},
]
@@ -299,240 +610,294 @@ export const EVENT_API: readonly EventApiEntry[] = [
name: 'agent-loop/config-start-failed',
mode: 'emit',
signature: '\'agent-loop/config-start-failed\'(sessionId: SessionId, error: unknown): void',
jsDoc: '/**\n * A declarative agent entry failed before it could publish a live agent.\n * Consumers that buffer work for the configured identity use this\n * transient signal to reject that work instead of waiting forever. Normal\n * factory teardown suppresses failures from the cancelled startup attempt.\n * @param sessionId - exact shared agent/session identity that failed startup.\n * @param error - persistence, setup, or publication failure.\n * @mode emit\n */',
summary: 'A declarative agent entry failed before it could publish a live agent.',
},
{
name: 'agent/created',
mode: 'emit',
signature: '\'agent/created\'(this: Scoped<Agent>, agent: Agent): void',
jsDoc: '/**\n * A fully configured agent and live session were published. Setup is\n * composition-only; `agent/session-start` is the first startup-driving seam.\n * Synchronous listener failure vetoes publication, while returned-promise\n * rejection is reported. Detach requested during dispatch waits until every\n * creation listener has observed the stable entry.\n * @param agent - the newly registered agent with its live session and completed setup.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode emit\n */',
summary: 'A fully configured agent and live session were published.',
},
{
name: 'agent/disposed',
mode: 'emit',
signature: '\'agent/disposed\'(this: Scoped<Agent>, agent: Agent): void',
jsDoc: '/**\n * An agent left the registry; AgentLoop emits this after driver quiescence\n * but before session detachment and scoped-registration unwind. Custom\n * registry users own their driver-ordering contract.\n * @param agent - the exact agent removed from the registry.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode emit\n */',
summary: 'An agent left the registry; AgentLoop emits this after driver quiescence but before session detachment and scoped-registration unwind.',
},
{
name: 'agent/error',
mode: 'emit',
signature: '\'agent/error\'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, error: Error): void',
jsDoc: '/**\n * A step or turn errored. The loop reports a failure here (plus the logger)\n * even when the error has no in-turn position for a session `error` event.\n * @param agent - the agent whose turn errored.\n * @param turn - the turn in which the failure surfaced.\n * @param step - the step at which the failure surfaced.\n * @param error - the failure, verbatim.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode emit\n */',
summary: 'A step or turn errored.',
},
{
name: 'agent/post-step',
mode: 'serial',
signature: '\'agent/post-step\'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, signal: AbortSignal): Promise<void> | void',
jsDoc: '/**\n * Awaited serial checkpoint after the response, real or synthetic tool\n * results, injected context, and steering are durable but before `step/end`.\n * A cancelled tool batch reaches this checkpoint with an aborted signal.\n * @param agent - the agent whose step is settling.\n * @param turn - the open turn number.\n * @param step - the open step number.\n * @param signal - the turn abort signal.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode serial\n */',
summary: 'Awaited serial checkpoint after the response, real or synthetic tool results, injected context, and steering are durable but before `step/end`.',
},
{
name: 'agent/pre-step',
mode: 'serial',
signature: '\'agent/pre-step\'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, fullSystemPrompt: string, sessionPrefix: readonly Message[], signal: AbortSignal): Promise<void> | void',
summary: 'Awaited serial checkpoint for session-surface mutation after prompt assembly and before `step/start`; appends land outside the pending step.',
signature: '\'agent/pre-step\'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, signal: AbortSignal): Promise<void> | void',
jsDoc: '/**\n * Awaited serial checkpoint before `step/start`; appends land outside the\n * pending step and are included when the loop derives request history.\n * `signal` cancels listener work.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @param agent - the agent opening the step.\n * @param turn - the open turn number.\n * @param step - the pending step number.\n * @param signal - the turn abort signal.\n * @mode serial\n */',
summary: 'Awaited serial checkpoint before `step/start`; appends land outside the pending step and are included when the loop derives request history.',
},
{
name: 'agent/prompt-submit',
mode: 'waterfall',
signature: '\'agent/prompt-submit\'(this: Scoped<Agent>, agent: Agent, content: ContentBlock[], source: MessageSource, next: () => Promise<PromptDecision>): Promise<PromptDecision>',
jsDoc: '/**\n * Allow, rewrite, or block one drained prompt before it becomes a user\n * message. Call `next()` for the unchanged default.\n * @param agent - the agent draining its inbox.\n * @param content - the drained message\'s blocks, as queued.\n * @param source - the message\'s resolved source.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode waterfall\n */',
summary: 'Allow, rewrite, or block one drained prompt before it becomes a user message.',
},
{
name: 'agent/queued',
mode: 'emit',
signature: '\'agent/queued\'(this: Scoped<Agent>, agent: Agent, content: ContentBlock[], info: { source: MessageSource; steering: boolean }): void',
jsDoc: '/**\n * Detached, frozen content entered the agent\'s inbox. Source defaults have\n * already been applied, so these are the exact values retained for the log.\n * @param agent - the agent whose inbox received the message.\n * @param content - the accepted content blocks retained by the inbox.\n * @param info - the accepted source plus whether it entered as steering.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode emit\n */',
summary: 'Detached, frozen content entered the agent\'s inbox.',
},
{
name: 'agent/request',
mode: 'waterfall',
signature: '\'agent/request\'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, config: LlmCallConfig, next: () => Promise<LlmCallConfig>): Promise<LlmCallConfig>',
jsDoc: '/**\n * Replace the frozen call configuration. Model-visible content must use\n * logged channels; this seam cannot mutate messages. Injection here joins\n * the next request because the current step boundary is already fixed.\n * @param agent - the agent making the model call.\n * @param turn - the open turn number.\n * @param step - the step whose request this is.\n * @param config - the config the loop would use (frozen); return a replacement to switch.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode waterfall\n */',
summary: 'Replace the frozen call configuration.',
},
{
name: 'agent/request-error',
mode: 'waterfall',
signature: '\'agent/request-error\'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, error: RequestError, retryAttempt: number, signal: AbortSignal, next: () => Promise<RequestErrorDecision>): Promise<RequestErrorDecision>',
jsDoc: '/**\n * Recover a model-request failure after its failed step has closed. `retry`\n * opens a new numbered step; `fail` preserves the original request error.\n * Call `next()` to delegate to the next recovery listener or the default.\n * @param agent - the agent whose request failed.\n * @param turn - the open turn number.\n * @param step - the failed step number.\n * @param error - the original model-request failure.\n * @param retryAttempt - zero-based number of prior recovery retries.\n * @param signal - the turn abort signal.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode waterfall\n */',
summary: 'Recover a model-request failure after its failed step has closed.',
},
{
name: 'agent/session-prefix',
mode: 'waterfall',
signature: '\'agent/session-prefix\'(this: Scoped<Agent>, agent: Agent, prefix: Message[], signal: AbortSignal, next: () => Promise<Message[]>): Promise<Message[]>',
jsDoc: '/**\n * Compose request-only messages placed before derived history. The frozen\n * result is computed once per loop instance, logged on its anchoring request\n * header, and reused so the provider prefix remains stable. Interrupted\n * composition is discarded. Composition precedes the first `agent/pre-step`\n * and request boundary, so listener appends join the current request.\n * Changing context belongs in history; contributors should prepend to\n * `await next()` to preserve registration order.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @param agent - the agent whose session prefix is being composed.\n * @param prefix - the frozen seed; return an extended replacement.\n * @param signal - aborts composition when the step is torn down.\n * @mode waterfall\n */',
summary: 'Compose request-only messages placed before derived history.',
},
{
name: 'agent/session-start',
mode: 'emit',
signature: '\'agent/session-start\'(this: Scoped<Agent>, agent: Agent, source: SessionStartSource): void',
jsDoc: '/**\n * The session lifecycle began, once before the first turn. Use\n * `agent.inject()` to seed model-facing context. This is a notification, not\n * a veto; disposal requested by a lifecycle owner is rechecked before the\n * driver starts.\n * @param agent - the agent whose session lifecycle began.\n * @param source - why the session started (fresh startup, resume, …).\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode emit\n */',
summary: 'The session lifecycle began, once before the first turn.',
},
{
name: 'agent/status',
mode: 'emit',
signature: '\'agent/status\'(this: Scoped<Agent>, agent: Agent, status: AgentStatus): void',
jsDoc: '/**\n * Agent status changed (`idle` ⇄ `running`, or → `disposed`). `send()` does\n * not enter `running` synchronously; drive lifecycle from this event.\n * @param agent - the agent whose status flipped.\n * @param status - the status just entered (the transition\'s destination).\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode emit\n */',
summary: 'Agent status changed (`idle` ⇄ `running`, or → `disposed`).',
},
{
name: 'agent/step-result',
mode: 'waterfall',
signature: '\'agent/step-result\'(this: Scoped<Agent>, agent: Agent, turn: number, step: number, message: Message, next: () => Promise<Message>): Promise<Message>',
jsDoc: '/**\n * Waterfall: post-process the assembled assistant {@link Message} before\n * tool dispatch (validation, content rewriting, …).\n * @param agent - the agent that received the step\'s response.\n * @param turn - the open turn number.\n * @param step - the step that produced the message.\n * @param message - the assistant message as assembled from the stream.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode waterfall\n */',
summary: 'Waterfall: post-process the assembled assistant Message before tool dispatch (validation, content rewriting, …).',
},
{
name: 'agent/turn-continuation',
mode: 'waterfall',
signature: '\'agent/turn-continuation\'(this: Scoped<Agent>, agent: Agent, turn: number, defaultDecision: ContinuationDecision, next: () => Promise<ContinuationDecision>): Promise<ContinuationDecision>',
jsDoc: '/**\n * Override whether the turn continues. The default continues after tool\n * calls or steering and stops otherwise; a continue reason becomes steering.\n * @param agent - the agent deciding whether to run another step.\n * @param turn - the turn being continued or stopped.\n * @param defaultDecision - what the loop would do absent an override.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode waterfall\n */',
summary: 'Override whether the turn continues.',
},
{
name: 'agent/turn-stop',
mode: 'serial',
signature: '\'agent/turn-stop\'(this: Scoped<Agent>, agent: Agent, turn: number): ContinuationStop | undefined',
jsDoc: '/**\n * Monotonic terminal-stop checkpoint after continuation and steering are\n * folded; a stop remains authoritative through turn close and flush:\n * steering queued in that window is discarded, while ordinary sends survive.\n * @param agent - the agent whose composed continuation outcome may be stopped.\n * @param turn - the turn at its terminal-stop checkpoint.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @mode serial\n */',
summary: 'Monotonic terminal-stop checkpoint after continuation and steering are folded; a stop remains authoritative through turn close and flush: steering queued in that window is discarded, while ordinary sends survive.',
},
{
name: 'approval/request',
mode: 'waterfall',
signature: '\'approval/request\'(this: Scoped<ApprovalService>, req: ApprovalRequest, next: () => Promise<ApprovalOutcome>): Promise<ApprovalOutcome>',
jsDoc: '/**\n * Ask composed answerers for one decision. Return an outcome to claim the\n * request or call `next()`; failure yields the fail-closed default.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent.\n * @param req - the pending decision (agent, tool identity, reason, signal).\n * @mode waterfall\n */',
summary: 'Ask composed answerers for one decision.',
},
{
name: 'fs/edit-intent',
mode: 'waterfall',
signature: '\'fs/edit-intent\'(target: FsTarget, actor: object | undefined, next: () => { version: FsVersion } | undefined | Promise<{ version: FsVersion } | undefined>): Promise<{ version: FsVersion } | undefined>',
jsDoc: '/**\n * Single-slot decision for the next {@link FileSystem.editText}. Calling\n * `next()` yields an unconditional edit; the first returned guard wins.\n * @param target - the resolved target about to be edited.\n * @param actor - the opaque tool-execution context the decider keys off.\n * @mode waterfall\n */',
summary: 'Single-slot decision for the next FileSystem.editText.',
},
{
name: 'fs/observed',
mode: 'emit',
signature: '\'fs/observed\'(target: FsTarget, version: FsVersion, actor: object | undefined): void',
jsDoc: '/**\n * Record a successful observation. Listeners must be synchronous recorders:\n * throws fail the tool call and returned promises are not awaited.\n * @param target - the target that was read/written/edited.\n * @param version - the version the actor now holds as its observation.\n * @param actor - the observing tool-execution context; undefined records nothing useful.\n * @mode emit\n */',
summary: 'Record a successful observation.',
},
{
name: 'fs/write-intent',
mode: 'waterfall',
signature: '\'fs/write-intent\'(target: FsTarget, actor: object | undefined, next: () => FsWriteIntent | undefined | Promise<FsWriteIntent | undefined>): Promise<FsWriteIntent | undefined>',
jsDoc: '/**\n * Single-slot decision for the next {@link FileSystem.writeText}. Calling\n * `next()` yields the bare provider\'s unconditional write; the first listener\n * that returns an intent owns the decision rather than composing with peers.\n * @param target - the resolved target about to be written.\n * @param actor - the opaque tool-execution context the decider keys off.\n * @mode waterfall\n */',
summary: 'Single-slot decision for the next FileSystem.writeText.',
},
{
name: 'llm/stream',
mode: 'waterfall',
signature: '\'llm/stream\'(this: LlmService, options: GenerateOptions, next: () => AsyncIterable<StreamChunk>): AsyncIterable<StreamChunk>',
jsDoc: '/**\n * Waterfall around every streaming model call (retry, replay, routing).\n * Bound to the {@link LlmService}; call `next()` to reach the resolved\n * adapter\'s stream, or yield your own chunks to short-circuit.\n * @param options - the full request. A LOOP-built request arrives\n * deep-frozen (mutation throws): its content is a pure function of the\n * session log (the reconstructability RFC), so listeners read it, never\n * rewrite it. A hand-built one-shot (compaction summarize) is the\n * caller\'s own object and stays mutable here.\n * @mode waterfall\n */',
summary: 'Waterfall around every streaming model call (retry, replay, routing).',
},
{
name: 'session/created',
mode: 'emit',
signature: '\'session/created\'(this: Scoped<Session>, session: Session): void',
jsDoc: '/**\n * Creation announcement during session publication. A synchronous throw vetoes and rolls\n * back with a paired disposal; detach requested during dispatch is deferred.\n * A returned-promise rejection is logged but cannot retroactively veto this\n * synchronous boundary.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners\n * receive only sessions entered through that agent\'s context.\n * @param session - the session just entered and announced.\n * @dshScopeScan unsupported\n * @mode emit\n */',
summary: 'Creation announcement during session publication.',
},
{
name: 'session/disposed',
mode: 'emit',
signature: '\'session/disposed\'(this: Scoped<Session>, session: Session): void',
jsDoc: '/**\n * Emitted once when an announced session leaves the store, including\n * publication rollback, but never for an entry whose creation announcement\n * did not begin. Listener failures are logged and contained.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`) reuses the owner scope.\n * @param session - the session that is no longer live in the store.\n * @dshScopeScan unsupported\n * @mode emit\n */',
summary: 'Emitted once when an announced session leaves the store, including publication rollback, but never for an entry whose creation announcement did not begin.',
},
{
name: 'session/event',
mode: 'emit',
signature: '\'session/event\'(this: Scoped<Session>, session: Session, event: SessionEvent): void',
jsDoc: '/**\n * Post-commit, fire-and-forget append feed. The listener snapshot resolves\n * before the log push, but callbacks run after it; observer failures are\n * logged and contained without making the committed append fail.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners\n * receive only events from sessions entered through that agent\'s context.\n * @param session - the session whose log grew.\n * @param event - the appended event, exactly as recorded.\n * @dshScopeScan unsupported\n * @mode emit\n */',
summary: 'Post-commit, fire-and-forget append feed.',
},
{
name: 'session/flush',
mode: 'parallel',
signature: '\'session/flush\'(this: Scoped<Session>, session: Session): Promise<void> | void',
jsDoc: '/**\n * Awaited parallel durability checkpoint: every listener runs and the\n * caller awaits all of them, with no waterfall veto. Dispatch through\n * {@link SessionStore.flush}. Scope-filtered dispatch\n * (`@deepseek-ai/dsh-scope`) reuses the session\'s owner scope.\n * @param session - the session whose buffered events must reach durable storage.\n * @dshScopeScan unsupported\n * @mode parallel\n */',
summary: 'Awaited parallel durability checkpoint: every listener runs and the caller awaits all of them, with no waterfall veto.',
},
{
name: 'subagent/end',
mode: 'emit',
signature: '\'subagent/end\'(this: Scoped<SubagentService>, info: SubagentRunEndInfo): void',
jsDoc: '/**\n * A ready child settled. Scope-filtered dispatch uses the same delegating\n * parent carrier as `subagent/start`, so the lifecycle pair reaches the\n * same scoped audience.\n * @param info - the run identity and terminal outcome.\n * @dshScopeScan unsupported\n * @mode emit\n */',
summary: 'A ready child settled.',
},
{
name: 'subagent/provider-added',
mode: 'emit',
signature: '\'subagent/provider-added\'(provider: SubagentProvider): void',
jsDoc: '/**\n * A provider became resolvable in the registry.\n * @param provider - the registered provider.\n * @mode emit\n */',
summary: 'A provider became resolvable in the registry.',
},
{
name: 'subagent/provider-removed',
mode: 'emit',
signature: '\'subagent/provider-removed\'(name: string): void',
jsDoc: '/**\n * A provider left the registry. Accepted runs remain holder-owned.\n * @param name - the provider name that no longer resolves.\n * @mode emit\n */',
summary: 'A provider left the registry.',
},
{
name: 'subagent/start',
mode: 'emit',
signature: '\'subagent/start\'(this: Scoped<SubagentService>, info: SubagentRunInfo): void',
jsDoc: '/**\n * A provider established a ready child. For in-process providers,\n * `ctx.agents.get(info.id)` resolves during this notification.\n * Scope-filtered dispatch keys the carrier by the delegating parent, so a\n * parent-scoped listener observes only its own delegations. Paired with\n * `subagent/end`.\n * @param info - the provider and ready child identity.\n * @dshScopeScan unsupported\n * @mode emit\n */',
summary: 'A provider established a ready child.',
},
{
name: 'system-prompt/assemble',
mode: 'waterfall',
signature: '\'system-prompt/assemble\'(this: Scoped<SystemPrompt>, assembly: PromptAssembly, context: AssembleContext, next: () => Promise<PromptAssembly>): Promise<PromptAssembly>',
jsDoc: '/**\n * Expert waterfall over the assembled sections, tools, and variables.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): scoped listeners\n * receive only that scope\'s assemblies. The returned value is authoritative.\n * @param assembly - the mutable assembly built from registered providers.\n * @param context - the caller\'s per-assembly context.\n * @mode waterfall\n */',
summary: 'Expert waterfall over the assembled sections, tools, and variables.',
},
{
name: 'system-prompt/change',
mode: 'emit',
signature: '\'system-prompt/change\'(): void',
jsDoc: '/**\n * Emitted when any prompt provider changes. This registry notification is\n * unfiltered because a global change affects every scope.\n * @mode emit\n */',
summary: 'Emitted when any prompt provider changes.',
},
{
name: 'tools/change',
mode: 'emit',
signature: '\'tools/change\'(): void',
jsDoc: '/**\n * A tool was registered or unregistered, or a scoped restriction changed\n * (the available tool set changed — possibly for one scope only). An\n * UNFILTERED registry-subject notification, deliberately not scope-filtered\n * dispatch: a global change concerns every agent\'s next assembly, so a\n * scoped listener subscribing here sees every change, not just its own\n * scope\'s.\n * @mode emit\n */',
summary: 'A tool was registered or unregistered, or a scoped restriction changed (the available tool set changed — possibly for one scope only).',
},
{
name: 'tools/execute',
mode: 'waterfall',
signature: '\'tools/execute\'(this: Scoped<ToolRegistry>, exec: ToolExecution, next: () => Promise<ToolExecutionResult>): Promise<ToolExecutionResult>',
jsDoc: '/**\n * Around-dispatch waterfall for timeout, retry, or metrics. `next()` returns\n * a normalized result; wrappers may change only `exec.signal`, while call\n * identity remains immutable.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent\'s calls.\n * @param exec - the allowed call about to dispatch (name, parsed arguments, caller agent, signal).\n * @mode waterfall\n */',
summary: 'Around-dispatch waterfall for timeout, retry, or metrics.',
},
{
name: 'tools/post-execute',
mode: 'waterfall',
signature: '\'tools/post-execute\'(this: Scoped<ToolRegistry>, exec: ToolExecution, result: Readonly<ToolExecutionResult>, next: () => Promise<PostToolDecision>): Promise<PostToolDecision>',
jsDoc: '/**\n * Accept, replace, enrich, or block a normalized dispatch result. `next()`\n * accepts it unchanged; thrown tools still reach this seam as errors.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent\'s calls.\n * @param exec - the call that just ran (name, parsed arguments, caller agent).\n * @param result - the dispatch outcome a listener may accept, replace, or block.\n * @mode waterfall\n */',
summary: 'Accept, replace, enrich, or block a normalized dispatch result.',
},
{
name: 'tools/pre-execute',
mode: 'waterfall',
signature: '\'tools/pre-execute\'(this: Scoped<ToolRegistry>, exec: ToolExecution, next: () => Promise<PreToolDecision>): Promise<PreToolDecision>',
jsDoc: '/**\n * Allow, deny, or ask before dispatch. `next()` delegates to allow; missing\n * approval support turns `ask` into denial.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent\'s calls.\n * @param exec - the pending call (name, parsed arguments, caller agent).\n * @mode waterfall\n */',
summary: 'Allow, deny, or ask before dispatch.',
},
{
name: 'tools/result',
mode: 'emit',
signature: '\'tools/result\'(this: Scoped<ToolRegistry>, exec: Readonly<ToolExecution>, result: Readonly<ToolExecutionResult>): undefined',
jsDoc: '/**\n * Observe the frozen, lossless-JSON final outcome. Listener failures are contained.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): keyed by `exec.agent`.\n * @param exec - the execution object that traversed the pipeline.\n * @param result - a deep-frozen snapshot of the final returned result.\n * @mode emit\n */',
summary: 'Observe the frozen, lossless-JSON final outcome.',
},
{
name: 'workflow/agent-end',
mode: 'emit',
signature: '\'workflow/agent-end\'(info: WorkflowRunInfo, agent: WorkflowAgentEndInfo): void',
jsDoc: '/**\n * One `agent()` call settled (clean result, child failure, or run\n * cancellation). Paired with {@link Events[\'workflow/agent-start\']} by\n * `agent.seq`, exactly once per started call on every stop path — on an\n * engine termination path (a worker killed past its grace) the end is\n * engine-synthesized with outcome `\'cancelled\'`.\n * @param info - the run\'s identity snapshot.\n * @param agent - the call identity plus its outcome.\n * @mode emit\n */',
summary: 'One `agent()` call settled (clean result, child failure, or run cancellation).',
},
{
name: 'workflow/agent-start',
mode: 'emit',
signature: '\'workflow/agent-start\'(info: WorkflowRunInfo, agent: WorkflowAgentInfo): void',
jsDoc: '/**\n * One `agent()` call established a ready child run. Paired with\n * {@link Events[\'workflow/agent-end\']} by `agent.seq`. A call that never\n * receives a ready run from the provider emits neither\n * event in this pair.\n * @param info - the run\'s identity snapshot.\n * @param agent - the call\'s sequence number, label, phase, and child id.\n * @mode emit\n */',
summary: 'One `agent()` call established a ready child run.',
},
{
name: 'workflow/end',
mode: 'emit',
signature: '\'workflow/end\'(info: WorkflowRunInfo, result: WorkflowResultInfo): void',
jsDoc: '/**\n * A workflow run settled (any stop reason). Fired when\n * {@link WorkflowRun.result} resolves. Paired with\n * {@link Events[\'workflow/start\']}.\n * @param info - the run\'s identity snapshot.\n * @param result - the outcome data (stop reason, error, agent count) —\n * deliberately WITHOUT the result value (see {@link WorkflowResultInfo}).\n * @mode emit\n */',
summary: 'A workflow run settled (any stop reason).',
},
{
name: 'workflow/log',
mode: 'emit',
signature: '\'workflow/log\'(info: WorkflowRunInfo, message: string): void',
jsDoc: '/**\n * The script emitted a narration line (a `log(message)` call).\n * @param info - the run\'s identity snapshot.\n * @param message - the logged message, verbatim.\n * @mode emit\n */',
summary: 'The script emitted a narration line (a `log(message)` call).',
},
{
name: 'workflow/phase',
mode: 'emit',
signature: '\'workflow/phase\'(info: WorkflowRunInfo, title: string): void',
jsDoc: '/**\n * The script entered a phase (a `phase(title)` call) — progress grouping\n * for observers; no execution semantics.\n * @param info - the run\'s identity snapshot.\n * @param title - the phase title, verbatim.\n * @mode emit\n */',
summary: 'The script entered a phase (a `phase(title)` call) — progress grouping for observers; no execution semantics.',
},
{
name: 'workflow/start',
mode: 'emit',
signature: '\'workflow/start\'(info: WorkflowRunInfo): void',
jsDoc: '/**\n * A workflow run started — the script\'s meta block validated, the body\n * about to execute. Paired with {@link Events[\'workflow/end\']}.\n * @param info - the run\'s identity snapshot (id + meta).\n * @mode emit\n */',
summary: 'A workflow run started — the script\'s meta block validated, the body about to execute.',
},
]
@@ -677,12 +1042,16 @@ export const TYPE_API: readonly TypeApiEntry[] = [
},
{
name: 'CompactAgentContext',
declaration: 'export interface CompactAgentContext {\n session: Session;\n options: {\n model?: string;\n };\n}',
declaration: 'export interface CompactAgentContext {\n session: Session;\n options: {\n provider?: string;\n model?: string;\n };\n}',
},
{
name: 'CompactionResult',
declaration: 'export interface CompactionResult {\n startSeq: number;\n summarySeq: number;\n endSeq: number;\n summary: ContentBlock[];\n shadowedRange: {\n start: number;\n end: number;\n };\n shadowedSeqs: number[];\n shadowedTokenCount: number;\n}',
},
{
name: 'CompactionTrigger',
declaration: 'export type CompactionTrigger = \'pressure\' | \'context-overflow\';',
},
{
name: 'ConfinedArgv',
declaration: 'export interface ConfinedArgv {\n argv: string[];\n enforcement: SandboxEnforcement;\n denialSignatures: readonly string[];\n runnerFailureSignatures: readonly string[];\n}',

18
packages/cordis/tool-cordis/src/index.ts
View File

@@ -12,9 +12,9 @@ import z from 'schemastery'
import { defineTool } from '@deepseek-ai/dsh-tools'
import { STATE_LABELS } from './fiber-state.ts'
import { isPlugin, pluginName } from './guard.ts'
import { EVENT_API, INHERITED_CTX_API, SERVICE_API, TYPE_API } from './api-catalog.ts'
import { describeApi, describeDynamic, describeEvents, describePlugins, describeServices, describeTools } from './inspect.ts'
import { missingServices, mountDynamic } from './mount.ts'
import type { DynamicMount } from './mount.ts'
import { missingServices, mountDynamic, type DynamicMount } from './mount.ts'
import { presentInspectCall, presentMountCall, presentUnmountCall } from './present.ts'
import { createSandbox, evaluateMountCode } from './sandbox.ts'
@@ -63,15 +63,23 @@ export function apply(ctx: Context, config: Config): void {
+ '`dynamic` (plugins you mounted via cordis_mount: id, name, state, provided services, awaited services), '
+ '`api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), '
+ '`events` (every harness event with its dispatch mode and exact signature — pick listener targets here). '
+ 'Omit `what` to get all six sections.',
+ 'Omit `what` to get all six sections. With `what:"api"` or `what:"events"`, pass an exact `name` '
+ 'to narrow to one service/event and include its original source JSDoc.',
parameters: {
what: {
type: 'string',
enum: ['services', 'plugins', 'tools', 'dynamic', 'api', 'events'],
description: 'Limit the report to one section. Omit for all sections.',
},
name: {
type: 'string',
description: 'Exact service key or event name whose original JSDoc to include; valid only with what:"api" or what:"events".',
},
},
execute(args, exec): Promise<{ type: 'text'; text: string }[]> {
if (args.name !== undefined && args.what !== 'api' && args.what !== 'events') {
throw new Error('name is valid only with what:"api" or what:"events"')
}
const sections: [heading: string, body: () => string[]][] = [
['services', () => describeServices(ctx)],
['plugins', () => describePlugins(ctx)],
@@ -79,8 +87,8 @@ export function apply(ctx: Context, config: Config): void {
// globals absent — "what you can call", not the global registry.
['tools', () => describeTools(ctx, exec.agent)],
['dynamic', () => describeDynamic(ctx, mounts)],
['api', () => describeApi(ctx)],
['events', () => describeEvents()],
['api', () => describeApi(ctx, SERVICE_API, INHERITED_CTX_API, TYPE_API, args.name)],
['events', () => describeEvents(EVENT_API, args.name)],
]
const selected = sections.filter(([heading]) => args.what === undefined || args.what === heading)
const text = selected

71
packages/cordis/tool-cordis/src/inspect.ts
View File

@@ -1,7 +1,8 @@
/**
* Read-only renderers over the live runtime for `cordis_inspect`: the service list, the flat
* plugin list, the registered tools, the dynamic-mount table (with per-mount provides/waits),
* and the catalog-backed `api` / `events` sections.
* and the catalog-backed `api` / `events` sections. Exact-name lookups add the
* original source JSDoc without inflating the default reports.
* @module @deepseek-ai/dsh-tool-cordis/inspect
*/
@@ -126,6 +127,18 @@ function typeClosure(seeds: string[], types: readonly TypeApiEntry[]): TypeApiEn
return [...included.values()].sort((a, b) => a.name.localeCompare(b.name))
}
/** Render one catalogued service, optionally including source-owned method JSDoc. */
function serviceLines(entry: ServiceApiEntry, detailed: boolean): string[] {
const lines = [`- ${entry.key} — ${entry.summary}`]
for (const method of entry.methods) {
if (detailed) {
for (const docLine of method.jsDoc.split('\n')) lines.push(` ${docLine}`)
}
lines.push(` ${method.signature}`)
}
return lines
}
/**
* Render the generated catalog against the live runtime: live catalogued services with methods,
* uncatalogued live services with owners, absent loadable services, referenced type shapes, and
@@ -134,6 +147,7 @@ function typeClosure(seeds: string[], types: readonly TypeApiEntry[]): TypeApiEn
* @param api - generated service entries, replaceable in tests.
* @param inherited - inherited `ctx` entries, replaceable in tests.
* @param types - public type shapes, replaceable in tests.
* @param name - exact live service key whose methods should include original JSDoc; omitted for the compact catalog.
* @returns the section lines.
*/
export function describeApi(
@@ -141,25 +155,33 @@ export function describeApi(
api: readonly ServiceApiEntry[] = SERVICE_API,
inherited: readonly InheritedApiEntry[] = INHERITED_CTX_API,
types: readonly TypeApiEntry[] = TYPE_API,
name?: string,
): string[] {
const live = new Map<string, string>()
for (const impl of liveImpls(ctx)) live.set(impl.name, impl.fiber.name)
const lines: string[] = []
const liveMethodTexts: string[] = []
for (const entry of api) {
if (!live.has(entry.key)) continue
lines.push(`- ${entry.key} — ${entry.summary}`)
let selected = api.filter(entry => live.has(entry.key))
if (name !== undefined) {
const entry = api.find(candidate => candidate.key === name)
if (!entry) throw new Error(`no catalogued service named "${name}"`)
if (!live.has(name)) throw new Error(`catalogued service "${name}" is not running`)
selected = [entry]
}
for (const entry of selected) {
lines.push(...serviceLines(entry, name !== undefined))
for (const method of entry.methods) {
lines.push(` ${method}`)
liveMethodTexts.push(method)
liveMethodTexts.push(method.signature)
}
}
const catalogued = new Set(api.map(entry => entry.key))
for (const [name, fiber] of [...live].sort(([a], [b]) => a.localeCompare(b))) {
if (!catalogued.has(name)) lines.push(`- ${name} (provided by ${fiber}, no catalog entry)`)
if (name === undefined) {
const catalogued = new Set(api.map(entry => entry.key))
for (const [liveName, fiber] of [...live].sort(([a], [b]) => a.localeCompare(b))) {
if (!catalogued.has(liveName)) lines.push(`- ${liveName} (provided by ${fiber}, no catalog entry)`)
}
const notRunning = api.filter(entry => !live.has(entry.key)).map(entry => entry.key)
if (notRunning.length > 0) lines.push(`not running (loadable services with no live provider): ${notRunning.join(', ')}`)
}
const notRunning = api.filter(entry => !live.has(entry.key)).map(entry => entry.key)
if (notRunning.length > 0) lines.push(`not running (loadable services with no live provider): ${notRunning.join(', ')}`)
const shapes = typeClosure(liveMethodTexts, types)
if (shapes.length > 0) {
lines.push('type shapes (referenced by the signatures above — read these before assuming a field is a string):')
@@ -167,8 +189,10 @@ export function describeApi(
for (const declLine of shape.declaration.split('\n')) lines.push(` ${declLine}`)
}
}
lines.push('inherited ctx API:')
for (const entry of inherited) lines.push(`- ${entry.name} — ${entry.summary}`)
if (name === undefined) {
lines.push('inherited ctx API:')
for (const entry of inherited) lines.push(`- ${entry.name} — ${entry.summary}`)
}
return lines
}
@@ -176,13 +200,24 @@ export function describeApi(
* The `events` section: every harness event with its dispatch mode, one-line
* summary, and exact signature, closed by the waterfall caution.
* @param events - the event catalog (the generated one by default; injectable for tests).
* @param name - exact event name whose signature should include original JSDoc; omitted for the compact catalog.
* @returns the section lines.
*/
export function describeEvents(events: readonly EventApiEntry[] = EVENT_API): string[] {
const lines = events.flatMap(event => [
`- ${event.name} [${event.mode}] — ${event.summary}`,
` ${event.signature}`,
])
export function describeEvents(events: readonly EventApiEntry[] = EVENT_API, name?: string): string[] {
let selected = events
if (name !== undefined) {
const event = events.find(candidate => candidate.name === name)
if (!event) throw new Error(`no catalogued event named "${name}"`)
selected = [event]
}
const lines = selected.flatMap((event) => {
const entry = [`- ${event.name} [${event.mode}] — ${event.summary}`]
if (name !== undefined) {
for (const docLine of event.jsDoc.split('\n')) entry.push(` ${docLine}`)
}
entry.push(` ${event.signature}`)
return entry
})
lines.push('waterfall listeners receive a trailing next() and MUST call it to delegate — returning without next() vetoes the chain.')
return lines
}

5
packages/cordis/tool-cordis/src/present.ts
View File

@@ -15,11 +15,12 @@ import type { GenericCallView } from '@deepseek-ai/dsh-tools'
* @param args - the validated call arguments.
* @returns the generic card the ACP bridge renders.
*/
export function presentInspectCall(args: { what?: string }): GenericCallView {
export function presentInspectCall(args: { what?: string; name?: string }): GenericCallView {
const target = args.name === undefined ? args.what : `${args.what}: ${args.name}`
return {
card: 'generic',
kind: 'read',
title: args.what === undefined ? 'Inspect cordis runtime' : `Inspect cordis runtime: ${args.what}`,
title: target === undefined ? 'Inspect cordis runtime' : `Inspect cordis runtime: ${target}`,
}
}

57
packages/cordis/tool-cordis/tests/inspect.spec.ts
View File

@@ -64,6 +64,24 @@ describe('cordis_inspect', () => {
// The inherited ctx surface closes the section.
expect(report).toContain('inherited ctx API:')
expect(report).toContain('- ctx.effect — ')
// The broad report stays compact; exact-name lookup owns full JSDoc.
expect(report).not.toContain('/**')
expect(report).not.toContain('@param definition')
})
it('adds original method JSDoc only for an exact live api name', async () => {
const ctx = await setup()
const report = text(await call(ctx, 'cordis_inspect', { what: 'api', name: 'tools' }))
expect(report).toContain('## api')
expect(report).toContain('- tools — Tool registry and execution pipeline.')
expect(report).toContain('/**')
expect(report).toContain('Register globally or in the calling agent scope.')
expect(report).toContain('@param definition - the tool schema')
expect(report).toContain('@returns the exact disposer')
expect(report).toContain('register(definition: ToolDefinition)')
expect(report).toContain('type shapes (referenced by the signatures above')
expect(report).not.toContain('not running (loadable services')
expect(report).not.toContain('inherited ctx API:')
})
it('renders the events section with mode badges, signatures, and the waterfall caution', async () => {
@@ -73,6 +91,39 @@ describe('cordis_inspect', () => {
expect(report).toContain('- tools/pre-execute [waterfall]')
expect(report).toMatch(/'agent\/status'\(/)
expect(report).toContain('returning without next() vetoes the chain')
expect(report).not.toContain('/**')
expect(report).not.toContain('@mode waterfall')
})
it('adds original event JSDoc only for an exact event name', async () => {
const ctx = await setup()
const report = text(await call(ctx, 'cordis_inspect', { what: 'events', name: 'tools/pre-execute' }))
expect(report).toContain('## events')
expect(report).toContain('- tools/pre-execute [waterfall]')
expect(report).toContain('/**')
expect(report).toContain('Allow, deny, or ask before dispatch.')
expect(report).toContain('@param exec - the pending call')
expect(report).toContain('@mode waterfall')
expect(report).not.toContain('- tools/change [emit]')
})
it('fails loud for incompatible, unknown, and non-running names', async () => {
const ctx = await setup()
const incompatible = await call(ctx, 'cordis_inspect', { what: 'tools', name: 'tools' })
expect(incompatible.isError).toBe(true)
expect(text(incompatible)).toContain('name is valid only with what:"api" or what:"events"')
const unknownService = await call(ctx, 'cordis_inspect', { what: 'api', name: 'not-a-service' })
expect(unknownService.isError).toBe(true)
expect(text(unknownService)).toContain('no catalogued service named "not-a-service"')
const nonRunning = await call(ctx, 'cordis_inspect', { what: 'api', name: 'bash' })
expect(nonRunning.isError).toBe(true)
expect(text(nonRunning)).toContain('catalogued service "bash" is not running')
const unknownEvent = await call(ctx, 'cordis_inspect', { what: 'events', name: 'not/an-event' })
expect(unknownEvent.isError).toBe(true)
expect(text(unknownEvent)).toContain('no catalogued event named "not/an-event"')
})
})
@@ -102,7 +153,11 @@ describe('inspect renderers (direct)', () => {
it('describeApi omits the not-running line and type shapes when nothing applies', async () => {
const ctx = await setup()
const lines = describeApi(ctx, [{ key: 'tools', summary: 'The registry.', methods: ['register(x): void'] }], [], [])
const lines = describeApi(ctx, [{
key: 'tools',
summary: 'The registry.',
methods: [{ signature: 'register(x): void', jsDoc: '/** Register x. */' }],
}], [], [])
expect(lines[0]).toBe('- tools — The registry.')
expect(lines[1]).toBe(' register(x): void')
expect(lines.join('\n')).not.toContain('not running')

8
packages/cordis/tool-cordis/tests/present.spec.ts
View File

@@ -11,6 +11,11 @@ describe('presenters', () => {
it('cordis_inspect renders a generic read card titled with the section', () => {
expect(presentInspectCall({})).toEqual({ card: 'generic', kind: 'read', title: 'Inspect cordis runtime' })
expect(presentInspectCall({ what: 'api' })).toEqual({ card: 'generic', kind: 'read', title: 'Inspect cordis runtime: api' })
expect(presentInspectCall({ what: 'events', name: 'tools/change' })).toEqual({
card: 'generic',
kind: 'read',
title: 'Inspect cordis runtime: events: tools/change',
})
})
it('cordis_mount renders a generic execute card carrying the code as raw input', () => {
@@ -33,6 +38,9 @@ describe('presenters', () => {
kind: 'read',
title: 'Inspect cordis runtime: tools',
})
expect(ctx.tools.get('cordis_inspect')!.presentCall!({ what: 'api', name: 'tools' })).toMatchObject({
title: 'Inspect cordis runtime: api: tools',
})
expect(ctx.tools.get('cordis_mount')!.presentCall!({ code: 'return 1' })).toMatchObject({ kind: 'execute' })
expect(ctx.tools.get('cordis_unmount')!.presentCall!({ id: 'dyn-2' })).toMatchObject({ title: 'Unmount dyn-2' })
// Soft validation: presenter args that fail the schema render as no card, never a throw.

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