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Merge remote-tracking branch 'origin/master' into codex/pr270-retarget-20260720

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# Conflicts:
#	website/.vitepress/config/api-sidebar.json
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Tianyi Cui
2026-07-20 17:38:27 +08:00
parent 818ebb6406 b8826c9e9a
commit b668d67dc9
54 changed files with 1513 additions and 85 deletions
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2
docs/agent-lifecycle.md
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@@ -64,7 +64,7 @@ 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.
`dsh-compact-basic` uses `agent/post-step` for pressure after those durable facts and `agent/request-error` only for canonical context overflow. Once either trigger qualifies, optional tool-result pruning runs before summary selection. Recovery works between the closed failed step and a fresh retry step, and returns retry only when pruning or summarization advances the surface replacement generation; 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.

4
docs/architecture.md
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@@ -32,7 +32,7 @@ A harness is one [Cordis](cordis-primer.md) context. Packages add services (`ctx
| `ctx.fs` | [`fs/`](../packages/fs/README.md) | filesystem provider primitives and policy events |
| `ctx.skills` | [`skill/`](../packages/skill/README.md) | skill provider registry and progressive disclosure |
| `ctx.web` | [`web/`](../packages/web/README.md) | search/fetch provider registries |
| `ctx.compact` | [`compact/`](../packages/compact/README.md) | session-log compaction |
| `ctx.compact`, `ctx.toolResultPrune` | [`compact/`](../packages/compact/README.md)/[`compact-tool-result-prune`](../packages/compact/compact-tool-result-prune/README.md) | summary compaction; optional model-free result pruning |
| `ctx.subagents` | [`subagent/`](../packages/subagent/README.md) | named delegation providers |
| `ctx.tasks` | [`tasks/`](../packages/tasks/README.md) | background task registry + generic `task_*` control tools |
| `ctx.workflows` | [`workflow/`](../packages/workflow/README.md) | script-driven multi-agent orchestration |
@@ -111,7 +111,7 @@ Each step assembles ordered prompt sections, tool schemas, and `{{name}}` variab
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 checkpoints; retry requires a balanced surface replacement ([decision](../.agents/notes/implemented/architecture/2026-07-10-after-call-compaction-pressure-and-overflow-recovery.md)).
Optional pruning precedes summaries; retry requires durable surface progress; cancellation wins ([decision](../.agents/notes/implemented/architecture/2026-07-10-after-call-compaction-pressure-and-overflow-recovery.md)).
### Failure Boundaries

5
docs/capability-seams.md
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@@ -16,6 +16,8 @@ flowchart LR
pkg_compact_basic["compact-basic"]
pkg_token_meter["token-meter"]
svc_tokenMeter["ctx.tokenMeter<br/>Replay token measurement"]
pkg_compact_tool_result_prune["compact-tool-result-prune"]
svc_toolResultPrune["ctx.toolResultPrune<br/>Model-free tool-result pruning"]
pkg_session["session"]
svc_sessions["ctx.sessions<br/>In-memory session store"]
pkg_agent["agent"]
@@ -110,6 +112,7 @@ flowchart LR
pkg_code_runtime_worker --> svc_codeRuntime
pkg_compact --> svc_compact
pkg_compact_basic --> svc_compact
pkg_compact_tool_result_prune --> svc_toolResultPrune
pkg_fs --> svc_fs
pkg_fs_local --> svc_fs
pkg_fs_sandbox --> svc_fs
@@ -193,6 +196,7 @@ flowchart LR
svc_tasks --> pkg_tool_subagent
svc_tasks --> pkg_tool_tasks
svc_tokenMeter --> pkg_compact_basic
svc_toolResultPrune --> pkg_compact_basic
svc_tools --> pkg_acp
svc_tools --> pkg_agent_loop
svc_tools --> pkg_tool_ask_user
@@ -215,6 +219,7 @@ 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.toolResultPrune` | `core` | [`compact-tool-result-prune`](../packages/compact/compact-tool-result-prune) | - | [`compact-basic`](../packages/compact/compact-basic) | - | Rewrites oversized current tool results through replayable single-node surface replacements before summary compaction. |
| `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. |

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docs/config-catalog.md
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@@ -303,6 +303,22 @@ export interface BasicCompactConfig {
Source: [`packages/compact/compact-basic/src/types.ts:8`](../packages/compact/compact-basic/src/types.ts)
## `@deepseek-ai/dsh-compact-tool-result-prune`
```ts config-catalog
/** Character-budget policy for deterministic tool-result pruning. */
export interface ToolResultPruneConfig {
/** Prune when total text exceeds this many Unicode code points. Defaults to `8192`. */
thresholdChars?: number
/** Maximum leading Unicode code points retained. Defaults to `4096`. */
headChars?: number
/** Maximum trailing Unicode code points retained. Defaults to `1024`. */
tailChars?: number
}
```
Source: [`packages/compact/compact-tool-result-prune/src/types.ts:4`](../packages/compact/compact-tool-result-prune/src/types.ts)
## `@deepseek-ai/dsh-fs-local`
```ts config-catalog

37
docs/cordis-catalog/services.md
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@@ -1120,6 +1120,43 @@ Types: [EpochHeader](../core-data-structures/session.md) · [Message](../core-da
Source: [`packages/llm/token-meter/src/index.ts:106`](../../packages/llm/token-meter/src/index.ts)
## `ctx.toolResultPrune` — `ToolResultPruneService`
Deterministic head/middle/tail pruning for current tool-result surface nodes.
```ts cordis-catalog
/**
* Measure text content in Unicode code points; non-text blocks cost zero.
* @param blocks - tool-result content to measure.
* @returns total Unicode code points across text blocks.
*/
measureContent(blocks: readonly ContentBlock[]): number
/**
* Replace an over-budget text middle while retaining rich-block order.
* Text slicing is by Unicode code point, not UTF-16 code unit, so a retained
* boundary cannot split a surrogate pair. Grapheme clusters may still split.
* @param blocks - original tool-result content.
* @returns pruned content, or `null` when the text is within budget.
*/
pruneContent(blocks: readonly ContentBlock[]): ContentBlock[] | null
/**
* Prune every over-budget tool result from one stable current-surface snapshot.
* Each replacement preserves the complete event data except for `content`,
* and points at the shadowed node for durable provenance and replay.
* @param session - session whose current surface is rewritten.
* @returns landed replacements and aggregate Unicode-code-point savings.
* @throws when the session rejects a replacement; replacements committed
* earlier in the pass remain durable.
*/
pruneSession(session: Session): PruneResult
```
Types: [ContentBlock](../core-data-structures/core.md) · [PruneResult](../core-data-structures/compaction.md) · [Session](../core-data-structures/session.md)
Source: [`packages/compact/compact-tool-result-prune/src/index.ts:39`](../../packages/compact/compact-tool-result-prune/src/index.ts)
## `ctx.tools` — `ToolRegistry`
Tool registry and execution pipeline. Scoped registrations shadow globals; one visibility resolver feeds presentation, lookup, and dispatch.

34
docs/core-data-structures/compaction.md
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@@ -6,7 +6,7 @@ Source: [`packages/compact/compact/src/types.ts`](../../packages/compact/compact
## The `compact/*` session events
Compaction extends [`SessionEventMap`](session.md) with three event types via declaration merging. All three are **log-only** — they record the compaction lock and its provenance, and never join the surface. `SurfaceEventType` is deliberately NOT extended (only message-producing events reach the model), so the summary itself rides on a separate `user/message` with `surfaceOp: { op: 'replace', start, end }` — the only surface mutation. See the Agent Note for why reusing `user/message` is honest rather than a workaround.
Compaction extends [`SessionEventMap`](session.md) with three event types via declaration merging. All three are **log-only** — they record the compaction lock and its provenance, and never join the surface. `SurfaceEventType` is deliberately NOT extended (only message-producing events reach the model), so the summary itself rides on a separate `user/message` with `surfaceOp: { op: 'replace', start, end }` — the only surface mutation performed by summary compaction. See the Agent Note for why reusing `user/message` is honest rather than a workaround.
| Event | Payload | Role |
|---|---|---|
@@ -60,6 +60,36 @@ 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.
Pressure compaction runs at serial `agent/post-step`, after successful assistant output, tool results, buffered context, and steering are durable but before `step/end`. Once pressure or canonical overflow qualifies, compact-basic invokes optional [`ctx.toolResultPrune`](../../packages/compact/compact-tool-result-prune/README.md) before range selection, remeasures through `ctx.tokenMeter`, and can advance the surface without a summary. 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, even if later summary work throws after pruning; cancellation still wins. Region boundaries preserve tool-call/result pairing but not 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.
## Tool-result pruning outcomes
The optional tool-result pruning service reports each durable content replacement and the aggregate Unicode-code-point reduction. Its public result types live in [`compact-tool-result-prune/src/types.ts`](../../packages/compact/compact-tool-result-prune/src/types.ts).
```ts type-equiv
/** Provenance and size accounting for one landed surface replacement. */
interface PrunedEntry {
/** Full-fidelity tool-result event shadowed by the replacement. */
readonly originalSeq: number
/** Newly appended pruned tool-result event. */
readonly replacementSeq: number
/** Tool call shared by the original and replacement. */
readonly callId: CallId
/** Original text size in Unicode code points. */
readonly charsBefore: number
/** Replacement text size in Unicode code points. */
readonly charsAfter: number
}
```
```ts type-equiv
/** Aggregate outcome of one stable-surface pruning pass. */
interface PruneResult {
/** Replacements in the snapshotted surface order. */
readonly pruned: readonly PrunedEntry[]
/** Total Unicode code points removed across replacements. */
readonly charsRemoved: number
}
```

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docs/module-graph.md
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@@ -50,6 +50,7 @@ flowchart TD
subgraph group_compact["packages/compact"]
pkg_compact["compact"]
pkg_compact_basic["compact-basic"]
pkg_compact_tool_result_prune["compact-tool-result-prune"]
end
subgraph group_subagent["packages/subagent"]
pkg_subagent["subagent"]
@@ -180,6 +181,8 @@ flowchart TD
pkg_fs --> pkg_sandbox
pkg_compact --> pkg_llm
pkg_compact --> pkg_session
pkg_compact_tool_result_prune --> pkg_llm
pkg_compact_tool_result_prune --> pkg_session
pkg_web_fetch_local --> pkg_timeout
pkg_web_fetch_local --> pkg_web
pkg_web_search_deepseek --> pkg_web
@@ -204,6 +207,7 @@ flowchart TD
pkg_skill_local --> pkg_skill
pkg_compact_basic --> pkg_agent
pkg_compact_basic --> pkg_compact
pkg_compact_basic --> pkg_compact_tool_result_prune
pkg_compact_basic --> pkg_llm
pkg_compact_basic --> pkg_session
pkg_compact_basic --> pkg_token_meter
@@ -491,6 +495,7 @@ flowchart TD
| [`bash`](../packages/bash/bash) | `bash` | [`sandbox`](../packages/sandbox/sandbox) |
| [`fs`](../packages/fs/fs) | `fs` | [`brand`](../packages/util/brand), [`llm`](../packages/llm/llm), [`sandbox`](../packages/sandbox/sandbox) |
| [`compact`](../packages/compact/compact) | `compact` | [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
| [`compact-tool-result-prune`](../packages/compact/compact-tool-result-prune) | `compact` | [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
| [`web-fetch-local`](../packages/web/web-fetch-local) | `web` | [`timeout`](../packages/util/timeout), [`web`](../packages/web/web) |
| [`web-search-deepseek`](../packages/web/web-search-deepseek) | `web` | [`web`](../packages/web/web) |
| [`web-search-exa`](../packages/web/web-search-exa) | `web` | [`web`](../packages/web/web) |
@@ -504,7 +509,7 @@ flowchart TD
| [`fs-local`](../packages/fs/fs-local) | `fs` | [`fs`](../packages/fs/fs) |
| [`fs-policy`](../packages/fs/fs-policy) | `fs` | [`fs`](../packages/fs/fs) |
| [`skill-local`](../packages/skill/skill-local) | `skill` | [`fs`](../packages/fs/fs), [`home`](../packages/util/home), [`skill`](../packages/skill/skill) |
| [`compact-basic`](../packages/compact/compact-basic) | `compact` | [`agent`](../packages/core/agent), [`compact`](../packages/compact/compact), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`token-meter`](../packages/llm/token-meter) |
| [`compact-basic`](../packages/compact/compact-basic) | `compact` | [`agent`](../packages/core/agent), [`compact`](../packages/compact/compact), [`compact-tool-result-prune`](../packages/compact/compact-tool-result-prune), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`token-meter`](../packages/llm/token-meter) |
| [`spill-local`](../packages/spill/spill-local) | `spill` | [`spill`](../packages/spill/spill) |
| [`hook-protocol`](../packages/hooks/hook-protocol) | `hooks` | [`bash`](../packages/bash/bash), [`session`](../packages/core/session) |
| [`session-persistence-jsonl`](../packages/session-persistence/session-persistence-jsonl) | `session-persistence` | [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence) |