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https://github.com/deepseek-ai/deepseek-harness
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Adapt workspace context to session prefixes
This commit is contained in:
Yichen Jiang
@@ -246,6 +246,15 @@ The fifteen event variants (`turn/start`, `turn/end`, `step/start`, `step/end`,
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Source: [`packages/core/agent/src/types.ts`](../../packages/core/agent/src/types.ts)
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`InjectOptions` extends ordinary message attribution with context-only framing and durable model-hidden JSON metadata:
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```ts type-equiv
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interface InjectOptions extends SendOptions {
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envelope?: ContextEnvelope
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meta?: JsonValue
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}
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```
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```ts type-equiv
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interface Agent {
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readonly id: AgentId
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@@ -265,8 +274,10 @@ interface Agent {
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/**
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* Inject in-session context (file-change notices, skill content, cron
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* notifications, …): appends a `context/message` session event the next model
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* request sees at its chronological position, rendered as tagged synthetic
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* context rather than a user prompt. Does not run the model.
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* request sees at its chronological position, rendered as synthetic context
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* rather than a user prompt. The default uses the canonical context tag;
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* `options.envelope: 'raw'` preserves caller-owned framing. Does not run the
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* model.
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*
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* Turn-enclosure (the turn-enclosure RFC): an inject while a turn is open joins that turn;
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* an inject while idle wraps its `context/message` in a one-shot `injection`
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@@ -276,11 +287,11 @@ interface Agent {
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* (inject is synchronous): a failing flush is reported via `agent/error`
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* (step `0`) and the logger, never thrown into the caller.
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*
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* Live-adapter review has validated the tagged-envelope rendering against
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* current DeepSeek behavior; provider-specific mismatches belong in that
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* adapter, not in the canonical session vocabulary.
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* Live-adapter review has validated the canonical tagged-envelope rendering
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* against current DeepSeek behavior; provider-specific mismatches belong in
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* that adapter, not in the canonical session vocabulary.
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*/
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inject(content: ContentBlock[], options?: SendOptions): void
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inject(content: ContentBlock[], options?: InjectOptions): void
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/**
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* Cancel ALL pending work for the agent. `cancel()`:
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@@ -330,11 +341,11 @@ interface Agent {
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}
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```
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`AgentStatus` is `'idle' | 'running' | 'disposed'`. `AgentId` is a branded string. `AgentOptions` (`model?`) is merge-extensible — plugins add creation options by declaration merging; the persona is NOT an agent option but the `dsh-system-prompt` plugin's `persona` config, shared context-wide. The `agent/*` event taxonomy (lifecycle emits incl. `agent/session-start`, the serial `agent/pre-step` surface-mutation seam, and the `agent/prompt-submit`/`agent/request`/`agent/session-prefix`/`agent/step-result`/`agent/turn-continuation` waterfalls) is in [architecture.md § Event taxonomy](../architecture.md#event-taxonomy); turn/step boundaries are durable `session/event` records, not `agent/*` emits.
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`AgentStatus` is `'idle' | 'running' | 'disposed'`. `AgentId` is a branded string. `AgentOptions` (`model?`) is merge-extensible — plugins add creation options by declaration merging; the persona is NOT an agent option but the `dsh-system-prompt` plugin's `persona` config, shared context-wide. The generated [events catalog](../cordis-catalog/events.md) owns the exact `agent/*` vocabulary; turn/step boundaries are durable `session/event` records, not `agent/*` emits.
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## Interception decisions
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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. They share one envelope for model-facing context, `HookContext`, which is `inject()`ed as a `context/message` and so carries a REQUIRED `source` (a missing source would default to `{kind:'user'}` and mislabel plugin context as a user prompt).
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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. They 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.
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Source: [`packages/core/agent/src/types.ts`](../../packages/core/agent/src/types.ts)
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@@ -342,6 +353,8 @@ Source: [`packages/core/agent/src/types.ts`](../../packages/core/agent/src/types
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interface HookContext {
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content: ContentBlock[]
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source: MessageSource
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envelope?: ContextEnvelope
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meta?: JsonValue
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}
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```
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@@ -4,6 +4,14 @@ The in-memory, event-sourced model of [dsh-session](../../packages/core/session)
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Source: [`packages/core/session/src/types.ts`](../../packages/core/session/src/types.ts)
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## Context framing
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`ContextEnvelope` selects the standard tagged projection or preserves a producer-owned complete frame. The latter changes framing only; the event remains a user-role `context/message` in chronological history.
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```ts type-equiv
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type ContextEnvelope = 'context' | 'raw'
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```
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## `SessionEventMap` — the event vocabulary
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The append-only event types. Merge-extensible: a plugin declares extra event types via declaration merging — e.g. the [compaction seam](compaction.md) adds `compact/start` / `compact/summary` / `compact/end`, and `@deepseek-ai/dsh-hook-protocol` adds log-only `hook/invoked` / `hook/result` provenance for a hook bridge. Like `compact/*`, these are NOT `SurfaceEventType`s (no `surfaceOp`). The generated [persistence log event catalog](../persistence-catalog.md) enumerates every member — core and merged — with its payload, surface badge, and declaration site.
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@@ -30,9 +38,16 @@ interface SessionEventMap {
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/**
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* In-session context injection (file-change notices, subdir AGENTS.md,
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* skill content, cron notifications, …). Rendered into the derived history
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* as tagged synthetic context — NOT a user prompt.
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* as synthetic context — NOT a user prompt. `envelope: 'raw'` lets a caller
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* supply its own complete framing; `meta` is persisted JSON hidden from the
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* model.
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*/
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'context/message': { content: ContentBlock[]; source: MessageSource }
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'context/message': {
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content: ContentBlock[]
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source: MessageSource
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envelope?: ContextEnvelope
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meta?: JsonValue
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}
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/** Raw stream chunk — token-level replay fidelity. */
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'assistant/chunk': { turn: number; step: number; chunk: StreamChunk }
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/**
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@@ -203,7 +218,8 @@ export interface SurfaceNode {
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- `user/message` → a user message.
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- `assistant/message` → an assistant message. Raw `assistant/chunk` events are replay/UI data and are **skipped** in derivation (the assembled message is authoritative). An **empty-content** `assistant/message` is also skipped — a max-tokens step cut off with no content still records an `assistant/message` to host its `usage`, but a content-less assistant turn must not enter the provider transcript.
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- `tool/result` → a user message carrying a `tool-result` block.
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- `context/message`, `steering/message` → user-role messages wrapped in a tagged envelope (`<context source="…">…</context>`) at their chronological position — the "system-reminder" pattern; the model distinguishes them from real prompts by the envelope.
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- `context/message` → a user-role message at its chronological position. The default `envelope` is `context`, which wraps content as `<context source="…">…</context>`; `envelope: 'raw'` uses caller-owned framing verbatim. Optional JSON `meta` remains in the event log and is never rendered.
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- `steering/message` → a user-role message wrapped in `<steering source="…">…</steering>` at its chronological position.
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Everything else (`turn/*`, `step/*`) is structural and does not project into a message. Token usage is observed on `assistant/message.usage` (the step that produced it); an operational error's step number is on `turn/end.reason` for `kind: 'error'`.
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