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deepseek-harness/website/zh-CN/api/harness/session-persistence.md
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lintianle 2cde2a9032 Merge origin/master into feat/website-docs
Conflict resolution notes:
- package.json/run-gates: both sides' new doc-sync gates kept (master's
  scoped-events/readme gates + this branch's website-api/website-yaml);
  js-yaml devDeps deduped (master added them independently).
- pnpm-workspace/knip: website AND python/sdk-runtime entries kept.
- doc-typecheck/verify-type-equiv: master's condensed headers kept, website
  glob retained in both scan scopes.
- vendor/cordis/src/fiber.ts: master's lifecycle-hardening code taken; this
  branch's richer FiberState JSDoc reapplied on top. vendor/README.md logs
  both local modifications (hardening = 6, JSDoc enrichment = 7).
- pnpm-lock: regenerated from master's side (pnpm install).

Post-merge sync the gates forced (the system working as designed):
- verify-website-yaml caught 4 stale plugin names from master's package
  reorg (dsh-stdio-agent -> dsh-stdio-demo, dsh-acp-agent -> dsh-acp-demo);
  8 references fixed across guide/ and develop/.
- gen-website-api picked up master's 6 new services automatically
  (ctx.approval/permission/sandbox/sessionQuery/skills/tasks -> 6 new pages
  + sidebar); api/index.md hub updated to list them.
- AGENTS.md budget ceiling 1370 -> 1400: the website rows (layout line + two
  command lines) and master's own growth collided with the old ceiling; all
  three website rows are load-bearing (new top-level dir, new CI command).
2026-07-16 21:36:43 +08:00

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Markdown

<!-- Generated by scripts/gen-website-api.ts — do not edit by hand. Run `pnpm run gen-website-api` to regenerate. -->
# ctx.sessionPersistence
`SessionPersistence` (abstract seam) — provided by `@deepseek-ai/dsh-session-persistence`.
Durable append-only session storage. Implementations preserve contiguous, losslessly JSON-serializable events; append resolves only after durability, and load balances a complete interrupted tail without rewriting committed events.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/session-persistence/session-persistence/src/index.ts#L30)
### ctx.sessionPersistence.create(meta)
```ts website-api
abstract create(meta: SessionHeader): Promise<void>
```
Register a new session's metadata. A backend MAY defer the physical write until the first append (lazy materialization), in which case a created-but-never-appended session is absent from list — abandoned sessions leave nothing behind.
- `meta` — the immutable header (id, version, cwd, lineage) to record.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/session-persistence/session-persistence/src/index.ts#L42)
### ctx.sessionPersistence.append(id, events)
```ts website-api
abstract append(id: SessionId, events: readonly SessionEvent[]): Promise<void>
```
Durably persist a batch of events (called from the write-behind drain at the `session/flush` checkpoint). Honors the append-only and contiguous-seq contracts: the first event's `seq` MUST equal the stored next-seq (after `load` has durably closed any interrupted turn). Rejects non-JSON- serializable `event.data` with an error naming the offending event type.
- `id` — the session the batch belongs to.
- `events` — the contiguous batch to persist, in seq order.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/session-persistence/session-persistence/src/index.ts#L53)
### ctx.sessionPersistence.load(id)
```ts website-api
abstract load(id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }>
```
Load a header and balanced contiguous log. A complete interrupted final turn is preserved and durably closed with missing tool errors plus any open step and turn boundaries; only a torn final record is discarded. Unknown versions and corruption in the committed prefix reject.
- `id` — the persisted session to reload.
**Returns** the header and a log ending on a balanced `turn/end`.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/session-persistence/session-persistence/src/index.ts#L63)
### ctx.sessionPersistence.list()
```ts website-api
abstract list(): Promise<SessionHeader[]>
```
Lightweight listing from metadata, without a full-log parse.
**Returns** one header per materialized session.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/session-persistence/session-persistence/src/index.ts#L69)