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https://github.com/deepseek-ai/deepseek-harness
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15d452d7ea
Review found the `onTasksChanged` teardown reasoning inverted. The comment claimed every registration is an effect on the registry's own fiber, so listeners would be gone before service disposal empties the store — but the traceable proxy rebinds `this.ctx` to the CALLER, which this package's own HMR-safety test already proves. The only shipped consumer registers from the api-proxy mux stream, so it was still listening and simply kept the rows it last received. Service disposal now announces the emptied set, and teardown announces its stopping transition immediately instead of leaving an observer on `running` for however long a slow producer takes to release. Two documentation claims were false in the opposite direction: the Agent Note and the ui-task README both said an unowned task is invisible in the header, while `list(caller)` returns unowned tasks to every caller, the carrier fans their changes out to every subscribed session, and this PR's own test asserts exactly that. The note even contradicted itself two sections earlier. Both sides now state the real asymmetries — another session's tasks, and the process-local registry emptying on restart. The "no Web path calls the consuming `ctx.tasks.read()`" invariant claimed a test that did not exist; the carrier suite's producer had no `readOutput` at all, so a stray read would have failed nothing. Its producer now counts cursor consumption and the lifecycle and baseline paths both assert zero. Also: a session created after the mux opened now receives the task baseline it missed, the popover samples its clock when it opens rather than at mount, and a failed task's unbounded producer detail elides instead of widening the row.
Subsystems
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One page per subsystem of the DeepSeek Harness: what it is, the data structures it moves, and — where a ctx service or event scope backs it — a generated Cordis surface section carrying its service and event reference. The folder complements architecture.md, which describes behavior across subsystems (the service map, the session/turn/step lifecycle, the event taxonomy); each page here is the reference for one subsystem's vocabulary and wiring.
| Page | Owns |
|---|---|
| core.md | the packages/core control spine: the package-by-package loop map, agent creation and ownership (AgentHandle), the Agent handle with its delivery/cancellation/interception contracts, and the repo-wide type patterns (…Map → derived-union, branded ids) |
| llm-streaming.md | the packages/llm conversation vocabulary — Message/ContentBlock, the assembled model request, the StreamChunk wire protocol + adapter contract, BlockAssembler, the LlmAdapter provider contract |
| token-meter.md | immutable scalar and positional replay measurements with consumed-log revisions |
| scope.md | scoped registration identity, dispatch carriers, and the owned Scope context |
| typert.md | Remote invocation descriptors, lookup/Context declarations, TypeRT registries, and the Host Gateway/Client API boundaries |
| goal.md | persisted goal identity, lifecycle snapshots, activation, change records, and round attribution |
| commands.md | the human-command registry service: definitions, adapter discovery, direct invocation, results, and parsing views |
| session.md | the full SessionEventMap variant catalog, TurnTrigger/TurnEndReason, deriveMessages(), execution enclosure, and standalone events |
| persistence.md | the durability seam: SessionPersistence, JSONL + SQLite backends, session/flush, crash recovery, SessionHeader |
| settings.md | the user-settings seam: SettingsNamespace registration, layered resolution (defaults → composition base → user document), owner scopes, hot commits |
| credentials.md | the credential seam: CredentialRef references (never values) in configuration, per-operation resolution, UI-safe CredentialInfo, provider source layers |
| session-query.md | logical records, bounded exact-event reads, relationship traces, semantic filters/documents, and full-text result pages |
| session-title.md | durable title snapshots, cited source-message seqs, and the asynchronous provider contract |
| session-reference.md | structured cross-session references: SessionReferenceInput/Candidate, prepared message contexts, the stable error taxonomy |
| system-prompt.md | per-assembly context, tool-provider results, prompt sections, and cooperative assembly |
| tools.md | ToolDefinition full fields, the schema DSL, ToolExecution/ToolResult, tool-presentation UI types, and the guarded execution pipeline |
| user-interaction.md | the UI-backed human question/answer seam: AskUserQuestionRequest, answer/options vocabulary, provider API, error taxonomy |
| approval.md | the one-shot user-approval seam: ApprovalRequest, ApprovalOutcome, per-session policy, audit and answerer contracts |
| bash.md | the bash executor seam: BashExecRequest/Spec, BashRunResult, background BashProcess handles |
| subprocess.md | the subprocess seam: fully-explicit SubprocessSpawnSpec, offset-based output readers, unclassified SubprocessOutcome, and the managed DSH_* environment vocabulary |
| pty.md | persistent terminal ids, backend/session contracts, send readiness, bounded reads, and owner-visible snapshots |
| sandbox.md | per-session policy resolution and the process-confinement seam: file-effect modes, execution/provider policies, ConfinedArgv, enforcement and fail-closed errors |
| code-runtime.md | the code-execution seam: CodeRunRequest/Result, binding namespaces, captured logs, the CodeRunFailure taxonomy |
| filesystem.md | the filesystem seam: FsTarget, read/write/edit outcomes, observed-file state, FsErrorCode |
| lsp.md | the LSP navigation seam: LspQueryRequest/Result, LspProvider/Service, four operations, LspError |
| skills.md | the skill service: discovery priority, SkillSummary/SkillDefinition, session-prefix catalog, model-facing skill loading |
| compaction.md | the compaction seam: the compact/* session events, CompactionResult, the CompactService interface |
| subagent.md | the subagent seam: the named-provider registry, SubagentStartRequest/Result/Run, the start-time-vs-runtime capability split |
| web.md | the web access seam: WebSearchRequest/Result, WebFetchRequest/Result, WebFetchBody, provider availability, WebError |
| spill.md | the spill storage seam: SaveTextSpill, SpillOwner/SpillSource, SpillRef, the branded SpillLocator |
| workflow.md | the workflow seam: WorkflowStartRequest, WorkflowMeta, WorkflowRun/Result, the workflow/* event payloads, WorkflowError fatality |
| tasks.md | the background-task runtime: branded TaskIds, the producer contract, consumer views, ctx.tasks service behavior |
| permission.md | the permission-preset layer: PresetSpec/PresetOption, the derived custom state, the log-only permission/preset event |
| plan.md | plan mode: the log-only plan/mode state, pending-selection flush, PlanModeConfig, the exit_plan_mode review arc |
| invariants.md | the runtime-invariant registry: selection Config, InvariantInstaller/InvariantFailure, the empty-companion contract |
| http-server.md | the HTTP carrier: WebRouteKind/WebRoute, match order, the claimable fallback seat, index taps |
| storage.md | the storage subsystem: the backend contract (StorageBackend), StorageForms, DomainSpec/Domain, domain/changed |
| workspace.md | the workspace registry: Workspace/WorkspaceId, registration and resolution, the session cwd relationship |
| client-modules.md | the web plugin table: dshClient declarations, WebBootGraph wire composition, the bundle route and index tap |
| session-projection.md | the projection seam: SessionProjectionMap, the pure ProjectionDefinition unit, ProjectionSnapshot's consistent cut, the change feed |
| telemetry.md | the session-telemetry capability seam: TelemetryRecord/TelemetrySeverity, the TelemetryBackend contract, the telemetry/record redact waterfall |
Type declarations and their JSDoc on these pages are source-equivalent and drift-checked by
pnpm run verify-type-equiv(see development.md). Ordinary blocks preserve complete declarations;public-apiblocks preserve body-stripped public class declarations. Cordis services and events use each page's generated Cordis surface section.