A rejected background spawn produces no process output, so the observed stderr reader the job registry pumps was empty and the model's job_output after such a failure showed only killed before exit, where master's consuming read rendered [stderr] followed by spawn failed: … with the cause. The local providers now serve the note as the whole observed stderr stream once the spawn rejected, and the consuming read still folds it in exactly once, so the model's first read after the failure is byte-identical to master's. ShellProcess.observed and both of its readers are required: every background process exposes offset readers, and the shell tools' pull sources no longer carry a no-readers branch.
tool-bash and tool-pwsh no longer render their own background reads.
processSources() wraps the process's observed offset readers as registry
pull sources, pumped at dsh-jobs-local's pumpPollMs, and processOutcome()
folds the settled sandbox facts into the terminal detail. observe.ts and
the recordPollMs config field are gone; READMEs and pairings follow.
- `JobStart` is a union discriminated by `record`: `RecordingJobStart.run`
receives `RecordingJob` (with `append`), `PlainJobStart.run` receives the
plain `RunningJob`, and the registry builds the plain face without the
method, so the former warn-and-drop path is unrepresentable.
- Remove the duplicated JSDoc opener in the registry seam and correct the
job-list slot comment (order 20 sits before the subagent catalog's 30).
- Restore the `cordis-tool-round` session fixture whose only change was a
re-recorded `createdAt`.
- Update the 2026-08-08 job-display note's stale service-disposal and slot
ordering facts; archive the superseded 2026-08-25 unified-task-list note
and point its remaining inbound links at the archived snapshot.
Review corrections on the observation record:
- `pumpJobOutput` subscribes to `done` once and keeps one pending timer;
racing the same pending promise every poll round retained a reaction
per round for the life of the job.
- The `ctx.jobOutput` effect disposer is async and awaits every open
carrier's `dispose()`, so the fiber reports unloaded only once the old
iterators are quiescent.
- `SessionJob.record: true` replaces `outputTotal`: `append` never commits
a roster change, so the mirrored count was stale while output flowed;
the live offsets ride the observation stream's `opened` anchor.
- The record is documented as a best-effort live preview whose
cross-stream reordering is bounded by the poll interval.
- The web e2e scenarios hold their background job on a test-owned barrier
file instead of a wall-clock sleep, and each is one test rather than a
chain sharing a job id.
Absorbs the repo-wide no-op invariant companion removal (ui-jobs loses its
placeholder companion, export, and devDep), the 0.1.2-alpha.3 release bump,
and the tool-subagent-report package retirement; regenerates the client slot
catalog for the shifted contract line numbers.
bash and pwsh background runs declare record: true and pump their observed
streams straight into the job through observeProcessRecord — the open/end
pairing, outcome mapping, and registry-absent degradation branches are gone,
and the pump's final drain folds into hooks.done so the record holds its
last bytes before settlement closes it. activityPollMs becomes recordPollMs.
tool-workflow drops its foreground activity mirror deliberately: a
foreground run's live phase/log narration had the mirror as its only
carrier, and the transcript keeps the recorded run/member lifecycle events.
Live narration returns with backgrounded runs when workflow gains
run_in_background.
Both ds-review-bot criticals verified and fixed:
- ClientActivityFeed release closures resolved the entries map at release
time, not the entry they were minted for. A late release of a superseded
observation decremented (and could tear down) the successor's stream, and
the post-dispose model clear could land after a re-observation inside the
dispose round-trip re-anchored the view — blanking the panel until the
popover reopened (React StrictMode's double effect hits the same window).
Releasers now capture their entry, reconcile the map only when it still
holds that entry, and skip the view clear whenever a successor owns the
key. Both regressions fail on the previous code.
- The background observation tap mapped the process outcome as soon as the
pump settled — including its failure path, where the process is usually
still running: processOutcome requires a settled handle, so an early
mapping froze 'exit code: 0' onto a live task and first-wins end discarded
the real terminal state. The tap now awaits proc.done before mapping (the
promise never rejects) and swallows mapping failures per the module's
contract, in bash and its pwsh mirror.
Also applied from the same review: the Remote tier's cross-session
visibility is now stated in the controller README, ActivityRead.next
documents its chunk-boundary nature that client concatenation relies on,
mergeRows records the one-activity-per-job assumption, and the 08-24 Agent
Note now reflects the shipped unified task list.
Add the activity capability seam: ctx.activities is a pure observation
plane where long-running work (background bash/pwsh, workflow runs) opens a
handle, appends transient output into a byte-offset ring buffer, and settles
exactly once. Nothing model-visible changes: reads are non-consuming and
lossy-by-design (absolute UTF-8 offsets survive eviction and report gaps),
correlation carries {callId, jobId}, and visibility is owner-fenced like jobs.
The seam is strictly optional. Producers tap it through ctx.get('activities')
and contain every observation failure, so an unregistered or broken registry
never affects the underlying job (proven by broken-registry tests).
Ship the full path in one change:
- @deepseek-ai/dsh-activity: Service Definition, pumpActivityOutput pull
substrate, invariant companion; dsh-activity-local: ring-buffer provider
with retention config and owner cleanup.
- shell: ShellProcess.observed exposes non-consuming stdout/stderr readers;
tool-bash/tool-pwsh mirror background jobs into activities.
- tool-workflow: phase/log/agent lines mirrored as a workflow activity.
- api-activity-controller: Typert Remote control (roster baseline+buckets)
and observe (opened/output/status frames, coalesced and byte-capped)
streams plus the client feed service with reference-counted observation.
- ui-activity: session-header action rendering live output through
TerminalBlock, which now shows output while a command is still running.
Docs: activity subsystem page, architecture row, regenerated catalogs, and
the Agent Note (2026-08-24-activity-observation-seam), all bilingual. A
keyless web e2e replays a real run_in_background stream to ARIA goldens.
Yichen Jiang