Add @deepseek-ai/dsh-agent-model. It provides ctx.agentModel
(resolveForNextStep, select, applyConfiguredRoute) and owns the
modelSelection projection, which the Agent registry no longer registers.
dsh-agent-loop now injects agentModel; the base and SDK-minimal bundles
and the Python SDK runtime include it.
The provider keeps the projection registered until consumers that are
still unloading finish their cleanup. The model-switch notice becomes an
opt-in per-Agent plugin at @deepseek-ai/dsh-agent-model/notice, and
agent/request now also rejects reasoning-effort changes after step
preparation.
Mount the provider in every composition that loads dsh-agent-loop, and
update consumers, the switch-notice snapshot driver, docs, and the
upgrade guide.
Delete @deepseek-ai/dsh-invariants, every package's ./invariant companion
and its tests, the invariant gates and Vitest setup, the scoped-event
resolver generator, and the INVARIANT-coded listener rethrow paths.
Update docs, READMEs, Agent Notes, and add an upgrade guide.
Session format v4 refuses the retired `{ kind: 'plugin', plugin: '<name>' }`
wrapper at message admission, and the v3-to-v4 migration maps released plugin
names to producer-owned kinds. Five paired documents still show the wrapper as
the current shape, so a plugin author copying them writes a source the session
refuses.
The examples now name the kind the producer declares through
`MessageSourceMap`, and the tool cookbook states that declaration requirement;
the wrapper appears only as the form the admission check rejects. The two
package READMEs also disagreed with their own sources: time-context writes
`{ kind: 'time-context', form: 'snapshot', sections }`, and
repeat-tool-reminder writes `{ kind: 'repeat-tool-reminder' }` with no `form`
or `summary`.
* feat(workspace): stop a Session's running work before archiving it
Archiving was a pure visibility write, so a Session archived mid-turn kept
running out of sight. The Workspace registry now owns archive admission
through two Host events: `workspace/session-activity` reports what still
runs and refuses the plain archive as `workspace/session-active`;
`workspace/session-stop`, requested with `stopActivity`, stops that work the
way the user's own stop actions do before the archive write. The API Session
Controller reports and stops turns, subagent descendants, and owned jobs and
rejects any model step for an archived Session; the Schedule plugin reports
and deletes active reminders. The sidebar turns the refusal into a
stop-and-archive confirmation listing the Host's answer.
* test(workspace): pin the widened archive signature and prove child liveness by heartbeat
The Client inspect catalog spec pins archiveSession's new options
parameter, and the archive e2e reads the Bash child's liveness from a
heartbeat file instead of a pid: the Linux sandbox runs the tool in its own
PID namespace, so the pid it reports is not comparable from the test.
* test(workspace): cover the archive-admission providers and dialog to the per-file gate
Drop the provider's unused disposer and the dialog's unreachable confirm
guard, read reminders without a catch that no composition can reach, and
add the cases the coverage lane found missing: a stop without a jobs
registry, a looping lineage, a descendant whose projections reject, the
dialog's Escape guard and non-Error reason, and a family merged by another
provider.
* fix(workspace): write the archive before stopping, gate subagent lineage, and delete reminders under the schedule barriers
Review round on #4765. The registry now writes the archive set before it
dispatches `workspace/session-stop`, so the durable set already gates
every wake the stops induce; the controller's `agent/pre-step` gate also
blocks subagent descendants of an archived Session and contains each
cancel or kill on its own. The Schedule plugin's stop listener runs as a
management delete in the agent's transaction queue between the same two
persistence barriers the `schedule_delete` tool uses. The confirm dialog
selects singular or plural English lines and keys list rows by index.
Docs: archive-admission section with type-equiv blocks on the workspace
subsystem page, write-first order and residual windows in the READMEs
and the Agent Note, and the missing zh reminders sentence.
* test(web): scope the question composer's New Session wait to the Sessions tree
The wide sidebar's New Session button carries the same visible label as
a fresh session row, so the unscoped `getByText` either settled on the
button before the row existed or hit a strict-mode violation once the
row rendered first, which is how the snapshots lane failed on
ece68c2ab5. Waiting inside the Sessions tree names the row alone.
* fix(schedule): answer archive admission from the owned runtime's fold, not the projection registry
The `sessionProjections.snapshot` API is the Client projection view and
is not a Host read path (review on #4765). `ScheduleRuntime.activeRecords()`
folds the live log the way every drive does, and the archive-admission
listeners ask the owned runtime for that fold: a session without a live
agent or without an owned runtime has nothing armed to fire, so it reports
nothing and has nothing to stop. Covers the runtime-less agent, a fold that
turns unreadable at the persistence barrier, and the stopping/faulted
runtime answering nothing.
* refactor(subagent): report and stop subagent descendants from the Subagent runtime
The `subagent` family of archive admission moves out of the API Session
Controller into `dsh-subagent`, which records the lineage at delegation
and owns the descriptor (review on #4765): `SubagentRuntime` answers
`workspace/session-activity` with the running descendants, labelled from
each child's descriptor through a live Session observation, and
`workspace/session-stop` by cancelling each of them with the parent
cause. The controller keeps turns, owned jobs, and the lineage step gate,
and composes its provider through `ctx.plugin(SessionActivityProvider)`
with declared injections instead of a bare installer call. `dsh-workspace`
becomes an optional type-only peer of `dsh-subagent`.
* refactor(jobs): answer archive admission for owned jobs from the job registry seam
The `job` family moves out of the API Session Controller into `dsh-jobs`
(review on #4765): the seam's constructor installs the
`workspace/session-activity` and `workspace/session-stop` listeners for
every implementation through the abstract `list` and `kill` alone, so the
controller no longer knows the jobs vocabulary and keeps only the turn
family and the archived-lineage step gate. `dsh-workspace` becomes an
optional type-only peer of `dsh-jobs`.
* refactor(workspace): leave SessionActivityKindMap empty and let each provider merge its family
The workspace package no longer names any activity family (review on
#4765): `SessionActivityKindMap` is empty, and each provider merges its own
key from a module both its faces import — `turn` in the API Session
Controller's types, `job` in the job registry seam's view, `subagent` in
the Subagent runtime's control types, `schedule` in the Schedule plugin's
types. The confirm dialog imports those modules for its cases and keeps
the generic line for any other key; the registry and controller suites
merge test-owned families instead of borrowing the providers'.
* refactor(agent): report and stop the running turn from the Agent registry
The `turn` family moves out of the API Session Controller into `dsh-agent`
(review on #4765): the registry's constructor installs the
`workspace/session-activity` and `workspace/session-stop` listeners for
every Agent it publishes, answering with its own lookup and cancelling the
turn with the user cause, and merges the `turn` key from its client-safe
types. The controller keeps only the archived-lineage step gate, renamed
`ArchivedSessionGate`. `dsh-workspace` becomes an optional type-only peer
of `dsh-agent`; the workspace package depends on none of the providers,
so the edge stays acyclic.
Since #3127 a foreground Bash command is a registered job from its start,
so the archive dialog lists it beside the turn; the e2e and its ARIA golden
expect that row, and the capture keeps the running job by design.
Preserve prepared-route admission and V3 prompt semantics while adopting latest master. Regenerate the new model-switch recording at its actual upper-layer title ordering, retain the V2 predecessor, and keep queued-image and publint lifetime assertions strict.
Resolve agent/request and prepareCall inside the accepted open step before committing system and user input. Preserve prompt-assembly model selection, bind capability and dispatch to the same prepared adapter, then log the envelope and derive the request synchronously. Preparation cancellation leaves a balanced empty step with no admitted input.
Normalize incapable-route retained prompt versions with logged per-node empty replacements and a current head, including unchanged rendering and resumed history. Dormant empty tails do not override the effective prompt. No new event or delete operation.
Tests: 389 agent-loop cases pass with exact agent.ts/runtime-context.ts coverage at 100% for all metrics; tsc -b packages/core/agent-loop/tsconfig.json passes. Seven actual-loop MockAdapter cases exercise pi-ai conversion, source-event reconstruction, both route transitions, resume, cancellation barriers, and bound selection. Stale-capability negative control fails all three transition regressions. Update EN/ZH request visibility, lifecycle generator, and owning rationale. Broad catalogs, recorded SDK/GUI and aggregate gates remain parent-owned.
The `start` frame and the reconnect baseline attempt carried a wall-clock
`startedTime` that no Host or Client consumer read: the Host accumulator
and the Client reconciler copied it into their attempt maps and nothing
looked at it again. Presentation frames now carry only the coordinates
consumers use (attempt, revision, turn, step, chunk index, and v1 seq
provenance); the type-equivalence block, event graph, READMEs, and the
live-stream Agent Note follow the type.
Render reconstructable system prompts at each request-series boundary, preserve series declarations through pre-step wrappers, and keep the presentation and replay snapshots aligned across clients.
_Kerman