Files
orca/src
Brennan Benson c71601f51c Add Pi structured native chat through its RPC mode (#25851)
* End a running call as its turn's journal row ends

A call still running when its turn ends takes the state of that turn's
row: a row another writer settled first (a person's Stop) stands, so its
calls read interrupted whatever the provider's later end reports. The
no-ending path that settled calls from the Stop row is gone, since a Stop
now leaves running calls to the provider. Adds the two Spanish strings.

* Say why a Grok turn failed, and keep task rows in Grok's own words

A failed Grok turn ended with no reason on screen: the translator dropped
every copy of Grok's message. The failed turn now gets one status row in
Orca's existing "provider did not accept this message" words with Grok's
reason, read from whichever copy arrives first (the given-up retry, the
turn's end, the prompt's completion notice, or the prompt's error answer);
later copies only fill a reason the row still lacks.

A running background command no longer reads "Background task <id>
started": a task's summary is mapped only once it has settled. A monitor
stays a monitor when the agent reads its output: a frame that names no
kind keeps the known one, and a "[monitor" command is a monitor.

A prompt's turn is marked started, so a late frame for an ended prompt
neither reopens it nor becomes the active turn. A tool's turn is held in
one place at a time.

* Read a monitor from Grok's exact output prefix

* Word a failed Grok turn in Grok's own text, not as a refused message

A turn that started and then failed was told "The provider did not accept
this message", Orca's sentence for a message refused before its turn. The
row now reads as a Codex turn-ending error does: an error status row with the
provider's own words. With no words, the dialect names the failure ("Grok
ended this turn with an error." / "Grok usage limit reached."), else the
agent's display name does.

* Settle a stopped turn's running call as its turn row ended after a restart too

The restart sweep ended every running call by the death evidence alone, so after
a person's Stop with no proof the child died the call read failed under a turn
that read interrupted. The sweep and the live dead-generation settlement now ask
the same rule the assembler does: a call in a turn already settled ends as that
row ended; only a turn still running leaves its calls to the evidence.

* Keep the dead-generation settlement under the line cap

* Register the ACP schema verify step in the PR preflight phase test

* refactor(agent-session): one required agent registry; declarations admit what they claim

A StructuredAgentRegistry, built once from the {definition, adapter}
registrations, is now a required host dependency and the router routes with
it. The adapter interface loses its optional router-only capabilities?() and
definition?(); every reader (options at rest, thread goal, rewind, the
/compact handover) asks the registry. A live session still narrows rewind
through the adapter, and the host combines declared and narrowed in one
helper. The registry refuses a registration that declares compact, a thread
goal or rewind without the adapter method behind it.

/compact is admitted by the declared capability, so an agent that declares
compact:false gets the commandRefused fact instead of a thrown error.

Also: the cut-turn notice names the agent from the catalog, create-support
builds the account home through agentSessionAccountHome, and the turn
status text older clients read names the session's agent instead of
defaulting to Codex (Claude/Codex text unchanged).

* Read ACP permissions, session events and prompt errors through the protocol client's own types

The translator now reads a permission request with the client's lenient reader, a session update
with its session-event reader, and takes only the agent's own error answer as a failed prompt's
reason, so an Orca-side error never reads as the provider's words. Tests cover protocol values
newer than this build.

* refactor(agent-session): the router applies the declared rewind itself

The router holds the registry, so its rewindSupport answers the owner's
declared rewind narrowed by the adapter, in one place no reader can bypass.
The host-side combining helper is gone; readers ask the adapter they hold.

* test(agent-session): register the agents the merged-in tests now need

The adoption replay test builds its host over this build's registered agents
instead of an adapter definition method, and the stored-form test passes the
stored agents the record guard now requires.

* chore(agent-session): the registry is the one lookup; drop the test-only empty capability record

* fix(agent-session): keep "dismiss all" restart offers dismissed for the desktop

The desktop renderer calls the restart methods as a paired runtime client
without the registered-agents capability, so it was handed a Claude/Codex
audience and its "dismiss all" took the scoped path: no dismissal fence and
no clearing of unwritten teardown witnesses, so a late teardown write could
bring a dismissed offer back.

The audience is now derived against this host's registry: a client that can
show every agent the host registered gets none, and dismisses exactly as
before (one fence for every offer). A client that truly cannot show some
agent still gets a final dismissal for what it sees: each cleared session is
fenced on its own (bounded, superseded by a dismiss-all fence) and only the
witnesses of agents it sees are dropped.

One predicate now answers which agents a client renders, for both tab
projection and restart offers; the Claude capability rule is folded in.

* fix(agent-session): a changed agent definition never hides that agent's chats

A record was readable only if every handle used the transport its agent's
definition declares today, and its account variable was declared by some
registered agent. A later build that drives the same agent over another
protocol, or under a renamed variable, would have set every existing chat of
that agent aside: no tab, no history, no error.

Readability now asks only that the record agree with itself: its agent is
registered, every handle shares one namespace owned by that agent, and the
account variable is a well-formed name. Whether this build can drive it (the
chain's transport is the one the agent speaks, and the account variable is
that agent's own, since it becomes the child's environment) is decided in
performAttach, the one admission every start of every agent passes through,
and refused there as hostUnsupported. A record pinning another agent's
variable is refused the same way rather than passing because some agent
declares it.

* refactor(agent-session): each agent's registration says where it runs and which account it pins

createSupport, create and the model catalog's account read still chose a
location rule and an account resolver by name (Claude, Codex, else none),
so a new agent would have needed a third branch beside the registration
list that already decides storage, routing and publication.

Each runtime registration now carries supportsLocation(location) and
resolveAccountHomePath({ launchEnv, location, purpose, workspacePath }),
and Claude's and Codex's rules move into their entries unchanged: a read
still syncs no home and starts no bridge, a Codex launch still trusts the
workspace first, and WSL locations resolve as before. The list exists
before the host is built, so none of these reads installs the host, and an
agent the list does not hold is answered no without opening the journal.

* test(agent-session): drop a duplicate registry key; keep fences out of the capsule state

A spread input already carries the registry, so the explicit key was
overwritten (TS2783). The session-fence helper now returns only the fence,
not the capsule state it was given.

* fix(agent-session): a scoped dismiss-all persists no per-session fence

The per-session dismissal fence added a forever-persisted capsule field
with an arbitrary cap that served no caller: only the local desktop calls
the restart methods, and on a host whose agents it all shows it gets no
audience and takes the unscoped, fenced dismissal. A scoped dismiss-all
(a caller that cannot show some registered agent) keeps that agent's
offers, clears only its audience's unwritten witnesses, and writes no
fence; a late write from this process is serialized behind it. The field
never left this unreleased branch.

* fix(agent-session): refuse an attach whose agent is not the session's own

The start check judges the record's agent while the router starts the adapter of params.agent, and the attach wire let the two differ. Admission now refuses agent !== provider as requestMalformed, so the agent checked is the agent started. Every host-built attach already sets them equal.

* fix(agent-session): offer to start a chat only when the start would accept it

The restart offer, a failure's retryable flag and the pre-send check asked only whether the adapter runs the chat's location, while the start also refuses a record this build cannot drive; such a chat was offered Resume and its Retry failed forever. One host predicate, hostCanStartRecord (location support and agentDrivesSession), now answers all four; adapterSupportsRecord stays the reader gate, and an undrivable chat's offer is kept, not retired.

* fix(agent-session): the model-catalog probe uses a record's account only if this build drives it

A record-scoped catalog read started the agent's lister under the record's account path whatever variable the record pinned. It now uses that path only when agentDrivesSession holds, and otherwise resolves the account as for a read with no record.

* refactor(agent-session): the record store admits agent ids; comments say where transport is checked

The store only ever asked whether an agent is registered, so its admission list is now the registered ids; the definition is the one home of an agent's transport and account variable. Comments that said the record store checks transport, and one that cited a nonexistent function, now point at agentDrivesSession and the attach admission. The isPersistedAgentSessionRecord(value, agents) call shape and the test fixture the cross-version probe imports are kept.

* docs(agent-session): the record store admits the registered agents' ids

* refactor(native-chat): Grok's registration declares where it runs; ACP no longer borrows Codex's location rule

The rule a self-supervised agent child runs under (this machine, no WSL, Windows only with process
start-time proof) is its own module that Codex and the ACP adapter both use. Grok's registration
takes the full account-home resolver signature, and D3's tests build hosts with the agent registry.

* fix(native-chat): Grok follows the ACP runtime's request contract and the managed process's close

A request the agent or a Stop cancels is answered with the agent's own cancelled reply by the code that
owns it (the runtime no longer answers a silent handler), so a Stop needs no separate decline pass. A
permission answer still being saved when the agent stopped waiting is reported unconfirmed, since the
protocol already answered it cancelled. Cancelling the agent's own turn is the plain cancel. Request
rows are matched under their generation-scoped ids. A refusal's reason comes from the dialect's wording
path. The child drops its own stderr tail and close policy for the managed process's, and a close
whose process tree was not proven gone is reported as the adapter contract asks.

* fix(native-chat): a Grok chat Orca already holds resumes without writing what Grok replays

A chat with a saved Grok session reattaches with session/resume where the agent offers it, else
session/load. Either way the call runs inside the translator's load window, so what Grok sends while
it reattaches (its saved exchange, a task the dead process left running, ended by the restart) opens
no turn and writes no row; only context usage reads on. A reply an Orca or Grok crash cut short is no
longer completed from Grok's saved history: it reads like a Claude or Codex chat's, with the existing
notice. The attach window also closes after a failed attach, and a created session that session/resume
reports missing is replaced like one session/load reports missing.

The replay reconciliation is removed: the lane no longer reads the journal, and D3's replayed-input
grammar test and completed-turn check in the assembler go with it.

* refactor(native-chat): a failed Grok reattach needs no window close of its own; its lane is replaced

* test(native-chat): D3's merged tests use the shipped declarations and the launch options main requires

* fix(native-chat): typecheck fallout of the base merges; any agent's empty chat is reusable

Main's idle-empty-chat lookup and launch join now take any registered agent, as the rest of the
launch path does. The refusal check moved into the prompt turns and the prompt-block conversion beside
the turns that send it, keeping both files in their line limit.

* fix(native-chat): a Grok Stop ends the process once Grok settles its turn; the next send resumes

Grok's session/cancel ends only the running turn: work it already moved to the background keeps
running and can begin a turn of its own after the person pressed Stop. Stop is now a session
boundary, as it is for Claude: the cancel answers open requests and lets Grok end the turn, the host
waits a bounded grace for that, then ends the process; the next send relaunches and resumes.
The adapter's own bounded close of a turn Grok began is gone. Its named-turn check stays: the host
ends the session unless the provider declines a Stop naming a turn that has since ended.

* test(native-chat): a Grok Stop ends the process only after Grok answered the cancel

* fix(native-chat): Steer on a Grok card cancels the running prompt, then sends it

A send that reached Grok while a prompt ran was held in the adapter until that turn ended: Steer
on a queued card took the card out of the host's editable queue and meant 'send after this turn'.
It now cancels the running prompt (session/cancel; the session stays) and sends as the next prompt
once Grok answers the cancel, as the common pattern does; a steer behind another cancels it in
turn, so the last one runs. The adapter holds a send only while that cancel lands, so its general
held-send queue and its holdsDispatch report are gone (every send it holds has its turn open in
the journal). An older client's mid-turn send takes the same path. capabilities.steering is
unchanged and still unread.

* refactor(native-chat): a close or Stop cancels a start through the acquire's own abort signal

The host owns the acquire it runs, so it now owns its cancellation: each attach's acquire gets an
AbortSignal, aborted from outside the session's queue by a close and by a Stop admitted now (the
same admission rule as before). The optional abandonStart adapter hook, the router's fan-out to
every adapter and the ACP adapter's session-keyed start map are gone; the ACP adapter keeps an
unkeyed set of starts only so quit can prove their children gone, and keeps a failed start's
unproven child until its exit is proven.
The hook also let a later close ask that child again. The host now does that from state it holds:
a close of a chat with no live child whose record still names an owner process with no death
evidence asks the adapter to release it. The answer is not recorded as proof (the lease probe
does that), so an owner pid an earlier Orca left is never killed or marked gone. Claude and Codex
ignore the signal and hold no such child; their release is a no-op (tested).

* fix(native-chat): a Grok crash that closes stdout before its exit still ends with Grok's last words

On macOS and Linux the agent's stdout ends before its exit is observed, with or without the
supervisor's EOF forwarding, so the connection's loss closed the journal first and its error text
became the session's ended reason, dropping Grok's stderr. The reason is now read at the proven
exit: the agent's last words when it left any, else why the connection closed. The failure already
carried them. Comments that assumed the exit comes first, that early frames past the cap refuse the
start, and that dispatch re-checks image support are corrected.

* fix(native-chat): nothing Grok sends while a held chat reattaches is written, marked as replay or not

The reattach window relied on the dialect's replay verdict, and Grok's frames read as live unless
they carry isReplay, so an unmarked chat frame during session/resume opened a turn that never
ended. D3 now marks every frame inside the window as replay before the translator reads it, so the
translator keeps only context usage whatever the agent marked; options and commands are still
adopted. The translator's load semantics are unchanged.

* test(native-chat): a Stop after a resume finds no turn an unmarked old reply opened

* test(native-chat): a resumed Grok chat keeps its last context reading; the resume refreshes only the window

* test(native-chat): a Grok background task a Stop ended reads as stopped reporting

* refactor(native-chat): quit's stop of each start answers through one promise kind

* fix(native-chat): quit aborts every start the host has in flight before draining attaches

A Grok that never answered its handshake held quit until the start's own 60 s bound, past the
20 s quit deadline. The host's teardown now aborts each in-flight acquire (and any the drain
still begins), so the adapter's own quit controller and its map of starts are gone: a start
has one canceller, the host's signal.

* fix(native-chat): a Grok start's abort stops reaching its child once the start has returned

The listener stayed on the host's signal until the attach finished committing, so a Close in that
window killed the now-live child behind the host's back and it read as Grok crashing. The start
now detaches it when it ends; a later Close goes through the session's own stop.

* fix(native-chat): a close or Stop during any attach phase stops the start before it launches

The attach began its abort controller only after reconciling leases, resolving recovery and
probing the previous owner, so a close or admitted Stop in those phases reached nothing and Grok
launched anyway. The controller now begins first, and the acquisition checks it before asking the
adapter to start.

* test(native-chat): a close during the attach's owner probe asks no adapter to start

Also renames the close test after the hook it no longer exercises.

* test(native-chat): a close's re-ask closes a Claude or Codex child a failed cleanup left

The re-ask is not a no-op for them: when the adapter still holds the child its cleanup could not
prove gone, the close stops it again as a requested close, and Claude persists the handle of the
conversation it ran so the next send resumes it. Corrects the tests' and comment's wording; the
close awaits the re-ask, bounded by each adapter's kill ladder.

* fix(native-chat): Steer during a turn Grok began itself cancels it and sends once it ends

A send while Grok ran a turn of its own (a background task waking it) went straight to Grok, which
queued it behind that turn where Orca could no longer withdraw it, while Stop treated the same turn
as the running reply. The send now waits as a steer, the turn is cancelled once, and the message
goes when the turn ends; a Stop withdraws it and an exit rejects it as never sent.

* test(native-chat): a steer whose cancel Grok never answers ends Grok and is rejected as never sent

Pins the bounded steer cancel kept from the runtime: past the bound the connection closes, the
running reply reads unverifiable, Grok's end reads as its exit, and the waiting steer is rejected
as never sent.

* fix(native-chat): a Grok crash stays a crash when a stop lands before its exit is proven

After the connection broke and the close could not prove Grok's exit, any later stop Orca asked
for (the next start, a Stop, a Close) marked the child as closed by Orca, so the crash read as a
requested close and Grok's last words were dropped; a send meanwhile was recorded unconfirmed.
The connection loss now decides the cause, and a send on that session is rejected as never sent.

* test(native-chat): fixtures this PR's registered Grok and desktop capability made stale

CI's unit shards failed on tests outside the PR's own lists. Each encodes something this PR changes
on purpose: Grok is now a registered agent (the seam test's unregistered agent is now Cursor); the
desktop now advertises registered agents (the restart-offer tests' older client drops that
capability explicitly); the attach context carries the start's abort controllers (the forget-status
double gains them); and the ACP real-host test rig sends to the host directly (listed beside the
other real-host rig in the send ratchet).

* fix(native-chat): a start quit stops is not the queued message's start failure

With quit now aborting a start it would have waited for, the delivery step recorded the aborted
start as the message's failure ("couldn't restart"). After quit has stopped delivery, the step
leaves the message to quit, which settles it as a close does ("The chat closed before this message
was sent."). The test that pinned quit waiting for that start and stopping its child now pins that
nothing is launched behind quit.

* fix(native-chat): a message sent after a Stop or close aborted a start gets its own start

A start the host aborts (an admitted Stop, a close, or quit) returned its refusal to the delivery
loop, which then rejected whatever was queued at that moment with "couldn't restart", including a
message the user sent after the Stop. The attach now reports that the host aborted it, and the loop
re-derives from the journal instead: what the Stop or close withdrew is already settled, a message
accepted since gets a start of its own, and quit's next step stops the loop. This replaces the
quit-only carve-out with the same rule for every abort and every agent.

* test(native-chat): the message sent after an aborted start is answered, so no settlement outlives the test

* fix(native-chat): a Grok model pick Grok never answers no longer holds Stop or Close

The pick runs on the session's queue. It now registers in the host's out-of-queue
abort registry beside a start, so a close, an admitted Stop or quit abandons it, and
the ACP adapter bounds it at 30 s like Claude and Codex. A late answer is still adopted.

* fix(agent-launch): a phone's launch opens a terminal for an agent whose chat it cannot show

agent.launch now reads the caller's capabilities by the rule tabs and restart offers
use (clientRendersStructuredAgent). A phone without registered-agents.v1 gets Grok as
a terminal again, as on main; the host's own callers and desktop clients are unchanged.

* fix(acp): strip every agent hook variable from the ACP child, from the shared list

ACP_CHILD_ENV_TO_DELETE was a second copy of the hook runtime keys that missed
ORCA_AGENT_HOOK_TRANSPORT; it now spreads AGENT_HOOK_RUNTIME_ENV_KEYS beside the pane
identity keys.

* refactor(native-chat): the mutation context carries the provider-wait registry itself

Keeps the host file within its line limit; one field instead of two closures over it.

* fix(agent-launch): agent.launch.v2 still vouches for Claude and Codex chats

The caller rule from the previous commit also turned Claude and Codex into terminals
for a client advertising only agent.launch.v2, whose contract says it opens a chat
(mobile retry-authority tests). Only an agent beyond those two now needs the client to
read it (clientRendersStructuredAgent); the test fixtures go back to what they were.

* refactor(native-chat): drop saved-history adoption from the timeline assembler

The common pattern discards the history a provider replays while loading a
session, so the assembler has no use for an input.history event.

* refactor(acp): drop session/load history adoption from the translator

The common pattern discards the history an agent replays during session/load,
keeping only what it says about the context window. Remove the adoption path
(acp-history-adoption.ts, the adopt option, and the historical background-task
liveness rewrite it fed) so load replay is always dropped except usage.

* refactor(native-chat): a pending input is only Orca's send now

Review follow-up to the adoption removal: drop the comment naming the
provider's saved message, and make requestedAt required since every pending
input comes from input.accepted.

* test(acp): keep the task-result status table on live frames

Review follow-up to the adoption removal: the result-status mapping was only
tested through adopted history, so run the same table on live frames, and
cover an unmarked task notice during a load being dropped.

* test(acp): a frame helper for a shell command Grok is running

* fix(acp): a Grok crash settles through the host's provider-exit batch, scoped to the turn it ended

A Grok crash ended the journal unverifiable before the adapter reported the exit, so the host's
provider-exit settlement found no running turn and wrote nothing: the adapter's failure (with
Grok's last words) never reached the journal, and a later stale-session pass wrote a bare,
thread-scoped cut-short row, so the partial reply was not folded as Claude's and Codex's are.

At a proven exit the ACP lane now ends its running turn interrupted at the exit instant, as the
host's exit contract expects of a child's own translator (Codex's does the same). When Grok's
stdout closed first (every POSIX crash), the turn is unverifiable only until the exit is proven:
the host's provider-exit settlement now takes the exit as proof naming the child's fence and
revises what that child left unverifiable in the same batch, with the turn-scoped row and the
adapter's failure. Claude and Codex write no unverifiable turn of a live child except a command
whose hand-off is in doubt; that turn is now revised at the exit instead of at the next open.

* test(acp): a crash seen first leaves the host no Grok turn to revise

* refactor(native-chat): what a gone generation left unfinished gets its own module

The settlement file passed 300 lines with the exit-proof revision. The unfinished-work reads
(capture, interrupted-by-the-exit, in-progress) are their own concept and move out unchanged,
apart from the exit proof they now take.

* refactor(native-chat): a watched exit revises what its child left unverifiable without reading Stop marks

An exit's own instant is the turn's end, so the revision needs only each row's fence: the
settlement's journal type gains itemFence alone, and the host test fakes say so.

* test(native-chat): drop the duplicate itemFence on the fake that already had one

* test(claude, codex): an exit whose stdout ended first still reports as it always did

The provider supervisor now ends Orca's stdout when the agent's ends, so on every crash EOF
arrives before the exit is seen. Claude's and Codex's connections report nothing at EOF and
report the exit, with its usual reason, once it is seen.

* fix(acp): reopen a chat with session/load, as the common pattern does

An agent that offers both now reloads its session instead of resuming it; the
reattach window still discards what it replays except context usage.

* fix(acp): drop the 60 s handshake bound; an abort fails the start's waits at once

Neither common design bounds an ACP handshake: Close, Stop and quit end a start
that never answers. The abort now also closes the connection, as a kill there
does, so the start settles even before the child's exit is proven. The
host-stopped start refusal only this bound produced goes with it; the idle
sweep keeps its words.

* fix(acp): a Stop naming an ended turn follows Claude's rule

It still stops nothing while another turn is live, but in the gap before a
follow-up's turn opens, which no client can name, it now stops what is in
flight and the session ends, as a Claude Stop does.

* fix(native-chat): a close no longer re-asks a failed start's unproven child

Neither common design retries that stop at Close, and Orca's Claude contract
re-asks only at the next start and at quit. The ACP adapter keeps the child
until its exit is proven and asks it again there, as Claude does.

* fix(acp): a message sent during a turn the agent began itself goes at once

Both common designs send it straight to the agent with no cancel; only Orca's
own running prompt is steered (cancelled, then re-prompted).

* test(native-chat): dismiss-all through a remote client's audience keeps a newer Orca's offer

Uses an audience production sends (one that cannot show every agent), per review.

* fix(acp): launch Grok as `grok agent stdio`, without the update and leader flags

The common pattern passes neither --no-auto-update, --no-leader nor
GROK_DISABLE_AUTOUPDATER; full access still adds --always-approve.

* fix(acp): an agent that ends its stdout, or answers unreadably, is not a lost connection

As in the common pattern, only a broken stdin (or Orca's own close) ends the
agent; one that closed its output but can still be written to stays until a
Stop, a close or its exit. The provider supervisor goes back to its base
content, so Claude and Codex no longer get the forwarded stdout end either.

* fix(native-chat): a person's close joining a failed one still binds the turn its child end cuts

On main every close of the chat writes its own Stop and settle. Here a later close joins the
first and writes no row, and the first's settle closed when its kill failed, so a turn that opened
in between and was cut by the next close read as failed. A person's close joining a person's close
whose Stop opened a settle now reopens that settle until its attempt is done.

Tests: a close whose kill failed still closes its settle; a turn opened between a failed close and
the next reads as the person's cancellation (each fails without its half of the fix).

* test(native-chat): Grok opens as a chat only behind the structured-chat setting

agent.launch and orchestration worker-start read the same setting as the
renderer route; pin both states for Grok on each. The setting's description no
longer names only Codex and Claude, in every catalog.

* docs(acp): generic ACP comments say what holds for every agent, not Grok

Stop ends the session for every ACP agent, as in the common pattern; the
adoption hook comment goes (adoption is not planned); a failed start's child is
retried at the next start or quit.

* test(claude, codex): type the EOF-before-exit test's streams; the supervisor no longer forwards EOF

The Claude test wrote to the child's stdout and stderr through their Readable
type, which the node typecheck rejects; it now holds its own PassThrough
streams. The comments no longer credit the reverted supervisor change.

* feat(acp): a steer's cancel asks once and never ends the agent

The runtime had one cancel: send session/cancel, wait at most 10 s for Orca's prompt to settle,
then close the connection, which ends the agent. A steer used it too, so a slow agent lost its
process just because the person added a message. requestSteerCancel() now sends session/cancel
once per prompt, cancels the agent's open requests and answers later permissions cancelled, and
never bounds or closes: the prompt's own reply ends it and the steer's prompt follows. cancel()
stays the Stop: bounded, then close. A Stop after a steer still bounds and closes. Both cancel
paths move into acp-prompt-cancel.ts over one cancel channel.

* chore(native-chat): keep the record store and recovery capsule under max-lines after the main merge

* fix(acp): a repeated steer shares the cancel in flight; say what the caller owns

Per review: a second steer before the first write lands returns that write instead of resolving
early. The steer's JSDoc says the wait for the prompt's reply is unbounded and that a prompt that
fails instead must not take the steer until the caller rebuilds the session; the Stop's says a
prompt that settles in time leaves the agent for the Stop's owner to end. The steer test now gives
the runtime a handler that would allow: the open permission's signal aborts and the late one never
reaches it.

* fix(native-chat): drop the stopDelivery the A3 merge doubled

* fix(acp): a steer's cancel asks Grok once and never ends it

A steer now uses D1's notify-only cancel. Two messages sent during a reply Grok began itself
cut that reply, as the common pattern does, and then both run; before, the queued first
message could not answer the bounded cancel and Orca ended Grok although Grok answered.
A Stop keeps the bounded cancel and its 4 s grace.

* fix(acp): a permission Grok asks with no prompt of Orca's running is declined

During a turn Grok began itself nobody asked it to act, so the request is answered
cancelled at once instead of opening a card that waits, as the common pattern does.

* fix(acp): a Grok that dies while starting is reported with its own last words

A dying process's stdout ends before its exit is seen, so the start failed as a closed
connection and Grok's stderr was lost. A start whose connection closed now waits, bounded by
the Stop grace (or a Close/Stop), for the exit before it is told.

* test: a Stop after a steer sends its own cancel; drop the import the A3 merge doubled

* test(native-chat): main's Stop-note test builds its turn context with the agent registry

* test(claude): say why the close test's fake child cast is safe

* test(native-chat): build the Stop-opened-turn test's identity and turn context the current way

The test (#25056) landed before the opaque provider handle (#24991), so main still built
the old {kind, threadId} handle; the turn context also needs this branch's agent registry.

* test(native-chat): build the Stop-opened-turn test's identity with the opaque handle

The test (#25056) landed before the opaque provider handle (#24991), so main still built
the old {kind, threadId} handle.

* test(ratchet): require src/main/provider-process now that it has landed

* test(native-chat): keep main's opaque-handle import in the Stop-opened-turn test

Main's #25706 and this branch both added the import at different lines; the merge kept both.

* test(native-chat): keep main's opaque-handle import in the Stop-opened-turn test

Main's #25706 made the same fix as this branch at a different line; the merge kept both imports.

* feat(native-chat): record a fresh provider conversation that replaced one the agent could not restore

A chat whose saved conversation the agent cannot reopen can now continue in a
fresh one: the handle chain records the new conversation as a creation that
replaces the lost one (which, why, and when), keeping every earlier link.

Rows keep a shape older builds read: the stored chain starts at the latest
replacement and carries the earlier links inside it.

* test(native-chat): build this stack's journal identities with main's opaque provider handle

Main's #24991 replaced the {kind, ...} handle with {transport, agent, nativeId}; three test
files from this stack still wrote the old shape. Same lines the downstream ACP branch uses.

* docs(acp): every reattach drops the agent's replay, not only for a chat the journal holds

* refactor(native-chat): store a replaced conversation flat; refuse it where older builds read the row

Older builds only read Claude and Codex records, so the nested stored form
protected rows no replacement can reach while adding a cap mismatch after a
downgrade. Store the chain as held, refuse a replacement in a Claude or Codex
chain until one has a stored shape older builds read, and refuse a supersession
key on a replacement that names no creation in the chain.

* refactor(native-chat): read hosts' structured agents from the app-shell services

Main grew the startup hydration hook to its line limit; the host agents sync is an app-lifetime subscription like the structured session tabs sync beside it, so it moves there.

* Use current provider handles in transition tests

* Use current provider handles in timeline fixtures

* test(native-chat): prove replacement rows survive downgrade and re-upgrade

* Require the ACP directory in the runtime import check

* test(ratchet): require src/main/acp now that this PR lands it

* feat(acp): a saved session the agent cannot reopen continues in a new one, with one warning row

When session/load (or session/resume) of a saved ACP session fails, the chat starts a new session and records it as a creation that replaces the lost one (#25747's 'replaces' link), and writes one warning row that the agent no longer remembers the earlier messages. A created session the agent reports missing is still superseded silently; a signed-out agent or a start that is over (Close, Stop, a lost agent) still fails the start.

* chore(acp): rewrap the acquire header comment

* test(acp): a start closed while the agent reopens fails without opening or announcing a new session

* Let ACP connections own their supervised agent process

* Preserve ACP cleanup evidence and isolate exit observers

* Expose ACP cleanup observations and type the permission fixture

* refactor(native-chat): the registered-agents capability lives in its own module

Main's growth put protocol-version.ts one counted line over its 300-line limit once the capability
was added; like main's other per-feature capabilities, it now has its own module, and importers read
it from there.

* refactor(acp): one connection owns the Grok process and its protocol

D3 now opens each ACP agent through createAcpAgentConnection (ACP-ALIGN #25810): one object spawns the
process on the execution host, owns its stdio and protocol, and reports its proven exit. It is built and
tracked before the handshake, so a start's abort (Close, Stop, quit) still reaches it, and a failed start
keeps that same connection for the next close to retry rather than spawning another process.

Deleted: the spawnAcpStructuredChild wrapper and its test, the raw-stream runtime assembly, the caller's
exit -> runtime.close wiring, the stdout-EOF heuristic (the connection no longer treats stdout EOF as
exit), and the 10 s steer/Stop cancel bound with requestSteerCancel. Reader control maps to
pauseReading/resumeReading; a close is connection.close after the host's existing 4 s Stop grace.

The adapter owns what the protocol no longer does: one session/cancel per running prompt however many
steers arrive (cleared with that send's settlement, retried after a failed write), and a Stop or steer
answers every open agent request the person has not already answered with the agent's own cancelled
reply. An answer already being saved when the Stop lands is sent.

Tests: blocked cancel write never holds Stop's grace, two quick steers send one cancel, a failed cancel
write is retried, a real process exiting while a child holds its stdout ends the session, and the
existing start-abort, retention, crash, connection-loss and reload-failure suites on the new rig.

* fix(acp): Grok signs in on its own machine with its API key or cached sign-in

When Grok reports that it needs authentication, Orca now names a sign-in method on the machine Grok runs
on, read from the same environment Grok was launched with: xai.api_key when XAI_API_KEY is set there and
Grok offers that method, else cached_token when Grok offers it, else none and the chat keeps the existing
not-signed-in refusal. The rule lives in Grok's launch spec; the adapter applies any agent's rule for new
and reopened sessions through the protocol client's caller-named method (authenticate, then retry once).
No new sign-in UI; interactive methods are never chosen.

* fix(acp): the adapter decides which of Grok's requests reach the person

The turn owner now admits every agent request, permission or question, from its own turn state: a
request reaches the person only while Orca's prompt runs and no steer or Stop is cutting it short (a
question may also come from a turn Grok began itself, until a Stop). Anything else gets the agent's
own cancelled reply and opens no card, so a question arriving after Stop or during a steer never
appears. A steer, like a Stop, withdraws the requests already open; an answer already being saved is
still sent. The protocol client's abort-on-cancel path is no longer used: after the connection
change its request signal aborts only when the connection closes.

* feat(native-chat): add inactive Pi RPC transport foundation

* fix(acp): a plan Grok proposes shows as a plan, with no approval card

When Grok leaves plan mode it asks the client to approve its plan (x.ai/exit_plan_mode). Orca showed a
blocking 'Approve plan / Request changes' card for it; the common pattern has no such gate. Now the
plan goes into the chat's existing Plan row (the plan-document status row Codex and ACP plan updates
already use) and the request is answered at once with 'abandoned' plus feedback telling Grok to stop and
wait for the person's feedback or a request to implement it in a later turn, so nothing is approved on
the person's behalf. Dialects gain settleRequest for requests answered without asking anyone.

* fix(orchestration): worker-start opens a Grok worker in a terminal, as before

With the structured chat setting on, worker-start decided 'structured' for Grok and then the structured
worker factory (Claude and Codex only) refused it, so the start failed; main opened a terminal Grok
worker. Worker-start now decides with no registered agents beyond Claude and Codex, so Grok gets a
terminal worker as before. agent.launch and the app's own launches still open Grok as a structured
chat. Temporary until structured workers take registered agents.

* fix(acp): a prompt answer Orca can't read ends the turn instead of hanging it

A session/prompt rejection that was not the agent's own error answer (an answer that fails Orca's
schema, or one too large to read) left the turn running: the next message became a steer with nothing
to cancel and was never sent or settled, and Stop waited its full grace. As in the common pattern, any
prompt failure now ends the turn as failed (a failed-turn row without words, since none are the
agent's) and settles the send, so the next message goes. Only a closed connection keeps the send
running, for the connection-loss path to settle.

* feat(native-chat): add bounded RPC reading control

* fix(acp): send Grok's prompt-identity extension only to agents that echo it

session/prompt carried _meta {promptId, requestId} for every ACP agent, though only Grok's dialect
echoes it (injectedPromptIdentity). Now only an agent whose dialect declares it gets the extension;
other ACP agents get a plain prompt.

* refactor(native-chat): the registered-agents capability lives in protocol-version again, as on main

This reverts 0ef6d21815. That commit moved the capability to its own module only because main's
protocol-version.ts was then one counted line over its limit; main now defines it there itself within
the limit, and main's new restart test imports it from there. Main's test also reads the desktop's
capability list as an older client; on this branch the desktop advertises registered agents, so its
older client is that list without this one capability.

* test(acp): read the sign-in method with a schema, not a type assertion

* refactor(native-chat): composer transport and Stop control in their own modules

Main's rewind change (#19338) brought NativeChatStructuredSession.tsx and use-structured-agent-session.ts
to their line limits, leaving no room for this branch's image-acceptance and unpublished-Stop lines.
The composer's transport (sends, commands, options, image acceptance) moves to
use-native-chat-structured-composer-transport.ts, and whether Stop shows and what it does moves to
structured-agent-session-stop-control.ts. Behavior is unchanged; the runtime cast on the composer's
'local' | 'remote' is now a typed return.

* test(native-chat): read registered agents by id, as main's structuredAgentsReadBy now takes

Main's A3 squash changed structuredAgentsReadBy to take agent ids; this branch's test still passed
{ agent } objects (CI typecheck TS2322).

* Add Pi structured chat over its native RPC mode

* Use shared provider spawn identity and base environment

* Complete Pi startup ownership and prompt delivery safeguards

* Use generic failure copy for Pi RPC sessions

* Admit finalized Pi output before session eviction

* Apply Pi client capability checks to all chat routes

* Keep older Pi versions on terminal chat

* Use supervised process support checks for Pi launches

* Complete the Pi location-test adapter fixture

* Retain the settled-work extraction in the main merge

* Use the settled-work module in the new reasoning sweep test

* Test that Pi prompt alerts skip clients that cannot read Pi

Main added prompt alerts to the turn-completion stream; the merge extended Pi's audience filter to them.

* Pin why a timed-out write closes the agent connection only once it is being written

A line still waiting in the queue is dropped and only its request fails, as before. A line already handed to the stream cannot be taken back and would hold every later write, a cancel included, so that timeout closes the connection; tests now cover both for the shared queue and for ACP.

* Type the prompt-alert fixture as the wire's prompt attention

Its host id is a branded type; the literal only checks under the wire type, as the completion fixture beside it does.

* Run the Pi launch-resolution test in the Node runtime project

It opens a real SQLite record store, which main's new boundary check now requires to run on Node.

* Pin that a Pi chat reopened after a restart resumes its stored session file

A fresh record store reading the journal back from disk must hand the launch the session file the chat proved before the restart, and the spawn must carry it as --session.

* Show an explicitly empty text answer as "Empty answer", not as unreadable

Live QA: answering a Pi input dialog with nothing (which Pi accepts) left the resolved card reading "Selected answer unavailable", the wording for an answer Orca cannot read. The receipt joined the answer's labels and text and turned an empty result into "no answer". It now keeps an answer whose text is present but empty (or whitespace) as an empty answer, shown as "Empty answer"; an answer naming neither text nor a known option still reads as unavailable.

Also pins that the editor dialog submits the text the user edited, not its prefill.

* refactor(pi): check and resolve Pi's binary through the shared version probe and command resolver

Pi's own `--version` runner and PATH lookup are gone. Create support and
every launch now resolve the binary through resolveStructuredAgentCommand,
so the Pi Command setting picks the binary both check and spawn, and an
unrunnable Command is refused at launch with agentCommandNotRunnable as for
the other agents. The version check runs through probeAgentCliVersion with
the same rule as before: stable 1.x of the current package; the older 0.x
package keeps the terminal chat. Pi's launch reads the shared per-agent
environment overlay and Command settings instead of Pi-only runtime deps.

* feat(pi): run stable Pi from 0.84.0 in the structured chat, not only 1.x
2026-10-07 17:44:45 -07:00
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