PR #3825 added a shared bootstrap context to capture delegated
child-session retry payloads before the first prompt dispatch, so
empty-history failures could still retry through the fallback chain.
The PR's own regression test failed on clean root bun test after merge
(6828 pass / 1 fail). PR #4044 reverted the merge to keep dev green.
Ship v4.2.0 with the bug documented and a workaround so users have an
explicit story for the unfixed delegated child-session early-failure
path. Reland targets v4.2.1 once the regression test is stabilized.
Closes BLOCKER-4 (Path B - documentation, reland deferred to v4.2.1)
Race-condition and concurrency fixes must include reporter-verified repro
confirmation before the originating issue is closed. CI green is necessary
but not sufficient.
Closes M12
PR #3825's fac90d69f introduced a shared bootstrap context to fix delegated child-session fallback when the first prompt fails before any session history is persisted. PR #4044 reverted that fix because its own regression test failed on a clean root suite (6828 pass / 1 fail). The bug remains unaddressed in v4.2.0; reland is deferred.
This commit documents the symptom, history, workaround, and tracking issue so users have visibility.
Closes BLOCKER-4 via Path B (documentation).
Refs PR #3825, PR #4044, issue #4059.
PR #3825 introduced a delegated child-session bootstrap to capture first-prompt retry payloads before history is persisted, addressing the empty-history fallback gap. After merge the PR's own regression test failed on clean root bun test (6828 pass / 1 fail), so PR #4044 reverted it. Ship v4.2.0 with the bug documented and a workaround so users have an explicit story for the unfixed delegated child-session early-failure path. Reland will target v4.2.1.
Closes BLOCKER-4 (Path B - reland deferred to v4.2.1)
After BLOCKER-2's post-dispatch hold landed (the gate now keeps the
reservation through the hold window regardless of whether the dispatch
threw), the synchronous retry path inside promptSyncWithModelSuggestionRetry
hit 'reserved' on its own second attempt because the first attempt's
post-dispatch hold was still active.
The first attempt's failure is ProviderModelNotFoundError, which is a
synchronous SDK rejection - the prompt never reached the server, so
there is no durable session state worth protecting from a duplicate
injection. Release the post-dispatch reservation hold explicitly before
the suggested-model retry so the second attempt can dispatch immediately.
Fixes test regression introduced by the gate hardening (BLOCKER-2 fix).
Extracts the parent-wake coalescing logic (pending/dispatched wake maps,
timers, notification reply assembly) from manager.ts into a standalone
ParentWakeNotifier class. Takes dependency-injected client, directory,
and an enqueueNotificationForParent callback, so the manager can delegate
parent-wake state to a narrow API.
This commit only introduces the new module; wiring manager.ts to use it
is a follow-up commit so the refactor stays atomic (HIGH-9 step 1 of 2).
Closes HIGH-9 (step 1: extraction)
Refs HIGH-9 (step 2: manager.ts integration deferred until verification)
Co-authored-by: manager-extract (deep / gpt-5.3-codex high)
Replaces the previous regex-based audit (6 line-prefix patterns) with a
TypeScript Compiler API AST walker that detects raw client.session.prompt
and client.session.promptAsync access in any access shape:
- direct call (existing): client.session.promptAsync(...)
- property access reference: const x = client.session.promptAsync
- bracket access: client['session']['promptAsync']
- optional chaining: client.session?.promptAsync
- type cast aliasing: (client.session as { promptAsync }).promptAsync
- destructuring: const { promptAsync } = client.session
RAW_PROMPT_ALLOWLIST captures two legitimate callers that route through
the gate but reference promptAsync as a property value:
- src/plugin/event.ts wires a client facade for team-idle-wake-hint
- src/hooks/session-recovery/recover-unavailable-tool.ts guards capability
before dispatching through promptAsyncAfterSessionIdle.
Each allowlist entry carries a justification string so future contributors
understand why the exception exists.
Closes HIGH-5
Co-authored-by: audit-ast (deep / gpt-5.3-codex high)
Adds regression coverage for BLOCKER-1 (dispatch timeout releases
reservation for next caller after stalled upstream) and BLOCKER-2
(post-dispatch error preserves the post-dispatch hold so an immediate
second caller observes the reservation and is gated).
Both tests subscribe-first on the promptAsync call count and assert
status transitions without sleep-based synchronization. dispatchTimeoutMs
is the system under test, so passing it explicitly as 1ms in those tests
is the SUT, not a sleep-as-synchronization (per test-discipline.md).
Closes BLOCKER-3 (dispatch timeout + post-dispatch coverage)
Co-authored-by: gate-tests (deep / gpt-5.3-codex high)
BLOCKER-1 (dispatch deadlock): wrap session.promptAsync / session.prompt in
withDispatchTimeout() that uses Promise.race with a default 30s timeout.
Stalled upstream responses no longer hold the reservation forever.
BLOCKER-2 (post-dispatch failure released too early): collapse the
holdReservationAfterDispatch flag into a dispatchAttempted state so the
post-dispatch hold runs in the finally block regardless of whether
promptAsync resolved or threw. AGENTS.md's documented race window where
promptAsync 'returns before durably accepted, later failures arrive as
session.error' is now covered.
HIGH-6 (sync/async protocol duplicated): extract dispatchAfterSessionIdle
internal runner. promptAsyncAfterSessionIdle and promptAfterSessionIdle
become thin wrappers passing client.session.promptAsync vs prompt as
the dispatch callback. Future reservation semantics fixes apply once.
HIGH-7 (releasePromptAsyncReservation prefix foot-gun, partial): tighten
reservationSourceMatches to require prefix strings to end in ':' so
release cannot accidentally free reservations whose source merely starts
with the same identifier characters. Symbol token verification is still
internal-only as the audit invariant prevents external callers from
bypassing the gate.
Closes BLOCKER-1, BLOCKER-2, HIGH-6
Refs HIGH-7 (prefix hardened; token-required release deferred to follow-up)
Co-authored-by: gate-correctness (deep / gpt-5.3-codex high)
The next release adds public exports for the prompt-async-gate primitives
(promptAsyncAfterSessionIdle, promptAfterSessionIdle,
releasePromptAsyncReservation, DEFAULT_PROMPT_ASYNC_POST_DISPATCH_HOLD_MS)
and introduces new safety semantics that affect 13+ internal hook callers.
Per semver, adding public exports mandates a MINOR bump from 4.1.x.
No public API removals or breaking signature changes, so this is NOT MAJOR.
Closes pre-publish-review version-bump consensus
Co-authored-by: api-surface (deep / gpt-5.3-codex high)
createPluginModule and PluginModuleDeps were exposed at package entry as
a test seam. Their export creates accidental public TS API obligations
for internal manager/tool/hook constructor types. Move to
src/testing/create-plugin-module.ts so only tests reach them.
Closes HIGH-8
Co-authored-by: api-surface (deep / gpt-5.3-codex high)
- Fixes BackgroundManager to launch promptAsync before invoking the blocking tmux callback.
- Adds regression test to ensure promptAsync is called before tmux callback.
YeonGyu-Kim