test: supervise receiver crash children through cleanup

[yihanzhu]

The receiver crash tests retain one direct owner until signal retirement, authentic wait status, group absence and pipe EOF are confirmed. Cancellation stays observable through diagnostic publication. Connected blocked-output and capture-expiry controls exercise the actual deadlines, using the native Python 3.9 shared clock. Actual supervisor records and inventories now appear in bounded CI log output so independent review can inspect their measurements after the runner disappears.

Closes #347. Implements accepted spec #393 and plan #394 on the preserved branch. Only scripts/test/replay-materialization-result.test.sh changes. All 13 original outer assertions and the 654-case oracle matrix remain intact.

review_size: accepted-exception — accepted range 1,450–2,100 added plus removed lines; current diff against base17565733df166fcf939bfee5d7dd50d2f986c395 is1,838 additions and20 removals.

Round2 head8b46ac4e7c8da46d2d77631e63db61619305d7d2 adds158 lines of evidence output. Source SHA256eef85b6fbb9409cafc695d0ce4cb62313564aac0e4295da1312de4945c4f23d5. Affected emitter validation passed against the authentic retained native root, including explicit missing/obstructed records for deliberate publication failures. This validates the emitter; it is not a new complete native or Linux run. Shell syntax, pinned ShellCheck0.11.0 and diff checks passed. Fresh independent round2 review and current quick CI remain pending; no final PASS is claimed.

Prior complete native evidence at c956c3e passed with actual exit0,17 outer assertions,72 controls and654 original cases. Raw log SHA2562aab4fbd29d564c8a487f6fc1ff345fb5c3252ef4ea9ab4ecb923855bdabac2f. Dispatched Linux35682173537 finished red: receiver-containing shard2 and shards3/4/6 passed; shards1/5 found stale package bindings and copied-span provenance after #392, tracked separately in #397. Independent round1 review accepted the native evidence and receiver source fixes, but required retaining the new Linux phase/control records outside ephemeral scratch. That is the bounded round2 repair; authentic fresh Linux evidence and the complete integration milestone remain due. The quick gate does not replace them.

The same branch, claims, review history and intermediate failed validations remain preserved. Missing older temporary proof was not fabricated; recovered sources and new evidence have exact provenance. Requested author gpt-5.6-sol/medium; separate independent reviewer gpt-6-astra/xhigh. Actual serving runtime identities are unexposed. This test-only change installs or activates nothing.

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[yihanzhu]

PR 395 — independent G3 review, round 0

Reviewer: /root/receiver_spec_review_astra, independent of the Sol implementation author and the separate artifact author. Requested routing for this critical ownership review: gpt-6-astra / xhigh, clarified directly by the manager. The earlier follow-up said high; it did not establish a runtime configuration change. Actual runtime model and effort are not exposed, so neither is attested.

Exact reviewed tuple and scope

• Repository/PR: yihanzhu/ystack, test: supervise receiver crash children through cleanup #395.
• Branch: ystack/impl/receiver-crash-supervision.
• Head: 539d20dcd30140e5ab78409062c8e2267d7c2704.
• Base: 519982cf2968a472b3672cf3be8006a971460744.
• Worktree: /private/tmp/ystack-codex-resume-20260921/wt-receiver-impl, clean on inspection and recheck.
• Only changed path: scripts/test/replay-materialization-result.test.sh.
• Actual diff: 1,572 additions and 20 deletions, 1,592 added plus removed lines. This is within the accepted 1,450–2,100 forecast.
• Test source SHA-256: 55800b1fa7b28a47bbd6f640b78cb6fee5e244ae0d1ae914b2a9adb63cfd6d1b.
• Intent blob: ae56dfd965dd4fb2a5b2cf726769954d2a5052cc.
• Spec blob: ba8d7bf7fdaffca1ab8341f103028c0aa4cec016.
• Plan blob: 913b93e3af58f202c3659d7f91104815c407dc25.

A fresh read-only GitHub API read returned this exact head/base, PR OPEN, and only round-0; merge-ready was absent. The body uses Closes #347, identifies the one allowed test path, records one size-exception token/range, and honestly leaves complete native and full Linux evidence pending. The manager reports the intake build claim released. I did not mutate or revalidate the full historical claim-comment chain in this blocking review.

Applicable current rule blobs were verified: AGENTS 251684bf8eb26c3b162edbc0d92af5eaef95cd1d, REVIEW 957bfd044e19dd4c6d6e4cfcd4d0a61e1760b62e, Roadmap authorization 712fc135b1b2f845776466e54e1b938c4c9be101, and minimal CI decision 7a2097d35f3cebbc007bbce0c25cee22578a1b32. The September 21 direct handback applies to the parent manager session 01a09ae7-9bd4-77f3-8c15-966143bebff4. It permits this bounded repair and review; it does not waive Important findings or the accepted native/Linux proof.

I reviewed the changed implementation and controls in Bugs, Security and Compliance passes, read the complete accepted spec/plan and prior nine-finding preflight, checked the unchanged original-oracle source mechanically, and inspected raw retained focused evidence. A first large diff output was truncated; subsequent source-range reads covered the omitted coordinator/control code. No test, generated helper, candidate code or signal/process cleanup was executed. Only this scratch report was written.

Important findings

R1 — Bugs: cancellation during diagnostic publication can still seal success

Source lines 738–740, 751–781 and 1202–1256, especially the last consume_cancellation at 1204 and final outcome at 1256.

The ordinary path consumes cancellation at diagnostic-handoff and then writes captures, emits diagnostics, serializes the final record and publishes completion without another cancellation consumption. The signal handler only stores the signal. Consequently an INT/TERM delivered to the coordinator during emission or completion publication can leave primary_failure null and exit zero. A signal before the final serialization can even appear as a non-null pending_signal in an otherwise successful completion. A valid cancel record arriving in that interval is likewise not consumed by the coordinator. The Bash path retains its own signal outcome, but that does not cover direct coordinator signals.

The 24 boundary controls do not close this gap: the diagnostic-handoff fixture waits for the signal before the last consumption. They prove cancellation immediately before publication, not during publication. This is the remaining portion of prior F2, rather than a new cancellation guarantee. The plan explicitly requires preservation of the first outcome through publication/completion and cancellation checks between bounded I/O chunks.

Minimal direction: carry deferred cancellation through the normal emission/publication outcome path, independently of fixture mode, with a clear bounded final handoff. Cancellation observed while this path still owns the outcome must prevent success; retain one-shot signal retirement. Add an acknowledged publication-window control using the actual coordinator. Do not claim atomic ordering for independent events or require impossible delivery after process exit. This finding is established by source analysis; I did not execute a race reproduction.

R2 — Compliance/Bugs: the blocked diagnostic sink proof never blocks a write

Source lines 751–781, 1373–1378 and 1762–1774.

For diagnostic-blocked-sink, the shell creates the FIFO but deliberately starts no reader. os.open(..., O_WRONLY | O_NONBLOCK) therefore fails with ENXIO before the write loop. The control explicitly asserts Errno 6. It never exercises BlockingIOError, progress starvation or expiry of the five-second diagnostic write budget. The accepted spec/plan require a real blocked sink, distinct from a broken sink, with bounded failure and retention.

The retained focused record confirms this exact behavior: control-diagnostic-blocked-sink/completion-aac900a93c8f68b442b3a07189165c9c.json, SHA-256 67048644d441b71a4d018cf63b3184ebd3aa164741ed84ee1b81922d04767474, contains ENXIO, diagnostic_emitted=false, and total elapsed 0.021830667 seconds. It is an open-failure proof, not a blocked-output proof.

Minimal direction: establish a real connected sink whose non-draining/full state reaches the bounded write path, retain acknowledgment of that state, and assert expiry/failure/retention under the original budget. Give its fixture owner a bounded cleanup path. Preserve broken-sink and restoration-failure coverage. The normal reader launch also has no ready acknowledgment before the writer's one-shot nonblocking open, so ensure connection establishment does not depend on the reader winning a scheduling race. No public framework or dependency is needed.

R3 — Compliance: capture-drain-expiry fabricates an EOF failure after successful draining

Source lines 941–949, 1648–1655 and 1838–1841.

finish_capture() performs the ordinary drain, then the capture-drain-expiry case forcibly assigns stream_eof['stdout'] = False. Its fixture is the same promptly killed ready child; no retained writer or read-boundary condition drives the drain loop through its deadline. Thus the control manufactures the desired result after the operation instead of proving actual drain-expiry handling. This is the same kind of proof substitution that prior F6 rejected for cleanup faults.

The retained focused record control-capture-drain-expiry/completion-534aafbdd09caeec235d7bc20cd64818.json, SHA-256 9ef8419def7c804783650221aae9f038c93136964edb7fccd213d735055f33d8, reports elapsed 0.021496666 seconds, with a cleanup deadline roughly ten seconds later. It reports missing stdout EOF only because of that assignment. The retained marker and expected failure do not establish an exercised deadline.

Minimal direction: make the real capture operation remain incomplete through the existing cleanup deadline, or inject the relevant pending result at the actual read boundary so that the real deadline logic runs. Assert the reached boundary, unchanged deadline, incomplete capture, primary/cleanup facts and retention. If a real writer can survive, give it finite lifetime or separately verified rescue as already required. Do not supply cleanup credit from rescue or overwrite measured EOF facts.

R4 — Bugs/portability: wrapper and coordinator monotonic values use different origins on native Python 3.9

Source lines 334–350, 884–897 and 1090–1094.

The coordinator computes phase elapsed values by subtracting its own started from time.monotonic() values sent by a separate Python interpreter. It also compares its own clock against ready_at + 20 built from the wrapper clock. On the required macOS Python 3.9.6 runtime these values do not share an origin. CPython 3.9.6's Apple implementation stores a process-local t0 and subtracts it; Python documents system-wide macOS monotonic behavior as a change in 3.10. Sources: CPython 3.9.6 implementation, Python 3.10 time.monotonic change note.

This is visible in supplied evidence, not just a platform conjecture: the blocked-sink record above has prepublication_elapsed=-0.003147333 and ready_elapsed=-0.003141208, although the child was launched after coordinator setup. The real pair's phase elapsed values similarly include an unknown inter-interpreter offset, and the coordinator's hold deadline is shifted by that offset. Scheduling/startup delay can therefore produce an incorrect hold-expiry decision. Separately, the after-case ready timestamp is sampled before original_journal, not at the actual post-publication hook, so it also excludes publication duration.

The producer-local subtraction proving the twelve-second hold is valid and should be retained; do not regress to subtracting two delayed coordinator receipt times. Minimal direction: use a clock relation that is actually valid on the supported native runtime, or keep producer durations and coordinator observations explicitly separate while preserving the accepted bounds. Record after-readiness at the actual after hook. No Python upgrade, extra dependency or relaxed deadline is authorized by this finding.

Resolution of the nine previous findings

The prior raw preflight is receiver-48004-preflight-raw.md, SHA-256 0b0aa4a805dbdf5c5d2b88375dccd9c222fa4ff896d43a6ca8b17c21646f43bb. Its findings are accounted for individually:

Prior finding	Current source/evidence assessment
F1, expected nonzero plus errexit	Resolved in the changed shell call structure. run_managed_receiver and its callers capture status through explicit if branches without toggling the caller's errexit setting. The focused log proceeds through negative controls.
F2, late cancellation lost	Partially resolved. Ordinary setup/ready/cleanup/retirement transitions consume cancellation, Bash preserves pending outcome, and the actual shell completion-race control is present. R1 remains during diagnostic publication.
F3, EXIT/wait/retention	The earlier concrete defects are repaired: shared real shell runner has ERR/EXIT cancellation plus same-job wait, does not use kill-zero to decide completed wait, records shell outcomes, and the suite aggregates unresolved retention. No new signal authority is obtained from shell PID liveness. Runtime completion remains subject to pending full proof and the findings above.
F4, fake Bash matrix	Resolved in source and focused execution: twelve Bash-target cases now exec the real /bin/bash runner through the signal-state launcher and signal that shell; twelve coordinator cases remain distinct. The named 24 rows are present. This does not resolve R1's later emission window.
F5, admission ordering/identity	The described defects are repaired: valid token/case start permission and cancellation are checked before Popen, the one-byte release is guarded by masked handler/OS-pending checks, attempted release preserves conservative group ownership, and invalid start/cancel plus identity-refusal controls exist. The actual gated child is stopped by exact positive PID without product entry for identity refusals.
F6, fake signal/wait/probe faults	The listed faults now occur at their signal/wait/probe boundaries. Raw ECHILD and exhausted-wait records keep decoded/raw status unknown and reaped=false, with authentic rescue status stored separately. Signal-error records authentic exit 42 and finite fixture lifetime. EINTR is explicitly injected handling proof, not a claim of kernel interruption. This improvement does not validate the separate fabricated drain proof in R3.
F7, diagnostic implementation absent	Substantially implemented: bounded nonblocking sink writes, separate error facts, bounded excerpts, EOF fields, flag restoration, completion write/rename failures and retained scratch are present. It is not fully resolved because R1/R2 leave cancellation and real blocked-write proof incomplete.
F8, delay measured from receipt scheduling	Producer-local timestamps/duration and per-record phase processing repair the original receipt-difference/batched-record bug. Both focused real cases record holds above twelve seconds. R4 prevents acceptance of the new cross-process elapsed/deadline arithmetic.
F9, missing expanded proof	Most missing controls are now concrete: natural exit 37 with nested stream writer and zero-output rejection; real 60-second watchdog with descendant; exact and overflow stream/control bounds; real Bash signals/repetition/race/error; cancellation-write failure; three coordinator exception states; inherited state; publication/restoration failures; retention. R2/R3 remain material substitutions, and complete final native/Linux proof is still pending.

Preservation, ownership and evidence checked

Read-only byte comparison confirms all thirteen original outer pass statements remain in their original order; there are now seventeen outer statements. The complete original checkpoint-helper/matrix suffix is byte-identical after accounting for the final suite_complete=1 insertion. The original before/after missing/stored recovery and candidate-preservation block is byte-identical after excluding the new inventory append. This preserves the original 654-case source and oracle bodies, rather than merely its count. It is not a claim that the pending full native run completed.

The direct ownership foundation remains coherent on source inspection: a strongly referenced direct child, gated launch, positive PID=PGID=SID validation, no Popen convenience poll/reap before retirement, at most one raw final signal per authority path, finally retirement, authentic exact wait decoding and ESRCH-only read-only absence checks. The ordinary exception path respects already-retired authority. I found no additional credential, installation, target, workflow or product-code scope expansion. The private route manifest records replay/materializer/core/jq/closure source identities and selected generation; it is evidence for the fixed route, not proof that arbitrary programs cannot escape a process group.

I read the complete focused log, SHA-256 50d02cee66a72e8c8149d9a7aee527b0b09e6ae5feaee37243198c92cf792189. It reaches the fifteen early outer results including the real watchdog, then retains scratch; it does not include the original 654-case suffix. The manager reports its actual exit zero. The focused evidence root is /private/var/folders/rm/bkx4f4b91vqfn79vk02pcd140000gn/T/ystack-replay-result.u9blMl. I read its full new named inventory, real before/after completion records, route/tool manifests and the raw fault records relevant to the findings. I do not claim every retained file or a complete CI archive was read.

The generated bytes in that focused root exactly match the current source heredocs:

• Coordinator SHA-256 fdbf54b3486a23d53c968f85a2944da1941550a05af549bce03798c89edf4a15.
• Shell runner SHA-256 cccde9f44975044974c0a245a2ded620d054044062e23f5b11b5b92238cc138a.
• Control wrapper SHA-256 3077e12af4b5be4ee95294a364555469f9bb6dcbc032163dad48f3008ac02cae.
• Loaded wrapper SHA-256 267be096d30370c3b4ee6bae26b2ce386875ad1ca6f795d6f1ba6cbfe621081c.

The raw focused real pair records authentic -9, one group signal, reap, group absence, both EOFs and zero outward stdout. Producer hold durations are 12.0165765 seconds before and 12.026465375 seconds after. Those successful observations do not excuse the incorrect cross-process clock relation or prove the unexercised failure branches.

Validation limits and disposition

The manager-owned complete native run is separate, with retained root ending ystack-replay-result.Yib2We. Its provenance JSON binds the reviewed head/base/source and command /bin/bash scripts/test/replay-materialization-result.test.sh. At this review's evidence check its durable .exit file was absent, so no complete native pass is asserted. The supplied tool provenance records Bash 3.2.57, Python 3.9.6, Apple Git 2.54.0 and pinned jq 1.6; its SHA-256 is 1cd672e008a6a56695356c73a2dda6f7a988c4cff7928f5246bb7ac66bd06070.

The manager reports quick CI 35679336601 green and full Linux run 35679365751 still running. I have not independently accepted a completed full matrix or its archive, static-check transcripts, branch protection or a final publication tuple. No test execution was repeated by this reviewer. The manager explicitly requested this complete blocking verdict now so the same author can fix concrete defects while all current run outcomes and failures remain preserved.

All four Important findings block acceptance independently of eventual green runs. Return the same preserved PR to its original author under the normal next-round claim. Keep the accepted design, original proof, one file, finite budgets and one-shot ownership boundaries. Do not erase the historical failures, weaken controls or treat this report as permission to merge. A revised head needs fresh affected proof and independent exact-head/base review; quick green CI cannot replace it.

VERDICT: REVISE

[yihanzhu]

Receiver fix claim

Claim: codex-receiver-fix-r1-70d90dfa-abe2-481c-bd41-d3098aa13d93
Manager: Codex session 01a09ae7-9bd4-77f3-8c15-966143bebff4
Repository: yihanzhu/ystack
Parent intake: #347, ready/claimed/needs-human absent
Mode: fix; gate_mode: artifact-high; risk: high; branch_state: existing
Branch: ystack/impl/receiver-crash-supervision
PR: #395 OPEN, round-1, claimed; needs-human and merge-ready absent
Local and remote head: 539d20d
Current base: 519982c
Worktree: clean
Intent: ae56dfd965dd4fb2a5b2cf726769954d2a5052cc
Spec: ba8d7bf7fdaffca1ab8341f103028c0aa4cec016
Plan: 913b93e3af58f202c3659d7f91104815c407dc25

The manager read and posted the complete independent round-0 REVISE, raw SHA-256 3cfe5306212fa266f48e569c8aa0fe34e3da9f9747d1fcdc523556da72af3101. Return all four Important findings to the original Sol/medium author on the same attempt and only allowed test path. No accepted artifact, scope, runtime version or safety requirement changes. Actual runtime model identity is not exposed.

The manager-owned native run of this frozen head is still active. Keep its working source unchanged until that run saves its actual exit. The author may prepare the bounded correction as a retained local patch meanwhile; only the manager may authorize applying that patch after the running source is released. Preserve all run outcomes. The superseded full Linux run was asked to cancel because this head requires changes; cancelled proof is never a pass. Fresh required CI, affected proof and independent review must cover the revised head before merge.

[yihanzhu]

Native evidence for the reviewed round-0 head

Head 539d20dcd30140e5ab78409062c8e2267d7c2704, base 519982cf2968a472b3672cf3be8006a971460744, source SHA-256 55800b1fa7b28a47bbd6f640b78cb6fee5e244ae0d1ae914b2a9adb63cfd6d1b.

The manager-owned complete native invocation /bin/bash scripts/test/replay-materialization-result.test.sh returned actual exit 0. It ran from 2026-09-22T02:23:16.576688Z to 2026-09-22T02:38:56.629131Z, 940.047 seconds. All 17 outer checks and the original 654-case matrix passed. Full retained log SHA-256: 905060e42fe3044431f265abbbd4f5f059fa332ad2dc8e18c794da726fea432b. Native tools: Bash 3.2.57, Python 3.9.6, Apple Git 2.54.0, pinned jq 1.6. Source bytes and clean head were rechecked after completion; all retained records remain available locally.

This does not resolve the four Important findings in the complete round-0 review. They include proof defects that can return green, so the original author is fixing them under the round-1 claim. The source freeze used during this run is released. Valid unchanged regression evidence may be reused, while affected evidence and exact-head/base review must cover the revision.

Automatic quick CI run 35679336601 passed. Full Linux run 35679365751 was cancelled after the blocking review to avoid spending more time on a head that requires revision; its six shards are cancelled and aggregate ci failed. It is not full Linux passing proof. Complete cancelled logs are retained with SHA-256 666c8dc3d92d896815e47ef0207b316773b88954ec7541328def486f43204863. Required full Linux proof remains due for the revised implementation.

[yihanzhu]

The current Roadmap manager read this complete independent round-1 review. Requested reviewer gpt-6-astra/xhigh; actual serving identity unexposed. This REVISE preserves the reviewed historical tuple and authentic native/Linux evidence; no current-main or full-matrix acceptance is claimed. The one in-scope evidence-publication finding returns to the same implementation author and PR. The two upstream integration failures are tracked separately in #397.

PR 395 — independent round-1 review

Status: code preflight clear; final acceptance is pending complete exact-head proof.
This is not a PASS or permission to merge.

Reviewer: /root/receiver_r1_review_recovery, independently dispatched by sole
manager Codex session 01a09ae7-9bd4-77f3-8c15-966143bebff4. Requested routing is
gpt-6-astra / xhigh. The runtime does not expose an attested model/effort
identity; I do not infer it from the task name or requested configuration. The
implementation author is a separate Sol / medium agent. This replaces the
interrupted, not-started round-1 reviewer and does not consume a new revision round.

Exact tuple and provenance

• Repository: yihanzhu/ystack; PR: test: supervise receiver crash children through cleanup #395.
• Branch: ystack/impl/receiver-crash-supervision.
• Head: c956c3ee0dd0923004a05367414f752374dd4d7b.
• Base: 519982cf2968a472b3672cf3be8006a971460744.
• Round-0 parent: 539d20dcd30140e5ab78409062c8e2267d7c2704.
• Worktree: /private/tmp/ystack-codex-resume-20260921/wt-receiver-impl; clean on
  first inspection and after the source review.
• Sole changed path: scripts/test/replay-materialization-result.test.sh.
• Source SHA-256: 151246d791436cf2d856aec8de0c973f8dad7523530cc2e60a3f21b2eab6d051.
• Base-to-head size: 1,680 additions and 20 deletions, 1,700 added plus removed
  lines, within the accepted 1,450–2,100 forecast.
• Intent blob: ae56dfd965dd4fb2a5b2cf726769954d2a5052cc.
• Spec blob: ba8d7bf7fdaffca1ab8341f103028c0aa4cec016.
• Plan blob: 913b93e3af58f202c3659d7f91104815c407dc25.

The accepted artifact blobs match at base and head. The revision is one linear
commit above the round-0 parent and changes only the allowed test path. Earlier
commits and the base merge remain preserved.

I read AGENTS.md, REVIEW.md, the Roadmap program authorization including its
September 21 direct handback, the minimal-CI decision, and the complete accepted
receiver intent/spec/plan. The parent is the named manager. These records do not
confer manager or publishing authority on this reviewer.

I read the complete recovered round-0 review and verified its SHA-256:
3cfe5306212fa266f48e569c8aa0fe34e3da9f9747d1fcdc523556da72af3101.
It remains a REVISE of the earlier head. I do not promote its historical focused
run, or the manager's summary of the lost round-1 72-control run, into current raw
proof. The prior local raw run artifacts were lost during the temporary-directory
loss; that limitation must remain explicit.

A fresh read-only GitHub API query independently returned OPEN, the exact head
and base above, and only round-1. merge-ready, claimed and needs-human were
absent on the PR. I did not mutate or revalidate the full historical claim chain.
The automatic run 35680800948 has successful checks and ci, with its test
job skipped. It supplies quick CI only.

Bugs pass and the four earlier Important findings

No new Important code defect was found in this pass. The complete current test
source, the revision diff, removed base code and changed call sites were inspected.
Each former finding has a concrete source-level repair; execution acceptance
remains pending.

1. R1, cancellation during diagnostic/completion publication: the coordinator
   now consumes cancellation after each capture publication, between bounded
   diagnostic chunks and after emission. During final publication it masks
   INT/TERM, checks both deferred handler state and OS-pending signals, consumes
   cancellation before and after writing completion, and rewrites completion if
   that final observation changes the primary outcome. The diagnostic is marked
   unsealed; completion is the final handoff record. A new acknowledged real
   coordinator publication-window TERM case asserts a formerly clean diagnostic
   and a cancelled final record. The final post-write cancellation observation is
   a bounded handoff point, not a claim of atomic order with independent later
   signals or files. No process signal authority is reacquired.

2. R2, fake blocked sink and reader-connect race: the diagnostic reader now
   opens the FIFO and acknowledges connection before the coordinator opens its
   writer. The blocked fixture keeps that real reader open without draining.
   The coordinator fills the connected FIFO until the actual nonblocking write
   reports BlockingIOError; the ordinary emission loop then runs to its original
   five-second deadline. Assertions require connected state, positive prefill,
   repeated blocked writes, expiry and restored flags. The shell stops and waits
   for the reader after coordinator completion, including its EXIT cleanup path.
   Broken-sink and flag-restoration cases remain distinct. No ENXIO result is
   accepted as blocked-output proof.

3. R3, fabricated EOF failure: the forced EOF reassignment is gone. The fixture
   now supplies pending behavior at the stdout read boundary during cleanup. The
   real capture loop reaches the original cleanup deadline without a stdout EOF;
   assertions require a reached pending-read boundary, elapsed deadline,
   incomplete capture, group absence, and exactly the capture-incomplete cleanup
   error. This is explicitly injected pending-read handling, not a claim that a
   kernel pipe remained open. It falls within the prior review's accepted repair
   direction. Group absence is observed before draining this deliberate expiry
   fixture, without renewing the shared deadline or granting cleanup from rescue.

4. R4, process-local macOS monotonic origins and early after-hook timestamp:
   cross-process timestamps and coordinator deadlines now use
   time.clock_gettime(time.CLOCK_MONOTONIC) in both interpreters. Producer-local
   time.monotonic() subtraction still measures the twelve-second hold; it is no
   longer subtracted from another process's origin. The after-ready timestamp is
   sampled after original_journal returns. Real-pair assertions require ordered
   nonnegative phase times within sixty seconds, measured producer hold, and the
   correct pending/completed publication state. CPython 3.9.6's
   clock_gettime implementation
   returns the OS clock directly; Apple's
   CLOCK_MONOTONIC implementation
   uses a system boot relation rather than CPython's old interpreter-local origin.
   Native execution is still required to accept the actual selected runtime.

The retained ownership design remains coherent: direct gated Popen child;
positive PID=PGID=SID validation; no convenience poll/reap before retirement;
conservative group ownership after any attempted admission; at most one raw final
signal; retirement in finally; exact wait-status decoding; and ESRCH-only absence
confirmation. The cleanup fault controls retain unknown wait facts and record
rescue separately. Exceptions after retirement cannot reacquire signal authority.

Security pass

No credential, external target, installation, activation, dependency, workflow,
product-code or policy change was introduced. Invocation files live beneath fresh
private directories and bind token plus case. Candidate data is not executed.

I traced the actual process-launch calls through replay's fixed materializer and
jq invocations, materializer shell exec/pipeline paths, object-closure's fork and
fixed Git exec, and core generation selection/ingress. The fixed route retains
the inherited process group; no new session/group, job-control, disown or daemon
escape was found. Source/tool manifests are evidence for this fixed route, not
arbitrary-program containment. The selected generation is derived from the
existing core selection. There is no new generation pin.

Compliance and original-proof preservation

All budgets and capture/control limits remain as accepted. The change stays within
one test-harness concern and one allowed file. The accepted high-risk artifacts
are unchanged. No test, CI gate, round cap, read-only-reviewer boundary, original
oracle or scope restriction was relaxed.

Read-only byte comparison establishes that all thirteen original outer pass
statements remain in order among seventeen current statements. The entire original
checkpoint helper, 654-case matrix and final corrupt-result assertion suffix is
byte-identical after removing only the new final suite_complete=1 line. The
original suffix SHA-256 is
dacf87fbaf50fa6432573cde15ee45a008a4eecedcce6481fbfa883c34a776fd.
The original early pair's missing-before/stored-after recovery and candidate
preservation oracle bodies also remain unchanged; the launch, readiness, authentic
termination and capture proof around them is stronger. These comparisons prove
source preservation, not completion of a run.

One description correction remains for the manager before acceptance: the PR body
still reports the round-0 1,572/20 accounting and says the fixes are assigned. Update
it to the current 1,680/20 diff and the eventual exact-head proof. This is a stale
description nit, not a code defect; do not change artifacts for round accounting.

Validation limit and current disposition

I ran no tests or candidate-generated helpers, and performed no signal, cleanup,
push, label or comment action. Deterministic hashes, source comparisons, Git
reads and the read-only PR API query were used. This scratch report is my only
written file.

The manager may proceed with the already-required final-head native receiver run
and dispatched six-shard Linux matrix. A final PASS requires reading their complete
raw proof, actual exits and exact provenance; all original 654 cases plus new
controls; phase/ownership/capture/retention records; source/helper/tool identities;
and relevant static checks. The automatic quick run and lost focused-run summary
cannot substitute for that evidence. Fresh final head/base verification and the
manager's protected publication checks remain due.

There is no final verdict in this preflight report. Code is clear for the required
proof runs; merge acceptance remains pending.

Native proof addendum — 2026-09-22

The completed native proof supports the current code findings. No new Important
code defect or native-evidence contradiction was found. The original preflight
above is preserved; this addendum records the later evidence. There is still no
final PASS because the required Linux matrix has a failed shard.

The manager supplied the actual completed tool-session outcome and durable
receiver-c956c3-full-native.{json,log,exit}. I read those files and verified the
log SHA-256 2aab4fbd29d564c8a487f6fc1ff345fb5c3252ef4ea9ab4ecb923855bdabac2f.
The provenance records /bin/bash scripts/test/replay-materialization-result.test.sh
at the same exact head/base/source tuple as above, actual exit 0, UTC start
2026-09-22T03:10:05.423129+00:00, UTC finish
2026-09-22T03:25:18.436517+00:00, and duration 912.983040875 seconds. The separate
exit file contains 0. The record's final HEAD and clean state agree with my fresh
Git check. The source still has SHA-256
151246d791436cf2d856aec8de0c973f8dad7523530cc2e60a3f21b2eab6d051.

The retained evidence root is:
/Users/yihanzhu/git/ystack/.claude/worktrees/roadmap-recovery-20260922/native-tmp/ystack-replay-result.RolYpo.

I read the complete 72-row control inventory, each control's completion or
intentional publication-failure evidence, shell outcomes and retained markers.
I inspected the full raw records for the real pair, publication-window cancellation,
connected blocked sink, drain expiry and watchdog. Reviewer-controlled read-only
parsing covered all 987 lines and every structured payload in the 2,739,911-byte
native log; I did not substitute a supplied summary for those raw files. The
large repeated snapshots were compared directly, without printing all duplicate
bytes into the review transcript. The complete 654 ordered named PASS rows exactly
match the retained original-matrix inventory. There are seventeen outer outcomes,
the final 17-check success line, and the expected retained-root line. The only
shell error outside structured records is the deliberately created cancellation
write failure, whose .next path is a directory.

The raw payload checks cover all 146 before/after preservation records, 93
unchanged invocation/reconciliation counters, 23 original response/receipt records,
13 pause records, 13 authentic process outcomes, six exact journal-resume deltas,
five publication-fault records and the after-effect overflow record. Preserved
snapshots match, the journal changes only by its allowed phase/verification delta,
and original response/receipt hashes remain consistent. The unchanged later
SIGKILL cases retain -9 and empty stdout; publication faults retain exit 1; the
broken-reply case retains its real exit 120; keyed INT/TERM retain exit 75 and
the same original response bytes. These are observed expected negative controls,
not failures hidden by the final zero.

Concrete repaired-path observations

• Real before: ready elapsed 20.284037 seconds, producer hold 12.000698084
  seconds, publication state pending, raw status 9 / decoded -9, one group
  signal, authentic reap, group absence, both EOFs and zero stdout/stderr.
• Real after: ready elapsed 20.271073 seconds, producer hold
  12.009998500000002 seconds, publication state completed, raw status 9 /
  decoded -9, one group signal, authentic reap, group absence, both EOFs and
  zero stdout/stderr. Both ready timestamps are positive and within setup.
• Cancellation during publication: the unsealed diagnostic has no primary
  failure. Final completion contains cancelled at diagnostic-publication,
  pending TERM 15, sealed outcome, one signal and complete cleanup/capture.
  The shell records actual coordinator exit 1 and completed wait.
• Connected blocked sink: 8,192 prefill bytes and 353 blocked-write observations,
  real connection, TimeoutError: diagnostic write deadline expired, elapsed
  5.022231999999917 seconds, restored flags, coordinator exit 1 and retained
  marker. The diagnostic reader completed with status 0.
• Drain expiry: 713 pending-read boundary observations, elapsed
  10.026276999999936 seconds, stdout EOF false, capture incomplete, authentic
  -9/reap and group absence. The sole cleanup error is stream capture incomplete;
  exit 1 and retained marker are present. It remains an injected read-boundary
  pending control, not a claim of kernel-level held-writer behavior.
• Watchdog: elapsed 60.00834900000007 seconds, setup deadline expired, one
  signal, authentic -9/reap, group absence and both EOFs. Its nested child's
  recorded PPID/PGID/SID belong to the direct leader's group.

All 72 shell result records confirm completed wait and diagnostic-reader status 0.
All 70 published completion records bind their matching shell token/case; the two
intentional completion-publication failures retain diagnostic evidence, actual
exit 1 and scratch instead. Raw wait decoding agrees with the recorded decoded
status wherever status is known. ECHILD/exhausted-wait facts remain unknown with
reaped=false; their separately recorded rescue -9 never becomes supervisor reap
credit. The admitted cancellation cases retain a single signal, authentic reap,
absence and EOF; prelaunch cases retain no child and zero signals. Capture files
match recorded retained byte counts and excerpts. All incomplete cleanup,
capture, diagnostic and cancellation-write cases have their retention markers.
All emitted diagnostic JSON files are within 16 KiB and decoded excerpts within
4 KiB per stream. The two empty diagnostic-reader outputs are the intended
capture-publication and blocked-sink failures.

I compared all generated helper bytes directly against the corresponding source
heredocs, including the unchanged checkpoint helper. They match exactly:

Generated file	SHA-256
loaded-driver-wrapper.py	59334e041b44bac8900ffc716c83cf58b4c66be0398a4f52bf59ad281a44b466
receiver-supervisor.py	a42b8d74a96a99282e1a56e87ee645fe2ff38be0903c2d6bfc8eecafe1fe89cf
receiver-inherit-launcher.py	a64705e1a20f3d9538a7982ae4f7a41f7561464e8a2e7d1e938d15f3fb39e9bc
receiver-diagnostic-reader.py	058feb9f5c87805a2285eb4d7a0508dfb2c501aedd79da436544dd86d5079605
receiver-shell-runner.sh	f4fa1affeea33dc46b7b0d1e7efe9dbd653cc361f6a890ad3e0a0f405e1e46d7
receiver-control-wrapper.py	b191a656f54bf77914317f6e17483d0aaac414bfe115af88138bb0551f48d297
checkpoint1-cases.py	8095939c8ec167d2dbb6435f8e6272f062aaa213f2ed467f60a207aa67fadd5f

The route manifest's thirteen source hashes/modes match the reviewed worktree;
both recorded private executable hashes/modes match retained binaries. The tool
manifest records native Bash 3.2.57, Python 3.9.6, Apple Git 2.54.0 and pinned jq
1.6. Manifest hashes are:

• Original 654-case inventory:
  885c7181d22d6063ebe1cb0ce5a56e915d63636d3136235c91c25efb7ecf066c.
• New 72-control inventory:
  b5f586dc916c72056e077a90de71dbbc83a8a62fe8854881294eb7299b0fd5c9.
• Tool manifest:
  d196299374ba4d1efd69cffcf6d5ec5f5975e09c6d81024ff32e56bfd1189c08.
• Route manifest:
  3f27b4159d6776c440d3000f409411a2a9748496f0f37ccd7a48ba32f64fc756.

The six directly inspected final records above have SHA-256s, in the same order:
70c29ada7be1c904d5f462e37b80f8721d4a74703d47570b473f80754b10430f,
5bbd5afadd55a32a34e3075934ba60c17c020f7fb68885d245e4e4f3755ec825,
fa6498262192b98111fc82a7e4c27a4b4e162b8d220be4583ad350fef6054807,
0b22511b3a09d0f5f2c9c9dab2e1b9df017654af260790cb57900a03f46d8741,
437ddc238335669f9701e37cd25e0c8671228b4fb24d7efa1b3e08a790eb85dc,
ca1a922bfc293a116bc16ea70582554453accbb8a7338e2f06a211547065c698.

Remaining gate and description state

I read the supplied empty local ShellCheck log, separate exit 0 and the subsequently
supplied receiver-c956c3-shellcheck-provenance.json. It records the actual
/opt/homebrew/bin/shellcheck -x -S style scripts/test/replay-materialization-result.test.sh
command and cwd, resolved Cellar binary, and version 0.11.0. My read-only hash of
that binary matches f626614fd15e82b67c6566fd4f4d9eab796fa5dcff74ad90d702e5b96c01eba8.
The provenance request is resolved. The manager also reports the fresh
deterministic diff check passed.

I read the complete 22,104-byte raw Linux checks-job log for job 106601260535
from the same full workflow and verified SHA-256
2fdddcc574a9f3f95f390cd3c879bb70bd9418bc5ad91dd682a69783a14a383d.
Its checkout resolves the exact c956c3ee... head. It shows structure success,
verified official ShellCheck 0.11.0 archive hash/version followed by the full shell
lint sweep, 202 successful sharding assertions, clean rename check, complete schema
and pending-stage guards, and successful minimal-CI proof. This supplies the
applicable structure, rename, lint and content-guard raw evidence without another
local run. It does not supply the missing successful full Linux matrix.

I independently verified the supplied Linux shard-1 raw log SHA-256
6da91ddb9d8c7ed76f2f84740547b9e4739c32ccf5fc55307198ae64550dcbcb and read its
failure region: scripts/test/target-packaging.test.sh ends with E_RELATION and
actual exit 1 in run 35682173537. The manager reports separate diagnosis of the
materializer package-pin mismatch. This addendum does not claim to independently
accept that separate repair. The failed run stays failed; passing other shards or
native receiver proof cannot replace the accepted all-shard Linux gate.

A fresh PR read still gives OPEN, exact c956c3ee... / 519982cf..., only round-1
and no merge-ready label. The manager corrected the description's size and current
review status, so the preflight description nit is resolved. Its eventual final
validation text still needs the final native/Linux disposition.

Native proof and the inspected static checks are accepted as evidence for this
exact reviewed tuple. Merge acceptance remains pending the Linux repair/full
matrix and final publication checks. If main moves, this review does not silently transfer to the new base:
the preserved branch, artifact/source tuple and applicable proof require fresh
independent review. No final PASS is issued here.

Supplementary upstream failure diagnosis for the manager

This is read-only diagnosis of an existing full-matrix failure. It is not a
request to expand PR #395, acceptance of a repair plan, or repair implementation.

I downloaded the complete raw log of Linux shard 5, job 106601260615, from
workflow run 35682173537. The retained file
receiver-r1-linux-shard5-raw.log has 1,363,453 bytes and 5,402 lines; SHA-256 is
21f6be952e3f7514c76acd41c648d3a33f903b9e6021a41dd974e2de0dd53797.
The first actionable failure is line 5368, at 2026-09-22T03:40:19.1394998Z:
FAIL: span-bytes-271-332. Line 5369 records actual process exit 1. The relevant
script is scripts/test/shadow-assembler.test.sh, introduced in this log at
line 5300. Immediately before the failure, assertion 67 says the eight profile
pins are live against the working tree. This failure is not a reported
E_RELATION or failed profile-pin assertion.

The failing check at test lines 518–535 extracts the assembler's tagged
materialize.sh:271-332 copy, verifies its length and starting anchor, then
compares its bytes against current materializer lines 271–332. The checked
assembler is shadow/v1/assemble-materialization-input.sh; the source is
adapters/local-git-materializer/v1/materialize.sh.

Upstream commit fc1fc01ff9963f5b8ccab5b26d4d572b9c1a0203 (PR #392,
“Keep materializer index state in private scratch”) added the seven-line
git_index helper at current materializer lines 277–283. This shifted the source
ranges used by three existing copied spans. I compared each full copied span
against both the pre-392 source and current source. All three still match the
pre-392 source exactly. Their unchanged substantive bytes also match the current
source exactly when the newly inserted, assembler-unused helper is excluded.

A minimal nonsemantic copy-provenance reconciliation can preserve the assembler's
current executable bytes by replacing the first tagged range with two ranges,
then shifting the two subsequent markers and corresponding exact checks:

Old tagged range	Current source range containing the same bytes
271–332	271–276 followed by 284–339
333–347	340–354
348–360	355–367

That changes the assembler's copy markers and
scripts/test/shadow-assembler.test.sh's matching check_span declarations. It
need not copy an unused index helper into the assembler or alter the materializer,
core, or safety checks. Any byte-pinned consumers must still be checked by the
separate repair author/reviewer; I have not asserted that there are none.

These two paths were outside issue #397's then-stated eight-path package-binding
scope. The manager subsequently selected a G1 scope amendment before G2 to include
them in that separate upstream dependency repair. This diagnostic supplies raw
cause evidence only and does not itself authorize or accept that amendment.
No candidate code or test was run or changed during this diagnosis.

Complete Linux component review and final round-1 disposition

This section supersedes the preliminary pending status above. It preserves the
original preflight/native review and its exact evidence; it does not turn a failed
workflow or missing raw records into a pass.

Independently retrieved receiver shard

I downloaded the complete raw log directly from GitHub's job-log API and read its
job metadata, rather than accepting the manager's summary. Job 106601260738,
test (2) in run 35682173537, reports completed / success at exact head
c956c3ee0dd0923004a05367414f752374dd4d7b. Job UTC bounds are
2026-09-22T03:10:28Z through 2026-09-22T03:32:21Z; its test-suite step ended
at 03:32:19Z.

• Job URL: https://github.com/yihanzhu/ystack/actions/runs/35682173537/job/106601260738.
• receiver-r1-linux-shard2-raw.log: 2,803,331 bytes, 1,451 lines, SHA-256
  81991158cc1c93d29d564f7b02b5bc61e7a054a1274b868962c10be898793294.
• receiver-r1-linux-shard2-job.json: SHA-256
  9262127cac7bc5611a82af7fec9ebb97083a669f6f9a3f53d498e1cd02082868.

The receiver script starts at raw-log line 392,
2026-09-22T03:19:10.9948828Z. Its final assertion is line 1378 at
03:32:11.6257179Z, followed by “17 focused checks passed.” The whole shard then
reports all 11 scripts passed. These are job/script wall-clock bounds, not the
missing per-phase measurements described below.

I processed the entire 988-line receiver segment. Its 654 named checkpoint PASS
rows match the complete original retained inventory in exact order; its 17 outer
assertions match the successful native run. I decoded all 300 original JSON
records and directly compared their evidence, including all nested snapshots and
embedded response/receipt data, using reviewer-controlled read-only parsing:

Original raw evidence group	Records	Directly inspected relation
cp4b-preservation	146	Every complete before/after snapshot is identical; recorded status distribution is 54 exit-0, 50 exit-3, 6 exit-2 and 36 exit-1
cp4b-original	23	Response payload equals the recorded receipt; SHA-256 matches its exact embedded receipt bytes
cp4c-counter	93	Before/after counter bytes match
cp4c-pause	13	Zero outward stdout at the recorded pause
cp4c-process	13	Reap and actual status agree with each named scenario
cp4c-resume	6	Exact journal bytes and snapshots change only by the accepted workflow transition; stored receiver bytes remain identical
cp4c-publication	5	Prior snapshot preserved, except the expected journal replacement after directory-fsync failure
cp4d-capture	1	Real response exit 0/6,737 bytes and injected 1,048,577 bytes exceeding the unchanged 1,048,576-byte limit

The original process records show the three crash cases at -9, five publication
faults and broken reply at 1, keyed INT/TERM at 75 with stored receipt, and malformed
capture/overflow at 1. The one Is a directory shell line is the intentional
cancellation-write failure. The other receiver lines are the 17 outer assertions,
13 Git initialization hints, retained-path announcement, final total and blank
separator. No unexamined receiver JSON payload was discarded merely because it
was long. I did not execute candidate tests or generated helpers.

Important R5 — Compliance: preserve the Linux receiver proof outside runner scratch

Source locations: scripts/test/replay-materialization-result.test.sh:662–677,
1501–1528, 1551–1565, and 2217–2245 in the reviewed head. The new tool/route
manifests, 72-control inventory, coordinator phase/ownership/capture records,
diagnostics and shell result files are written under the temporary suite root.
The test validates them but emits only aggregate ok lines. The EXIT cleanup
prints that the root was retained; this keeps files on the ephemeral runner but
does not retain their bytes in the downloadable CI evidence.

This is visible in the completed Linux run: none of ready_elapsed,
prepublication_elapsed, hold_seconds, diagnostic_blocked_writes, the new
72-control rows, or the receiver tool/route manifests occurs in the full raw job
log. Its only retained-root announcement is
/tmp/ystack-replay-result.onHpQQ. I independently queried the workflow artifacts
API: receiver-r1-linux-artifacts.json is exactly an empty artifacts result,
total_count: 0, SHA-256
244563f989470892c537c9a4622920af0d228ee4528f7d00c64a06d6cd95856c.
The unchanged workflow also has no upload step. No authentic retained Linux
record bundle was supplied or found. The successful aggregate assertions show
that checks executed, but do not expose their measured values for independent
raw-evidence review.

The accepted spec line 106 requires actual new phase times on Darwin and Linux;
plan line 165 repeats that requirement. Spec lines 166–170 and plan lines 267–271
require retained original/new inventories, phase/ownership/capture evidence,
source/tool identities and complete raw review. The complete native scratch
satisfies the native part and cannot stand in for Linux measurements. In
particular, the actual Linux before/after readiness/hold values, watchdog timing,
connected blocked-sink expiry and drain-expiry records cannot be reconstructed
from the grouped assertion timestamps.

Required resolution: have the implementation author make the bounded evidence
observable in retained CI output within the one allowed test file. Emit the
actual generated records and named inventory, tool/route identities and proof
hashes with explicit missing-record handling for deliberate publication failures.
Preserve the existing bounded diagnostic serialization, distinct diagnostic/final
completion outcomes, failure/retention facts, stream limits, budgets and all
original assertions. Do not add a workflow, infer successful records from counts,
or synthesize values from this review. A fresh complete run must retain authentic
Linux raw evidence after the revision. This is an evidence/publication defect in
the test, not a request for weaker acceptance or a new runtime mechanism.

Full matrix result and current base

I retrieved final run and job metadata directly. Workflow 35682173537 is
completed / failure, event workflow_dispatch, exact head c956c3ee...,
started 2026-09-22T03:10:22Z and updated 03:40:27Z.

Job	GitHub job ID	Final conclusion
checks	106601260535	success
test (1)	106601260757	failure
test (2)	106601260738	success
test (3)	106601260733	success
test (4)	106601260622	success
test (5)	106601260615	failure
test (6)	106601260848	success
ci	106606885284	failure

The retained receiver-r1-linux-run-final.json has SHA-256
13835c0fbe98b5d42d091b855dcb5ebd06b0565f4b33233a07f74856627febc2;
receiver-r1-linux-jobs-final.json has SHA-256
dc650632bb522d91993e6cd9920c04947fb773a554f118f86b574f8d0865a6c1.
Shard 1's package-binding failure and shard 5's copied-span failure are recorded
above as separate upstream repair work. The existing workflow enforces their
failure; this review neither asks PR #395 to absorb those paths nor excuses the
required successful full matrix. A green receiver component remains useful
partial evidence without becoming all-shard acceptance.

At the final check, the implementation worktree was still clean with the exact
reviewed source SHA-256 and HEAD. The PR API still returned OPEN,
c956c3ee0dd0923004a05367414f752374dd4d7b /
519982cf2968a472b3672cf3be8006a971460744, and only round-1; merge-ready was
absent. A separate direct main-ref read now returned
88d12803f73c5ca2b8e44f91874bd2ab208a7ea2. That base movement was reported
immediately to the manager. This verdict is bound to the reviewed old tuple and
cannot provide acceptance against the new main. Preserve the attempt and obtain
fresh review of its later exact head/base and evidence.

Bugs pass: the four earlier source findings are repaired; no further receiver
logic defect was found in the inspected source/native proof/Linux payloads.
Security pass: no new authority, product path, workflow, budget or containment
change was introduced. Compliance pass: R5 is Important and unresolved; required
all-shard Linux acceptance is also red, and current-main acceptance requires a
fresh exact-tuple review. There are no new nits. No simplification was identified
that could safely remove required evidence or controls.

VERDICT: REVISE

[yihanzhu]

Fix claim for the preserved receiver attempt.

Manager: 01a09ae7-9bd4-77f3-8c15-966143bebff4.
claim_id: codex-receiver-fix-r2-ce5dbd20-7ac5-42fa-a342-7b6819f1e149
mode: fix
gate_mode: artifact-high
risk: high
branch_state: plan-refresh
Repository: yihanzhu/ystack
Branch: ystack/impl/receiver-crash-supervision
PR: 395 OPEN
local_head=remote_head: ee5dfae
current_base: b038742
round: 2
worktree: clean
intent_blob: ae56dfd965dd4fb2a5b2cf726769954d2a5052cc
spec_blob: ba8d7bf7fdaffca1ab8341f103028c0aa4cec016
plan_blob: 913b93e3af58f202c3659d7f91104815c407dc25
review_size: accepted-exception, 1450–2100 added plus removed lines.

The full independent round-1 REVISE (comment5770957471, rawSHA b5bc18845fab0da91533f19cfc264b2d680b913f71e870c32c15ae5de8782463) was read completely. R5 is the sole new in-scope fix: retain actual generated Linux phase/control/inventory/tool evidence in bounded CI output. Only scripts/test/replay-materialization-result.test.sh may change. Preserve all budgets, controls, protocol distinctions and original assertions; no workflow or product change. The two upstream integration failures remain separate issue397 work.

A normal main merge has parents c956c3e then b038742. The test source is byte-identical to the reviewed native/Linux source; artifact links and accepted risk remain unchanged. Prior review/CI are not current-head acceptance. Return to the same Sol/medium author; keep complete raw proof and require fresh independent review and relevant CI before merge. Parent intake347 ready/claimed/needs-human absent; PR395 claimed and only round-2 verified.

[yihanzhu]

Round2 fix completed by the original Sol/medium author; manager checkpointed and normally pushed the same preserved branch. Head8b46ac4e7c8da46d2d77631e63db61619305d7d2/currentbase17565733df166fcf939bfee5d7dd50d2f986c395; worktreeclean; sourceSHA256eef85b6fbb9409cafc695d0ce4cb62313564aac0e4295da1312de4945c4f23d5. Only scripts/test/replay-materialization-result.test.sh changes, 1838 additions/20 removals within the accepted1450–2100 allowance. Sourcecheckpoint4bece6680073a45dfc3be9371b868b7c4b065636 follows prior head ee5dfae; subsequent merge parents are that checkpoint then exactcurrentmain17565733. Accepted artifacts unchanged; no history rewritten.

R5 repair adds bounded canonical output of actual control/inventory/phase/tool/source/capture evidence and explicit deliberate-publication-failure states. Existing cases, budgets and original assertions remain. Local emitter validation uses the authentic retained prior native suite root; it is affected emitter proof, not a new complete native or Linux run. All failed intermediate validations remain retained. No new full matrix was dispatched while known independent #397 failures persist.

Claim codex-receiver-fix-r2-ce5dbd20-7ac5-42fa-a342-7b6819f1e149 released by verified label DELETE after exact pushed result verification; PR retains only round2, merge-ready absent. Fresh independent exact-head/base review and required current evidence remain due; this is no PASS or merge acceptance.

[yihanzhu]

Independent round-2 code/evidence preflight, posted verbatim by the sole Roadmap manager after reading the complete raw review. This is not a final verdict or merge acceptance. Reviewer: /root/receiver_r1_review_recovery; requested gpt-6-astra / xhigh; actual runtime identity is not exposed. Author remains separate Sol / medium. Raw SHA-256: 3f0acd502ad1ef1017d8cb74449772f758325c09ad2ad1911d5cc3277f9d4e78.

PR 395 — independent round-2 preflight and evidence review

Status: code preflight clear. R5 has a concrete source repair and the affected
exported data checks out. Required final execution evidence remains pending.
This is not a final PASS, merge acceptance, or authorization to run anything.

Reviewer: /root/receiver_r1_review_recovery, separately dispatched by the named
sole manager session 01a09ae7-9bd4-77f3-8c15-966143bebff4. Requested routing is
gpt-6-astra / xhigh; no attested runtime model/effort identity is exposed.
The implementation author remains the separate original Sol / medium agent.
I made no repository edits, ran no candidate test or generated helper, and made
no forge write. Reviewer-controlled reads, comparisons and JSON decoding are
independent evidence inspection, not a new execution of the test.

Exact tuple and review basis

• Repository/PR: yihanzhu/ystack, test: supervise receiver crash children through cleanup #395.
• Branch: ystack/impl/receiver-crash-supervision.
• Head: 8b46ac4e7c8da46d2d77631e63db61619305d7d2.
• Base/current main: 17565733df166fcf939bfee5d7dd50d2f986c395.
• Worktree: /private/tmp/ystack-codex-resume-20260921/wt-receiver-impl, clean
  before and after inspection.
• Source SHA-256: eef85b6fbb9409cafc695d0ce4cb62313564aac0e4295da1312de4945c4f23d5.
• Only changed path: scripts/test/replay-materialization-result.test.sh.
• Base diff: 1,838 additions, 20 removals, 1,858 added plus removed lines within
  the accepted 1,450–2,100 forecast.
• Intent/spec/plan blobs: ae56dfd965dd4fb2a5b2cf726769954d2a5052cc,
  ba8d7bf7fdaffca1ab8341f103028c0aa4cec016,
  913b93e3af58f202c3659d7f91104815c407dc25.

The source checkpoint is 4bece6680073a45dfc3be9371b868b7c4b065636, whose
single parent is ee5dfae8a1875e4d21bd66738931fb8cbf4e616f. The reviewed head
is the normal merge with parents checkpoint first, exact base second. The prior
ee5dfae... head is a normal merge of the reviewed round-1 head and then-current
main. History is preserved. The implementation checkpoint touches only the
allowed test path. Artifact blobs remain exact, and read-only git diff --check
against the new base succeeds.

I retained the prior complete source/diff and Bugs/Security/Compliance review,
including all four original findings and the subsequent Linux evidence finding.
Its full raw file review-395-r1.md still has SHA-256
b5bc18845fab0da91533f19cfc264b2d680b913f71e870c32c15ae5de8782463.
AGENTS.md, REVIEW.md, the Roadmap authorization and minimal-CI decision, and all
three accepted receiver artifacts are unchanged from that complete reading.
Their authority and read-only reviewer boundaries still apply.

I inspected the current candidate, the complete round-2 diff and the changes in
its baseline. Deterministic full-file comparison finds exactly two insertions
and no edit or deletion of any previously reviewed source byte:

Old source range	Current range	SHA-256 of the identical full range
1–2242	1–2242	0852f0dcb81d87364be3723affef5559ba2ffe9ebe1955fd8814bb94a1cab72b
2243–4293	2377–4427	1750b229393b60ff202f740e647399954d31978e19d75588d46a10283b770adf
4294–4320	4452–4478	1a0a7acbe9326782992fe993c8dddf37a912f8a18f69b01f44693e156648c4ac

The additions are current lines 2243–2376 (134 lines) and 4428–4451 (24 lines).
This establishes coverage of the full candidate together with the earlier full
source review; it is not an assumption that unshown old code stayed unchanged.
The baseline moved only in the candidate-content-preparation spec/plan and the
materializer-package-rebinding intent. No executable, fixture, tool definition,
workflow, receiver artifact or review/authority rule changed in that base move.

Bugs pass

No new Important source finding. The R1–R4 repairs, original 13 assertions and
654-case matrix remain intact. Ownership, admission gating, one-shot group signal
retirement, authentic wait status, cancellation handoff, real connected blocked
sink, pending-read expiry, shared clock and all original budgets are byte-identical.

The new receiver exporter runs after the existing exact 72-name control-inventory
assertion. It reads the actual completion, diagnostic, shell-result and capture
files, rather than constructing successful process facts from the inventory.
It emits full parsed coordinator records, including actual phase/hold timings,
status, ownership, cancellation, diagnostic and capture facts. Diagnostic and
final completion remain separate, preserving the unsealed/then-cancelled
publication control. It also emits the ordered inventory, raw source/manifest
hashes, capture lengths/hashes and retention-marker states.

Invocation lookup distinguishes real-before/after, generic controls and explicit
shell/cancellation cases. Exactly one shell result is required. Ordinary cases
require exactly one regular completion. Only the two named deliberate completion
publication failures may omit it; their absent versus directory path state is
explicit. Empty and absent diagnostic/capture files are represented as such and
do not acquire synthetic success records.

The exporter caps manifest/record inputs and the encoded receiver output at 2 MiB.
Its 32-KiB archive-read ceiling for existing coordinator records does not alter
the supervisor's unchanged 16-KiB diagnostic/completion publication limit. Actual
capture generation remains limited to 64 KiB per stream. The separate original
inventory exporter requires exactly 654 PASS rows and caps output at 512 KiB.
Both write their output file before /bin/cat emits it; shell error handling
prevents a write/read failure from silently reaching a successful suite result.
The two final hash lines describe each emitted file's exact byte sequence.

These blocks only read completed process evidence and add suite output/files.
They cannot relaunch, re-signal, rewait, renew a deadline or alter earlier process
results. The Python APIs used are available in the existing Python 3.9 baseline;
no new dependency or tool is introduced. The existing current-head Linux execution
still must demonstrate the actual CI output path.

R5 is repaired at the source and affected-export level. It is not yet closed as
final Linux execution proof: no new authentic Linux record bundle exists at this
head. The exporter is reached after the control assertions; this preflight does
not promise a complete exported bundle for a run interrupted before that point.
An incomplete or failed future run remains incomplete/failed evidence.

Complete affected export evidence

I read receiver-r2/handoff.json, completion.md, the commit/tuple receipts,
both extracted emitters, both entire exported JSONL files and every retained
failed/successful emitter/validation log and exit file.

Both extracted emitter files are byte-identical to the current source heredocs:

File	SHA-256
receiver-emitter.py	edc03ed7814db89be9c0f3b8a5a212e756ad7574fce2fba42c7aa28f635b9f22
original-emitter.py	588755c0a2995a700e6b63e295126cd0643287be114a8309f88d7d17acbb3f43
receiver-r2.patch	2437ec99ea6753882809f8bbb540eae554ab1be3ceae4d75878e582ee2922c78

The receiver export is 355,700 bytes, SHA-256
5a3db339913daccbd18c5bab225f1e1d70b4e1d87f0825ea9a03344acb3bebe2.
I independently decoded all 534 rows and compared every applicable record/value,
byte count and SHA-256 directly against authentic retained native files under
native-tmp/ystack-replay-result.RolYpo. For each case I also compared tokens
between completion/diagnostic and shell records. Every comparison agrees:

Kind	Rows	Verified content
receiver-inventory	72	Exact original order, case, phase and result
route-manifest	15	13 source identities/modes and two executable identities/modes
tool-manifest	4	Exact earlier native Python, Bash, Git and jq manifest rows
source-hash	8	Current test source, six unchanged generated helpers, unchanged replay
completion	72	70 full actual records; two deliberate missing-publication states
shell-result	72	Actual case/token, status, completed wait, cancellation and reader facts
diagnostic	72	69 full actual records; two empty files and one absent sink record
capture	144	142 actual file lengths/hashes and two absent files
retention	72	16 true and 56 false markers exactly match retained scratch
proof-hash	3	Original receiver inventory and both manifest byte hashes

Every one of the thirteen route source hashes and modes also matches the current
reviewed worktree. The full generated helper and replay bytes remain unchanged.
The real-before and real-after records retain the already-reviewed native actual
hold/readiness measurements; the connected blocked-sink, drain-expiry, watchdog,
late-publication cancellation and authentic wait records retain their original
values. Serialization did not turn a failure, absence or unsealed observation
into success.

The original-case export is 87,633 bytes, SHA-256
cda19c8e97ca0b25a3137d4a97da83c74002c057152a3a207f503a5ddc08aed5.
All 654 case rows match the earlier native inventory exactly and in order;
the 655th row is the correct inventory byte count/hash. Neither exporter was
executed by this reviewer. These independent raw comparisons supplement, rather
than merely repeat, the author's final count summary.

The failed attempts remain present: initial receiver export failed on the
intentionally absent capture file; the next failed on the deliberate
completion-rename directory. The final emitter handles both states. Validation
attempts include a stray +import syntax error, attempts made before output
existed, and a query for a nonexistent capture_deadline_expired field. The
final successful summary is evidence-validation-pass2.log, SHA-256
a3e644fa87c7f429c3f7a01d342aaef33f2d6e60e98efcdcf79e6556490d79fa;
its separate exit file is 0. receiver-emitter-final.exit and
original-emitter.exit are also 0 with empty logs. No failed attempt is silently
promoted to passing proof.

Provenance and native reuse boundary

This affected check replayed retained files from the actual earlier native run;
it did not execute the new full receiver suite. The underlying native execution
remains head c956c3ee0dd0923004a05367414f752374dd4d7b, base 519982cf...,
source SHA-256 151246d7..., command
/bin/bash scripts/test/replay-materialization-result.test.sh, UTC
2026-09-22T03:10:05.423129+00:00 to 03:25:18.436517+00:00, actual exit 0.
Its complete raw log SHA-256 remains
2aab4fbd29d564c8a487f6fc1ff345fb5c3252ef4ea9ab4ecb923855bdabac2f.
The earlier independent full raw review accepted 17 outer checks, all 72 controls,
all 654 original cases and retained supporting records at that tuple.

The new export's source-hash row correctly hashes the new test source bytes.
It does not mean that those bytes produced the old process records. Likewise,
the exported Python 3.9.6/Bash 3.2/Git/jq manifest describes the earlier native
execution, not an attested runtime for this separate exporter invocation. The
failed local validator traces identify Homebrew Python 3.14. The successful
emitter handoff does not separately record its resolved interpreter, command or
UTC bounds; I do not invent those facts from the earlier tool manifest.
handoff.json also names the then-parent ee5dfae..., not the final reviewed
head; the later commit receipt supplies the correct source checkpoint/merge.

The prior native evidence can be reused for the unchanged process-owning code,
fixture logic, timings, recovery oracles and original matrix. The exact byte
comparisons and unchanged executable base justify that reuse. The new emitter
has direct affected-output evidence from those same retained bytes. There is no
new concern here that calls for repeating unrelated native suites or rerunning
the unchanged 72 process cases merely to inspect the exporter again.

That is compositional evidence, not a complete native invocation at 8b46ac4....
The accepted plan's literal final-head native-run requirement is not silently
waived or claimed fulfilled by a new source-hash row. Final acceptance must state
the exact reuse basis and resolve that requirement honestly; this code preflight
does not substitute a false new-run claim or authorize a lower proof standard.
Any later change to execution-bearing code, fixtures, tools or called sources
requires reconsidering the affected native proof.

Security and compliance passes; remaining evidence

Security: the new block reads the test's own private fixture paths and serializes
JSON. It does not execute log text, forge data, emitted file contents or tool
version strings. JSON serialization escapes values; no raw interpolation into
shell commands is introduced. No credentials, external target, network scope,
workflow, authority, product route or process-control capability is added.

Compliance: one test path, one concern, unchanged artifact chain/risk, accepted
size range, all original assertions and budgets retained. The R5 fix exposes the
raw data requested by the accepted proof contract. No source-level Important
finding or new nit was found. The bounded export implementation does not contain
clear removable redundancy that warrants another change.

A fresh read-only forge check returned OPEN, the exact reviewed head/base and
main, with only round-2; claimed, needs-human and merge-ready were absent.
The automatic pull-request run 35686210648 reports completed SUCCESS at the
exact head. It is the quick gate only; I did not download its entire raw log here
or claim that any full matrix ran. No workflow_dispatch result exists at this
head in the queried run list.

The old full Linux run 35682173537 remains failed in shards 1 and 5 and aggregate
ci. Its passing receiver shard remains partial historical evidence with missing
new Linux raw phase records. The independent package-binding/copied-span repair
and its authority gates belong to the manager's separate attempt. This reviewer
neither approves those paths nor starts a workaround run.

Final acceptance still requires authentic current-head/base Linux execution with
all six shards, checks and aggregate ci successful; complete retained receiver
JSONL records/inventories, actual phase values, tool/source identities and output
hashes must be read and checked. Resolve native provenance/reuse explicitly as
above. If the repair moves main or touches relevant called sources, preserve the
branch and obtain fresh exact-tuple review and applicable proof. Do not relabel
old Linux or native records as new execution.

Code-preflight: CLEAR
Evidence-status: PENDING
No final PASS is issued.