Reproduce fresh-join setup loss and finish UrlResolver remote verification

Current snapshot: 2026-10-06T05:18:17.222243+00:00

BLOCKED: the missing artifact is a reliable public-API reproducer of initial-announcement SETUP_MISS without artificial CPU load. The historical failure was before unregister, so it does not establish a withdrawal/resurrection mechanism. No guessed production or shipping-harness change was made. Do not complete this handoff from the local passes alone.

Shipping PR is OPEN at 6915473c3a1b5acc220a4785f37677093a908c83, rebased on main 4fe061512ba91888439a2cf10608631bb99b6121. Latest observed queue entry was absent; this lane never enqueues, dequeues, or merges. No deploy or Maven publication was performed. Contract A was already selected: successful winner adoption cancels only the unfinished independent loser, leaving completed and sibling requests alone.

The peer-scoped fixture advanced its request budget before publishing the second retryable error, allowing the post-write deadline check to replace the expected error. A controlled public-path reproducer failed 5/5 with that ordering. The fixture now expires the same budget only after the retryable response is observed at the retry-delay boundary. The full error assertion, exactly two original-provider dispatches, zero different-provider dispatches, and existing timeout/counts remain. Corrected peer test passed 5/5.

Both dedicated reviews were completed locally. Reverting only EffectAwareServiceHandler to main made 12/14 changed selectors fail; two were existing-behavior coverage. On the fixed shipping head all 14 passed five times (70/70), plus corrected peer 5/5, total 75/75. No additional shipping-source issue was found. Full failure stacks and per-run XMLs are preserved below.

Fresh-join diagnostics remove only artificial CPU load, preserving original deadlines and assertions. Original six waves/eight genuine pairs passed all 48 trials. Six waves/24 genuine pairs passed all 144 trials, with no initial delivery, withdrawal, removal or resurrection failure. This is an honest could-not-reproduce result across 192 trials; it does not complete the requested deterministic harness replacement. Continue from the historical trace and impose the actual missing-delivery condition through public dependencies once its mechanism is understood, rather than tuning a test to a host.

Remote verification remains unfinished. The exact-head 15-selector submission has no client-provided run ID or completed results. Run 939b16e2 matches the exact unique filter strings and submission timestamp; all 1904 rows were read across 20 pages: 1889 FILTERED_OUT and 15 PENDING, zero tests executed. Treat its association as inferred until confirmed by a run ID/commit record. The watcher reported required kotlin-build-ci-test suite 101343377648 queued with zero dispatched runs on this head. Actions bld-build was IN_PROGRESS. No remote pass, full suite pass, or LANDABLE verdict is claimed. Old-head run ea514e85 observations do not prove this head. Informational kompile-remote-build is non-gating. No requeue or shared infrastructure change was attempted.

All owned local test/probe/watcher processes were stopped; process audit found none remaining. The report-challenge CLI was not run because its automatic merge conflicts with lane prohibitions. No BuildTest* or kompile* repository was changed.

Durable current work:

• Shipping branch, head 6915473c3a1b5acc220a4785f37677093a908c83.
• Clean reviewed candidate, same head.
• Evidence branch, head 0e032bf01d0c6e182a864705c15c198618f42e17; findings, five old peer failures, reverted-handler failures, all five fixed batches, fresh-join 48/144 results, diagnostic sources as .kts.txt, and paged remote snapshot. This branch contains review artifacts and is not a shipping merge candidate.

Remaining requirements: reliable fresh-join reproducer and deterministic harness replacement preserving 48 trials; exact-head remote/full-suite verification; required gating checks and supervisor final decision. No Maven coordinate needs publication based on the findings here. Earlier snapshots and every historical branch link are retained below for continuity; their states must be re-verified before use.

Historical handoff body (superseded where the current snapshot differs)

Handoff: Confirm losing-request ownership, reproduce the remaining failures, and finish remote CI

Written: 2026-10-04T15:29:04.269074+00:00. RE-VERIFY: every state below is a snapshot. First run handoff-cli claims hf-2026-10-02-decide-the-losing-request-contract-and-finish-the-urlresolver-relay-race-test and fetch the live body. Verify the shipping PR with gh pr view https://github.com/CodexCoder21Organization/UrlResolver/pull/1163 --json state,headRefOid,mergeStateStatus,statusCheckRollup,mergedAt; verify every branch with git ls-remote. A fresh query wins. No merge, enqueue, deploy, publish or completion is authorized for a lane worker.

Mission summary

The original board-drain request was: “Let's work through all open handoffs and drive them to completion. Ensure we are parallelizing to the extent possible and racing PRs.” This handoff covers the handler-wait fix and relay-race correction in the shipping PR. Its motivation was unrelated routes ceasing to answer together while 64 handler requests occupied shared transport dispatch threads. The production change suspends the request coroutine while its owned delegate continues on its executor.

The earlier body records a supervisor authorization on 2026-10-02 to accept cancellation of the independent losing direct request after relay adoption. The current lane brief asks the supervisor to confirm the choice from evidence; this lane made no contract/source/test change. The remaining work is that decision, reliable reproducers for the two later failure scenarios, and the required remote gate. This is CHECKPOINT under the brief's instruction to stop when a needed buildtest gate cannot be submitted in this invocation, not a ready-to-merge result.

What was found and done — the chain

1. Saved and live handoff read completely, fresh UrlResolver clone, README and required engineering/review documents read; no repository AGENTS.md exists. Only this conversation's fable-hq-20261004 claim was LIVE at the last ownership check. Historical lane names p1163, rv1163b and urlfix3 identify earlier sessions, not source concepts.
2. Shipping PR remains OPEN, targets main, and is BLOCKED at 55f89d6a0288b2987c2d95f160c56a1880d81486. Main and its merge base remain 1053ace97e38d3a3ee85294b07a3f8465adf6fd0. Its description already opens with the request and observable reason. Its diff has one changed production file, EffectAwareServiceHandler.kt, 13 added test scripts, the original relay-test correction, and README; no support artifacts are in the shipping diff.
3. Source confirms the mechanism: direct and relay calls have separate workers, connections and sessions. callService adopts a successful result then interrupts unfinished attempts in its finally block. Wrapper cancellation removes that call's session and cancels only its unfinished owned task. Completed workers remain free to finish cleanup. The old blanket “no provider interruption” oracle conflicted with loser cleanup; the corrected test still requires both paths to enter, exact relay result, closed direct response gate, no direct publication, exact counts/identity, and no winner or premature interruption.
4. Prior evidence was independently read: the controlled old oracle failed at iteration 0; corrected controlled test passed; the 68-selector family XML has 68 passed / 0 failed. A separate 100-pair sibling ownership proof is preserved on its branch. These are prior-run records, not newly rerun counts. All were retained because they establish ordering/ownership rather than a latency heuristic.
5. This lane completed separate test-comprehensiveness and adversarial source review passes against the exact shipping source. Findings and the invariant table are durable here. No additional must-fix gap was found in the changed surface. That does not resolve the two later unchanged tests or establish full-suite reliability.
6. A permitted fresh local peer-scoped target passed 1/1, zero failures, in 7289 ms. That single pass is not a reliable failure reproducer and no fix was guessed. The controlled relay target also passed 1/1 in 7447 ms, but its preflight rebase failed because review notes were unstaged and the shell continued. It is expressly informational, not an accepted lane gate. After notes were checkpointed and rebase succeeded, the required repeat was blocked before JVM launch by memory 4837617664 bytes, above 4.5 GiB. No test was weakened.
7. The fresh-join failure remains a missing initial announcement (SETUP_MISS) before withdrawal. Its unchanged test creates six waves of eight node pairs and at least eight Math.sin CPU spinner threads. It is a large test and its artificial-load harness conflicts with this brief and TESTING's real-concurrency rule. It was not run or changed locally. Supervisor must settle how to replace that harness with deterministic public-path ordering while preserving all trials and assertions; host load is not an established cause.
8. Existing Actions run attempt 2 is SUCCESS, 1901/1901. This external rerun was not requested by this lane and does not explain the earlier 1899/1901 failure. Required remote 0a76fbdf failed before tests: 0 passed / 0 failed / 1901 total, provisioning deadline exceeded, createdDropletIds=[], named createDropletAsync call did not finish in 30000 ms. The informational upload check ended NEUTRAL with no established buildtest connection. Full summaries/stacks are preserved in checks-current.json.
9. A newer externally started required remote 2ac968aa now replaces that historical failure and is IN_PROGRESS as of the last PR query; informational upload also IN_PROGRESS. Both old and replacement results API reads returned HTTP 503. No new remote submission, check re-request, watcher mutation, source change, PR edit, production operation or handoff completion was performed by this lane.

Losing-request decision for the supervisor

Main README promised no submission-bookkeeping interruption of completed workers; it did not promise that an unfinished loser must drain. PR README expressly adds unfinished-wait cancellation. The old relay test's blanket assertion is the conflicting B-shaped oracle. README's separate raw sendRpcRequest confirmed-relay policy (RelayRequestPossiblyDeliveredException, no automatic repeat on ambiguous delivery, explicit idempotent replay opt-in) must remain unchanged. The full contract table and source references distinguish these APIs and exceptions.

Relevant PRs / refs

No satellite is proved obsolete; no closure is recommended. No deployed artifact was changed or verified in this lane. Prior zero-test remote runs (5913c0ec, 2c3767f2, 758f69b2) are preserved history in the saved body, not proof of current test success or new instructions to retry.

Next steps

1. Re-verify current state first, including claims, newest run, PR head and main. Read the findings and both independent review sections; do not redo proved ownership analysis unless source changed.
2. Supervisor: confirm A (recommended) or choose B explicitly. If B is chosen, define ownership after winner return, cancellation/close/deadline handling and late-result/effect visibility before implementation. Also settle the fresh-join artificial-load harness: recommend deterministic public-path ordering rather than retaining CPU spinners; never reduce its 48 trials, increase timeouts or weaken assertions.
3. Reproduce the peer-scoped failure through foundation.url.resolver.testPeerScopedReconnectRejectsDifferentDirectProvider: expected full text RPC request 'read' failed: RELAY_FORWARD_RETRYABLE - request was not dispatched, observed a 1000 ms request deadline instead. Current source passed locally once. Establish the exact response/dispatch ordering and a reliably failing old-code test before a fix; keep full historical stack.
4. For fresh join, exact existing selector is foundation.url.resolver.stressTestFreshJoinWithdrawalDeliveryUnderConcurrentReannounce. Reproduce the missing initial announcement before the withdrawal guard under the agreed harness; root cause remains unknown. Do not treat later green runs as a fix or infer host load as the cause.
5. After service repair/authorization, first observe the existing remote run rather than duplicate it. Track timeout 2700 build-watchman --run 2ac968aa. Run the unchanged controlled selector foundation.url.resolver.stressTestRelayFallbackCancellationAfterRelayAdoption and original foundation.url.resolver.stressTestRelayFallbackRacesDirectConnectionForNonNatPeer with successful rebase and a permitted memory gate. Use scripts/test.bash --remote --test <selector> --log <path> for targeted checks when remote runs are authorized; no CPU spinner amplification.
6. Any eventual source/shared-contract fix needs old-code failing and fixed-code passing deterministic reproducers, both independent reviews, then one full scripts/test.bash --remote --log full-results.xml from the exact head before push. Record pass/fail counts. Fetch/rebase, check existing PR OPEN before push, and target main. Do not blindly re-request a failing remote check.
7. Only once every required check (especially kotlin.build (remote)) is green and the two scenarios are accounted for should the supervisor do final review/merge. Supervisor owns enqueue, deployment/publication if separately authorized, and handoff completion. No automatic lane action is implied.

Reusable / operational knowledge

• Export PATH=/code/ws/bin:$PATH in every shell. Clone only into this lane's /code/ws/L23/UrlResolver; no shared checkout. Host native coursier is the wrong architecture. The test script hardcodes ignored jars/coursier; this clone used a small JVM launcher for /code/ws/bin/coursier.jar, not a source change.
• Shared host has 6 GiB total. Gate every small targeted local JVM at memory <4.5 GiB, one at a time; no full local suite/fatjar. Use set -e so a failed rebase cannot continue to a test. The one preflight error and informational result are retained honestly.
• No remote submissions or check re-requests were permitted in this invocation. Service API 503 and provisioning summaries are observations, not a diagnosed underlying infrastructure mechanism. The report-challenge CLI was not invoked because it automatically enqueues/merges, contrary to this lane's gate; an authorized owner may record the durable service issue.
• Required reading: handoff triage/format, PHILOSOPHY, TESTING, CODE_REVIEW. The lane's service-CLI/no-merge brief overrides legacy handoff-PR merge instructions.