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taodengandClaude Opus 5
553c53621a
#203 has been seen four times, always on Linux CI, never once on macOS across 1000+ runs in two independent experiments. The documented next step is a Linux + Node 24 reproduction, and there is currently no way to run one without reddening an unrelated PR and waiting for chance. workflow_dispatch only — it never runs on push or pull_request, so it costs nothing until someone asks for it. Inputs are the two suspected variables: - `node` is a choice (24 / 22 / 26) rather than pinned, because 22-vs-24 is a comparison worth running deliberately. A previous Linux VM attempt was invalidated by Node 22's `node:sqlite` ExperimentalWarning landing on stderr, which the boot gate read as "server did not start" — ~23 of 50 runs failed spuriously. The workflow says so, so the next person interprets a 22 result against that confound instead of rediscovering it. - `concurrency` is the knob that actually reproduces, not round count: test() is fire-and-forget for async bodies, so ONE suite run already spawns 15 concurrent server.mjs children across 11 ltBoot tests. Several suites at once is what multiplies cross-process contention. Classification is anchored on the failure marker AND the test name, which is not cosmetic. ltDiag samples the first 900B of child stdout (#204) — the boot banner — so a log where only the GATE test failed still contains "Local tools: ON". Validated against real logs rather than reasoned about: 3 clean runs + 1 gate-mutation run gave unanchored 'Local tools' -> 1 hit, attributed to the WRONG category anchored -> gate=1, announce=0 (correct) totals -> total=4 clean=3 (correct) My first draft had the unanchored form with a comment claiming the failure mode was "matches every log". That was wrong — the real defect is cross-category attribution, caused by the diagnostic quoting the child's own output. Found by running the logic on real logs; the comment now states the measured reason. The job does NOT fail on a reproduction: catching the flake is the goal, and a red X would read as "the hunt is broken" rather than "the flake was caught". Results go to the step summary; logs upload as an artifact. server.mjs: unchanged (CI-only; ALIGNMENT.md requires no cli.js citation). Verified: YAML parses, all three run blocks pass `bash -n`, classify logic exercised against real suite output. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_017gbqUZ8HfBZpjjbzQ85oH8