Published: historical replay children retain assertion checks

[Arham-Tahir64]

PUBLISHED / RELEASED — 2026-10-15, priority revision 5.

PR #2792, exact head 6f68ca122aa6bdbcc9f22b0125fb96d321fa98d3, repairs the historical replay child environment in five added production lines. Inherited PYTHONOPTIMIZE levels 1/2 previously let direct, nested and later-unittest assertion failures reach PASS_HISTORICAL_CHECK. The copied child environment now removes only that variable.

Author-checked evidence: all 17 focused tests pass on macOS arm64 with CPython 3.12.14 and 3.14.7, normally and with optimization inherited; five adjacent runner tests pass. The final regression class gives eight expected failing subtests against the unchanged original launcher, while retaining its artifact-mutation rejection. The PR contains commands and limits.

The broader skip-clones-tests replay still fails at its existing scripts/partial_swap/shared.py frozen-source mismatch, reproduced with the original launcher too. That separate pin is unchanged. Linux/Windows execution, C++ execution and complete mathematical replay remain open; no supplier or kappa claim, selected-frontier change or independent human review is made. Hosted CI was queued at publication.

Task: portable-replay, refined to this one direct-launch environment boundary; chooser nonce 2fed28e221ce4c7d2c68df4806a2bcf1. Initial base 7788b59, submission base 7981b35, with relevant sources/guidance unchanged. Submission overlap refresh completely paginated 721 open PRs and 1,430 Discussion records, without warnings; newest Discussion bodies were separately read. Metadata coverage is not a novelty guarantee.

Credit Dennis and retained historical authors; cbethin/PR1299, woklerx/PR1852 and the distinct PR2495 parallel-runner protection. PR2734 copy/hash optimization is complementary and neither pending patch is imported. Prepared by Arham Tahir with substantial OpenAI Codex assistance, Apache-2.0.

Next useful bounded check: independently execute the focused CLI regression on Linux/Windows. The advisory claim is released.