Found during the independent review of #448 (report archived in the program's session records) — pre-existing at base, not introduced by that PR.
testModernRenderOfEveryFixtureRecordsNoFaults fails on a locally regenerated RetryResults.xcresult under Xcode 26.2 (17C52): the modern payload store records .payloadExportFailed for a screen-recording attachment. The same test passes on CI (Xcode 26.6) and passed on earlier local generations, so it is generation- or toolchain-variant.
Why this matters now: the #391 differential (Task 12) asserts the set of exported attachment filenames and their bytes across both backends. If a modern export genuinely fails on some generations, the differential will fail on this toolchain — and a fault is not maskable by the allow-list (faults are never format limitations, per the design spec). Root-cause before or during Task 12: candidate suspects are the export attachments handling of screen recordings mid-write, the manifest join for video attachments, or a real Xcode 26.2 bundle quirk.
Refs #391; surfaced while reviewing #448.
Found during the independent review of #448 (report archived in the program's session records) — pre-existing at base, not introduced by that PR.
testModernRenderOfEveryFixtureRecordsNoFaultsfails on a locally regeneratedRetryResults.xcresultunder Xcode 26.2 (17C52): the modern payload store records.payloadExportFailedfor a screen-recording attachment. The same test passes on CI (Xcode 26.6) and passed on earlier local generations, so it is generation- or toolchain-variant.Why this matters now: the #391 differential (Task 12) asserts the set of exported attachment filenames and their bytes across both backends. If a modern export genuinely fails on some generations, the differential will fail on this toolchain — and a fault is not maskable by the allow-list (faults are never format limitations, per the design spec). Root-cause before or during Task 12: candidate suspects are the
export attachmentshandling of screen recordings mid-write, the manifest join for video attachments, or a real Xcode 26.2 bundle quirk.Refs #391; surfaced while reviewing #448.