The kernel runs exact helical sweeps and never resizes; the check that
refuses a thread off its hole's or shaft's size is the engine's sugar
(AGENTS.md). So the seven cases (995, 1443, 2152, 2969, 3366, 2369,
2705) go back to expecting that refusal and its message, as 1375e905 had
them, reversing 1588dd70.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>