Test the no-GIL readiness axis and gate CI on it#275
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The no-GIL axis in pyisolate.nogil is a release gate -- it decides whether a host may claim parallel-cell semantics or must fall back to scheduled compartments -- but it had no dedicated tests, and the free-threaded CI job was entirely advisory (continue-on-error) and only ran race tests. - tests/test_nogil.py: cover the axis across the build / process-GIL / native-extension-safety combinations, the PYISOLATE_NOGIL_SAFE_MODULES declaration parsing and gating, native-vs-pure-Python module detection, and the RuntimeWarning path (fires on unknown extensions, silent otherwise, and suppressible via env). The inputs are monkeypatched so the logic is validated on ordinary GIL-enabled interpreters too. - ci.yml: the no-gil job now runs the axis tests assertively (a regression is a real release-gate bug), while the timing-sensitive race tests stay advisory. Full suite: 465 passed, 4 skipped. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01PbbJc7Ntj159D9LNGevwC2
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The no-GIL axis in pyisolate.nogil is a release gate -- it decides whether a host may claim parallel-cell semantics or must fall back to scheduled compartments -- but it had no dedicated tests, and the free-threaded CI job was entirely advisory (continue-on-error) and only ran race tests.
Full suite: 465 passed, 4 skipped.
Claude-Session: https://claude.ai/code/session_01PbbJc7Ntj159D9LNGevwC2