The two-process race probe (P7) spawned recursively and produced no trustworthy
result, so conditional commit's lock behavior is proven by Cut 3's tests, which
now require guarded child launches (explicit host, role chosen by environment,
fail if a child would spawn) or in-process concurrent file handles. The fork bomb
is recorded among the risks. Compare-exchange leaves the follow-ups.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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