fix(approval): wake blocked gateway approvals on session cleanup#18171
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Salvages #18044 onto current main. Authorship preserved via cherry-pick.
Summary
Gateway approval waiters blocked in
threading.Event.wait()now get signalled (and marked as denied) whenclear_session()runs during/new,/resume, or/branch— instead of idling until the dangerous-command approval timeout expires.Changes
tools/approval.py:clear_session()now pops gateway queues, setsentry.result="deny", and callsentry.event.set()outside the lock. Same lock-scope fix applied to siblingunregister_gateway_notify()(prevents deadlock when waiter re-acquires_lock).tests/gateway/.Validation
scripts/run_tests.sh tests/gateway/test_approve_deny_commands.py tests/gateway/test_session_boundary_security_state.py→ 25/25 passing (3 runs).Credit: @Yukipukii1 (original PR #18044)