Function failClosed

pkg/hooks/executor.go:400–402

failClosed reports whether a hook failure on event must deny the event. PreToolUse (both lanes) is a hard security boundary: a crashed safety hook must not silently allow the call through. Every other event surfaces failures as warnings unless the hook opts into ErrorPolicyBlock.

(event EventType)

// Every other event surfaces failures as warnings unless the hook
// opts into ErrorPolicyBlock.
func failClosed(event EventType) bool {
	return event == EventPreToolUse || event == EventPreToolUsePreYolo
}

// stdoutAsContext reports whether plain stdout (non-JSON, exit 0)
// from a hook should be routed into Result.AdditionalContext. It is