When --jq is applied, the jq expression can filter the _content_safety_alert
field out of stdout, hiding the warning. Whether a stderr fallback warning was
written used to depend on a caller-set EmitOptions.JQSafetyWarning flag, so the
raw api/service paths warned but shortcut commands did not — the safety alert
was silently lost. Remove the flag and always write the stderr warning when jq
is applied and an alert exists.
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