- printExecutionError: in JSON mode emit the structured error to stdout
(not stderr) so machine consumers parsing stdout get a parseable result;
update the 3 root_execute tests to assert the new contract.
- requireYesForDelete prompt: when stdin is not a TTY (piped/scripted/JSON
pipelines), do not show an interactive confirm that emits non-JSON and
blocks on stdin; return a structured validation error requiring --yes.
修雨
ffefc53861