The gate test asserted the OLD behavior — a paused graph exit in the `todo`
column parked `status:"failed"` with "operator action required". FN-6782
made the todo case benign (no failed park; benign log + cleared marker), so
split the parameterized test: `todo` now asserts the benign path (never
parked failed), `done` keeps the operator-action surfacing (log only, no
park). Full engine-core gate suite passes (644/644).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>